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This commit is contained in:
Max Brunsfeld 2014-07-31 13:11:39 -07:00
parent 0d6d09cbd9
commit 412cc93812
4 changed files with 50 additions and 49 deletions
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70
include/tree_sitter/parser.h
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@ -23,8 +23,8 @@ typedef struct TSLexer {
size_t token_start_position;
int reached_end;
TSTree * (* accept_fn)(struct TSLexer *, TSSymbol, int);
int (* advance_fn)(struct TSLexer *);
TSTree *(*accept_fn)(struct TSLexer *, TSSymbol, int);
int (*advance_fn)(struct TSLexer *);
} TSLexer;
static inline size_t ts_lexer_position(const TSLexer *lexer) {
@ -43,7 +43,8 @@ static inline int ts_lexer_advance(TSLexer *lexer) {
return lexer->advance_fn(lexer);
}
static inline TSTree *ts_lexer_accept(TSLexer *lexer, TSSymbol symbol, int is_hidden) {
static inline TSTree *ts_lexer_accept(TSLexer *lexer, TSSymbol symbol,
int is_hidden) {
return lexer->accept_fn(lexer, symbol, is_hidden);
}
@ -90,38 +91,37 @@ struct TSLanguage {
#define LEX_FN() static TSTree *ts_lex(TSLexer *lexer, TSStateId lex_state)
#define DEBUG_LEX(...) \
if (lexer->debug) { \
if (lexer->debug) { \
fprintf(stderr, "\n" __VA_ARGS__); \
}
#define START_LEXER() \
DEBUG_LEX("LEX %d", lex_state); \
char lookahead; \
next_state: \
#define START_LEXER() \
DEBUG_LEX("LEX %d", lex_state); \
char lookahead; \
next_state: \
lookahead = ts_lexer_lookahead_char(lexer); \
DEBUG_LEX("CHAR '%c'", lookahead);
#define START_TOKEN() ts_lexer_start_token(lexer);
#define ADVANCE(state_index) \
{ \
DEBUG_LEX("ADVANCE %d", state_index); \
if (!ts_lexer_advance(lexer)) \
ACCEPT_TOKEN(ts_builtin_sym_end); \
lex_state = state_index; \
goto next_state; \
#define ADVANCE(state_index) \
{ \
DEBUG_LEX("ADVANCE %d", state_index); \
if (!ts_lexer_advance(lexer)) \
ACCEPT_TOKEN(ts_builtin_sym_end); \
lex_state = state_index; \
goto next_state; \
}
#define ACCEPT_TOKEN(symbol) \
{ \
DEBUG_LEX("TOKEN %s", ts_symbol_names[symbol]); \
return ts_lexer_accept(lexer, symbol, \
ts_hidden_symbol_flags[symbol]); \
#define ACCEPT_TOKEN(symbol) \
{ \
DEBUG_LEX("TOKEN %s", ts_symbol_names[symbol]); \
return ts_lexer_accept(lexer, symbol, ts_hidden_symbol_flags[symbol]); \
}
#define LEX_ERROR() \
{ \
DEBUG_LEX("ERROR"); \
#define LEX_ERROR() \
{ \
DEBUG_LEX("ERROR"); \
return ts_lexer_accept(lexer, ts_builtin_sym_error, 0); \
}
@ -153,19 +153,17 @@ struct TSLanguage {
#define ACCEPT_INPUT() \
{ .type = TSParseActionTypeAccept }
#define EXPORT_LANGUAGE(language_name) \
static TSLanguage language = { \
.symbol_count = SYMBOL_COUNT, \
.hidden_symbol_flags = ts_hidden_symbol_flags, \
.parse_table = (const TSParseAction *)ts_parse_actions, \
.lex_states = ts_lex_states, \
.symbol_names = ts_symbol_names, \
.lex_fn = ts_lex, \
}; \
\
const TSLanguage * language_name() { \
return &language; \
}
#define EXPORT_LANGUAGE(language_name) \
static TSLanguage language = { \
.symbol_count = SYMBOL_COUNT, \
.hidden_symbol_flags = ts_hidden_symbol_flags, \
.parse_table = (const TSParseAction *)ts_parse_actions, \
.lex_states = ts_lex_states, \
.symbol_names = ts_symbol_names, \
.lex_fn = ts_lex, \
}; \
\
const TSLanguage *language_name() { return &language; }
#ifdef __cplusplus
}