zzy
4144f7841c
- 在argparse库中将所有null指针常量替换为nullptr - 更新头文件和源文件中的指针初始化和比较操作 - 修改测试文件中的相关断言检查 - 更新AST定义文件中的注释说明
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
#ifndef __SCC_PARSER_UTILS_H__
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#define __SCC_PARSER_UTILS_H__
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#include "scc_parser.h"
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static inline const scc_lexer_tok_t *scc_parser_peek(scc_parser_t *parser) {
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cbool ok = false;
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const scc_lexer_tok_t *tok = nullptr;
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scc_ring_unsafe_peek_ref(*parser->ring, tok, ok);
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if (ok == false) {
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return nullptr;
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}
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return tok;
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}
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static inline const scc_lexer_tok_t *scc_parser_next(scc_parser_t *parser) {
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cbool ok = false;
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const scc_lexer_tok_t *tok = nullptr;
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scc_ring_unsafe_next_ref(*parser->ring, tok, ok);
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if (ok == false) {
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return nullptr;
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}
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return tok;
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}
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static inline cbool scc_parser_consume_if(scc_parser_t *parser,
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scc_tok_type_t type) {
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cbool ok = false;
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scc_lexer_tok_t *tok = nullptr;
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scc_ring_unsafe_peek_ref(*parser->ring, tok, ok);
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if (ok == false) {
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return nullptr;
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}
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if (tok->type == type) {
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scc_lexer_tok_drop(tok);
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scc_ring_unsafe_pure_next_consume(*parser->ring);
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return true;
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} else {
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return false;
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}
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}
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static inline void scc_parser_store(scc_parser_t *parser) {
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parser->checkpoint = _scc_ring_probe(*parser->ring);
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}
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static inline void scc_parser_restore(scc_parser_t *parser) {
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_scc_ring_probe(*parser->ring) = parser->checkpoint;
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}
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// tok can nullptr it will be safty free
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static inline cbool scc_parser_next_consume(scc_parser_t *parser,
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scc_lexer_tok_t *tok) {
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cbool ok = false;
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scc_lexer_tok_t *raw_tok_ref = nullptr;
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scc_ring_unsafe_next_ref_consume(*parser->ring, raw_tok_ref, ok);
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if (tok == nullptr) {
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scc_lexer_tok_drop(raw_tok_ref);
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} else {
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scc_lexer_tok_move(tok, raw_tok_ref);
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}
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return ok;
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}
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static inline void scc_parser_commit(scc_parser_t *parser) {
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// Memory leak
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scc_ring_consume(*parser->ring);
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}
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static inline void scc_parser_reset(scc_parser_t *parser) {
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scc_ring_reset(*parser->ring);
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}
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#include <scc_pos_log.h>
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static inline scc_pos_t scc_parser_got_current_pos(scc_parser_t *parser) {
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const scc_lexer_tok_t *tok = scc_parser_peek(parser);
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scc_pos_t pos = scc_pos_create();
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if (tok != nullptr)
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pos = tok->loc;
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return pos;
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}
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#endif /* __SCC_PARSER_UTILS_H__ */
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