diff options
Diffstat (limited to 'src/vim9execute.c')
| -rw-r--r-- | src/vim9execute.c | 7394 |
1 files changed, 7394 insertions, 0 deletions
diff --git a/src/vim9execute.c b/src/vim9execute.c new file mode 100644 index 0000000..f8ce101 --- /dev/null +++ b/src/vim9execute.c @@ -0,0 +1,7394 @@ +/* vi:set ts=8 sts=4 sw=4 noet: + * + * VIM - Vi IMproved by Bram Moolenaar + * + * Do ":help uganda" in Vim to read copying and usage conditions. + * Do ":help credits" in Vim to see a list of people who contributed. + * See README.txt for an overview of the Vim source code. + */ + +/* + * vim9execute.c: execute Vim9 script instructions + */ + +#define USING_FLOAT_STUFF +#include "vim.h" + +#if defined(FEAT_EVAL) || defined(PROTO) + +// When not generating protos this is included in proto.h +#ifdef PROTO +# include "vim9.h" +#endif + + +// Structure put on ec_trystack when ISN_TRY is encountered. +typedef struct { + int tcd_frame_idx; // ec_frame_idx at ISN_TRY + int tcd_stack_len; // size of ectx.ec_stack at ISN_TRY + int tcd_in_catch; // in catch or finally block + int tcd_did_throw; // set did_throw in :endtry + int tcd_catch_idx; // instruction of the first :catch or :finally + int tcd_finally_idx; // instruction of the :finally block or zero + int tcd_endtry_idx; // instruction of the :endtry + int tcd_caught; // catch block entered + int tcd_cont; // :continue encountered, jump here (minus one) + int tcd_return; // when TRUE return from end of :finally +} trycmd_T; + +// Data local to a function. +// On a function call, if not empty, is saved on the stack and restored when +// returning. +typedef struct { + int floc_restore_cmdmod; + cmdmod_T floc_save_cmdmod; + int floc_restore_cmdmod_stacklen; +} funclocal_T; + +// Structure to hold a reference to an outer_T, with information of whether it +// was allocated. +typedef struct { + outer_T *or_outer; + partial_T *or_partial; // decrement "or_partial->pt_refcount" later + int or_outer_allocated; // free "or_outer" later +} outer_ref_T; + +// A stack is used to store: +// - arguments passed to a :def function +// - info about the calling function, to use when returning +// - local variables +// - temporary values +// +// In detail (FP == Frame Pointer): +// arg1 first argument from caller (if present) +// arg2 second argument from caller (if present) +// extra_arg1 any missing optional argument default value +// FP -> cur_func calling function +// current previous instruction pointer +// frame_ptr previous Frame Pointer +// var1 space for local variable +// var2 space for local variable +// .... fixed space for max. number of local variables +// temp temporary values +// .... flexible space for temporary values (can grow big) + +/* + * Execution context. + */ +struct ectx_S { + garray_T ec_stack; // stack of typval_T values + int ec_frame_idx; // index in ec_stack: context of ec_dfunc_idx + int ec_initial_frame_idx; // frame index when called + + outer_ref_T *ec_outer_ref; // outer scope used for closures, allocated + funclocal_T ec_funclocal; + + garray_T ec_trystack; // stack of trycmd_T values + + isn_T *ec_instr; // array with instructions + int ec_dfunc_idx; // current function index + int ec_iidx; // index in ec_instr: instruction to execute + + garray_T ec_funcrefs; // partials that might be a closure + + int ec_did_emsg_before; + int ec_trylevel_at_start; + where_T ec_where; +}; + +#ifdef FEAT_PROFILE +// stack of profinfo_T used when profiling. +static garray_T profile_info_ga = {0, 0, sizeof(profinfo_T), 20, NULL}; +#endif + +// Get pointer to item in the stack. +#define STACK_TV(idx) (((typval_T *)ectx->ec_stack.ga_data) + idx) + +// Get pointer to item relative to the bottom of the stack, -1 is the last one. +#define STACK_TV_BOT(idx) (((typval_T *)ectx->ec_stack.ga_data) + ectx->ec_stack.ga_len + (idx)) + +// Get pointer to a local variable on the stack. Negative for arguments. +#define STACK_TV_VAR(idx) (((typval_T *)ectx->ec_stack.ga_data) + ectx->ec_frame_idx + STACK_FRAME_SIZE + idx) + + void +to_string_error(vartype_T vartype) +{ + semsg(_(e_cannot_convert_str_to_string), vartype_name(vartype)); +} + +/* + * Return the number of arguments, including optional arguments and any vararg. + */ + static int +ufunc_argcount(ufunc_T *ufunc) +{ + return ufunc->uf_args.ga_len + (ufunc->uf_va_name != NULL ? 1 : 0); +} + +/* + * Create a new string from "count" items at the bottom of the stack. + * A trailing NUL is appended. + * When "count" is zero an empty string is added to the stack. + */ + static int +exe_concat(int count, ectx_T *ectx) +{ + int idx; + int len = 0; + typval_T *tv; + garray_T ga; + + ga_init2(&ga, sizeof(char), 1); + // Preallocate enough space for the whole string to avoid having to grow + // and copy. + for (idx = 0; idx < count; ++idx) + { + tv = STACK_TV_BOT(idx - count); + if (tv->vval.v_string != NULL) + len += (int)STRLEN(tv->vval.v_string); + } + + if (ga_grow(&ga, len + 1) == FAIL) + return FAIL; + + for (idx = 0; idx < count; ++idx) + { + tv = STACK_TV_BOT(idx - count); + ga_concat(&ga, tv->vval.v_string); + clear_tv(tv); + } + + // add a terminating NUL + ga_append(&ga, NUL); + + ectx->ec_stack.ga_len -= count - 1; + STACK_TV_BOT(-1)->vval.v_string = ga.ga_data; + + return OK; +} + +/* + * Create a new list from "count" items at the bottom of the stack. + * When "count" is zero an empty list is added to the stack. + * When "count" is -1 a NULL list is added to the stack. + */ + static int +exe_newlist(int count, ectx_T *ectx) +{ + list_T *list = NULL; + int idx; + typval_T *tv; + + if (count >= 0) + { + list = list_alloc_with_items(count); + if (list == NULL) + return FAIL; + for (idx = 0; idx < count; ++idx) + list_set_item(list, idx, STACK_TV_BOT(idx - count)); + } + + if (count > 0) + ectx->ec_stack.ga_len -= count - 1; + else if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + { + list_unref(list); + return FAIL; + } + else + ++ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(-1); + tv->v_type = VAR_LIST; + tv->vval.v_list = list; + tv->v_lock = 0; + if (list != NULL) + ++list->lv_refcount; + return OK; +} + +/* + * Implementation of ISN_NEWDICT. + * Returns FAIL on total failure, MAYBE on error. + */ + static int +exe_newdict(int count, ectx_T *ectx) +{ + dict_T *dict = NULL; + dictitem_T *item; + char_u *key; + int idx; + typval_T *tv; + + if (count >= 0) + { + dict = dict_alloc(); + if (unlikely(dict == NULL)) + return FAIL; + for (idx = 0; idx < count; ++idx) + { + // have already checked key type is VAR_STRING + tv = STACK_TV_BOT(2 * (idx - count)); + // check key is unique + key = tv->vval.v_string == NULL ? (char_u *)"" : tv->vval.v_string; + item = dict_find(dict, key, -1); + if (item != NULL) + { + semsg(_(e_duplicate_key_in_dictionary_str), key); + dict_unref(dict); + return MAYBE; + } + item = dictitem_alloc(key); + clear_tv(tv); + if (unlikely(item == NULL)) + { + dict_unref(dict); + return FAIL; + } + tv = STACK_TV_BOT(2 * (idx - count) + 1); + item->di_tv = *tv; + item->di_tv.v_lock = 0; + tv->v_type = VAR_UNKNOWN; + if (dict_add(dict, item) == FAIL) + { + // can this ever happen? + dict_unref(dict); + return FAIL; + } + } + } + + if (count > 0) + ectx->ec_stack.ga_len -= 2 * count - 1; + else if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + return FAIL; + else + ++ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(-1); + tv->v_type = VAR_DICT; + tv->v_lock = 0; + tv->vval.v_dict = dict; + if (dict != NULL) + ++dict->dv_refcount; + return OK; +} + +/* + * If debug_tick changed check if "ufunc" has a breakpoint and update + * "uf_has_breakpoint". + */ + void +update_has_breakpoint(ufunc_T *ufunc) +{ + if (ufunc->uf_debug_tick == debug_tick) + return; + + linenr_T breakpoint; + + ufunc->uf_debug_tick = debug_tick; + breakpoint = dbg_find_breakpoint(FALSE, ufunc->uf_name, 0); + ufunc->uf_has_breakpoint = breakpoint > 0; +} + +static garray_T dict_stack = GA_EMPTY; + +/* + * Put a value on the dict stack. This consumes "tv". + */ + static int +dict_stack_save(typval_T *tv) +{ + if (dict_stack.ga_growsize == 0) + ga_init2(&dict_stack, sizeof(typval_T), 10); + if (ga_grow(&dict_stack, 1) == FAIL) + return FAIL; + ((typval_T *)dict_stack.ga_data)[dict_stack.ga_len] = *tv; + ++dict_stack.ga_len; + return OK; +} + +/* + * Get the typval at top of the dict stack. + */ + static typval_T * +dict_stack_get_tv(void) +{ + if (dict_stack.ga_len == 0) + return NULL; + return ((typval_T *)dict_stack.ga_data) + dict_stack.ga_len - 1; +} + +/* + * Get the dict at top of the dict stack. + */ + static dict_T * +dict_stack_get_dict(void) +{ + typval_T *tv; + + if (dict_stack.ga_len == 0) + return NULL; + tv = ((typval_T *)dict_stack.ga_data) + dict_stack.ga_len - 1; + if (tv->v_type == VAR_DICT) + return tv->vval.v_dict; + return NULL; +} + +/* + * Drop an item from the dict stack. + */ + static void +dict_stack_drop(void) +{ + if (dict_stack.ga_len == 0) + { + iemsg("Dict stack underflow"); + return; + } + --dict_stack.ga_len; + clear_tv(((typval_T *)dict_stack.ga_data) + dict_stack.ga_len); +} + +/* + * Drop items from the dict stack until the length is equal to "len". + */ + static void +dict_stack_clear(int len) +{ + while (dict_stack.ga_len > len) + dict_stack_drop(); +} + +/* + * Get a pointer to useful "pt_outer" of "pt". + */ + static outer_T * +get_pt_outer(partial_T *pt) +{ + partial_T *ptref = pt->pt_outer_partial; + + if (ptref == NULL) + return &pt->pt_outer; + + // partial using partial (recursively) + while (ptref->pt_outer_partial != NULL) + ptref = ptref->pt_outer_partial; + return &ptref->pt_outer; +} + +/* + * Check "argcount" arguments on the stack against what "ufunc" expects. + * "off" is the offset of arguments on the stack. + * Return OK or FAIL. + */ + static int +check_ufunc_arg_types(ufunc_T *ufunc, int argcount, int off, ectx_T *ectx) +{ + if (ufunc->uf_arg_types == NULL && ufunc->uf_va_type == NULL) + return OK; + + typval_T *argv = STACK_TV_BOT(0) - argcount - off; + + // The function can change at runtime, check that the argument + // types are correct. + for (int i = 0; i < argcount; ++i) + { + type_T *type = NULL; + + // assume a v:none argument, using the default value, is always OK + if (argv[i].v_type == VAR_SPECIAL + && argv[i].vval.v_number == VVAL_NONE) + continue; + + if (i < ufunc->uf_args.ga_len && ufunc->uf_arg_types != NULL) + type = ufunc->uf_arg_types[i]; + else if (ufunc->uf_va_type != NULL) + type = ufunc->uf_va_type->tt_member; + if (type != NULL && check_typval_arg_type(type, + &argv[i], NULL, i + 1) == FAIL) + return FAIL; + } + return OK; +} + +/* + * Call compiled function "cdf_idx" from compiled code. + * This adds a stack frame and sets the instruction pointer to the start of the + * called function. + * If "pt_arg" is not NULL use "pt_arg->pt_outer" for ec_outer_ref->or_outer. + * + * Stack has: + * - current arguments (already there) + * - omitted optional argument (default values) added here + * - stack frame: + * - pointer to calling function + * - Index of next instruction in calling function + * - previous frame pointer + * - reserved space for local variables + */ + static int +call_dfunc( + int cdf_idx, + partial_T *pt_arg, + int argcount_arg, + ectx_T *ectx) +{ + int argcount = argcount_arg; + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + cdf_idx; + ufunc_T *ufunc = dfunc->df_ufunc; + int did_emsg_before = did_emsg_cumul + did_emsg; + int arg_to_add; + int vararg_count = 0; + int varcount; + int idx; + estack_T *entry; + funclocal_T *floc = NULL; + int res = OK; + compiletype_T compile_type; + + if (dfunc->df_deleted) + { + // don't use ufunc->uf_name, it may have been freed + emsg_funcname(e_function_was_deleted_str, + dfunc->df_name == NULL ? (char_u *)"unknown" : dfunc->df_name); + return FAIL; + } + +#ifdef FEAT_PROFILE + if (do_profiling == PROF_YES) + { + if (GA_GROW_OK(&profile_info_ga, 1)) + { + profinfo_T *info = ((profinfo_T *)profile_info_ga.ga_data) + + profile_info_ga.ga_len; + ++profile_info_ga.ga_len; + CLEAR_POINTER(info); + profile_may_start_func(info, ufunc, + (((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx)->df_ufunc); + } + } +#endif + + // When debugging and using "cont" switches to the not-debugged + // instructions, may need to still compile them. + compile_type = get_compile_type(ufunc); + if (func_needs_compiling(ufunc, compile_type)) + { + res = compile_def_function(ufunc, FALSE, compile_type, NULL); + + // compile_def_function() may cause def_functions.ga_data to change + dfunc = ((dfunc_T *)def_functions.ga_data) + cdf_idx; + } + if (res == FAIL || INSTRUCTIONS(dfunc) == NULL) + { + if (did_emsg_cumul + did_emsg == did_emsg_before) + semsg(_(e_function_is_not_compiled_str), + printable_func_name(ufunc)); + return FAIL; + } + + if (ufunc->uf_va_name != NULL) + { + // Need to make a list out of the vararg arguments. + // Stack at time of call with 2 varargs: + // normal_arg + // optional_arg + // vararg_1 + // vararg_2 + // After creating the list: + // normal_arg + // optional_arg + // vararg-list + // With missing optional arguments we get: + // normal_arg + // After creating the list + // normal_arg + // (space for optional_arg) + // vararg-list + vararg_count = argcount - ufunc->uf_args.ga_len; + if (vararg_count < 0) + vararg_count = 0; + else + argcount -= vararg_count; + if (exe_newlist(vararg_count, ectx) == FAIL) + return FAIL; + + vararg_count = 1; + } + + arg_to_add = ufunc->uf_args.ga_len - argcount; + if (arg_to_add < 0) + { + semsg(NGETTEXT(e_one_argument_too_many, e_nr_arguments_too_many, + -arg_to_add), -arg_to_add); + return FAIL; + } + else if (arg_to_add > ufunc->uf_def_args.ga_len) + { + int missing = arg_to_add - ufunc->uf_def_args.ga_len; + + semsg(NGETTEXT(e_one_argument_too_few, e_nr_arguments_too_few, + missing), missing); + return FAIL; + } + + // If this is an object method, the object is just before the arguments. + typval_T *obj = STACK_TV_BOT(0) - argcount - vararg_count - 1; + + // Check the argument types. + if (check_ufunc_arg_types(ufunc, argcount, vararg_count, ectx) == FAIL) + return FAIL; + + // Reserve space for: + // - missing arguments + // - stack frame + // - local variables + // - if needed: a counter for number of closures created in + // ectx->ec_funcrefs. + varcount = dfunc->df_varcount + dfunc->df_has_closure; + if (GA_GROW_FAILS(&ectx->ec_stack, + arg_to_add + STACK_FRAME_SIZE + varcount)) + return FAIL; + + // If depth of calling is getting too high, don't execute the function. + if (funcdepth_increment() == FAIL) + return FAIL; + ++ex_nesting_level; + + // Only make a copy of funclocal if it contains something to restore. + if (ectx->ec_funclocal.floc_restore_cmdmod) + { + floc = ALLOC_ONE(funclocal_T); + if (floc == NULL) + return FAIL; + *floc = ectx->ec_funclocal; + ectx->ec_funclocal.floc_restore_cmdmod = FALSE; + } + + // Move the vararg-list to below the missing optional arguments. + if (vararg_count > 0 && arg_to_add > 0) + *STACK_TV_BOT(arg_to_add - 1) = *STACK_TV_BOT(-1); + + // Reserve space for omitted optional arguments, filled in soon. + for (idx = 0; idx < arg_to_add; ++idx) + STACK_TV_BOT(idx - vararg_count)->v_type = VAR_UNKNOWN; + ectx->ec_stack.ga_len += arg_to_add; + + // Store current execution state in stack frame for ISN_RETURN. + STACK_TV_BOT(STACK_FRAME_FUNC_OFF)->vval.v_number = ectx->ec_dfunc_idx; + STACK_TV_BOT(STACK_FRAME_IIDX_OFF)->vval.v_number = ectx->ec_iidx; + STACK_TV_BOT(STACK_FRAME_INSTR_OFF)->vval.v_string = (void *)ectx->ec_instr; + STACK_TV_BOT(STACK_FRAME_OUTER_OFF)->vval.v_string = + (void *)ectx->ec_outer_ref; + STACK_TV_BOT(STACK_FRAME_FUNCLOCAL_OFF)->vval.v_string = (void *)floc; + STACK_TV_BOT(STACK_FRAME_IDX_OFF)->vval.v_number = ectx->ec_frame_idx; + ectx->ec_frame_idx = ectx->ec_stack.ga_len; + + // Initialize all local variables to number zero. Also initialize the + // variable that counts how many closures were created. This is used in + // handle_closure_in_use(). + int initcount = dfunc->df_varcount + (dfunc->df_has_closure ? 1 : 0); + for (idx = 0; idx < initcount; ++idx) + { + typval_T *tv = STACK_TV_BOT(STACK_FRAME_SIZE + idx); + + tv->v_type = VAR_NUMBER; + tv->vval.v_number = 0; + } + ectx->ec_stack.ga_len += STACK_FRAME_SIZE + varcount; + + // For an object method move the object from just before the arguments to + // the first local variable. + if (ufunc->uf_flags & FC_OBJECT) + { + *STACK_TV_VAR(0) = *obj; + obj->v_type = VAR_UNKNOWN; + } + + partial_T *pt = pt_arg != NULL ? pt_arg : ufunc->uf_partial; + if (pt != NULL || (ufunc->uf_flags & FC_CLOSURE)) + { + outer_ref_T *ref = ALLOC_CLEAR_ONE(outer_ref_T); + + if (ref == NULL) + return FAIL; + if (pt != NULL) + { + ref->or_outer = get_pt_outer(pt); + ++pt->pt_refcount; + ref->or_partial = pt; + } + else + { + ref->or_outer = ALLOC_CLEAR_ONE(outer_T); + if (unlikely(ref->or_outer == NULL)) + { + vim_free(ref); + return FAIL; + } + ref->or_outer_allocated = TRUE; + ref->or_outer->out_stack = &ectx->ec_stack; + ref->or_outer->out_frame_idx = ectx->ec_frame_idx; + if (ectx->ec_outer_ref != NULL) + ref->or_outer->out_up = ectx->ec_outer_ref->or_outer; + } + ectx->ec_outer_ref = ref; + } + else + ectx->ec_outer_ref = NULL; + + ++ufunc->uf_calls; + + // Set execution state to the start of the called function. + ectx->ec_dfunc_idx = cdf_idx; + ectx->ec_instr = INSTRUCTIONS(dfunc); + entry = estack_push_ufunc(ufunc, 1); + if (entry != NULL) + { + // Set the script context to the script where the function was defined. + // Save the current context so it can be restored on return. + entry->es_save_sctx = current_sctx; + current_sctx = ufunc->uf_script_ctx; + } + + // Start execution at the first instruction. + ectx->ec_iidx = 0; + + return OK; +} + +// Double linked list of funcstack_T in use. +static funcstack_T *first_funcstack = NULL; + + static void +add_funcstack_to_list(funcstack_T *funcstack) +{ + // Link in list of funcstacks. + if (first_funcstack != NULL) + first_funcstack->fs_prev = funcstack; + funcstack->fs_next = first_funcstack; + funcstack->fs_prev = NULL; + first_funcstack = funcstack; +} + + static void +remove_funcstack_from_list(funcstack_T *funcstack) +{ + if (funcstack->fs_prev == NULL) + first_funcstack = funcstack->fs_next; + else + funcstack->fs_prev->fs_next = funcstack->fs_next; + if (funcstack->fs_next != NULL) + funcstack->fs_next->fs_prev = funcstack->fs_prev; +} + +/* + * Used when returning from a function: Check if any closure is still + * referenced. If so then move the arguments and variables to a separate piece + * of stack to be used when the closure is called. + * When "free_arguments" is TRUE the arguments are to be freed. + * Returns FAIL when out of memory. + */ + static int +handle_closure_in_use(ectx_T *ectx, int free_arguments) +{ + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx; + int argcount; + int top; + int idx; + typval_T *tv; + int closure_in_use = FALSE; + garray_T *gap = &ectx->ec_funcrefs; + varnumber_T closure_count; + + if (dfunc->df_ufunc == NULL) + return OK; // function was freed + if (dfunc->df_has_closure == 0) + return OK; // no closures + tv = STACK_TV(ectx->ec_frame_idx + STACK_FRAME_SIZE + dfunc->df_varcount); + closure_count = tv->vval.v_number; + if (closure_count == 0) + return OK; // no funcrefs created + + // Compute "top": the first entry in the stack used by the function. + // This is the first argument (after that comes the stack frame and then + // the local variables). + argcount = ufunc_argcount(dfunc->df_ufunc); + top = ectx->ec_frame_idx - argcount; + + // Check if any created closure is still in use. + for (idx = 0; idx < closure_count; ++idx) + { + partial_T *pt; + int off = gap->ga_len - closure_count + idx; + + if (off < 0) + continue; // count is off or already done + pt = ((partial_T **)gap->ga_data)[off]; + if (pt->pt_refcount > 1) + { + int refcount = pt->pt_refcount; + int i; + + // A Reference in a local variable doesn't count, it gets + // unreferenced on return. + for (i = 0; i < dfunc->df_varcount; ++i) + { + typval_T *stv = STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_SIZE + i); + if (stv->v_type == VAR_PARTIAL && pt == stv->vval.v_partial) + --refcount; + } + if (refcount > 1) + { + closure_in_use = TRUE; + break; + } + } + } + + if (closure_in_use) + { + funcstack_T *funcstack = ALLOC_CLEAR_ONE(funcstack_T); + typval_T *stack; + + // A closure is using the arguments and/or local variables. + // Move them to the called function. + if (funcstack == NULL) + return FAIL; + + funcstack->fs_var_offset = argcount + STACK_FRAME_SIZE; + funcstack->fs_ga.ga_len = funcstack->fs_var_offset + + dfunc->df_varcount; + stack = ALLOC_CLEAR_MULT(typval_T, funcstack->fs_ga.ga_len); + funcstack->fs_ga.ga_data = stack; + if (stack == NULL) + { + vim_free(funcstack); + return FAIL; + } + add_funcstack_to_list(funcstack); + + // Move or copy the arguments. + for (idx = 0; idx < argcount; ++idx) + { + tv = STACK_TV(top + idx); + if (free_arguments) + { + *(stack + idx) = *tv; + tv->v_type = VAR_UNKNOWN; + } + else + copy_tv(tv, stack + idx); + } + // Skip the stack frame. + // Move the local variables. + for (idx = 0; idx < dfunc->df_varcount; ++idx) + { + tv = STACK_TV(ectx->ec_frame_idx + STACK_FRAME_SIZE + idx); + + // A partial created for a local function, that is also used as a + // local variable, has a reference count for the variable, thus + // will never go down to zero. When all these refcounts are one + // then the funcstack is unused. We need to count how many we have + // so we know when to check. + if (tv->v_type == VAR_PARTIAL && tv->vval.v_partial != NULL) + { + int i; + + for (i = 0; i < closure_count; ++i) + if (tv->vval.v_partial == ((partial_T **)gap->ga_data)[ + gap->ga_len - closure_count + i]) + ++funcstack->fs_min_refcount; + } + + *(stack + funcstack->fs_var_offset + idx) = *tv; + tv->v_type = VAR_UNKNOWN; + } + + for (idx = 0; idx < closure_count; ++idx) + { + partial_T *pt = ((partial_T **)gap->ga_data)[gap->ga_len + - closure_count + idx]; + if (pt->pt_refcount > 1) + { + ++funcstack->fs_refcount; + pt->pt_funcstack = funcstack; + pt->pt_outer.out_stack = &funcstack->fs_ga; + pt->pt_outer.out_frame_idx = ectx->ec_frame_idx - top; + } + } + } + + for (idx = 0; idx < closure_count; ++idx) + partial_unref(((partial_T **)gap->ga_data)[gap->ga_len + - closure_count + idx]); + gap->ga_len -= closure_count; + if (gap->ga_len == 0) + ga_clear(gap); + + return OK; +} + +/* + * Called when a partial is freed or its reference count goes down to one. The + * funcstack may be the only reference to the partials in the local variables. + * Go over all of them, the funcref and can be freed if all partials + * referencing the funcstack have a reference count of one. + * Returns TRUE if the funcstack is freed, the partial referencing it will then + * also have been freed. + */ + int +funcstack_check_refcount(funcstack_T *funcstack) +{ + int i; + garray_T *gap = &funcstack->fs_ga; + int done = 0; + typval_T *stack; + + if (funcstack->fs_refcount > funcstack->fs_min_refcount) + return FALSE; + for (i = funcstack->fs_var_offset; i < gap->ga_len; ++i) + { + typval_T *tv = ((typval_T *)gap->ga_data) + i; + + if (tv->v_type == VAR_PARTIAL && tv->vval.v_partial != NULL + && tv->vval.v_partial->pt_funcstack == funcstack + && tv->vval.v_partial->pt_refcount == 1) + ++done; + } + if (done != funcstack->fs_min_refcount) + return FALSE; + + stack = gap->ga_data; + + // All partials referencing the funcstack have a reference count of + // one, thus the funcstack is no longer of use. + for (i = 0; i < gap->ga_len; ++i) + clear_tv(stack + i); + vim_free(stack); + remove_funcstack_from_list(funcstack); + vim_free(funcstack); + + return TRUE; +} + +/* + * For garbage collecting: set references in all variables referenced by + * all funcstacks. + */ + int +set_ref_in_funcstacks(int copyID) +{ + funcstack_T *funcstack; + + for (funcstack = first_funcstack; funcstack != NULL; + funcstack = funcstack->fs_next) + { + typval_T *stack = funcstack->fs_ga.ga_data; + int i; + + for (i = 0; i < funcstack->fs_ga.ga_len; ++i) + if (set_ref_in_item(stack + i, copyID, NULL, NULL)) + return TRUE; // abort + } + return FALSE; +} + +// Ugly static to avoid passing the execution context around through many +// layers. +static ectx_T *current_ectx = NULL; + +/* + * Return TRUE if currently executing a :def function. + * Can be used by builtin functions only. + */ + int +in_def_function(void) +{ + return current_ectx != NULL; +} + +/* + * Clear "current_ectx" and return the previous value. To be used when calling + * a user function. + */ + ectx_T * +clear_current_ectx(void) +{ + ectx_T *r = current_ectx; + + current_ectx = NULL; + return r; +} + + void +restore_current_ectx(ectx_T *ectx) +{ + if (current_ectx != NULL) + iemsg("Restoring current_ectx while it is not NULL"); + current_ectx = ectx; +} + +/* + * Add an entry for a deferred function call to the currently executing + * function. + * Return the list or NULL when failed. + */ + static list_T * +add_defer_item(int var_idx, int argcount, ectx_T *ectx) +{ + typval_T *defer_tv = STACK_TV_VAR(var_idx); + list_T *defer_l; + list_T *l; + typval_T listval; + + if (defer_tv->v_type != VAR_LIST) + { + // first time, allocate the list + if (rettv_list_alloc(defer_tv) == FAIL) + return NULL; + } + defer_l = defer_tv->vval.v_list; + + l = list_alloc_with_items(argcount + 1); + if (l == NULL) + return NULL; + listval.v_type = VAR_LIST; + listval.vval.v_list = l; + listval.v_lock = 0; + if (list_insert_tv(defer_l, &listval, defer_l->lv_first) == FAIL) + { + vim_free(l); + return NULL; + } + + return l; +} + +/* + * Handle ISN_DEFER. Stack has a function reference and "argcount" arguments. + * The local variable that lists deferred functions is "var_idx". + * Returns OK or FAIL. + */ + static int +defer_command(int var_idx, int has_obj, int argcount, ectx_T *ectx) +{ + int obj_off = has_obj ? 1 : 0; + list_T *l = add_defer_item(var_idx, argcount + obj_off, ectx); + int i; + typval_T *func_tv; + + if (l == NULL) + return FAIL; + + func_tv = STACK_TV_BOT(-argcount - 1); + if (has_obj ? func_tv->v_type != VAR_PARTIAL : func_tv->v_type != VAR_FUNC) + { + semsg(_(e_expected_str_but_got_str), + has_obj ? "partial" : "function", + vartype_name(func_tv->v_type)); + return FAIL; + } + list_set_item(l, 0, func_tv); + if (has_obj) + list_set_item(l, 1, STACK_TV_BOT(-argcount - 2)); + + for (i = 0; i < argcount; ++i) + list_set_item(l, i + 1 + obj_off, STACK_TV_BOT(-argcount + i)); + ectx->ec_stack.ga_len -= argcount + 1 + obj_off; + return OK; +} + +/* + * Add a deferred call for "name" with arguments "argvars[argcount]". + * Consumes "name", also on failure. + * Only to be called when in_def_function() returns TRUE. + */ + int +add_defer_function(char_u *name, int argcount, typval_T *argvars) +{ + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + current_ectx->ec_dfunc_idx; + list_T *l; + typval_T func_tv; + int i; + + if (dfunc->df_defer_var_idx == 0) + { + iemsg("df_defer_var_idx is zero"); + vim_free(name); + return FAIL; + } + + l = add_defer_item(dfunc->df_defer_var_idx - 1, argcount, current_ectx); + if (l == NULL) + { + vim_free(name); + return FAIL; + } + + func_tv.v_type = VAR_FUNC; + func_tv.v_lock = 0; + func_tv.vval.v_string = name; + list_set_item(l, 0, &func_tv); + + for (i = 0; i < argcount; ++i) + list_set_item(l, i + 1, argvars + i); + return OK; +} + +/* + * Invoked when returning from a function: Invoke any deferred calls. + */ + static void +invoke_defer_funcs(ectx_T *ectx) +{ + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx; + typval_T *defer_tv = STACK_TV_VAR(dfunc->df_defer_var_idx - 1); + listitem_T *li; + + if (defer_tv->v_type != VAR_LIST) + return; // no function added + for (li = defer_tv->vval.v_list->lv_first; li != NULL; li = li->li_next) + { + list_T *l = li->li_tv.vval.v_list; + typval_T rettv; + typval_T argvars[MAX_FUNC_ARGS]; + int i; + listitem_T *arg_li = l->lv_first; + typval_T *functv = &l->lv_first->li_tv; + int obj_off = functv->v_type == VAR_PARTIAL ? 1 : 0; + int argcount = l->lv_len - 1 - obj_off; + + if (obj_off == 1) + arg_li = arg_li->li_next; // second list item is the object + for (i = 0; i < argcount; ++i) + { + arg_li = arg_li->li_next; + argvars[i] = arg_li->li_tv; + } + + funcexe_T funcexe; + CLEAR_FIELD(funcexe); + funcexe.fe_evaluate = TRUE; + rettv.v_type = VAR_UNKNOWN; + if (functv->v_type == VAR_PARTIAL) + { + funcexe.fe_partial = functv->vval.v_partial; + funcexe.fe_object = l->lv_first->li_next->li_tv.vval.v_object; + if (funcexe.fe_object != NULL) + ++funcexe.fe_object->obj_refcount; + } + (void)call_func(functv->vval.v_string, -1, + &rettv, argcount, argvars, &funcexe); + clear_tv(&rettv); + } +} + +/* + * Return from the current function. + */ + static int +func_return(ectx_T *ectx) +{ + int idx; + int ret_idx; + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx; + int argcount = ufunc_argcount(dfunc->df_ufunc); + estack_T *entry; + int prev_dfunc_idx = STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_FUNC_OFF)->vval.v_number; + funclocal_T *floc; +#ifdef FEAT_PROFILE + dfunc_T *prev_dfunc = ((dfunc_T *)def_functions.ga_data) + + prev_dfunc_idx; + + if (do_profiling == PROF_YES) + { + ufunc_T *caller = prev_dfunc->df_ufunc; + + if (dfunc->df_ufunc->uf_profiling + || (caller != NULL && caller->uf_profiling)) + { + profile_may_end_func(((profinfo_T *)profile_info_ga.ga_data) + + profile_info_ga.ga_len - 1, dfunc->df_ufunc, caller); + --profile_info_ga.ga_len; + } + } +#endif + + if (dfunc->df_defer_var_idx > 0) + invoke_defer_funcs(ectx); + + // No check for uf_refcount being zero, cannot think of a way that would + // happen. + --dfunc->df_ufunc->uf_calls; + + // execution context goes one level up + entry = estack_pop(); + if (entry != NULL) + current_sctx = entry->es_save_sctx; + + if (handle_closure_in_use(ectx, TRUE) == FAIL) + return FAIL; + + // Clear the arguments. If this was an object method also clear the + // object, it is just before the arguments. + int top = ectx->ec_frame_idx - argcount; + if (dfunc->df_ufunc->uf_flags & FC_OBJECT) + --top; + for (idx = top; idx < ectx->ec_frame_idx; ++idx) + clear_tv(STACK_TV(idx)); + + // Clear local variables and temp values, but not the return value. + for (idx = ectx->ec_frame_idx + STACK_FRAME_SIZE; + idx < ectx->ec_stack.ga_len - 1; ++idx) + clear_tv(STACK_TV(idx)); + + // The return value should be on top of the stack. However, when aborting + // it may not be there and ec_frame_idx is the top of the stack. + ret_idx = ectx->ec_stack.ga_len - 1; + if (ret_idx == ectx->ec_frame_idx + STACK_FRAME_IDX_OFF) + ret_idx = 0; + + if (ectx->ec_outer_ref != NULL) + { + if (ectx->ec_outer_ref->or_outer_allocated) + vim_free(ectx->ec_outer_ref->or_outer); + partial_unref(ectx->ec_outer_ref->or_partial); + vim_free(ectx->ec_outer_ref); + } + + // Restore the previous frame. + ectx->ec_dfunc_idx = prev_dfunc_idx; + ectx->ec_iidx = STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_IIDX_OFF)->vval.v_number; + ectx->ec_instr = (void *)STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_INSTR_OFF)->vval.v_string; + ectx->ec_outer_ref = (void *)STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_OUTER_OFF)->vval.v_string; + floc = (void *)STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_FUNCLOCAL_OFF)->vval.v_string; + // restoring ec_frame_idx must be last + ectx->ec_frame_idx = STACK_TV(ectx->ec_frame_idx + + STACK_FRAME_IDX_OFF)->vval.v_number; + + if (floc == NULL) + ectx->ec_funclocal.floc_restore_cmdmod = FALSE; + else + { + ectx->ec_funclocal = *floc; + vim_free(floc); + } + + if (ret_idx > 0) + { + // Reset the stack to the position before the call, with a spot for the + // return value, moved there from above the frame. + ectx->ec_stack.ga_len = top + 1; + *STACK_TV_BOT(-1) = *STACK_TV(ret_idx); + } + else + // Reset the stack to the position before the call. + ectx->ec_stack.ga_len = top; + + funcdepth_decrement(); + --ex_nesting_level; + return OK; +} + +/* + * Prepare arguments and rettv for calling a builtin or user function. + */ + static int +call_prepare(int argcount, typval_T *argvars, ectx_T *ectx) +{ + int idx; + typval_T *tv; + + // Move arguments from bottom of the stack to argvars[] and add terminator. + for (idx = 0; idx < argcount; ++idx) + argvars[idx] = *STACK_TV_BOT(idx - argcount); + argvars[argcount].v_type = VAR_UNKNOWN; + + // Result replaces the arguments on the stack. + if (argcount > 0) + ectx->ec_stack.ga_len -= argcount - 1; + else if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + return FAIL; + else + ++ectx->ec_stack.ga_len; + + // Default return value is zero. + tv = STACK_TV_BOT(-1); + tv->v_type = VAR_NUMBER; + tv->vval.v_number = 0; + tv->v_lock = 0; + + return OK; +} + +/* + * Call a builtin function by index. + */ + static int +call_bfunc(int func_idx, int argcount, ectx_T *ectx) +{ + typval_T argvars[MAX_FUNC_ARGS]; + int idx; + int did_emsg_before = did_emsg; + ectx_T *prev_ectx = current_ectx; + char *save_func_name = ectx->ec_where.wt_func_name; + + if (call_prepare(argcount, argvars, ectx) == FAIL) + return FAIL; + ectx->ec_where.wt_func_name = internal_func_name(func_idx); + + // Call the builtin function. Set "current_ectx" so that when it + // recursively invokes call_def_function() a closure context can be set. + current_ectx = ectx; + call_internal_func_by_idx(func_idx, argvars, STACK_TV_BOT(-1)); + current_ectx = prev_ectx; + ectx->ec_where.wt_func_name = save_func_name; + + // Clear the arguments. + for (idx = 0; idx < argcount; ++idx) + clear_tv(&argvars[idx]); + + if (did_emsg > did_emsg_before) + return FAIL; + return OK; +} + +/* + * Execute a user defined function. + * If the function is compiled this will add a stack frame and set the + * instruction pointer at the start of the function. + * Otherwise the function is called here. + * If "pt" is not null use "pt->pt_outer" for ec_outer_ref->or_outer. + * "iptr" can be used to replace the instruction with a more efficient one. + */ + static int +call_ufunc( + ufunc_T *ufunc, + partial_T *pt, + int argcount, + ectx_T *ectx, + isn_T *iptr, + dict_T *selfdict) +{ + typval_T argvars[MAX_FUNC_ARGS]; + funcexe_T funcexe; + funcerror_T error; + int idx; + int did_emsg_before = did_emsg; + compiletype_T compile_type = get_compile_type(ufunc); + + if (func_needs_compiling(ufunc, compile_type) + && compile_def_function(ufunc, FALSE, compile_type, NULL) + == FAIL) + return FAIL; + if (ufunc->uf_def_status == UF_COMPILED) + { + error = check_user_func_argcount(ufunc, argcount); + if (error != FCERR_UNKNOWN) + { + if (error == FCERR_TOOMANY) + semsg(_(e_too_many_arguments_for_function_str), + printable_func_name(ufunc)); + else + semsg(_(e_not_enough_arguments_for_function_str), + printable_func_name(ufunc)); + return FAIL; + } + + // The function has been compiled, can call it quickly. For a function + // that was defined later: we can call it directly next time. + if (iptr != NULL) + { + delete_instr(iptr); + iptr->isn_type = ISN_DCALL; + iptr->isn_arg.dfunc.cdf_idx = ufunc->uf_dfunc_idx; + iptr->isn_arg.dfunc.cdf_argcount = argcount; + } + return call_dfunc(ufunc->uf_dfunc_idx, pt, argcount, ectx); + } + + if (call_prepare(argcount, argvars, ectx) == FAIL) + return FAIL; + CLEAR_FIELD(funcexe); + funcexe.fe_evaluate = TRUE; + funcexe.fe_selfdict = selfdict != NULL ? selfdict : dict_stack_get_dict(); + + // Call the user function. Result goes in last position on the stack. + error = call_user_func_check(ufunc, argcount, argvars, + STACK_TV_BOT(-1), &funcexe, funcexe.fe_selfdict); + + // Clear the arguments. + for (idx = 0; idx < argcount; ++idx) + clear_tv(&argvars[idx]); + + if (error != FCERR_NONE) + { + user_func_error(error, printable_func_name(ufunc), + funcexe.fe_found_var); + return FAIL; + } + if (did_emsg > did_emsg_before) + // Error other than from calling the function itself. + return FAIL; + return OK; +} + +/* + * If command modifiers were applied restore them. + */ + static void +may_restore_cmdmod(funclocal_T *funclocal) +{ + if (funclocal->floc_restore_cmdmod) + { + cmdmod.cmod_filter_regmatch.regprog = NULL; + undo_cmdmod(&cmdmod); + cmdmod = funclocal->floc_save_cmdmod; + funclocal->floc_restore_cmdmod = FALSE; + } +} + +/* + * Return TRUE if an error was given (not caught in try/catch) or CTRL-C was + * pressed. + */ + static int +vim9_aborting(int prev_uncaught_emsg) +{ + return uncaught_emsg > prev_uncaught_emsg || got_int || did_throw; +} + +/* + * Execute a function by "name". + * This can be a builtin function or a user function. + * "iptr" can be used to replace the instruction with a more efficient one. + * Returns FAIL if not found without an error message. + */ + static int +call_by_name( + char_u *name, + int argcount, + ectx_T *ectx, + isn_T *iptr, + dict_T *selfdict) +{ + ufunc_T *ufunc; + + if (builtin_function(name, -1)) + { + int func_idx = find_internal_func(name); + + if (func_idx < 0) // Impossible? + return FAIL; + if (check_internal_func(func_idx, argcount) < 0) + return FAIL; + return call_bfunc(func_idx, argcount, ectx); + } + + ufunc = find_func(name, FALSE); + + if (ufunc == NULL) + { + int prev_uncaught_emsg = uncaught_emsg; + + if (script_autoload(name, TRUE)) + // loaded a package, search for the function again + ufunc = find_func(name, FALSE); + + if (vim9_aborting(prev_uncaught_emsg)) + return FAIL; // bail out if loading the script caused an error + } + + if (ufunc != NULL) + { + if (check_ufunc_arg_types(ufunc, argcount, 0, ectx) == FAIL) + return FAIL; + + return call_ufunc(ufunc, NULL, argcount, ectx, iptr, selfdict); + } + + return FAIL; +} + + static int +call_partial( + typval_T *tv, + int argcount_arg, + ectx_T *ectx) +{ + int argcount = argcount_arg; + char_u *name = NULL; + int called_emsg_before = called_emsg; + int res = FAIL; + dict_T *selfdict = NULL; + + if (tv->v_type == VAR_PARTIAL) + { + partial_T *pt = tv->vval.v_partial; + int i; + + if (pt->pt_argc > 0) + { + // Make space for arguments from the partial, shift the "argcount" + // arguments up. + if (GA_GROW_FAILS(&ectx->ec_stack, pt->pt_argc)) + return FAIL; + for (i = 1; i <= argcount; ++i) + *STACK_TV_BOT(-i + pt->pt_argc) = *STACK_TV_BOT(-i); + ectx->ec_stack.ga_len += pt->pt_argc; + argcount += pt->pt_argc; + + // copy the arguments from the partial onto the stack + for (i = 0; i < pt->pt_argc; ++i) + copy_tv(&pt->pt_argv[i], STACK_TV_BOT(-argcount + i)); + } + selfdict = pt->pt_dict; + + if (pt->pt_func != NULL) + return call_ufunc(pt->pt_func, pt, argcount, ectx, NULL, selfdict); + + name = pt->pt_name; + } + else if (tv->v_type == VAR_FUNC) + name = tv->vval.v_string; + if (name != NULL) + { + char_u fname_buf[FLEN_FIXED + 1]; + char_u *tofree = NULL; + funcerror_T error = FCERR_NONE; + char_u *fname; + + // May need to translate <SNR>123_ to K_SNR. + fname = fname_trans_sid(name, fname_buf, &tofree, &error); + if (error != FCERR_NONE) + res = FAIL; + else + res = call_by_name(fname, argcount, ectx, NULL, selfdict); + vim_free(tofree); + } + + if (res == FAIL) + { + if (called_emsg == called_emsg_before) + emsg_funcname(e_unknown_function_str, + name == NULL ? (char_u *)"[unknown]" : name); + return FAIL; + } + return OK; +} + +/* + * Check if "lock" is VAR_LOCKED or VAR_FIXED. If so give an error and return + * TRUE. + */ + static int +error_if_locked(int lock, char *error) +{ + if (lock & (VAR_LOCKED | VAR_FIXED)) + { + emsg(_(error)); + return TRUE; + } + return FALSE; +} + +/* + * Give an error if "tv" is not a number and return FAIL. + */ + static int +check_for_number(typval_T *tv) +{ + if (tv->v_type != VAR_NUMBER) + { + semsg(_(e_expected_str_but_got_str), + vartype_name(VAR_NUMBER), vartype_name(tv->v_type)); + return FAIL; + } + return OK; +} + +/* + * Store "tv" in variable "name". + * This is for s: and g: variables. + */ + static void +store_var(char_u *name, typval_T *tv) +{ + funccal_entry_T entry; + int flags = ASSIGN_DECL; + + if (tv->v_lock) + flags |= ASSIGN_CONST; + save_funccal(&entry); + set_var_const(name, 0, NULL, tv, FALSE, flags, 0); + restore_funccal(); +} + +/* + * Convert "tv" to a string. + * Return FAIL if not allowed. + */ + static int +do_2string(typval_T *tv, int is_2string_any, int tolerant) +{ + if (tv->v_type == VAR_STRING) + return OK; + + char_u *str; + + if (is_2string_any) + { + switch (tv->v_type) + { + case VAR_SPECIAL: + case VAR_BOOL: + case VAR_NUMBER: + case VAR_FLOAT: + case VAR_BLOB: break; + + case VAR_LIST: + if (tolerant) + { + char_u *s, *e, *p; + garray_T ga; + + ga_init2(&ga, sizeof(char_u *), 1); + + // Convert to NL separated items, then + // escape the items and replace the NL with + // a space. + str = typval2string(tv, TRUE); + if (str == NULL) + return FAIL; + s = str; + while ((e = vim_strchr(s, '\n')) != NULL) + { + *e = NUL; + p = vim_strsave_fnameescape(s, + VSE_NONE); + if (p != NULL) + { + ga_concat(&ga, p); + ga_concat(&ga, (char_u *)" "); + vim_free(p); + } + s = e + 1; + } + vim_free(str); + clear_tv(tv); + tv->v_type = VAR_STRING; + tv->vval.v_string = ga.ga_data; + return OK; + } + // FALLTHROUGH + default: to_string_error(tv->v_type); + return FAIL; + } + } + str = typval_tostring(tv, TRUE); + clear_tv(tv); + tv->v_type = VAR_STRING; + tv->vval.v_string = str; + return OK; +} + +/* + * When the value of "sv" is a null list of dict, allocate it. + */ + static void +allocate_if_null(svar_T *sv) +{ + typval_T *tv = sv->sv_tv; + + switch (tv->v_type) + { + case VAR_LIST: + if (tv->vval.v_list == NULL && sv->sv_type != &t_list_empty) + (void)rettv_list_alloc(tv); + break; + case VAR_DICT: + if (tv->vval.v_dict == NULL && sv->sv_type != &t_dict_empty) + (void)rettv_dict_alloc(tv); + break; + case VAR_BLOB: + if (tv->vval.v_blob == NULL && sv->sv_type != &t_blob_null) + (void)rettv_blob_alloc(tv); + break; + default: + break; + } +} + +/* + * Return the character "str[index]" where "index" is the character index, + * including composing characters. + * If "index" is out of range NULL is returned. + */ + char_u * +char_from_string(char_u *str, varnumber_T index) +{ + size_t nbyte = 0; + varnumber_T nchar = index; + size_t slen; + + if (str == NULL) + return NULL; + slen = STRLEN(str); + + // Do the same as for a list: a negative index counts from the end. + // Optimization to check the first byte to be below 0x80 (and no composing + // character follows) makes this a lot faster. + if (index < 0) + { + int clen = 0; + + for (nbyte = 0; nbyte < slen; ++clen) + { + if (str[nbyte] < 0x80 && str[nbyte + 1] < 0x80) + ++nbyte; + else if (enc_utf8) + nbyte += utfc_ptr2len(str + nbyte); + else + nbyte += mb_ptr2len(str + nbyte); + } + nchar = clen + index; + if (nchar < 0) + // unlike list: index out of range results in empty string + return NULL; + } + + for (nbyte = 0; nchar > 0 && nbyte < slen; --nchar) + { + if (str[nbyte] < 0x80 && str[nbyte + 1] < 0x80) + ++nbyte; + else if (enc_utf8) + nbyte += utfc_ptr2len(str + nbyte); + else + nbyte += mb_ptr2len(str + nbyte); + } + if (nbyte >= slen) + return NULL; + return vim_strnsave(str + nbyte, mb_ptr2len(str + nbyte)); +} + +/* + * Get the byte index for character index "idx" in string "str" with length + * "str_len". Composing characters are included. + * If going over the end return "str_len". + * If "idx" is negative count from the end, -1 is the last character. + * When going over the start return -1. + */ + static long +char_idx2byte(char_u *str, size_t str_len, varnumber_T idx) +{ + varnumber_T nchar = idx; + size_t nbyte = 0; + + if (nchar >= 0) + { + while (nchar > 0 && nbyte < str_len) + { + nbyte += mb_ptr2len(str + nbyte); + --nchar; + } + } + else + { + nbyte = str_len; + while (nchar < 0 && nbyte > 0) + { + --nbyte; + nbyte -= mb_head_off(str, str + nbyte); + ++nchar; + } + if (nchar < 0) + return -1; + } + return (long)nbyte; +} + +/* + * Return the slice "str[first : last]" using character indexes. Composing + * characters are included. + * "exclusive" is TRUE for slice(). + * Return NULL when the result is empty. + */ + char_u * +string_slice(char_u *str, varnumber_T first, varnumber_T last, int exclusive) +{ + long start_byte, end_byte; + size_t slen; + + if (str == NULL) + return NULL; + slen = STRLEN(str); + start_byte = char_idx2byte(str, slen, first); + if (start_byte < 0) + start_byte = 0; // first index very negative: use zero + if ((last == -1 && !exclusive) || last == VARNUM_MAX) + end_byte = (long)slen; + else + { + end_byte = char_idx2byte(str, slen, last); + if (!exclusive && end_byte >= 0 && end_byte < (long)slen) + // end index is inclusive + end_byte += mb_ptr2len(str + end_byte); + } + + if (start_byte >= (long)slen || end_byte <= start_byte) + return NULL; + return vim_strnsave(str + start_byte, end_byte - start_byte); +} + +/* + * Get a script variable for ISN_STORESCRIPT and ISN_LOADSCRIPT. + * When "dfunc_idx" is negative don't give an error. + * Returns NULL for an error. + */ + static svar_T * +get_script_svar(scriptref_T *sref, int dfunc_idx) +{ + scriptitem_T *si = SCRIPT_ITEM(sref->sref_sid); + dfunc_T *dfunc = dfunc_idx < 0 ? NULL + : ((dfunc_T *)def_functions.ga_data) + dfunc_idx; + svar_T *sv; + + if (sref->sref_seq != si->sn_script_seq) + { + // The script was reloaded after the function was compiled, the + // script_idx may not be valid. + if (dfunc != NULL) + semsg(_(e_script_variable_invalid_after_reload_in_function_str), + printable_func_name(dfunc->df_ufunc)); + return NULL; + } + sv = ((svar_T *)si->sn_var_vals.ga_data) + sref->sref_idx; + if (sv->sv_name == NULL) + { + if (dfunc != NULL) + emsg(_(e_script_variable_was_deleted)); + return NULL; + } + if (!equal_type(sv->sv_type, sref->sref_type, 0)) + { + if (dfunc != NULL) + emsg(_(e_script_variable_type_changed)); + return NULL; + } + + if ((sv->sv_flags & SVFLAG_EXPORTED) == 0 + && sref->sref_sid != current_sctx.sc_sid) + { + if (dfunc != NULL) + semsg(_(e_item_not_exported_in_script_str), sv->sv_name); + return NULL; + } + return sv; +} + +/* + * Function passed to do_cmdline() for splitting a script joined by NL + * characters. + */ + static char_u * +get_split_sourceline( + int c UNUSED, + void *cookie, + int indent UNUSED, + getline_opt_T options UNUSED) +{ + source_cookie_T *sp = (source_cookie_T *)cookie; + char_u *p; + char_u *line; + + p = vim_strchr(sp->nextline, '\n'); + if (p == NULL) + { + line = vim_strsave(sp->nextline); + sp->nextline += STRLEN(sp->nextline); + } + else + { + line = vim_strnsave(sp->nextline, p - sp->nextline); + sp->nextline = p + 1; + } + return line; +} + +/* + * Execute a function by "name". + * This can be a builtin function, user function or a funcref. + * "iptr" can be used to replace the instruction with a more efficient one. + */ + static int +call_eval_func( + char_u *name, + int argcount, + ectx_T *ectx, + isn_T *iptr) +{ + int called_emsg_before = called_emsg; + int res; + + res = call_by_name(name, argcount, ectx, iptr, NULL); + if (res == FAIL && called_emsg == called_emsg_before) + { + dictitem_T *v; + + v = find_var(name, NULL, FALSE); + if (v == NULL || (v->di_tv.v_type != VAR_PARTIAL + && v->di_tv.v_type != VAR_FUNC)) + { + emsg_funcname(e_unknown_function_str, name); + return FAIL; + } + return call_partial(&v->di_tv, argcount, ectx); + } + return res; +} + +/* + * When a function reference is used, fill a partial with the information + * needed, especially when it is used as a closure. + */ + int +fill_partial_and_closure( + partial_T *pt, + ufunc_T *ufunc, + loopvarinfo_T *lvi, + ectx_T *ectx) +{ + pt->pt_func = ufunc; + pt->pt_refcount = 1; + + if (ufunc->uf_flags & FC_CLOSURE) + { + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx; + + // The closure may need to find arguments and local variables of the + // current function in the stack. + pt->pt_outer.out_stack = &ectx->ec_stack; + pt->pt_outer.out_frame_idx = ectx->ec_frame_idx; + if (ectx->ec_outer_ref != NULL) + { + // The current context already has a context, link to that one. + pt->pt_outer.out_up = ectx->ec_outer_ref->or_outer; + if (ectx->ec_outer_ref->or_partial != NULL) + { + pt->pt_outer.out_up_partial = ectx->ec_outer_ref->or_partial; + ++pt->pt_outer.out_up_partial->pt_refcount; + } + } + + if (lvi != NULL) + { + int depth; + + // The closure may need to find variables defined inside a loop, + // for every nested loop. A new reference is made every time, + // ISN_ENDLOOP will check if they are actually used. + for (depth = 0; depth < lvi->lvi_depth; ++depth) + { + pt->pt_outer.out_loop[depth].stack = &ectx->ec_stack; + pt->pt_outer.out_loop[depth].var_idx = ectx->ec_frame_idx + + STACK_FRAME_SIZE + lvi->lvi_loop[depth].var_idx; + pt->pt_outer.out_loop[depth].var_count = + lvi->lvi_loop[depth].var_count; + } + pt->pt_outer.out_loop_size = lvi->lvi_depth; + } + else + pt->pt_outer.out_loop_size = 0; + + // If the function currently executing returns and the closure is still + // being referenced, we need to make a copy of the context (arguments + // and local variables) so that the closure can use it later. + // Store a reference to the partial so we can handle that. + if (GA_GROW_FAILS(&ectx->ec_funcrefs, 1)) + { + vim_free(pt); + return FAIL; + } + // Extra variable keeps the count of closures created in the current + // function call. + ++(((typval_T *)ectx->ec_stack.ga_data) + ectx->ec_frame_idx + + STACK_FRAME_SIZE + dfunc->df_varcount)->vval.v_number; + + ((partial_T **)ectx->ec_funcrefs.ga_data)[ectx->ec_funcrefs.ga_len] + = pt; + ++pt->pt_refcount; + ++ectx->ec_funcrefs.ga_len; + } + ++ufunc->uf_refcount; + return OK; +} + +/* + * Execute iptr->isn_arg.string as an Ex command. + */ + static int +exec_command(isn_T *iptr) +{ + source_cookie_T cookie; + + SOURCING_LNUM = iptr->isn_lnum; + // Pass getsourceline to get an error for a missing ":end" command. + CLEAR_FIELD(cookie); + cookie.sourcing_lnum = iptr->isn_lnum - 1; + if (do_cmdline(iptr->isn_arg.string, + getsourceline, &cookie, + DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED) == FAIL + || did_emsg) + return FAIL; + return OK; +} + +/* + * If script "sid" is not loaded yet then load it now. + * Caller must make sure "sid" is a valid script ID. + * "loaded" is set to TRUE if the script had to be loaded. + * Returns FAIL if loading fails, OK if already loaded or loaded now. + */ + int +may_load_script(int sid, int *loaded) +{ + scriptitem_T *si = SCRIPT_ITEM(sid); + + if (si->sn_state == SN_STATE_NOT_LOADED) + { + *loaded = TRUE; + if (do_source(si->sn_name, FALSE, DOSO_NONE, NULL) == FAIL) + { + semsg(_(e_cant_open_file_str), si->sn_name); + return FAIL; + } + } + return OK; +} + +// used for v_instr of typval of VAR_INSTR +struct instr_S { + ectx_T *instr_ectx; + isn_T *instr_instr; +}; + +// used for substitute_instr +typedef struct subs_expr_S { + ectx_T *subs_ectx; + isn_T *subs_instr; + int subs_status; +} subs_expr_T; + +// Set when calling do_debug(). +static ectx_T *debug_context = NULL; +static int debug_var_count; + +/* + * When debugging lookup "name" and return the typeval. + * When not found return NULL. + */ + typval_T * +lookup_debug_var(char_u *name) +{ + int idx; + dfunc_T *dfunc; + ufunc_T *ufunc; + ectx_T *ectx = debug_context; + int varargs_off; + + if (ectx == NULL) + return NULL; + dfunc = ((dfunc_T *)def_functions.ga_data) + ectx->ec_dfunc_idx; + + // Go through the local variable names, from last to first. + for (idx = debug_var_count - 1; idx >= 0; --idx) + { + char_u *varname = ((char_u **)dfunc->df_var_names.ga_data)[idx]; + + // the variable name may be NULL when not available in this block + if (varname != NULL && STRCMP(varname, name) == 0) + return STACK_TV_VAR(idx); + } + + // Go through argument names. + ufunc = dfunc->df_ufunc; + varargs_off = ufunc->uf_va_name == NULL ? 0 : 1; + for (idx = 0; idx < ufunc->uf_args.ga_len; ++idx) + if (STRCMP(((char_u **)(ufunc->uf_args.ga_data))[idx], name) == 0) + return STACK_TV(ectx->ec_frame_idx - ufunc->uf_args.ga_len + - varargs_off + idx); + if (ufunc->uf_va_name != NULL && STRCMP(ufunc->uf_va_name, name) == 0) + return STACK_TV(ectx->ec_frame_idx - 1); + + return NULL; +} + +/* + * Return TRUE if there might be a breakpoint in "ufunc", which is when a + * breakpoint was set in that function or when there is any expression. + */ + int +may_break_in_function(ufunc_T *ufunc) +{ + return ufunc->uf_has_breakpoint || debug_has_expr_breakpoint(); +} + + static void +handle_debug(isn_T *iptr, ectx_T *ectx) +{ + char_u *line; + ufunc_T *ufunc = (((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx)->df_ufunc; + isn_T *ni; + int end_lnum = iptr->isn_lnum; + garray_T ga; + int lnum; + + if (ex_nesting_level > debug_break_level) + { + linenr_T breakpoint; + + if (!may_break_in_function(ufunc)) + return; + + // check for the next breakpoint if needed + breakpoint = dbg_find_breakpoint(FALSE, ufunc->uf_name, + iptr->isn_arg.debug.dbg_break_lnum); + if (breakpoint <= 0 || breakpoint > iptr->isn_lnum) + return; + } + + SOURCING_LNUM = iptr->isn_lnum; + debug_context = ectx; + debug_var_count = iptr->isn_arg.debug.dbg_var_names_len; + + for (ni = iptr + 1; ni->isn_type != ISN_FINISH; ++ni) + if (ni->isn_type == ISN_DEBUG + || ni->isn_type == ISN_RETURN + || ni->isn_type == ISN_RETURN_OBJECT + || ni->isn_type == ISN_RETURN_VOID) + { + end_lnum = ni->isn_lnum + (ni->isn_type == ISN_DEBUG ? 0 : 1); + break; + } + + if (end_lnum > iptr->isn_lnum) + { + ga_init2(&ga, sizeof(char_u *), 10); + for (lnum = iptr->isn_lnum; lnum < end_lnum + && lnum <= ufunc->uf_lines.ga_len; ++lnum) + { + char_u *p = ((char_u **)ufunc->uf_lines.ga_data)[lnum - 1]; + + if (p == NULL) + continue; // left over from continuation line + p = skipwhite(p); + if (*p == '#') + break; + if (GA_GROW_OK(&ga, 1)) + ((char_u **)(ga.ga_data))[ga.ga_len++] = p; + if (STRNCMP(p, "def ", 4) == 0) + break; + } + line = ga_concat_strings(&ga, " "); + vim_free(ga.ga_data); + } + else + line = ((char_u **)ufunc->uf_lines.ga_data)[iptr->isn_lnum - 1]; + + do_debug(line == NULL ? (char_u *)"[empty]" : line); + debug_context = NULL; + + if (end_lnum > iptr->isn_lnum) + vim_free(line); +} + +/* + * Store a value in a list, dict, blob or object variable. + * Returns OK, FAIL or NOTDONE (uncatchable error). + */ + static int +execute_storeindex(isn_T *iptr, ectx_T *ectx) +{ + vartype_T dest_type = iptr->isn_arg.storeindex.si_vartype; + typval_T *tv; + typval_T *tv_idx = STACK_TV_BOT(-2); + long lidx = 0; + typval_T *tv_dest = STACK_TV_BOT(-1); + int status = OK; + + if (tv_idx->v_type == VAR_NUMBER) + lidx = (long)tv_idx->vval.v_number; + + // Stack contains: + // -3 value to be stored + // -2 index + // -1 dict, list, blob or object + tv = STACK_TV_BOT(-3); + SOURCING_LNUM = iptr->isn_lnum; + if (dest_type == VAR_ANY) + { + dest_type = tv_dest->v_type; + if (dest_type == VAR_DICT) + status = do_2string(tv_idx, TRUE, FALSE); + else if (dest_type == VAR_OBJECT && tv_idx->v_type == VAR_STRING) + { + // Need to get the member index now that the class is known. + object_T *obj = tv_dest->vval.v_object; + class_T *cl = obj->obj_class; + char_u *member = tv_idx->vval.v_string; + + ocmember_T *m = NULL; + for (int i = 0; i < cl->class_obj_member_count; ++i) + { + m = &cl->class_obj_members[i]; + if (STRCMP(member, m->ocm_name) == 0) + { + if (*member == '_') + { + semsg(_(e_cannot_access_private_member_str), + m->ocm_name); + status = FAIL; + } + + lidx = i; + break; + } + m = NULL; + } + + if (m == NULL) + { + semsg(_(e_member_not_found_on_object_str_str), + cl->class_name, member); + status = FAIL; + } + } + else if ((dest_type == VAR_LIST || dest_type == VAR_OBJECT) + && tv_idx->v_type != VAR_NUMBER) + { + emsg(_(e_number_expected)); + status = FAIL; + } + } + + if (status == OK) + { + if (dest_type == VAR_LIST) + { + list_T *list = tv_dest->vval.v_list; + + if (list == NULL) + { + emsg(_(e_list_not_set)); + return FAIL; + } + if (lidx < 0 && list->lv_len + lidx >= 0) + // negative index is relative to the end + lidx = list->lv_len + lidx; + if (lidx < 0 || lidx > list->lv_len) + { + semsg(_(e_list_index_out_of_range_nr), lidx); + return FAIL; + } + if (lidx < list->lv_len) + { + listitem_T *li = list_find(list, lidx); + + if (error_if_locked(li->li_tv.v_lock, + e_cannot_change_locked_list_item)) + return FAIL; + // overwrite existing list item + clear_tv(&li->li_tv); + li->li_tv = *tv; + } + else + { + if (error_if_locked(list->lv_lock, e_cannot_change_locked_list)) + return FAIL; + // append to list, only fails when out of memory + if (list_append_tv(list, tv) == FAIL) + return NOTDONE; + clear_tv(tv); + } + } + else if (dest_type == VAR_DICT) + { + char_u *key = tv_idx->vval.v_string; + dict_T *dict = tv_dest->vval.v_dict; + dictitem_T *di; + + SOURCING_LNUM = iptr->isn_lnum; + if (dict == NULL) + { + emsg(_(e_dictionary_not_set)); + return FAIL; + } + if (key == NULL) + key = (char_u *)""; + di = dict_find(dict, key, -1); + if (di != NULL) + { + if (error_if_locked(di->di_tv.v_lock, + e_cannot_change_dict_item)) + return FAIL; + // overwrite existing value + clear_tv(&di->di_tv); + di->di_tv = *tv; + } + else + { + if (error_if_locked(dict->dv_lock, e_cannot_change_dict)) + return FAIL; + // add to dict, only fails when out of memory + if (dict_add_tv(dict, (char *)key, tv) == FAIL) + return NOTDONE; + clear_tv(tv); + } + } + else if (dest_type == VAR_BLOB) + { + blob_T *blob = tv_dest->vval.v_blob; + varnumber_T nr; + int error = FALSE; + int len; + + if (blob == NULL) + { + emsg(_(e_blob_not_set)); + return FAIL; + } + len = blob_len(blob); + if (lidx < 0 && len + lidx >= 0) + // negative index is relative to the end + lidx = len + lidx; + + // Can add one byte at the end. + if (lidx < 0 || lidx > len) + { + semsg(_(e_blob_index_out_of_range_nr), lidx); + return FAIL; + } + if (value_check_lock(blob->bv_lock, (char_u *)"blob", FALSE)) + return FAIL; + nr = tv_get_number_chk(tv, &error); + if (error) + return FAIL; + blob_set_append(blob, lidx, nr); + } + else if (dest_type == VAR_CLASS || dest_type == VAR_OBJECT) + { + object_T *obj = tv_dest->vval.v_object; + typval_T *otv = (typval_T *)(obj + 1); + + class_T *itf = iptr->isn_arg.storeindex.si_class; + if (itf != NULL) + // convert interface member index to class member index + lidx = object_index_from_itf_index(itf, FALSE, + lidx, obj->obj_class); + + clear_tv(&otv[lidx]); + otv[lidx] = *tv; + } + else + { + status = FAIL; + semsg(_(e_cannot_index_str), vartype_name(dest_type)); + } + } + + clear_tv(tv_idx); + clear_tv(tv_dest); + ectx->ec_stack.ga_len -= 3; + if (status == FAIL) + { + clear_tv(tv); + return FAIL; + } + return OK; +} + +/* + * Store a value in a list or blob range. + */ + static int +execute_storerange(isn_T *iptr, ectx_T *ectx) +{ + typval_T *tv; + typval_T *tv_idx1 = STACK_TV_BOT(-3); + typval_T *tv_idx2 = STACK_TV_BOT(-2); + typval_T *tv_dest = STACK_TV_BOT(-1); + int status = OK; + + // Stack contains: + // -4 value to be stored + // -3 first index or "none" + // -2 second index or "none" + // -1 destination list or blob + tv = STACK_TV_BOT(-4); + SOURCING_LNUM = iptr->isn_lnum; + if (tv_dest->v_type == VAR_LIST) + { + long n1; + long n2; + listitem_T *li1; + + n1 = (long)tv_get_number_chk(tv_idx1, NULL); + if (tv_idx2->v_type == VAR_SPECIAL + && tv_idx2->vval.v_number == VVAL_NONE) + n2 = list_len(tv_dest->vval.v_list) - 1; + else + n2 = (long)tv_get_number_chk(tv_idx2, NULL); + + li1 = check_range_index_one(tv_dest->vval.v_list, &n1, TRUE, FALSE); + if (li1 == NULL) + status = FAIL; + else + { + status = check_range_index_two(tv_dest->vval.v_list, + &n1, li1, &n2, FALSE); + if (status != FAIL) + status = list_assign_range( + tv_dest->vval.v_list, + tv->vval.v_list, + n1, + n2, + tv_idx2->v_type == VAR_SPECIAL, + (char_u *)"=", + (char_u *)"[unknown]"); + } + } + else if (tv_dest->v_type == VAR_BLOB) + { + varnumber_T n1; + varnumber_T n2; + long bloblen; + + n1 = tv_get_number_chk(tv_idx1, NULL); + if (tv_idx2->v_type == VAR_SPECIAL + && tv_idx2->vval.v_number == VVAL_NONE) + n2 = blob_len(tv_dest->vval.v_blob) - 1; + else + n2 = tv_get_number_chk(tv_idx2, NULL); + bloblen = blob_len(tv_dest->vval.v_blob); + + if (check_blob_index(bloblen, n1, FALSE) == FAIL + || check_blob_range(bloblen, n1, n2, FALSE) == FAIL) + status = FAIL; + else + status = blob_set_range(tv_dest->vval.v_blob, n1, n2, tv); + } + else + { + status = FAIL; + emsg(_(e_list_or_blob_required)); + } + + clear_tv(tv_idx1); + clear_tv(tv_idx2); + clear_tv(tv_dest); + ectx->ec_stack.ga_len -= 4; + clear_tv(tv); + + return status; +} + +/* + * Unlet item in list or dict variable. + */ + static int +execute_unletindex(isn_T *iptr, ectx_T *ectx) +{ + typval_T *tv_idx = STACK_TV_BOT(-2); + typval_T *tv_dest = STACK_TV_BOT(-1); + int status = OK; + + // Stack contains: + // -2 index + // -1 dict or list + SOURCING_LNUM = iptr->isn_lnum; + if (tv_dest->v_type == VAR_DICT) + { + // unlet a dict item, index must be a string + if (tv_idx->v_type != VAR_STRING && tv_idx->v_type != VAR_NUMBER) + { + semsg(_(e_expected_str_but_got_str), + vartype_name(VAR_STRING), + vartype_name(tv_idx->v_type)); + status = FAIL; + } + else + { + dict_T *d = tv_dest->vval.v_dict; + char_u *key; + dictitem_T *di = NULL; + + if (d != NULL && value_check_lock( + d->dv_lock, NULL, FALSE)) + status = FAIL; + else + { + if (tv_idx->v_type == VAR_STRING) + { + key = tv_idx->vval.v_string; + if (key == NULL) + key = (char_u *)""; + } + else + { + key = tv_get_string(tv_idx); + } + if (d != NULL) + di = dict_find(d, key, (int)STRLEN(key)); + if (di == NULL) + { + // NULL dict is equivalent to empty dict + semsg(_(e_key_not_present_in_dictionary_str), key); + status = FAIL; + } + else if (var_check_fixed(di->di_flags, + NULL, FALSE) + || var_check_ro(di->di_flags, + NULL, FALSE)) + status = FAIL; + else + dictitem_remove(d, di, "unlet"); + } + } + } + else if (tv_dest->v_type == VAR_LIST) + { + // unlet a List item, index must be a number + if (check_for_number(tv_idx) == FAIL) + { + status = FAIL; + } + else + { + list_T *l = tv_dest->vval.v_list; + long n = (long)tv_idx->vval.v_number; + + if (l != NULL && value_check_lock( + l->lv_lock, NULL, FALSE)) + status = FAIL; + else + { + listitem_T *li = list_find(l, n); + + if (li == NULL) + { + semsg(_(e_list_index_out_of_range_nr), n); + status = FAIL; + } + else + listitem_remove(l, li); + } + } + } + else + { + status = FAIL; + semsg(_(e_cannot_index_str), + vartype_name(tv_dest->v_type)); + } + + clear_tv(tv_idx); + clear_tv(tv_dest); + ectx->ec_stack.ga_len -= 2; + + return status; +} + +/* + * Unlet a range of items in a list variable. + */ + static int +execute_unletrange(isn_T *iptr, ectx_T *ectx) +{ + // Stack contains: + // -3 index1 + // -2 index2 + // -1 dict or list + typval_T *tv_idx1 = STACK_TV_BOT(-3); + typval_T *tv_idx2 = STACK_TV_BOT(-2); + typval_T *tv_dest = STACK_TV_BOT(-1); + int status = OK; + + if (tv_dest->v_type == VAR_LIST) + { + // indexes must be a number + SOURCING_LNUM = iptr->isn_lnum; + if (check_for_number(tv_idx1) == FAIL + || (tv_idx2->v_type != VAR_SPECIAL + && check_for_number(tv_idx2) == FAIL)) + { + status = FAIL; + } + else + { + list_T *l = tv_dest->vval.v_list; + long n1 = (long)tv_idx1->vval.v_number; + long n2 = tv_idx2->v_type == VAR_SPECIAL + ? 0 : (long)tv_idx2->vval.v_number; + listitem_T *li; + + li = list_find_index(l, &n1); + if (li == NULL) + { + semsg(_(e_list_index_out_of_range_nr), + (long)tv_idx1->vval.v_number); + status = FAIL; + } + else + { + if (n1 < 0) + n1 = list_idx_of_item(l, li); + if (n2 < 0) + { + listitem_T *li2 = list_find(l, n2); + + if (li2 == NULL) + { + semsg(_(e_list_index_out_of_range_nr), n2); + status = FAIL; + } + else + n2 = list_idx_of_item(l, li2); + } + if (status != FAIL + && tv_idx2->v_type != VAR_SPECIAL + && n2 < n1) + { + semsg(_(e_list_index_out_of_range_nr), n2); + status = FAIL; + } + if (status != FAIL) + list_unlet_range(l, li, n1, + tv_idx2->v_type != VAR_SPECIAL, n2); + } + } + } + else + { + status = FAIL; + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_cannot_index_str), + vartype_name(tv_dest->v_type)); + } + + clear_tv(tv_idx1); + clear_tv(tv_idx2); + clear_tv(tv_dest); + ectx->ec_stack.ga_len -= 3; + + return status; +} + +/* + * Top of a for loop. + */ + static int +execute_for(isn_T *iptr, ectx_T *ectx) +{ + typval_T *tv; + int jump = FALSE; + typval_T *ltv = STACK_TV_BOT(-1); + typval_T *idxtv = + STACK_TV_VAR(iptr->isn_arg.forloop.for_loop_idx); + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + return FAIL; + if (ltv->v_type == VAR_LIST) + { + list_T *list = ltv->vval.v_list; + + // push the next item from the list + ++idxtv->vval.v_number; + if (list == NULL + || idxtv->vval.v_number >= list->lv_len) + { + jump = TRUE; + } + else if (list->lv_first == &range_list_item) + { + // non-materialized range() list + tv = STACK_TV_BOT(0); + tv->v_type = VAR_NUMBER; + tv->v_lock = 0; + tv->vval.v_number = list_find_nr( + list, idxtv->vval.v_number, NULL); + ++ectx->ec_stack.ga_len; + } + else + { + listitem_T *li = list_find(list, + idxtv->vval.v_number); + + copy_tv(&li->li_tv, STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + } + } + else if (ltv->v_type == VAR_STRING) + { + char_u *str = ltv->vval.v_string; + + // The index is for the last byte of the previous + // character. + ++idxtv->vval.v_number; + if (str == NULL || str[idxtv->vval.v_number] == NUL) + { + jump = TRUE; + } + else + { + int clen = mb_ptr2len(str + idxtv->vval.v_number); + + // Push the next character from the string. + tv = STACK_TV_BOT(0); + tv->v_type = VAR_STRING; + tv->vval.v_string = vim_strnsave( + str + idxtv->vval.v_number, clen); + ++ectx->ec_stack.ga_len; + idxtv->vval.v_number += clen - 1; + } + } + else if (ltv->v_type == VAR_BLOB) + { + blob_T *blob = ltv->vval.v_blob; + + // When we get here the first time make a copy of the + // blob, so that the iteration still works when it is + // changed. + if (idxtv->vval.v_number == -1 && blob != NULL) + { + blob_copy(blob, ltv); + blob_unref(blob); + blob = ltv->vval.v_blob; + } + + // The index is for the previous byte. + ++idxtv->vval.v_number; + if (blob == NULL || idxtv->vval.v_number >= blob_len(blob)) + { + jump = TRUE; + } + else + { + // Push the next byte from the blob. + tv = STACK_TV_BOT(0); + tv->v_type = VAR_NUMBER; + tv->vval.v_number = blob_get(blob, + idxtv->vval.v_number); + ++ectx->ec_stack.ga_len; + } + } + else + { + semsg(_(e_for_loop_on_str_not_supported), + vartype_name(ltv->v_type)); + return FAIL; + } + + if (jump) + { + // past the end of the list/string/blob, jump to "endfor" + ectx->ec_iidx = iptr->isn_arg.forloop.for_end; + may_restore_cmdmod(&ectx->ec_funclocal); + } + else + { + // Store the current number of funcrefs, this may be used in + // ISN_LOOPEND. The variable index is always one more than the loop + // variable index. + tv = STACK_TV_VAR(iptr->isn_arg.forloop.for_loop_idx + 1); + tv->vval.v_number = ectx->ec_funcrefs.ga_len; + } + + return OK; +} + +/* + * Code for handling variables declared inside a loop and used in a closure. + * This is very similar to what is done with funcstack_T. The difference is + * that the funcstack_T has the scope of a function, while a loopvars_T has the + * scope of the block inside a loop and each loop may have its own. + */ + +// Double linked list of loopvars_T in use. +static loopvars_T *first_loopvars = NULL; + + static void +add_loopvars_to_list(loopvars_T *loopvars) +{ + // Link in list of loopvarss. + if (first_loopvars != NULL) + first_loopvars->lvs_prev = loopvars; + loopvars->lvs_next = first_loopvars; + loopvars->lvs_prev = NULL; + first_loopvars = loopvars; +} + + static void +remove_loopvars_from_list(loopvars_T *loopvars) +{ + if (loopvars->lvs_prev == NULL) + first_loopvars = loopvars->lvs_next; + else + loopvars->lvs_prev->lvs_next = loopvars->lvs_next; + if (loopvars->lvs_next != NULL) + loopvars->lvs_next->lvs_prev = loopvars->lvs_prev; +} + +/* + * End of a for or while loop: Handle any variables used by a closure. + */ + static int +execute_endloop(isn_T *iptr, ectx_T *ectx) +{ + endloop_T *endloop = &iptr->isn_arg.endloop; + typval_T *tv_refcount = STACK_TV_VAR(endloop->end_funcref_idx); + int prev_closure_count = tv_refcount->vval.v_number; + int depth = endloop->end_depth; + garray_T *gap = &ectx->ec_funcrefs; + int closure_in_use = FALSE; + loopvars_T *loopvars; + typval_T *stack; + int idx; + + // Check if any created closure is still being referenced and loopvars have + // not been saved yet for the current depth. + for (idx = prev_closure_count; idx < gap->ga_len; ++idx) + { + partial_T *pt = ((partial_T **)gap->ga_data)[idx]; + + if (pt->pt_refcount > 1 && pt->pt_loopvars[depth] == NULL) + { + int refcount = pt->pt_refcount; + int i; + + // A Reference in a variable inside the loop doesn't count, it gets + // unreferenced at the end of the loop. + for (i = 0; i < endloop->end_var_count; ++i) + { + typval_T *stv = STACK_TV_VAR(endloop->end_var_idx + i); + + if (stv->v_type == VAR_PARTIAL && pt == stv->vval.v_partial) + --refcount; + } + if (refcount > 1) + { + closure_in_use = TRUE; + break; + } + } + } + + // If no function reference were created since the start of the loop block + // or it is no longer referenced there is nothing to do. + if (!closure_in_use) + return OK; + + // A closure is using variables declared inside the loop. + // Move them to the called function. + loopvars = ALLOC_CLEAR_ONE(loopvars_T); + if (loopvars == NULL) + return FAIL; + + loopvars->lvs_ga.ga_len = endloop->end_var_count; + stack = ALLOC_CLEAR_MULT(typval_T, loopvars->lvs_ga.ga_len); + loopvars->lvs_ga.ga_data = stack; + if (stack == NULL) + { + vim_free(loopvars); + return FAIL; + } + add_loopvars_to_list(loopvars); + + // Move the variable values. + for (idx = 0; idx < endloop->end_var_count; ++idx) + { + typval_T *tv = STACK_TV_VAR(endloop->end_var_idx + idx); + + *(stack + idx) = *tv; + tv->v_type = VAR_UNKNOWN; + } + + for (idx = prev_closure_count; idx < gap->ga_len; ++idx) + { + partial_T *pt = ((partial_T **)gap->ga_data)[idx]; + + if (pt->pt_refcount > 1 && pt->pt_loopvars[depth] == NULL) + { + ++loopvars->lvs_refcount; + pt->pt_loopvars[depth] = loopvars; + + pt->pt_outer.out_loop[depth].stack = &loopvars->lvs_ga; + pt->pt_outer.out_loop[depth].var_idx -= + ectx->ec_frame_idx + STACK_FRAME_SIZE + endloop->end_var_idx; + } + } + + return OK; +} + +/* + * Called when a partial is freed or its reference count goes down to one. The + * loopvars may be the only reference to the partials in the local variables. + * Go over all of them, the funcref and can be freed if all partials + * referencing the loopvars have a reference count of one. + * Return TRUE if it was freed. + */ + int +loopvars_check_refcount(loopvars_T *loopvars) +{ + int i; + garray_T *gap = &loopvars->lvs_ga; + int done = 0; + typval_T *stack = gap->ga_data; + + if (loopvars->lvs_refcount > loopvars->lvs_min_refcount) + return FALSE; + for (i = 0; i < gap->ga_len; ++i) + { + typval_T *tv = ((typval_T *)gap->ga_data) + i; + + if (tv->v_type == VAR_PARTIAL && tv->vval.v_partial != NULL + && tv->vval.v_partial->pt_refcount == 1) + { + int depth; + + for (depth = 0; depth < MAX_LOOP_DEPTH; ++depth) + if (tv->vval.v_partial->pt_loopvars[depth] == loopvars) + ++done; + } + } + if (done != loopvars->lvs_min_refcount) + return FALSE; + + // All partials referencing the loopvars have a reference count of + // one, thus the loopvars is no longer of use. + stack = gap->ga_data; + for (i = 0; i < gap->ga_len; ++i) + clear_tv(stack + i); + vim_free(stack); + remove_loopvars_from_list(loopvars); + vim_free(loopvars); + return TRUE; +} + +/* + * For garbage collecting: set references in all variables referenced by + * all loopvars. + */ + int +set_ref_in_loopvars(int copyID) +{ + loopvars_T *loopvars; + + for (loopvars = first_loopvars; loopvars != NULL; + loopvars = loopvars->lvs_next) + { + typval_T *stack = loopvars->lvs_ga.ga_data; + int i; + + for (i = 0; i < loopvars->lvs_ga.ga_len; ++i) + if (set_ref_in_item(stack + i, copyID, NULL, NULL)) + return TRUE; // abort + } + return FALSE; +} + +/* + * Load instruction for w:/b:/g:/t: variable. + * "isn_type" is used instead of "iptr->isn_type". + */ + static int +load_namespace_var(ectx_T *ectx, isntype_T isn_type, isn_T *iptr) +{ + dictitem_T *di = NULL; + hashtab_T *ht = NULL; + char namespace; + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + return NOTDONE; + switch (isn_type) + { + case ISN_LOADG: + ht = get_globvar_ht(); + namespace = 'g'; + break; + case ISN_LOADB: + ht = &curbuf->b_vars->dv_hashtab; + namespace = 'b'; + break; + case ISN_LOADW: + ht = &curwin->w_vars->dv_hashtab; + namespace = 'w'; + break; + case ISN_LOADT: + ht = &curtab->tp_vars->dv_hashtab; + namespace = 't'; + break; + default: // Cannot reach here + return NOTDONE; + } + di = find_var_in_ht(ht, 0, iptr->isn_arg.string, TRUE); + + if (di == NULL) + { + if (isn_type == ISN_LOADG) + { + ufunc_T *ufunc = find_func(iptr->isn_arg.string, TRUE); + + // g:Something could be a function + if (ufunc != NULL) + { + typval_T *tv = STACK_TV_BOT(0); + + ++ectx->ec_stack.ga_len; + tv->v_type = VAR_FUNC; + tv->vval.v_string = alloc(STRLEN(iptr->isn_arg.string) + 3); + if (tv->vval.v_string == NULL) + return FAIL; + STRCPY(tv->vval.v_string, "g:"); + STRCPY(tv->vval.v_string + 2, iptr->isn_arg.string); + return OK; + } + } + SOURCING_LNUM = iptr->isn_lnum; + if (vim_strchr(iptr->isn_arg.string, AUTOLOAD_CHAR) != NULL) + // no check if the item exists in the script but + // isn't exported, it is too complicated + semsg(_(e_item_not_found_in_script_str), iptr->isn_arg.string); + else + semsg(_(e_undefined_variable_char_str), + namespace, iptr->isn_arg.string); + return FAIL; + } + else + { + copy_tv(&di->di_tv, STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + } + return OK; +} + + + static void +object_required_error(typval_T *tv) +{ + garray_T type_list; + ga_init2(&type_list, sizeof(type_T *), 10); + type_T *type = typval2type(tv, get_copyID(), &type_list, TVTT_DO_MEMBER); + char *tofree = NULL; + char *typename = type_name(type, &tofree); + semsg(_(e_object_required_found_str), typename); + vim_free(tofree); + clear_type_list(&type_list); +} + +/* + * Execute instructions in execution context "ectx". + * Return OK or FAIL; + */ + static int +exec_instructions(ectx_T *ectx) +{ + int ret = FAIL; + int save_trylevel_at_start = ectx->ec_trylevel_at_start; + int dict_stack_len_at_start = dict_stack.ga_len; + + // Start execution at the first instruction. + ectx->ec_iidx = 0; + + // Only catch exceptions in this instruction list. + ectx->ec_trylevel_at_start = trylevel; + + for (;;) + { + static int breakcheck_count = 0; // using "static" makes it faster + isn_T *iptr; + typval_T *tv; + + if (unlikely(++breakcheck_count >= 100)) + { + line_breakcheck(); + breakcheck_count = 0; + } + if (unlikely(got_int)) + { + // Turn CTRL-C into an exception. + got_int = FALSE; + if (throw_exception("Vim:Interrupt", ET_INTERRUPT, NULL) == FAIL) + goto theend; + did_throw = TRUE; + } + + if (unlikely(did_emsg && msg_list != NULL && *msg_list != NULL)) + { + // Turn an error message into an exception. + did_emsg = FALSE; + if (throw_exception(*msg_list, ET_ERROR, NULL) == FAIL) + goto theend; + did_throw = TRUE; + *msg_list = NULL; + } + + if (unlikely(did_throw)) + { + garray_T *trystack = &ectx->ec_trystack; + trycmd_T *trycmd = NULL; + int index = trystack->ga_len; + + // An exception jumps to the first catch, finally, or returns from + // the current function. + while (index > 0) + { + trycmd = ((trycmd_T *)trystack->ga_data) + index - 1; + if (!trycmd->tcd_in_catch || trycmd->tcd_finally_idx != 0) + break; + // In the catch and finally block of this try we have to go up + // one level. + --index; + trycmd = NULL; + } + if (trycmd != NULL && trycmd->tcd_frame_idx == ectx->ec_frame_idx) + { + if (trycmd->tcd_in_catch) + { + // exception inside ":catch", jump to ":finally" once + ectx->ec_iidx = trycmd->tcd_finally_idx; + trycmd->tcd_finally_idx = 0; + } + else + // jump to first ":catch" + ectx->ec_iidx = trycmd->tcd_catch_idx; + trycmd->tcd_in_catch = TRUE; + did_throw = FALSE; // don't come back here until :endtry + trycmd->tcd_did_throw = TRUE; + } + else + { + // Not inside try or need to return from current functions. + // Push a dummy return value. + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + tv->v_type = VAR_NUMBER; + tv->vval.v_number = 0; + ++ectx->ec_stack.ga_len; + if (ectx->ec_frame_idx == ectx->ec_initial_frame_idx) + { + // At the toplevel we are done. + need_rethrow = TRUE; + if (handle_closure_in_use(ectx, FALSE) == FAIL) + goto theend; + goto done; + } + + if (func_return(ectx) == FAIL) + goto theend; + } + continue; + } + + /* + * Big switch on the instruction. Most compilers will be turning this + * into an efficient lookup table, since the "case" values are an enum + * with sequential numbers. It may look ugly, but it should be the + * most efficient way. + */ + iptr = &ectx->ec_instr[ectx->ec_iidx++]; + switch (iptr->isn_type) + { + // Constructor, first instruction in a new() method. + case ISN_CONSTRUCT: + // "this" is always the local variable at index zero + tv = STACK_TV_VAR(0); + tv->v_type = VAR_OBJECT; + tv->vval.v_object = alloc_clear( + iptr->isn_arg.construct.construct_size); + tv->vval.v_object->obj_class = + iptr->isn_arg.construct.construct_class; + ++tv->vval.v_object->obj_class->class_refcount; + tv->vval.v_object->obj_refcount = 1; + object_created(tv->vval.v_object); + break; + + // execute Ex command line + case ISN_EXEC: + if (exec_command(iptr) == FAIL) + goto on_error; + break; + + // execute Ex command line split at NL characters. + case ISN_EXEC_SPLIT: + { + source_cookie_T cookie; + char_u *line; + + SOURCING_LNUM = iptr->isn_lnum; + CLEAR_FIELD(cookie); + cookie.sourcing_lnum = iptr->isn_lnum - 1; + cookie.nextline = iptr->isn_arg.string; + line = get_split_sourceline(0, &cookie, 0, 0); + if (do_cmdline(line, + get_split_sourceline, &cookie, + DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED) + == FAIL + || did_emsg) + { + vim_free(line); + goto on_error; + } + vim_free(line); + } + break; + + // execute Ex command line that is only a range + case ISN_EXECRANGE: + { + exarg_T ea; + char *error = NULL; + + CLEAR_FIELD(ea); + ea.cmdidx = CMD_SIZE; + ea.addr_type = ADDR_LINES; + ea.cmd = iptr->isn_arg.string; + SOURCING_LNUM = iptr->isn_lnum; + parse_cmd_address(&ea, &error, FALSE); + if (ea.cmd == NULL) + goto on_error; + // error is always NULL when using ADDR_LINES + error = ex_range_without_command(&ea); + if (error != NULL) + { + emsg(error); + goto on_error; + } + } + break; + + // Evaluate an expression with legacy syntax, push it onto the + // stack. + case ISN_LEGACY_EVAL: + { + char_u *arg = iptr->isn_arg.string; + int res; + int save_flags = cmdmod.cmod_flags; + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + init_tv(tv); + cmdmod.cmod_flags |= CMOD_LEGACY; + res = eval0(arg, tv, NULL, &EVALARG_EVALUATE); + cmdmod.cmod_flags = save_flags; + if (res == FAIL) + goto on_error; + ++ectx->ec_stack.ga_len; + } + break; + + // push typeval VAR_INSTR with instructions to be executed + case ISN_INSTR: + { + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + tv->vval.v_instr = ALLOC_ONE(instr_T); + if (tv->vval.v_instr == NULL) + goto on_error; + ++ectx->ec_stack.ga_len; + + tv->v_type = VAR_INSTR; + tv->vval.v_instr->instr_ectx = ectx; + tv->vval.v_instr->instr_instr = iptr->isn_arg.instr; + } + break; + + case ISN_SOURCE: + { + int notused; + + SOURCING_LNUM = iptr->isn_lnum; + if (may_load_script((int)iptr->isn_arg.number, ¬used) + == FAIL) + goto on_error; + } + break; + + // execute :substitute with an expression + case ISN_SUBSTITUTE: + { + subs_T *subs = &iptr->isn_arg.subs; + source_cookie_T cookie; + struct subs_expr_S *save_instr = substitute_instr; + struct subs_expr_S subs_instr; + int res; + + subs_instr.subs_ectx = ectx; + subs_instr.subs_instr = subs->subs_instr; + subs_instr.subs_status = OK; + substitute_instr = &subs_instr; + + SOURCING_LNUM = iptr->isn_lnum; + // This is very much like ISN_EXEC + CLEAR_FIELD(cookie); + cookie.sourcing_lnum = iptr->isn_lnum - 1; + res = do_cmdline(subs->subs_cmd, + getsourceline, &cookie, + DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED); + substitute_instr = save_instr; + + if (res == FAIL || did_emsg + || subs_instr.subs_status == FAIL) + goto on_error; + } + break; + + case ISN_FINISH: + goto done; + + case ISN_REDIRSTART: + // create a dummy entry for var_redir_str() + if (alloc_redir_lval() == FAIL) + goto on_error; + + // The output is stored in growarray "redir_ga" until + // redirection ends. + init_redir_ga(); + redir_vname = 1; + break; + + case ISN_REDIREND: + { + char_u *res = get_clear_redir_ga(); + + // End redirection, put redirected text on the stack. + clear_redir_lval(); + redir_vname = 0; + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + { + vim_free(res); + goto theend; + } + tv = STACK_TV_BOT(0); + tv->v_type = VAR_STRING; + tv->vval.v_string = res; + ++ectx->ec_stack.ga_len; + } + break; + + case ISN_CEXPR_AUCMD: +#ifdef FEAT_QUICKFIX + force_abort = TRUE; + if (trigger_cexpr_autocmd(iptr->isn_arg.number) == FAIL) + goto on_error; + force_abort = FALSE; +#endif + break; + + case ISN_CEXPR_CORE: +#ifdef FEAT_QUICKFIX + { + exarg_T ea; + int res; + + CLEAR_FIELD(ea); + ea.cmdidx = iptr->isn_arg.cexpr.cexpr_ref->cer_cmdidx; + ea.forceit = iptr->isn_arg.cexpr.cexpr_ref->cer_forceit; + ea.cmdlinep = &iptr->isn_arg.cexpr.cexpr_ref->cer_cmdline; + --ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(0); + SOURCING_LNUM = iptr->isn_lnum; + res = cexpr_core(&ea, tv); + clear_tv(tv); + if (res == FAIL) + goto on_error; + } +#endif + break; + + // execute Ex command from pieces on the stack + case ISN_EXECCONCAT: + { + int count = iptr->isn_arg.number; + size_t len = 0; + int pass; + int i; + char_u *cmd = NULL; + char_u *str; + + for (pass = 1; pass <= 2; ++pass) + { + for (i = 0; i < count; ++i) + { + tv = STACK_TV_BOT(i - count); + str = tv->vval.v_string; + if (str != NULL && *str != NUL) + { + if (pass == 2) + STRCPY(cmd + len, str); + len += STRLEN(str); + } + if (pass == 2) + clear_tv(tv); + } + if (pass == 1) + { + cmd = alloc(len + 1); + if (unlikely(cmd == NULL)) + goto theend; + len = 0; + } + } + + SOURCING_LNUM = iptr->isn_lnum; + do_cmdline_cmd(cmd); + vim_free(cmd); + } + break; + + // execute :echo {string} ... + case ISN_ECHO: + { + int count = iptr->isn_arg.echo.echo_count; + int atstart = TRUE; + int needclr = TRUE; + int idx; + + for (idx = 0; idx < count; ++idx) + { + tv = STACK_TV_BOT(idx - count); + echo_one(tv, iptr->isn_arg.echo.echo_with_white, + &atstart, &needclr); + clear_tv(tv); + } + if (needclr) + msg_clr_eos(); + ectx->ec_stack.ga_len -= count; + } + break; + + // :execute {string} ... + // :echomsg {string} ... + // :echowindow {string} ... + // :echoconsole {string} ... + // :echoerr {string} ... + case ISN_EXECUTE: + case ISN_ECHOMSG: + case ISN_ECHOWINDOW: + case ISN_ECHOCONSOLE: + case ISN_ECHOERR: + { + int count; + garray_T ga; + char_u buf[NUMBUFLEN]; + char_u *p; + int len; + int failed = FALSE; + int idx; + + if (iptr->isn_type == ISN_ECHOWINDOW) + count = iptr->isn_arg.echowin.ewin_count; + else + count = iptr->isn_arg.number; + ga_init2(&ga, 1, 80); + for (idx = 0; idx < count; ++idx) + { + tv = STACK_TV_BOT(idx - count); + if (iptr->isn_type == ISN_EXECUTE) + { + if (tv->v_type == VAR_CHANNEL + || tv->v_type == VAR_JOB) + { + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_using_invalid_value_as_string_str), + vartype_name(tv->v_type)); + break; + } + else + p = tv_get_string_buf(tv, buf); + } + else + p = tv_stringify(tv, buf); + + len = (int)STRLEN(p); + if (GA_GROW_FAILS(&ga, len + 2)) + failed = TRUE; + else + { + if (ga.ga_len > 0) + ((char_u *)(ga.ga_data))[ga.ga_len++] = ' '; + STRCPY((char_u *)(ga.ga_data) + ga.ga_len, p); + ga.ga_len += len; + } + clear_tv(tv); + } + ectx->ec_stack.ga_len -= count; + if (failed) + { + ga_clear(&ga); + goto on_error; + } + + if (ga.ga_data != NULL) + { + if (iptr->isn_type == ISN_EXECUTE) + { + SOURCING_LNUM = iptr->isn_lnum; + do_cmdline_cmd((char_u *)ga.ga_data); + if (did_emsg) + { + ga_clear(&ga); + goto on_error; + } + } + else + { + msg_sb_eol(); + if (iptr->isn_type == ISN_ECHOMSG) + { + msg_attr(ga.ga_data, echo_attr); + out_flush(); + } +#ifdef HAS_MESSAGE_WINDOW + else if (iptr->isn_type == ISN_ECHOWINDOW) + { + start_echowindow( + iptr->isn_arg.echowin.ewin_time); + msg_attr(ga.ga_data, echo_attr); + end_echowindow(); + } +#endif + else if (iptr->isn_type == ISN_ECHOCONSOLE) + { + ui_write(ga.ga_data, (int)STRLEN(ga.ga_data), + TRUE); + ui_write((char_u *)"\r\n", 2, TRUE); + } + else + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(ga.ga_data); + } + } + } + ga_clear(&ga); + } + break; + + // load local variable or argument + case ISN_LOAD: + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + copy_tv(STACK_TV_VAR(iptr->isn_arg.number), STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + break; + + // load v: variable + case ISN_LOADV: + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + copy_tv(get_vim_var_tv(iptr->isn_arg.number), STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + break; + + // load s: variable in Vim9 script + case ISN_LOADSCRIPT: + { + scriptref_T *sref = iptr->isn_arg.script.scriptref; + svar_T *sv; + + sv = get_script_svar(sref, ectx->ec_dfunc_idx); + if (sv == NULL) + goto theend; + allocate_if_null(sv); + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + copy_tv(sv->sv_tv, STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + } + break; + + // load s: variable in old script or autoload import + case ISN_LOADS: + case ISN_LOADEXPORT: + { + int sid = iptr->isn_arg.loadstore.ls_sid; + hashtab_T *ht = &SCRIPT_VARS(sid); + char_u *name = iptr->isn_arg.loadstore.ls_name; + dictitem_T *di = find_var_in_ht(ht, 0, name, TRUE); + + if (di == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_undefined_variable_str), name); + goto on_error; + } + else + { + if (iptr->isn_type == ISN_LOADEXPORT) + { + int idx = get_script_item_idx(sid, name, 0, + NULL, NULL); + svar_T *sv; + + if (idx >= 0) + { + sv = ((svar_T *)SCRIPT_ITEM(sid) + ->sn_var_vals.ga_data) + idx; + if ((sv->sv_flags & SVFLAG_EXPORTED) == 0) + { + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_item_not_exported_in_script_str), + name); + goto on_error; + } + } + } + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + copy_tv(&di->di_tv, STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + } + } + break; + + // load g:/b:/w:/t: variable + case ISN_LOADG: + case ISN_LOADB: + case ISN_LOADW: + case ISN_LOADT: + { + int res = load_namespace_var(ectx, iptr->isn_type, iptr); + + if (res == NOTDONE) + goto theend; + if (res == FAIL) + goto on_error; + } + + break; + + // load autoload variable + case ISN_LOADAUTO: + { + char_u *name = iptr->isn_arg.string; + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + SOURCING_LNUM = iptr->isn_lnum; + if (eval_variable(name, (int)STRLEN(name), 0, + STACK_TV_BOT(0), NULL, EVAL_VAR_VERBOSE) == FAIL) + goto on_error; + ++ectx->ec_stack.ga_len; + } + break; + + // load g:/b:/w:/t: namespace + case ISN_LOADGDICT: + case ISN_LOADBDICT: + case ISN_LOADWDICT: + case ISN_LOADTDICT: + { + dict_T *d = NULL; + + switch (iptr->isn_type) + { + case ISN_LOADGDICT: d = get_globvar_dict(); break; + case ISN_LOADBDICT: d = curbuf->b_vars; break; + case ISN_LOADWDICT: d = curwin->w_vars; break; + case ISN_LOADTDICT: d = curtab->tp_vars; break; + default: // Cannot reach here + goto theend; + } + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + tv->v_type = VAR_DICT; + tv->v_lock = 0; + tv->vval.v_dict = d; + ++d->dv_refcount; + ++ectx->ec_stack.ga_len; + } + break; + + // load &option + case ISN_LOADOPT: + { + typval_T optval; + char_u *name = iptr->isn_arg.string; + + // This is not expected to fail, name is checked during + // compilation: don't set SOURCING_LNUM. + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + if (eval_option(&name, &optval, TRUE) == FAIL) + goto theend; + *STACK_TV_BOT(0) = optval; + ++ectx->ec_stack.ga_len; + } + break; + + // load $ENV + case ISN_LOADENV: + { + typval_T optval; + char_u *name = iptr->isn_arg.string; + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + // name is always valid, checked when compiling + (void)eval_env_var(&name, &optval, TRUE); + *STACK_TV_BOT(0) = optval; + ++ectx->ec_stack.ga_len; + } + break; + + // load @register + case ISN_LOADREG: + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + tv->v_type = VAR_STRING; + tv->v_lock = 0; + // This may result in NULL, which should be equivalent to an + // empty string. + tv->vval.v_string = get_reg_contents( + iptr->isn_arg.number, GREG_EXPR_SRC); + ++ectx->ec_stack.ga_len; + break; + + // store local variable + case ISN_STORE: + --ectx->ec_stack.ga_len; + tv = STACK_TV_VAR(iptr->isn_arg.number); + clear_tv(tv); + *tv = *STACK_TV_BOT(0); + break; + + // store s: variable in old script or autoload import + case ISN_STORES: + case ISN_STOREEXPORT: + { + int sid = iptr->isn_arg.loadstore.ls_sid; + hashtab_T *ht = &SCRIPT_VARS(sid); + char_u *name = iptr->isn_arg.loadstore.ls_name; + dictitem_T *di = find_var_in_ht(ht, 0, + iptr->isn_type == ISN_STORES + ? name + 2 : name, TRUE); + + --ectx->ec_stack.ga_len; + SOURCING_LNUM = iptr->isn_lnum; + if (di == NULL) + { + if (iptr->isn_type == ISN_STOREEXPORT) + { + semsg(_(e_undefined_variable_str), name); + clear_tv(STACK_TV_BOT(0)); + goto on_error; + } + store_var(name, STACK_TV_BOT(0)); + } + else + { + if (iptr->isn_type == ISN_STOREEXPORT) + { + int idx = get_script_item_idx(sid, name, 0, + NULL, NULL); + + // can this ever fail? + if (idx >= 0) + { + svar_T *sv = ((svar_T *)SCRIPT_ITEM(sid) + ->sn_var_vals.ga_data) + idx; + + if ((sv->sv_flags & SVFLAG_EXPORTED) == 0) + { + semsg(_(e_item_not_exported_in_script_str), + name); + clear_tv(STACK_TV_BOT(0)); + goto on_error; + } + } + } + if (var_check_permission(di, name) == FAIL) + { + clear_tv(STACK_TV_BOT(0)); + goto on_error; + } + clear_tv(&di->di_tv); + di->di_tv = *STACK_TV_BOT(0); + } + } + break; + + // store script-local variable in Vim9 script + case ISN_STORESCRIPT: + { + scriptref_T *sref = iptr->isn_arg.script.scriptref; + svar_T *sv; + + sv = get_script_svar(sref, ectx->ec_dfunc_idx); + if (sv == NULL) + goto theend; + --ectx->ec_stack.ga_len; + + // "const" and "final" are checked at compile time, locking + // the value needs to be checked here. + SOURCING_LNUM = iptr->isn_lnum; + if (value_check_lock(sv->sv_tv->v_lock, sv->sv_name, FALSE)) + { + clear_tv(STACK_TV_BOT(0)); + goto on_error; + } + + clear_tv(sv->sv_tv); + *sv->sv_tv = *STACK_TV_BOT(0); + } + break; + + // store option + case ISN_STOREOPT: + case ISN_STOREFUNCOPT: + { + char_u *opt_name = iptr->isn_arg.storeopt.so_name; + int opt_flags = iptr->isn_arg.storeopt.so_flags; + long n = 0; + char_u *s = NULL; + char *msg; + char_u numbuf[NUMBUFLEN]; + char_u *tofree = NULL; + + --ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(0); + if (tv->v_type == VAR_STRING) + { + s = tv->vval.v_string; + if (s == NULL) + s = (char_u *)""; + } + else if (iptr->isn_type == ISN_STOREFUNCOPT) + { + SOURCING_LNUM = iptr->isn_lnum; + // If the option can be set to a function reference or + // a lambda and the passed value is a function + // reference, then convert it to the name (string) of + // the function reference. + s = tv2string(tv, &tofree, numbuf, 0); + if (s == NULL || *s == NUL) + { + // cannot happen? + clear_tv(tv); + vim_free(tofree); + goto on_error; + } + } + else + // must be VAR_NUMBER, CHECKTYPE makes sure + n = tv->vval.v_number; + msg = set_option_value(opt_name, n, s, opt_flags); + clear_tv(tv); + vim_free(tofree); + if (msg != NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(msg)); + goto on_error; + } + } + break; + + // store $ENV + case ISN_STOREENV: + --ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(0); + vim_setenv_ext(iptr->isn_arg.string, tv_get_string(tv)); + clear_tv(tv); + break; + + // store @r + case ISN_STOREREG: + { + int reg = iptr->isn_arg.number; + + --ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(0); + write_reg_contents(reg, tv_get_string(tv), -1, FALSE); + clear_tv(tv); + } + break; + + // store v: variable + case ISN_STOREV: + --ectx->ec_stack.ga_len; + if (set_vim_var_tv(iptr->isn_arg.number, STACK_TV_BOT(0)) + == FAIL) + // should not happen, type is checked when compiling + goto on_error; + break; + + // store g:/b:/w:/t: variable + case ISN_STOREG: + case ISN_STOREB: + case ISN_STOREW: + case ISN_STORET: + { + dictitem_T *di; + hashtab_T *ht; + char_u *name = iptr->isn_arg.string + 2; + + switch (iptr->isn_type) + { + case ISN_STOREG: + ht = get_globvar_ht(); + break; + case ISN_STOREB: + ht = &curbuf->b_vars->dv_hashtab; + break; + case ISN_STOREW: + ht = &curwin->w_vars->dv_hashtab; + break; + case ISN_STORET: + ht = &curtab->tp_vars->dv_hashtab; + break; + default: // Cannot reach here + goto theend; + } + + --ectx->ec_stack.ga_len; + di = find_var_in_ht(ht, 0, name, TRUE); + if (di == NULL) + store_var(iptr->isn_arg.string, STACK_TV_BOT(0)); + else + { + SOURCING_LNUM = iptr->isn_lnum; + if (var_check_permission(di, name) == FAIL) + goto on_error; + clear_tv(&di->di_tv); + di->di_tv = *STACK_TV_BOT(0); + } + } + break; + + // store an autoload variable + case ISN_STOREAUTO: + SOURCING_LNUM = iptr->isn_lnum; + set_var(iptr->isn_arg.string, STACK_TV_BOT(-1), TRUE); + clear_tv(STACK_TV_BOT(-1)); + --ectx->ec_stack.ga_len; + break; + + // store number in local variable + case ISN_STORENR: + tv = STACK_TV_VAR(iptr->isn_arg.storenr.stnr_idx); + clear_tv(tv); + tv->v_type = VAR_NUMBER; + tv->vval.v_number = iptr->isn_arg.storenr.stnr_val; + break; + + // Store a value in a list, dict, blob or object variable. + case ISN_STOREINDEX: + { + int res = execute_storeindex(iptr, ectx); + + if (res == FAIL) + goto on_error; + if (res == NOTDONE) + goto theend; + } + break; + + // store value in list or blob range + case ISN_STORERANGE: + if (execute_storerange(iptr, ectx) == FAIL) + goto on_error; + break; + + case ISN_LOAD_CLASSMEMBER: + { + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + classmember_T *cm = &iptr->isn_arg.classmember; + *STACK_TV_BOT(0) = + cm->cm_class->class_members_tv[cm->cm_idx]; + ++ectx->ec_stack.ga_len; + } + break; + + case ISN_STORE_CLASSMEMBER: + { + classmember_T *cm = &iptr->isn_arg.classmember; + tv = &cm->cm_class->class_members_tv[cm->cm_idx]; + clear_tv(tv); + *tv = *STACK_TV_BOT(-1); + --ectx->ec_stack.ga_len; + } + break; + + // Load or store variable or argument from outer scope. + case ISN_LOADOUTER: + case ISN_STOREOUTER: + { + int depth = iptr->isn_arg.outer.outer_depth; + outer_T *outer = ectx->ec_outer_ref == NULL ? NULL + : ectx->ec_outer_ref->or_outer; + + while (depth > 1 && outer != NULL) + { + outer = outer->out_up; + --depth; + } + if (outer == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + if (ectx->ec_frame_idx == ectx->ec_initial_frame_idx + || ectx->ec_outer_ref == NULL) + // Possibly :def function called from legacy + // context. + emsg(_(e_closure_called_from_invalid_context)); + else + iemsg("LOADOUTER depth more than scope levels"); + goto theend; + } + if (depth < 0) + // Variable declared in loop. May be copied if the + // loop block has already ended. + tv = ((typval_T *)outer->out_loop[-depth - 1] + .stack->ga_data) + + outer->out_loop[-depth - 1].var_idx + + iptr->isn_arg.outer.outer_idx; + else + // Variable declared in a function. May be copied if + // the function has already returned. + tv = ((typval_T *)outer->out_stack->ga_data) + + outer->out_frame_idx + STACK_FRAME_SIZE + + iptr->isn_arg.outer.outer_idx; + if (iptr->isn_type == ISN_LOADOUTER) + { + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + copy_tv(tv, STACK_TV_BOT(0)); + ++ectx->ec_stack.ga_len; + } + else + { + --ectx->ec_stack.ga_len; + clear_tv(tv); + *tv = *STACK_TV_BOT(0); + } + } + break; + + // unlet item in list or dict variable + case ISN_UNLETINDEX: + if (execute_unletindex(iptr, ectx) == FAIL) + goto on_error; + break; + + // unlet range of items in list variable + case ISN_UNLETRANGE: + if (execute_unletrange(iptr, ectx) == FAIL) + goto on_error; + break; + + // push constant + case ISN_PUSHNR: + case ISN_PUSHBOOL: + case ISN_PUSHSPEC: + case ISN_PUSHF: + case ISN_PUSHS: + case ISN_PUSHBLOB: + case ISN_PUSHFUNC: + case ISN_PUSHCHANNEL: + case ISN_PUSHJOB: + case ISN_PUSHOBJ: + case ISN_PUSHCLASS: + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + tv->v_lock = 0; + ++ectx->ec_stack.ga_len; + switch (iptr->isn_type) + { + case ISN_PUSHNR: + tv->v_type = VAR_NUMBER; + tv->vval.v_number = iptr->isn_arg.number; + break; + case ISN_PUSHBOOL: + tv->v_type = VAR_BOOL; + tv->vval.v_number = iptr->isn_arg.number; + break; + case ISN_PUSHSPEC: + tv->v_type = VAR_SPECIAL; + tv->vval.v_number = iptr->isn_arg.number; + break; + case ISN_PUSHF: + tv->v_type = VAR_FLOAT; + tv->vval.v_float = iptr->isn_arg.fnumber; + break; + case ISN_PUSHBLOB: + blob_copy(iptr->isn_arg.blob, tv); + break; + case ISN_PUSHFUNC: + tv->v_type = VAR_FUNC; + if (iptr->isn_arg.string == NULL) + tv->vval.v_string = NULL; + else + tv->vval.v_string = + vim_strsave(iptr->isn_arg.string); + break; + case ISN_PUSHCHANNEL: +#ifdef FEAT_JOB_CHANNEL + tv->v_type = VAR_CHANNEL; + tv->vval.v_channel = NULL; +#endif + break; + case ISN_PUSHJOB: +#ifdef FEAT_JOB_CHANNEL + tv->v_type = VAR_JOB; + tv->vval.v_job = NULL; +#endif + break; + case ISN_PUSHOBJ: + tv->v_type = VAR_OBJECT; + tv->vval.v_object = NULL; + break; + case ISN_PUSHCLASS: + tv->v_type = VAR_CLASS; + tv->vval.v_class = iptr->isn_arg.classarg; + break; + default: + tv->v_type = VAR_STRING; + tv->vval.v_string = iptr->isn_arg.string == NULL + ? NULL : vim_strsave(iptr->isn_arg.string); + } + break; + + case ISN_AUTOLOAD: + { + char_u *name = iptr->isn_arg.string; + + (void)script_autoload(name, FALSE); + if (find_func(name, TRUE)) + { + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + tv->v_lock = 0; + ++ectx->ec_stack.ga_len; + tv->v_type = VAR_FUNC; + tv->vval.v_string = vim_strsave(name); + } + else + { + int res = load_namespace_var(ectx, ISN_LOADG, iptr); + + if (res == NOTDONE) + goto theend; + if (res == FAIL) + goto on_error; + } + } + break; + + case ISN_UNLET: + if (do_unlet(iptr->isn_arg.unlet.ul_name, + iptr->isn_arg.unlet.ul_forceit) == FAIL) + goto on_error; + break; + case ISN_UNLETENV: + vim_unsetenv_ext(iptr->isn_arg.unlet.ul_name); + break; + + case ISN_LOCKUNLOCK: + { + typval_T *lval_root_save = lval_root; + int res; + + // Stack has the local variable, argument the whole :lock + // or :unlock command, like ISN_EXEC. + --ectx->ec_stack.ga_len; + lval_root = STACK_TV_BOT(0); + res = exec_command(iptr); + clear_tv(lval_root); + lval_root = lval_root_save; + if (res == FAIL) + goto on_error; + } + break; + + case ISN_LOCKCONST: + item_lock(STACK_TV_BOT(-1), 100, TRUE, TRUE); + break; + + // create a list from items on the stack; uses a single allocation + // for the list header and the items + case ISN_NEWLIST: + if (exe_newlist(iptr->isn_arg.number, ectx) == FAIL) + goto theend; + break; + + // create a dict from items on the stack + case ISN_NEWDICT: + { + int res; + + SOURCING_LNUM = iptr->isn_lnum; + res = exe_newdict(iptr->isn_arg.number, ectx); + if (res == FAIL) + goto theend; + if (res == MAYBE) + goto on_error; + } + break; + + case ISN_CONCAT: + if (exe_concat(iptr->isn_arg.number, ectx) == FAIL) + goto theend; + break; + + // create a partial with NULL value + case ISN_NEWPARTIAL: + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + ++ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(-1); + tv->v_type = VAR_PARTIAL; + tv->v_lock = 0; + tv->vval.v_partial = NULL; + break; + + // call a :def function + case ISN_DCALL: + SOURCING_LNUM = iptr->isn_lnum; + if (call_dfunc(iptr->isn_arg.dfunc.cdf_idx, + NULL, + iptr->isn_arg.dfunc.cdf_argcount, + ectx) == FAIL) + goto on_error; + break; + + // call a method on an interface + case ISN_METHODCALL: + { + cmfunc_T *mfunc = iptr->isn_arg.mfunc; + + SOURCING_LNUM = iptr->isn_lnum; + tv = STACK_TV_BOT(-1 - mfunc->cmf_argcount); + if (tv->v_type != VAR_OBJECT) + { + object_required_error(tv); + goto on_error; + } + object_T *obj = tv->vval.v_object; + class_T *cl = obj->obj_class; + + // convert the interface index to the object index + int idx = object_index_from_itf_index(mfunc->cmf_itf, + TRUE, mfunc->cmf_idx, cl); + + if (call_ufunc(cl->class_obj_methods[idx], NULL, + mfunc->cmf_argcount, ectx, NULL, NULL) == FAIL) + goto on_error; + } + break; + + // call a builtin function + case ISN_BCALL: + SOURCING_LNUM = iptr->isn_lnum; + if (call_bfunc(iptr->isn_arg.bfunc.cbf_idx, + iptr->isn_arg.bfunc.cbf_argcount, + ectx) == FAIL) + goto on_error; + break; + + // call a funcref or partial + case ISN_PCALL: + { + cpfunc_T *pfunc = &iptr->isn_arg.pfunc; + int r; + typval_T partial_tv; + + SOURCING_LNUM = iptr->isn_lnum; + if (pfunc->cpf_top) + { + // funcref is above the arguments + tv = STACK_TV_BOT(-pfunc->cpf_argcount - 1); + } + else + { + // Get the funcref from the stack. + --ectx->ec_stack.ga_len; + partial_tv = *STACK_TV_BOT(0); + tv = &partial_tv; + } + r = call_partial(tv, pfunc->cpf_argcount, ectx); + if (tv == &partial_tv) + clear_tv(&partial_tv); + if (r == FAIL) + goto on_error; + } + break; + + case ISN_PCALL_END: + // PCALL finished, arguments have been consumed and replaced by + // the return value. Now clear the funcref from the stack, + // and move the return value in its place. + --ectx->ec_stack.ga_len; + clear_tv(STACK_TV_BOT(-1)); + *STACK_TV_BOT(-1) = *STACK_TV_BOT(0); + break; + + // call a user defined function or funcref/partial + case ISN_UCALL: + { + cufunc_T *cufunc = &iptr->isn_arg.ufunc; + + SOURCING_LNUM = iptr->isn_lnum; + if (call_eval_func(cufunc->cuf_name, cufunc->cuf_argcount, + ectx, iptr) == FAIL) + goto on_error; + } + break; + + // :defer func(arg) + case ISN_DEFER: + case ISN_DEFEROBJ: + if (defer_command(iptr->isn_arg.defer.defer_var_idx, + iptr->isn_type == ISN_DEFEROBJ, + iptr->isn_arg.defer.defer_argcount, ectx) == FAIL) + goto on_error; + break; + + // Return from a :def function call without a value. + // Return from a constructor. + case ISN_RETURN_VOID: + case ISN_RETURN_OBJECT: + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + ++ectx->ec_stack.ga_len; + if (iptr->isn_type == ISN_RETURN_VOID) + { + tv->v_type = VAR_VOID; + tv->vval.v_number = 0; + tv->v_lock = 0; + } + else + { + *tv = *STACK_TV_VAR(0); + ++tv->vval.v_object->obj_refcount; + } + // FALLTHROUGH + + // return from a :def function call with what is on the stack + case ISN_RETURN: + { + garray_T *trystack = &ectx->ec_trystack; + trycmd_T *trycmd = NULL; + + if (trystack->ga_len > 0) + trycmd = ((trycmd_T *)trystack->ga_data) + + trystack->ga_len - 1; + if (trycmd != NULL + && trycmd->tcd_frame_idx == ectx->ec_frame_idx) + { + // jump to ":finally" or ":endtry" + if (trycmd->tcd_finally_idx != 0) + ectx->ec_iidx = trycmd->tcd_finally_idx; + else + ectx->ec_iidx = trycmd->tcd_endtry_idx; + trycmd->tcd_return = TRUE; + } + else + goto func_return; + } + break; + + // push a partial, a reference to a compiled function + case ISN_FUNCREF: + { + partial_T *pt = ALLOC_CLEAR_ONE(partial_T); + ufunc_T *ufunc; + funcref_T *funcref = &iptr->isn_arg.funcref; + funcref_extra_T *extra = funcref->fr_extra; + + if (pt == NULL) + goto theend; + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + { + vim_free(pt); + goto theend; + } + if (extra != NULL && extra->fre_class != NULL) + { + tv = STACK_TV_BOT(-1); + if (tv->v_type != VAR_OBJECT) + { + object_required_error(tv); + vim_free(pt); + goto on_error; + } + object_T *obj = tv->vval.v_object; + class_T *cl = obj->obj_class; + + // convert the interface index to the object index + int idx = object_index_from_itf_index(extra->fre_class, + TRUE, extra->fre_method_idx, cl); + ufunc = cl->class_obj_methods[idx]; + } + else if (extra == NULL || extra->fre_func_name == NULL) + { + dfunc_T *pt_dfunc = ((dfunc_T *)def_functions.ga_data) + + funcref->fr_dfunc_idx; + + ufunc = pt_dfunc->df_ufunc; + } + else + { + ufunc = find_func(extra->fre_func_name, FALSE); + } + if (ufunc == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + iemsg("ufunc unexpectedly NULL for FUNCREF"); + goto theend; + } + if (fill_partial_and_closure(pt, ufunc, + extra == NULL ? NULL : &extra->fre_loopvar_info, + ectx) == FAIL) + goto theend; + tv = STACK_TV_BOT(0); + ++ectx->ec_stack.ga_len; + tv->vval.v_partial = pt; + tv->v_type = VAR_PARTIAL; + tv->v_lock = 0; + } + break; + + // Create a global function from a lambda. + case ISN_NEWFUNC: + { + newfuncarg_T *arg = iptr->isn_arg.newfunc.nf_arg; + + if (copy_lambda_to_global_func(arg->nfa_lambda, + arg->nfa_global, &arg->nfa_loopvar_info, + ectx) == FAIL) + goto theend; + } + break; + + // List functions + case ISN_DEF: + if (iptr->isn_arg.string == NULL) + list_functions(NULL); + else + { + exarg_T ea; + garray_T lines_to_free; + + CLEAR_FIELD(ea); + ea.cmd = ea.arg = iptr->isn_arg.string; + ga_init2(&lines_to_free, sizeof(char_u *), 50); + define_function(&ea, NULL, &lines_to_free, 0); + ga_clear_strings(&lines_to_free); + } + break; + + // jump if a condition is met + case ISN_JUMP: + { + jumpwhen_T when = iptr->isn_arg.jump.jump_when; + int error = FALSE; + int jump = TRUE; + + if (when != JUMP_ALWAYS) + { + tv = STACK_TV_BOT(-1); + if (when == JUMP_IF_COND_FALSE + || when == JUMP_IF_FALSE + || when == JUMP_IF_COND_TRUE) + { + SOURCING_LNUM = iptr->isn_lnum; + jump = tv_get_bool_chk(tv, &error); + if (error) + goto on_error; + } + else + jump = tv2bool(tv); + if (when == JUMP_IF_FALSE || when == JUMP_IF_COND_FALSE) + jump = !jump; + if (when == JUMP_IF_FALSE || !jump) + { + // drop the value from the stack + clear_tv(tv); + --ectx->ec_stack.ga_len; + } + } + if (jump) + ectx->ec_iidx = iptr->isn_arg.jump.jump_where; + } + break; + + // "while": jump to end if a condition is false + case ISN_WHILE: + { + int error = FALSE; + int jump = TRUE; + + tv = STACK_TV_BOT(-1); + SOURCING_LNUM = iptr->isn_lnum; + jump = !tv_get_bool_chk(tv, &error); + if (error) + goto on_error; + // drop the value from the stack + clear_tv(tv); + --ectx->ec_stack.ga_len; + if (jump) + ectx->ec_iidx = iptr->isn_arg.whileloop.while_end; + + // Store the current funcref count, may be used by + // ISN_ENDLOOP later + tv = STACK_TV_VAR( + iptr->isn_arg.whileloop.while_funcref_idx); + tv->vval.v_number = ectx->ec_funcrefs.ga_len; + } + break; + + // Jump if an argument with a default value was already set and not + // v:none. + case ISN_JUMP_IF_ARG_SET: + case ISN_JUMP_IF_ARG_NOT_SET: + tv = STACK_TV_VAR(iptr->isn_arg.jumparg.jump_arg_off); + int arg_set = tv->v_type != VAR_UNKNOWN + && !(tv->v_type == VAR_SPECIAL + && tv->vval.v_number == VVAL_NONE); + if (iptr->isn_type == ISN_JUMP_IF_ARG_SET ? arg_set : !arg_set) + ectx->ec_iidx = iptr->isn_arg.jumparg.jump_where; + break; + + // top of a for loop + case ISN_FOR: + if (execute_for(iptr, ectx) == FAIL) + goto theend; + break; + + // end of a for or while loop + case ISN_ENDLOOP: + if (execute_endloop(iptr, ectx) == FAIL) + goto theend; + break; + + // start of ":try" block + case ISN_TRY: + { + trycmd_T *trycmd = NULL; + + if (GA_GROW_FAILS(&ectx->ec_trystack, 1)) + goto theend; + trycmd = ((trycmd_T *)ectx->ec_trystack.ga_data) + + ectx->ec_trystack.ga_len; + ++ectx->ec_trystack.ga_len; + ++trylevel; + CLEAR_POINTER(trycmd); + trycmd->tcd_frame_idx = ectx->ec_frame_idx; + trycmd->tcd_stack_len = ectx->ec_stack.ga_len; + trycmd->tcd_catch_idx = + iptr->isn_arg.tryref.try_ref->try_catch; + trycmd->tcd_finally_idx = + iptr->isn_arg.tryref.try_ref->try_finally; + trycmd->tcd_endtry_idx = + iptr->isn_arg.tryref.try_ref->try_endtry; + } + break; + + case ISN_PUSHEXC: + if (current_exception == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + iemsg("Evaluating catch while current_exception is NULL"); + goto theend; + } + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + tv = STACK_TV_BOT(0); + ++ectx->ec_stack.ga_len; + tv->v_type = VAR_STRING; + tv->v_lock = 0; + tv->vval.v_string = vim_strsave( + (char_u *)current_exception->value); + break; + + case ISN_CATCH: + { + garray_T *trystack = &ectx->ec_trystack; + trycmd_T *trycmd; + + may_restore_cmdmod(&ectx->ec_funclocal); + trycmd = ((trycmd_T *)trystack->ga_data) + + trystack->ga_len - 1; + trycmd->tcd_caught = TRUE; + trycmd->tcd_did_throw = FALSE; + + did_emsg = got_int = did_throw = FALSE; + force_abort = need_rethrow = FALSE; + catch_exception(current_exception); + } + break; + + case ISN_TRYCONT: + { + garray_T *trystack = &ectx->ec_trystack; + trycont_T *trycont = &iptr->isn_arg.trycont; + int i; + trycmd_T *trycmd; + int iidx = trycont->tct_where; + + if (trystack->ga_len < trycont->tct_levels) + { + siemsg("TRYCONT: expected %d levels, found %d", + trycont->tct_levels, trystack->ga_len); + goto theend; + } + // Make :endtry jump to any outer try block and the last + // :endtry inside the loop to the loop start. + for (i = trycont->tct_levels; i > 0; --i) + { + trycmd = ((trycmd_T *)trystack->ga_data) + + trystack->ga_len - i; + // Add one to tcd_cont to be able to jump to + // instruction with index zero. + trycmd->tcd_cont = iidx + 1; + iidx = trycmd->tcd_finally_idx == 0 + ? trycmd->tcd_endtry_idx : trycmd->tcd_finally_idx; + } + // jump to :finally or :endtry of current try statement + ectx->ec_iidx = iidx; + } + break; + + case ISN_FINALLY: + { + garray_T *trystack = &ectx->ec_trystack; + trycmd_T *trycmd = ((trycmd_T *)trystack->ga_data) + + trystack->ga_len - 1; + + // Reset the index to avoid a return statement jumps here + // again. + trycmd->tcd_finally_idx = 0; + break; + } + + // end of ":try" block + case ISN_ENDTRY: + { + garray_T *trystack = &ectx->ec_trystack; + trycmd_T *trycmd; + + --trystack->ga_len; + --trylevel; + trycmd = ((trycmd_T *)trystack->ga_data) + trystack->ga_len; + if (trycmd->tcd_did_throw) + did_throw = TRUE; + if (trycmd->tcd_caught && current_exception != NULL) + { + // discard the exception + if (caught_stack == current_exception) + caught_stack = caught_stack->caught; + discard_current_exception(); + } + + if (trycmd->tcd_return) + goto func_return; + + while (ectx->ec_stack.ga_len > trycmd->tcd_stack_len) + { + --ectx->ec_stack.ga_len; + clear_tv(STACK_TV_BOT(0)); + } + if (trycmd->tcd_cont != 0) + // handling :continue: jump to outer try block or + // start of the loop + ectx->ec_iidx = trycmd->tcd_cont - 1; + } + break; + + case ISN_THROW: + { + garray_T *trystack = &ectx->ec_trystack; + + if (trystack->ga_len == 0 && trylevel == 0 && emsg_silent) + { + // throwing an exception while using "silent!" causes + // the function to abort but not display an error. + tv = STACK_TV_BOT(-1); + clear_tv(tv); + tv->v_type = VAR_NUMBER; + tv->vval.v_number = 0; + goto done; + } + --ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(0); + if (tv->vval.v_string == NULL + || *skipwhite(tv->vval.v_string) == NUL) + { + vim_free(tv->vval.v_string); + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_throw_with_empty_string)); + goto theend; + } + + // Inside a "catch" we need to first discard the caught + // exception. + if (trystack->ga_len > 0) + { + trycmd_T *trycmd = ((trycmd_T *)trystack->ga_data) + + trystack->ga_len - 1; + if (trycmd->tcd_caught && current_exception != NULL) + { + // discard the exception + if (caught_stack == current_exception) + caught_stack = caught_stack->caught; + discard_current_exception(); + trycmd->tcd_caught = FALSE; + } + } + + SOURCING_LNUM = iptr->isn_lnum; + if (throw_exception(tv->vval.v_string, ET_USER, NULL) + == FAIL) + { + vim_free(tv->vval.v_string); + goto theend; + } + did_throw = TRUE; + } + break; + + // compare with special values + case ISN_COMPAREBOOL: + case ISN_COMPARESPECIAL: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + varnumber_T arg1 = tv1->vval.v_number; + varnumber_T arg2 = tv2->vval.v_number; + int res; + + if (iptr->isn_arg.op.op_type == EXPR_EQUAL) + res = arg1 == arg2; + else + res = arg1 != arg2; + + --ectx->ec_stack.ga_len; + tv1->v_type = VAR_BOOL; + tv1->vval.v_number = res ? VVAL_TRUE : VVAL_FALSE; + } + break; + + case ISN_COMPARENULL: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + int res; + + res = typval_compare_null(tv1, tv2); + if (res == MAYBE) + goto on_error; + if (iptr->isn_arg.op.op_type == EXPR_NEQUAL) + res = !res; + clear_tv(tv1); + clear_tv(tv2); + --ectx->ec_stack.ga_len; + tv1->v_type = VAR_BOOL; + tv1->vval.v_number = res ? VVAL_TRUE : VVAL_FALSE; + } + break; + + // Operation with two number arguments + case ISN_OPNR: + case ISN_COMPARENR: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + varnumber_T arg1 = tv1->vval.v_number; + varnumber_T arg2 = tv2->vval.v_number; + varnumber_T res = 0; + int div_zero = FALSE; + + if (iptr->isn_arg.op.op_type == EXPR_LSHIFT + || iptr->isn_arg.op.op_type == EXPR_RSHIFT) + { + if (arg2 < 0) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_bitshift_ops_must_be_positive)); + goto on_error; + } + } + + switch (iptr->isn_arg.op.op_type) + { + case EXPR_MULT: res = arg1 * arg2; break; + case EXPR_DIV: if (arg2 == 0) + div_zero = TRUE; + else + res = arg1 / arg2; + break; + case EXPR_REM: if (arg2 == 0) + div_zero = TRUE; + else + res = arg1 % arg2; + break; + case EXPR_SUB: res = arg1 - arg2; break; + case EXPR_ADD: res = arg1 + arg2; break; + + case EXPR_EQUAL: res = arg1 == arg2; break; + case EXPR_NEQUAL: res = arg1 != arg2; break; + case EXPR_GREATER: res = arg1 > arg2; break; + case EXPR_GEQUAL: res = arg1 >= arg2; break; + case EXPR_SMALLER: res = arg1 < arg2; break; + case EXPR_SEQUAL: res = arg1 <= arg2; break; + case EXPR_LSHIFT: if (arg2 > MAX_LSHIFT_BITS) + res = 0; + else + res = (uvarnumber_T)arg1 << arg2; + break; + case EXPR_RSHIFT: if (arg2 > MAX_LSHIFT_BITS) + res = 0; + else + res = (uvarnumber_T)arg1 >> arg2; + break; + default: break; + } + + --ectx->ec_stack.ga_len; + if (iptr->isn_type == ISN_COMPARENR) + { + tv1->v_type = VAR_BOOL; + tv1->vval.v_number = res ? VVAL_TRUE : VVAL_FALSE; + } + else + tv1->vval.v_number = res; + if (div_zero) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_divide_by_zero)); + goto on_error; + } + } + break; + + // Computation with two float arguments + case ISN_OPFLOAT: + case ISN_COMPAREFLOAT: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + float_T arg1 = tv1->vval.v_float; + float_T arg2 = tv2->vval.v_float; + float_T res = 0; + int cmp = FALSE; + + switch (iptr->isn_arg.op.op_type) + { + case EXPR_MULT: res = arg1 * arg2; break; + case EXPR_DIV: res = arg1 / arg2; break; + case EXPR_SUB: res = arg1 - arg2; break; + case EXPR_ADD: res = arg1 + arg2; break; + + case EXPR_EQUAL: cmp = arg1 == arg2; break; + case EXPR_NEQUAL: cmp = arg1 != arg2; break; + case EXPR_GREATER: cmp = arg1 > arg2; break; + case EXPR_GEQUAL: cmp = arg1 >= arg2; break; + case EXPR_SMALLER: cmp = arg1 < arg2; break; + case EXPR_SEQUAL: cmp = arg1 <= arg2; break; + default: cmp = 0; break; + } + --ectx->ec_stack.ga_len; + if (iptr->isn_type == ISN_COMPAREFLOAT) + { + tv1->v_type = VAR_BOOL; + tv1->vval.v_number = cmp ? VVAL_TRUE : VVAL_FALSE; + } + else + tv1->vval.v_float = res; + } + break; + + case ISN_COMPARELIST: + case ISN_COMPAREDICT: + case ISN_COMPAREFUNC: + case ISN_COMPARESTRING: + case ISN_COMPAREBLOB: + case ISN_COMPARECLASS: + case ISN_COMPAREOBJECT: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + exprtype_T exprtype = iptr->isn_arg.op.op_type; + int ic = iptr->isn_arg.op.op_ic; + int res = FALSE; + int status = OK; + + SOURCING_LNUM = iptr->isn_lnum; + if (iptr->isn_type == ISN_COMPARELIST) + { + status = typval_compare_list(tv1, tv2, + exprtype, ic, &res); + } + else if (iptr->isn_type == ISN_COMPAREDICT) + { + status = typval_compare_dict(tv1, tv2, + exprtype, ic, &res); + } + else if (iptr->isn_type == ISN_COMPAREFUNC) + { + status = typval_compare_func(tv1, tv2, + exprtype, ic, &res); + } + else if (iptr->isn_type == ISN_COMPARESTRING) + { + status = typval_compare_string(tv1, tv2, + exprtype, ic, &res); + } + else if (iptr->isn_type == ISN_COMPAREBLOB) + { + status = typval_compare_blob(tv1, tv2, exprtype, &res); + } + else if (iptr->isn_type == ISN_COMPARECLASS) + { + status = typval_compare_class(tv1, tv2, + exprtype, FALSE, &res); + } + else // ISN_COMPAREOBJECT + { + status = typval_compare_object(tv1, tv2, + exprtype, FALSE, &res); + } + --ectx->ec_stack.ga_len; + clear_tv(tv1); + clear_tv(tv2); + tv1->v_type = VAR_BOOL; + tv1->vval.v_number = res ? VVAL_TRUE : VVAL_FALSE; + if (status == FAIL) + goto theend; + } + break; + + case ISN_COMPAREANY: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + exprtype_T exprtype = iptr->isn_arg.op.op_type; + int ic = iptr->isn_arg.op.op_ic; + int status; + + SOURCING_LNUM = iptr->isn_lnum; + status = typval_compare(tv1, tv2, exprtype, ic); + clear_tv(tv2); + --ectx->ec_stack.ga_len; + if (status == FAIL) + goto theend; + } + break; + + case ISN_ADDLIST: + case ISN_ADDBLOB: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + + // add two lists or blobs + if (iptr->isn_type == ISN_ADDLIST) + { + if (iptr->isn_arg.op.op_type == EXPR_APPEND + && tv1->vval.v_list != NULL) + list_extend(tv1->vval.v_list, tv2->vval.v_list, + NULL); + else + eval_addlist(tv1, tv2); + } + else + eval_addblob(tv1, tv2); + clear_tv(tv2); + --ectx->ec_stack.ga_len; + } + break; + + case ISN_LISTAPPEND: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + list_T *l = tv1->vval.v_list; + + // add an item to a list + SOURCING_LNUM = iptr->isn_lnum; + if (l == NULL) + { + emsg(_(e_cannot_add_to_null_list)); + goto on_error; + } + if (value_check_lock(l->lv_lock, NULL, FALSE)) + goto on_error; + if (list_append_tv(l, tv2) == FAIL) + goto theend; + clear_tv(tv2); + --ectx->ec_stack.ga_len; + } + break; + + case ISN_BLOBAPPEND: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + blob_T *b = tv1->vval.v_blob; + int error = FALSE; + varnumber_T n; + + // add a number to a blob + if (b == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_cannot_add_to_null_blob)); + goto on_error; + } + n = tv_get_number_chk(tv2, &error); + if (error) + goto on_error; + ga_append(&b->bv_ga, (int)n); + --ectx->ec_stack.ga_len; + } + break; + + // Computation with two arguments of unknown type + case ISN_OPANY: + { + typval_T *tv1 = STACK_TV_BOT(-2); + typval_T *tv2 = STACK_TV_BOT(-1); + varnumber_T n1, n2; + float_T f1 = 0, f2 = 0; + int error = FALSE; + + if (iptr->isn_arg.op.op_type == EXPR_ADD) + { + if (tv1->v_type == VAR_LIST && tv2->v_type == VAR_LIST) + { + eval_addlist(tv1, tv2); + clear_tv(tv2); + --ectx->ec_stack.ga_len; + break; + } + else if (tv1->v_type == VAR_BLOB + && tv2->v_type == VAR_BLOB) + { + eval_addblob(tv1, tv2); + clear_tv(tv2); + --ectx->ec_stack.ga_len; + break; + } + } + if (tv1->v_type == VAR_FLOAT) + { + f1 = tv1->vval.v_float; + n1 = 0; + } + else + { + SOURCING_LNUM = iptr->isn_lnum; + n1 = tv_get_number_chk(tv1, &error); + if (error) + goto on_error; + if (tv2->v_type == VAR_FLOAT) + f1 = n1; + } + if (tv2->v_type == VAR_FLOAT) + { + f2 = tv2->vval.v_float; + n2 = 0; + } + else + { + n2 = tv_get_number_chk(tv2, &error); + if (error) + goto on_error; + if (tv1->v_type == VAR_FLOAT) + f2 = n2; + } + // if there is a float on either side the result is a float + if (tv1->v_type == VAR_FLOAT || tv2->v_type == VAR_FLOAT) + { + switch (iptr->isn_arg.op.op_type) + { + case EXPR_MULT: f1 = f1 * f2; break; + case EXPR_DIV: f1 = f1 / f2; break; + case EXPR_SUB: f1 = f1 - f2; break; + case EXPR_ADD: f1 = f1 + f2; break; + default: SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_cannot_use_percent_with_float)); + goto on_error; + } + clear_tv(tv1); + clear_tv(tv2); + tv1->v_type = VAR_FLOAT; + tv1->vval.v_float = f1; + --ectx->ec_stack.ga_len; + } + else + { + int failed = FALSE; + + switch (iptr->isn_arg.op.op_type) + { + case EXPR_MULT: n1 = n1 * n2; break; + case EXPR_DIV: n1 = num_divide(n1, n2, &failed); + if (failed) + goto on_error; + break; + case EXPR_SUB: n1 = n1 - n2; break; + case EXPR_ADD: n1 = n1 + n2; break; + default: n1 = num_modulus(n1, n2, &failed); + if (failed) + goto on_error; + break; + } + clear_tv(tv1); + clear_tv(tv2); + tv1->v_type = VAR_NUMBER; + tv1->vval.v_number = n1; + --ectx->ec_stack.ga_len; + } + } + break; + + case ISN_STRINDEX: + case ISN_STRSLICE: + { + int is_slice = iptr->isn_type == ISN_STRSLICE; + varnumber_T n1 = 0, n2; + char_u *res; + + // string index: string is at stack-2, index at stack-1 + // string slice: string is at stack-3, first index at + // stack-2, second index at stack-1 + if (is_slice) + { + tv = STACK_TV_BOT(-2); + n1 = tv->vval.v_number; + } + + tv = STACK_TV_BOT(-1); + n2 = tv->vval.v_number; + + ectx->ec_stack.ga_len -= is_slice ? 2 : 1; + tv = STACK_TV_BOT(-1); + if (is_slice) + // Slice: Select the characters from the string + res = string_slice(tv->vval.v_string, n1, n2, FALSE); + else + // Index: The resulting variable is a string of a + // single character (including composing characters). + // If the index is too big or negative the result is + // empty. + res = char_from_string(tv->vval.v_string, n2); + vim_free(tv->vval.v_string); + tv->vval.v_string = res; + } + break; + + case ISN_LISTINDEX: + case ISN_LISTSLICE: + case ISN_BLOBINDEX: + case ISN_BLOBSLICE: + { + int is_slice = iptr->isn_type == ISN_LISTSLICE + || iptr->isn_type == ISN_BLOBSLICE; + int is_blob = iptr->isn_type == ISN_BLOBINDEX + || iptr->isn_type == ISN_BLOBSLICE; + varnumber_T n1, n2; + typval_T *val_tv; + + // list index: list is at stack-2, index at stack-1 + // list slice: list is at stack-3, indexes at stack-2 and + // stack-1 + // Same for blob. + val_tv = is_slice ? STACK_TV_BOT(-3) : STACK_TV_BOT(-2); + + tv = STACK_TV_BOT(-1); + n1 = n2 = tv->vval.v_number; + clear_tv(tv); + + if (is_slice) + { + tv = STACK_TV_BOT(-2); + n1 = tv->vval.v_number; + clear_tv(tv); + } + + ectx->ec_stack.ga_len -= is_slice ? 2 : 1; + tv = STACK_TV_BOT(-1); + SOURCING_LNUM = iptr->isn_lnum; + if (is_blob) + { + if (blob_slice_or_index(val_tv->vval.v_blob, is_slice, + n1, n2, FALSE, tv) == FAIL) + goto on_error; + } + else + { + if (list_slice_or_index(val_tv->vval.v_list, is_slice, + n1, n2, FALSE, tv, TRUE) == FAIL) + goto on_error; + } + } + break; + + case ISN_ANYINDEX: + case ISN_ANYSLICE: + { + int is_slice = iptr->isn_type == ISN_ANYSLICE; + typval_T *var1, *var2; + int res; + + // index: composite is at stack-2, index at stack-1 + // slice: composite is at stack-3, indexes at stack-2 and + // stack-1 + tv = is_slice ? STACK_TV_BOT(-3) : STACK_TV_BOT(-2); + SOURCING_LNUM = iptr->isn_lnum; + if (check_can_index(tv, TRUE, TRUE) == FAIL) + goto on_error; + var1 = is_slice ? STACK_TV_BOT(-2) : STACK_TV_BOT(-1); + var2 = is_slice ? STACK_TV_BOT(-1) : NULL; + res = eval_index_inner(tv, is_slice, var1, var2, + FALSE, NULL, -1, TRUE); + clear_tv(var1); + if (is_slice) + clear_tv(var2); + ectx->ec_stack.ga_len -= is_slice ? 2 : 1; + if (res == FAIL) + goto on_error; + } + break; + + case ISN_SLICE: + { + list_T *list; + int count = iptr->isn_arg.number; + + // type will have been checked to be a list + tv = STACK_TV_BOT(-1); + list = tv->vval.v_list; + + // no error for short list, expect it to be checked earlier + if (list != NULL && list->lv_len >= count) + { + list_T *newlist = list_slice(list, + count, list->lv_len - 1); + + if (newlist != NULL) + { + list_unref(list); + tv->vval.v_list = newlist; + ++newlist->lv_refcount; + } + } + } + break; + + case ISN_GETITEM: + { + listitem_T *li; + getitem_T *gi = &iptr->isn_arg.getitem; + + // Get list item: list is at stack-1, push item. + // List type and length is checked for when compiling. + tv = STACK_TV_BOT(-1 - gi->gi_with_op); + li = list_find(tv->vval.v_list, gi->gi_index); + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + ++ectx->ec_stack.ga_len; + copy_tv(&li->li_tv, STACK_TV_BOT(-1)); + + // Useful when used in unpack assignment. Reset at + // ISN_DROP. + ectx->ec_where.wt_index = gi->gi_index + 1; + ectx->ec_where.wt_variable = TRUE; + } + break; + + case ISN_MEMBER: + { + dict_T *dict; + char_u *key; + dictitem_T *di; + + // dict member: dict is at stack-2, key at stack-1 + tv = STACK_TV_BOT(-2); + // no need to check for VAR_DICT, CHECKTYPE will check. + dict = tv->vval.v_dict; + + tv = STACK_TV_BOT(-1); + // no need to check for VAR_STRING, 2STRING will check. + key = tv->vval.v_string; + if (key == NULL) + key = (char_u *)""; + + if ((di = dict_find(dict, key, -1)) == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_key_not_present_in_dictionary_str), key); + + // If :silent! is used we will continue, make sure the + // stack contents makes sense and the dict stack is + // updated. + clear_tv(tv); + --ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(-1); + (void) dict_stack_save(tv); + tv->v_type = VAR_NUMBER; + tv->vval.v_number = 0; + goto on_fatal_error; + } + clear_tv(tv); + --ectx->ec_stack.ga_len; + // Put the dict used on the dict stack, it might be used by + // a dict function later. + tv = STACK_TV_BOT(-1); + if (dict_stack_save(tv) == FAIL) + goto on_fatal_error; + copy_tv(&di->di_tv, tv); + } + break; + + // dict member with string key + case ISN_STRINGMEMBER: + { + dict_T *dict; + dictitem_T *di; + + tv = STACK_TV_BOT(-1); + if (tv->v_type != VAR_DICT || tv->vval.v_dict == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_dictionary_required)); + goto on_error; + } + dict = tv->vval.v_dict; + + if ((di = dict_find(dict, iptr->isn_arg.string, -1)) + == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_key_not_present_in_dictionary_str), + iptr->isn_arg.string); + goto on_error; + } + // Put the dict used on the dict stack, it might be used by + // a dict function later. + if (dict_stack_save(tv) == FAIL) + goto on_fatal_error; + + copy_tv(&di->di_tv, tv); + } + break; + + case ISN_GET_OBJ_MEMBER: + case ISN_GET_ITF_MEMBER: + { + tv = STACK_TV_BOT(-1); + if (tv->v_type != VAR_OBJECT) + { + SOURCING_LNUM = iptr->isn_lnum; + object_required_error(tv); + goto on_error; + } + + object_T *obj = tv->vval.v_object; + if (obj == NULL) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_using_null_object)); + goto on_error; + } + + int idx; + if (iptr->isn_type == ISN_GET_OBJ_MEMBER) + idx = iptr->isn_arg.number; + else + { + idx = iptr->isn_arg.classmember.cm_idx; + // convert the interface index to the object index + idx = object_index_from_itf_index( + iptr->isn_arg.classmember.cm_class, + FALSE, idx, obj->obj_class); + } + + // the members are located right after the object struct + typval_T *mtv = ((typval_T *)(obj + 1)) + idx; + copy_tv(mtv, tv); + + // Unreference the object after getting the member, it may + // be freed. + object_unref(obj); + } + break; + + case ISN_STORE_THIS: + { + int idx = iptr->isn_arg.number; + object_T *obj = STACK_TV_VAR(0)->vval.v_object; + // the members are located right after the object struct + typval_T *mtv = ((typval_T *)(obj + 1)) + idx; + clear_tv(mtv); + *mtv = *STACK_TV_BOT(-1); + --ectx->ec_stack.ga_len; + } + break; + + case ISN_CLEARDICT: + dict_stack_drop(); + break; + + case ISN_USEDICT: + { + typval_T *dict_tv = dict_stack_get_tv(); + + // Turn "dict.Func" into a partial for "Func" bound to + // "dict". Don't do this when "Func" is already a partial + // that was bound explicitly (pt_auto is FALSE). + tv = STACK_TV_BOT(-1); + if (dict_tv != NULL + && dict_tv->v_type == VAR_DICT + && dict_tv->vval.v_dict != NULL + && (tv->v_type == VAR_FUNC + || (tv->v_type == VAR_PARTIAL + && (tv->vval.v_partial->pt_auto + || tv->vval.v_partial->pt_dict == NULL)))) + dict_tv->vval.v_dict = + make_partial(dict_tv->vval.v_dict, tv); + dict_stack_drop(); + } + break; + + case ISN_NEGATENR: + tv = STACK_TV_BOT(-1); + // CHECKTYPE should have checked the variable type + if (tv->v_type == VAR_FLOAT) + tv->vval.v_float = -tv->vval.v_float; + else + tv->vval.v_number = -tv->vval.v_number; + break; + + case ISN_CHECKTYPE: + { + checktype_T *ct = &iptr->isn_arg.type; + int save_wt_variable = ectx->ec_where.wt_variable; + int r; + + tv = STACK_TV_BOT((int)ct->ct_off); + SOURCING_LNUM = iptr->isn_lnum; + if (!ectx->ec_where.wt_variable) + ectx->ec_where.wt_index = ct->ct_arg_idx; + ectx->ec_where.wt_variable = ct->ct_is_var; + r = check_typval_type(ct->ct_type, tv, ectx->ec_where); + ectx->ec_where.wt_variable = save_wt_variable; + if (r == FAIL) + goto on_error; + if (!ectx->ec_where.wt_variable) + ectx->ec_where.wt_index = 0; + + // number 0 is FALSE, number 1 is TRUE + if (tv->v_type == VAR_NUMBER + && ct->ct_type->tt_type == VAR_BOOL + && (tv->vval.v_number == 0 + || tv->vval.v_number == 1)) + { + tv->v_type = VAR_BOOL; + tv->vval.v_number = tv->vval.v_number + ? VVAL_TRUE : VVAL_FALSE; + } + } + break; + + case ISN_CHECKLEN: + { + int min_len = iptr->isn_arg.checklen.cl_min_len; + list_T *list = NULL; + + tv = STACK_TV_BOT(-1); + if (tv->v_type == VAR_LIST) + list = tv->vval.v_list; + if (list == NULL || list->lv_len < min_len + || (list->lv_len > min_len + && !iptr->isn_arg.checklen.cl_more_OK)) + { + SOURCING_LNUM = iptr->isn_lnum; + semsg(_(e_expected_nr_items_but_got_nr), + min_len, list == NULL ? 0 : list->lv_len); + goto on_error; + } + } + break; + + case ISN_SETTYPE: + set_tv_type(STACK_TV_BOT(-1), iptr->isn_arg.type.ct_type); + break; + + case ISN_2BOOL: + case ISN_COND2BOOL: + { + int n; + int error = FALSE; + + if (iptr->isn_type == ISN_2BOOL) + { + tv = STACK_TV_BOT(iptr->isn_arg.tobool.offset); + n = tv2bool(tv); + if (iptr->isn_arg.tobool.invert) + n = !n; + } + else + { + tv = STACK_TV_BOT(-1); + SOURCING_LNUM = iptr->isn_lnum; + n = tv_get_bool_chk(tv, &error); + if (error) + goto on_error; + } + clear_tv(tv); + tv->v_type = VAR_BOOL; + tv->vval.v_number = n ? VVAL_TRUE : VVAL_FALSE; + } + break; + + case ISN_2STRING: + case ISN_2STRING_ANY: + SOURCING_LNUM = iptr->isn_lnum; + if (do_2string(STACK_TV_BOT(iptr->isn_arg.tostring.offset), + iptr->isn_type == ISN_2STRING_ANY, + iptr->isn_arg.tostring.tolerant) == FAIL) + goto on_error; + break; + + case ISN_RANGE: + { + exarg_T ea; + char *errormsg; + + ea.line2 = 0; + ea.addr_count = 0; + ea.addr_type = ADDR_LINES; + ea.cmd = iptr->isn_arg.string; + ea.skip = FALSE; + if (parse_cmd_address(&ea, &errormsg, FALSE) == FAIL) + goto on_error; + + if (GA_GROW_FAILS(&ectx->ec_stack, 1)) + goto theend; + ++ectx->ec_stack.ga_len; + tv = STACK_TV_BOT(-1); + tv->v_type = VAR_NUMBER; + tv->v_lock = 0; + tv->vval.v_number = ea.line2; + } + break; + + case ISN_PUT: + { + int regname = iptr->isn_arg.put.put_regname; + linenr_T lnum = iptr->isn_arg.put.put_lnum; + char_u *expr = NULL; + int dir = FORWARD; + + if (lnum < -2) + { + // line number was put on the stack by ISN_RANGE + tv = STACK_TV_BOT(-1); + curwin->w_cursor.lnum = tv->vval.v_number; + if (lnum == LNUM_VARIABLE_RANGE_ABOVE) + dir = BACKWARD; + --ectx->ec_stack.ga_len; + } + else if (lnum == -2) + // :put! above cursor + dir = BACKWARD; + else if (lnum >= 0) + { + curwin->w_cursor.lnum = lnum; + if (lnum == 0) + // check_cursor() below will move to line 1 + dir = BACKWARD; + } + + if (regname == '=') + { + tv = STACK_TV_BOT(-1); + if (tv->v_type == VAR_STRING) + expr = tv->vval.v_string; + else + { + expr = typval2string(tv, TRUE); // allocates value + clear_tv(tv); + } + --ectx->ec_stack.ga_len; + } + check_cursor(); + do_put(regname, expr, dir, 1L, PUT_LINE|PUT_CURSLINE); + vim_free(expr); + } + break; + + case ISN_CMDMOD: + ectx->ec_funclocal.floc_save_cmdmod = cmdmod; + ectx->ec_funclocal.floc_restore_cmdmod = TRUE; + ectx->ec_funclocal.floc_restore_cmdmod_stacklen = + ectx->ec_stack.ga_len; + cmdmod = *iptr->isn_arg.cmdmod.cf_cmdmod; + apply_cmdmod(&cmdmod); + break; + + case ISN_CMDMOD_REV: + // filter regprog is owned by the instruction, don't free it + cmdmod.cmod_filter_regmatch.regprog = NULL; + undo_cmdmod(&cmdmod); + cmdmod = ectx->ec_funclocal.floc_save_cmdmod; + ectx->ec_funclocal.floc_restore_cmdmod = FALSE; + break; + + case ISN_UNPACK: + { + int count = iptr->isn_arg.unpack.unp_count; + int semicolon = iptr->isn_arg.unpack.unp_semicolon; + list_T *l; + listitem_T *li; + int i; + + // Check there is a valid list to unpack. + tv = STACK_TV_BOT(-1); + if (tv->v_type != VAR_LIST) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_for_argument_must_be_sequence_of_lists)); + goto on_error; + } + l = tv->vval.v_list; + if (l == NULL + || l->lv_len < (semicolon ? count - 1 : count)) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_list_value_does_not_have_enough_items)); + goto on_error; + } + else if (!semicolon && l->lv_len > count) + { + SOURCING_LNUM = iptr->isn_lnum; + emsg(_(e_list_value_has_more_items_than_targets)); + goto on_error; + } + + CHECK_LIST_MATERIALIZE(l); + if (GA_GROW_FAILS(&ectx->ec_stack, count - 1)) + goto theend; + ectx->ec_stack.ga_len += count - 1; + + // Variable after semicolon gets a list with the remaining + // items. + if (semicolon) + { + list_T *rem_list = + list_alloc_with_items(l->lv_len - count + 1); + + if (rem_list == NULL) + goto theend; + tv = STACK_TV_BOT(-count); + tv->vval.v_list = rem_list; + ++rem_list->lv_refcount; + tv->v_lock = 0; + li = l->lv_first; + for (i = 0; i < count - 1; ++i) + li = li->li_next; + for (i = 0; li != NULL; ++i) + { + typval_T tvcopy; + + copy_tv(&li->li_tv, &tvcopy); + list_set_item(rem_list, i, &tvcopy); + li = li->li_next; + } + --count; + } + + // Produce the values in reverse order, first item last. + li = l->lv_first; + for (i = 0; i < count; ++i) + { + tv = STACK_TV_BOT(-i - 1); + copy_tv(&li->li_tv, tv); + li = li->li_next; + } + + list_unref(l); + } + break; + + case ISN_PROF_START: + case ISN_PROF_END: + { +#ifdef FEAT_PROFILE + funccall_T cookie; + ufunc_T *cur_ufunc = + (((dfunc_T *)def_functions.ga_data) + + ectx->ec_dfunc_idx)->df_ufunc; + + cookie.fc_func = cur_ufunc; + if (iptr->isn_type == ISN_PROF_START) + { + func_line_start(&cookie, iptr->isn_lnum); + // if we get here the instruction is executed + func_line_exec(&cookie); + } + else + func_line_end(&cookie); +#endif + } + break; + + case ISN_DEBUG: + handle_debug(iptr, ectx); + break; + + case ISN_SHUFFLE: + { + typval_T tmp_tv; + int item = iptr->isn_arg.shuffle.shfl_item; + int up = iptr->isn_arg.shuffle.shfl_up; + + tmp_tv = *STACK_TV_BOT(-item); + for ( ; up > 0 && item > 1; --up) + { + *STACK_TV_BOT(-item) = *STACK_TV_BOT(-item + 1); + --item; + } + *STACK_TV_BOT(-item) = tmp_tv; + } + break; + + case ISN_DROP: + --ectx->ec_stack.ga_len; + clear_tv(STACK_TV_BOT(0)); + ectx->ec_where.wt_index = 0; + ectx->ec_where.wt_variable = FALSE; + break; + } + continue; + +func_return: + // Restore previous function. If the frame pointer is where we started + // then there is none and we are done. + if (ectx->ec_frame_idx == ectx->ec_initial_frame_idx) + goto done; + + if (func_return(ectx) == FAIL) + // only fails when out of memory + goto theend; + continue; + +on_error: + // Jump here for an error that does not require aborting execution. + // If "emsg_silent" is set then ignore the error, unless it was set + // when calling the function. + if (did_emsg_cumul + did_emsg == ectx->ec_did_emsg_before + && emsg_silent && did_emsg_def == 0) + { + // If a sequence of instructions causes an error while ":silent!" + // was used, restore the stack length and jump ahead to restoring + // the cmdmod. + if (ectx->ec_funclocal.floc_restore_cmdmod) + { + while (ectx->ec_stack.ga_len + > ectx->ec_funclocal.floc_restore_cmdmod_stacklen) + { + --ectx->ec_stack.ga_len; + clear_tv(STACK_TV_BOT(0)); + } + while (ectx->ec_instr[ectx->ec_iidx].isn_type != ISN_CMDMOD_REV) + ++ectx->ec_iidx; + } + continue; + } +on_fatal_error: + // Jump here for an error that messes up the stack. + // If we are not inside a try-catch started here, abort execution. + if (trylevel <= ectx->ec_trylevel_at_start) + goto theend; + } + +done: + ret = OK; +theend: + may_invoke_defer_funcs(ectx); + + dict_stack_clear(dict_stack_len_at_start); + ectx->ec_trylevel_at_start = save_trylevel_at_start; + return ret; +} + +/* + * Execute the instructions from a VAR_INSTR typval and put the result in + * "rettv". + * Return OK or FAIL. + */ + int +exe_typval_instr(typval_T *tv, typval_T *rettv) +{ + ectx_T *ectx = tv->vval.v_instr->instr_ectx; + isn_T *save_instr = ectx->ec_instr; + int save_iidx = ectx->ec_iidx; + int res; + + // Initialize rettv so that it is safe for caller to invoke clear_tv(rettv) + // even when the compilation fails. + rettv->v_type = VAR_UNKNOWN; + + ectx->ec_instr = tv->vval.v_instr->instr_instr; + res = exec_instructions(ectx); + if (res == OK) + { + *rettv = *STACK_TV_BOT(-1); + --ectx->ec_stack.ga_len; + } + + ectx->ec_instr = save_instr; + ectx->ec_iidx = save_iidx; + + return res; +} + +/* + * Execute the instructions from an ISN_SUBSTITUTE command, which are in + * "substitute_instr". + */ + char_u * +exe_substitute_instr(void) +{ + ectx_T *ectx = substitute_instr->subs_ectx; + isn_T *save_instr = ectx->ec_instr; + int save_iidx = ectx->ec_iidx; + char_u *res; + + ectx->ec_instr = substitute_instr->subs_instr; + if (exec_instructions(ectx) == OK) + { + typval_T *tv = STACK_TV_BOT(-1); + + res = typval2string(tv, TRUE); + --ectx->ec_stack.ga_len; + clear_tv(tv); + } + else + { + substitute_instr->subs_status = FAIL; + res = vim_strsave((char_u *)""); + } + + ectx->ec_instr = save_instr; + ectx->ec_iidx = save_iidx; + + return res; +} + +/* + * Call a "def" function from old Vim script. + * Return OK or FAIL. + */ + int +call_def_function( + ufunc_T *ufunc, + int argc_arg, // nr of arguments + typval_T *argv, // arguments + int flags, // DEF_ flags + partial_T *partial, // optional partial for context + object_T *object, // object, e.g. for this.Func() + funccall_T *funccal, + typval_T *rettv) // return value +{ + ectx_T ectx; // execution context + int argc = argc_arg; + int partial_argc = partial == NULL + || (flags & DEF_USE_PT_ARGV) == 0 + ? 0 : partial->pt_argc; + int total_argc = argc + partial_argc; + typval_T *tv; + int idx; + int ret = FAIL; + int defcount = ufunc->uf_args.ga_len - total_argc; + sctx_T save_current_sctx = current_sctx; + int did_emsg_before = did_emsg_cumul + did_emsg; + int save_suppress_errthrow = suppress_errthrow; + msglist_T **saved_msg_list = NULL; + msglist_T *private_msg_list = NULL; + int save_emsg_silent_def = emsg_silent_def; + int save_did_emsg_def = did_emsg_def; + int orig_funcdepth; + int orig_nesting_level = ex_nesting_level; + +// Get pointer to item in the stack. +#undef STACK_TV +#define STACK_TV(idx) (((typval_T *)ectx.ec_stack.ga_data) + idx) + +// Get pointer to item at the bottom of the stack, -1 is the bottom. +#undef STACK_TV_BOT +#define STACK_TV_BOT(idx) (((typval_T *)ectx.ec_stack.ga_data) + ectx.ec_stack.ga_len + idx) + +// Get pointer to a local variable on the stack. Negative for arguments. +#undef STACK_TV_VAR +#define STACK_TV_VAR(idx) (((typval_T *)ectx.ec_stack.ga_data) + ectx.ec_frame_idx + STACK_FRAME_SIZE + idx) + + if (ufunc->uf_def_status == UF_NOT_COMPILED + || ufunc->uf_def_status == UF_COMPILE_ERROR + || (func_needs_compiling(ufunc, get_compile_type(ufunc)) + && compile_def_function(ufunc, FALSE, + get_compile_type(ufunc), NULL) == FAIL)) + { + if (did_emsg_cumul + did_emsg == did_emsg_before) + semsg(_(e_function_is_not_compiled_str), + printable_func_name(ufunc)); + return FAIL; + } + + { + // Check the function was really compiled. + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ufunc->uf_dfunc_idx; + if (dfunc->df_ufunc == NULL) + { + semsg(_(e_function_was_deleted_str), printable_func_name(ufunc)); + return FAIL; + } + if (INSTRUCTIONS(dfunc) == NULL) + { + iemsg("using call_def_function() on not compiled function"); + return FAIL; + } + } + + // If depth of calling is getting too high, don't execute the function. + orig_funcdepth = funcdepth_get(); + if (funcdepth_increment() == FAIL) + return FAIL; + + CLEAR_FIELD(ectx); + ectx.ec_dfunc_idx = ufunc->uf_dfunc_idx; + ga_init2(&ectx.ec_stack, sizeof(typval_T), 500); + if (GA_GROW_FAILS(&ectx.ec_stack, 20)) + { + funcdepth_decrement(); + return FAIL; + } + ga_init2(&ectx.ec_trystack, sizeof(trycmd_T), 10); + ga_init2(&ectx.ec_funcrefs, sizeof(partial_T *), 10); + ectx.ec_did_emsg_before = did_emsg_before; + ++ex_nesting_level; + + idx = total_argc - ufunc->uf_args.ga_len; + if (idx > 0 && ufunc->uf_va_name == NULL) + { + semsg(NGETTEXT(e_one_argument_too_many, e_nr_arguments_too_many, + idx), idx); + goto failed_early; + } + idx = total_argc - ufunc->uf_args.ga_len + ufunc->uf_def_args.ga_len; + if (idx < 0) + { + semsg(NGETTEXT(e_one_argument_too_few, e_nr_arguments_too_few, + -idx), -idx); + goto failed_early; + } + + // Put values from the partial and arguments on the stack, but no more than + // what the function expects. A lambda can be called with more arguments + // than it uses. + for (idx = 0; idx < total_argc + && (ufunc->uf_va_name != NULL || idx < ufunc->uf_args.ga_len); + ++idx) + { + int argv_idx = idx - partial_argc; + + tv = idx < partial_argc ? partial->pt_argv + idx : argv + argv_idx; + if (idx >= ufunc->uf_args.ga_len - ufunc->uf_def_args.ga_len + && tv->v_type == VAR_SPECIAL + && tv->vval.v_number == VVAL_NONE) + { + // Use the default value. + STACK_TV_BOT(0)->v_type = VAR_UNKNOWN; + } + else + { + int done = FALSE; + if (ufunc->uf_arg_types != NULL && idx < ufunc->uf_args.ga_len) + { + type_T *expected = ufunc->uf_arg_types[idx]; + if (expected->tt_type == VAR_FLOAT && tv->v_type == VAR_NUMBER) + { + // When a float is expected and a number was given, convert + // the value. + STACK_TV_BOT(0)->v_type = VAR_FLOAT; + STACK_TV_BOT(0)->v_lock = 0; + STACK_TV_BOT(0)->vval.v_float = tv->vval.v_number; + done = TRUE; + } + else if (check_typval_arg_type(expected, tv, + NULL, argv_idx + 1) == FAIL) + goto failed_early; + } + if (!done) + copy_tv(tv, STACK_TV_BOT(0)); + } + ++ectx.ec_stack.ga_len; + } + + // Turn varargs into a list. Empty list if no args. + if (ufunc->uf_va_name != NULL) + { + int vararg_count = argc - ufunc->uf_args.ga_len; + + if (vararg_count < 0) + vararg_count = 0; + else + argc -= vararg_count; + if (exe_newlist(vararg_count, &ectx) == FAIL) + goto failed_early; + + // Check the type of the list items. + tv = STACK_TV_BOT(-1); + if (ufunc->uf_va_type != NULL + && ufunc->uf_va_type != &t_list_any + && ufunc->uf_va_type->tt_member != &t_any + && tv->vval.v_list != NULL) + { + type_T *expected = ufunc->uf_va_type->tt_member; + listitem_T *li = tv->vval.v_list->lv_first; + + for (idx = 0; idx < vararg_count; ++idx) + { + if (check_typval_arg_type(expected, &li->li_tv, + NULL, argc + idx + 1) == FAIL) + goto failed_early; + li = li->li_next; + } + } + + if (defcount > 0) + // Move varargs list to below missing default arguments. + *STACK_TV_BOT(defcount - 1) = *STACK_TV_BOT(-1); + --ectx.ec_stack.ga_len; + } + + // Make space for omitted arguments, will store default value below. + // Any varargs list goes after them. + if (defcount > 0) + for (idx = 0; idx < defcount; ++idx) + { + STACK_TV_BOT(0)->v_type = VAR_UNKNOWN; + ++ectx.ec_stack.ga_len; + } + if (ufunc->uf_va_name != NULL) + ++ectx.ec_stack.ga_len; + + // Frame pointer points to just after arguments. + ectx.ec_frame_idx = ectx.ec_stack.ga_len; + ectx.ec_initial_frame_idx = ectx.ec_frame_idx; + + { + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ufunc->uf_dfunc_idx; + ufunc_T *base_ufunc = dfunc->df_ufunc; + + // "uf_partial" is on the ufunc that "df_ufunc" points to, as is done + // by copy_lambda_to_global_func(). + if (partial != NULL || base_ufunc->uf_partial != NULL) + { + ectx.ec_outer_ref = ALLOC_CLEAR_ONE(outer_ref_T); + if (ectx.ec_outer_ref == NULL) + goto failed_early; + if (partial != NULL) + { + outer_T *outer = get_pt_outer(partial); + + if (outer->out_stack == NULL && outer->out_loop_size == 0) + { + // no stack was set + if (current_ectx != NULL) + { + if (current_ectx->ec_outer_ref != NULL + && current_ectx->ec_outer_ref->or_outer != NULL) + ectx.ec_outer_ref->or_outer = + current_ectx->ec_outer_ref->or_outer; + } + // else: should there be an error here? + } + else + { + ectx.ec_outer_ref->or_outer = outer; + ++partial->pt_refcount; + ectx.ec_outer_ref->or_partial = partial; + } + } + else + { + ectx.ec_outer_ref->or_outer = &base_ufunc->uf_partial->pt_outer; + ++base_ufunc->uf_partial->pt_refcount; + ectx.ec_outer_ref->or_partial = base_ufunc->uf_partial; + } + } + } + + // dummy frame entries + for (idx = 0; idx < STACK_FRAME_SIZE; ++idx) + { + STACK_TV(ectx.ec_stack.ga_len)->v_type = VAR_UNKNOWN; + ++ectx.ec_stack.ga_len; + } + + { + // Reserve space for local variables and any closure reference count. + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + + ufunc->uf_dfunc_idx; + + // Initialize variables to zero. That avoids having to generate + // initializing instructions for "var nr: number", "var x: any", etc. + for (idx = 0; idx < dfunc->df_varcount; ++idx) + { + STACK_TV_VAR(idx)->v_type = VAR_NUMBER; + STACK_TV_VAR(idx)->vval.v_number = 0; + } + ectx.ec_stack.ga_len += dfunc->df_varcount; + + if (object != NULL) + { + // the object is always the variable at index zero + tv = STACK_TV_VAR(0); + tv->v_type = VAR_OBJECT; + tv->vval.v_object = object; + } + + if (dfunc->df_has_closure) + { + // Initialize the variable that counts how many closures were + // created. This is used in handle_closure_in_use(). + STACK_TV_VAR(idx)->v_type = VAR_NUMBER; + STACK_TV_VAR(idx)->vval.v_number = 0; + ++ectx.ec_stack.ga_len; + } + + ectx.ec_instr = INSTRUCTIONS(dfunc); + } + + // Store the execution context in funccal, used by invoke_all_defer(). + if (funccal != NULL) + funccal->fc_ectx = &ectx; + + // Following errors are in the function, not the caller. + // Commands behave like vim9script. + estack_push_ufunc(ufunc, 1); + current_sctx = ufunc->uf_script_ctx; + current_sctx.sc_version = SCRIPT_VERSION_VIM9; + + // Use a specific location for storing error messages to be converted to an + // exception. + saved_msg_list = msg_list; + msg_list = &private_msg_list; + + // Do turn errors into exceptions. + suppress_errthrow = FALSE; + + // Do not delete the function while executing it. + ++ufunc->uf_calls; + + // When ":silent!" was used before calling then we still abort the + // function. If ":silent!" is used in the function then we don't. + emsg_silent_def = emsg_silent; + did_emsg_def = 0; + + ectx.ec_where.wt_index = 0; + ectx.ec_where.wt_variable = FALSE; + + /* + * Execute the instructions until done. + */ + ret = exec_instructions(&ectx); + if (ret == OK) + { + // function finished, get result from the stack. + if (ufunc->uf_ret_type == &t_void) + { + rettv->v_type = VAR_VOID; + } + else + { + tv = STACK_TV_BOT(-1); + *rettv = *tv; + tv->v_type = VAR_UNKNOWN; + } + } + + // When failed need to unwind the call stack. + unwind_def_callstack(&ectx); + + // Deal with any remaining closures, they may be in use somewhere. + if (ectx.ec_funcrefs.ga_len > 0) + { + handle_closure_in_use(&ectx, FALSE); + ga_clear(&ectx.ec_funcrefs); + } + + estack_pop(); + current_sctx = save_current_sctx; + + if (--ufunc->uf_calls <= 0 && ufunc->uf_refcount <= 0) + // Function was unreferenced while being used, free it now. + func_clear_free(ufunc, FALSE); + + if (*msg_list != NULL && saved_msg_list != NULL) + { + msglist_T **plist = saved_msg_list; + + // Append entries from the current msg_list (uncaught exceptions) to + // the saved msg_list. + while (*plist != NULL) + plist = &(*plist)->next; + + *plist = *msg_list; + } + msg_list = saved_msg_list; + + if (ectx.ec_funclocal.floc_restore_cmdmod) + { + cmdmod.cmod_filter_regmatch.regprog = NULL; + undo_cmdmod(&cmdmod); + cmdmod = ectx.ec_funclocal.floc_save_cmdmod; + } + emsg_silent_def = save_emsg_silent_def; + did_emsg_def += save_did_emsg_def; + +failed_early: + // Free all arguments and local variables. + for (idx = 0; idx < ectx.ec_stack.ga_len; ++idx) + { + tv = STACK_TV(idx); + if (tv->v_type != VAR_NUMBER && tv->v_type != VAR_UNKNOWN) + clear_tv(tv); + } + ex_nesting_level = orig_nesting_level; + + vim_free(ectx.ec_stack.ga_data); + vim_free(ectx.ec_trystack.ga_data); + if (ectx.ec_outer_ref != NULL) + { + if (ectx.ec_outer_ref->or_outer_allocated) + vim_free(ectx.ec_outer_ref->or_outer); + partial_unref(ectx.ec_outer_ref->or_partial); + vim_free(ectx.ec_outer_ref); + } + + // Not sure if this is necessary. + suppress_errthrow = save_suppress_errthrow; + + if (ret != OK && did_emsg_cumul + did_emsg == did_emsg_before + && !need_rethrow) + semsg(_(e_unknown_error_while_executing_str), + printable_func_name(ufunc)); + funcdepth_restore(orig_funcdepth); + return ret; +} + +/* + * Called when a def function has finished (possibly failed). + * Invoke all the function returns to clean up and invoke deferred functions, + * except the toplevel one. + */ + void +unwind_def_callstack(ectx_T *ectx) +{ + while (ectx->ec_frame_idx != ectx->ec_initial_frame_idx) + func_return(ectx); +} + +/* + * Invoke any deferred functions for the top function in "ectx". + */ + void +may_invoke_defer_funcs(ectx_T *ectx) +{ + dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data) + ectx->ec_dfunc_idx; + + if (dfunc->df_defer_var_idx > 0) + invoke_defer_funcs(ectx); +} + +/* + * Return loopvarinfo in a printable form in allocated memory. + */ + static char_u * +printable_loopvarinfo(loopvarinfo_T *lvi) +{ + garray_T ga; + int depth; + + ga_init2(&ga, 1, 100); + for (depth = 0; depth < lvi->lvi_depth; ++depth) + { + if (ga_grow(&ga, 50) == FAIL) + break; + if (lvi->lvi_loop[depth].var_idx == 0) + STRCPY((char *)ga.ga_data + ga.ga_len, " -"); + else + vim_snprintf((char *)ga.ga_data + ga.ga_len, 50, " $%d-$%d", + lvi->lvi_loop[depth].var_idx, + lvi->lvi_loop[depth].var_idx + + lvi->lvi_loop[depth].var_count - 1); + ga.ga_len = (int)STRLEN(ga.ga_data); + } + return ga.ga_data; +} + +/* + * List instructions "instr" up to "instr_count" or until ISN_FINISH. + * "ufunc" has the source lines, NULL for the instructions of ISN_SUBSTITUTE. + * "pfx" is prefixed to every line. + */ + static void +list_instructions(char *pfx, isn_T *instr, int instr_count, ufunc_T *ufunc) +{ + int line_idx = 0; + int prev_current = 0; + int current; + int def_arg_idx = 0; + + for (current = 0; current < instr_count; ++current) + { + isn_T *iptr = &instr[current]; + char *line; + + if (ufunc != NULL) + { + while (line_idx < iptr->isn_lnum + && line_idx < ufunc->uf_lines.ga_len) + { + if (current > prev_current) + { + msg_puts("\n\n"); + prev_current = current; + } + line = ((char **)ufunc->uf_lines.ga_data)[line_idx++]; + if (line != NULL) + msg(line); + } + if (iptr->isn_type == ISN_JUMP_IF_ARG_SET) + { + int first_def_arg = ufunc->uf_args.ga_len + - ufunc->uf_def_args.ga_len; + + if (def_arg_idx > 0) + msg_puts("\n\n"); + msg_start(); + msg_puts(" "); + msg_puts(((char **)(ufunc->uf_args.ga_data))[ + first_def_arg + def_arg_idx]); + msg_puts(" = "); + msg_puts(((char **)(ufunc->uf_def_args.ga_data))[def_arg_idx++]); + msg_clr_eos(); + msg_end(); + } + } + + switch (iptr->isn_type) + { + case ISN_CONSTRUCT: + smsg("%s%4d NEW %s size %d", pfx, current, + iptr->isn_arg.construct.construct_class->class_name, + (int)iptr->isn_arg.construct.construct_size); + break; + case ISN_EXEC: + smsg("%s%4d EXEC %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_EXEC_SPLIT: + smsg("%s%4d EXEC_SPLIT %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_EXECRANGE: + smsg("%s%4d EXECRANGE %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LEGACY_EVAL: + smsg("%s%4d EVAL legacy %s", pfx, current, + iptr->isn_arg.string); + break; + case ISN_REDIRSTART: + smsg("%s%4d REDIR", pfx, current); + break; + case ISN_REDIREND: + smsg("%s%4d REDIR END%s", pfx, current, + iptr->isn_arg.number ? " append" : ""); + break; + case ISN_CEXPR_AUCMD: +#ifdef FEAT_QUICKFIX + smsg("%s%4d CEXPR pre %s", pfx, current, + cexpr_get_auname(iptr->isn_arg.number)); +#endif + break; + case ISN_CEXPR_CORE: +#ifdef FEAT_QUICKFIX + { + cexprref_T *cer = iptr->isn_arg.cexpr.cexpr_ref; + + smsg("%s%4d CEXPR core %s%s \"%s\"", pfx, current, + cexpr_get_auname(cer->cer_cmdidx), + cer->cer_forceit ? "!" : "", + cer->cer_cmdline); + } +#endif + break; + case ISN_INSTR: + smsg("%s%4d INSTR", pfx, current); + list_instructions(" ", iptr->isn_arg.instr, INT_MAX, NULL); + msg(" -------------"); + break; + case ISN_SOURCE: + { + scriptitem_T *si = SCRIPT_ITEM(iptr->isn_arg.number); + + smsg("%s%4d SOURCE %s", pfx, current, si->sn_name); + } + break; + case ISN_SUBSTITUTE: + { + subs_T *subs = &iptr->isn_arg.subs; + + smsg("%s%4d SUBSTITUTE %s", pfx, current, subs->subs_cmd); + list_instructions(" ", subs->subs_instr, INT_MAX, NULL); + msg(" -------------"); + } + break; + case ISN_EXECCONCAT: + smsg("%s%4d EXECCONCAT %lld", pfx, current, + (varnumber_T)iptr->isn_arg.number); + break; + case ISN_ECHO: + { + echo_T *echo = &iptr->isn_arg.echo; + + smsg("%s%4d %s %d", pfx, current, + echo->echo_with_white ? "ECHO" : "ECHON", + echo->echo_count); + } + break; + case ISN_EXECUTE: + smsg("%s%4d EXECUTE %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_ECHOMSG: + smsg("%s%4d ECHOMSG %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_ECHOWINDOW: + if (iptr->isn_arg.echowin.ewin_time > 0) + smsg("%s%4d ECHOWINDOW %d (%ld sec)", pfx, current, + iptr->isn_arg.echowin.ewin_count, + iptr->isn_arg.echowin.ewin_time); + else + smsg("%s%4d ECHOWINDOW %d", pfx, current, + iptr->isn_arg.echowin.ewin_count); + break; + case ISN_ECHOCONSOLE: + smsg("%s%4d ECHOCONSOLE %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_ECHOERR: + smsg("%s%4d ECHOERR %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_LOAD: + { + if (iptr->isn_arg.number < 0) + smsg("%s%4d LOAD arg[%lld]", pfx, current, + (varnumber_T)(iptr->isn_arg.number + + STACK_FRAME_SIZE)); + else + smsg("%s%4d LOAD $%lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + } + break; + case ISN_LOADOUTER: + { + isn_outer_T *outer = &iptr->isn_arg.outer; + + if (outer->outer_idx < 0) + smsg("%s%4d LOADOUTER level %d arg[%d]", pfx, current, + outer->outer_depth, + outer->outer_idx + STACK_FRAME_SIZE); + else if (outer->outer_depth < 0) + smsg("%s%4d LOADOUTER $%d in loop level %d", + pfx, current, + outer->outer_idx, + -outer->outer_depth); + else + smsg("%s%4d LOADOUTER level %d $%d", pfx, current, + outer->outer_depth, + outer->outer_idx); + } + break; + case ISN_LOADV: + smsg("%s%4d LOADV v:%s", pfx, current, + get_vim_var_name(iptr->isn_arg.number)); + break; + case ISN_LOADSCRIPT: + { + scriptref_T *sref = iptr->isn_arg.script.scriptref; + scriptitem_T *si = SCRIPT_ITEM(sref->sref_sid); + svar_T *sv; + + sv = get_script_svar(sref, -1); + if (sv == NULL) + smsg("%s%4d LOADSCRIPT [deleted] from %s", + pfx, current, si->sn_name); + else + smsg("%s%4d LOADSCRIPT %s-%d from %s", pfx, current, + sv->sv_name, + sref->sref_idx, + si->sn_name); + } + break; + case ISN_LOADS: + case ISN_LOADEXPORT: + { + scriptitem_T *si = SCRIPT_ITEM( + iptr->isn_arg.loadstore.ls_sid); + + smsg("%s%4d %s s:%s from %s", pfx, current, + iptr->isn_type == ISN_LOADS ? "LOADS" + : "LOADEXPORT", + iptr->isn_arg.loadstore.ls_name, si->sn_name); + } + break; + case ISN_LOADAUTO: + smsg("%s%4d LOADAUTO %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADG: + smsg("%s%4d LOADG g:%s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADB: + smsg("%s%4d LOADB b:%s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADW: + smsg("%s%4d LOADW w:%s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADT: + smsg("%s%4d LOADT t:%s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADGDICT: + smsg("%s%4d LOAD g:", pfx, current); + break; + case ISN_LOADBDICT: + smsg("%s%4d LOAD b:", pfx, current); + break; + case ISN_LOADWDICT: + smsg("%s%4d LOAD w:", pfx, current); + break; + case ISN_LOADTDICT: + smsg("%s%4d LOAD t:", pfx, current); + break; + case ISN_LOADOPT: + smsg("%s%4d LOADOPT %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADENV: + smsg("%s%4d LOADENV %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOADREG: + smsg("%s%4d LOADREG @%c", pfx, current, + (int)(iptr->isn_arg.number)); + break; + + case ISN_STORE: + if (iptr->isn_arg.number < 0) + smsg("%s%4d STORE arg[%lld]", pfx, current, + iptr->isn_arg.number + STACK_FRAME_SIZE); + else + smsg("%s%4d STORE $%lld", pfx, current, + iptr->isn_arg.number); + break; + case ISN_STOREOUTER: + { + isn_outer_T *outer = &iptr->isn_arg.outer; + + if (outer->outer_depth == OUTER_LOOP_DEPTH) + smsg("%s%4d STOREOUTER level 1 $%d in loop", + pfx, current, outer->outer_idx); + else + smsg("%s%4d STOREOUTER level %d $%d", pfx, current, + outer->outer_depth, outer->outer_idx); + } + break; + case ISN_STOREV: + smsg("%s%4d STOREV v:%s", pfx, current, + get_vim_var_name(iptr->isn_arg.number)); + break; + case ISN_STOREAUTO: + smsg("%s%4d STOREAUTO %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_STOREG: + smsg("%s%4d STOREG %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_STOREB: + smsg("%s%4d STOREB %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_STOREW: + smsg("%s%4d STOREW %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_STORET: + smsg("%s%4d STORET %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_STORES: + case ISN_STOREEXPORT: + { + scriptitem_T *si = SCRIPT_ITEM( + iptr->isn_arg.loadstore.ls_sid); + + smsg("%s%4d %s %s in %s", pfx, current, + iptr->isn_type == ISN_STORES + ? "STORES" : "STOREEXPORT", + iptr->isn_arg.loadstore.ls_name, si->sn_name); + } + break; + case ISN_STORESCRIPT: + { + scriptref_T *sref = iptr->isn_arg.script.scriptref; + scriptitem_T *si = SCRIPT_ITEM(sref->sref_sid); + svar_T *sv; + + sv = get_script_svar(sref, -1); + if (sv == NULL) + smsg("%s%4d STORESCRIPT [deleted] in %s", + pfx, current, si->sn_name); + else + smsg("%s%4d STORESCRIPT %s-%d in %s", pfx, current, + sv->sv_name, + sref->sref_idx, + si->sn_name); + } + break; + case ISN_STOREOPT: + case ISN_STOREFUNCOPT: + smsg("%s%4d %s &%s", pfx, current, + iptr->isn_type == ISN_STOREOPT ? "STOREOPT" : "STOREFUNCOPT", + iptr->isn_arg.storeopt.so_name); + break; + case ISN_STOREENV: + smsg("%s%4d STOREENV $%s", pfx, current, iptr->isn_arg.string); + break; + case ISN_STOREREG: + smsg("%s%4d STOREREG @%c", pfx, current, + (int)iptr->isn_arg.number); + break; + case ISN_STORENR: + smsg("%s%4d STORE %lld in $%d", pfx, current, + iptr->isn_arg.storenr.stnr_val, + iptr->isn_arg.storenr.stnr_idx); + break; + + case ISN_STOREINDEX: + smsg("%s%4d STOREINDEX %s", pfx, current, + vartype_name(iptr->isn_arg.storeindex.si_vartype)); + break; + + case ISN_STORERANGE: + smsg("%s%4d STORERANGE", pfx, current); + break; + + case ISN_LOAD_CLASSMEMBER: + case ISN_STORE_CLASSMEMBER: + { + class_T *cl = iptr->isn_arg.classmember.cm_class; + int idx = iptr->isn_arg.classmember.cm_idx; + ocmember_T *ocm = &cl->class_class_members[idx]; + smsg("%s%4d %s CLASSMEMBER %s.%s", pfx, current, + iptr->isn_type == ISN_LOAD_CLASSMEMBER + ? "LOAD" : "STORE", + cl->class_name, ocm->ocm_name); + } + break; + + // constants + case ISN_PUSHNR: + smsg("%s%4d PUSHNR %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_PUSHBOOL: + case ISN_PUSHSPEC: + smsg("%s%4d PUSH %s", pfx, current, + get_var_special_name(iptr->isn_arg.number)); + break; + case ISN_PUSHF: + smsg("%s%4d PUSHF %g", pfx, current, iptr->isn_arg.fnumber); + break; + case ISN_PUSHS: + smsg("%s%4d PUSHS \"%s\"", pfx, current, iptr->isn_arg.string); + break; + case ISN_PUSHBLOB: + { + char_u *r; + char_u numbuf[NUMBUFLEN]; + char_u *tofree; + + r = blob2string(iptr->isn_arg.blob, &tofree, numbuf); + smsg("%s%4d PUSHBLOB %s", pfx, current, r); + vim_free(tofree); + } + break; + case ISN_PUSHFUNC: + { + char *name = (char *)iptr->isn_arg.string; + + smsg("%s%4d PUSHFUNC \"%s\"", pfx, current, + name == NULL ? "[none]" : name); + } + break; + case ISN_PUSHCHANNEL: +#ifdef FEAT_JOB_CHANNEL + smsg("%s%4d PUSHCHANNEL 0", pfx, current); +#endif + break; + case ISN_PUSHJOB: +#ifdef FEAT_JOB_CHANNEL + smsg("%s%4d PUSHJOB \"no process\"", pfx, current); +#endif + break; + case ISN_PUSHOBJ: + smsg("%s%4d PUSHOBJ null", pfx, current); + break; + case ISN_PUSHCLASS: + smsg("%s%4d PUSHCLASS %s", pfx, current, + iptr->isn_arg.classarg == NULL ? "null" + : (char *)iptr->isn_arg.classarg->class_name); + break; + case ISN_PUSHEXC: + smsg("%s%4d PUSH v:exception", pfx, current); + break; + case ISN_AUTOLOAD: + smsg("%s%4d AUTOLOAD %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_UNLET: + smsg("%s%4d UNLET%s %s", pfx, current, + iptr->isn_arg.unlet.ul_forceit ? "!" : "", + iptr->isn_arg.unlet.ul_name); + break; + case ISN_UNLETENV: + smsg("%s%4d UNLETENV%s $%s", pfx, current, + iptr->isn_arg.unlet.ul_forceit ? "!" : "", + iptr->isn_arg.unlet.ul_name); + break; + case ISN_UNLETINDEX: + smsg("%s%4d UNLETINDEX", pfx, current); + break; + case ISN_UNLETRANGE: + smsg("%s%4d UNLETRANGE", pfx, current); + break; + case ISN_LOCKUNLOCK: + smsg("%s%4d LOCKUNLOCK %s", pfx, current, iptr->isn_arg.string); + break; + case ISN_LOCKCONST: + smsg("%s%4d LOCKCONST", pfx, current); + break; + case ISN_NEWLIST: + smsg("%s%4d NEWLIST size %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_NEWDICT: + smsg("%s%4d NEWDICT size %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_NEWPARTIAL: + smsg("%s%4d NEWPARTIAL", pfx, current); + break; + + // function call + case ISN_BCALL: + { + cbfunc_T *cbfunc = &iptr->isn_arg.bfunc; + + smsg("%s%4d BCALL %s(argc %d)", pfx, current, + internal_func_name(cbfunc->cbf_idx), + cbfunc->cbf_argcount); + } + break; + case ISN_DCALL: + { + cdfunc_T *cdfunc = &iptr->isn_arg.dfunc; + dfunc_T *df = ((dfunc_T *)def_functions.ga_data) + + cdfunc->cdf_idx; + + smsg("%s%4d DCALL %s(argc %d)", pfx, current, + printable_func_name(df->df_ufunc), + cdfunc->cdf_argcount); + } + break; + case ISN_METHODCALL: + { + cmfunc_T *mfunc = iptr->isn_arg.mfunc; + + smsg("%s%4d METHODCALL %s.%s(argc %d)", pfx, current, + mfunc->cmf_itf->class_name, + mfunc->cmf_itf->class_obj_methods[ + mfunc->cmf_idx]->uf_name, + mfunc->cmf_argcount); + } + break; + case ISN_UCALL: + { + cufunc_T *cufunc = &iptr->isn_arg.ufunc; + + smsg("%s%4d UCALL %s(argc %d)", pfx, current, + cufunc->cuf_name, cufunc->cuf_argcount); + } + break; + case ISN_PCALL: + { + cpfunc_T *cpfunc = &iptr->isn_arg.pfunc; + + smsg("%s%4d PCALL%s (argc %d)", pfx, current, + cpfunc->cpf_top ? " top" : "", cpfunc->cpf_argcount); + } + break; + case ISN_PCALL_END: + smsg("%s%4d PCALL end", pfx, current); + break; + case ISN_DEFER: + case ISN_DEFEROBJ: + smsg("%s%4d %s %d args", pfx, current, + iptr->isn_type == ISN_DEFER ? "DEFER" : "DEFEROBJ", + (int)iptr->isn_arg.defer.defer_argcount); + break; + case ISN_RETURN: + smsg("%s%4d RETURN", pfx, current); + break; + case ISN_RETURN_VOID: + smsg("%s%4d RETURN void", pfx, current); + break; + case ISN_RETURN_OBJECT: + smsg("%s%4d RETURN object", pfx, current); + break; + case ISN_FUNCREF: + { + funcref_T *funcref = &iptr->isn_arg.funcref; + funcref_extra_T *extra = funcref->fr_extra; + char_u *name; + + if (extra == NULL || extra->fre_func_name == NULL) + { + dfunc_T *df = ((dfunc_T *)def_functions.ga_data) + + funcref->fr_dfunc_idx; + name = df->df_ufunc->uf_name; + } + else + name = extra->fre_func_name; + if (extra != NULL && extra->fre_class != NULL) + { + smsg("%s%4d FUNCREF %s.%s", pfx, current, + extra->fre_class->class_name, name); + } + else if (extra == NULL + || extra->fre_loopvar_info.lvi_depth == 0) + { + smsg("%s%4d FUNCREF %s", pfx, current, name); + } + else + { + char_u *info = printable_loopvarinfo( + &extra->fre_loopvar_info); + + smsg("%s%4d FUNCREF %s vars %s", pfx, current, + name, info); + vim_free(info); + } + } + break; + + case ISN_NEWFUNC: + { + newfuncarg_T *arg = iptr->isn_arg.newfunc.nf_arg; + + if (arg->nfa_loopvar_info.lvi_depth == 0) + smsg("%s%4d NEWFUNC %s %s", pfx, current, + arg->nfa_lambda, arg->nfa_global); + else + { + char_u *info = printable_loopvarinfo( + &arg->nfa_loopvar_info); + + smsg("%s%4d NEWFUNC %s %s vars %s", pfx, current, + arg->nfa_lambda, arg->nfa_global, info); + vim_free(info); + } + } + break; + + case ISN_DEF: + { + char_u *name = iptr->isn_arg.string; + + smsg("%s%4d DEF %s", pfx, current, + name == NULL ? (char_u *)"" : name); + } + break; + + case ISN_JUMP: + { + char *when = "?"; + + switch (iptr->isn_arg.jump.jump_when) + { + case JUMP_ALWAYS: + when = "JUMP"; + break; + case JUMP_NEVER: + iemsg("JUMP_NEVER should not be used"); + break; + case JUMP_AND_KEEP_IF_TRUE: + when = "JUMP_AND_KEEP_IF_TRUE"; + break; + case JUMP_IF_FALSE: + when = "JUMP_IF_FALSE"; + break; + case JUMP_WHILE_FALSE: + when = "JUMP_WHILE_FALSE"; // unused + break; + case JUMP_IF_COND_FALSE: + when = "JUMP_IF_COND_FALSE"; + break; + case JUMP_IF_COND_TRUE: + when = "JUMP_IF_COND_TRUE"; + break; + } + smsg("%s%4d %s -> %d", pfx, current, when, + iptr->isn_arg.jump.jump_where); + } + break; + + case ISN_JUMP_IF_ARG_SET: + smsg("%s%4d JUMP_IF_ARG_SET arg[%d] -> %d", pfx, current, + iptr->isn_arg.jumparg.jump_arg_off + STACK_FRAME_SIZE, + iptr->isn_arg.jump.jump_where); + break; + + case ISN_JUMP_IF_ARG_NOT_SET: + smsg("%s%4d JUMP_IF_ARG_NOT_SET arg[%d] -> %d", pfx, current, + iptr->isn_arg.jumparg.jump_arg_off + STACK_FRAME_SIZE, + iptr->isn_arg.jump.jump_where); + break; + + case ISN_FOR: + { + forloop_T *forloop = &iptr->isn_arg.forloop; + + smsg("%s%4d FOR $%d -> %d", pfx, current, + forloop->for_loop_idx, forloop->for_end); + } + break; + + case ISN_ENDLOOP: + { + endloop_T *endloop = &iptr->isn_arg.endloop; + + smsg("%s%4d ENDLOOP ref $%d save $%d-$%d depth %d", + pfx, current, + endloop->end_funcref_idx, + endloop->end_var_idx, + endloop->end_var_idx + endloop->end_var_count - 1, + endloop->end_depth); + } + break; + + case ISN_WHILE: + { + whileloop_T *whileloop = &iptr->isn_arg.whileloop; + + smsg("%s%4d WHILE $%d -> %d", pfx, current, + whileloop->while_funcref_idx, + whileloop->while_end); + } + break; + + case ISN_TRY: + { + try_T *try = &iptr->isn_arg.tryref; + + if (try->try_ref->try_finally == 0) + smsg("%s%4d TRY catch -> %d, endtry -> %d", + pfx, current, + try->try_ref->try_catch, + try->try_ref->try_endtry); + else + smsg("%s%4d TRY catch -> %d, finally -> %d, endtry -> %d", + pfx, current, + try->try_ref->try_catch, + try->try_ref->try_finally, + try->try_ref->try_endtry); + } + break; + case ISN_CATCH: + smsg("%s%4d CATCH", pfx, current); + break; + case ISN_TRYCONT: + { + trycont_T *trycont = &iptr->isn_arg.trycont; + + smsg("%s%4d TRY-CONTINUE %d level%s -> %d", pfx, current, + trycont->tct_levels, + trycont->tct_levels == 1 ? "" : "s", + trycont->tct_where); + } + break; + case ISN_FINALLY: + smsg("%s%4d FINALLY", pfx, current); + break; + case ISN_ENDTRY: + smsg("%s%4d ENDTRY", pfx, current); + break; + case ISN_THROW: + smsg("%s%4d THROW", pfx, current); + break; + + // expression operations on number + case ISN_OPNR: + case ISN_OPFLOAT: + case ISN_OPANY: + { + char *what; + char *ins; + + switch (iptr->isn_arg.op.op_type) + { + case EXPR_MULT: what = "*"; break; + case EXPR_DIV: what = "/"; break; + case EXPR_REM: what = "%"; break; + case EXPR_SUB: what = "-"; break; + case EXPR_ADD: what = "+"; break; + case EXPR_LSHIFT: what = "<<"; break; + case EXPR_RSHIFT: what = ">>"; break; + default: what = "???"; break; + } + switch (iptr->isn_type) + { + case ISN_OPNR: ins = "OPNR"; break; + case ISN_OPFLOAT: ins = "OPFLOAT"; break; + case ISN_OPANY: ins = "OPANY"; break; + default: ins = "???"; break; + } + smsg("%s%4d %s %s", pfx, current, ins, what); + } + break; + + case ISN_COMPAREBOOL: + case ISN_COMPARESPECIAL: + case ISN_COMPARENULL: + case ISN_COMPARENR: + case ISN_COMPAREFLOAT: + case ISN_COMPARESTRING: + case ISN_COMPAREBLOB: + case ISN_COMPARELIST: + case ISN_COMPAREDICT: + case ISN_COMPAREFUNC: + case ISN_COMPARECLASS: + case ISN_COMPAREOBJECT: + case ISN_COMPAREANY: + { + char *p; + char buf[10]; + char *type; + + switch (iptr->isn_arg.op.op_type) + { + case EXPR_EQUAL: p = "=="; break; + case EXPR_NEQUAL: p = "!="; break; + case EXPR_GREATER: p = ">"; break; + case EXPR_GEQUAL: p = ">="; break; + case EXPR_SMALLER: p = "<"; break; + case EXPR_SEQUAL: p = "<="; break; + case EXPR_MATCH: p = "=~"; break; + case EXPR_IS: p = "is"; break; + case EXPR_ISNOT: p = "isnot"; break; + case EXPR_NOMATCH: p = "!~"; break; + default: p = "???"; break; + } + STRCPY(buf, p); + if (iptr->isn_arg.op.op_ic == TRUE) + strcat(buf, "?"); + switch(iptr->isn_type) + { + case ISN_COMPAREBOOL: type = "COMPAREBOOL"; break; + case ISN_COMPARESPECIAL: + type = "COMPARESPECIAL"; break; + case ISN_COMPARENULL: type = "COMPARENULL"; break; + case ISN_COMPARENR: type = "COMPARENR"; break; + case ISN_COMPAREFLOAT: type = "COMPAREFLOAT"; break; + case ISN_COMPARESTRING: + type = "COMPARESTRING"; break; + case ISN_COMPAREBLOB: type = "COMPAREBLOB"; break; + case ISN_COMPARELIST: type = "COMPARELIST"; break; + case ISN_COMPAREDICT: type = "COMPAREDICT"; break; + case ISN_COMPAREFUNC: type = "COMPAREFUNC"; break; + case ISN_COMPARECLASS: type = "COMPARECLASS"; break; + case ISN_COMPAREOBJECT: + type = "COMPAREOBJECT"; break; + case ISN_COMPAREANY: type = "COMPAREANY"; break; + default: type = "???"; break; + } + + smsg("%s%4d %s %s", pfx, current, type, buf); + } + break; + + case ISN_ADDLIST: smsg("%s%4d ADDLIST", pfx, current); break; + case ISN_ADDBLOB: smsg("%s%4d ADDBLOB", pfx, current); break; + + // expression operations + case ISN_CONCAT: + smsg("%s%4d CONCAT size %lld", pfx, current, + (varnumber_T)(iptr->isn_arg.number)); + break; + case ISN_STRINDEX: smsg("%s%4d STRINDEX", pfx, current); break; + case ISN_STRSLICE: smsg("%s%4d STRSLICE", pfx, current); break; + case ISN_BLOBINDEX: smsg("%s%4d BLOBINDEX", pfx, current); break; + case ISN_BLOBSLICE: smsg("%s%4d BLOBSLICE", pfx, current); break; + case ISN_LISTAPPEND: smsg("%s%4d LISTAPPEND", pfx, current); break; + case ISN_BLOBAPPEND: smsg("%s%4d BLOBAPPEND", pfx, current); break; + case ISN_LISTINDEX: smsg("%s%4d LISTINDEX", pfx, current); break; + case ISN_LISTSLICE: smsg("%s%4d LISTSLICE", pfx, current); break; + case ISN_ANYINDEX: smsg("%s%4d ANYINDEX", pfx, current); break; + case ISN_ANYSLICE: smsg("%s%4d ANYSLICE", pfx, current); break; + case ISN_SLICE: smsg("%s%4d SLICE %lld", + pfx, current, iptr->isn_arg.number); break; + case ISN_GETITEM: smsg("%s%4d ITEM %lld%s", pfx, current, + iptr->isn_arg.getitem.gi_index, + iptr->isn_arg.getitem.gi_with_op ? + " with op" : ""); break; + case ISN_MEMBER: smsg("%s%4d MEMBER", pfx, current); break; + case ISN_STRINGMEMBER: smsg("%s%4d MEMBER %s", pfx, current, + iptr->isn_arg.string); break; + case ISN_GET_OBJ_MEMBER: smsg("%s%4d OBJ_MEMBER %d", pfx, current, + (int)iptr->isn_arg.number); break; + case ISN_GET_ITF_MEMBER: smsg("%s%4d ITF_MEMBER %d on %s", + pfx, current, + (int)iptr->isn_arg.classmember.cm_idx, + iptr->isn_arg.classmember.cm_class->class_name); + break; + case ISN_STORE_THIS: smsg("%s%4d STORE_THIS %d", pfx, current, + (int)iptr->isn_arg.number); break; + case ISN_CLEARDICT: smsg("%s%4d CLEARDICT", pfx, current); break; + case ISN_USEDICT: smsg("%s%4d USEDICT", pfx, current); break; + + case ISN_NEGATENR: smsg("%s%4d NEGATENR", pfx, current); break; + + case ISN_CHECKTYPE: + { + checktype_T *ct = &iptr->isn_arg.type; + char *tofree = NULL; + char *typename; + + if (ct->ct_type->tt_type == VAR_FLOAT + && (ct->ct_type->tt_flags & TTFLAG_NUMBER_OK)) + typename = "float|number"; + else + typename = type_name(ct->ct_type, &tofree); + + if (ct->ct_arg_idx == 0) + smsg("%s%4d CHECKTYPE %s stack[%d]", pfx, current, + typename, + (int)ct->ct_off); + else + smsg("%s%4d CHECKTYPE %s stack[%d] %s %d", + pfx, current, + typename, + (int)ct->ct_off, + ct->ct_is_var ? "var": "arg", + (int)ct->ct_arg_idx); + vim_free(tofree); + break; + } + case ISN_CHECKLEN: smsg("%s%4d CHECKLEN %s%d", pfx, current, + iptr->isn_arg.checklen.cl_more_OK ? ">= " : "", + iptr->isn_arg.checklen.cl_min_len); + break; + case ISN_SETTYPE: + { + char *tofree; + + smsg("%s%4d SETTYPE %s", pfx, current, + type_name(iptr->isn_arg.type.ct_type, &tofree)); + vim_free(tofree); + break; + } + case ISN_COND2BOOL: smsg("%s%4d COND2BOOL", pfx, current); break; + case ISN_2BOOL: if (iptr->isn_arg.tobool.invert) + smsg("%s%4d INVERT %d (!val)", pfx, current, + iptr->isn_arg.tobool.offset); + else + smsg("%s%4d 2BOOL %d (!!val)", pfx, current, + iptr->isn_arg.tobool.offset); + break; + case ISN_2STRING: smsg("%s%4d 2STRING stack[%lld]", pfx, current, + (varnumber_T)(iptr->isn_arg.tostring.offset)); + break; + case ISN_2STRING_ANY: smsg("%s%4d 2STRING_ANY stack[%lld]", + pfx, current, + (varnumber_T)(iptr->isn_arg.tostring.offset)); + break; + case ISN_RANGE: smsg("%s%4d RANGE %s", pfx, current, + iptr->isn_arg.string); + break; + case ISN_PUT: + if (iptr->isn_arg.put.put_lnum == LNUM_VARIABLE_RANGE_ABOVE) + smsg("%s%4d PUT %c above range", + pfx, current, iptr->isn_arg.put.put_regname); + else if (iptr->isn_arg.put.put_lnum == LNUM_VARIABLE_RANGE) + smsg("%s%4d PUT %c range", + pfx, current, iptr->isn_arg.put.put_regname); + else + smsg("%s%4d PUT %c %ld", pfx, current, + iptr->isn_arg.put.put_regname, + (long)iptr->isn_arg.put.put_lnum); + break; + + case ISN_CMDMOD: + { + char_u *buf; + size_t len = produce_cmdmods( + NULL, iptr->isn_arg.cmdmod.cf_cmdmod, FALSE); + + buf = alloc(len + 1); + if (likely(buf != NULL)) + { + (void)produce_cmdmods( + buf, iptr->isn_arg.cmdmod.cf_cmdmod, FALSE); + smsg("%s%4d CMDMOD %s", pfx, current, buf); + vim_free(buf); + } + break; + } + case ISN_CMDMOD_REV: smsg("%s%4d CMDMOD_REV", pfx, current); break; + + case ISN_PROF_START: + smsg("%s%4d PROFILE START line %d", pfx, current, + iptr->isn_lnum); + break; + + case ISN_PROF_END: + smsg("%s%4d PROFILE END", pfx, current); + break; + + case ISN_DEBUG: + smsg("%s%4d DEBUG line %d-%d varcount %lld", pfx, current, + iptr->isn_arg.debug.dbg_break_lnum + 1, + iptr->isn_lnum, + iptr->isn_arg.debug.dbg_var_names_len); + break; + + case ISN_UNPACK: smsg("%s%4d UNPACK %d%s", pfx, current, + iptr->isn_arg.unpack.unp_count, + iptr->isn_arg.unpack.unp_semicolon ? " semicolon" : ""); + break; + case ISN_SHUFFLE: smsg("%s%4d SHUFFLE %d up %d", pfx, current, + iptr->isn_arg.shuffle.shfl_item, + iptr->isn_arg.shuffle.shfl_up); + break; + case ISN_DROP: smsg("%s%4d DROP", pfx, current); break; + + case ISN_FINISH: // End of list of instructions for ISN_SUBSTITUTE. + return; + } + + out_flush(); // output one line at a time + ui_breakcheck(); + if (got_int) + break; + } +} + +/* + * Handle command line completion for the :disassemble command. + */ + void +set_context_in_disassemble_cmd(expand_T *xp, char_u *arg) +{ + char_u *p; + + // Default: expand user functions, "debug" and "profile" + xp->xp_context = EXPAND_DISASSEMBLE; + xp->xp_pattern = arg; + + // first argument already typed: only user function names + if (*arg != NUL && *(p = skiptowhite(arg)) != NUL) + { + xp->xp_context = EXPAND_USER_FUNC; + xp->xp_pattern = skipwhite(p); + } +} + +/* + * Function given to ExpandGeneric() to obtain the list of :disassemble + * arguments. + */ + char_u * +get_disassemble_argument(expand_T *xp, int idx) +{ + if (idx == 0) + return (char_u *)"debug"; + if (idx == 1) + return (char_u *)"profile"; + return get_user_func_name(xp, idx - 2); +} + +/* + * ":disassemble". + * We don't really need this at runtime, but we do have tests that require it, + * so always include this. + */ + void +ex_disassemble(exarg_T *eap) +{ + char_u *arg = eap->arg; + ufunc_T *ufunc; + dfunc_T *dfunc; + isn_T *instr = NULL; // init to shut up gcc warning + int instr_count = 0; // init to shut up gcc warning + compiletype_T compile_type = CT_NONE; + + ufunc = find_func_by_name(arg, &compile_type); + if (ufunc == NULL) + return; + if (func_needs_compiling(ufunc, compile_type) + && compile_def_function(ufunc, FALSE, compile_type, NULL) == FAIL) + return; + if (ufunc->uf_def_status != UF_COMPILED) + { + semsg(_(e_function_is_not_compiled_str), eap->arg); + return; + } + msg((char *)printable_func_name(ufunc)); + + dfunc = ((dfunc_T *)def_functions.ga_data) + ufunc->uf_dfunc_idx; + switch (compile_type) + { + case CT_PROFILE: +#ifdef FEAT_PROFILE + instr = dfunc->df_instr_prof; + instr_count = dfunc->df_instr_prof_count; + break; +#endif + // FALLTHROUGH + case CT_NONE: + instr = dfunc->df_instr; + instr_count = dfunc->df_instr_count; + break; + case CT_DEBUG: + instr = dfunc->df_instr_debug; + instr_count = dfunc->df_instr_debug_count; + break; + } + + list_instructions("", instr, instr_count, ufunc); +} + +/* + * Return TRUE when "tv" is not falsy: non-zero, non-empty string, non-empty + * list, etc. Mostly like what JavaScript does, except that empty list and + * empty dictionary are FALSE. + */ + int +tv2bool(typval_T *tv) +{ + switch (tv->v_type) + { + case VAR_NUMBER: + return tv->vval.v_number != 0; + case VAR_FLOAT: + return tv->vval.v_float != 0.0; + case VAR_PARTIAL: + return tv->vval.v_partial != NULL; + case VAR_FUNC: + case VAR_STRING: + return tv->vval.v_string != NULL && *tv->vval.v_string != NUL; + case VAR_LIST: + return tv->vval.v_list != NULL && tv->vval.v_list->lv_len > 0; + case VAR_DICT: + return tv->vval.v_dict != NULL + && tv->vval.v_dict->dv_hashtab.ht_used > 0; + case VAR_BOOL: + case VAR_SPECIAL: + return tv->vval.v_number == VVAL_TRUE ? TRUE : FALSE; + case VAR_JOB: +#ifdef FEAT_JOB_CHANNEL + return tv->vval.v_job != NULL; +#else + break; +#endif + case VAR_CHANNEL: +#ifdef FEAT_JOB_CHANNEL + return tv->vval.v_channel != NULL; +#else + break; +#endif + case VAR_BLOB: + return tv->vval.v_blob != NULL && tv->vval.v_blob->bv_ga.ga_len > 0; + case VAR_UNKNOWN: + case VAR_ANY: + case VAR_VOID: + case VAR_INSTR: + case VAR_CLASS: + case VAR_OBJECT: + break; + } + return FALSE; +} + + void +emsg_using_string_as(typval_T *tv, int as_number) +{ + semsg(_(as_number ? e_using_string_as_number_str + : e_using_string_as_bool_str), + tv->vval.v_string == NULL + ? (char_u *)"" : tv->vval.v_string); +} + +/* + * If "tv" is a string give an error and return FAIL. + */ + int +check_not_string(typval_T *tv) +{ + if (tv->v_type == VAR_STRING) + { + emsg_using_string_as(tv, TRUE); + clear_tv(tv); + return FAIL; + } + return OK; +} + + +#endif // FEAT_EVAL |