traxys/tree-sitter
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Add parser error messages

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This commit is contained in:
Max Brunsfeld 2014-01-08 18:35:16 -08:00
parent 614e497ac4
commit 55809f702d
14 changed files with 213 additions and 83 deletions
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32
include/parser.h
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@ -2,6 +2,7 @@
#define __tree_sitter_parser_h__
#include "tree.h"
#include "parse_config.h"
#include <stdio.h>
#ifdef __cplusplus
@ -13,6 +14,7 @@ typedef struct TSStackEntry TSStackEntry;
typedef struct TSParser {
TSTree *tree;
const char *input;
char *error_message;
size_t position;
TSTree *lookahead_node;
TSState lex_state;
@ -23,11 +25,13 @@ typedef struct TSParser {
TSParser TSParserMake(const char *input);
void TSParserShift(TSParser *parser, TSState state);
void TSParserReduce(TSParser *parser, TSSymbol symbol, int child_count);
void TSParserError(TSParser *parser);
void TSParserLexError(TSParser *parser, size_t count, const char **expected_inputs);
void TSParserError(TSParser *parser, size_t count, const char **expected_inputs);
void TSParserAcceptInput(TSParser *parser);
void TSParserAdvance(TSParser *parser, TSState lex_state);
TSState TSParserParseState(const TSParser *parser);
TSState TSParserLexState(const TSParser *parser);
TSParseResult TSParserResult(TSParser *parser);
void TSParserSetLexState(TSParser *parser, TSState state);
char TSParserLookaheadChar(const TSParser *parser);
long TSParserLookaheadSym(const TSParser *parser);
@ -77,19 +81,35 @@ TSParserLexState(parser)
#define REDUCE(symbol, child_count) \
{ TSParserReduce(parser, symbol, child_count); goto next_state; }
#define PARSE_ERROR() \
{ TSParserError(parser); goto done; }
#define PARSE_ERROR(count, inputs) \
{ \
static const char *expected_inputs[] = inputs; \
TSParserError(parser, count, expected_inputs); \
goto done; \
}
#define LEX_ERROR() \
{ TSParserError(parser); goto done; }
#define LEX_ERROR(count, inputs) \
{ \
static const char *expected_inputs[] = inputs; \
TSParserLexError(parser, count, expected_inputs); \
goto done; \
}
#define EXPECT(...) __VA_ARGS__
#define FINISH_PARSER() \
done: \
return parser->tree;
return TSParserResult(parser);
#define FINISH_LEXER() \
done:
#define LEX_PANIC() \
printf("Lex error: unexpected state %ud", LEX_STATE());
#define PARSE_PANIC() \
printf("Parse error: unexpected state %ud", PARSE_STATE());
#ifdef __cplusplus
}
#endif