ZZY
2b4857001c
- 添加 .gitignore 文件，忽略编译器生成的二进制文件 - 重构 lexer.c 文件，改进了关键字处理和字符串处理 - 更新前端的前端、解析器和 AST 相关文件，以适应新的词法分析器 - 优化了 token 相关的定义和函数，引入了新的 token 类型
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
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#include "../ast.h"
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#include "../parser.h"
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#include "../symtab/symtab.h"
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#ifndef BLOCK_MAX_NODE
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#define BLOCK_MAX_NODE (1024)
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#endif
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ast_node_t* new_ast_node_block() {
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ast_node_t* node = new_ast_node();
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node->type = NT_BLOCK;
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vector_init(node->block.children);
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return node;
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}
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ast_node_t* parse_block(parser_t* parser) {
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symtab_enter_scope(parser->symtab);
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tok_stream_t *tokbuf = &parser->tokbuf;
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flush_peek_tok(tokbuf);
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cc_tktype_t ttype;
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ast_node_t* node = new_ast_node_block();
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expect_pop_tok(tokbuf, TOKEN_L_BRACE);
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ast_node_t* child = NULL;
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while (1) {
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if (peek_decl(tokbuf)) {
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child = parse_decl(parser);
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vector_push(node->block.children, child);
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continue;
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}
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flush_peek_tok(tokbuf);
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ttype = peek_tok_type(tokbuf);
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switch (ttype) {
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case TOKEN_R_BRACE: {
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pop_tok(tokbuf);
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goto END;
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}
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default: {
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child = parse_stmt(parser);
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vector_push(node->block.children, child);
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break;
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}
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}
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}
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END:
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symtab_leave_scope(parser->symtab);
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return node;
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}
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