/** * @file parser_yang.c * @author Michal Vasko * @brief YANG parser * * Copyright (c) 2018 - 2024 CESNET, z.s.p.o. * * This source code is licensed under BSD 3-Clause License (the "License"). * You may not use this file except in compliance with the License. * You may obtain a copy of the License at * * https://opensource.org/licenses/BSD-3-Clause */ #include "parser_internal.h" #include #include #include #include #include #include #include #include "context.h" #include "dict.h" #include "in_internal.h" #include "log.h" #include "ly_common.h" #include "parser_schema.h" #include "path.h" #include "set.h" #include "tree.h" #include "tree_edit.h" #include "tree_schema.h" #include "tree_schema_free.h" #include "tree_schema_internal.h" struct lys_glob_unres; /** * @brief Insert WORD into the libyang context's dictionary and store as TARGET. * * @param[in] CTX yang parser context to access libyang context. * @param[in] BUF buffer in case the word is not a constant and can be inserted directly (zero-copy) * @param[out] TARGET variable where to store the pointer to the inserted value. * @param[in] WORD string to store. * @param[in] LEN length of the string in WORD to store. */ #define INSERT_WORD_GOTO(CTX, BUF, TARGET, WORD, LEN, RET, LABEL) \ if (BUF) {LY_CHECK_GOTO(RET = lydict_insert_zc(PARSER_CTX(CTX), WORD, &(TARGET)), LABEL);}\ else {LY_CHECK_GOTO(RET = lydict_insert(PARSER_CTX(CTX), LEN ? WORD : "", LEN, &(TARGET)), LABEL);} /** * @brief Read from the IN structure COUNT items. Also updates the indent value in yang parser context * * @param[in] CTX yang parser context to update its indent value. * @param[in] COUNT number of items for which the DATA pointer is supposed to move on. */ #define MOVE_INPUT(CTX, COUNT) ly_in_skip((CTX)->in, COUNT);(CTX)->indent+=COUNT /** * @brief Loop through all substatements. Starts a for loop and ::YANG_READ_SUBSTMT_NEXT_ITER must be used at its end. * * @param[in] CTX yang parser context. * @param[out] KW YANG keyword read. * @param[out] WORD Pointer to the keyword itself. * @param[out] WORD_LEN Length of the keyword. * @param[out] RET Variable for error storing. * @param[in] ERR_LABEL Label to go to on error. */ #define YANG_READ_SUBSTMT_FOR_GOTO(CTX, KW, WORD, WORD_LEN, RET, ERR_LABEL) \ ly_bool __loop_end = 0; \ if ((RET = get_keyword(CTX, &KW, &WORD, &WORD_LEN))) { \ goto ERR_LABEL; \ } \ if (KW == LY_STMT_SYNTAX_SEMICOLON) { \ __loop_end = 1; \ } else if (KW != LY_STMT_SYNTAX_LEFT_BRACE) { \ LOGVAL_PARSER(CTX, LYVE_SYNTAX_YANG, "Invalid keyword \"%s\", expected \";\" or \"{\".", lyplg_ext_stmt2str(KW)); \ RET = LY_EVALID; \ goto ERR_LABEL; \ } else { \ YANG_READ_SUBSTMT_NEXT_ITER(CTX, KW, WORD, WORD_LEN, NULL, RET, ERR_LABEL); \ } \ while (!__loop_end) /** * @brief Next iteration of ::YANG_READ_SUBSTMT_FOR_GOTO loop. * * @param[in] CTX yang parser context. * @param[out] KW YANG keyword read. * @param[out] WORD Pointer to the keyword itself. * @param[out] WORD_LEN Length of the keyword. * @param[in] EXTS Final extension instance array to store. * @param[out] RET Variable for error storing. * @param[in] ERR_LABEL Label to go to on error. */ #define YANG_READ_SUBSTMT_NEXT_ITER(CTX, KW, WORD, WORD_LEN, EXTS, RET, ERR_LABEL) \ if ((RET = get_keyword(CTX, &KW, &WORD, &WORD_LEN))) { \ goto ERR_LABEL; \ } \ if (KW == LY_STMT_SYNTAX_RIGHT_BRACE) { \ if (EXTS && (RET = ly_set_add(&(CTX)->main_ctx->ext_inst, (EXTS), 1, NULL))) { \ goto ERR_LABEL; \ } \ __loop_end = 1; \ } LY_ERR parse_container(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings); LY_ERR parse_uses(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings); LY_ERR parse_choice(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings); LY_ERR parse_case(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings); LY_ERR parse_list(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings); LY_ERR parse_grouping(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_grp **groupings); /** * @brief Add another character to dynamic buffer, a low-level function. * * Enlarge if needed. Updates \p input as well as \p buf_used. * * @param[in] ctx libyang context for logging. * @param[in,out] in Input structure. * @param[in] len Number of bytes to get from the input string and copy into the buffer. * @param[in,out] buf Buffer to use, can be moved by realloc(). * @param[in,out] buf_len Current size of the buffer. * @param[in,out] buf_used Currently used characters of the buffer. * @return LY_ERR values. */ LY_ERR buf_add_char(struct ly_ctx *ctx, struct ly_in *in, size_t len, char **buf, size_t *buf_len, size_t *buf_used) { #define BUF_STEP 16; if (*buf_len <= (*buf_used) + len) { *buf_len += BUF_STEP; *buf = ly_realloc(*buf, *buf_len); LY_CHECK_ERR_RET(!*buf, LOGMEM(ctx), LY_EMEM); } if (*buf_used) { ly_in_read(in, &(*buf)[*buf_used], len); } else { ly_in_read(in, *buf, len); } (*buf_used) += len; return LY_SUCCESS; #undef BUF_STEP } /** * @brief Store a single UTF8 character. It depends whether in a dynamically-allocated buffer or just as a pointer to the data. * * @param[in] ctx yang parser context for logging. * @param[in] arg Type of the input string to select method of checking character validity. * @param[in,out] word_p Word pointer. If buffer (\p word_b) was not yet needed, it is just a pointer to the first * stored character. If buffer was needed (\p word_b is non-NULL or \p need_buf is set), it is pointing to the buffer. * @param[in,out] word_len Current length of the word pointed to by \p word_p. * @param[in,out] word_b Word buffer. Is kept NULL as long as it is not requested (word is a substring of the data). * @param[in,out] buf_len Current length of \p word_b. * @param[in] need_buf Flag if the dynamically allocated buffer is required. * @param[in,out] prefix Storage for internally used flag in case of possible prefixed identifiers: * 0 - colon not yet found (no prefix) * 1 - \p c is the colon character * 2 - prefix already processed, now processing the identifier * @return LY_ERR values. */ LY_ERR buf_store_char(struct lysp_yang_ctx *ctx, enum yang_arg arg, char **word_p, size_t *word_len, char **word_b, size_t *buf_len, ly_bool need_buf, uint8_t *prefix) { uint32_t c; size_t len; /* check valid combination of input paremeters - if need_buf specified, word_b must be provided */ assert(!need_buf || (need_buf && word_b)); /* get UTF8 code point (and number of bytes coding the character) */ LY_CHECK_ERR_RET(ly_getutf8(&ctx->in->current, &c, &len), LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[-len]), LY_EVALID); ctx->in->current -= len; if (c == '\n') { ctx->indent = 0; LY_IN_NEW_LINE(ctx->in); } else { /* note - even the multibyte character is count as 1 */ ++ctx->indent; } /* check character validity */ switch (arg) { case Y_IDENTIF_ARG: LY_CHECK_RET(lysp_check_identifierchar((struct lysp_ctx *)ctx, c, !(*word_len), NULL)); break; case Y_PREF_IDENTIF_ARG: LY_CHECK_RET(lysp_check_identifierchar((struct lysp_ctx *)ctx, c, !(*word_len), prefix)); break; case Y_STR_ARG: case Y_MAYBE_STR_ARG: LY_CHECK_RET(lysp_check_stringchar((struct lysp_ctx *)ctx, c)); break; } if (word_b && *word_b) { /* add another character into buffer */ if (buf_add_char(PARSER_CTX(ctx), ctx->in, len, word_b, buf_len, word_len)) { return LY_EMEM; } /* in case of realloc */ *word_p = *word_b; } else if (word_b && need_buf) { /* first time we need a buffer, copy everything read up to now */ if (*word_len) { *word_b = malloc(*word_len); LY_CHECK_ERR_RET(!*word_b, LOGMEM(PARSER_CTX(ctx)), LY_EMEM); *buf_len = *word_len; memcpy(*word_b, *word_p, *word_len); } /* add this new character into buffer */ if (buf_add_char(PARSER_CTX(ctx), ctx->in, len, word_b, buf_len, word_len)) { return LY_EMEM; } /* in case of realloc */ *word_p = *word_b; } else { /* just remember the first character pointer */ if (!*word_p) { *word_p = (char *)ctx->in->current; } /* ... and update the word's length */ (*word_len) += len; ly_in_skip(ctx->in, len); } return LY_SUCCESS; } /** * @brief Skip YANG comment in data. * * @param[in] ctx yang parser context for logging. * @param[in] comment Type of the comment to process: * 1 for a one-line comment, * 2 for a block comment. * @return LY_ERR values. */ LY_ERR skip_comment(struct lysp_yang_ctx *ctx, uint8_t comment) { /* internal statuses: */ #define COMMENT_NO 0 /* comment ended */ #define COMMENT_LINE 1 /* in line comment */ #define COMMENT_BLOCK 2 /* in block comment */ #define COMMENT_BLOCK_END 3 /* in block comment with last read character '*' */ while (ctx->in->current[0] && comment) { switch (comment) { case COMMENT_LINE: if (ctx->in->current[0] == '\n') { comment = COMMENT_NO; LY_IN_NEW_LINE(ctx->in); } break; case COMMENT_BLOCK: if (ctx->in->current[0] == '*') { comment = COMMENT_BLOCK_END; } else if (ctx->in->current[0] == '\n') { LY_IN_NEW_LINE(ctx->in); } break; case COMMENT_BLOCK_END: if (ctx->in->current[0] == '/') { comment = COMMENT_NO; } else if (ctx->in->current[0] != '*') { if (ctx->in->current[0] == '\n') { LY_IN_NEW_LINE(ctx->in); } comment = COMMENT_BLOCK; } break; default: LOGINT_RET(PARSER_CTX(ctx)); } if (ctx->in->current[0] == '\n') { ctx->indent = 0; } else { ++ctx->indent; } ++ctx->in->current; } if (!ctx->in->current[0] && (comment >= COMMENT_BLOCK)) { LOGVAL_PARSER(ctx, LYVE_SYNTAX, "Unexpected end-of-input, non-terminated comment."); return LY_EVALID; } return LY_SUCCESS; #undef COMMENT_NO #undef COMMENT_LINE #undef COMMENT_BLOCK #undef COMMENT_BLOCK_END } /** * @brief Read a quoted string from data. * * @param[in] ctx yang parser context for logging. * @param[in] arg Type of YANG keyword argument expected. * @param[out] word_p Pointer to the read quoted string. * @param[out] word_b Pointer to a dynamically-allocated buffer holding the read quoted string. If not needed, * set to NULL. Otherwise equal to \p word_p. * @param[out] word_len Length of the read quoted string. * @param[out] buf_len Length of the dynamically-allocated buffer \p word_b. * @param[in] indent Current indent (number of YANG spaces). Needed for correct multi-line string * indenation in the final quoted string. * @return LY_ERR values. */ static LY_ERR read_qstring(struct lysp_yang_ctx *ctx, enum yang_arg arg, char **word_p, char **word_b, size_t *word_len, size_t *buf_len) { /* string parsing status: */ #define STRING_ENDED 0 /* string ended */ #define STRING_SINGLE_QUOTED 1 /* string with ' */ #define STRING_DOUBLE_QUOTED 2 /* string with " */ #define STRING_DOUBLE_QUOTED_ESCAPED 3 /* string with " with last character \ */ #define STRING_PAUSED_NEXTSTRING 4 /* string finished, now skipping whitespaces looking for + */ #define STRING_PAUSED_CONTINUE 5 /* string continues after +, skipping whitespaces */ uint8_t string; uint64_t block_indent = 0, current_indent = 0; ly_bool need_buf = 0; uint8_t prefix = 0; const char *c; uint64_t trailing_ws = 0; /* current number of stored trailing whitespace characters */ if (ctx->in->current[0] == '\"') { string = STRING_DOUBLE_QUOTED; current_indent = block_indent = ctx->indent + 1; } else { assert(ctx->in->current[0] == '\''); string = STRING_SINGLE_QUOTED; } MOVE_INPUT(ctx, 1); while (ctx->in->current[0] && string) { switch (string) { case STRING_SINGLE_QUOTED: if (ctx->in->current[0] == '\'') { /* string may be finished, but check for + */ string = STRING_PAUSED_NEXTSTRING; MOVE_INPUT(ctx, 1); } else { /* check and store character */ LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); } break; case STRING_DOUBLE_QUOTED: switch (ctx->in->current[0]) { case '\"': /* string may be finished, but check for + */ string = STRING_PAUSED_NEXTSTRING; MOVE_INPUT(ctx, 1); trailing_ws = 0; break; case '\\': /* special character following */ string = STRING_DOUBLE_QUOTED_ESCAPED; /* the backslash sequence is substituted, so we will need a buffer to store the result */ need_buf = 1; /* move forward to the escaped character */ ++ctx->in->current; /* note that the trailing whitespaces are supposed to be trimmed before substitution of * backslash-escaped characters (RFC 7950, 6.1.3), so we have to zero the trailing whitespaces counter */ trailing_ws = 0; /* since the backslash-escaped character is handled as first non-whitespace character, stop eating indentation */ current_indent = block_indent; break; case ' ': if (current_indent < block_indent) { ++current_indent; MOVE_INPUT(ctx, 1); } else { /* check and store whitespace character */ LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); trailing_ws++; } break; case '\t': if (current_indent < block_indent) { assert(need_buf); current_indent += Y_TAB_SPACES; ctx->indent += Y_TAB_SPACES; for ( ; current_indent > block_indent; --current_indent, --ctx->indent) { /* store leftover spaces from the tab */ c = ctx->in->current; ctx->in->current = " "; LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); ctx->in->current = c; trailing_ws++; } ++ctx->in->current; } else { /* check and store whitespace character */ LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); trailing_ws++; /* additional characters for indentation - only 1 was count in buf_store_char */ ctx->indent += Y_TAB_SPACES - 1; } break; case '\r': /* newline may be escaped */ if ((ctx->in->current[1] != '\n') && strncmp(&ctx->in->current[1], "\\n", 2)) { LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]); return LY_EVALID; } /* skip this character, do not store it */ ++ctx->in->current; /* fallthrough */ case '\n': if (block_indent) { /* we will be removing the indents so we need our own buffer */ need_buf = 1; /* remove trailing tabs and spaces */ (*word_len) = *word_len - trailing_ws; /* restart indentation */ current_indent = 0; } /* check and store character */ LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); /* reset context indentation counter for possible string after this one */ ctx->indent = 0; trailing_ws = 0; break; default: /* first non-whitespace character, stop eating indentation */ current_indent = block_indent; /* check and store character */ LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); trailing_ws = 0; break; } break; case STRING_DOUBLE_QUOTED_ESCAPED: /* string encoded characters */ c = ctx->in->current; switch (ctx->in->current[0]) { case 'n': ctx->in->current = "\n"; /* fix false newline count in buf_store_char() */ ctx->in->line--; break; case 't': ctx->in->current = "\t"; break; case '\"': case '\\': /* ok as is */ break; default: LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Double-quoted string unknown special character '\\%c'.", ctx->in->current[0]); return LY_EVALID; } /* check and store character */ LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix)); string = STRING_DOUBLE_QUOTED; ctx->in->current = c + 1; break; case STRING_PAUSED_NEXTSTRING: switch (ctx->in->current[0]) { case '+': /* string continues */ string = STRING_PAUSED_CONTINUE; need_buf = 1; break; case '\r': if (ctx->in->current[1] != '\n') { LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]); return LY_EVALID; } MOVE_INPUT(ctx, 1); /* fallthrough */ case '\n': LY_IN_NEW_LINE(ctx->in); /* fall through */ case ' ': case '\t': /* just skip */ break; default: /* string is finished */ goto string_end; } MOVE_INPUT(ctx, 1); break; case STRING_PAUSED_CONTINUE: switch (ctx->in->current[0]) { case '\r': if (ctx->in->current[1] != '\n') { LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]); return LY_EVALID; } MOVE_INPUT(ctx, 1); /* fallthrough */ case '\n': LY_IN_NEW_LINE(ctx->in); /* fall through */ case ' ': case '\t': /* skip */ MOVE_INPUT(ctx, 1); break; case '\'': string = STRING_SINGLE_QUOTED; MOVE_INPUT(ctx, 1); break; case '\"': string = STRING_DOUBLE_QUOTED; MOVE_INPUT(ctx, 1); break; case '/': if (ctx->in->current[1] == '/') { /* one-line comment */ MOVE_INPUT(ctx, 2); LY_CHECK_RET(skip_comment(ctx, 1)); break; } else if (ctx->in->current[1] == '*') { /* block comment */ MOVE_INPUT(ctx, 2); LY_CHECK_RET(skip_comment(ctx, 2)); break; } /* not a comment after all */ /* fallthrough */ default: /* it must be quoted again */ LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Both string parts divided by '+' must be quoted."); return LY_EVALID; } break; default: return LY_EINT; } } string_end: if ((arg <= Y_PREF_IDENTIF_ARG) && !(*word_len)) { /* empty identifier */ LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Statement argument is required."); return LY_EVALID; } return LY_SUCCESS; #undef STRING_ENDED #undef STRING_SINGLE_QUOTED #undef STRING_DOUBLE_QUOTED #undef STRING_DOUBLE_QUOTED_ESCAPED #undef STRING_PAUSED_NEXTSTRING #undef STRING_PAUSED_CONTINUE } /** * @brief Get another YANG string from the raw data. * * @param[in] ctx Yang parser context for logging. * @param[in] arg Type of YANG keyword argument expected. * @param[out] flags Optional output argument to get flag of the argument's quoting (LYS_*QUOTED - see * [schema node flags](@ref snodeflags)) * @param[out] word_p Pointer to the read string. Can return NULL if @p arg is #Y_MAYBE_STR_ARG. * @param[out] word_b Pointer to a dynamically-allocated buffer holding the read string. If not needed, * set to NULL. Otherwise equal to @p word_p. * @param[out] word_len Length of the read string. * @return LY_ERR values. */ LY_ERR get_argument(struct lysp_yang_ctx *ctx, enum yang_arg arg, uint16_t *flags, char **word_p, char **word_b, size_t *word_len) { LY_ERR ret; size_t buf_len = 0; uint8_t prefix = 0; ly_bool str_end = 0; /* word buffer - dynamically allocated */ *word_b = NULL; /* word pointer - just a pointer to data */ *word_p = NULL; *word_len = 0; while (!str_end) { switch (ctx->in->current[0]) { case '\'': case '\"': if (*word_len) { /* invalid - quotes cannot be in unquoted string and only optsep, ; or { can follow it */ LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, 1, ctx->in->current, "unquoted string character, optsep, semicolon or opening brace"); ret = LY_EVALID; goto error; } if (flags) { (*flags) |= (ctx->in->current[0] == '\'') ? LYS_SINGLEQUOTED : LYS_DOUBLEQUOTED; } LY_CHECK_GOTO(ret = read_qstring(ctx, arg, word_p, word_b, word_len, &buf_len), error); if (!*word_p) { /* do not return NULL word */ *word_p = ""; } str_end = 1; break; case '/': if (ctx->in->current[1] == '/') { /* one-line comment */ MOVE_INPUT(ctx, 2); LY_CHECK_GOTO(ret = skip_comment(ctx, 1), error); } else if (ctx->in->current[1] == '*') { /* block comment */ MOVE_INPUT(ctx, 2); LY_CHECK_GOTO(ret = skip_comment(ctx, 2), error); } else { /* not a comment after all */ LY_CHECK_GOTO(ret = buf_store_char(ctx, arg, word_p, word_len, word_b, &buf_len, 0, &prefix), error); } break; case ' ': if (*word_len) { /* word is finished */ str_end = 1; break; } MOVE_INPUT(ctx, 1); break; case '\t': if (*word_len) { /* word is finished */ str_end = 1; break; } /* tabs count for 8 spaces */ ctx->indent += Y_TAB_SPACES; ++ctx->in->current; break; case '\r': if (ctx->in->current[1] != '\n') { LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]); ret = LY_EVALID; goto error; } MOVE_INPUT(ctx, 1); /* fallthrough */ case '\n': if (*word_len) { /* word is finished */ str_end = 1; break; } LY_IN_NEW_LINE(ctx->in); MOVE_INPUT(ctx, 1); /* reset indent */ ctx->indent = 0; break; case ';': case '{': if (*word_len || (arg == Y_MAYBE_STR_ARG)) { /* word is finished */ str_end = 1; break; } LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, 1, ctx->in->current, "an argument"); ret = LY_EVALID; goto error; case '}': /* invalid - braces cannot be in unquoted string (opening braces terminates the string and can follow it) */ LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, 1, ctx->in->current, "unquoted string character, optsep, semicolon or opening brace"); ret = LY_EVALID; goto error; case '\0': /* unexpected EOF */ LOGVAL_PARSER(ctx, LY_VCODE_EOF); ret = LY_EVALID; goto error; default: LY_CHECK_GOTO(ret = buf_store_char(ctx, arg, word_p, word_len, word_b, &buf_len, 0, &prefix), error); break; } } /* terminating NULL byte for buf */ if (*word_b) { (*word_b) = ly_realloc(*word_b, (*word_len) + 1); LY_CHECK_ERR_RET(!(*word_b), LOGMEM(PARSER_CTX(ctx)), LY_EMEM); (*word_b)[*word_len] = '\0'; *word_p = *word_b; } return LY_SUCCESS; error: free(*word_b); *word_b = NULL; return ret; } /** * @brief Get another YANG keyword from the raw data. * * @param[in] ctx yang parser context for logging. * @param[out] kw YANG keyword read. * @param[out] word_p Pointer to the keyword in the data. Useful for extension instances. * @param[out] word_len Length of the keyword in the data. Useful for extension instances. * @return LY_ERR values. */ LY_ERR get_keyword(struct lysp_yang_ctx *ctx, enum ly_stmt *kw, char **word_p, size_t *word_len) { uint8_t prefix; const char *word_start; size_t len; if (word_p) { *word_p = NULL; *word_len = 0; } /* first skip "optsep", comments */ while (ctx->in->current[0]) { switch (ctx->in->current[0]) { case '/': if (ctx->in->current[1] == '/') { /* one-line comment */ MOVE_INPUT(ctx, 2); LY_CHECK_RET(skip_comment(ctx, 1)); } else if (ctx->in->current[1] == '*') { /* block comment */ MOVE_INPUT(ctx, 2); LY_CHECK_RET(skip_comment(ctx, 2)); } else { /* error - not a comment after all, keyword cannot start with slash */ LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid identifier first character '/'."); return LY_EVALID; } continue; case '\n': /* skip whitespaces (optsep) */ LY_IN_NEW_LINE(ctx->in); ctx->indent = 0; break; case ' ': /* skip whitespaces (optsep) */ ++ctx->indent; break; case '\t': /* skip whitespaces (optsep) */ ctx->indent += Y_TAB_SPACES; break; case '\r': /* possible CRLF endline */ if (ctx->in->current[1] == '\n') { break; } /* fallthrough */ default: /* either a keyword start or an invalid character */ goto keyword_start; } ly_in_skip(ctx->in, 1); } keyword_start: word_start = ctx->in->current; *kw = lysp_match_kw(ctx->in, &ctx->indent); if (*kw == LY_STMT_SYNTAX_SEMICOLON) { goto success; } else if (*kw == LY_STMT_SYNTAX_LEFT_BRACE) { ctx->depth++; if (ctx->depth > LY_MAX_BLOCK_DEPTH) { LOGERR(PARSER_CTX(ctx), LY_EINVAL, "The maximum number of block nestings has been exceeded."); return LY_EINVAL; } goto success; } else if (*kw == LY_STMT_SYNTAX_RIGHT_BRACE) { ctx->depth--; goto success; } if (*kw != LY_STMT_NONE) { /* make sure we have the whole keyword */ switch (ctx->in->current[0]) { case '\r': if (ctx->in->current[1] != '\n') { LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]); return LY_EVALID; } MOVE_INPUT(ctx, 1); /* fallthrough */ case '\n': case '\t': case ' ': /* mandatory "sep" is just checked, not eaten so nothing in the context is updated */ break; case ':': /* keyword is not actually a keyword, but prefix of an extension. * To avoid repeated check of the prefix syntax, move to the point where the colon was read * and we will be checking the keyword (extension instance) itself */ prefix = 1; MOVE_INPUT(ctx, 1); goto extension; case '{': case ';': /* allowed only for input and output statements which are without arguments */ if ((*kw == LY_STMT_INPUT) || (*kw == LY_STMT_OUTPUT)) { break; } /* fall through */ default: MOVE_INPUT(ctx, 1); LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, (int)(ctx->in->current - word_start), word_start, "a keyword followed by a separator"); return LY_EVALID; } } else { /* still can be an extension */ prefix = 0; extension: while (ctx->in->current[0] && (ctx->in->current[0] != ' ') && (ctx->in->current[0] != '\t') && (ctx->in->current[0] != '\n') && (ctx->in->current[0] != '\r') && (ctx->in->current[0] != '{') && (ctx->in->current[0] != ';')) { uint32_t c = 0; LY_CHECK_ERR_RET(ly_getutf8(&ctx->in->current, &c, &len), LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[-len]), LY_EVALID); ++ctx->indent; /* check character validity */ LY_CHECK_RET(lysp_check_identifierchar((struct lysp_ctx *)ctx, c, ctx->in->current - len == word_start ? 1 : 0, &prefix)); } if (!ctx->in->current[0]) { LOGVAL_PARSER(ctx, LY_VCODE_EOF); return LY_EVALID; } /* prefix is mandatory for extension instances */ if (prefix != 2) { LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, (int)(ctx->in->current - word_start), word_start, "a keyword"); return LY_EVALID; } *kw = LY_STMT_EXTENSION_INSTANCE; } success: if (word_p) { *word_p = (char *)word_start; *word_len = ctx->in->current - word_start; } return LY_SUCCESS; } /** * @brief Parse extension instance substatements. * * @param[in] ctx yang parser context for logging. * @param[in] kw Statement keyword value matching @p word value. * @param[in] word Extension instance substatement name (keyword). * @param[in] word_len Extension instance substatement name length. * @param[in,out] child Children of this extension instance to add to. * @return LY_ERR values. */ static LY_ERR parse_ext_substmt(struct lysp_yang_ctx *ctx, enum ly_stmt kw, char *word, size_t word_len, struct lysp_stmt **child) { char *buf; LY_ERR ret = LY_SUCCESS; enum ly_stmt child_kw; struct lysp_stmt *stmt, *par_child; stmt = calloc(1, sizeof *stmt); LY_CHECK_ERR_RET(!stmt, LOGMEM(NULL), LY_EMEM); /* insert into parent statements */ if (!*child) { *child = stmt; } else { for (par_child = *child; par_child->next; par_child = par_child->next) {} par_child->next = stmt; } /* statement */ LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), word, word_len, &stmt->stmt)); /* get optional argument */ LY_CHECK_RET(get_argument(ctx, Y_MAYBE_STR_ARG, &stmt->flags, &word, &buf, &word_len)); if (word) { INSERT_WORD_GOTO(ctx, buf, stmt->arg, word, word_len, ret, cleanup); } stmt->format = LY_VALUE_SCHEMA; stmt->prefix_data = PARSER_CUR_PMOD(ctx); stmt->kw = kw; YANG_READ_SUBSTMT_FOR_GOTO(ctx, child_kw, word, word_len, ret, cleanup) { LY_CHECK_GOTO(ret = parse_ext_substmt(ctx, child_kw, word, word_len, &stmt->child), cleanup) YANG_READ_SUBSTMT_NEXT_ITER(ctx, child_kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse extension instance. * * @param[in] ctx yang parser context for logging. * @param[in] ext_name Extension instance substatement name (keyword). * @param[in] ext_name_len Extension instance substatement name length. * @param[in] parent Current statement parent. * @param[in] parent_stmt Type of @p parent statement. * @param[in] parent_stmt_index In case of several @p parent_stmt, index of the relevant @p parent statement. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_ext(struct lysp_yang_ctx *ctx, const char *ext_name, size_t ext_name_len, const void *parent, enum ly_stmt parent_stmt, LY_ARRAY_COUNT_TYPE parent_stmt_index, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; struct lysp_ext_instance *e; enum ly_stmt kw; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *exts, e, LY_EMEM); if (!ly_strnchr(ext_name, ':', ext_name_len)) { LOGVAL_PARSER(ctx, LYVE_SYNTAX, "Extension instance \"%.*s\" without the mandatory prefix.", (int)ext_name_len, ext_name); return LY_EVALID; } /* store name */ LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), ext_name, ext_name_len, &e->name)); /* get optional argument */ LY_CHECK_RET(get_argument(ctx, Y_MAYBE_STR_ARG, NULL, &word, &buf, &word_len)); if (word) { INSERT_WORD_GOTO(ctx, buf, e->argument, word, word_len, ret, cleanup); } /* store the rest of information */ e->format = LY_VALUE_SCHEMA; e->parsed = NULL; e->prefix_data = PARSER_CUR_PMOD(ctx); e->parent = (void *)parent; e->parent_stmt = parent_stmt; e->parent_stmt_index = parent_stmt_index; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { LY_CHECK_GOTO(ret = parse_ext_substmt(ctx, kw, word, word_len, &e->child), cleanup) YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse a generic text field without specific constraints. Those are contact, organization, * description, etc... * * @param[in] ctx yang parser context for logging. * @param[in] parent Current statement parent. * @param[in] parent_stmt Type of statement in @p value. * @param[in] parent_stmt_index In case of several @p parent_stmt, index of the relevant @p parent statement. * @param[in,out] value Place to store the parsed value. * @param[in] arg Type of the YANG keyword argument (of the value). * @param[out] flags Optional output argument to get flag of the argument's quoting (LYS_*QUOTED - see * [schema node flags](@ref snodeflags)) * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_text_field(struct lysp_yang_ctx *ctx, const void *parent, enum ly_stmt parent_stmt, uint32_t parent_stmt_index, const char **value, enum yang_arg arg, uint16_t *flags, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (*value) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(parent_stmt)); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, arg, flags, &word, &buf, &word_len)); /* store value and spend buf if allocated */ INSERT_WORD_GOTO(ctx, buf, *value, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, parent, parent_stmt, parent_stmt_index, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(parent_stmt)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the yang-version statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] mod Module to fill. * @return LY_ERR values. */ static LY_ERR parse_yangversion(struct lysp_yang_ctx *ctx, struct lysp_module *mod) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (mod->version) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "yang-version"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); if ((word_len == 1) && !strncmp(word, "1", word_len)) { mod->version = LYS_VERSION_1_0; } else if ((word_len == ly_strlen_const("1.1")) && !strncmp(word, "1.1", word_len)) { mod->version = LYS_VERSION_1_1; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "yang-version"); free(buf); return LY_EVALID; } free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, mod, LY_STMT_YANG_VERSION, 0, &mod->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "yang-version"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the belongs-to statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] submod Submodule to fill. * @return LY_ERR values. */ static LY_ERR parse_belongsto(struct lysp_yang_ctx *ctx, struct lysp_submodule *submod) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (submod->prefix) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "belongs-to"); return LY_EVALID; } /* get value, it must match the main module */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); if (ly_strncmp(PARSER_CUR_PMOD(ctx)->mod->name, word, word_len)) { LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Submodule \"belongs-to\" value \"%.*s\" does not match its module name \"%s\".", (int)word_len, word, PARSER_CUR_PMOD(ctx)->mod->name); free(buf); return LY_EVALID; } free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_PREFIX: LY_CHECK_RET(parse_text_field(ctx, submod->prefix, LY_STMT_PREFIX, 0, &submod->prefix, Y_IDENTIF_ARG, NULL, &submod->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, submod, LY_STMT_BELONGS_TO, 0, &submod->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "belongs-to"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } /* mandatory substatements */ if (!submod->prefix) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "prefix", "belongs-to"); return LY_EVALID; } cleanup: return ret; } /** * @brief Parse the revision-date statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] rev Buffer to store the parsed value in. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_revisiondate(struct lysp_yang_ctx *ctx, char *rev, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (rev[0]) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "revision-date"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); /* check value */ if (lysp_check_date((struct lysp_ctx *)ctx, word, word_len, "revision-date")) { free(buf); return LY_EVALID; } /* store value and spend buf if allocated */ strncpy(rev, word, word_len); free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, rev, LY_STMT_REVISION_DATE, 0, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "revision-date"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the include statement. * * @param[in] ctx yang parser context for logging. * @param[in] module_name Name of the module to check name collisions. * @param[in,out] includes Parsed includes to add to. * @return LY_ERR values. */ static LY_ERR parse_include(struct lysp_yang_ctx *ctx, const char *module_name, struct lysp_include **includes) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_include *inc; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *includes, inc, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, inc->name, word, word_len, ret, cleanup); /* submodules share the namespace with the module names, so there must not be * a module of the same name in the context, no need for revision matching */ if (!strcmp(module_name, inc->name) || ly_ctx_get_module_latest(PARSER_CTX(ctx), inc->name)) { LOGVAL_PARSER(ctx, LY_VCODE_NAME2_COL, "module", "submodule", inc->name); return LY_EVALID; } YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: PARSER_CHECK_STMTVER2_RET(ctx, "description", "include"); LY_CHECK_RET(parse_text_field(ctx, inc->dsc, LY_STMT_DESCRIPTION, 0, &inc->dsc, Y_STR_ARG, NULL, &inc->exts)); break; case LY_STMT_REFERENCE: PARSER_CHECK_STMTVER2_RET(ctx, "reference", "include"); LY_CHECK_RET(parse_text_field(ctx, inc->ref, LY_STMT_REFERENCE, 0, &inc->ref, Y_STR_ARG, NULL, &inc->exts)); break; case LY_STMT_REVISION_DATE: LY_CHECK_RET(parse_revisiondate(ctx, inc->rev, &inc->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, inc, LY_STMT_INCLUDE, 0, &inc->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "include"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, inc->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the import statement. * * @param[in] ctx yang parser context for logging. * @param[in] module_prefix Prefix of the module to check prefix collisions. * @param[in,out] imports Parsed imports to add to. * @return LY_ERR values. */ static LY_ERR parse_import(struct lysp_yang_ctx *ctx, const char *module_prefix, struct lysp_import **imports) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_import *imp; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *imports, imp, LY_EVALID); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, imp->name, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_PREFIX: LY_CHECK_RET(parse_text_field(ctx, imp->prefix, LY_STMT_PREFIX, 0, &imp->prefix, Y_IDENTIF_ARG, NULL, &imp->exts)); LY_CHECK_RET(lysp_check_prefix((struct lysp_ctx *)ctx, *imports, module_prefix, &imp->prefix), LY_EVALID); break; case LY_STMT_DESCRIPTION: PARSER_CHECK_STMTVER2_RET(ctx, "description", "import"); LY_CHECK_RET(parse_text_field(ctx, imp->dsc, LY_STMT_DESCRIPTION, 0, &imp->dsc, Y_STR_ARG, NULL, &imp->exts)); break; case LY_STMT_REFERENCE: PARSER_CHECK_STMTVER2_RET(ctx, "reference", "import"); LY_CHECK_RET(parse_text_field(ctx, imp->ref, LY_STMT_REFERENCE, 0, &imp->ref, Y_STR_ARG, NULL, &imp->exts)); break; case LY_STMT_REVISION_DATE: LY_CHECK_RET(parse_revisiondate(ctx, imp->rev, &imp->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, imp, LY_STMT_IMPORT, 0, &imp->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "import"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, imp->exts, ret, cleanup); } /* mandatory substatements */ LY_CHECK_ERR_RET(!imp->prefix, LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "prefix", "import"), LY_EVALID); cleanup: return ret; } /** * @brief Parse the revision statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] revs Parsed revisions to add to. * @return LY_ERR values. */ static LY_ERR parse_revision(struct lysp_yang_ctx *ctx, struct lysp_revision **revs) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_revision *rev; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *revs, rev, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); /* check value */ if (lysp_check_date((struct lysp_ctx *)ctx, word, word_len, "revision")) { free(buf); return LY_EVALID; } strncpy(rev->date, word, word_len); free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, rev->dsc, LY_STMT_DESCRIPTION, 0, &rev->dsc, Y_STR_ARG, NULL, &rev->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, rev->ref, LY_STMT_REFERENCE, 0, &rev->ref, Y_STR_ARG, NULL, &rev->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, rev, LY_STMT_REVISION, 0, &rev->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "revision"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, rev->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse a generic text field that can have more instances such as base. * * @param[in] ctx yang parser context for logging. * @param[in] parent Current statement parent. * @param[in] parent_stmt Type of @p parent statement. * @param[in,out] texts Parsed values to add to. * @param[in] arg Type of the expected argument. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_text_fields(struct lysp_yang_ctx *ctx, enum ly_stmt parent_stmt, const char ***texts, enum yang_arg arg, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; const char **item; size_t word_len; enum ly_stmt kw; /* allocate new pointer */ LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *texts, item, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, arg, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, *item, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, *texts, parent_stmt, LY_ARRAY_COUNT(*texts) - 1, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(parent_stmt)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse a generic text field that can have more instances such as base. * * @param[in] ctx yang parser context for logging. * @param[in] parent_stmt Type of statement stored in @p qnames. * @param[in,out] qnames Parsed qnames to add to. * @param[in] arg Type of the expected argument. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_qnames(struct lysp_yang_ctx *ctx, enum ly_stmt parent_stmt, struct lysp_qname **qnames, enum yang_arg arg, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; struct lysp_qname *item; size_t word_len; enum ly_stmt kw; /* allocate new pointer */ LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *qnames, item, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, arg, &item->flags, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, item->str, word, word_len, ret, cleanup); item->mod = PARSER_CUR_PMOD(ctx); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, *qnames, parent_stmt, LY_ARRAY_COUNT(*qnames) - 1, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(parent_stmt)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the config statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] flags Flags to add to. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_config(struct lysp_yang_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (*flags & LYS_CONFIG_MASK) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "config"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) { *flags |= LYS_CONFIG_W; } else if ((word_len == ly_strlen_const("false")) && !strncmp(word, "false", word_len)) { *flags |= LYS_CONFIG_R; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "config"); free(buf); return LY_EVALID; } free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, flags, LY_STMT_CONFIG, 0, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "config"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the mandatory statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] flags Flags to add to. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_mandatory(struct lysp_yang_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (*flags & LYS_MAND_MASK) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "mandatory"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) { *flags |= LYS_MAND_TRUE; } else if ((word_len == ly_strlen_const("false")) && !strncmp(word, "false", word_len)) { *flags |= LYS_MAND_FALSE; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "mandatory"); free(buf); return LY_EVALID; } free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, flags, LY_STMT_MANDATORY, 0, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "mandatory"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse a restriction such as range or length. * * @param[in] ctx yang parser context for logging. * @param[in] restr_kw Type of this particular restriction. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_restr(struct lysp_yang_ctx *ctx, enum ly_stmt restr_kw, struct lysp_restr *restr) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, &restr->arg.flags, &word, &buf, &word_len)); CHECK_NONEMPTY(ctx, word_len, lyplg_ext_stmt2str(restr_kw)); INSERT_WORD_GOTO(ctx, buf, restr->arg.str, word, word_len, ret, cleanup); restr->arg.mod = PARSER_CUR_PMOD(ctx); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, restr->dsc, LY_STMT_DESCRIPTION, 0, &restr->dsc, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, restr->ref, LY_STMT_REFERENCE, 0, &restr->ref, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_ERROR_APP_TAG: LY_CHECK_RET(parse_text_field(ctx, restr, LY_STMT_ERROR_APP_TAG, 0, &restr->eapptag, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_ERROR_MESSAGE: LY_CHECK_RET(parse_text_field(ctx, restr, LY_STMT_ERROR_MESSAGE, 0, &restr->emsg, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, restr, restr_kw, 0, &restr->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(restr_kw)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, restr->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse a restriction that can have more instances such as must. * * @param[in] ctx yang parser context for logging. * @param[in] restr_kw Type of this particular restriction. * @param[in,out] restrs Restrictions to add to. * @return LY_ERR values. */ static LY_ERR parse_restrs(struct lysp_yang_ctx *ctx, enum ly_stmt restr_kw, struct lysp_restr **restrs) { struct lysp_restr *restr; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *restrs, restr, LY_EMEM); return parse_restr(ctx, restr_kw, restr); } /** * @brief Parse the status statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] flags Flags to add to. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ static LY_ERR parse_status(struct lysp_yang_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (*flags & LYS_STATUS_MASK) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "status"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); if ((word_len == ly_strlen_const("current")) && !strncmp(word, "current", word_len)) { *flags |= LYS_STATUS_CURR; } else if ((word_len == ly_strlen_const("deprecated")) && !strncmp(word, "deprecated", word_len)) { *flags |= LYS_STATUS_DEPRC; } else if ((word_len == ly_strlen_const("obsolete")) && !strncmp(word, "obsolete", word_len)) { *flags |= LYS_STATUS_OBSLT; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "status"); free(buf); return LY_EVALID; } free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, flags, LY_STMT_STATUS, 0, exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "status"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the when statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] when_p When pointer to parse to. * @return LY_ERR values. */ LY_ERR parse_when(struct lysp_yang_ctx *ctx, struct lysp_when **when_p) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_when *when; struct lysf_ctx fctx = {.ctx = PARSER_CTX(ctx)}; if (*when_p) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "when"); return LY_EVALID; } when = calloc(1, sizeof *when); LY_CHECK_ERR_GOTO(!when, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); CHECK_NONEMPTY(ctx, word_len, "when"); INSERT_WORD_GOTO(ctx, buf, when->cond, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: ret = parse_text_field(ctx, when->dsc, LY_STMT_DESCRIPTION, 0, &when->dsc, Y_STR_ARG, NULL, &when->exts); LY_CHECK_GOTO(ret, cleanup); break; case LY_STMT_REFERENCE: ret = parse_text_field(ctx, when->ref, LY_STMT_REFERENCE, 0, &when->ref, Y_STR_ARG, NULL, &when->exts); LY_CHECK_GOTO(ret, cleanup); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, *when_p, LY_STMT_WHEN, 0, &when->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "when"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, when->exts, ret, cleanup); } cleanup: if (ret) { lysp_when_free(&fctx, when); free(when); } else { *when_p = when; } return ret; } /** * @brief Parse the anydata or anyxml statement. * * @param[in] ctx yang parser context for logging. * @param[in] any_kw Type of this particular keyword. * @param[in] parent Node parent. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_any(struct lysp_yang_ctx *ctx, enum ly_stmt any_kw, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; struct lysp_node_anydata *any; enum ly_stmt kw; /* create new structure and insert into siblings */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, any, next, LY_EMEM); any->nodetype = any_kw == LY_STMT_ANYDATA ? LYS_ANYDATA : LYS_ANYXML; any->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, any->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &any->flags, &any->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, any->dsc, LY_STMT_DESCRIPTION, 0, &any->dsc, Y_STR_ARG, NULL, &any->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &any->iffeatures, Y_STR_ARG, &any->exts)); break; case LY_STMT_MANDATORY: LY_CHECK_RET(parse_mandatory(ctx, &any->flags, &any->exts)); break; case LY_STMT_MUST: LY_CHECK_RET(parse_restrs(ctx, kw, &any->musts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, any->ref, LY_STMT_REFERENCE, 0, &any->ref, Y_STR_ARG, NULL, &any->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &any->flags, &any->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &any->when)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, any, any_kw, 0, &any->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(any_kw)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, any->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the value or position statement. Substatement of type enum statement. * * @param[in] ctx yang parser context for logging. * @param[in] val_kw Type of this particular keyword. * @param[in,out] enm Structure to fill. * @return LY_ERR values. */ LY_ERR parse_type_enum_value_pos(struct lysp_yang_ctx *ctx, enum ly_stmt val_kw, struct lysp_type_enum *enm) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word, *ptr; size_t word_len; long long num = 0; unsigned long long unum = 0; enum ly_stmt kw; if (enm->flags & LYS_SET_VALUE) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } enm->flags |= LYS_SET_VALUE; /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); if (!word_len || (word[0] == '+') || ((word[0] == '0') && (word_len > 1)) || ((val_kw == LY_STMT_POSITION) && !strncmp(word, "-0", 2))) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } errno = 0; if (val_kw == LY_STMT_VALUE) { num = strtoll(word, &ptr, LY_BASE_DEC); if ((num < INT64_C(-2147483648)) || (num > INT64_C(2147483647))) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } } else { unum = strtoull(word, &ptr, LY_BASE_DEC); if (unum > UINT64_C(4294967295)) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } } /* we have not parsed the whole argument */ if ((size_t)(ptr - word) != word_len) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } if (errno == ERANGE) { LOGVAL_PARSER(ctx, LY_VCODE_OOB, (int)word_len, word, lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } if (val_kw == LY_STMT_VALUE) { enm->value = num; } else { enm->value = unum; } YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: ret = parse_ext(ctx, word, word_len, enm, val_kw, 0, &enm->exts); LY_CHECK_GOTO(ret, cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(val_kw)); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the enum or bit statement. Substatement of type statement. * * @param[in] ctx yang parser context for logging. * @param[in] enum_kw Type of this particular keyword. * @param[in,out] enums Enums or bits to add to. * @return LY_ERR values. */ static LY_ERR parse_type_enum(struct lysp_yang_ctx *ctx, enum ly_stmt enum_kw, struct lysp_type_enum **enums) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_type_enum *enm; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *enums, enm, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, enum_kw == LY_STMT_ENUM ? Y_STR_ARG : Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); if (enum_kw == LY_STMT_ENUM) { ret = lysp_check_enum_name((struct lysp_ctx *)ctx, (const char *)word, word_len); LY_CHECK_ERR_RET(ret, free(buf), ret); } /* else nothing specific for YANG_BIT */ INSERT_WORD_GOTO(ctx, buf, enm->name, word, word_len, ret, cleanup); CHECK_UNIQUENESS(ctx, *enums, name, lyplg_ext_stmt2str(enum_kw), enm->name); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, enm->dsc, LY_STMT_DESCRIPTION, 0, &enm->dsc, Y_STR_ARG, NULL, &enm->exts)); break; case LY_STMT_IF_FEATURE: PARSER_CHECK_STMTVER2_RET(ctx, "if-feature", lyplg_ext_stmt2str(enum_kw)); LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &enm->iffeatures, Y_STR_ARG, &enm->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, enm->ref, LY_STMT_REFERENCE, 0, &enm->ref, Y_STR_ARG, NULL, &enm->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &enm->flags, &enm->exts)); break; case LY_STMT_VALUE: LY_CHECK_ERR_RET(enum_kw == LY_STMT_BIT, LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(enum_kw)), LY_EVALID); LY_CHECK_RET(parse_type_enum_value_pos(ctx, kw, enm)); break; case LY_STMT_POSITION: LY_CHECK_ERR_RET(enum_kw == LY_STMT_ENUM, LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(enum_kw)), LY_EVALID); LY_CHECK_RET(parse_type_enum_value_pos(ctx, kw, enm)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, enm, enum_kw, 0, &enm->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(enum_kw)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, enm->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the fraction-digits statement. Substatement of type statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] type Type to fill. * @return LY_ERR values. */ static LY_ERR parse_type_fracdigits(struct lysp_yang_ctx *ctx, struct lysp_type *type) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word, *ptr; size_t word_len; unsigned long long num; enum ly_stmt kw; if (type->fraction_digits) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "fraction-digits"); return LY_EVALID; } /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if (!word_len || (word[0] == '0') || !isdigit(word[0])) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "fraction-digits"); ret = LY_EVALID; goto cleanup; } errno = 0; num = strtoull(word, &ptr, LY_BASE_DEC); /* we have not parsed the whole argument */ if ((size_t)(ptr - word) != word_len) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "fraction-digits"); ret = LY_EVALID; goto cleanup; } if ((errno == ERANGE) || (num > LY_TYPE_DEC64_FD_MAX)) { LOGVAL_PARSER(ctx, LY_VCODE_OOB, (int)word_len, word, "fraction-digits"); ret = LY_EVALID; goto cleanup; } type->fraction_digits = num; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, type, LY_STMT_FRACTION_DIGITS, 0, &type->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "fraction-digits"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the require-instance statement. Substatement of type statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] type Type to fill. * @return LY_ERR values. */ static LY_ERR parse_type_reqinstance(struct lysp_yang_ctx *ctx, struct lysp_type *type) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word; size_t word_len; enum ly_stmt kw; if (type->flags & LYS_SET_REQINST) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "require-instance"); return LY_EVALID; } type->flags |= LYS_SET_REQINST; /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) { type->require_instance = 1; } else if ((word_len != ly_strlen_const("false")) || strncmp(word, "false", word_len)) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "require-instance"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, type, LY_STMT_REQUIRE_INSTANCE, 0, &type->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "require-instance"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the modifier statement. Substatement of type pattern statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] restr Restriction to fill. * @return LY_ERR values. */ static LY_ERR parse_type_pattern_modifier(struct lysp_yang_ctx *ctx, struct lysp_restr *restr) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word; size_t word_len; enum ly_stmt kw; if (restr->arg.str[0] == LYSP_RESTR_PATTERN_NACK) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "modifier"); return LY_EVALID; } /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if ((word_len != ly_strlen_const("invert-match")) || strncmp(word, "invert-match", word_len)) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "modifier"); ret = LY_EVALID; goto cleanup; } /* replace the value in the dictionary */ buf = malloc(strlen(restr->arg.str) + 1); LY_CHECK_ERR_GOTO(!buf, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); strcpy(buf, restr->arg.str); lydict_remove(PARSER_CTX(ctx), restr->arg.str); assert(buf[0] == LYSP_RESTR_PATTERN_ACK); buf[0] = LYSP_RESTR_PATTERN_NACK; ret = lydict_insert_zc(PARSER_CTX(ctx), buf, &restr->arg.str); buf = NULL; LY_CHECK_GOTO(ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, restr, LY_STMT_MODIFIER, 0, &restr->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "modifier"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the pattern statement. Substatement of type statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] patterns Restrictions to add to. * @return LY_ERR values. */ static LY_ERR parse_type_pattern(struct lysp_yang_ctx *ctx, struct lysp_restr **patterns) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_restr *restr; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *patterns, restr, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, &restr->arg.flags, &word, &buf, &word_len)); /* add special meaning first byte */ if (buf) { buf = ly_realloc(buf, word_len + 2); word = buf; } else { buf = malloc(word_len + 2); } LY_CHECK_ERR_RET(!buf, LOGMEM(PARSER_CTX(ctx)), LY_EMEM); if (word_len) { memmove(buf + 1, word, word_len); } buf[0] = LYSP_RESTR_PATTERN_ACK; /* pattern's default regular-match flag */ buf[word_len + 1] = '\0'; /* terminating NULL byte */ LY_CHECK_RET(lydict_insert_zc(PARSER_CTX(ctx), buf, &restr->arg.str)); restr->arg.mod = PARSER_CUR_PMOD(ctx); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, restr->dsc, LY_STMT_DESCRIPTION, 0, &restr->dsc, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, restr->ref, LY_STMT_REFERENCE, 0, &restr->ref, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_ERROR_APP_TAG: LY_CHECK_RET(parse_text_field(ctx, restr, LY_STMT_ERROR_APP_TAG, 0, &restr->eapptag, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_ERROR_MESSAGE: LY_CHECK_RET(parse_text_field(ctx, restr, LY_STMT_ERROR_MESSAGE, 0, &restr->emsg, Y_STR_ARG, NULL, &restr->exts)); break; case LY_STMT_MODIFIER: PARSER_CHECK_STMTVER2_RET(ctx, "modifier", "pattern"); LY_CHECK_RET(parse_type_pattern_modifier(ctx, restr)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, restr, LY_STMT_PATTERN, 0, &restr->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "pattern"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, restr->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the type statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] type Type to wrote to. * @return LY_ERR values. */ static LY_ERR parse_type(struct lysp_yang_ctx *ctx, struct lysp_type *type) { LY_ERR ret = LY_SUCCESS; char *buf, *word; const char *str_path = NULL; size_t word_len; enum ly_stmt kw; struct lysp_type *nest_type; if (type->name) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "type"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_PREF_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, type->name, word, word_len, ret, cleanup); /* set module */ type->pmod = PARSER_CUR_PMOD(ctx); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_BASE: LY_CHECK_RET(parse_text_fields(ctx, LY_STMT_BASE, &type->bases, Y_PREF_IDENTIF_ARG, &type->exts)); type->flags |= LYS_SET_BASE; break; case LY_STMT_BIT: LY_CHECK_RET(parse_type_enum(ctx, kw, &type->bits)); type->flags |= LYS_SET_BIT; break; case LY_STMT_ENUM: LY_CHECK_RET(parse_type_enum(ctx, kw, &type->enums)); type->flags |= LYS_SET_ENUM; break; case LY_STMT_FRACTION_DIGITS: LY_CHECK_RET(parse_type_fracdigits(ctx, type)); type->flags |= LYS_SET_FRDIGITS; break; case LY_STMT_LENGTH: if (type->length) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(kw)); return LY_EVALID; } type->length = calloc(1, sizeof *type->length); LY_CHECK_ERR_RET(!type->length, LOGMEM(PARSER_CTX(ctx)), LY_EMEM); LY_CHECK_RET(parse_restr(ctx, kw, type->length)); type->flags |= LYS_SET_LENGTH; break; case LY_STMT_PATH: if (type->path) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(LY_STMT_PATH)); return LY_EVALID; } /* Usually, in the parser_yang.c, the result of the parsing is stored directly in the * corresponding structure, so in case of failure, the lysp_module_free function will take * care of removing the parsed value from the dictionary. But in this case, it is not possible * to rely on lysp_module_free because the result of the parsing is stored in a local variable. */ LY_CHECK_ERR_RET(ret = parse_text_field(ctx, type, LY_STMT_PATH, 0, &str_path, Y_STR_ARG, NULL, &type->exts), lydict_remove(PARSER_CTX(ctx), str_path), ret); ret = ly_path_parse(PARSER_CTX(ctx), NULL, str_path, 0, 1, LY_PATH_BEGIN_EITHER, LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &type->path); /* Moreover, even if successful, the string is removed from the dictionary. */ lydict_remove(PARSER_CTX(ctx), str_path); LY_CHECK_RET(ret); type->flags |= LYS_SET_PATH; break; case LY_STMT_PATTERN: LY_CHECK_RET(parse_type_pattern(ctx, &type->patterns)); type->flags |= LYS_SET_PATTERN; break; case LY_STMT_RANGE: if (type->range) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(kw)); return LY_EVALID; } type->range = calloc(1, sizeof *type->range); LY_CHECK_ERR_RET(!type->range, LOGMEM(PARSER_CTX(ctx)), LY_EMEM); LY_CHECK_RET(parse_restr(ctx, kw, type->range)); type->flags |= LYS_SET_RANGE; break; case LY_STMT_REQUIRE_INSTANCE: LY_CHECK_RET(parse_type_reqinstance(ctx, type)); /* LYS_SET_REQINST checked and set inside parse_type_reqinstance() */ break; case LY_STMT_TYPE: LY_ARRAY_NEW_RET(PARSER_CTX(ctx), type->types, nest_type, LY_EMEM); LY_CHECK_RET(parse_type(ctx, nest_type)); type->flags |= LYS_SET_TYPE; break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, type, LY_STMT_TYPE, 0, &type->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "type"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, type->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the leaf statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_leaf(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_leaf *leaf; /* create new leaf structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, leaf, next, LY_EMEM); leaf->nodetype = LYS_LEAF; leaf->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, leaf->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &leaf->flags, &leaf->exts)); break; case LY_STMT_DEFAULT: LY_CHECK_RET(parse_text_field(ctx, &leaf->dflt, LY_STMT_DEFAULT, 0, &leaf->dflt.str, Y_STR_ARG, &leaf->dflt.flags, &leaf->exts)); leaf->dflt.mod = PARSER_CUR_PMOD(ctx); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, leaf->dsc, LY_STMT_DESCRIPTION, 0, &leaf->dsc, Y_STR_ARG, NULL, &leaf->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &leaf->iffeatures, Y_STR_ARG, &leaf->exts)); break; case LY_STMT_MANDATORY: LY_CHECK_RET(parse_mandatory(ctx, &leaf->flags, &leaf->exts)); break; case LY_STMT_MUST: LY_CHECK_RET(parse_restrs(ctx, kw, &leaf->musts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, leaf->ref, LY_STMT_REFERENCE, 0, &leaf->ref, Y_STR_ARG, NULL, &leaf->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &leaf->flags, &leaf->exts)); break; case LY_STMT_TYPE: LY_CHECK_RET(parse_type(ctx, &leaf->type)); break; case LY_STMT_UNITS: LY_CHECK_RET(parse_text_field(ctx, leaf->units, LY_STMT_UNITS, 0, &leaf->units, Y_STR_ARG, NULL, &leaf->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &leaf->when)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, leaf, LY_STMT_LEAF, 0, &leaf->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "leaf"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, leaf->exts, ret, cleanup); } /* mandatory substatements */ if (!leaf->type.name) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "type", "leaf"); return LY_EVALID; } cleanup: return ret; } /** * @brief Parse the max-elements statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] max Value to write to. * @param[in,out] flags Flags to write to. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ LY_ERR parse_maxelements(struct lysp_yang_ctx *ctx, uint32_t *max, uint16_t *flags, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word, *ptr; size_t word_len; unsigned long long num; enum ly_stmt kw; if (*flags & LYS_SET_MAX) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "max-elements"); return LY_EVALID; } *flags |= LYS_SET_MAX; /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if (!word_len || (word[0] == '0') || ((word[0] != 'u') && !isdigit(word[0]))) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "max-elements"); ret = LY_EVALID; goto cleanup; } if (ly_strncmp("unbounded", word, word_len)) { errno = 0; num = strtoull(word, &ptr, LY_BASE_DEC); /* we have not parsed the whole argument */ if ((size_t)(ptr - word) != word_len) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "max-elements"); ret = LY_EVALID; goto cleanup; } if ((errno == ERANGE) || (num > UINT32_MAX)) { LOGVAL_PARSER(ctx, LY_VCODE_OOB, (int)word_len, word, "max-elements"); ret = LY_EVALID; goto cleanup; } *max = num; } else { /* unbounded */ *max = 0; } YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, max, LY_STMT_MAX_ELEMENTS, 0, exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "max-elements"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the min-elements statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] min Value to write to. * @param[in,out] flags Flags to write to. * @param[in,out] exts Extension instances to add to. * @return LY_ERR values. */ LY_ERR parse_minelements(struct lysp_yang_ctx *ctx, uint32_t *min, uint16_t *flags, struct lysp_ext_instance **exts) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word, *ptr; size_t word_len; unsigned long long num; enum ly_stmt kw; if (*flags & LYS_SET_MIN) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "min-elements"); return LY_EVALID; } *flags |= LYS_SET_MIN; /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if (!word_len || !isdigit(word[0]) || ((word[0] == '0') && (word_len > 1))) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "min-elements"); ret = LY_EVALID; goto cleanup; } errno = 0; num = strtoull(word, &ptr, LY_BASE_DEC); /* we have not parsed the whole argument */ if ((size_t)(ptr - word) != word_len) { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "min-elements"); ret = LY_EVALID; goto cleanup; } if ((errno == ERANGE) || (num > UINT32_MAX)) { LOGVAL_PARSER(ctx, LY_VCODE_OOB, (int)word_len, word, "min-elements"); ret = LY_EVALID; goto cleanup; } *min = num; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, min, LY_STMT_MIN_ELEMENTS, 0, exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "min-elements"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the ordered-by statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] llist List or leaf-list to fill. * @return LY_ERR values. */ static LY_ERR parse_orderedby(struct lysp_yang_ctx *ctx, struct lysp_node *llist) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word; size_t word_len; enum ly_stmt kw; if (llist->flags & LYS_ORDBY_MASK) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "ordered-by"); return LY_EVALID; } /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if ((word_len == ly_strlen_const("system")) && !strncmp(word, "system", word_len)) { llist->flags |= LYS_ORDBY_SYSTEM; } else if ((word_len == ly_strlen_const("user")) && !strncmp(word, "user", word_len)) { llist->flags |= LYS_ORDBY_USER; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "ordered-by"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, llist, LY_STMT_ORDERED_BY, 0, &llist->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "ordered-by"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: free(buf); return ret; } /** * @brief Parse the leaf-list statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * * @return LY_ERR values. */ LY_ERR parse_leaflist(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_leaflist *llist; /* create new leaf-list structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, llist, next, LY_EMEM); llist->nodetype = LYS_LEAFLIST; llist->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, llist->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &llist->flags, &llist->exts)); break; case LY_STMT_DEFAULT: PARSER_CHECK_STMTVER2_RET(ctx, "default", "leaf-list"); LY_CHECK_RET(parse_qnames(ctx, LY_STMT_DEFAULT, &llist->dflts, Y_STR_ARG, &llist->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, llist->dsc, LY_STMT_DESCRIPTION, 0, &llist->dsc, Y_STR_ARG, NULL, &llist->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &llist->iffeatures, Y_STR_ARG, &llist->exts)); break; case LY_STMT_MAX_ELEMENTS: LY_CHECK_RET(parse_maxelements(ctx, &llist->max, &llist->flags, &llist->exts)); break; case LY_STMT_MIN_ELEMENTS: LY_CHECK_RET(parse_minelements(ctx, &llist->min, &llist->flags, &llist->exts)); break; case LY_STMT_MUST: LY_CHECK_RET(parse_restrs(ctx, kw, &llist->musts)); break; case LY_STMT_ORDERED_BY: LY_CHECK_RET(parse_orderedby(ctx, &llist->node)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, llist->ref, LY_STMT_REFERENCE, 0, &llist->ref, Y_STR_ARG, NULL, &llist->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &llist->flags, &llist->exts)); break; case LY_STMT_TYPE: LY_CHECK_RET(parse_type(ctx, &llist->type)); break; case LY_STMT_UNITS: LY_CHECK_RET(parse_text_field(ctx, llist->units, LY_STMT_UNITS, 0, &llist->units, Y_STR_ARG, NULL, &llist->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &llist->when)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, llist, LY_STMT_LEAF_LIST, 0, &llist->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "llist"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, llist->exts, ret, cleanup); } /* mandatory substatements */ if (!llist->type.name) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "type", "leaf-list"); return LY_EVALID; } cleanup: return ret; } /** * @brief Parse the refine statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] refines Refines to add to. * @return LY_ERR values. */ static LY_ERR parse_refine(struct lysp_yang_ctx *ctx, struct lysp_refine **refines) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_refine *rf; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *refines, rf, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); CHECK_NONEMPTY(ctx, word_len, "refine"); INSERT_WORD_GOTO(ctx, buf, rf->nodeid, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &rf->flags, &rf->exts)); break; case LY_STMT_DEFAULT: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_DEFAULT, &rf->dflts, Y_STR_ARG, &rf->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, rf->dsc, LY_STMT_DESCRIPTION, 0, &rf->dsc, Y_STR_ARG, NULL, &rf->exts)); break; case LY_STMT_IF_FEATURE: PARSER_CHECK_STMTVER2_RET(ctx, "if-feature", "refine"); LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &rf->iffeatures, Y_STR_ARG, &rf->exts)); break; case LY_STMT_MAX_ELEMENTS: LY_CHECK_RET(parse_maxelements(ctx, &rf->max, &rf->flags, &rf->exts)); break; case LY_STMT_MIN_ELEMENTS: LY_CHECK_RET(parse_minelements(ctx, &rf->min, &rf->flags, &rf->exts)); break; case LY_STMT_MUST: LY_CHECK_RET(parse_restrs(ctx, kw, &rf->musts)); break; case LY_STMT_MANDATORY: LY_CHECK_RET(parse_mandatory(ctx, &rf->flags, &rf->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, rf->ref, LY_STMT_REFERENCE, 0, &rf->ref, Y_STR_ARG, NULL, &rf->exts)); break; case LY_STMT_PRESENCE: LY_CHECK_RET(parse_text_field(ctx, rf->presence, LY_STMT_PRESENCE, 0, &rf->presence, Y_STR_ARG, NULL, &rf->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, rf, LY_STMT_REFINE, 0, &rf->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "refine"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, rf->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the typedef statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] typedefs Typedefs to add to. * @return LY_ERR values. */ static LY_ERR parse_typedef(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_tpdf **typedefs) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_tpdf *tpdf; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *typedefs, tpdf, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, tpdf->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DEFAULT: LY_CHECK_RET(parse_text_field(ctx, &tpdf->dflt, LY_STMT_DEFAULT, 0, &tpdf->dflt.str, Y_STR_ARG, &tpdf->dflt.flags, &tpdf->exts)); tpdf->dflt.mod = PARSER_CUR_PMOD(ctx); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, tpdf->dsc, LY_STMT_DESCRIPTION, 0, &tpdf->dsc, Y_STR_ARG, NULL, &tpdf->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, tpdf->ref, LY_STMT_REFERENCE, 0, &tpdf->ref, Y_STR_ARG, NULL, &tpdf->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &tpdf->flags, &tpdf->exts)); break; case LY_STMT_TYPE: LY_CHECK_RET(parse_type(ctx, &tpdf->type)); break; case LY_STMT_UNITS: LY_CHECK_RET(parse_text_field(ctx, tpdf->units, LY_STMT_UNITS, 0, &tpdf->units, Y_STR_ARG, NULL, &tpdf->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, tpdf, LY_STMT_TYPEDEF, 0, &tpdf->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "typedef"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, tpdf->exts, ret, cleanup); } /* mandatory substatements */ if (!tpdf->type.name) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "type", "typedef"); return LY_EVALID; } /* store data for collision check */ if (parent) { assert(ctx->main_ctx); LY_CHECK_RET(ly_set_add(&ctx->main_ctx->tpdfs_nodes, parent, 0, NULL)); } cleanup: return ret; } /** * @brief Parse the input or output statement. * * @param[in] ctx yang parser context for logging. * @param[in] kw Type of this particular keyword * @param[in,out] inout_p Input/output pointer to write to. * @return LY_ERR values. */ static LY_ERR parse_inout(struct lysp_yang_ctx *ctx, enum ly_stmt inout_kw, struct lysp_node *parent, struct lysp_node_action_inout *inout_p) { LY_ERR ret = LY_SUCCESS; char *word; size_t word_len; enum ly_stmt kw; ly_bool input = &((struct lysp_node_action *)parent)->input == inout_p ? 1 : 0; if (inout_p->nodetype) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(inout_kw)); return LY_EVALID; } /* initiate structure */ LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), input ? "input" : "output", 0, &inout_p->name)); inout_p->nodetype = input ? LYS_INPUT : LYS_OUTPUT; inout_p->parent = parent; /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", lyplg_ext_stmt2str(inout_kw)); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)inout_p, &inout_p->child)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)inout_p, &inout_p->typedefs)); break; case LY_STMT_MUST: PARSER_CHECK_STMTVER2_RET(ctx, "must", lyplg_ext_stmt2str(inout_kw)); LY_CHECK_RET(parse_restrs(ctx, kw, &inout_p->musts)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)inout_p, &inout_p->groupings)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, inout_p, inout_kw, 0, &inout_p->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(inout_kw)); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, inout_p->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the action statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] actions Actions to add to. * @return LY_ERR values. */ LY_ERR parse_action(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_action **actions) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_action *act; LY_LIST_NEW_RET(PARSER_CTX(ctx), actions, act, next, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, act->name, word, word_len, ret, cleanup); act->nodetype = parent ? LYS_ACTION : LYS_RPC; act->parent = parent; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, act->dsc, LY_STMT_DESCRIPTION, 0, &act->dsc, Y_STR_ARG, NULL, &act->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &act->iffeatures, Y_STR_ARG, &act->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, act->ref, LY_STMT_REFERENCE, 0, &act->ref, Y_STR_ARG, NULL, &act->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &act->flags, &act->exts)); break; case LY_STMT_INPUT: LY_CHECK_RET(parse_inout(ctx, kw, (struct lysp_node *)act, &act->input)); break; case LY_STMT_OUTPUT: LY_CHECK_RET(parse_inout(ctx, kw, (struct lysp_node *)act, &act->output)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)act, &act->typedefs)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)act, &act->groupings)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, act, parent ? LY_STMT_ACTION : LY_STMT_RPC, 0, &act->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), parent ? "action" : "rpc"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, act->exts, ret, cleanup); } /* always initialize inout, they are technically present (needed for later deviations/refines) */ if (!act->input.nodetype) { act->input.nodetype = LYS_INPUT; act->input.parent = (struct lysp_node *)act; LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), "input", 0, &act->input.name)); } if (!act->output.nodetype) { act->output.nodetype = LYS_OUTPUT; act->output.parent = (struct lysp_node *)act; LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), "output", 0, &act->output.name)); } cleanup: return ret; } /** * @brief Parse the notification statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] notifs Notifications to add to. * @return LY_ERR values. */ LY_ERR parse_notif(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_notif **notifs) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_notif *notif; LY_LIST_NEW_RET(PARSER_CTX(ctx), notifs, notif, next, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, notif->name, word, word_len, ret, cleanup); notif->nodetype = LYS_NOTIF; notif->parent = parent; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, notif->dsc, LY_STMT_DESCRIPTION, 0, ¬if->dsc, Y_STR_ARG, NULL, ¬if->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, ¬if->iffeatures, Y_STR_ARG, ¬if->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, notif->ref, LY_STMT_REFERENCE, 0, ¬if->ref, Y_STR_ARG, NULL, ¬if->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, ¬if->flags, ¬if->exts)); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "notification"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)notif, ¬if->child)); break; case LY_STMT_MUST: PARSER_CHECK_STMTVER2_RET(ctx, "must", "notification"); LY_CHECK_RET(parse_restrs(ctx, kw, ¬if->musts)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)notif, ¬if->typedefs)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)notif, ¬if->groupings)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, notif, LY_STMT_NOTIFICATION, 0, ¬if->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "notification"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, notif->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the grouping statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] groupings Groupings to add to. * @return LY_ERR values. */ LY_ERR parse_grouping(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_grp **groupings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_grp *grp; LY_LIST_NEW_RET(PARSER_CTX(ctx), groupings, grp, next, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, grp->name, word, word_len, ret, cleanup); grp->nodetype = LYS_GROUPING; grp->parent = parent; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, grp->dsc, LY_STMT_DESCRIPTION, 0, &grp->dsc, Y_STR_ARG, NULL, &grp->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, grp->ref, LY_STMT_REFERENCE, 0, &grp->ref, Y_STR_ARG, NULL, &grp->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &grp->flags, &grp->exts)); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "grouping"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, &grp->node, &grp->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, &grp->node, &grp->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, &grp->node, &grp->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, &grp->node, &grp->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, &grp->node, &grp->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, &grp->node, &grp->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, &grp->node, &grp->child)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, &grp->node, &grp->typedefs)); break; case LY_STMT_ACTION: PARSER_CHECK_STMTVER2_RET(ctx, "action", "grouping"); LY_CHECK_RET(parse_action(ctx, &grp->node, &grp->actions)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, &grp->node, &grp->groupings)); break; case LY_STMT_NOTIFICATION: PARSER_CHECK_STMTVER2_RET(ctx, "notification", "grouping"); LY_CHECK_RET(parse_notif(ctx, &grp->node, &grp->notifs)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, grp, LY_STMT_GROUPING, 0, &grp->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "grouping"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, grp->exts, ret, cleanup); } /* store data for collision check */ if (parent) { assert(ctx->main_ctx); LY_CHECK_RET(ly_set_add(&ctx->main_ctx->grps_nodes, parent, 0, NULL)); } cleanup: return ret; } /** * @brief Parse the augment statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] augments Augments to add to. * @return LY_ERR values. */ LY_ERR parse_augment(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_augment **augments) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_augment *aug; LY_LIST_NEW_RET(PARSER_CTX(ctx), augments, aug, next, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); CHECK_NONEMPTY(ctx, word_len, "augment"); INSERT_WORD_GOTO(ctx, buf, aug->nodeid, word, word_len, ret, cleanup); aug->nodetype = LYS_AUGMENT; aug->parent = parent; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, aug->dsc, LY_STMT_DESCRIPTION, 0, &aug->dsc, Y_STR_ARG, NULL, &aug->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &aug->iffeatures, Y_STR_ARG, &aug->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, aug->ref, LY_STMT_REFERENCE, 0, &aug->ref, Y_STR_ARG, NULL, &aug->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &aug->flags, &aug->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &aug->when)); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "augment"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_CASE: LY_CHECK_RET(parse_case(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)aug, &aug->child)); break; case LY_STMT_ACTION: PARSER_CHECK_STMTVER2_RET(ctx, "action", "augment"); LY_CHECK_RET(parse_action(ctx, (struct lysp_node *)aug, &aug->actions)); break; case LY_STMT_NOTIFICATION: PARSER_CHECK_STMTVER2_RET(ctx, "notification", "augment"); LY_CHECK_RET(parse_notif(ctx, (struct lysp_node *)aug, &aug->notifs)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, aug, LY_STMT_AUGMENT, 0, &aug->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "augment"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, aug->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the uses statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_uses(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_uses *uses; /* create uses structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, uses, next, LY_EMEM); uses->nodetype = LYS_USES; uses->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_PREF_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, uses->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, uses->dsc, LY_STMT_DESCRIPTION, 0, &uses->dsc, Y_STR_ARG, NULL, &uses->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &uses->iffeatures, Y_STR_ARG, &uses->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, uses->ref, LY_STMT_REFERENCE, 0, &uses->ref, Y_STR_ARG, NULL, &uses->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &uses->flags, &uses->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &uses->when)); break; case LY_STMT_REFINE: LY_CHECK_RET(parse_refine(ctx, &uses->refines)); break; case LY_STMT_AUGMENT: LY_CHECK_RET(parse_augment(ctx, (struct lysp_node *)uses, &uses->augments)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, uses, LY_STMT_USES, 0, &uses->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "uses"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, uses->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the case statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_case(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_case *cas; /* create new case structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, cas, next, LY_EMEM); cas->nodetype = LYS_CASE; cas->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, cas->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, cas->dsc, LY_STMT_DESCRIPTION, 0, &cas->dsc, Y_STR_ARG, NULL, &cas->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &cas->iffeatures, Y_STR_ARG, &cas->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, cas->ref, LY_STMT_REFERENCE, 0, &cas->ref, Y_STR_ARG, NULL, &cas->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &cas->flags, &cas->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &cas->when)); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "case"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)cas, &cas->child)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, cas, LY_STMT_CASE, 0, &cas->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "case"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, cas->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the choice statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_choice(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_choice *choice; /* create new choice structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, choice, next, LY_EMEM); choice->nodetype = LYS_CHOICE; choice->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, choice->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &choice->flags, &choice->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, choice->dsc, LY_STMT_DESCRIPTION, 0, &choice->dsc, Y_STR_ARG, NULL, &choice->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &choice->iffeatures, Y_STR_ARG, &choice->exts)); break; case LY_STMT_MANDATORY: LY_CHECK_RET(parse_mandatory(ctx, &choice->flags, &choice->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, choice->ref, LY_STMT_REFERENCE, 0, &choice->ref, Y_STR_ARG, NULL, &choice->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &choice->flags, &choice->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &choice->when)); break; case LY_STMT_DEFAULT: LY_CHECK_RET(parse_text_field(ctx, &choice->dflt, LY_STMT_DEFAULT, 0, &choice->dflt.str, Y_PREF_IDENTIF_ARG, &choice->dflt.flags, &choice->exts)); choice->dflt.mod = PARSER_CUR_PMOD(ctx); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "choice"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_CASE: LY_CHECK_RET(parse_case(ctx, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_CHOICE: PARSER_CHECK_STMTVER2_RET(ctx, "choice", "choice"); LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)choice, &choice->child)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, choice, LY_STMT_CHOICE, 0, &choice->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "choice"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, choice->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the container statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_container(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = 0; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_container *cont; /* create new container structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, cont, next, LY_EMEM); cont->nodetype = LYS_CONTAINER; cont->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, cont->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &cont->flags, &cont->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, cont->dsc, LY_STMT_DESCRIPTION, 0, &cont->dsc, Y_STR_ARG, NULL, &cont->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &cont->iffeatures, Y_STR_ARG, &cont->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, cont->ref, LY_STMT_REFERENCE, 0, &cont->ref, Y_STR_ARG, NULL, &cont->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &cont->flags, &cont->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &cont->when)); break; case LY_STMT_PRESENCE: LY_CHECK_RET(parse_text_field(ctx, cont->presence, LY_STMT_PRESENCE, 0, &cont->presence, Y_STR_ARG, NULL, &cont->exts)); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "container"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)cont, &cont->child)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)cont, &cont->typedefs)); break; case LY_STMT_MUST: LY_CHECK_RET(parse_restrs(ctx, kw, &cont->musts)); break; case LY_STMT_ACTION: PARSER_CHECK_STMTVER2_RET(ctx, "action", "container"); LY_CHECK_RET(parse_action(ctx, (struct lysp_node *)cont, &cont->actions)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)cont, &cont->groupings)); break; case LY_STMT_NOTIFICATION: PARSER_CHECK_STMTVER2_RET(ctx, "notification", "container"); LY_CHECK_RET(parse_notif(ctx, (struct lysp_node *)cont, &cont->notifs)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, cont, LY_STMT_CONTAINER, 0, &cont->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "container"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, cont->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the list statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] siblings Siblings to add to. * @return LY_ERR values. */ LY_ERR parse_list(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_node_list *list; /* create new list structure */ LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, list, next, LY_EMEM); list->nodetype = LYS_LIST; list->parent = parent; /* get name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, list->name, word, word_len, ret, cleanup); /* parse substatements */ YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: LY_CHECK_RET(parse_config(ctx, &list->flags, &list->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, list->dsc, LY_STMT_DESCRIPTION, 0, &list->dsc, Y_STR_ARG, NULL, &list->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &list->iffeatures, Y_STR_ARG, &list->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, list->ref, LY_STMT_REFERENCE, 0, &list->ref, Y_STR_ARG, NULL, &list->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &list->flags, &list->exts)); break; case LY_STMT_WHEN: LY_CHECK_RET(parse_when(ctx, &list->when)); break; case LY_STMT_KEY: LY_CHECK_RET(parse_text_field(ctx, list, LY_STMT_KEY, 0, &list->key, Y_STR_ARG, NULL, &list->exts)); break; case LY_STMT_MAX_ELEMENTS: LY_CHECK_RET(parse_maxelements(ctx, &list->max, &list->flags, &list->exts)); break; case LY_STMT_MIN_ELEMENTS: LY_CHECK_RET(parse_minelements(ctx, &list->min, &list->flags, &list->exts)); break; case LY_STMT_ORDERED_BY: LY_CHECK_RET(parse_orderedby(ctx, &list->node)); break; case LY_STMT_UNIQUE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_UNIQUE, &list->uniques, Y_STR_ARG, &list->exts)); break; case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "list"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)list, &list->child)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)list, &list->child)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)list, &list->child)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)list, &list->child)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)list, &list->child)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)list, &list->child)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)list, &list->child)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)list, &list->typedefs)); break; case LY_STMT_MUST: LY_CHECK_RET(parse_restrs(ctx, kw, &list->musts)); break; case LY_STMT_ACTION: PARSER_CHECK_STMTVER2_RET(ctx, "action", "list"); LY_CHECK_RET(parse_action(ctx, (struct lysp_node *)list, &list->actions)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)list, &list->groupings)); break; case LY_STMT_NOTIFICATION: PARSER_CHECK_STMTVER2_RET(ctx, "notification", "list"); LY_CHECK_RET(parse_notif(ctx, (struct lysp_node *)list, &list->notifs)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, list, LY_STMT_LIST, 0, &list->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "list"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, list->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the yin-element statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] ext Extension to fill. * @return LY_ERR values. */ static LY_ERR parse_yinelement(struct lysp_yang_ctx *ctx, struct lysp_ext *ext) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (ext->flags & LYS_YINELEM_MASK) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "yin-element"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len)); if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) { ext->flags |= LYS_YINELEM_TRUE; } else if ((word_len == ly_strlen_const("false")) && !strncmp(word, "false", word_len)) { ext->flags |= LYS_YINELEM_FALSE; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "yin-element"); free(buf); return LY_EVALID; } free(buf); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, ext, LY_STMT_YIN_ELEMENT, 0, &ext->exts)); LY_CHECK_RET(ret); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "yin-element"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the argument statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] ext Extension to fill. * @return LY_ERR values. */ static LY_ERR parse_argument(struct lysp_yang_ctx *ctx, struct lysp_ext *ext) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; if (ext->argname) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "argument"); return LY_EVALID; } /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, ext->argname, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_YIN_ELEMENT: LY_CHECK_RET(parse_yinelement(ctx, ext)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, ext, LY_STMT_ARGUMENT, 0, &ext->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "argument"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, NULL, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the extension statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] extensions Extensions to add to. * @return LY_ERR values. */ static LY_ERR parse_extension(struct lysp_yang_ctx *ctx, struct lysp_ext **extensions) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_ext *ex; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *extensions, ex, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, ex->name, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, ex->dsc, LY_STMT_DESCRIPTION, 0, &ex->dsc, Y_STR_ARG, NULL, &ex->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, ex->ref, LY_STMT_REFERENCE, 0, &ex->ref, Y_STR_ARG, NULL, &ex->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &ex->flags, &ex->exts)); break; case LY_STMT_ARGUMENT: LY_CHECK_RET(parse_argument(ctx, ex)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, ex, LY_STMT_EXTENSION, 0, &ex->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "extension"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, ex->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the deviate statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] deviates Deviates to add to. * @return LY_ERR values. */ LY_ERR parse_deviate(struct lysp_yang_ctx *ctx, struct lysp_deviate **deviates) { LY_ERR ret = LY_SUCCESS; char *buf = NULL, *word; size_t word_len, dev_mod; enum ly_stmt kw; struct lysf_ctx fctx = {.ctx = PARSER_CTX(ctx)}; struct lysp_deviate *d = NULL; struct lysp_deviate_add *d_add = NULL; struct lysp_deviate_rpl *d_rpl = NULL; struct lysp_deviate_del *d_del = NULL; const char **d_units = NULL; struct lysp_qname **d_uniques = NULL, **d_dflts = NULL; struct lysp_restr **d_musts = NULL; uint16_t *d_flags = 0; uint32_t *d_min = 0, *d_max = 0; /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); if ((word_len == ly_strlen_const("not-supported")) && !strncmp(word, "not-supported", word_len)) { dev_mod = LYS_DEV_NOT_SUPPORTED; } else if ((word_len == ly_strlen_const("add")) && !strncmp(word, "add", word_len)) { dev_mod = LYS_DEV_ADD; } else if ((word_len == ly_strlen_const("replace")) && !strncmp(word, "replace", word_len)) { dev_mod = LYS_DEV_REPLACE; } else if ((word_len == ly_strlen_const("delete")) && !strncmp(word, "delete", word_len)) { dev_mod = LYS_DEV_DELETE; } else { LOGVAL_PARSER(ctx, LY_VCODE_INVAL, (int)word_len, word, "deviate"); ret = LY_EVALID; goto cleanup; } /* create structure */ switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: d = calloc(1, sizeof *d); LY_CHECK_ERR_GOTO(!d, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); break; case LYS_DEV_ADD: d_add = calloc(1, sizeof *d_add); LY_CHECK_ERR_GOTO(!d_add, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); d = (struct lysp_deviate *)d_add; d_units = &d_add->units; d_uniques = &d_add->uniques; d_dflts = &d_add->dflts; d_musts = &d_add->musts; d_flags = &d_add->flags; d_min = &d_add->min; d_max = &d_add->max; break; case LYS_DEV_REPLACE: d_rpl = calloc(1, sizeof *d_rpl); LY_CHECK_ERR_GOTO(!d_rpl, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); d = (struct lysp_deviate *)d_rpl; d_units = &d_rpl->units; d_flags = &d_rpl->flags; d_min = &d_rpl->min; d_max = &d_rpl->max; break; case LYS_DEV_DELETE: d_del = calloc(1, sizeof *d_del); LY_CHECK_ERR_GOTO(!d_del, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); d = (struct lysp_deviate *)d_del; d_units = &d_del->units; d_uniques = &d_del->uniques; d_dflts = &d_del->dflts; d_musts = &d_del->musts; break; default: assert(0); LOGINT(PARSER_CTX(ctx)); ret = LY_EINT; goto cleanup; } d->mod = dev_mod; YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_CONFIG: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_DELETE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: LY_CHECK_GOTO(ret = parse_config(ctx, d_flags, &d->exts), cleanup); break; } break; case LY_STMT_DEFAULT: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; case LYS_DEV_REPLACE: ret = parse_text_field(ctx, &d_rpl->dflt, LY_STMT_DEFAULT, 0, &d_rpl->dflt.str, Y_STR_ARG, &d_rpl->dflt.flags, &d->exts); LY_CHECK_GOTO(ret, cleanup); d_rpl->dflt.mod = PARSER_CUR_PMOD(ctx); break; default: LY_CHECK_GOTO(ret = parse_qnames(ctx, LY_STMT_DEFAULT, d_dflts, Y_STR_ARG, &d->exts), cleanup); break; } break; case LY_STMT_MANDATORY: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_DELETE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: LY_CHECK_GOTO(ret = parse_mandatory(ctx, d_flags, &d->exts), cleanup); break; } break; case LY_STMT_MAX_ELEMENTS: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_DELETE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: LY_CHECK_GOTO(ret = parse_maxelements(ctx, d_max, d_flags, &d->exts), cleanup); break; } break; case LY_STMT_MIN_ELEMENTS: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_DELETE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: LY_CHECK_GOTO(ret = parse_minelements(ctx, d_min, d_flags, &d->exts), cleanup); break; } break; case LY_STMT_MUST: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_REPLACE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: LY_CHECK_GOTO(ret = parse_restrs(ctx, kw, d_musts), cleanup); break; } break; case LY_STMT_TYPE: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_ADD: case LYS_DEV_DELETE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: if (d_rpl->type) { LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; } d_rpl->type = calloc(1, sizeof *d_rpl->type); LY_CHECK_ERR_GOTO(!d_rpl->type, LOGMEM(PARSER_CTX(ctx)); ret = LY_EMEM, cleanup); LY_CHECK_GOTO(ret = parse_type(ctx, d_rpl->type), cleanup); break; } break; case LY_STMT_UNIQUE: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: case LYS_DEV_REPLACE: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: LY_CHECK_GOTO(ret = parse_qnames(ctx, LY_STMT_UNIQUE, d_uniques, Y_STR_ARG, &d->exts), cleanup); break; } break; case LY_STMT_UNITS: switch (dev_mod) { case LYS_DEV_NOT_SUPPORTED: LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; default: ret = parse_text_field(ctx, *d_units, LY_STMT_UNITS, 0, d_units, Y_STR_ARG, NULL, &d->exts); LY_CHECK_GOTO(ret, cleanup); break; } break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, d, LY_STMT_DEVIATE, 0, &d->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "deviate"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, d->exts, ret, cleanup); } cleanup: free(buf); if (ret) { lysp_deviate_free(&fctx, d); free(d); } else { /* insert into siblings */ LY_LIST_INSERT(deviates, d, next); } return ret; } /** * @brief Parse the deviation statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] deviations Deviations to add to. * @return LY_ERR values. */ LY_ERR parse_deviation(struct lysp_yang_ctx *ctx, struct lysp_deviation **deviations) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_deviation *dev; struct lysf_ctx fctx = {.ctx = PARSER_CTX(ctx)}; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *deviations, dev, LY_EMEM); /* get value */ LY_CHECK_GOTO(ret = get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len), cleanup); CHECK_NONEMPTY(ctx, word_len, "deviation"); INSERT_WORD_GOTO(ctx, buf, dev->nodeid, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: ret = parse_text_field(ctx, dev->dsc, LY_STMT_DESCRIPTION, 0, &dev->dsc, Y_STR_ARG, NULL, &dev->exts); LY_CHECK_GOTO(ret, cleanup); break; case LY_STMT_DEVIATE: LY_CHECK_GOTO(ret = parse_deviate(ctx, &dev->deviates), cleanup); break; case LY_STMT_REFERENCE: ret = parse_text_field(ctx, dev->ref, LY_STMT_REFERENCE, 0, &dev->ref, Y_STR_ARG, NULL, &dev->exts); LY_CHECK_GOTO(ret, cleanup); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_GOTO(ret = parse_ext(ctx, word, word_len, dev, LY_STMT_DEVIATION, 0, &dev->exts), cleanup); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "deviation"); ret = LY_EVALID; goto cleanup; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, dev->exts, ret, cleanup); } /* mandatory substatements */ if (!dev->deviates) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "deviate", "deviation"); ret = LY_EVALID; goto cleanup; } cleanup: if (ret) { lysp_deviation_free(&fctx, dev); LY_ARRAY_DECREMENT_FREE(*deviations); } return ret; } /** * @brief Parse the feature statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] features Features to add to. * @return LY_ERR values. */ LY_ERR parse_feature(struct lysp_yang_ctx *ctx, struct lysp_feature **features) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_feature *feat; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *features, feat, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, feat->name, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, feat->dsc, LY_STMT_DESCRIPTION, 0, &feat->dsc, Y_STR_ARG, NULL, &feat->exts)); break; case LY_STMT_IF_FEATURE: LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &feat->iffeatures, Y_STR_ARG, &feat->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, feat->ref, LY_STMT_REFERENCE, 0, &feat->ref, Y_STR_ARG, NULL, &feat->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &feat->flags, &feat->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, feat, LY_STMT_FEATURE, 0, &feat->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "feature"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, feat->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse the identity statement. * * @param[in] ctx yang parser context for logging. * @param[in,out] identities Identities to add to. * @return LY_ERR values. */ LY_ERR parse_identity(struct lysp_yang_ctx *ctx, struct lysp_ident **identities) { LY_ERR ret = LY_SUCCESS; char *buf, *word; size_t word_len; enum ly_stmt kw; struct lysp_ident *ident; LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *identities, ident, LY_EMEM); /* get value */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, ident->name, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { switch (kw) { case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, ident->dsc, LY_STMT_DESCRIPTION, 0, &ident->dsc, Y_STR_ARG, NULL, &ident->exts)); break; case LY_STMT_IF_FEATURE: PARSER_CHECK_STMTVER2_RET(ctx, "if-feature", "identity"); LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &ident->iffeatures, Y_STR_ARG, &ident->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, ident->ref, LY_STMT_REFERENCE, 0, &ident->ref, Y_STR_ARG, NULL, &ident->exts)); break; case LY_STMT_STATUS: LY_CHECK_RET(parse_status(ctx, &ident->flags, &ident->exts)); break; case LY_STMT_BASE: if (ident->bases && (PARSER_CUR_PMOD(ctx)->version < LYS_VERSION_1_1)) { LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Identity can be derived from multiple base identities only in YANG 1.1 modules"); return LY_EVALID; } LY_CHECK_RET(parse_text_fields(ctx, LY_STMT_BASE, &ident->bases, Y_PREF_IDENTIF_ARG, &ident->exts)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, ident, LY_STMT_IDENTITY, 0, &ident->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "identity"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, ident->exts, ret, cleanup); } cleanup: return ret; } /** * @brief Parse module substatements. * * @param[in] ctx yang parser context for logging. * @param[in,out] mod Module to write to. * @return LY_ERR values. */ LY_ERR parse_module(struct lysp_yang_ctx *ctx, struct lysp_module *mod) { LY_ERR ret = 0; char *buf, *word; size_t word_len; enum ly_stmt kw, prev_kw = 0; enum yang_module_stmt mod_stmt = Y_MOD_MODULE_HEADER; const struct lysp_submodule *dup; mod->is_submod = 0; /* module name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, mod->mod->name, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { #define CHECK_ORDER(SECTION) \ if (mod_stmt > SECTION) {\ LOGVAL_PARSER(ctx, LY_VCODE_INORD, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(prev_kw)); return LY_EVALID;\ } mod_stmt = SECTION switch (kw) { /* module header */ case LY_STMT_NAMESPACE: case LY_STMT_PREFIX: CHECK_ORDER(Y_MOD_MODULE_HEADER); break; case LY_STMT_YANG_VERSION: CHECK_ORDER(Y_MOD_MODULE_HEADER); break; /* linkage */ case LY_STMT_INCLUDE: case LY_STMT_IMPORT: CHECK_ORDER(Y_MOD_LINKAGE); break; /* meta */ case LY_STMT_ORGANIZATION: case LY_STMT_CONTACT: case LY_STMT_DESCRIPTION: case LY_STMT_REFERENCE: CHECK_ORDER(Y_MOD_META); break; /* revision */ case LY_STMT_REVISION: CHECK_ORDER(Y_MOD_REVISION); break; /* body */ case LY_STMT_ANYDATA: case LY_STMT_ANYXML: case LY_STMT_AUGMENT: case LY_STMT_CHOICE: case LY_STMT_CONTAINER: case LY_STMT_DEVIATION: case LY_STMT_EXTENSION: case LY_STMT_FEATURE: case LY_STMT_GROUPING: case LY_STMT_IDENTITY: case LY_STMT_LEAF: case LY_STMT_LEAF_LIST: case LY_STMT_LIST: case LY_STMT_NOTIFICATION: case LY_STMT_RPC: case LY_STMT_TYPEDEF: case LY_STMT_USES: mod_stmt = Y_MOD_BODY; break; case LY_STMT_EXTENSION_INSTANCE: /* no place in the statement order defined */ break; default: /* error handled in the next switch */ break; } #undef CHECK_ORDER prev_kw = kw; switch (kw) { /* module header */ case LY_STMT_YANG_VERSION: LY_CHECK_RET(parse_yangversion(ctx, mod)); break; case LY_STMT_NAMESPACE: LY_CHECK_RET(parse_text_field(ctx, mod, LY_STMT_NAMESPACE, 0, &mod->mod->ns, Y_STR_ARG, NULL, &mod->exts)); break; case LY_STMT_PREFIX: LY_CHECK_RET(parse_text_field(ctx, mod->mod->prefix, LY_STMT_PREFIX, 0, &mod->mod->prefix, Y_IDENTIF_ARG, NULL, &mod->exts)); break; /* linkage */ case LY_STMT_INCLUDE: LY_CHECK_RET(parse_include(ctx, mod->mod->name, &mod->includes)); break; case LY_STMT_IMPORT: LY_CHECK_RET(parse_import(ctx, mod->mod->prefix, &mod->imports)); break; /* meta */ case LY_STMT_ORGANIZATION: LY_CHECK_RET(parse_text_field(ctx, mod, LY_STMT_ORGANIZATION, 0, &mod->mod->org, Y_STR_ARG, NULL, &mod->exts)); break; case LY_STMT_CONTACT: LY_CHECK_RET(parse_text_field(ctx, mod, LY_STMT_CONTACT, 0, &mod->mod->contact, Y_STR_ARG, NULL, &mod->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, mod->mod->dsc, LY_STMT_DESCRIPTION, 0, &mod->mod->dsc, Y_STR_ARG, NULL, &mod->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, mod->mod->ref, LY_STMT_REFERENCE, 0, &mod->mod->ref, Y_STR_ARG, NULL, &mod->exts)); break; /* revision */ case LY_STMT_REVISION: LY_CHECK_RET(parse_revision(ctx, &mod->revs)); break; /* body */ case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "module"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, NULL, &mod->data)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, NULL, &mod->data)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, NULL, &mod->data)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, NULL, &mod->data)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, NULL, &mod->data)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, NULL, &mod->data)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, NULL, &mod->data)); break; case LY_STMT_AUGMENT: LY_CHECK_RET(parse_augment(ctx, NULL, &mod->augments)); break; case LY_STMT_DEVIATION: LY_CHECK_RET(parse_deviation(ctx, &mod->deviations)); break; case LY_STMT_EXTENSION: LY_CHECK_RET(parse_extension(ctx, &mod->extensions)); break; case LY_STMT_FEATURE: LY_CHECK_RET(parse_feature(ctx, &mod->features)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, NULL, &mod->groupings)); break; case LY_STMT_IDENTITY: LY_CHECK_RET(parse_identity(ctx, &mod->identities)); break; case LY_STMT_NOTIFICATION: LY_CHECK_RET(parse_notif(ctx, NULL, &mod->notifs)); break; case LY_STMT_RPC: LY_CHECK_RET(parse_action(ctx, NULL, &mod->rpcs)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, NULL, &mod->typedefs)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, mod, LY_STMT_MODULE, 0, &mod->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "module"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, mod->exts, ret, cleanup); } /* mandatory substatements */ if (!mod->mod->ns) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "namespace", "module"); return LY_EVALID; } else if (!mod->mod->prefix) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "prefix", "module"); return LY_EVALID; } /* submodules share the namespace with the module names, so there must not be * a submodule of the same name in the context, no need for revision matching */ dup = ly_ctx_get_submodule_latest(PARSER_CTX(ctx), mod->mod->name); if (dup) { LOGVAL_PARSER(ctx, LY_VCODE_NAME2_COL, "module", "submodule", mod->mod->name); return LY_EVALID; } cleanup: return ret; } /** * @brief Parse submodule substatements. * * @param[in] ctx yang parser context for logging. * @param[out] submod Parsed submodule structure. * * @return LY_ERR values. */ LY_ERR parse_submodule(struct lysp_yang_ctx *ctx, struct lysp_submodule *submod) { LY_ERR ret = 0; char *buf, *word; size_t word_len; enum ly_stmt kw, prev_kw = 0; enum yang_module_stmt mod_stmt = Y_MOD_MODULE_HEADER; const struct lysp_submodule *dup; submod->is_submod = 1; /* submodule name */ LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len)); INSERT_WORD_GOTO(ctx, buf, submod->name, word, word_len, ret, cleanup); YANG_READ_SUBSTMT_FOR_GOTO(ctx, kw, word, word_len, ret, cleanup) { #define CHECK_ORDER(SECTION) \ if (mod_stmt > SECTION) {LOGVAL_PARSER(ctx, LY_VCODE_INORD, lyplg_ext_stmt2str(kw), lyplg_ext_stmt2str(prev_kw)); return LY_EVALID;}mod_stmt = SECTION switch (kw) { /* module header */ case LY_STMT_BELONGS_TO: CHECK_ORDER(Y_MOD_MODULE_HEADER); break; case LY_STMT_YANG_VERSION: CHECK_ORDER(Y_MOD_MODULE_HEADER); break; /* linkage */ case LY_STMT_INCLUDE: case LY_STMT_IMPORT: CHECK_ORDER(Y_MOD_LINKAGE); break; /* meta */ case LY_STMT_ORGANIZATION: case LY_STMT_CONTACT: case LY_STMT_DESCRIPTION: case LY_STMT_REFERENCE: CHECK_ORDER(Y_MOD_META); break; /* revision */ case LY_STMT_REVISION: CHECK_ORDER(Y_MOD_REVISION); break; /* body */ case LY_STMT_ANYDATA: case LY_STMT_ANYXML: case LY_STMT_AUGMENT: case LY_STMT_CHOICE: case LY_STMT_CONTAINER: case LY_STMT_DEVIATION: case LY_STMT_EXTENSION: case LY_STMT_FEATURE: case LY_STMT_GROUPING: case LY_STMT_IDENTITY: case LY_STMT_LEAF: case LY_STMT_LEAF_LIST: case LY_STMT_LIST: case LY_STMT_NOTIFICATION: case LY_STMT_RPC: case LY_STMT_TYPEDEF: case LY_STMT_USES: mod_stmt = Y_MOD_BODY; break; case LY_STMT_EXTENSION_INSTANCE: /* no place in the statement order defined */ break; default: /* error handled in the next switch */ break; } #undef CHECK_ORDER prev_kw = kw; switch (kw) { /* module header */ case LY_STMT_YANG_VERSION: LY_CHECK_RET(parse_yangversion(ctx, (struct lysp_module *)submod)); break; case LY_STMT_BELONGS_TO: LY_CHECK_RET(parse_belongsto(ctx, submod)); break; /* linkage */ case LY_STMT_INCLUDE: if (submod->version == LYS_VERSION_1_1) { LOGWRN(PARSER_CTX(ctx), "YANG version 1.1 expects all includes in main module, includes in submodules (%s) are not necessary.", submod->name); } LY_CHECK_RET(parse_include(ctx, submod->name, &submod->includes)); break; case LY_STMT_IMPORT: LY_CHECK_RET(parse_import(ctx, submod->prefix, &submod->imports)); break; /* meta */ case LY_STMT_ORGANIZATION: LY_CHECK_RET(parse_text_field(ctx, submod, LY_STMT_ORGANIZATION, 0, &submod->org, Y_STR_ARG, NULL, &submod->exts)); break; case LY_STMT_CONTACT: LY_CHECK_RET(parse_text_field(ctx, submod, LY_STMT_CONTACT, 0, &submod->contact, Y_STR_ARG, NULL, &submod->exts)); break; case LY_STMT_DESCRIPTION: LY_CHECK_RET(parse_text_field(ctx, submod->dsc, LY_STMT_DESCRIPTION, 0, &submod->dsc, Y_STR_ARG, NULL, &submod->exts)); break; case LY_STMT_REFERENCE: LY_CHECK_RET(parse_text_field(ctx, submod->ref, LY_STMT_REFERENCE, 0, &submod->ref, Y_STR_ARG, NULL, &submod->exts)); break; /* revision */ case LY_STMT_REVISION: LY_CHECK_RET(parse_revision(ctx, &submod->revs)); break; /* body */ case LY_STMT_ANYDATA: PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "submodule"); /* fall through */ case LY_STMT_ANYXML: LY_CHECK_RET(parse_any(ctx, kw, NULL, &submod->data)); break; case LY_STMT_CHOICE: LY_CHECK_RET(parse_choice(ctx, NULL, &submod->data)); break; case LY_STMT_CONTAINER: LY_CHECK_RET(parse_container(ctx, NULL, &submod->data)); break; case LY_STMT_LEAF: LY_CHECK_RET(parse_leaf(ctx, NULL, &submod->data)); break; case LY_STMT_LEAF_LIST: LY_CHECK_RET(parse_leaflist(ctx, NULL, &submod->data)); break; case LY_STMT_LIST: LY_CHECK_RET(parse_list(ctx, NULL, &submod->data)); break; case LY_STMT_USES: LY_CHECK_RET(parse_uses(ctx, NULL, &submod->data)); break; case LY_STMT_AUGMENT: LY_CHECK_RET(parse_augment(ctx, NULL, &submod->augments)); break; case LY_STMT_DEVIATION: LY_CHECK_RET(parse_deviation(ctx, &submod->deviations)); break; case LY_STMT_EXTENSION: LY_CHECK_RET(parse_extension(ctx, &submod->extensions)); break; case LY_STMT_FEATURE: LY_CHECK_RET(parse_feature(ctx, &submod->features)); break; case LY_STMT_GROUPING: LY_CHECK_RET(parse_grouping(ctx, NULL, &submod->groupings)); break; case LY_STMT_IDENTITY: LY_CHECK_RET(parse_identity(ctx, &submod->identities)); break; case LY_STMT_NOTIFICATION: LY_CHECK_RET(parse_notif(ctx, NULL, &submod->notifs)); break; case LY_STMT_RPC: LY_CHECK_RET(parse_action(ctx, NULL, &submod->rpcs)); break; case LY_STMT_TYPEDEF: LY_CHECK_RET(parse_typedef(ctx, NULL, &submod->typedefs)); break; case LY_STMT_EXTENSION_INSTANCE: LY_CHECK_RET(parse_ext(ctx, word, word_len, submod, LY_STMT_SUBMODULE, 0, &submod->exts)); break; default: LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, lyplg_ext_stmt2str(kw), "submodule"); return LY_EVALID; } YANG_READ_SUBSTMT_NEXT_ITER(ctx, kw, word, word_len, submod->exts, ret, cleanup); } /* mandatory substatements */ if (!submod->prefix) { LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "belongs-to", "submodule"); return LY_EVALID; } /* submodules share the namespace with the module names, so there must not be * a submodule of the same name in the context, no need for revision matching */ dup = ly_ctx_get_submodule_latest(PARSER_CTX(ctx), submod->name); /* main modules may have different revisions */ if (dup && strcmp(dup->mod->name, submod->mod->name)) { LOGVAL_PARSER(ctx, LY_VCODE_NAME_COL, "submodules", dup->name); return LY_EVALID; } cleanup: return ret; } /** * @brief Skip any redundant characters, namely whitespaces and comments. * * @param[in] ctx Yang parser context. * @return LY_SUCCESS on success. * @return LY_EVALID on invalid comment. */ static LY_ERR skip_redundant_chars(struct lysp_yang_ctx *ctx) { /* read some trailing spaces, new lines, or comments */ while (ctx->in->current[0]) { if (!strncmp(ctx->in->current, "//", 2)) { /* one-line comment */ ly_in_skip(ctx->in, 2); LY_CHECK_RET(skip_comment(ctx, 1)); } else if (!strncmp(ctx->in->current, "/*", 2)) { /* block comment */ ly_in_skip(ctx->in, 2); LY_CHECK_RET(skip_comment(ctx, 2)); } else if (isspace(ctx->in->current[0])) { /* whitespace */ if (ctx->in->current[0] == '\n') { LY_IN_NEW_LINE(ctx->in); } ly_in_skip(ctx->in, 1); } else { break; } } return LY_SUCCESS; } LY_ERR yang_parse_submodule(struct lysp_yang_ctx **context, struct ly_ctx *ly_ctx, struct lysp_ctx *main_ctx, struct ly_in *in, struct lysp_submodule **submod) { LY_ERR ret = LY_SUCCESS; char *word; size_t word_len; enum ly_stmt kw; struct lysp_submodule *mod_p = NULL; struct lysf_ctx fctx = {.ctx = ly_ctx}; assert(context && ly_ctx && main_ctx && in && submod); /* create context */ *context = calloc(1, sizeof **context); LY_CHECK_ERR_RET(!(*context), LOGMEM(ly_ctx), LY_EMEM); (*context)->format = LYS_IN_YANG; (*context)->in = in; (*context)->main_ctx = main_ctx; mod_p = calloc(1, sizeof *mod_p); LY_CHECK_ERR_GOTO(!mod_p, LOGMEM(ly_ctx); ret = LY_EMEM, cleanup); mod_p->mod = PARSER_CUR_PMOD(main_ctx)->mod; mod_p->parsing = 1; /* use main context parsed mods adding the current one */ (*context)->parsed_mods = main_ctx->parsed_mods; ly_set_add((*context)->parsed_mods, mod_p, 1, NULL); ly_log_location(NULL, NULL, NULL, in); /* skip redundant but valid characters at the beginning */ ret = skip_redundant_chars(*context); LY_CHECK_GOTO(ret, cleanup); /* "module"/"submodule" */ ret = get_keyword(*context, &kw, &word, &word_len); LY_CHECK_GOTO(ret, cleanup); if (kw == LY_STMT_MODULE) { LOGERR(ly_ctx, LY_EDENIED, "Input data contains module in situation when a submodule is expected."); ret = LY_EINVAL; goto cleanup; } else if (kw != LY_STMT_SUBMODULE) { LOGVAL_PARSER(*context, LY_VCODE_MOD_SUBOMD, lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; } /* substatements */ ret = parse_submodule(*context, mod_p); LY_CHECK_GOTO(ret, cleanup); /* skip redundant but valid characters at the end */ ret = skip_redundant_chars(*context); LY_CHECK_GOTO(ret, cleanup); if (in->current[0]) { LOGVAL_PARSER(*context, LY_VCODE_TRAILING_SUBMOD, 15, in->current, strlen(in->current) > 15 ? "..." : ""); ret = LY_EVALID; goto cleanup; } mod_p->parsing = 0; *submod = mod_p; cleanup: ly_log_location_revert(0, 0, 0, 1); if (ret) { lysp_module_free(&fctx, (struct lysp_module *)mod_p); lysp_yang_ctx_free(*context); *context = NULL; } return ret; } LY_ERR yang_parse_module(struct lysp_yang_ctx **context, struct ly_in *in, struct lys_module *mod) { LY_ERR ret = LY_SUCCESS; char *word; size_t word_len; enum ly_stmt kw; struct lysp_module *mod_p = NULL; struct lysf_ctx fctx = {.ctx = mod->ctx}; /* create context */ *context = calloc(1, sizeof **context); LY_CHECK_ERR_RET(!(*context), LOGMEM(mod->ctx), LY_EMEM); (*context)->format = LYS_IN_YANG; LY_CHECK_ERR_RET(ly_set_new(&(*context)->parsed_mods), free(*context); LOGMEM(mod->ctx), LY_EMEM); (*context)->in = in; (*context)->main_ctx = (struct lysp_ctx *)(*context); mod_p = calloc(1, sizeof *mod_p); LY_CHECK_ERR_GOTO(!mod_p, LOGMEM(mod->ctx), cleanup); mod_p->mod = mod; ly_set_add((*context)->parsed_mods, mod_p, 1, NULL); ly_log_location(NULL, NULL, NULL, in); /* skip redundant but valid characters at the beginning */ ret = skip_redundant_chars(*context); LY_CHECK_GOTO(ret, cleanup); /* "module"/"submodule" */ ret = get_keyword(*context, &kw, &word, &word_len); LY_CHECK_GOTO(ret, cleanup); if (kw == LY_STMT_SUBMODULE) { LOGERR(mod->ctx, LY_EDENIED, "Input data contains submodule which cannot be parsed directly without its main module."); ret = LY_EINVAL; goto cleanup; } else if (kw != LY_STMT_MODULE) { LOGVAL_PARSER((*context), LY_VCODE_MOD_SUBOMD, lyplg_ext_stmt2str(kw)); ret = LY_EVALID; goto cleanup; } /* substatements */ ret = parse_module(*context, mod_p); LY_CHECK_GOTO(ret, cleanup); /* skip redundant but valid characters at the end */ ret = skip_redundant_chars(*context); LY_CHECK_GOTO(ret, cleanup); if (in->current[0]) { LOGVAL_PARSER(*context, LY_VCODE_TRAILING_MOD, 15, in->current, strlen(in->current) > 15 ? "..." : ""); ret = LY_EVALID; goto cleanup; } mod->parsed = mod_p; cleanup: ly_log_location_revert(0, 0, 0, 1); if (ret) { lysp_module_free(&fctx, mod_p); lysp_yang_ctx_free(*context); *context = NULL; } return ret; }