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feat(ast): 添加复合表达式和初始化器解析支持

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重构AST表达式枚举，将COMPOUND_LITERAL重命名为COMPOUND，
更新相关结构体定义以支持复合字面量的左右表达式向量表示。

添加lvalue表达式类型用于左值处理，实现完整的初始化器解析功能，
包括大括号初始化列表、成员访问和数组下标的处理逻辑。

更新表达式解析器为基于优先级的递归下降解析，修复变量声明中
初始化表达式的内存泄漏问题。

完善类型限定符和存储类说明符的重复检查机制，增强语法分析的准确性。
This commit is contained in:
zzy
2026-03-12 21:14:08 +08:00
parent b00a42a539
commit c46578736a
15 changed files with 495 additions and 225 deletions
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20
libs/ast/src/ast_dump.c
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@@ -52,7 +52,7 @@ static const char *node_type_names[] = {
[SCC_AST_EXPR_CAST] = "CastExpr",
[SCC_AST_EXPR_SIZE_OF] = "SizeofExpr",
[SCC_AST_EXPR_ALIGN_OF] = "AlignofExpr",
[SCC_AST_EXPR_COMPOUND_LITERAL] = "CompoundLiteralExpr",
[SCC_AST_EXPR_COMPOUND] = "CompoundExpr",
[SCC_AST_EXPR_INT_LITERAL] = "IntLiteralExpr",
[SCC_AST_EXPR_FLOAT_LITERAL] = "FloatLiteralExpr",
[SCC_AST_EXPR_CHAR_LITERAL] = "CharLiteralExpr",
@@ -461,15 +461,15 @@ static void dump_expr_impl(scc_ast_expr_t *expr, scc_tree_dump_ctx_t *ctx) {
}
break;
case SCC_AST_EXPR_COMPOUND_LITERAL:
dump_child_node((scc_ast_node_t *)expr->compound_literal.type, ctx,
false);
// 初始化列表
for (size_t i = 0; i < expr->compound_literal.init_list.size; i++) {
dump_child_node(
(scc_ast_node_t *)expr->compound_literal.init_list.data[i], ctx,
i == expr->compound_literal.init_list.size - 1);
}
case SCC_AST_EXPR_COMPOUND:
// dump_child_node((scc_ast_node_t *)expr->compound_literal.type, ctx,
// false);
// // 初始化列表
// for (size_t i = 0; i < expr->compound_literal.init_list.size; i++) {
// dump_child_node(
// (scc_ast_node_t *)expr->compound_literal.init_list.data[i],
// ctx, i == expr->compound_literal.init_list.size - 1);
// }
break;
default: