/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* NOTE: this file is only meant to be included in the Cypher parsing files,
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* i.e., cypher_gram.y, cypher_keywords.c, and cypher_parser.c.
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* Definitions that are needed outside the Cypher parser should be in
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* cypher_parser.h.
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*/
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#ifndef AG_CYPHER_GRAM_H
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#define AG_CYPHER_GRAM_H
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#include "nodes/nodes.h"
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#include "nodes/pg_list.h"
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#include "parser/ag_scanner.h"
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// override the default data type of locations (yylloc)
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#define YYLTYPE int
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/*
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* Extra data that is passed to the generated parser.
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* The resulting abstract syntax tree is stored in result field.
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*/
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typedef struct cypher_yy_extra
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{
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List *result;
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/*
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* This node currently holds the EXPLAIN ExplainStmt node. It is generic in
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* the event we need to allow more than just EXPLAIN to be passed up.
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*/
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Node *extra;
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} cypher_yy_extra;
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/*
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* cypher_gram_def.h is generated by Bison.
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*
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* nodes/nodes.h and nodes/pg_list.h must be included before this due to the
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* use of Node and List in YYSTYPE.
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*
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* ag_scanner.h must be included before this because ag_scanner_t is one of the
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* parameters of cypher_yyparse() which is generated by Bison.
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*
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* YYLTYPE must be defined before this. (see above)
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*
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* cypher_yy_extra must be defined before this because it is another parameter
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* of cypher_yyparse().
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*/
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#include "parser/cypher_gram_def.h"
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// cypher_parser.c
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int cypher_yylex(YYSTYPE *lvalp, YYLTYPE *llocp, ag_scanner_t scanner);
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void cypher_yyerror(YYLTYPE *llocp, ag_scanner_t scanner,
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cypher_yy_extra *extra, const char *msg);
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#endif
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