56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
#ifndef RUNTIME_LANGUAGE_H_
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#define RUNTIME_LANGUAGE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "tree_sitter/parser.h"
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#include "runtime/tree.h"
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typedef struct {
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const TSParseAction *actions;
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size_t action_count;
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bool is_reusable;
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bool depends_on_lookahead;
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} TableEntry;
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void ts_language_table_entry(const TSLanguage *, TSStateId, TSSymbol, TableEntry *);
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TSSymbolMetadata ts_language_symbol_metadata(const TSLanguage *, TSSymbol);
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static inline const TSParseAction *ts_language_actions(const TSLanguage *self,
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TSStateId state,
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TSSymbol symbol,
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size_t *count) {
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TableEntry entry;
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ts_language_table_entry(self, state, symbol, &entry);
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*count = entry.action_count;
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return entry.actions;
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}
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static inline TSStateId ts_language_next_state(const TSLanguage *self,
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TSStateId state,
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TSSymbol symbol) {
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if (symbol == ts_builtin_sym_error) {
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return 0;
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} else if (symbol < self->token_count) {
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size_t count;
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const TSParseAction *actions = ts_language_actions(self, state, symbol, &count);
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if (count > 0) {
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TSParseAction action = actions[count - 1];
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if (action.type == TSParseActionTypeShift || action.type == TSParseActionTypeRecover) {
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return action.params.to_state;
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}
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}
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return 0;
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} else {
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return self->parse_table[state * self->symbol_count + symbol];
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // RUNTIME_LANGUAGE_H_
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