diff options
Diffstat (limited to 'storage/mroonga/vendor/groonga/lib/ts/ts_expr_parser.h')
| -rw-r--r-- | storage/mroonga/vendor/groonga/lib/ts/ts_expr_parser.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/storage/mroonga/vendor/groonga/lib/ts/ts_expr_parser.h b/storage/mroonga/vendor/groonga/lib/ts/ts_expr_parser.h new file mode 100644 index 00000000..77205983 --- /dev/null +++ b/storage/mroonga/vendor/groonga/lib/ts/ts_expr_parser.h @@ -0,0 +1,107 @@ +/* -*- c-basic-offset: 2 -*- */ +/* + Copyright(C) 2015-2016 Brazil + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License version 2.1 as published by the Free Software Foundation. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA +*/ + +#pragma once + +#include "ts_expr.h" +#include "ts_expr_builder.h" +#include "ts_str.h" +#include "ts_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef enum { + GRN_TS_EXPR_DUMMY_TOKEN, /* No extra data. */ + GRN_TS_EXPR_START_TOKEN, /* No extra data. */ + GRN_TS_EXPR_END_TOKEN, /* No extra data. */ + GRN_TS_EXPR_CONST_TOKEN, /* +data_kind, content and buf. */ + GRN_TS_EXPR_NAME_TOKEN, /* +name. */ + GRN_TS_EXPR_OP_TOKEN, /* +op_type. */ + GRN_TS_EXPR_BRIDGE_TOKEN, /* No extra data. */ + GRN_TS_EXPR_BRACKET_TOKEN /* No extra data. */ +} grn_ts_expr_token_type; + +#define GRN_TS_EXPR_TOKEN_COMMON_MEMBERS\ + grn_ts_str src; /* Source string. */\ + grn_ts_expr_token_type type; /* Token type. */ + +typedef struct { + GRN_TS_EXPR_TOKEN_COMMON_MEMBERS +} grn_ts_expr_token; + +typedef grn_ts_expr_token grn_ts_expr_dummy_token; +typedef grn_ts_expr_token grn_ts_expr_start_token; +typedef grn_ts_expr_token grn_ts_expr_end_token; + +typedef struct { + GRN_TS_EXPR_TOKEN_COMMON_MEMBERS + grn_ts_data_kind data_kind; /* The data kind of the const. */ + grn_ts_any content; /* The const. */ + grn_ts_buf buf; /* Buffer for content.as_text. */ +} grn_ts_expr_const_token; + +typedef grn_ts_expr_token grn_ts_expr_name_token; + +typedef struct { + GRN_TS_EXPR_TOKEN_COMMON_MEMBERS + grn_ts_op_type op_type; /* Operator type. */ +} grn_ts_expr_op_token; + +typedef grn_ts_expr_token grn_ts_expr_bridge_token; +typedef grn_ts_expr_token grn_ts_expr_bracket_token; + +typedef struct { + grn_ts_expr_builder *builder; /* Builder. */ + grn_ts_buf str_buf; /* Buffer for a source string. */ + grn_ts_expr_token **tokens; /* Tokens. */ + size_t n_tokens; /* Number of tokens. */ + size_t max_n_tokens; /* Maximum number of tokens. */ + grn_ts_expr_dummy_token *dummy_tokens; /* Dummy tokens. */ + size_t n_dummy_tokens; /* Number of dummy tokens. */ + size_t max_n_dummy_tokens; /* Maximum number of dummy tokens. */ + grn_ts_expr_token **stack; /* Token stack. */ + size_t stack_depth; /* Token stack's current depth. */ + size_t stack_size; /* Token stack's capacity. */ +} grn_ts_expr_parser; + +/* grn_ts_expr_parser_open() creates a parser. */ +grn_rc grn_ts_expr_parser_open(grn_ctx *ctx, grn_obj *table, + grn_ts_expr_parser **parser); + +/* grn_ts_expr_parser_close() destroys a parser. */ +grn_rc grn_ts_expr_parser_close(grn_ctx *ctx, grn_ts_expr_parser *parser); + +/* grn_ts_expr_parser_parse() parses a string and creates an expression. */ +grn_rc grn_ts_expr_parser_parse(grn_ctx *ctx, grn_ts_expr_parser *parser, + grn_ts_str str, grn_ts_expr **expr); + +/* + * grn_ts_expr_parser_split() splits comma-separated strings into the first + * expression and the rest. + * Note that if `str` is empty, this function returns GRN_END_OF_DATA. + */ +grn_rc grn_ts_expr_parser_split(grn_ctx *ctx, grn_ts_expr_parser *parser, + grn_ts_str str, grn_ts_str *first, + grn_ts_str *rest); + +#ifdef __cplusplus +} +#endif + |