diff options
Diffstat (limited to 'debian/vendor-h2o/deps/mruby/mrbgems/mruby-compiler/core/parse.y')
| -rw-r--r-- | debian/vendor-h2o/deps/mruby/mrbgems/mruby-compiler/core/parse.y | 6652 |
1 files changed, 0 insertions, 6652 deletions
diff --git a/debian/vendor-h2o/deps/mruby/mrbgems/mruby-compiler/core/parse.y b/debian/vendor-h2o/deps/mruby/mrbgems/mruby-compiler/core/parse.y deleted file mode 100644 index 0e425b1..0000000 --- a/debian/vendor-h2o/deps/mruby/mrbgems/mruby-compiler/core/parse.y +++ /dev/null @@ -1,6652 +0,0 @@ -/* -** parse.y - mruby parser -** -** See Copyright Notice in mruby.h -*/ - -%{ -#undef PARSER_DEBUG -#ifdef PARSER_DEBUG -# define YYDEBUG 1 -#endif -#define YYERROR_VERBOSE 1 -/* - * Force yacc to use our memory management. This is a little evil because - * the macros assume that "parser_state *p" is in scope - */ -#define YYMALLOC(n) mrb_malloc(p->mrb, (n)) -#define YYFREE(o) mrb_free(p->mrb, (o)) -#define YYSTACK_USE_ALLOCA 0 - -#include <ctype.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <mruby.h> -#include <mruby/compile.h> -#include <mruby/proc.h> -#include <mruby/error.h> -#include <mruby/throw.h> -#include "node.h" - -#define YYLEX_PARAM p - -typedef mrb_ast_node node; -typedef struct mrb_parser_state parser_state; -typedef struct mrb_parser_heredoc_info parser_heredoc_info; - -static int yyparse(parser_state *p); -static int yylex(void *lval, parser_state *p); -static void yyerror(parser_state *p, const char *s); -static void yywarn(parser_state *p, const char *s); -static void yywarning(parser_state *p, const char *s); -static void backref_error(parser_state *p, node *n); -static void void_expr_error(parser_state *p, node *n); -static void tokadd(parser_state *p, int32_t c); - -#define identchar(c) (ISALNUM(c) || (c) == '_' || !ISASCII(c)) - -typedef unsigned int stack_type; - -#define BITSTACK_PUSH(stack, n) ((stack) = ((stack)<<1)|((n)&1)) -#define BITSTACK_POP(stack) ((stack) = (stack) >> 1) -#define BITSTACK_LEXPOP(stack) ((stack) = ((stack) >> 1) | ((stack) & 1)) -#define BITSTACK_SET_P(stack) ((stack)&1) - -#define COND_PUSH(n) BITSTACK_PUSH(p->cond_stack, (n)) -#define COND_POP() BITSTACK_POP(p->cond_stack) -#define COND_LEXPOP() BITSTACK_LEXPOP(p->cond_stack) -#define COND_P() BITSTACK_SET_P(p->cond_stack) - -#define CMDARG_PUSH(n) BITSTACK_PUSH(p->cmdarg_stack, (n)) -#define CMDARG_POP() BITSTACK_POP(p->cmdarg_stack) -#define CMDARG_LEXPOP() BITSTACK_LEXPOP(p->cmdarg_stack) -#define CMDARG_P() BITSTACK_SET_P(p->cmdarg_stack) - -#define SET_LINENO(c,n) ((c)->lineno = (n)) -#define NODE_LINENO(c,n) do {\ - if (n) {\ - (c)->filename_index = (n)->filename_index;\ - (c)->lineno = (n)->lineno;\ - }\ -} while (0) - -#define sym(x) ((mrb_sym)(intptr_t)(x)) -#define nsym(x) ((node*)(intptr_t)(x)) -#define nint(x) ((node*)(intptr_t)(x)) -#define intn(x) ((int)(intptr_t)(x)) - -static inline mrb_sym -intern_cstr_gen(parser_state *p, const char *s) -{ - return mrb_intern_cstr(p->mrb, s); -} -#define intern_cstr(s) intern_cstr_gen(p,(s)) - -static inline mrb_sym -intern_gen(parser_state *p, const char *s, size_t len) -{ - return mrb_intern(p->mrb, s, len); -} -#define intern(s,len) intern_gen(p,(s),(len)) - -static inline mrb_sym -intern_gen_c(parser_state *p, const char c) -{ - return mrb_intern(p->mrb, &c, 1); -} -#define intern_c(c) intern_gen_c(p,(c)) - -static void -cons_free_gen(parser_state *p, node *cons) -{ - cons->cdr = p->cells; - p->cells = cons; -} -#define cons_free(c) cons_free_gen(p, (c)) - -static void* -parser_palloc(parser_state *p, size_t size) -{ - void *m = mrb_pool_alloc(p->pool, size); - - if (!m) { - MRB_THROW(p->jmp); - } - return m; -} - -static node* -cons_gen(parser_state *p, node *car, node *cdr) -{ - node *c; - - if (p->cells) { - c = p->cells; - p->cells = p->cells->cdr; - } - else { - c = (node *)parser_palloc(p, sizeof(mrb_ast_node)); - } - - c->car = car; - c->cdr = cdr; - c->lineno = p->lineno; - c->filename_index = p->current_filename_index; - return c; -} -#define cons(a,b) cons_gen(p,(a),(b)) - -static node* -list1_gen(parser_state *p, node *a) -{ - return cons(a, 0); -} -#define list1(a) list1_gen(p, (a)) - -static node* -list2_gen(parser_state *p, node *a, node *b) -{ - return cons(a, cons(b,0)); -} -#define list2(a,b) list2_gen(p, (a),(b)) - -static node* -list3_gen(parser_state *p, node *a, node *b, node *c) -{ - return cons(a, cons(b, cons(c,0))); -} -#define list3(a,b,c) list3_gen(p, (a),(b),(c)) - -static node* -list4_gen(parser_state *p, node *a, node *b, node *c, node *d) -{ - return cons(a, cons(b, cons(c, cons(d, 0)))); -} -#define list4(a,b,c,d) list4_gen(p, (a),(b),(c),(d)) - -static node* -list5_gen(parser_state *p, node *a, node *b, node *c, node *d, node *e) -{ - return cons(a, cons(b, cons(c, cons(d, cons(e, 0))))); -} -#define list5(a,b,c,d,e) list5_gen(p, (a),(b),(c),(d),(e)) - -static node* -list6_gen(parser_state *p, node *a, node *b, node *c, node *d, node *e, node *f) -{ - return cons(a, cons(b, cons(c, cons(d, cons(e, cons(f, 0)))))); -} -#define list6(a,b,c,d,e,f) list6_gen(p, (a),(b),(c),(d),(e),(f)) - -static node* -append_gen(parser_state *p, node *a, node *b) -{ - node *c = a; - - if (!a) return b; - while (c->cdr) { - c = c->cdr; - } - if (b) { - c->cdr = b; - } - return a; -} -#define append(a,b) append_gen(p,(a),(b)) -#define push(a,b) append_gen(p,(a),list1(b)) - -static char* -parser_strndup(parser_state *p, const char *s, size_t len) -{ - char *b = (char *)parser_palloc(p, len+1); - - memcpy(b, s, len); - b[len] = '\0'; - return b; -} -#undef strndup -#define strndup(s,len) parser_strndup(p, s, len) - -static char* -parser_strdup(parser_state *p, const char *s) -{ - return parser_strndup(p, s, strlen(s)); -} -#undef strdup -#define strdup(s) parser_strdup(p, s) - -/* xxx ----------------------------- */ - -static node* -local_switch(parser_state *p) -{ - node *prev = p->locals; - - p->locals = cons(0, 0); - return prev; -} - -static void -local_resume(parser_state *p, node *prev) -{ - p->locals = prev; -} - -static void -local_nest(parser_state *p) -{ - p->locals = cons(0, p->locals); -} - -static void -local_unnest(parser_state *p) -{ - if (p->locals) { - p->locals = p->locals->cdr; - } -} - -static mrb_bool -local_var_p(parser_state *p, mrb_sym sym) -{ - node *l = p->locals; - - while (l) { - node *n = l->car; - while (n) { - if (sym(n->car) == sym) return TRUE; - n = n->cdr; - } - l = l->cdr; - } - return FALSE; -} - -static void -local_add_f(parser_state *p, mrb_sym sym) -{ - if (p->locals) { - p->locals->car = push(p->locals->car, nsym(sym)); - } -} - -static void -local_add(parser_state *p, mrb_sym sym) -{ - if (!local_var_p(p, sym)) { - local_add_f(p, sym); - } -} - -static node* -locals_node(parser_state *p) -{ - return p->locals ? p->locals->car : NULL; -} - -/* (:scope (vars..) (prog...)) */ -static node* -new_scope(parser_state *p, node *body) -{ - return cons((node*)NODE_SCOPE, cons(locals_node(p), body)); -} - -/* (:begin prog...) */ -static node* -new_begin(parser_state *p, node *body) -{ - if (body) { - return list2((node*)NODE_BEGIN, body); - } - return cons((node*)NODE_BEGIN, 0); -} - -#define newline_node(n) (n) - -/* (:rescue body rescue else) */ -static node* -new_rescue(parser_state *p, node *body, node *resq, node *els) -{ - return list4((node*)NODE_RESCUE, body, resq, els); -} - -static node* -new_mod_rescue(parser_state *p, node *body, node *resq) -{ - return new_rescue(p, body, list1(list3(0, 0, resq)), 0); -} - -/* (:ensure body ensure) */ -static node* -new_ensure(parser_state *p, node *a, node *b) -{ - return cons((node*)NODE_ENSURE, cons(a, cons(0, b))); -} - -/* (:nil) */ -static node* -new_nil(parser_state *p) -{ - return list1((node*)NODE_NIL); -} - -/* (:true) */ -static node* -new_true(parser_state *p) -{ - return list1((node*)NODE_TRUE); -} - -/* (:false) */ -static node* -new_false(parser_state *p) -{ - return list1((node*)NODE_FALSE); -} - -/* (:alias new old) */ -static node* -new_alias(parser_state *p, mrb_sym a, mrb_sym b) -{ - return cons((node*)NODE_ALIAS, cons(nsym(a), nsym(b))); -} - -/* (:if cond then else) */ -static node* -new_if(parser_state *p, node *a, node *b, node *c) -{ - void_expr_error(p, a); - return list4((node*)NODE_IF, a, b, c); -} - -/* (:unless cond then else) */ -static node* -new_unless(parser_state *p, node *a, node *b, node *c) -{ - void_expr_error(p, a); - return list4((node*)NODE_IF, a, c, b); -} - -/* (:while cond body) */ -static node* -new_while(parser_state *p, node *a, node *b) -{ - void_expr_error(p, a); - return cons((node*)NODE_WHILE, cons(a, b)); -} - -/* (:until cond body) */ -static node* -new_until(parser_state *p, node *a, node *b) -{ - void_expr_error(p, a); - return cons((node*)NODE_UNTIL, cons(a, b)); -} - -/* (:for var obj body) */ -static node* -new_for(parser_state *p, node *v, node *o, node *b) -{ - void_expr_error(p, o); - return list4((node*)NODE_FOR, v, o, b); -} - -/* (:case a ((when ...) body) ((when...) body)) */ -static node* -new_case(parser_state *p, node *a, node *b) -{ - node *n = list2((node*)NODE_CASE, a); - node *n2 = n; - - void_expr_error(p, a); - while (n2->cdr) { - n2 = n2->cdr; - } - n2->cdr = b; - return n; -} - -/* (:postexe a) */ -static node* -new_postexe(parser_state *p, node *a) -{ - return cons((node*)NODE_POSTEXE, a); -} - -/* (:self) */ -static node* -new_self(parser_state *p) -{ - return list1((node*)NODE_SELF); -} - -/* (:call a b c) */ -static node* -new_call(parser_state *p, node *a, mrb_sym b, node *c, int pass) -{ - node *n = list4(nint(pass?NODE_CALL:NODE_SCALL), a, nsym(b), c); - void_expr_error(p, a); - NODE_LINENO(n, a); - return n; -} - -/* (:fcall self mid args) */ -static node* -new_fcall(parser_state *p, mrb_sym b, node *c) -{ - node *n = new_self(p); - NODE_LINENO(n, c); - n = list4((node*)NODE_FCALL, n, nsym(b), c); - NODE_LINENO(n, c); - return n; -} - -/* (:super . c) */ -static node* -new_super(parser_state *p, node *c) -{ - return cons((node*)NODE_SUPER, c); -} - -/* (:zsuper) */ -static node* -new_zsuper(parser_state *p) -{ - return list1((node*)NODE_ZSUPER); -} - -/* (:yield . c) */ -static node* -new_yield(parser_state *p, node *c) -{ - if (c) { - if (c->cdr) { - yyerror(p, "both block arg and actual block given"); - } - return cons((node*)NODE_YIELD, c->car); - } - return cons((node*)NODE_YIELD, 0); -} - -/* (:return . c) */ -static node* -new_return(parser_state *p, node *c) -{ - return cons((node*)NODE_RETURN, c); -} - -/* (:break . c) */ -static node* -new_break(parser_state *p, node *c) -{ - return cons((node*)NODE_BREAK, c); -} - -/* (:next . c) */ -static node* -new_next(parser_state *p, node *c) -{ - return cons((node*)NODE_NEXT, c); -} - -/* (:redo) */ -static node* -new_redo(parser_state *p) -{ - return list1((node*)NODE_REDO); -} - -/* (:retry) */ -static node* -new_retry(parser_state *p) -{ - return list1((node*)NODE_RETRY); -} - -/* (:dot2 a b) */ -static node* -new_dot2(parser_state *p, node *a, node *b) -{ - return cons((node*)NODE_DOT2, cons(a, b)); -} - -/* (:dot3 a b) */ -static node* -new_dot3(parser_state *p, node *a, node *b) -{ - return cons((node*)NODE_DOT3, cons(a, b)); -} - -/* (:colon2 b c) */ -static node* -new_colon2(parser_state *p, node *b, mrb_sym c) -{ - void_expr_error(p, b); - return cons((node*)NODE_COLON2, cons(b, nsym(c))); -} - -/* (:colon3 . c) */ -static node* -new_colon3(parser_state *p, mrb_sym c) -{ - return cons((node*)NODE_COLON3, nsym(c)); -} - -/* (:and a b) */ -static node* -new_and(parser_state *p, node *a, node *b) -{ - return cons((node*)NODE_AND, cons(a, b)); -} - -/* (:or a b) */ -static node* -new_or(parser_state *p, node *a, node *b) -{ - return cons((node*)NODE_OR, cons(a, b)); -} - -/* (:array a...) */ -static node* -new_array(parser_state *p, node *a) -{ - return cons((node*)NODE_ARRAY, a); -} - -/* (:splat . a) */ -static node* -new_splat(parser_state *p, node *a) -{ - return cons((node*)NODE_SPLAT, a); -} - -/* (:hash (k . v) (k . v)...) */ -static node* -new_hash(parser_state *p, node *a) -{ - return cons((node*)NODE_HASH, a); -} - -/* (:sym . a) */ -static node* -new_sym(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_SYM, nsym(sym)); -} - -static mrb_sym -new_strsym(parser_state *p, node* str) -{ - const char *s = (const char*)str->cdr->car; - size_t len = (size_t)str->cdr->cdr; - - return mrb_intern(p->mrb, s, len); -} - -/* (:lvar . a) */ -static node* -new_lvar(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_LVAR, nsym(sym)); -} - -/* (:gvar . a) */ -static node* -new_gvar(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_GVAR, nsym(sym)); -} - -/* (:ivar . a) */ -static node* -new_ivar(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_IVAR, nsym(sym)); -} - -/* (:cvar . a) */ -static node* -new_cvar(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_CVAR, nsym(sym)); -} - -/* (:const . a) */ -static node* -new_const(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_CONST, nsym(sym)); -} - -/* (:undef a...) */ -static node* -new_undef(parser_state *p, mrb_sym sym) -{ - return list2((node*)NODE_UNDEF, nsym(sym)); -} - -/* (:class class super body) */ -static node* -new_class(parser_state *p, node *c, node *s, node *b) -{ - void_expr_error(p, s); - return list4((node*)NODE_CLASS, c, s, cons(locals_node(p), b)); -} - -/* (:sclass obj body) */ -static node* -new_sclass(parser_state *p, node *o, node *b) -{ - void_expr_error(p, o); - return list3((node*)NODE_SCLASS, o, cons(locals_node(p), b)); -} - -/* (:module module body) */ -static node* -new_module(parser_state *p, node *m, node *b) -{ - return list3((node*)NODE_MODULE, m, cons(locals_node(p), b)); -} - -/* (:def m lv (arg . body)) */ -static node* -new_def(parser_state *p, mrb_sym m, node *a, node *b) -{ - return list5((node*)NODE_DEF, nsym(m), locals_node(p), a, b); -} - -/* (:sdef obj m lv (arg . body)) */ -static node* -new_sdef(parser_state *p, node *o, mrb_sym m, node *a, node *b) -{ - void_expr_error(p, o); - return list6((node*)NODE_SDEF, o, nsym(m), locals_node(p), a, b); -} - -/* (:arg . sym) */ -static node* -new_arg(parser_state *p, mrb_sym sym) -{ - return cons((node*)NODE_ARG, nsym(sym)); -} - -/* (m o r m2 b) */ -/* m: (a b c) */ -/* o: ((a . e1) (b . e2)) */ -/* r: a */ -/* m2: (a b c) */ -/* b: a */ -static node* -new_args(parser_state *p, node *m, node *opt, mrb_sym rest, node *m2, mrb_sym blk) -{ - node *n; - - n = cons(m2, nsym(blk)); - n = cons(nsym(rest), n); - n = cons(opt, n); - return cons(m, n); -} - -/* (:block_arg . a) */ -static node* -new_block_arg(parser_state *p, node *a) -{ - return cons((node*)NODE_BLOCK_ARG, a); -} - -/* (:block arg body) */ -static node* -new_block(parser_state *p, node *a, node *b) -{ - return list4((node*)NODE_BLOCK, locals_node(p), a, b); -} - -/* (:lambda arg body) */ -static node* -new_lambda(parser_state *p, node *a, node *b) -{ - return list4((node*)NODE_LAMBDA, locals_node(p), a, b); -} - -/* (:asgn lhs rhs) */ -static node* -new_asgn(parser_state *p, node *a, node *b) -{ - void_expr_error(p, b); - return cons((node*)NODE_ASGN, cons(a, b)); -} - -/* (:masgn mlhs=(pre rest post) mrhs) */ -static node* -new_masgn(parser_state *p, node *a, node *b) -{ - void_expr_error(p, b); - return cons((node*)NODE_MASGN, cons(a, b)); -} - -/* (:asgn lhs rhs) */ -static node* -new_op_asgn(parser_state *p, node *a, mrb_sym op, node *b) -{ - void_expr_error(p, b); - return list4((node*)NODE_OP_ASGN, a, nsym(op), b); -} - -/* (:int . i) */ -static node* -new_int(parser_state *p, const char *s, int base) -{ - return list3((node*)NODE_INT, (node*)strdup(s), nint(base)); -} - -/* (:float . i) */ -static node* -new_float(parser_state *p, const char *s) -{ - return cons((node*)NODE_FLOAT, (node*)strdup(s)); -} - -/* (:str . (s . len)) */ -static node* -new_str(parser_state *p, const char *s, size_t len) -{ - return cons((node*)NODE_STR, cons((node*)strndup(s, len), nint(len))); -} - -/* (:dstr . a) */ -static node* -new_dstr(parser_state *p, node *a) -{ - return cons((node*)NODE_DSTR, a); -} - -/* (:str . (s . len)) */ -static node* -new_xstr(parser_state *p, const char *s, int len) -{ - return cons((node*)NODE_XSTR, cons((node*)strndup(s, len), nint(len))); -} - -/* (:xstr . a) */ -static node* -new_dxstr(parser_state *p, node *a) -{ - return cons((node*)NODE_DXSTR, a); -} - -/* (:dsym . a) */ -static node* -new_dsym(parser_state *p, node *a) -{ - return cons((node*)NODE_DSYM, new_dstr(p, a)); -} - -/* (:regx . (s . (opt . enc))) */ -static node* -new_regx(parser_state *p, const char *p1, const char* p2, const char* p3) -{ - return cons((node*)NODE_REGX, cons((node*)p1, cons((node*)p2, (node*)p3))); -} - -/* (:dregx . (a . b)) */ -static node* -new_dregx(parser_state *p, node *a, node *b) -{ - return cons((node*)NODE_DREGX, cons(a, b)); -} - -/* (:backref . n) */ -static node* -new_back_ref(parser_state *p, int n) -{ - return cons((node*)NODE_BACK_REF, nint(n)); -} - -/* (:nthref . n) */ -static node* -new_nth_ref(parser_state *p, int n) -{ - return cons((node*)NODE_NTH_REF, nint(n)); -} - -/* (:heredoc . a) */ -static node* -new_heredoc(parser_state *p) -{ - parser_heredoc_info *inf = (parser_heredoc_info *)parser_palloc(p, sizeof(parser_heredoc_info)); - return cons((node*)NODE_HEREDOC, (node*)inf); -} - -static void -new_bv(parser_state *p, mrb_sym id) -{ -} - -static node* -new_literal_delim(parser_state *p) -{ - return cons((node*)NODE_LITERAL_DELIM, 0); -} - -/* (:words . a) */ -static node* -new_words(parser_state *p, node *a) -{ - return cons((node*)NODE_WORDS, a); -} - -/* (:symbols . a) */ -static node* -new_symbols(parser_state *p, node *a) -{ - return cons((node*)NODE_SYMBOLS, a); -} - -/* xxx ----------------------------- */ - -/* (:call a op) */ -static node* -call_uni_op(parser_state *p, node *recv, const char *m) -{ - void_expr_error(p, recv); - return new_call(p, recv, intern_cstr(m), 0, 1); -} - -/* (:call a op b) */ -static node* -call_bin_op(parser_state *p, node *recv, const char *m, node *arg1) -{ - return new_call(p, recv, intern_cstr(m), list1(list1(arg1)), 1); -} - -static void -args_with_block(parser_state *p, node *a, node *b) -{ - if (b) { - if (a->cdr) { - yyerror(p, "both block arg and actual block given"); - } - a->cdr = b; - } -} - -static void -call_with_block(parser_state *p, node *a, node *b) -{ - node *n; - - switch ((enum node_type)intn(a->car)) { - case NODE_SUPER: - case NODE_ZSUPER: - if (!a->cdr) a->cdr = cons(0, b); - else { - args_with_block(p, a->cdr, b); - } - break; - case NODE_CALL: - case NODE_FCALL: - case NODE_SCALL: - n = a->cdr->cdr->cdr; - if (!n->car) n->car = cons(0, b); - else { - args_with_block(p, n->car, b); - } - break; - default: - break; - } -} - -static node* -negate_lit(parser_state *p, node *n) -{ - return cons((node*)NODE_NEGATE, n); -} - -static node* -cond(node *n) -{ - return n; -} - -static node* -ret_args(parser_state *p, node *n) -{ - if (n->cdr) { - yyerror(p, "block argument should not be given"); - return NULL; - } - if (!n->car->cdr) return n->car->car; - return new_array(p, n->car); -} - -static void -assignable(parser_state *p, node *lhs) -{ - if (intn(lhs->car) == NODE_LVAR) { - local_add(p, sym(lhs->cdr)); - } -} - -static node* -var_reference(parser_state *p, node *lhs) -{ - node *n; - - if (intn(lhs->car) == NODE_LVAR) { - if (!local_var_p(p, sym(lhs->cdr))) { - n = new_fcall(p, sym(lhs->cdr), 0); - cons_free(lhs); - return n; - } - } - - return lhs; -} - -typedef enum mrb_string_type string_type; - -static node* -new_strterm(parser_state *p, string_type type, int term, int paren) -{ - return cons(nint(type), cons((node*)0, cons(nint(paren), nint(term)))); -} - -static void -end_strterm(parser_state *p) -{ - cons_free(p->lex_strterm->cdr->cdr); - cons_free(p->lex_strterm->cdr); - cons_free(p->lex_strterm); - p->lex_strterm = NULL; -} - -static parser_heredoc_info * -parsing_heredoc_inf(parser_state *p) -{ - node *nd = p->parsing_heredoc; - if (nd == NULL) - return NULL; - /* mrb_assert(nd->car->car == NODE_HEREDOC); */ - return (parser_heredoc_info*)nd->car->cdr; -} - -static void -heredoc_treat_nextline(parser_state *p) -{ - if (p->heredocs_from_nextline == NULL) - return; - if (p->parsing_heredoc == NULL) { - node *n; - p->parsing_heredoc = p->heredocs_from_nextline; - p->lex_strterm_before_heredoc = p->lex_strterm; - p->lex_strterm = new_strterm(p, parsing_heredoc_inf(p)->type, 0, 0); - n = p->all_heredocs; - if (n) { - while (n->cdr) - n = n->cdr; - n->cdr = p->parsing_heredoc; - } - else { - p->all_heredocs = p->parsing_heredoc; - } - } - else { - node *n, *m; - m = p->heredocs_from_nextline; - while (m->cdr) - m = m->cdr; - n = p->all_heredocs; - mrb_assert(n != NULL); - if (n == p->parsing_heredoc) { - m->cdr = n; - p->all_heredocs = p->heredocs_from_nextline; - p->parsing_heredoc = p->heredocs_from_nextline; - } - else { - while (n->cdr != p->parsing_heredoc) { - n = n->cdr; - mrb_assert(n != NULL); - } - m->cdr = n->cdr; - n->cdr = p->heredocs_from_nextline; - p->parsing_heredoc = p->heredocs_from_nextline; - } - } - p->heredocs_from_nextline = NULL; -} - -static void -heredoc_end(parser_state *p) -{ - p->parsing_heredoc = p->parsing_heredoc->cdr; - if (p->parsing_heredoc == NULL) { - p->lstate = EXPR_BEG; - p->cmd_start = TRUE; - end_strterm(p); - p->lex_strterm = p->lex_strterm_before_heredoc; - p->lex_strterm_before_heredoc = NULL; - p->heredoc_end_now = TRUE; - } - else { - /* next heredoc */ - p->lex_strterm->car = nint(parsing_heredoc_inf(p)->type); - } -} -#define is_strterm_type(p,str_func) (intn((p)->lex_strterm->car) & (str_func)) - -/* xxx ----------------------------- */ - -%} - -%pure-parser -%parse-param {parser_state *p} -%lex-param {parser_state *p} - -%union { - node *nd; - mrb_sym id; - int num; - stack_type stack; - const struct vtable *vars; -} - -%token <num> - keyword_class - keyword_module - keyword_def - keyword_begin - keyword_if - keyword_unless - keyword_while - keyword_until - keyword_for - -%token - keyword_undef - keyword_rescue - keyword_ensure - keyword_end - keyword_then - keyword_elsif - keyword_else - keyword_case - keyword_when - keyword_break - keyword_next - keyword_redo - keyword_retry - keyword_in - keyword_do - keyword_do_cond - keyword_do_block - keyword_do_LAMBDA - keyword_return - keyword_yield - keyword_super - keyword_self - keyword_nil - keyword_true - keyword_false - keyword_and - keyword_or - keyword_not - modifier_if - modifier_unless - modifier_while - modifier_until - modifier_rescue - keyword_alias - keyword_BEGIN - keyword_END - keyword__LINE__ - keyword__FILE__ - keyword__ENCODING__ - -%token <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL -%token <nd> tINTEGER tFLOAT tCHAR tXSTRING tREGEXP -%token <nd> tSTRING tSTRING_PART tSTRING_MID tLABEL_END -%token <nd> tNTH_REF tBACK_REF -%token <num> tREGEXP_END - -%type <nd> singleton string string_rep string_interp xstring regexp -%type <nd> literal numeric cpath symbol -%type <nd> top_compstmt top_stmts top_stmt -%type <nd> bodystmt compstmt stmts stmt expr arg primary command command_call method_call -%type <nd> expr_value arg_rhs primary_value -%type <nd> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure -%type <nd> args call_args opt_call_args -%type <nd> paren_args opt_paren_args variable -%type <nd> command_args aref_args opt_block_arg block_arg var_ref var_lhs -%type <nd> command_asgn command_rhs mrhs superclass block_call block_command -%type <nd> f_block_optarg f_block_opt -%type <nd> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs -%type <nd> assoc_list assocs assoc undef_list backref for_var -%type <nd> block_param opt_block_param block_param_def f_opt -%type <nd> bv_decls opt_bv_decl bvar f_larglist lambda_body -%type <nd> brace_block cmd_brace_block do_block lhs none f_bad_arg -%type <nd> mlhs mlhs_list mlhs_post mlhs_basic mlhs_item mlhs_node mlhs_inner -%type <id> fsym sym basic_symbol operation operation2 operation3 -%type <id> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_opt_asgn -%type <nd> heredoc words symbols -%type <num> call_op call_op2 /* 0:'&.', 1:'.', 2:'::' */ - -%token tUPLUS /* unary+ */ -%token tUMINUS /* unary- */ -%token tPOW /* ** */ -%token tCMP /* <=> */ -%token tEQ /* == */ -%token tEQQ /* === */ -%token tNEQ /* != */ -%token tGEQ /* >= */ -%token tLEQ /* <= */ -%token tANDOP tOROP /* && and || */ -%token tMATCH tNMATCH /* =~ and !~ */ -%token tDOT2 tDOT3 /* .. and ... */ -%token tAREF tASET /* [] and []= */ -%token tLSHFT tRSHFT /* << and >> */ -%token tCOLON2 /* :: */ -%token tCOLON3 /* :: at EXPR_BEG */ -%token <id> tOP_ASGN /* +=, -= etc. */ -%token tASSOC /* => */ -%token tLPAREN /* ( */ -%token tLPAREN_ARG /* ( */ -%token tRPAREN /* ) */ -%token tLBRACK /* [ */ -%token tLBRACE /* { */ -%token tLBRACE_ARG /* { */ -%token tSTAR /* * */ -%token tAMPER /* & */ -%token tLAMBDA /* -> */ -%token tANDDOT /* &. */ -%token tSYMBEG tREGEXP_BEG tWORDS_BEG tSYMBOLS_BEG -%token tSTRING_BEG tXSTRING_BEG tSTRING_DVAR tLAMBEG -%token <nd> tHEREDOC_BEG /* <<, <<- */ -%token tHEREDOC_END tLITERAL_DELIM tHD_LITERAL_DELIM -%token <nd> tHD_STRING_PART tHD_STRING_MID - -/* - * precedence table - */ - -%nonassoc tLOWEST -%nonassoc tLBRACE_ARG - -%nonassoc modifier_if modifier_unless modifier_while modifier_until -%left keyword_or keyword_and -%right keyword_not -%right '=' tOP_ASGN -%left modifier_rescue -%right '?' ':' -%nonassoc tDOT2 tDOT3 -%left tOROP -%left tANDOP -%nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH -%left '>' tGEQ '<' tLEQ -%left '|' '^' -%left '&' -%left tLSHFT tRSHFT -%left '+' '-' -%left '*' '/' '%' -%right tUMINUS_NUM tUMINUS -%right tPOW -%right '!' '~' tUPLUS - -%token tLAST_TOKEN - -%% -program : { - p->lstate = EXPR_BEG; - if (!p->locals) p->locals = cons(0,0); - } - top_compstmt - { - p->tree = new_scope(p, $2); - NODE_LINENO(p->tree, $2); - } - ; - -top_compstmt : top_stmts opt_terms - { - $$ = $1; - } - ; - -top_stmts : none - { - $$ = new_begin(p, 0); - } - | top_stmt - { - $$ = new_begin(p, $1); - NODE_LINENO($$, $1); - } - | top_stmts terms top_stmt - { - $$ = push($1, newline_node($3)); - } - | error top_stmt - { - $$ = new_begin(p, 0); - } - ; - -top_stmt : stmt - | keyword_BEGIN - { - $<nd>$ = local_switch(p); - } - '{' top_compstmt '}' - { - yyerror(p, "BEGIN not supported"); - local_resume(p, $<nd>2); - $$ = 0; - } - ; - -bodystmt : compstmt - opt_rescue - opt_else - opt_ensure - { - if ($2) { - $$ = new_rescue(p, $1, $2, $3); - NODE_LINENO($$, $1); - } - else if ($3) { - yywarn(p, "else without rescue is useless"); - $$ = push($1, $3); - } - else { - $$ = $1; - } - if ($4) { - if ($$) { - $$ = new_ensure(p, $$, $4); - } - else { - $$ = push($4, new_nil(p)); - } - } - } - ; - -compstmt : stmts opt_terms - { - $$ = $1; - } - ; - -stmts : none - { - $$ = new_begin(p, 0); - } - | stmt - { - $$ = new_begin(p, $1); - NODE_LINENO($$, $1); - } - | stmts terms stmt - { - $$ = push($1, newline_node($3)); - } - | error stmt - { - $$ = new_begin(p, $2); - } - ; - -stmt : keyword_alias fsym {p->lstate = EXPR_FNAME;} fsym - { - $$ = new_alias(p, $2, $4); - } - | keyword_undef undef_list - { - $$ = $2; - } - | stmt modifier_if expr_value - { - $$ = new_if(p, cond($3), $1, 0); - } - | stmt modifier_unless expr_value - { - $$ = new_unless(p, cond($3), $1, 0); - } - | stmt modifier_while expr_value - { - $$ = new_while(p, cond($3), $1); - } - | stmt modifier_until expr_value - { - $$ = new_until(p, cond($3), $1); - } - | stmt modifier_rescue stmt - { - $$ = new_mod_rescue(p, $1, $3); - } - | keyword_END '{' compstmt '}' - { - yyerror(p, "END not supported"); - $$ = new_postexe(p, $3); - } - | command_asgn - | mlhs '=' command_call - { - $$ = new_masgn(p, $1, $3); - } - | lhs '=' mrhs - { - $$ = new_asgn(p, $1, new_array(p, $3)); - } - | mlhs '=' arg - { - $$ = new_masgn(p, $1, $3); - } - | mlhs '=' mrhs - { - $$ = new_masgn(p, $1, new_array(p, $3)); - } - | expr - ; - -command_asgn : lhs '=' command_rhs - { - $$ = new_asgn(p, $1, $3); - } - | var_lhs tOP_ASGN command_rhs - { - $$ = new_op_asgn(p, $1, $2, $3); - } - | primary_value '[' opt_call_args rbracket tOP_ASGN command_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, intern("[]",2), $3, '.'), $5, $6); - } - | primary_value call_op tIDENTIFIER tOP_ASGN command_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5); - } - | primary_value call_op tCONSTANT tOP_ASGN command_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5); - } - | primary_value tCOLON2 tCONSTANT tOP_ASGN command_call - { - yyerror(p, "constant re-assignment"); - $$ = 0; - } - | primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, $3, 0, tCOLON2), $4, $5); - } - | backref tOP_ASGN command_rhs - { - backref_error(p, $1); - $$ = new_begin(p, 0); - } - ; - -command_rhs : command_call %prec tOP_ASGN - | command_call modifier_rescue stmt - { - $$ = new_mod_rescue(p, $1, $3); - } - | command_asgn - ; - - -expr : command_call - | expr keyword_and expr - { - $$ = new_and(p, $1, $3); - } - | expr keyword_or expr - { - $$ = new_or(p, $1, $3); - } - | keyword_not opt_nl expr - { - $$ = call_uni_op(p, cond($3), "!"); - } - | '!' command_call - { - $$ = call_uni_op(p, cond($2), "!"); - } - | arg - ; - -expr_value : expr - { - if (!$1) $$ = new_nil(p); - else { - $$ = $1; - } - } - ; - -command_call : command - | block_command - ; - -block_command : block_call - | block_call call_op2 operation2 command_args - { - $$ = new_call(p, $1, $3, $4, $2); - } - ; - -cmd_brace_block : tLBRACE_ARG - { - local_nest(p); - } - opt_block_param - compstmt - '}' - { - $$ = new_block(p, $3, $4); - local_unnest(p); - } - ; - -command : operation command_args %prec tLOWEST - { - $$ = new_fcall(p, $1, $2); - } - | operation command_args cmd_brace_block - { - args_with_block(p, $2, $3); - $$ = new_fcall(p, $1, $2); - } - | primary_value call_op operation2 command_args %prec tLOWEST - { - $$ = new_call(p, $1, $3, $4, $2); - } - | primary_value call_op operation2 command_args cmd_brace_block - { - args_with_block(p, $4, $5); - $$ = new_call(p, $1, $3, $4, $2); - } - | primary_value tCOLON2 operation2 command_args %prec tLOWEST - { - $$ = new_call(p, $1, $3, $4, tCOLON2); - } - | primary_value tCOLON2 operation2 command_args cmd_brace_block - { - args_with_block(p, $4, $5); - $$ = new_call(p, $1, $3, $4, tCOLON2); - } - | keyword_super command_args - { - $$ = new_super(p, $2); - } - | keyword_yield command_args - { - $$ = new_yield(p, $2); - } - | keyword_return call_args - { - $$ = new_return(p, ret_args(p, $2)); - } - | keyword_break call_args - { - $$ = new_break(p, ret_args(p, $2)); - } - | keyword_next call_args - { - $$ = new_next(p, ret_args(p, $2)); - } - ; - -mlhs : mlhs_basic - { - $$ = $1; - } - | tLPAREN mlhs_inner rparen - { - $$ = $2; - } - ; - -mlhs_inner : mlhs_basic - | tLPAREN mlhs_inner rparen - { - $$ = $2; - } - ; - -mlhs_basic : mlhs_list - { - $$ = list1($1); - } - | mlhs_list mlhs_item - { - $$ = list1(push($1,$2)); - } - | mlhs_list tSTAR mlhs_node - { - $$ = list2($1, $3); - } - | mlhs_list tSTAR mlhs_node ',' mlhs_post - { - $$ = list3($1, $3, $5); - } - | mlhs_list tSTAR - { - $$ = list2($1, new_nil(p)); - } - | mlhs_list tSTAR ',' mlhs_post - { - $$ = list3($1, new_nil(p), $4); - } - | tSTAR mlhs_node - { - $$ = list2(0, $2); - } - | tSTAR mlhs_node ',' mlhs_post - { - $$ = list3(0, $2, $4); - } - | tSTAR - { - $$ = list2(0, new_nil(p)); - } - | tSTAR ',' mlhs_post - { - $$ = list3(0, new_nil(p), $3); - } - ; - -mlhs_item : mlhs_node - | tLPAREN mlhs_inner rparen - { - $$ = new_masgn(p, $2, NULL); - } - ; - -mlhs_list : mlhs_item ',' - { - $$ = list1($1); - } - | mlhs_list mlhs_item ',' - { - $$ = push($1, $2); - } - ; - -mlhs_post : mlhs_item - { - $$ = list1($1); - } - | mlhs_list mlhs_item - { - $$ = push($1, $2); - } - ; - -mlhs_node : variable - { - assignable(p, $1); - } - | primary_value '[' opt_call_args rbracket - { - $$ = new_call(p, $1, intern("[]",2), $3, '.'); - } - | primary_value call_op tIDENTIFIER - { - $$ = new_call(p, $1, $3, 0, $2); - } - | primary_value tCOLON2 tIDENTIFIER - { - $$ = new_call(p, $1, $3, 0, tCOLON2); - } - | primary_value call_op tCONSTANT - { - $$ = new_call(p, $1, $3, 0, $2); - } - | primary_value tCOLON2 tCONSTANT - { - if (p->in_def || p->in_single) - yyerror(p, "dynamic constant assignment"); - $$ = new_colon2(p, $1, $3); - } - | tCOLON3 tCONSTANT - { - if (p->in_def || p->in_single) - yyerror(p, "dynamic constant assignment"); - $$ = new_colon3(p, $2); - } - | backref - { - backref_error(p, $1); - $$ = 0; - } - ; - -lhs : variable - { - assignable(p, $1); - } - | primary_value '[' opt_call_args rbracket - { - $$ = new_call(p, $1, intern("[]",2), $3, '.'); - } - | primary_value call_op tIDENTIFIER - { - $$ = new_call(p, $1, $3, 0, $2); - } - | primary_value tCOLON2 tIDENTIFIER - { - $$ = new_call(p, $1, $3, 0, tCOLON2); - } - | primary_value call_op tCONSTANT - { - $$ = new_call(p, $1, $3, 0, $2); - } - | primary_value tCOLON2 tCONSTANT - { - if (p->in_def || p->in_single) - yyerror(p, "dynamic constant assignment"); - $$ = new_colon2(p, $1, $3); - } - | tCOLON3 tCONSTANT - { - if (p->in_def || p->in_single) - yyerror(p, "dynamic constant assignment"); - $$ = new_colon3(p, $2); - } - | backref - { - backref_error(p, $1); - $$ = 0; - } - ; - -cname : tIDENTIFIER - { - yyerror(p, "class/module name must be CONSTANT"); - } - | tCONSTANT - ; - -cpath : tCOLON3 cname - { - $$ = cons((node*)1, nsym($2)); - } - | cname - { - $$ = cons((node*)0, nsym($1)); - } - | primary_value tCOLON2 cname - { - void_expr_error(p, $1); - $$ = cons($1, nsym($3)); - } - ; - -fname : tIDENTIFIER - | tCONSTANT - | tFID - | op - { - p->lstate = EXPR_ENDFN; - $$ = $1; - } - | reswords - { - p->lstate = EXPR_ENDFN; - $$ = $<id>1; - } - ; - -fsym : fname - | basic_symbol - ; - -undef_list : fsym - { - $$ = new_undef(p, $1); - } - | undef_list ',' {p->lstate = EXPR_FNAME;} fsym - { - $$ = push($1, nsym($4)); - } - ; - -op : '|' { $$ = intern_c('|'); } - | '^' { $$ = intern_c('^'); } - | '&' { $$ = intern_c('&'); } - | tCMP { $$ = intern("<=>",3); } - | tEQ { $$ = intern("==",2); } - | tEQQ { $$ = intern("===",3); } - | tMATCH { $$ = intern("=~",2); } - | tNMATCH { $$ = intern("!~",2); } - | '>' { $$ = intern_c('>'); } - | tGEQ { $$ = intern(">=",2); } - | '<' { $$ = intern_c('<'); } - | tLEQ { $$ = intern("<=",2); } - | tNEQ { $$ = intern("!=",2); } - | tLSHFT { $$ = intern("<<",2); } - | tRSHFT { $$ = intern(">>",2); } - | '+' { $$ = intern_c('+'); } - | '-' { $$ = intern_c('-'); } - | '*' { $$ = intern_c('*'); } - | tSTAR { $$ = intern_c('*'); } - | '/' { $$ = intern_c('/'); } - | '%' { $$ = intern_c('%'); } - | tPOW { $$ = intern("**",2); } - | '!' { $$ = intern_c('!'); } - | '~' { $$ = intern_c('~'); } - | tUPLUS { $$ = intern("+@",2); } - | tUMINUS { $$ = intern("-@",2); } - | tAREF { $$ = intern("[]",2); } - | tASET { $$ = intern("[]=",3); } - | '`' { $$ = intern_c('`'); } - ; - -reswords : keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__ - | keyword_BEGIN | keyword_END - | keyword_alias | keyword_and | keyword_begin - | keyword_break | keyword_case | keyword_class | keyword_def - | keyword_do | keyword_else | keyword_elsif - | keyword_end | keyword_ensure | keyword_false - | keyword_for | keyword_in | keyword_module | keyword_next - | keyword_nil | keyword_not | keyword_or | keyword_redo - | keyword_rescue | keyword_retry | keyword_return | keyword_self - | keyword_super | keyword_then | keyword_true | keyword_undef - | keyword_when | keyword_yield | keyword_if | keyword_unless - | keyword_while | keyword_until - ; - -arg : lhs '=' arg_rhs - { - $$ = new_asgn(p, $1, $3); - } - | var_lhs tOP_ASGN arg_rhs - { - $$ = new_op_asgn(p, $1, $2, $3); - } - | primary_value '[' opt_call_args rbracket tOP_ASGN arg_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, intern("[]",2), $3, '.'), $5, $6); - } - | primary_value call_op tIDENTIFIER tOP_ASGN arg_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5); - } - | primary_value call_op tCONSTANT tOP_ASGN arg_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5); - } - | primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg_rhs - { - $$ = new_op_asgn(p, new_call(p, $1, $3, 0, tCOLON2), $4, $5); - } - | primary_value tCOLON2 tCONSTANT tOP_ASGN arg_rhs - { - yyerror(p, "constant re-assignment"); - $$ = new_begin(p, 0); - } - | tCOLON3 tCONSTANT tOP_ASGN arg_rhs - { - yyerror(p, "constant re-assignment"); - $$ = new_begin(p, 0); - } - | backref tOP_ASGN arg_rhs - { - backref_error(p, $1); - $$ = new_begin(p, 0); - } - | arg tDOT2 arg - { - $$ = new_dot2(p, $1, $3); - } - | arg tDOT3 arg - { - $$ = new_dot3(p, $1, $3); - } - | arg '+' arg - { - $$ = call_bin_op(p, $1, "+", $3); - } - | arg '-' arg - { - $$ = call_bin_op(p, $1, "-", $3); - } - | arg '*' arg - { - $$ = call_bin_op(p, $1, "*", $3); - } - | arg '/' arg - { - $$ = call_bin_op(p, $1, "/", $3); - } - | arg '%' arg - { - $$ = call_bin_op(p, $1, "%", $3); - } - | arg tPOW arg - { - $$ = call_bin_op(p, $1, "**", $3); - } - | tUMINUS_NUM tINTEGER tPOW arg - { - $$ = call_uni_op(p, call_bin_op(p, $2, "**", $4), "-@"); - } - | tUMINUS_NUM tFLOAT tPOW arg - { - $$ = call_uni_op(p, call_bin_op(p, $2, "**", $4), "-@"); - } - | tUPLUS arg - { - $$ = call_uni_op(p, $2, "+@"); - } - | tUMINUS arg - { - $$ = call_uni_op(p, $2, "-@"); - } - | arg '|' arg - { - $$ = call_bin_op(p, $1, "|", $3); - } - | arg '^' arg - { - $$ = call_bin_op(p, $1, "^", $3); - } - | arg '&' arg - { - $$ = call_bin_op(p, $1, "&", $3); - } - | arg tCMP arg - { - $$ = call_bin_op(p, $1, "<=>", $3); - } - | arg '>' arg - { - $$ = call_bin_op(p, $1, ">", $3); - } - | arg tGEQ arg - { - $$ = call_bin_op(p, $1, ">=", $3); - } - | arg '<' arg - { - $$ = call_bin_op(p, $1, "<", $3); - } - | arg tLEQ arg - { - $$ = call_bin_op(p, $1, "<=", $3); - } - | arg tEQ arg - { - $$ = call_bin_op(p, $1, "==", $3); - } - | arg tEQQ arg - { - $$ = call_bin_op(p, $1, "===", $3); - } - | arg tNEQ arg - { - $$ = call_bin_op(p, $1, "!=", $3); - } - | arg tMATCH arg - { - $$ = call_bin_op(p, $1, "=~", $3); - } - | arg tNMATCH arg - { - $$ = call_bin_op(p, $1, "!~", $3); - } - | '!' arg - { - $$ = call_uni_op(p, cond($2), "!"); - } - | '~' arg - { - $$ = call_uni_op(p, cond($2), "~"); - } - | arg tLSHFT arg - { - $$ = call_bin_op(p, $1, "<<", $3); - } - | arg tRSHFT arg - { - $$ = call_bin_op(p, $1, ">>", $3); - } - | arg tANDOP arg - { - $$ = new_and(p, $1, $3); - } - | arg tOROP arg - { - $$ = new_or(p, $1, $3); - } - | arg '?' arg opt_nl ':' arg - { - $$ = new_if(p, cond($1), $3, $6); - } - | primary - { - $$ = $1; - } - ; - -aref_args : none - | args trailer - { - $$ = $1; - NODE_LINENO($$, $1); - } - | args comma assocs trailer - { - $$ = push($1, new_hash(p, $3)); - } - | assocs trailer - { - $$ = cons(new_hash(p, $1), 0); - NODE_LINENO($$, $1); - } - ; - -arg_rhs : arg %prec tOP_ASGN - { - $$ = $1; - } - | arg modifier_rescue arg - { - void_expr_error(p, $1); - void_expr_error(p, $3); - $$ = new_mod_rescue(p, $1, $3); - } - ; - -paren_args : '(' opt_call_args rparen - { - $$ = $2; - } - ; - -opt_paren_args : none - | paren_args - ; - -opt_call_args : none - | call_args - | args ',' - { - $$ = cons($1,0); - NODE_LINENO($$, $1); - } - | args comma assocs ',' - { - $$ = cons(push($1, new_hash(p, $3)), 0); - NODE_LINENO($$, $1); - } - | assocs ',' - { - $$ = cons(list1(new_hash(p, $1)), 0); - NODE_LINENO($$, $1); - } - ; - -call_args : command - { - void_expr_error(p, $1); - $$ = cons(list1($1), 0); - NODE_LINENO($$, $1); - } - | args opt_block_arg - { - $$ = cons($1, $2); - NODE_LINENO($$, $1); - } - | assocs opt_block_arg - { - $$ = cons(list1(new_hash(p, $1)), $2); - NODE_LINENO($$, $1); - } - | args comma assocs opt_block_arg - { - $$ = cons(push($1, new_hash(p, $3)), $4); - NODE_LINENO($$, $1); - } - | block_arg - { - $$ = cons(0, $1); - NODE_LINENO($$, $1); - } - ; - -command_args : { - $<stack>$ = p->cmdarg_stack; - CMDARG_PUSH(1); - } - call_args - { - p->cmdarg_stack = $<stack>1; - $$ = $2; - } - ; - -block_arg : tAMPER arg - { - $$ = new_block_arg(p, $2); - } - ; - -opt_block_arg : comma block_arg - { - $$ = $2; - } - | none - { - $$ = 0; - } - ; - -comma : ',' - | ',' heredoc_bodies - ; - -args : arg - { - void_expr_error(p, $1); - $$ = cons($1, 0); - NODE_LINENO($$, $1); - } - | tSTAR arg - { - void_expr_error(p, $2); - $$ = cons(new_splat(p, $2), 0); - NODE_LINENO($$, $2); - } - | args comma arg - { - void_expr_error(p, $3); - $$ = push($1, $3); - } - | args comma tSTAR arg - { - void_expr_error(p, $4); - $$ = push($1, new_splat(p, $4)); - } - ; - -mrhs : args comma arg - { - void_expr_error(p, $3); - $$ = push($1, $3); - } - | args comma tSTAR arg - { - void_expr_error(p, $4); - $$ = push($1, new_splat(p, $4)); - } - | tSTAR arg - { - void_expr_error(p, $2); - $$ = list1(new_splat(p, $2)); - } - ; - -primary : literal - | string - | xstring - | regexp - | heredoc - | var_ref - | backref - | tFID - { - $$ = new_fcall(p, $1, 0); - } - | keyword_begin - { - $<stack>$ = p->cmdarg_stack; - p->cmdarg_stack = 0; - } - bodystmt - keyword_end - { - p->cmdarg_stack = $<stack>2; - $$ = $3; - } - | tLPAREN_ARG - { - $<stack>$ = p->cmdarg_stack; - p->cmdarg_stack = 0; - } - stmt {p->lstate = EXPR_ENDARG;} rparen - { - p->cmdarg_stack = $<stack>2; - $$ = $3; - } - | tLPAREN_ARG {p->lstate = EXPR_ENDARG;} rparen - { - $$ = new_nil(p); - } - | tLPAREN compstmt ')' - { - $$ = $2; - } - | primary_value tCOLON2 tCONSTANT - { - $$ = new_colon2(p, $1, $3); - } - | tCOLON3 tCONSTANT - { - $$ = new_colon3(p, $2); - } - | tLBRACK aref_args ']' - { - $$ = new_array(p, $2); - NODE_LINENO($$, $2); - } - | tLBRACE assoc_list '}' - { - $$ = new_hash(p, $2); - NODE_LINENO($$, $2); - } - | keyword_return - { - $$ = new_return(p, 0); - } - | keyword_yield opt_paren_args - { - $$ = new_yield(p, $2); - } - | keyword_not '(' expr rparen - { - $$ = call_uni_op(p, cond($3), "!"); - } - | keyword_not '(' rparen - { - $$ = call_uni_op(p, new_nil(p), "!"); - } - | operation brace_block - { - $$ = new_fcall(p, $1, cons(0, $2)); - } - | method_call - | method_call brace_block - { - call_with_block(p, $1, $2); - $$ = $1; - } - | tLAMBDA - { - local_nest(p); - $<num>$ = p->lpar_beg; - p->lpar_beg = ++p->paren_nest; - } - f_larglist - { - $<stack>$ = p->cmdarg_stack; - p->cmdarg_stack = 0; - } - lambda_body - { - p->lpar_beg = $<num>2; - $$ = new_lambda(p, $3, $5); - local_unnest(p); - p->cmdarg_stack = $<stack>4; - CMDARG_LEXPOP(); - } - | keyword_if expr_value then - compstmt - if_tail - keyword_end - { - $$ = new_if(p, cond($2), $4, $5); - SET_LINENO($$, $1); - } - | keyword_unless expr_value then - compstmt - opt_else - keyword_end - { - $$ = new_unless(p, cond($2), $4, $5); - SET_LINENO($$, $1); - } - | keyword_while {COND_PUSH(1);} expr_value do {COND_POP();} - compstmt - keyword_end - { - $$ = new_while(p, cond($3), $6); - SET_LINENO($$, $1); - } - | keyword_until {COND_PUSH(1);} expr_value do {COND_POP();} - compstmt - keyword_end - { - $$ = new_until(p, cond($3), $6); - SET_LINENO($$, $1); - } - | keyword_case expr_value opt_terms - case_body - keyword_end - { - $$ = new_case(p, $2, $4); - } - | keyword_case opt_terms case_body keyword_end - { - $$ = new_case(p, 0, $3); - } - | keyword_for for_var keyword_in - {COND_PUSH(1);} - expr_value do - {COND_POP();} - compstmt - keyword_end - { - $$ = new_for(p, $2, $5, $8); - SET_LINENO($$, $1); - } - | keyword_class - cpath superclass - { - if (p->in_def || p->in_single) - yyerror(p, "class definition in method body"); - $<nd>$ = local_switch(p); - } - bodystmt - keyword_end - { - $$ = new_class(p, $2, $3, $5); - SET_LINENO($$, $1); - local_resume(p, $<nd>4); - } - | keyword_class - tLSHFT expr - { - $<num>$ = p->in_def; - p->in_def = 0; - } - term - { - $<nd>$ = cons(local_switch(p), nint(p->in_single)); - p->in_single = 0; - } - bodystmt - keyword_end - { - $$ = new_sclass(p, $3, $7); - SET_LINENO($$, $1); - local_resume(p, $<nd>6->car); - p->in_def = $<num>4; - p->in_single = intn($<nd>6->cdr); - } - | keyword_module - cpath - { - if (p->in_def || p->in_single) - yyerror(p, "module definition in method body"); - $<nd>$ = local_switch(p); - } - bodystmt - keyword_end - { - $$ = new_module(p, $2, $4); - SET_LINENO($$, $1); - local_resume(p, $<nd>3); - } - | keyword_def fname - { - $<stack>$ = p->cmdarg_stack; - p->cmdarg_stack = 0; - } - { - p->in_def++; - $<nd>$ = local_switch(p); - } - f_arglist - bodystmt - keyword_end - { - $$ = new_def(p, $2, $5, $6); - SET_LINENO($$, $1); - local_resume(p, $<nd>4); - p->in_def--; - p->cmdarg_stack = $<stack>3; - } - | keyword_def singleton dot_or_colon - { - p->lstate = EXPR_FNAME; - $<stack>$ = p->cmdarg_stack; - p->cmdarg_stack = 0; - } - fname - { - p->in_single++; - p->lstate = EXPR_ENDFN; /* force for args */ - $<nd>$ = local_switch(p); - } - f_arglist - bodystmt - keyword_end - { - $$ = new_sdef(p, $2, $5, $7, $8); - SET_LINENO($$, $1); - local_resume(p, $<nd>6); - p->in_single--; - p->cmdarg_stack = $<stack>4; - } - | keyword_break - { - $$ = new_break(p, 0); - } - | keyword_next - { - $$ = new_next(p, 0); - } - | keyword_redo - { - $$ = new_redo(p); - } - | keyword_retry - { - $$ = new_retry(p); - } - ; - -primary_value : primary - { - $$ = $1; - if (!$$) $$ = new_nil(p); - } - ; - -then : term - | keyword_then - | term keyword_then - ; - -do : term - | keyword_do_cond - ; - -if_tail : opt_else - | keyword_elsif expr_value then - compstmt - if_tail - { - $$ = new_if(p, cond($2), $4, $5); - } - ; - -opt_else : none - | keyword_else compstmt - { - $$ = $2; - } - ; - -for_var : lhs - { - $$ = list1(list1($1)); - } - | mlhs - ; - -f_marg : f_norm_arg - { - $$ = new_arg(p, $1); - } - | tLPAREN f_margs rparen - { - $$ = new_masgn(p, $2, 0); - } - ; - -f_marg_list : f_marg - { - $$ = list1($1); - } - | f_marg_list ',' f_marg - { - $$ = push($1, $3); - } - ; - -f_margs : f_marg_list - { - $$ = list3($1,0,0); - } - | f_marg_list ',' tSTAR f_norm_arg - { - $$ = list3($1, new_arg(p, $4), 0); - } - | f_marg_list ',' tSTAR f_norm_arg ',' f_marg_list - { - $$ = list3($1, new_arg(p, $4), $6); - } - | f_marg_list ',' tSTAR - { - $$ = list3($1, (node*)-1, 0); - } - | f_marg_list ',' tSTAR ',' f_marg_list - { - $$ = list3($1, (node*)-1, $5); - } - | tSTAR f_norm_arg - { - $$ = list3(0, new_arg(p, $2), 0); - } - | tSTAR f_norm_arg ',' f_marg_list - { - $$ = list3(0, new_arg(p, $2), $4); - } - | tSTAR - { - $$ = list3(0, (node*)-1, 0); - } - | tSTAR ',' f_marg_list - { - $$ = list3(0, (node*)-1, $3); - } - ; - -block_param : f_arg ',' f_block_optarg ',' f_rest_arg opt_f_block_arg - { - $$ = new_args(p, $1, $3, $5, 0, $6); - } - | f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, $1, $3, $5, $7, $8); - } - | f_arg ',' f_block_optarg opt_f_block_arg - { - $$ = new_args(p, $1, $3, 0, 0, $4); - } - | f_arg ',' f_block_optarg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, $1, $3, 0, $5, $6); - } - | f_arg ',' f_rest_arg opt_f_block_arg - { - $$ = new_args(p, $1, 0, $3, 0, $4); - } - | f_arg ',' - { - $$ = new_args(p, $1, 0, 0, 0, 0); - } - | f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, $1, 0, $3, $5, $6); - } - | f_arg opt_f_block_arg - { - $$ = new_args(p, $1, 0, 0, 0, $2); - } - | f_block_optarg ',' f_rest_arg opt_f_block_arg - { - $$ = new_args(p, 0, $1, $3, 0, $4); - } - | f_block_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, 0, $1, $3, $5, $6); - } - | f_block_optarg opt_f_block_arg - { - $$ = new_args(p, 0, $1, 0, 0, $2); - } - | f_block_optarg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, 0, $1, 0, $3, $4); - } - | f_rest_arg opt_f_block_arg - { - $$ = new_args(p, 0, 0, $1, 0, $2); - } - | f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, 0, 0, $1, $3, $4); - } - | f_block_arg - { - $$ = new_args(p, 0, 0, 0, 0, $1); - } - ; - -opt_block_param : none - | block_param_def - { - p->cmd_start = TRUE; - $$ = $1; - } - ; - -block_param_def : '|' opt_bv_decl '|' - { - $$ = 0; - } - | tOROP - { - $$ = 0; - } - | '|' block_param opt_bv_decl '|' - { - $$ = $2; - } - ; - - -opt_bv_decl : opt_nl - { - $$ = 0; - } - | opt_nl ';' bv_decls opt_nl - { - $$ = 0; - } - ; - -bv_decls : bvar - | bv_decls ',' bvar - ; - -bvar : tIDENTIFIER - { - local_add_f(p, $1); - new_bv(p, $1); - } - | f_bad_arg - ; - -f_larglist : '(' f_args opt_bv_decl ')' - { - $$ = $2; - } - | f_args - { - $$ = $1; - } - ; - -lambda_body : tLAMBEG compstmt '}' - { - $$ = $2; - } - | keyword_do_LAMBDA compstmt keyword_end - { - $$ = $2; - } - ; - -do_block : keyword_do_block - { - local_nest(p); - } - opt_block_param - compstmt - keyword_end - { - $$ = new_block(p,$3,$4); - local_unnest(p); - } - ; - -block_call : command do_block - { - if ($1->car == (node*)NODE_YIELD) { - yyerror(p, "block given to yield"); - } - else { - call_with_block(p, $1, $2); - } - $$ = $1; - } - | block_call call_op2 operation2 opt_paren_args - { - $$ = new_call(p, $1, $3, $4, $2); - } - | block_call call_op2 operation2 opt_paren_args brace_block - { - $$ = new_call(p, $1, $3, $4, $2); - call_with_block(p, $$, $5); - } - | block_call call_op2 operation2 command_args do_block - { - $$ = new_call(p, $1, $3, $4, $2); - call_with_block(p, $$, $5); - } - ; - -method_call : operation paren_args - { - $$ = new_fcall(p, $1, $2); - } - | primary_value call_op operation2 opt_paren_args - { - $$ = new_call(p, $1, $3, $4, $2); - } - | primary_value tCOLON2 operation2 paren_args - { - $$ = new_call(p, $1, $3, $4, tCOLON2); - } - | primary_value tCOLON2 operation3 - { - $$ = new_call(p, $1, $3, 0, tCOLON2); - } - | primary_value call_op paren_args - { - $$ = new_call(p, $1, intern("call",4), $3, $2); - } - | primary_value tCOLON2 paren_args - { - $$ = new_call(p, $1, intern("call",4), $3, tCOLON2); - } - | keyword_super paren_args - { - $$ = new_super(p, $2); - } - | keyword_super - { - $$ = new_zsuper(p); - } - | primary_value '[' opt_call_args rbracket - { - $$ = new_call(p, $1, intern("[]",2), $3, '.'); - } - ; - -brace_block : '{' - { - local_nest(p); - $<num>$ = p->lineno; - } - opt_block_param - compstmt '}' - { - $$ = new_block(p,$3,$4); - SET_LINENO($$, $<num>2); - local_unnest(p); - } - | keyword_do - { - local_nest(p); - $<num>$ = p->lineno; - } - opt_block_param - compstmt keyword_end - { - $$ = new_block(p,$3,$4); - SET_LINENO($$, $<num>2); - local_unnest(p); - } - ; - -case_body : keyword_when args then - compstmt - cases - { - $$ = cons(cons($2, $4), $5); - } - ; - -cases : opt_else - { - if ($1) { - $$ = cons(cons(0, $1), 0); - } - else { - $$ = 0; - } - } - | case_body - ; - -opt_rescue : keyword_rescue exc_list exc_var then - compstmt - opt_rescue - { - $$ = list1(list3($2, $3, $5)); - if ($6) $$ = append($$, $6); - } - | none - ; - -exc_list : arg - { - $$ = list1($1); - } - | mrhs - | none - ; - -exc_var : tASSOC lhs - { - $$ = $2; - } - | none - ; - -opt_ensure : keyword_ensure compstmt - { - $$ = $2; - } - | none - ; - -literal : numeric - | symbol - | words - | symbols - ; - -string : tCHAR - | tSTRING - | tSTRING_BEG tSTRING - { - $$ = $2; - } - | tSTRING_BEG string_rep tSTRING - { - $$ = new_dstr(p, push($2, $3)); - } - ; - -string_rep : string_interp - | string_rep string_interp - { - $$ = append($1, $2); - } - ; - -string_interp : tSTRING_MID - { - $$ = list1($1); - } - | tSTRING_PART - { - $<nd>$ = p->lex_strterm; - p->lex_strterm = NULL; - } - compstmt - '}' - { - p->lex_strterm = $<nd>2; - $$ = list2($1, $3); - } - | tLITERAL_DELIM - { - $$ = list1(new_literal_delim(p)); - } - | tHD_LITERAL_DELIM heredoc_bodies - { - $$ = list1(new_literal_delim(p)); - } - ; - -xstring : tXSTRING_BEG tXSTRING - { - $$ = $2; - } - | tXSTRING_BEG string_rep tXSTRING - { - $$ = new_dxstr(p, push($2, $3)); - } - ; - -regexp : tREGEXP_BEG tREGEXP - { - $$ = $2; - } - | tREGEXP_BEG string_rep tREGEXP - { - $$ = new_dregx(p, $2, $3); - } - ; - -heredoc : tHEREDOC_BEG - ; - -heredoc_bodies : heredoc_body - | heredoc_bodies heredoc_body - ; - -heredoc_body : tHEREDOC_END - { - parser_heredoc_info * inf = parsing_heredoc_inf(p); - inf->doc = push(inf->doc, new_str(p, "", 0)); - heredoc_end(p); - } - | heredoc_string_rep tHEREDOC_END - { - heredoc_end(p); - } - ; - -heredoc_string_rep : heredoc_string_interp - | heredoc_string_rep heredoc_string_interp - ; - -heredoc_string_interp : tHD_STRING_MID - { - parser_heredoc_info * inf = parsing_heredoc_inf(p); - inf->doc = push(inf->doc, $1); - heredoc_treat_nextline(p); - } - | tHD_STRING_PART - { - $<nd>$ = p->lex_strterm; - p->lex_strterm = NULL; - } - compstmt - '}' - { - parser_heredoc_info * inf = parsing_heredoc_inf(p); - p->lex_strterm = $<nd>2; - inf->doc = push(push(inf->doc, $1), $3); - } - ; - -words : tWORDS_BEG tSTRING - { - $$ = new_words(p, list1($2)); - } - | tWORDS_BEG string_rep tSTRING - { - $$ = new_words(p, push($2, $3)); - } - ; - - -symbol : basic_symbol - { - $$ = new_sym(p, $1); - } - | tSYMBEG tSTRING_BEG string_rep tSTRING - { - p->lstate = EXPR_END; - $$ = new_dsym(p, push($3, $4)); - } - ; - -basic_symbol : tSYMBEG sym - { - p->lstate = EXPR_END; - $$ = $2; - } - ; - -sym : fname - | tIVAR - | tGVAR - | tCVAR - | tSTRING - { - $$ = new_strsym(p, $1); - } - | tSTRING_BEG tSTRING - { - $$ = new_strsym(p, $2); - } - ; - -symbols : tSYMBOLS_BEG tSTRING - { - $$ = new_symbols(p, list1($2)); - } - | tSYMBOLS_BEG string_rep tSTRING - { - $$ = new_symbols(p, push($2, $3)); - } - ; - -numeric : tINTEGER - | tFLOAT - | tUMINUS_NUM tINTEGER %prec tLOWEST - { - $$ = negate_lit(p, $2); - } - | tUMINUS_NUM tFLOAT %prec tLOWEST - { - $$ = negate_lit(p, $2); - } - ; - -variable : tIDENTIFIER - { - $$ = new_lvar(p, $1); - } - | tIVAR - { - $$ = new_ivar(p, $1); - } - | tGVAR - { - $$ = new_gvar(p, $1); - } - | tCVAR - { - $$ = new_cvar(p, $1); - } - | tCONSTANT - { - $$ = new_const(p, $1); - } - ; - -var_lhs : variable - { - assignable(p, $1); - } - ; - -var_ref : variable - { - $$ = var_reference(p, $1); - } - | keyword_nil - { - $$ = new_nil(p); - } - | keyword_self - { - $$ = new_self(p); - } - | keyword_true - { - $$ = new_true(p); - } - | keyword_false - { - $$ = new_false(p); - } - | keyword__FILE__ - { - const char *fn = p->filename; - if (!fn) { - fn = "(null)"; - } - $$ = new_str(p, fn, strlen(fn)); - } - | keyword__LINE__ - { - char buf[16]; - - snprintf(buf, sizeof(buf), "%d", p->lineno); - $$ = new_int(p, buf, 10); - } - | keyword__ENCODING__ - { -#ifdef MRB_UTF8_STRING - const char *enc = "UTF-8"; -#else - const char *enc = "ASCII-8BIT"; -#endif - $$ = new_str(p, enc, strlen(enc)); - } - ; - -backref : tNTH_REF - | tBACK_REF - ; - -superclass : /* term */ - { - $$ = 0; - } - | '<' - { - p->lstate = EXPR_BEG; - p->cmd_start = TRUE; - } - expr_value term - { - $$ = $3; - } /* - | error term - { - yyerrok; - $$ = 0; - } */ - ; - -f_arglist : '(' f_args rparen - { - $$ = $2; - p->lstate = EXPR_BEG; - p->cmd_start = TRUE; - } - | f_args term - { - $$ = $1; - } - ; - -f_args : f_arg ',' f_optarg ',' f_rest_arg opt_f_block_arg - { - $$ = new_args(p, $1, $3, $5, 0, $6); - } - | f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, $1, $3, $5, $7, $8); - } - | f_arg ',' f_optarg opt_f_block_arg - { - $$ = new_args(p, $1, $3, 0, 0, $4); - } - | f_arg ',' f_optarg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, $1, $3, 0, $5, $6); - } - | f_arg ',' f_rest_arg opt_f_block_arg - { - $$ = new_args(p, $1, 0, $3, 0, $4); - } - | f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, $1, 0, $3, $5, $6); - } - | f_arg opt_f_block_arg - { - $$ = new_args(p, $1, 0, 0, 0, $2); - } - | f_optarg ',' f_rest_arg opt_f_block_arg - { - $$ = new_args(p, 0, $1, $3, 0, $4); - } - | f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, 0, $1, $3, $5, $6); - } - | f_optarg opt_f_block_arg - { - $$ = new_args(p, 0, $1, 0, 0, $2); - } - | f_optarg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, 0, $1, 0, $3, $4); - } - | f_rest_arg opt_f_block_arg - { - $$ = new_args(p, 0, 0, $1, 0, $2); - } - | f_rest_arg ',' f_arg opt_f_block_arg - { - $$ = new_args(p, 0, 0, $1, $3, $4); - } - | f_block_arg - { - $$ = new_args(p, 0, 0, 0, 0, $1); - } - | /* none */ - { - local_add_f(p, 0); - $$ = new_args(p, 0, 0, 0, 0, 0); - } - ; - -f_bad_arg : tCONSTANT - { - yyerror(p, "formal argument cannot be a constant"); - $$ = 0; - } - | tIVAR - { - yyerror(p, "formal argument cannot be an instance variable"); - $$ = 0; - } - | tGVAR - { - yyerror(p, "formal argument cannot be a global variable"); - $$ = 0; - } - | tCVAR - { - yyerror(p, "formal argument cannot be a class variable"); - $$ = 0; - } - ; - -f_norm_arg : f_bad_arg - { - $$ = 0; - } - | tIDENTIFIER - { - local_add_f(p, $1); - $$ = $1; - } - ; - -f_arg_item : f_norm_arg - { - $$ = new_arg(p, $1); - } - | tLPAREN f_margs rparen - { - $$ = new_masgn(p, $2, 0); - } - ; - -f_arg : f_arg_item - { - $$ = list1($1); - } - | f_arg ',' f_arg_item - { - $$ = push($1, $3); - } - ; - -f_opt_asgn : tIDENTIFIER '=' - { - local_add_f(p, $1); - $$ = $1; - } - ; - -f_opt : f_opt_asgn arg - { - void_expr_error(p, $2); - $$ = cons(nsym($1), $2); - } - ; - -f_block_opt : f_opt_asgn primary_value - { - void_expr_error(p, $2); - $$ = cons(nsym($1), $2); - } - ; - -f_block_optarg : f_block_opt - { - $$ = list1($1); - } - | f_block_optarg ',' f_block_opt - { - $$ = push($1, $3); - } - ; - -f_optarg : f_opt - { - $$ = list1($1); - } - | f_optarg ',' f_opt - { - $$ = push($1, $3); - } - ; - -restarg_mark : '*' - | tSTAR - ; - -f_rest_arg : restarg_mark tIDENTIFIER - { - local_add_f(p, $2); - $$ = $2; - } - | restarg_mark - { - local_add_f(p, 0); - $$ = -1; - } - ; - -blkarg_mark : '&' - | tAMPER - ; - -f_block_arg : blkarg_mark tIDENTIFIER - { - local_add_f(p, $2); - $$ = $2; - } - ; - -opt_f_block_arg : ',' f_block_arg - { - $$ = $2; - } - | none - { - local_add_f(p, 0); - $$ = 0; - } - ; - -singleton : var_ref - { - $$ = $1; - if (!$$) $$ = new_nil(p); - } - | '(' {p->lstate = EXPR_BEG;} expr rparen - { - if ($3 == 0) { - yyerror(p, "can't define singleton method for ()."); - } - else { - switch ((enum node_type)intn($3->car)) { - case NODE_STR: - case NODE_DSTR: - case NODE_XSTR: - case NODE_DXSTR: - case NODE_DREGX: - case NODE_MATCH: - case NODE_FLOAT: - case NODE_ARRAY: - case NODE_HEREDOC: - yyerror(p, "can't define singleton method for literals"); - default: - break; - } - } - $$ = $3; - } - ; - -assoc_list : none - | assocs trailer - { - $$ = $1; - } - ; - -assocs : assoc - { - $$ = list1($1); - NODE_LINENO($$, $1); - } - | assocs ',' assoc - { - $$ = push($1, $3); - } - ; - -assoc : arg tASSOC arg - { - void_expr_error(p, $1); - void_expr_error(p, $3); - $$ = cons($1, $3); - } - | tLABEL arg - { - void_expr_error(p, $2); - $$ = cons(new_sym(p, $1), $2); - } - | tLABEL_END arg - { - void_expr_error(p, $2); - $$ = cons(new_sym(p, new_strsym(p, $1)), $2); - } - | tSTRING_BEG tLABEL_END arg - { - void_expr_error(p, $3); - $$ = cons(new_sym(p, new_strsym(p, $2)), $3); - } - | tSTRING_BEG string_rep tLABEL_END arg - { - void_expr_error(p, $4); - $$ = cons(new_dsym(p, push($2, $3)), $4); - } - ; - -operation : tIDENTIFIER - | tCONSTANT - | tFID - ; - -operation2 : tIDENTIFIER - | tCONSTANT - | tFID - | op - ; - -operation3 : tIDENTIFIER - | tFID - | op - ; - -dot_or_colon : '.' - | tCOLON2 - ; - -call_op : '.' - { - $$ = '.'; - } - | tANDDOT - { - $$ = 0; - } - ; - -call_op2 : call_op - | tCOLON2 - { - $$ = tCOLON2; - } - ; - -opt_terms : /* none */ - | terms - ; - -opt_nl : /* none */ - | nl - ; - -rparen : opt_nl ')' - ; - -rbracket : opt_nl ']' - ; - -trailer : /* none */ - | nl - | comma - ; - -term : ';' {yyerrok;} - | nl - | heredoc_body - ; - -nl : '\n' - { - p->lineno++; - p->column = 0; - } - ; - -terms : term - | terms term - ; - -none : /* none */ - { - $$ = 0; - } - ; -%% -#define pylval (*((YYSTYPE*)(p->ylval))) - -static void -yyerror(parser_state *p, const char *s) -{ - char* c; - size_t n; - - if (! p->capture_errors) { -#ifndef MRB_DISABLE_STDIO - if (p->filename) { - fprintf(stderr, "%s:%d:%d: %s\n", p->filename, p->lineno, p->column, s); - } - else { - fprintf(stderr, "line %d:%d: %s\n", p->lineno, p->column, s); - } -#endif - } - else if (p->nerr < sizeof(p->error_buffer) / sizeof(p->error_buffer[0])) { - n = strlen(s); - c = (char *)parser_palloc(p, n + 1); - memcpy(c, s, n + 1); - p->error_buffer[p->nerr].message = c; - p->error_buffer[p->nerr].lineno = p->lineno; - p->error_buffer[p->nerr].column = p->column; - } - p->nerr++; -} - -static void -yyerror_i(parser_state *p, const char *fmt, int i) -{ - char buf[256]; - - snprintf(buf, sizeof(buf), fmt, i); - yyerror(p, buf); -} - -static void -yywarn(parser_state *p, const char *s) -{ - char* c; - size_t n; - - if (! p->capture_errors) { -#ifndef MRB_DISABLE_STDIO - if (p->filename) { - fprintf(stderr, "%s:%d:%d: %s\n", p->filename, p->lineno, p->column, s); - } - else { - fprintf(stderr, "line %d:%d: %s\n", p->lineno, p->column, s); - } -#endif - } - else if (p->nwarn < sizeof(p->warn_buffer) / sizeof(p->warn_buffer[0])) { - n = strlen(s); - c = (char *)parser_palloc(p, n + 1); - memcpy(c, s, n + 1); - p->warn_buffer[p->nwarn].message = c; - p->warn_buffer[p->nwarn].lineno = p->lineno; - p->warn_buffer[p->nwarn].column = p->column; - } - p->nwarn++; -} - -static void -yywarning(parser_state *p, const char *s) -{ - yywarn(p, s); -} - -static void -yywarning_s(parser_state *p, const char *fmt, const char *s) -{ - char buf[256]; - - snprintf(buf, sizeof(buf), fmt, s); - yywarning(p, buf); -} - -static void -backref_error(parser_state *p, node *n) -{ - int c; - - c = (int)(intptr_t)n->car; - - if (c == NODE_NTH_REF) { - yyerror_i(p, "can't set variable $%" MRB_PRId, (mrb_int)(intptr_t)n->cdr); - } - else if (c == NODE_BACK_REF) { - yyerror_i(p, "can't set variable $%c", (int)(intptr_t)n->cdr); - } - else { - mrb_bug(p->mrb, "Internal error in backref_error() : n=>car == %S", mrb_fixnum_value(c)); - } -} - -static void -void_expr_error(parser_state *p, node *n) -{ - int c; - - if (n == NULL) return; - c = (int)(intptr_t)n->car; - switch (c) { - case NODE_BREAK: - case NODE_RETURN: - case NODE_NEXT: - case NODE_REDO: - case NODE_RETRY: - yyerror(p, "void value expression"); - break; - case NODE_AND: - case NODE_OR: - void_expr_error(p, n->cdr->car); - void_expr_error(p, n->cdr->cdr); - break; - case NODE_BEGIN: - if (n->cdr) { - while (n->cdr) { - n = n->cdr; - } - void_expr_error(p, n->car); - } - break; - default: - break; - } -} - -static void pushback(parser_state *p, int c); -static mrb_bool peeks(parser_state *p, const char *s); -static mrb_bool skips(parser_state *p, const char *s); - -static inline int -nextc(parser_state *p) -{ - int c; - - if (p->pb) { - node *tmp; - - c = (int)(intptr_t)p->pb->car; - tmp = p->pb; - p->pb = p->pb->cdr; - cons_free(tmp); - } - else { -#ifndef MRB_DISABLE_STDIO - if (p->f) { - if (feof(p->f)) goto eof; - c = fgetc(p->f); - if (c == EOF) goto eof; - } - else -#endif - if (!p->s || p->s >= p->send) { - goto eof; - } - else { - c = (unsigned char)*p->s++; - } - } - if (c >= 0) { - p->column++; - } - if (c == '\r') { - c = nextc(p); - if (c != '\n') { - pushback(p, c); - return '\r'; - } - return c; - } - return c; - - eof: - if (!p->cxt) return -1; - else { - if (p->cxt->partial_hook(p) < 0) - return -1; /* end of program(s) */ - return -2; /* end of a file in the program files */ - } -} - -static void -pushback(parser_state *p, int c) -{ - if (c >= 0) { - p->column--; - } - p->pb = cons((node*)(intptr_t)c, p->pb); -} - -static void -skip(parser_state *p, char term) -{ - int c; - - for (;;) { - c = nextc(p); - if (c < 0) break; - if (c == term) break; - } -} - -static int -peekc_n(parser_state *p, int n) -{ - node *list = 0; - int c0; - - do { - c0 = nextc(p); - if (c0 == -1) return c0; /* do not skip partial EOF */ - if (c0 >= 0) --p->column; - list = push(list, (node*)(intptr_t)c0); - } while(n--); - if (p->pb) { - p->pb = append((node*)list, p->pb); - } - else { - p->pb = list; - } - return c0; -} - -static mrb_bool -peek_n(parser_state *p, int c, int n) -{ - return peekc_n(p, n) == c && c >= 0; -} -#define peek(p,c) peek_n((p), (c), 0) - -static mrb_bool -peeks(parser_state *p, const char *s) -{ - size_t len = strlen(s); - -#ifndef MRB_DISABLE_STDIO - if (p->f) { - int n = 0; - while (*s) { - if (!peek_n(p, *s++, n++)) return FALSE; - } - return TRUE; - } - else -#endif - if (p->s && p->s + len <= p->send) { - if (memcmp(p->s, s, len) == 0) return TRUE; - } - return FALSE; -} - -static mrb_bool -skips(parser_state *p, const char *s) -{ - int c; - - for (;;) { - /* skip until first char */ - for (;;) { - c = nextc(p); - if (c < 0) return FALSE; - if (c == '\n') { - p->lineno++; - p->column = 0; - } - if (c == *s) break; - } - s++; - if (peeks(p, s)) { - size_t len = strlen(s); - - while (len--) { - if (nextc(p) == '\n') { - p->lineno++; - p->column = 0; - } - } - return TRUE; - } - else{ - s--; - } - } - return FALSE; -} - - -static int -newtok(parser_state *p) -{ - if (p->tokbuf != p->buf) { - mrb_free(p->mrb, p->tokbuf); - p->tokbuf = p->buf; - p->tsiz = MRB_PARSER_TOKBUF_SIZE; - } - p->tidx = 0; - return p->column - 1; -} - -static void -tokadd(parser_state *p, int32_t c) -{ - char utf8[4]; - int i, len; - - /* mrb_assert(-0x10FFFF <= c && c <= 0xFF); */ - if (c >= 0) { - /* Single byte from source or non-Unicode escape */ - utf8[0] = (char)c; - len = 1; - } - else { - /* Unicode character */ - c = -c; - if (c < 0x80) { - utf8[0] = (char)c; - len = 1; - } - else if (c < 0x800) { - utf8[0] = (char)(0xC0 | (c >> 6)); - utf8[1] = (char)(0x80 | (c & 0x3F)); - len = 2; - } - else if (c < 0x10000) { - utf8[0] = (char)(0xE0 | (c >> 12) ); - utf8[1] = (char)(0x80 | ((c >> 6) & 0x3F)); - utf8[2] = (char)(0x80 | ( c & 0x3F)); - len = 3; - } - else { - utf8[0] = (char)(0xF0 | (c >> 18) ); - utf8[1] = (char)(0x80 | ((c >> 12) & 0x3F)); - utf8[2] = (char)(0x80 | ((c >> 6) & 0x3F)); - utf8[3] = (char)(0x80 | ( c & 0x3F)); - len = 4; - } - } - if (p->tidx+len >= p->tsiz) { - if (p->tsiz >= MRB_PARSER_TOKBUF_MAX) { - p->tidx += len; - return; - } - p->tsiz *= 2; - if (p->tokbuf == p->buf) { - p->tokbuf = (char*)mrb_malloc(p->mrb, p->tsiz); - memcpy(p->tokbuf, p->buf, MRB_PARSER_TOKBUF_SIZE); - } - else { - p->tokbuf = (char*)mrb_realloc(p->mrb, p->tokbuf, p->tsiz); - } - } - for (i = 0; i < len; i++) { - p->tokbuf[p->tidx++] = utf8[i]; - } -} - -static int -toklast(parser_state *p) -{ - return p->tokbuf[p->tidx-1]; -} - -static void -tokfix(parser_state *p) -{ - if (p->tidx >= MRB_PARSER_TOKBUF_MAX) { - p->tidx = MRB_PARSER_TOKBUF_MAX-1; - yyerror(p, "string too long (truncated)"); - } - p->tokbuf[p->tidx] = '\0'; -} - -static const char* -tok(parser_state *p) -{ - return p->tokbuf; -} - -static int -toklen(parser_state *p) -{ - return p->tidx; -} - -#define IS_ARG() (p->lstate == EXPR_ARG || p->lstate == EXPR_CMDARG) -#define IS_END() (p->lstate == EXPR_END || p->lstate == EXPR_ENDARG || p->lstate == EXPR_ENDFN) -#define IS_BEG() (p->lstate == EXPR_BEG || p->lstate == EXPR_MID || p->lstate == EXPR_VALUE || p->lstate == EXPR_CLASS) -#define IS_SPCARG(c) (IS_ARG() && space_seen && !ISSPACE(c)) -#define IS_LABEL_POSSIBLE() ((p->lstate == EXPR_BEG && !cmd_state) || IS_ARG()) -#define IS_LABEL_SUFFIX(n) (peek_n(p, ':',(n)) && !peek_n(p, ':', (n)+1)) - -static int32_t -scan_oct(const int *start, int len, int *retlen) -{ - const int *s = start; - int32_t retval = 0; - - /* mrb_assert(len <= 3) */ - while (len-- && *s >= '0' && *s <= '7') { - retval <<= 3; - retval |= *s++ - '0'; - } - *retlen = (int)(s - start); - - return retval; -} - -static int32_t -scan_hex(parser_state *p, const int *start, int len, int *retlen) -{ - static const char hexdigit[] = "0123456789abcdef0123456789ABCDEF"; - const int *s = start; - uint32_t retval = 0; - char *tmp; - - /* mrb_assert(len <= 8) */ - while (len-- && *s && (tmp = (char*)strchr(hexdigit, *s))) { - retval <<= 4; - retval |= (tmp - hexdigit) & 15; - s++; - } - *retlen = (int)(s - start); - - return (int32_t)retval; -} - -static int32_t -read_escape_unicode(parser_state *p, int limit) -{ - int buf[9]; - int i; - int32_t hex; - - /* Look for opening brace */ - i = 0; - buf[0] = nextc(p); - if (buf[0] < 0) { - eof: - yyerror(p, "invalid escape character syntax"); - return -1; - } - if (ISXDIGIT(buf[0])) { - /* \uxxxx form */ - for (i=1; i<limit; i++) { - buf[i] = nextc(p); - if (buf[i] < 0) goto eof; - if (!ISXDIGIT(buf[i])) { - pushback(p, buf[i]); - break; - } - } - } - else { - pushback(p, buf[0]); - } - hex = scan_hex(p, buf, i, &i); - if (i == 0 || hex > 0x10FFFF || (hex & 0xFFFFF800) == 0xD800) { - yyerror(p, "invalid Unicode code point"); - return -1; - } - return hex; -} - -/* Return negative to indicate Unicode code point */ -static int32_t -read_escape(parser_state *p) -{ - int32_t c; - - switch (c = nextc(p)) { - case '\\':/* Backslash */ - return c; - - case 'n':/* newline */ - return '\n'; - - case 't':/* horizontal tab */ - return '\t'; - - case 'r':/* carriage-return */ - return '\r'; - - case 'f':/* form-feed */ - return '\f'; - - case 'v':/* vertical tab */ - return '\13'; - - case 'a':/* alarm(bell) */ - return '\007'; - - case 'e':/* escape */ - return 033; - - case '0': case '1': case '2': case '3': /* octal constant */ - case '4': case '5': case '6': case '7': - { - int buf[3]; - int i; - - buf[0] = c; - for (i=1; i<3; i++) { - buf[i] = nextc(p); - if (buf[i] < 0) goto eof; - if (buf[i] < '0' || '7' < buf[i]) { - pushback(p, buf[i]); - break; - } - } - c = scan_oct(buf, i, &i); - } - return c; - - case 'x': /* hex constant */ - { - int buf[2]; - int i; - - for (i=0; i<2; i++) { - buf[i] = nextc(p); - if (buf[i] < 0) goto eof; - if (!ISXDIGIT(buf[i])) { - pushback(p, buf[i]); - break; - } - } - if (i == 0) { - yyerror(p, "invalid hex escape"); - return -1; - } - return scan_hex(p, buf, i, &i); - } - - case 'u': /* Unicode */ - if (peek(p, '{')) { - /* \u{xxxxxxxx} form */ - nextc(p); - c = read_escape_unicode(p, 8); - if (c < 0) return 0; - if (nextc(p) != '}') goto eof; - } - else { - c = read_escape_unicode(p, 4); - if (c < 0) return 0; - } - return -c; - - case 'b':/* backspace */ - return '\010'; - - case 's':/* space */ - return ' '; - - case 'M': - if ((c = nextc(p)) != '-') { - yyerror(p, "Invalid escape character syntax"); - pushback(p, c); - return '\0'; - } - if ((c = nextc(p)) == '\\') { - return read_escape(p) | 0x80; - } - else if (c < 0) goto eof; - else { - return ((c & 0xff) | 0x80); - } - - case 'C': - if ((c = nextc(p)) != '-') { - yyerror(p, "Invalid escape character syntax"); - pushback(p, c); - return '\0'; - } - case 'c': - if ((c = nextc(p))== '\\') { - c = read_escape(p); - } - else if (c == '?') - return 0177; - else if (c < 0) goto eof; - return c & 0x9f; - - eof: - case -1: - case -2: /* end of a file */ - yyerror(p, "Invalid escape character syntax"); - return '\0'; - - default: - return c; - } -} - -static int -parse_string(parser_state *p) -{ - int c; - string_type type = (string_type)(intptr_t)p->lex_strterm->car; - int nest_level = intn(p->lex_strterm->cdr->car); - int beg = intn(p->lex_strterm->cdr->cdr->car); - int end = intn(p->lex_strterm->cdr->cdr->cdr); - parser_heredoc_info *hinf = (type & STR_FUNC_HEREDOC) ? parsing_heredoc_inf(p) : NULL; - int cmd_state = p->cmd_start; - - if (beg == 0) beg = -3; /* should never happen */ - if (end == 0) end = -3; - newtok(p); - while ((c = nextc(p)) != end || nest_level != 0) { - if (hinf && (c == '\n' || c < 0)) { - mrb_bool line_head; - tokadd(p, '\n'); - tokfix(p); - p->lineno++; - p->column = 0; - line_head = hinf->line_head; - hinf->line_head = TRUE; - if (line_head) { - /* check whether end of heredoc */ - const char *s = tok(p); - int len = toklen(p); - if (hinf->allow_indent) { - while (ISSPACE(*s) && len > 0) { - ++s; - --len; - } - } - if ((len-1 == hinf->term_len) && (strncmp(s, hinf->term, len-1) == 0)) { - if (c < 0) { - p->parsing_heredoc = NULL; - } - else { - return tHEREDOC_END; - } - } - } - if (c < 0) { - char buf[256]; - snprintf(buf, sizeof(buf), "can't find heredoc delimiter \"%s\" anywhere before EOF", hinf->term); - yyerror(p, buf); - return 0; - } - pylval.nd = new_str(p, tok(p), toklen(p)); - return tHD_STRING_MID; - } - if (c < 0) { - yyerror(p, "unterminated string meets end of file"); - return 0; - } - else if (c == beg) { - nest_level++; - p->lex_strterm->cdr->car = (node*)(intptr_t)nest_level; - } - else if (c == end) { - nest_level--; - p->lex_strterm->cdr->car = (node*)(intptr_t)nest_level; - } - else if (c == '\\') { - c = nextc(p); - if (type & STR_FUNC_EXPAND) { - if (c == end || c == beg) { - tokadd(p, c); - } - else if (c == '\n') { - p->lineno++; - p->column = 0; - if (type & STR_FUNC_ARRAY) { - tokadd(p, '\n'); - } - } - else if (type & STR_FUNC_REGEXP) { - tokadd(p, '\\'); - tokadd(p, c); - } - else if (c == 'u' && peek(p, '{')) { - /* \u{xxxx xxxx xxxx} form */ - nextc(p); - while (1) { - do c = nextc(p); while (ISSPACE(c)); - if (c == '}') break; - pushback(p, c); - c = read_escape_unicode(p, 8); - if (c < 0) break; - tokadd(p, -c); - } - if (hinf) - hinf->line_head = FALSE; - } - else { - pushback(p, c); - tokadd(p, read_escape(p)); - if (hinf) - hinf->line_head = FALSE; - } - } - else { - if (c != beg && c != end) { - if (c == '\n') { - p->lineno++; - p->column = 0; - } - if (!(c == '\\' || ((type & STR_FUNC_ARRAY) && ISSPACE(c)))) { - tokadd(p, '\\'); - } - } - tokadd(p, c); - } - continue; - } - else if ((c == '#') && (type & STR_FUNC_EXPAND)) { - c = nextc(p); - if (c == '{') { - tokfix(p); - p->lstate = EXPR_BEG; - p->cmd_start = TRUE; - pylval.nd = new_str(p, tok(p), toklen(p)); - if (hinf) { - hinf->line_head = FALSE; - return tHD_STRING_PART; - } - return tSTRING_PART; - } - tokadd(p, '#'); - pushback(p, c); - continue; - } - if ((type & STR_FUNC_ARRAY) && ISSPACE(c)) { - if (toklen(p) == 0) { - do { - if (c == '\n') { - p->lineno++; - p->column = 0; - heredoc_treat_nextline(p); - if (p->parsing_heredoc != NULL) { - return tHD_LITERAL_DELIM; - } - } - c = nextc(p); - } while (ISSPACE(c)); - pushback(p, c); - return tLITERAL_DELIM; - } - else { - pushback(p, c); - tokfix(p); - pylval.nd = new_str(p, tok(p), toklen(p)); - return tSTRING_MID; - } - } - if (c == '\n') { - p->lineno++; - p->column = 0; - } - tokadd(p, c); - } - - tokfix(p); - p->lstate = EXPR_END; - end_strterm(p); - - if (type & STR_FUNC_XQUOTE) { - pylval.nd = new_xstr(p, tok(p), toklen(p)); - return tXSTRING; - } - - if (type & STR_FUNC_REGEXP) { - int f = 0; - int re_opt; - char *s = strndup(tok(p), toklen(p)); - char flags[3]; - char *flag = flags; - char enc = '\0'; - char *encp; - char *dup; - - newtok(p); - while (re_opt = nextc(p), re_opt >= 0 && ISALPHA(re_opt)) { - switch (re_opt) { - case 'i': f |= 1; break; - case 'x': f |= 2; break; - case 'm': f |= 4; break; - case 'u': f |= 16; break; - case 'n': f |= 32; break; - default: tokadd(p, re_opt); break; - } - } - pushback(p, re_opt); - if (toklen(p)) { - char msg[128]; - tokfix(p); - snprintf(msg, sizeof(msg), "unknown regexp option%s - %s", - toklen(p) > 1 ? "s" : "", tok(p)); - yyerror(p, msg); - } - if (f != 0) { - if (f & 1) *flag++ = 'i'; - if (f & 2) *flag++ = 'x'; - if (f & 4) *flag++ = 'm'; - if (f & 16) enc = 'u'; - if (f & 32) enc = 'n'; - } - if (flag > flags) { - dup = strndup(flags, (size_t)(flag - flags)); - } - else { - dup = NULL; - } - if (enc) { - encp = strndup(&enc, 1); - } - else { - encp = NULL; - } - pylval.nd = new_regx(p, s, dup, encp); - - return tREGEXP; - } - pylval.nd = new_str(p, tok(p), toklen(p)); - if (IS_LABEL_POSSIBLE()) { - if (IS_LABEL_SUFFIX(0)) { - p->lstate = EXPR_BEG; - nextc(p); - return tLABEL_END; - } - } - - return tSTRING; -} - - -static int -heredoc_identifier(parser_state *p) -{ - int c; - int type = str_heredoc; - mrb_bool indent = FALSE; - mrb_bool quote = FALSE; - node *newnode; - parser_heredoc_info *info; - - c = nextc(p); - if (ISSPACE(c) || c == '=') { - pushback(p, c); - return 0; - } - if (c == '-') { - indent = TRUE; - c = nextc(p); - } - if (c == '\'' || c == '"') { - int term = c; - if (c == '\'') - quote = TRUE; - newtok(p); - while ((c = nextc(p)) >= 0 && c != term) { - if (c == '\n') { - c = -1; - break; - } - tokadd(p, c); - } - if (c < 0) { - yyerror(p, "unterminated here document identifier"); - return 0; - } - } - else { - if (c < 0) { - return 0; /* missing here document identifier */ - } - if (! identchar(c)) { - pushback(p, c); - if (indent) pushback(p, '-'); - return 0; - } - newtok(p); - do { - tokadd(p, c); - } while ((c = nextc(p)) >= 0 && identchar(c)); - pushback(p, c); - } - tokfix(p); - newnode = new_heredoc(p); - info = (parser_heredoc_info*)newnode->cdr; - info->term = strndup(tok(p), toklen(p)); - info->term_len = toklen(p); - if (! quote) - type |= STR_FUNC_EXPAND; - info->type = (string_type)type; - info->allow_indent = indent; - info->line_head = TRUE; - info->doc = NULL; - p->heredocs_from_nextline = push(p->heredocs_from_nextline, newnode); - p->lstate = EXPR_END; - - pylval.nd = newnode; - return tHEREDOC_BEG; -} - -static int -arg_ambiguous(parser_state *p) -{ - yywarning(p, "ambiguous first argument; put parentheses or even spaces"); - return 1; -} - -#include "lex.def" - -static int -parser_yylex(parser_state *p) -{ - int32_t c; - int space_seen = 0; - int cmd_state; - enum mrb_lex_state_enum last_state; - int token_column; - - if (p->lex_strterm) { - if (is_strterm_type(p, STR_FUNC_HEREDOC)) { - if (p->parsing_heredoc != NULL) - return parse_string(p); - } - else - return parse_string(p); - } - cmd_state = p->cmd_start; - p->cmd_start = FALSE; - retry: - last_state = p->lstate; - switch (c = nextc(p)) { - case '\004': /* ^D */ - case '\032': /* ^Z */ - case '\0': /* NUL */ - case -1: /* end of script. */ - if (p->heredocs_from_nextline) - goto maybe_heredoc; - return 0; - - /* white spaces */ - case ' ': case '\t': case '\f': case '\r': - case '\13': /* '\v' */ - space_seen = 1; - goto retry; - - case '#': /* it's a comment */ - skip(p, '\n'); - /* fall through */ - case -2: /* end of a file */ - case '\n': - maybe_heredoc: - heredoc_treat_nextline(p); - switch (p->lstate) { - case EXPR_BEG: - case EXPR_FNAME: - case EXPR_DOT: - case EXPR_CLASS: - case EXPR_VALUE: - p->lineno++; - p->column = 0; - if (p->parsing_heredoc != NULL) { - if (p->lex_strterm) { - return parse_string(p); - } - } - goto retry; - default: - break; - } - if (p->parsing_heredoc != NULL) { - return '\n'; - } - while ((c = nextc(p))) { - switch (c) { - case ' ': case '\t': case '\f': case '\r': - case '\13': /* '\v' */ - space_seen = 1; - break; - case '.': - if ((c = nextc(p)) != '.') { - pushback(p, c); - pushback(p, '.'); - goto retry; - } - case -1: /* EOF */ - case -2: /* end of a file */ - goto normal_newline; - default: - pushback(p, c); - goto normal_newline; - } - } - normal_newline: - p->cmd_start = TRUE; - p->lstate = EXPR_BEG; - return '\n'; - - case '*': - if ((c = nextc(p)) == '*') { - if ((c = nextc(p)) == '=') { - pylval.id = intern("**",2); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - c = tPOW; - } - else { - if (c == '=') { - pylval.id = intern_c('*'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - if (IS_SPCARG(c)) { - yywarning(p, "'*' interpreted as argument prefix"); - c = tSTAR; - } - else if (IS_BEG()) { - c = tSTAR; - } - else { - c = '*'; - } - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - return c; - - case '!': - c = nextc(p); - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - if (c == '@') { - return '!'; - } - } - else { - p->lstate = EXPR_BEG; - } - if (c == '=') { - return tNEQ; - } - if (c == '~') { - return tNMATCH; - } - pushback(p, c); - return '!'; - - case '=': - if (p->column == 1) { - static const char begin[] = "begin"; - static const char end[] = "\n=end"; - if (peeks(p, begin)) { - c = peekc_n(p, sizeof(begin)-1); - if (c < 0 || ISSPACE(c)) { - do { - if (!skips(p, end)) { - yyerror(p, "embedded document meets end of file"); - return 0; - } - c = nextc(p); - } while (!(c < 0 || ISSPACE(c))); - if (c != '\n') skip(p, '\n'); - p->lineno++; - p->column = 0; - goto retry; - } - } - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - if ((c = nextc(p)) == '=') { - if ((c = nextc(p)) == '=') { - return tEQQ; - } - pushback(p, c); - return tEQ; - } - if (c == '~') { - return tMATCH; - } - else if (c == '>') { - return tASSOC; - } - pushback(p, c); - return '='; - - case '<': - c = nextc(p); - if (c == '<' && - p->lstate != EXPR_DOT && - p->lstate != EXPR_CLASS && - !IS_END() && - (!IS_ARG() || space_seen)) { - int token = heredoc_identifier(p); - if (token) - return token; - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - if (p->lstate == EXPR_CLASS) { - p->cmd_start = TRUE; - } - } - if (c == '=') { - if ((c = nextc(p)) == '>') { - return tCMP; - } - pushback(p, c); - return tLEQ; - } - if (c == '<') { - if ((c = nextc(p)) == '=') { - pylval.id = intern("<<",2); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - return tLSHFT; - } - pushback(p, c); - return '<'; - - case '>': - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - if ((c = nextc(p)) == '=') { - return tGEQ; - } - if (c == '>') { - if ((c = nextc(p)) == '=') { - pylval.id = intern(">>",2); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - return tRSHFT; - } - pushback(p, c); - return '>'; - - case '"': - p->lex_strterm = new_strterm(p, str_dquote, '"', 0); - return tSTRING_BEG; - - case '\'': - p->lex_strterm = new_strterm(p, str_squote, '\'', 0); - return parse_string(p); - - case '`': - if (p->lstate == EXPR_FNAME) { - p->lstate = EXPR_ENDFN; - return '`'; - } - if (p->lstate == EXPR_DOT) { - if (cmd_state) - p->lstate = EXPR_CMDARG; - else - p->lstate = EXPR_ARG; - return '`'; - } - p->lex_strterm = new_strterm(p, str_xquote, '`', 0); - return tXSTRING_BEG; - - case '?': - if (IS_END()) { - p->lstate = EXPR_VALUE; - return '?'; - } - c = nextc(p); - if (c < 0) { - yyerror(p, "incomplete character syntax"); - return 0; - } - if (ISSPACE(c)) { - if (!IS_ARG()) { - int c2; - switch (c) { - case ' ': - c2 = 's'; - break; - case '\n': - c2 = 'n'; - break; - case '\t': - c2 = 't'; - break; - case '\v': - c2 = 'v'; - break; - case '\r': - c2 = 'r'; - break; - case '\f': - c2 = 'f'; - break; - default: - c2 = 0; - break; - } - if (c2) { - char buf[256]; - snprintf(buf, sizeof(buf), "invalid character syntax; use ?\\%c", c2); - yyerror(p, buf); - } - } - ternary: - pushback(p, c); - p->lstate = EXPR_VALUE; - return '?'; - } - newtok(p); - /* need support UTF-8 if configured */ - if ((isalnum(c) || c == '_')) { - int c2 = nextc(p); - pushback(p, c2); - if ((isalnum(c2) || c2 == '_')) { - goto ternary; - } - } - if (c == '\\') { - c = read_escape(p); - tokadd(p, c); - } - else { - tokadd(p, c); - } - tokfix(p); - pylval.nd = new_str(p, tok(p), toklen(p)); - p->lstate = EXPR_END; - return tCHAR; - - case '&': - if ((c = nextc(p)) == '&') { - p->lstate = EXPR_BEG; - if ((c = nextc(p)) == '=') { - pylval.id = intern("&&",2); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - return tANDOP; - } - else if (c == '.') { - p->lstate = EXPR_DOT; - return tANDDOT; - } - else if (c == '=') { - pylval.id = intern_c('&'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - if (IS_SPCARG(c)) { - yywarning(p, "'&' interpreted as argument prefix"); - c = tAMPER; - } - else if (IS_BEG()) { - c = tAMPER; - } - else { - c = '&'; - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - return c; - - case '|': - if ((c = nextc(p)) == '|') { - p->lstate = EXPR_BEG; - if ((c = nextc(p)) == '=') { - pylval.id = intern("||",2); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - return tOROP; - } - if (c == '=') { - pylval.id = intern_c('|'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - pushback(p, c); - return '|'; - - case '+': - c = nextc(p); - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - if (c == '@') { - return tUPLUS; - } - pushback(p, c); - return '+'; - } - if (c == '=') { - pylval.id = intern_c('+'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous(p))) { - p->lstate = EXPR_BEG; - pushback(p, c); - if (c >= 0 && ISDIGIT(c)) { - c = '+'; - goto start_num; - } - return tUPLUS; - } - p->lstate = EXPR_BEG; - pushback(p, c); - return '+'; - - case '-': - c = nextc(p); - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - if (c == '@') { - return tUMINUS; - } - pushback(p, c); - return '-'; - } - if (c == '=') { - pylval.id = intern_c('-'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - if (c == '>') { - p->lstate = EXPR_ENDFN; - return tLAMBDA; - } - if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous(p))) { - p->lstate = EXPR_BEG; - pushback(p, c); - if (c >= 0 && ISDIGIT(c)) { - return tUMINUS_NUM; - } - return tUMINUS; - } - p->lstate = EXPR_BEG; - pushback(p, c); - return '-'; - - case '.': - p->lstate = EXPR_BEG; - if ((c = nextc(p)) == '.') { - if ((c = nextc(p)) == '.') { - return tDOT3; - } - pushback(p, c); - return tDOT2; - } - pushback(p, c); - if (c >= 0 && ISDIGIT(c)) { - yyerror(p, "no .<digit> floating literal anymore; put 0 before dot"); - } - p->lstate = EXPR_DOT; - return '.'; - - start_num: - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - { - int is_float, seen_point, seen_e, nondigit; - - is_float = seen_point = seen_e = nondigit = 0; - p->lstate = EXPR_END; - newtok(p); - if (c == '-' || c == '+') { - tokadd(p, c); - c = nextc(p); - } - if (c == '0') { -#define no_digits() do {yyerror(p,"numeric literal without digits"); return 0;} while (0) - int start = toklen(p); - c = nextc(p); - if (c == 'x' || c == 'X') { - /* hexadecimal */ - c = nextc(p); - if (c >= 0 && ISXDIGIT(c)) { - do { - if (c == '_') { - if (nondigit) break; - nondigit = c; - continue; - } - if (!ISXDIGIT(c)) break; - nondigit = 0; - tokadd(p, tolower(c)); - } while ((c = nextc(p)) >= 0); - } - pushback(p, c); - tokfix(p); - if (toklen(p) == start) { - no_digits(); - } - else if (nondigit) goto trailing_uc; - pylval.nd = new_int(p, tok(p), 16); - return tINTEGER; - } - if (c == 'b' || c == 'B') { - /* binary */ - c = nextc(p); - if (c == '0' || c == '1') { - do { - if (c == '_') { - if (nondigit) break; - nondigit = c; - continue; - } - if (c != '0' && c != '1') break; - nondigit = 0; - tokadd(p, c); - } while ((c = nextc(p)) >= 0); - } - pushback(p, c); - tokfix(p); - if (toklen(p) == start) { - no_digits(); - } - else if (nondigit) goto trailing_uc; - pylval.nd = new_int(p, tok(p), 2); - return tINTEGER; - } - if (c == 'd' || c == 'D') { - /* decimal */ - c = nextc(p); - if (c >= 0 && ISDIGIT(c)) { - do { - if (c == '_') { - if (nondigit) break; - nondigit = c; - continue; - } - if (!ISDIGIT(c)) break; - nondigit = 0; - tokadd(p, c); - } while ((c = nextc(p)) >= 0); - } - pushback(p, c); - tokfix(p); - if (toklen(p) == start) { - no_digits(); - } - else if (nondigit) goto trailing_uc; - pylval.nd = new_int(p, tok(p), 10); - return tINTEGER; - } - if (c == '_') { - /* 0_0 */ - goto octal_number; - } - if (c == 'o' || c == 'O') { - /* prefixed octal */ - c = nextc(p); - if (c < 0 || c == '_' || !ISDIGIT(c)) { - no_digits(); - } - } - if (c >= '0' && c <= '7') { - /* octal */ - octal_number: - do { - if (c == '_') { - if (nondigit) break; - nondigit = c; - continue; - } - if (c < '0' || c > '9') break; - if (c > '7') goto invalid_octal; - nondigit = 0; - tokadd(p, c); - } while ((c = nextc(p)) >= 0); - - if (toklen(p) > start) { - pushback(p, c); - tokfix(p); - if (nondigit) goto trailing_uc; - pylval.nd = new_int(p, tok(p), 8); - return tINTEGER; - } - if (nondigit) { - pushback(p, c); - goto trailing_uc; - } - } - if (c > '7' && c <= '9') { - invalid_octal: - yyerror(p, "Invalid octal digit"); - } - else if (c == '.' || c == 'e' || c == 'E') { - tokadd(p, '0'); - } - else { - pushback(p, c); - pylval.nd = new_int(p, "0", 10); - return tINTEGER; - } - } - - for (;;) { - switch (c) { - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - nondigit = 0; - tokadd(p, c); - break; - - case '.': - if (nondigit) goto trailing_uc; - if (seen_point || seen_e) { - goto decode_num; - } - else { - int c0 = nextc(p); - if (c0 < 0 || !ISDIGIT(c0)) { - pushback(p, c0); - goto decode_num; - } - c = c0; - } - tokadd(p, '.'); - tokadd(p, c); - is_float++; - seen_point++; - nondigit = 0; - break; - - case 'e': - case 'E': - if (nondigit) { - pushback(p, c); - c = nondigit; - goto decode_num; - } - if (seen_e) { - goto decode_num; - } - tokadd(p, c); - seen_e++; - is_float++; - nondigit = c; - c = nextc(p); - if (c != '-' && c != '+') continue; - tokadd(p, c); - nondigit = c; - break; - - case '_': /* '_' in number just ignored */ - if (nondigit) goto decode_num; - nondigit = c; - break; - - default: - goto decode_num; - } - c = nextc(p); - } - - decode_num: - pushback(p, c); - if (nondigit) { - trailing_uc: - yyerror_i(p, "trailing '%c' in number", nondigit); - } - tokfix(p); - if (is_float) { - double d; - char *endp; - - errno = 0; - d = mrb_float_read(tok(p), &endp); - if (d == 0 && endp == tok(p)) { - yywarning_s(p, "corrupted float value %s", tok(p)); - } - else if (errno == ERANGE) { - yywarning_s(p, "float %s out of range", tok(p)); - errno = 0; - } - pylval.nd = new_float(p, tok(p)); - return tFLOAT; - } - pylval.nd = new_int(p, tok(p), 10); - return tINTEGER; - } - - case ')': - case ']': - p->paren_nest--; - /* fall through */ - case '}': - COND_LEXPOP(); - CMDARG_LEXPOP(); - if (c == ')') - p->lstate = EXPR_ENDFN; - else - p->lstate = EXPR_ENDARG; - return c; - - case ':': - c = nextc(p); - if (c == ':') { - if (IS_BEG() || p->lstate == EXPR_CLASS || IS_SPCARG(-1)) { - p->lstate = EXPR_BEG; - return tCOLON3; - } - p->lstate = EXPR_DOT; - return tCOLON2; - } - if (IS_END() || ISSPACE(c)) { - pushback(p, c); - p->lstate = EXPR_BEG; - return ':'; - } - pushback(p, c); - p->lstate = EXPR_FNAME; - return tSYMBEG; - - case '/': - if (IS_BEG()) { - p->lex_strterm = new_strterm(p, str_regexp, '/', 0); - return tREGEXP_BEG; - } - if ((c = nextc(p)) == '=') { - pylval.id = intern_c('/'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - pushback(p, c); - if (IS_SPCARG(c)) { - p->lex_strterm = new_strterm(p, str_regexp, '/', 0); - return tREGEXP_BEG; - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - return '/'; - - case '^': - if ((c = nextc(p)) == '=') { - pylval.id = intern_c('^'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - pushback(p, c); - return '^'; - - case ';': - p->lstate = EXPR_BEG; - return ';'; - - case ',': - p->lstate = EXPR_BEG; - return ','; - - case '~': - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - if ((c = nextc(p)) != '@') { - pushback(p, c); - } - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - return '~'; - - case '(': - if (IS_BEG()) { - c = tLPAREN; - } - else if (IS_SPCARG(-1)) { - c = tLPAREN_ARG; - } - p->paren_nest++; - COND_PUSH(0); - CMDARG_PUSH(0); - p->lstate = EXPR_BEG; - return c; - - case '[': - p->paren_nest++; - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - if ((c = nextc(p)) == ']') { - if ((c = nextc(p)) == '=') { - return tASET; - } - pushback(p, c); - return tAREF; - } - pushback(p, c); - return '['; - } - else if (IS_BEG()) { - c = tLBRACK; - } - else if (IS_ARG() && space_seen) { - c = tLBRACK; - } - p->lstate = EXPR_BEG; - COND_PUSH(0); - CMDARG_PUSH(0); - return c; - - case '{': - if (p->lpar_beg && p->lpar_beg == p->paren_nest) { - p->lstate = EXPR_BEG; - p->lpar_beg = 0; - p->paren_nest--; - COND_PUSH(0); - CMDARG_PUSH(0); - return tLAMBEG; - } - if (IS_ARG() || p->lstate == EXPR_END || p->lstate == EXPR_ENDFN) - c = '{'; /* block (primary) */ - else if (p->lstate == EXPR_ENDARG) - c = tLBRACE_ARG; /* block (expr) */ - else - c = tLBRACE; /* hash */ - COND_PUSH(0); - CMDARG_PUSH(0); - p->lstate = EXPR_BEG; - return c; - - case '\\': - c = nextc(p); - if (c == '\n') { - p->lineno++; - p->column = 0; - space_seen = 1; - goto retry; /* skip \\n */ - } - pushback(p, c); - return '\\'; - - case '%': - if (IS_BEG()) { - int term; - int paren; - - c = nextc(p); - quotation: - if (c < 0 || !ISALNUM(c)) { - term = c; - c = 'Q'; - } - else { - term = nextc(p); - if (isalnum(term)) { - yyerror(p, "unknown type of %string"); - return 0; - } - } - if (c < 0 || term < 0) { - yyerror(p, "unterminated quoted string meets end of file"); - return 0; - } - paren = term; - if (term == '(') term = ')'; - else if (term == '[') term = ']'; - else if (term == '{') term = '}'; - else if (term == '<') term = '>'; - else paren = 0; - - switch (c) { - case 'Q': - p->lex_strterm = new_strterm(p, str_dquote, term, paren); - return tSTRING_BEG; - - case 'q': - p->lex_strterm = new_strterm(p, str_squote, term, paren); - return parse_string(p); - - case 'W': - p->lex_strterm = new_strterm(p, str_dword, term, paren); - return tWORDS_BEG; - - case 'w': - p->lex_strterm = new_strterm(p, str_sword, term, paren); - return tWORDS_BEG; - - case 'x': - p->lex_strterm = new_strterm(p, str_xquote, term, paren); - return tXSTRING_BEG; - - case 'r': - p->lex_strterm = new_strterm(p, str_regexp, term, paren); - return tREGEXP_BEG; - - case 's': - p->lex_strterm = new_strterm(p, str_ssym, term, paren); - return tSYMBEG; - - case 'I': - p->lex_strterm = new_strterm(p, str_dsymbols, term, paren); - return tSYMBOLS_BEG; - - case 'i': - p->lex_strterm = new_strterm(p, str_ssymbols, term, paren); - return tSYMBOLS_BEG; - - default: - yyerror(p, "unknown type of %string"); - return 0; - } - } - if ((c = nextc(p)) == '=') { - pylval.id = intern_c('%'); - p->lstate = EXPR_BEG; - return tOP_ASGN; - } - if (IS_SPCARG(c)) { - goto quotation; - } - if (p->lstate == EXPR_FNAME || p->lstate == EXPR_DOT) { - p->lstate = EXPR_ARG; - } - else { - p->lstate = EXPR_BEG; - } - pushback(p, c); - return '%'; - - case '$': - p->lstate = EXPR_END; - token_column = newtok(p); - c = nextc(p); - if (c < 0) { - yyerror(p, "incomplete global variable syntax"); - return 0; - } - switch (c) { - case '_': /* $_: last read line string */ - c = nextc(p); - if (c >= 0 && identchar(c)) { /* if there is more after _ it is a variable */ - tokadd(p, '$'); - tokadd(p, c); - break; - } - pushback(p, c); - c = '_'; - /* fall through */ - case '~': /* $~: match-data */ - case '*': /* $*: argv */ - case '$': /* $$: pid */ - case '?': /* $?: last status */ - case '!': /* $!: error string */ - case '@': /* $@: error position */ - case '/': /* $/: input record separator */ - case '\\': /* $\: output record separator */ - case ';': /* $;: field separator */ - case ',': /* $,: output field separator */ - case '.': /* $.: last read line number */ - case '=': /* $=: ignorecase */ - case ':': /* $:: load path */ - case '<': /* $<: reading filename */ - case '>': /* $>: default output handle */ - case '\"': /* $": already loaded files */ - tokadd(p, '$'); - tokadd(p, c); - tokfix(p); - pylval.id = intern_cstr(tok(p)); - return tGVAR; - - case '-': - tokadd(p, '$'); - tokadd(p, c); - c = nextc(p); - pushback(p, c); - gvar: - tokfix(p); - pylval.id = intern_cstr(tok(p)); - return tGVAR; - - case '&': /* $&: last match */ - case '`': /* $`: string before last match */ - case '\'': /* $': string after last match */ - case '+': /* $+: string matches last pattern */ - if (last_state == EXPR_FNAME) { - tokadd(p, '$'); - tokadd(p, c); - goto gvar; - } - pylval.nd = new_back_ref(p, c); - return tBACK_REF; - - case '1': case '2': case '3': - case '4': case '5': case '6': - case '7': case '8': case '9': - do { - tokadd(p, c); - c = nextc(p); - } while (c >= 0 && isdigit(c)); - pushback(p, c); - if (last_state == EXPR_FNAME) goto gvar; - tokfix(p); - { - unsigned long n = strtoul(tok(p), NULL, 10); - if (n > INT_MAX) { - yyerror_i(p, "capture group index must be <= %d", INT_MAX); - return 0; - } - pylval.nd = new_nth_ref(p, (int)n); - } - return tNTH_REF; - - default: - if (!identchar(c)) { - pushback(p, c); - return '$'; - } - /* fall through */ - case '0': - tokadd(p, '$'); - } - break; - - case '@': - c = nextc(p); - token_column = newtok(p); - tokadd(p, '@'); - if (c == '@') { - tokadd(p, '@'); - c = nextc(p); - } - if (c < 0) { - if (p->tidx == 1) { - yyerror(p, "incomplete instance variable syntax"); - } - else { - yyerror(p, "incomplete class variable syntax"); - } - return 0; - } - else if (isdigit(c)) { - if (p->tidx == 1) { - yyerror_i(p, "'@%c' is not allowed as an instance variable name", c); - } - else { - yyerror_i(p, "'@@%c' is not allowed as a class variable name", c); - } - return 0; - } - if (!identchar(c)) { - pushback(p, c); - return '@'; - } - break; - - case '_': - token_column = newtok(p); - break; - - default: - if (!identchar(c)) { - yyerror_i(p, "Invalid char '\\x%02X' in expression", c); - goto retry; - } - - token_column = newtok(p); - break; - } - - do { - tokadd(p, c); - c = nextc(p); - if (c < 0) break; - } while (identchar(c)); - if (token_column == 0 && toklen(p) == 7 && (c < 0 || c == '\n') && - strncmp(tok(p), "__END__", toklen(p)) == 0) - return -1; - - switch (tok(p)[0]) { - case '@': case '$': - pushback(p, c); - break; - default: - if ((c == '!' || c == '?') && !peek(p, '=')) { - tokadd(p, c); - } - else { - pushback(p, c); - } - } - tokfix(p); - { - int result = 0; - - switch (tok(p)[0]) { - case '$': - p->lstate = EXPR_END; - result = tGVAR; - break; - case '@': - p->lstate = EXPR_END; - if (tok(p)[1] == '@') - result = tCVAR; - else - result = tIVAR; - break; - - default: - if (toklast(p) == '!' || toklast(p) == '?') { - result = tFID; - } - else { - if (p->lstate == EXPR_FNAME) { - if ((c = nextc(p)) == '=' && !peek(p, '~') && !peek(p, '>') && - (!peek(p, '=') || (peek_n(p, '>', 1)))) { - result = tIDENTIFIER; - tokadd(p, c); - tokfix(p); - } - else { - pushback(p, c); - } - } - if (result == 0 && ISUPPER(tok(p)[0])) { - result = tCONSTANT; - } - else { - result = tIDENTIFIER; - } - } - - if (IS_LABEL_POSSIBLE()) { - if (IS_LABEL_SUFFIX(0)) { - p->lstate = EXPR_BEG; - nextc(p); - tokfix(p); - pylval.id = intern_cstr(tok(p)); - return tLABEL; - } - } - if (p->lstate != EXPR_DOT) { - const struct kwtable *kw; - - /* See if it is a reserved word. */ - kw = mrb_reserved_word(tok(p), toklen(p)); - if (kw) { - enum mrb_lex_state_enum state = p->lstate; - pylval.num = p->lineno; - p->lstate = kw->state; - if (state == EXPR_FNAME) { - pylval.id = intern_cstr(kw->name); - return kw->id[0]; - } - if (p->lstate == EXPR_BEG) { - p->cmd_start = TRUE; - } - if (kw->id[0] == keyword_do) { - if (p->lpar_beg && p->lpar_beg == p->paren_nest) { - p->lpar_beg = 0; - p->paren_nest--; - return keyword_do_LAMBDA; - } - if (COND_P()) return keyword_do_cond; - if (CMDARG_P() && state != EXPR_CMDARG) - return keyword_do_block; - if (state == EXPR_ENDARG || state == EXPR_BEG) - return keyword_do_block; - return keyword_do; - } - if (state == EXPR_BEG || state == EXPR_VALUE) - return kw->id[0]; - else { - if (kw->id[0] != kw->id[1]) - p->lstate = EXPR_BEG; - return kw->id[1]; - } - } - } - - if (IS_BEG() || p->lstate == EXPR_DOT || IS_ARG()) { - if (cmd_state) { - p->lstate = EXPR_CMDARG; - } - else { - p->lstate = EXPR_ARG; - } - } - else if (p->lstate == EXPR_FNAME) { - p->lstate = EXPR_ENDFN; - } - else { - p->lstate = EXPR_END; - } - } - { - mrb_sym ident = intern_cstr(tok(p)); - - pylval.id = ident; -#if 0 - if (last_state != EXPR_DOT && islower(tok(p)[0]) && lvar_defined(ident)) { - p->lstate = EXPR_END; - } -#endif - } - return result; - } -} - -static int -yylex(void *lval, parser_state *p) -{ - p->ylval = lval; - return parser_yylex(p); -} - -static void -parser_init_cxt(parser_state *p, mrbc_context *cxt) -{ - if (!cxt) return; - if (cxt->filename) mrb_parser_set_filename(p, cxt->filename); - if (cxt->lineno) p->lineno = cxt->lineno; - if (cxt->syms) { - int i; - - p->locals = cons(0,0); - for (i=0; i<cxt->slen; i++) { - local_add_f(p, cxt->syms[i]); - } - } - p->capture_errors = cxt->capture_errors; - p->no_optimize = cxt->no_optimize; - if (cxt->partial_hook) { - p->cxt = cxt; - } -} - -static void -parser_update_cxt(parser_state *p, mrbc_context *cxt) -{ - node *n, *n0; - int i = 0; - - if (!cxt) return; - if ((int)(intptr_t)p->tree->car != NODE_SCOPE) return; - n0 = n = p->tree->cdr->car; - while (n) { - i++; - n = n->cdr; - } - cxt->syms = (mrb_sym *)mrb_realloc(p->mrb, cxt->syms, i*sizeof(mrb_sym)); - cxt->slen = i; - for (i=0, n=n0; n; i++,n=n->cdr) { - cxt->syms[i] = sym(n->car); - } -} - -void mrb_codedump_all(mrb_state*, struct RProc*); -void mrb_parser_dump(mrb_state *mrb, node *tree, int offset); - -MRB_API void -mrb_parser_parse(parser_state *p, mrbc_context *c) -{ - struct mrb_jmpbuf buf1; - p->jmp = &buf1; - - MRB_TRY(p->jmp) { - int n = 1; - - p->cmd_start = TRUE; - p->in_def = p->in_single = 0; - p->nerr = p->nwarn = 0; - p->lex_strterm = NULL; - - parser_init_cxt(p, c); - - if (p->mrb->jmp) { - n = yyparse(p); - } - else { - struct mrb_jmpbuf buf2; - - p->mrb->jmp = &buf2; - MRB_TRY(p->mrb->jmp) { - n = yyparse(p); - } - MRB_CATCH(p->mrb->jmp) { - p->nerr++; - } - MRB_END_EXC(p->mrb->jmp); - p->mrb->jmp = 0; - } - if (n != 0 || p->nerr > 0) { - p->tree = 0; - return; - } - if (!p->tree) { - p->tree = new_nil(p); - } - parser_update_cxt(p, c); - if (c && c->dump_result) { - mrb_parser_dump(p->mrb, p->tree, 0); - } - } - MRB_CATCH(p->jmp) { - yyerror(p, "memory allocation error"); - p->nerr++; - p->tree = 0; - return; - } - MRB_END_EXC(p->jmp); -} - -MRB_API parser_state* -mrb_parser_new(mrb_state *mrb) -{ - mrb_pool *pool; - parser_state *p; - static const parser_state parser_state_zero = { 0 }; - - pool = mrb_pool_open(mrb); - if (!pool) return NULL; - p = (parser_state *)mrb_pool_alloc(pool, sizeof(parser_state)); - if (!p) return NULL; - - *p = parser_state_zero; - p->mrb = mrb; - p->pool = pool; - - p->s = p->send = NULL; -#ifndef MRB_DISABLE_STDIO - p->f = NULL; -#endif - - p->cmd_start = TRUE; - p->in_def = p->in_single = 0; - - p->capture_errors = FALSE; - p->lineno = 1; - p->column = 0; -#if defined(PARSER_TEST) || defined(PARSER_DEBUG) - yydebug = 1; -#endif - p->tsiz = MRB_PARSER_TOKBUF_SIZE; - p->tokbuf = p->buf; - - p->lex_strterm = NULL; - p->all_heredocs = p->parsing_heredoc = NULL; - p->lex_strterm_before_heredoc = NULL; - - p->current_filename_index = -1; - p->filename_table = NULL; - p->filename_table_length = 0; - - return p; -} - -MRB_API void -mrb_parser_free(parser_state *p) { - if (p->tokbuf != p->buf) { - mrb_free(p->mrb, p->tokbuf); - } - mrb_pool_close(p->pool); -} - -MRB_API mrbc_context* -mrbc_context_new(mrb_state *mrb) -{ - return (mrbc_context *)mrb_calloc(mrb, 1, sizeof(mrbc_context)); -} - -MRB_API void -mrbc_context_free(mrb_state *mrb, mrbc_context *cxt) -{ - mrb_free(mrb, cxt->filename); - mrb_free(mrb, cxt->syms); - mrb_free(mrb, cxt); -} - -MRB_API const char* -mrbc_filename(mrb_state *mrb, mrbc_context *c, const char *s) -{ - if (s) { - size_t len = strlen(s); - char *p = (char *)mrb_malloc(mrb, len + 1); - - memcpy(p, s, len + 1); - if (c->filename) { - mrb_free(mrb, c->filename); - } - c->filename = p; - } - return c->filename; -} - -MRB_API void -mrbc_partial_hook(mrb_state *mrb, mrbc_context *c, int (*func)(struct mrb_parser_state*), void *data) -{ - c->partial_hook = func; - c->partial_data = data; -} - -MRB_API void -mrb_parser_set_filename(struct mrb_parser_state *p, const char *f) -{ - mrb_sym sym; - size_t i; - mrb_sym* new_table; - - sym = mrb_intern_cstr(p->mrb, f); - p->filename = mrb_sym2name_len(p->mrb, sym, NULL); - p->lineno = (p->filename_table_length > 0)? 0 : 1; - - for (i = 0; i < p->filename_table_length; ++i) { - if (p->filename_table[i] == sym) { - p->current_filename_index = (int)i; - return; - } - } - - p->current_filename_index = (int)p->filename_table_length++; - - new_table = (mrb_sym*)parser_palloc(p, sizeof(mrb_sym) * p->filename_table_length); - if (p->filename_table) { - memmove(new_table, p->filename_table, sizeof(mrb_sym) * p->filename_table_length); - } - p->filename_table = new_table; - p->filename_table[p->filename_table_length - 1] = sym; -} - -MRB_API char const* -mrb_parser_get_filename(struct mrb_parser_state* p, uint16_t idx) { - if (idx >= p->filename_table_length) { return NULL; } - else { - return mrb_sym2name_len(p->mrb, p->filename_table[idx], NULL); - } -} - -#ifndef MRB_DISABLE_STDIO -MRB_API parser_state* -mrb_parse_file(mrb_state *mrb, FILE *f, mrbc_context *c) -{ - parser_state *p; - - p = mrb_parser_new(mrb); - if (!p) return NULL; - p->s = p->send = NULL; - p->f = f; - - mrb_parser_parse(p, c); - return p; -} -#endif - -MRB_API parser_state* -mrb_parse_nstring(mrb_state *mrb, const char *s, size_t len, mrbc_context *c) -{ - parser_state *p; - - p = mrb_parser_new(mrb); - if (!p) return NULL; - p->s = s; - p->send = s + len; - - mrb_parser_parse(p, c); - return p; -} - -MRB_API parser_state* -mrb_parse_string(mrb_state *mrb, const char *s, mrbc_context *c) -{ - return mrb_parse_nstring(mrb, s, strlen(s), c); -} - -MRB_API mrb_value -mrb_load_exec(mrb_state *mrb, struct mrb_parser_state *p, mrbc_context *c) -{ - struct RClass *target = mrb->object_class; - struct RProc *proc; - mrb_value v; - unsigned int keep = 0; - - if (!p) { - return mrb_undef_value(); - } - if (!p->tree || p->nerr) { - if (c) c->parser_nerr = p->nerr; - if (p->capture_errors) { - char buf[256]; - int n; - - n = snprintf(buf, sizeof(buf), "line %d: %s\n", - p->error_buffer[0].lineno, p->error_buffer[0].message); - mrb->exc = mrb_obj_ptr(mrb_exc_new(mrb, E_SYNTAX_ERROR, buf, n)); - mrb_parser_free(p); - return mrb_undef_value(); - } - else { - if (mrb->exc == NULL) { - mrb->exc = mrb_obj_ptr(mrb_exc_new_str_lit(mrb, E_SYNTAX_ERROR, "syntax error")); - } - mrb_parser_free(p); - return mrb_undef_value(); - } - } - proc = mrb_generate_code(mrb, p); - mrb_parser_free(p); - if (proc == NULL) { - if (mrb->exc == NULL) { - mrb->exc = mrb_obj_ptr(mrb_exc_new_str_lit(mrb, E_SCRIPT_ERROR, "codegen error")); - } - return mrb_undef_value(); - } - if (c) { - if (c->dump_result) mrb_codedump_all(mrb, proc); - if (c->no_exec) return mrb_obj_value(proc); - if (c->target_class) { - target = c->target_class; - } - if (c->keep_lv) { - keep = c->slen + 1; - } - else { - c->keep_lv = TRUE; - } - } - proc->target_class = target; - if (mrb->c->ci) { - mrb->c->ci->target_class = target; - } - v = mrb_top_run(mrb, proc, mrb_top_self(mrb), keep); - if (mrb->exc) return mrb_nil_value(); - return v; -} - -#ifndef MRB_DISABLE_STDIO -MRB_API mrb_value -mrb_load_file_cxt(mrb_state *mrb, FILE *f, mrbc_context *c) -{ - return mrb_load_exec(mrb, mrb_parse_file(mrb, f, c), c); -} - -MRB_API mrb_value -mrb_load_file(mrb_state *mrb, FILE *f) -{ - return mrb_load_file_cxt(mrb, f, NULL); -} -#endif - -MRB_API mrb_value -mrb_load_nstring_cxt(mrb_state *mrb, const char *s, size_t len, mrbc_context *c) -{ - return mrb_load_exec(mrb, mrb_parse_nstring(mrb, s, len, c), c); -} - -MRB_API mrb_value -mrb_load_nstring(mrb_state *mrb, const char *s, size_t len) -{ - return mrb_load_nstring_cxt(mrb, s, len, NULL); -} - -MRB_API mrb_value -mrb_load_string_cxt(mrb_state *mrb, const char *s, mrbc_context *c) -{ - return mrb_load_nstring_cxt(mrb, s, strlen(s), c); -} - -MRB_API mrb_value -mrb_load_string(mrb_state *mrb, const char *s) -{ - return mrb_load_string_cxt(mrb, s, NULL); -} - -#ifndef MRB_DISABLE_STDIO - -static void -dump_prefix(node *tree, int offset) -{ - printf("%05d ", tree->lineno); - while (offset--) { - putc(' ', stdout); - putc(' ', stdout); - } -} - -static void -dump_recur(mrb_state *mrb, node *tree, int offset) -{ - while (tree) { - mrb_parser_dump(mrb, tree->car, offset); - tree = tree->cdr; - } -} - -#endif - -void -mrb_parser_dump(mrb_state *mrb, node *tree, int offset) -{ -#ifndef MRB_DISABLE_STDIO - int nodetype; - - if (!tree) return; - again: - dump_prefix(tree, offset); - nodetype = (int)(intptr_t)tree->car; - tree = tree->cdr; - switch (nodetype) { - case NODE_BEGIN: - printf("NODE_BEGIN:\n"); - dump_recur(mrb, tree, offset+1); - break; - - case NODE_RESCUE: - printf("NODE_RESCUE:\n"); - if (tree->car) { - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - } - tree = tree->cdr; - if (tree->car) { - node *n2 = tree->car; - - dump_prefix(n2, offset+1); - printf("rescue:\n"); - while (n2) { - node *n3 = n2->car; - if (n3->car) { - dump_prefix(n2, offset+2); - printf("handle classes:\n"); - dump_recur(mrb, n3->car, offset+3); - } - if (n3->cdr->car) { - dump_prefix(n3, offset+2); - printf("exc_var:\n"); - mrb_parser_dump(mrb, n3->cdr->car, offset+3); - } - if (n3->cdr->cdr->car) { - dump_prefix(n3, offset+2); - printf("rescue body:\n"); - mrb_parser_dump(mrb, n3->cdr->cdr->car, offset+3); - } - n2 = n2->cdr; - } - } - tree = tree->cdr; - if (tree->car) { - dump_prefix(tree, offset+1); - printf("else:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - } - break; - - case NODE_ENSURE: - printf("NODE_ENSURE:\n"); - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - dump_prefix(tree, offset+1); - printf("ensure:\n"); - mrb_parser_dump(mrb, tree->cdr->cdr, offset+2); - break; - - case NODE_LAMBDA: - printf("NODE_BLOCK:\n"); - goto block; - - case NODE_BLOCK: - block: - printf("NODE_BLOCK:\n"); - tree = tree->cdr; - if (tree->car) { - node *n = tree->car; - - if (n->car) { - dump_prefix(n, offset+1); - printf("mandatory args:\n"); - dump_recur(mrb, n->car, offset+2); - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("optional args:\n"); - { - node *n2 = n->car; - - while (n2) { - dump_prefix(n2, offset+2); - printf("%s=", mrb_sym2name(mrb, sym(n2->car->car))); - mrb_parser_dump(mrb, n2->car->cdr, 0); - n2 = n2->cdr; - } - } - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("rest=*%s\n", mrb_sym2name(mrb, sym(n->car))); - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("post mandatory args:\n"); - dump_recur(mrb, n->car, offset+2); - } - if (n->cdr) { - dump_prefix(n, offset+1); - printf("blk=&%s\n", mrb_sym2name(mrb, sym(n->cdr))); - } - } - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->cdr->car, offset+2); - break; - - case NODE_IF: - printf("NODE_IF:\n"); - dump_prefix(tree, offset+1); - printf("cond:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - dump_prefix(tree, offset+1); - printf("then:\n"); - mrb_parser_dump(mrb, tree->cdr->car, offset+2); - if (tree->cdr->cdr->car) { - dump_prefix(tree, offset+1); - printf("else:\n"); - mrb_parser_dump(mrb, tree->cdr->cdr->car, offset+2); - } - break; - - case NODE_AND: - printf("NODE_AND:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - mrb_parser_dump(mrb, tree->cdr, offset+1); - break; - - case NODE_OR: - printf("NODE_OR:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - mrb_parser_dump(mrb, tree->cdr, offset+1); - break; - - case NODE_CASE: - printf("NODE_CASE:\n"); - if (tree->car) { - mrb_parser_dump(mrb, tree->car, offset+1); - } - tree = tree->cdr; - while (tree) { - dump_prefix(tree, offset+1); - printf("case:\n"); - dump_recur(mrb, tree->car->car, offset+2); - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->car->cdr, offset+2); - tree = tree->cdr; - } - break; - - case NODE_WHILE: - printf("NODE_WHILE:\n"); - dump_prefix(tree, offset+1); - printf("cond:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->cdr, offset+2); - break; - - case NODE_UNTIL: - printf("NODE_UNTIL:\n"); - dump_prefix(tree, offset+1); - printf("cond:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->cdr, offset+2); - break; - - case NODE_FOR: - printf("NODE_FOR:\n"); - dump_prefix(tree, offset+1); - printf("var:\n"); - { - node *n2 = tree->car; - - if (n2->car) { - dump_prefix(n2, offset+2); - printf("pre:\n"); - dump_recur(mrb, n2->car, offset+3); - } - n2 = n2->cdr; - if (n2) { - if (n2->car) { - dump_prefix(n2, offset+2); - printf("rest:\n"); - mrb_parser_dump(mrb, n2->car, offset+3); - } - n2 = n2->cdr; - if (n2) { - if (n2->car) { - dump_prefix(n2, offset+2); - printf("post:\n"); - dump_recur(mrb, n2->car, offset+3); - } - } - } - } - tree = tree->cdr; - dump_prefix(tree, offset+1); - printf("in:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - tree = tree->cdr; - dump_prefix(tree, offset+1); - printf("do:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - break; - - case NODE_SCOPE: - printf("NODE_SCOPE:\n"); - { - node *n2 = tree->car; - mrb_bool first_lval = TRUE; - - if (n2 && (n2->car || n2->cdr)) { - dump_prefix(n2, offset+1); - printf("local variables:\n"); - dump_prefix(n2, offset+2); - while (n2) { - if (n2->car) { - if (!first_lval) printf(", "); - printf("%s", mrb_sym2name(mrb, sym(n2->car))); - first_lval = FALSE; - } - n2 = n2->cdr; - } - printf("\n"); - } - } - tree = tree->cdr; - offset++; - goto again; - - case NODE_FCALL: - case NODE_CALL: - case NODE_SCALL: - switch (nodetype) { - case NODE_FCALL: - printf("NODE_FCALL:\n"); break; - case NODE_CALL: - printf("NODE_CALL(.):\n"); break; - case NODE_SCALL: - printf("NODE_SCALL(&.):\n"); break; - default: - break; - } - mrb_parser_dump(mrb, tree->car, offset+1); - dump_prefix(tree, offset+1); - printf("method='%s' (%d)\n", - mrb_sym2name(mrb, sym(tree->cdr->car)), - (int)(intptr_t)tree->cdr->car); - tree = tree->cdr->cdr->car; - if (tree) { - dump_prefix(tree, offset+1); - printf("args:\n"); - dump_recur(mrb, tree->car, offset+2); - if (tree->cdr) { - dump_prefix(tree, offset+1); - printf("block:\n"); - mrb_parser_dump(mrb, tree->cdr, offset+2); - } - } - break; - - case NODE_DOT2: - printf("NODE_DOT2:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - mrb_parser_dump(mrb, tree->cdr, offset+1); - break; - - case NODE_DOT3: - printf("NODE_DOT3:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - mrb_parser_dump(mrb, tree->cdr, offset+1); - break; - - case NODE_COLON2: - printf("NODE_COLON2:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - dump_prefix(tree, offset+1); - printf("::%s\n", mrb_sym2name(mrb, sym(tree->cdr))); - break; - - case NODE_COLON3: - printf("NODE_COLON3: ::%s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_ARRAY: - printf("NODE_ARRAY:\n"); - dump_recur(mrb, tree, offset+1); - break; - - case NODE_HASH: - printf("NODE_HASH:\n"); - while (tree) { - dump_prefix(tree, offset+1); - printf("key:\n"); - mrb_parser_dump(mrb, tree->car->car, offset+2); - dump_prefix(tree, offset+1); - printf("value:\n"); - mrb_parser_dump(mrb, tree->car->cdr, offset+2); - tree = tree->cdr; - } - break; - - case NODE_SPLAT: - printf("NODE_SPLAT:\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_ASGN: - printf("NODE_ASGN:\n"); - dump_prefix(tree, offset+1); - printf("lhs:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - dump_prefix(tree, offset+1); - printf("rhs:\n"); - mrb_parser_dump(mrb, tree->cdr, offset+2); - break; - - case NODE_MASGN: - printf("NODE_MASGN:\n"); - dump_prefix(tree, offset+1); - printf("mlhs:\n"); - { - node *n2 = tree->car; - - if (n2->car) { - dump_prefix(tree, offset+2); - printf("pre:\n"); - dump_recur(mrb, n2->car, offset+3); - } - n2 = n2->cdr; - if (n2) { - if (n2->car) { - dump_prefix(n2, offset+2); - printf("rest:\n"); - if (n2->car == (node*)-1) { - dump_prefix(n2, offset+2); - printf("(empty)\n"); - } - else { - mrb_parser_dump(mrb, n2->car, offset+3); - } - } - n2 = n2->cdr; - if (n2) { - if (n2->car) { - dump_prefix(n2, offset+2); - printf("post:\n"); - dump_recur(mrb, n2->car, offset+3); - } - } - } - } - dump_prefix(tree, offset+1); - printf("rhs:\n"); - mrb_parser_dump(mrb, tree->cdr, offset+2); - break; - - case NODE_OP_ASGN: - printf("NODE_OP_ASGN:\n"); - dump_prefix(tree, offset+1); - printf("lhs:\n"); - mrb_parser_dump(mrb, tree->car, offset+2); - tree = tree->cdr; - dump_prefix(tree, offset+1); - printf("op='%s' (%d)\n", mrb_sym2name(mrb, sym(tree->car)), (int)(intptr_t)tree->car); - tree = tree->cdr; - mrb_parser_dump(mrb, tree->car, offset+1); - break; - - case NODE_SUPER: - printf("NODE_SUPER:\n"); - if (tree) { - dump_prefix(tree, offset+1); - printf("args:\n"); - dump_recur(mrb, tree->car, offset+2); - if (tree->cdr) { - dump_prefix(tree, offset+1); - printf("block:\n"); - mrb_parser_dump(mrb, tree->cdr, offset+2); - } - } - break; - - case NODE_ZSUPER: - printf("NODE_ZSUPER\n"); - break; - - case NODE_RETURN: - printf("NODE_RETURN:\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_YIELD: - printf("NODE_YIELD:\n"); - dump_recur(mrb, tree, offset+1); - break; - - case NODE_BREAK: - printf("NODE_BREAK:\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_NEXT: - printf("NODE_NEXT:\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_REDO: - printf("NODE_REDO\n"); - break; - - case NODE_RETRY: - printf("NODE_RETRY\n"); - break; - - case NODE_LVAR: - printf("NODE_LVAR %s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_GVAR: - printf("NODE_GVAR %s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_IVAR: - printf("NODE_IVAR %s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_CVAR: - printf("NODE_CVAR %s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_CONST: - printf("NODE_CONST %s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_MATCH: - printf("NODE_MATCH:\n"); - dump_prefix(tree, offset + 1); - printf("lhs:\n"); - mrb_parser_dump(mrb, tree->car, offset + 2); - dump_prefix(tree, offset + 1); - printf("rhs:\n"); - mrb_parser_dump(mrb, tree->cdr, offset + 2); - break; - - case NODE_BACK_REF: - printf("NODE_BACK_REF: $%c\n", (int)(intptr_t)tree); - break; - - case NODE_NTH_REF: - printf("NODE_NTH_REF: $%" MRB_PRId "\n", (mrb_int)(intptr_t)tree); - break; - - case NODE_ARG: - printf("NODE_ARG %s\n", mrb_sym2name(mrb, sym(tree))); - break; - - case NODE_BLOCK_ARG: - printf("NODE_BLOCK_ARG:\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_INT: - printf("NODE_INT %s base %d\n", (char*)tree->car, (int)(intptr_t)tree->cdr->car); - break; - - case NODE_FLOAT: - printf("NODE_FLOAT %s\n", (char*)tree); - break; - - case NODE_NEGATE: - printf("NODE_NEGATE\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_STR: - printf("NODE_STR \"%s\" len %d\n", (char*)tree->car, (int)(intptr_t)tree->cdr); - break; - - case NODE_DSTR: - printf("NODE_DSTR\n"); - dump_recur(mrb, tree, offset+1); - break; - - case NODE_XSTR: - printf("NODE_XSTR \"%s\" len %d\n", (char*)tree->car, (int)(intptr_t)tree->cdr); - break; - - case NODE_DXSTR: - printf("NODE_DXSTR\n"); - dump_recur(mrb, tree, offset+1); - break; - - case NODE_REGX: - printf("NODE_REGX /%s/%s\n", (char*)tree->car, (char*)tree->cdr); - break; - - case NODE_DREGX: - printf("NODE_DREGX\n"); - dump_recur(mrb, tree->car, offset+1); - dump_prefix(tree, offset); - printf("tail: %s\n", (char*)tree->cdr->cdr->car); - if (tree->cdr->cdr->cdr->car) { - dump_prefix(tree, offset); - printf("opt: %s\n", (char*)tree->cdr->cdr->cdr->car); - } - if (tree->cdr->cdr->cdr->cdr) { - dump_prefix(tree, offset); - printf("enc: %s\n", (char*)tree->cdr->cdr->cdr->cdr); - } - break; - - case NODE_SYM: - printf("NODE_SYM :%s (%d)\n", mrb_sym2name(mrb, sym(tree)), - (int)(intptr_t)tree); - break; - - case NODE_SELF: - printf("NODE_SELF\n"); - break; - - case NODE_NIL: - printf("NODE_NIL\n"); - break; - - case NODE_TRUE: - printf("NODE_TRUE\n"); - break; - - case NODE_FALSE: - printf("NODE_FALSE\n"); - break; - - case NODE_ALIAS: - printf("NODE_ALIAS %s %s:\n", - mrb_sym2name(mrb, sym(tree->car)), - mrb_sym2name(mrb, sym(tree->cdr))); - break; - - case NODE_UNDEF: - printf("NODE_UNDEF"); - { - node *t = tree; - while (t) { - printf(" %s", mrb_sym2name(mrb, sym(t->car))); - t = t->cdr; - } - } - printf(":\n"); - break; - - case NODE_CLASS: - printf("NODE_CLASS:\n"); - if (tree->car->car == (node*)0) { - dump_prefix(tree, offset+1); - printf(":%s\n", mrb_sym2name(mrb, sym(tree->car->cdr))); - } - else if (tree->car->car == (node*)1) { - dump_prefix(tree, offset+1); - printf("::%s\n", mrb_sym2name(mrb, sym(tree->car->cdr))); - } - else { - mrb_parser_dump(mrb, tree->car->car, offset+1); - dump_prefix(tree, offset+1); - printf("::%s\n", mrb_sym2name(mrb, sym(tree->car->cdr))); - } - if (tree->cdr->car) { - dump_prefix(tree, offset+1); - printf("super:\n"); - mrb_parser_dump(mrb, tree->cdr->car, offset+2); - } - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->cdr->cdr->car->cdr, offset+2); - break; - - case NODE_MODULE: - printf("NODE_MODULE:\n"); - if (tree->car->car == (node*)0) { - dump_prefix(tree, offset+1); - printf(":%s\n", mrb_sym2name(mrb, sym(tree->car->cdr))); - } - else if (tree->car->car == (node*)1) { - dump_prefix(tree, offset+1); - printf("::%s\n", mrb_sym2name(mrb, sym(tree->car->cdr))); - } - else { - mrb_parser_dump(mrb, tree->car->car, offset+1); - dump_prefix(tree, offset+1); - printf("::%s\n", mrb_sym2name(mrb, sym(tree->car->cdr))); - } - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->cdr->car->cdr, offset+2); - break; - - case NODE_SCLASS: - printf("NODE_SCLASS:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - dump_prefix(tree, offset+1); - printf("body:\n"); - mrb_parser_dump(mrb, tree->cdr->car->cdr, offset+2); - break; - - case NODE_DEF: - printf("NODE_DEF:\n"); - dump_prefix(tree, offset+1); - printf("%s\n", mrb_sym2name(mrb, sym(tree->car))); - tree = tree->cdr; - { - node *n2 = tree->car; - mrb_bool first_lval = TRUE; - - if (n2 && (n2->car || n2->cdr)) { - dump_prefix(n2, offset+1); - printf("local variables:\n"); - dump_prefix(n2, offset+2); - while (n2) { - if (n2->car) { - if (!first_lval) printf(", "); - printf("%s", mrb_sym2name(mrb, sym(n2->car))); - first_lval = FALSE; - } - n2 = n2->cdr; - } - printf("\n"); - } - } - tree = tree->cdr; - if (tree->car) { - node *n = tree->car; - - if (n->car) { - dump_prefix(n, offset+1); - printf("mandatory args:\n"); - dump_recur(mrb, n->car, offset+2); - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("optional args:\n"); - { - node *n2 = n->car; - - while (n2) { - dump_prefix(n2, offset+2); - printf("%s=", mrb_sym2name(mrb, sym(n2->car->car))); - mrb_parser_dump(mrb, n2->car->cdr, 0); - n2 = n2->cdr; - } - } - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("rest=*%s\n", mrb_sym2name(mrb, sym(n->car))); - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("post mandatory args:\n"); - dump_recur(mrb, n->car, offset+2); - } - if (n->cdr) { - dump_prefix(n, offset+1); - printf("blk=&%s\n", mrb_sym2name(mrb, sym(n->cdr))); - } - } - mrb_parser_dump(mrb, tree->cdr->car, offset+1); - break; - - case NODE_SDEF: - printf("NODE_SDEF:\n"); - mrb_parser_dump(mrb, tree->car, offset+1); - tree = tree->cdr; - dump_prefix(tree, offset+1); - printf(":%s\n", mrb_sym2name(mrb, sym(tree->car))); - tree = tree->cdr->cdr; - if (tree->car) { - node *n = tree->car; - - if (n->car) { - dump_prefix(n, offset+1); - printf("mandatory args:\n"); - dump_recur(mrb, n->car, offset+2); - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("optional args:\n"); - { - node *n2 = n->car; - - while (n2) { - dump_prefix(n2, offset+2); - printf("%s=", mrb_sym2name(mrb, sym(n2->car->car))); - mrb_parser_dump(mrb, n2->car->cdr, 0); - n2 = n2->cdr; - } - } - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("rest=*%s\n", mrb_sym2name(mrb, sym(n->car))); - } - n = n->cdr; - if (n->car) { - dump_prefix(n, offset+1); - printf("post mandatory args:\n"); - dump_recur(mrb, n->car, offset+2); - } - n = n->cdr; - if (n) { - dump_prefix(n, offset+1); - printf("blk=&%s\n", mrb_sym2name(mrb, sym(n))); - } - } - tree = tree->cdr; - mrb_parser_dump(mrb, tree->car, offset+1); - break; - - case NODE_POSTEXE: - printf("NODE_POSTEXE:\n"); - mrb_parser_dump(mrb, tree, offset+1); - break; - - case NODE_HEREDOC: - printf("NODE_HEREDOC (<<%s):\n", ((parser_heredoc_info*)tree)->term); - dump_recur(mrb, ((parser_heredoc_info*)tree)->doc, offset+1); - break; - - default: - printf("node type: %d (0x%x)\n", nodetype, (unsigned)nodetype); - break; - } -#endif -} |