// scope.c
#include "scope.h"
#include <stdio.h>
#include <stdlib.h>

typedef struct Scope Scope;

Scope* scope_create(Scope* parent) {
    Scope* scope = malloc(sizeof(Scope));
    hmap_init(&scope->symbols);
    scope->parent = parent;
    scope->base_offset = 0;
    scope->cur_offset = 0;
    return scope;
}

void scope_destroy(Scope* scope) {
    hmap_destroy(&scope->symbols);
    free(scope);
}

void scope_insert(Scope* scope, const char* name, void* symbol) {
    if (hmap_contains(&scope->symbols, name)) {
        // 处理重复定义错误
        fprintf(stderr, "Error: Symbol '%s' already defined\n", name);
        exit(EXIT_FAILURE);
    }
    hmap_put(&scope->symbols, name, symbol);
}

void* scope_lookup(Scope* scope, const char* name) {
    void* symbol = NULL;
    while (scope) {
        symbol = hmap_get(&scope->symbols, name);
        if (symbol) break;
        scope = scope->parent;
    }
    return symbol;
}

void* scope_lookup_current(Scope* scope, const char* name) {
    return hmap_get(&scope->symbols, name);
}