ZZY
05c637e594
- 重命名和重构了多个文件，包括 lexer、parser 和 AST 相关代码 - 添加了日志功能，使用 LOG_* 宏替代原有的 error 和 warn 函数 - 优化了错误处理和内存分配方式 - 调整了代码结构，提高了模块化和可读性
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
// symtab.c
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#include "../../frontend.h"
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#include <lib/core.h>
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#include "scope.h"
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#include "symtab.h"
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typedef symtab_t symtab_t;
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typedef struct Scope Scope;
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void init_symtab(symtab_t* symtab) {
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symtab->global_scope = scope_create(NULL);
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symtab->cur_scope = symtab->global_scope;
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}
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void del_symtab(symtab_t* symtab) {
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scope_destroy(symtab->global_scope);
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}
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void symtab_enter_scope(symtab_t* symtab) {
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struct Scope* scope = scope_create(symtab->cur_scope);
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scope->base_offset = symtab->cur_scope->base_offset + symtab->cur_scope->cur_offset;
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symtab->cur_scope = scope;
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}
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void symtab_leave_scope(symtab_t* symtab) {
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Scope * scope = symtab->cur_scope;
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if (scope == NULL) {
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LOG_ERROR("cannot leave NULL scope or global scope");
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}
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symtab->cur_scope = symtab->cur_scope->parent;
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scope_destroy(scope);
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}
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void* symtab_add_symbol(symtab_t* symtab, const char* name, void* ast_node, int can_duplicate) {
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struct Scope* scope = symtab->cur_scope;
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void* node = scope_lookup_current(scope, name);
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if (node != NULL) {
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if (!can_duplicate) {
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LOG_ERROR("duplicate symbol %s", name);
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}
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return node;
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}
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scope_insert(scope, name, ast_node);
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return node;
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}
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void* symtab_lookup_symbol(symtab_t* symtab, const char* name) {
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return scope_lookup(symtab->cur_scope, name);
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}
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