index_get.c

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/*
 * This file is part of the Fun programming language.
 * https://fun-lang.xyz/
 *
 * Copyright 2025 Johannes Findeisen <you@hanez.org>
 * Licensed under the terms of the Apache-2.0 license.
 * https://opensource.org/license/apache-2-0
 */


case OP_INDEX_GET: {
 Value idx = pop_value(vm);
 Value container = pop_value(vm);
#ifdef FUN_DEBUG
 fprintf(stderr, "DEBUG INDEX_GET: container.type=%d idx.type=%d\n",
 container.type, idx.type);
#endif
 if (container.type == VAL_ARRAY) {
 if (idx.type != VAL_INT) {
 fprintf(stderr, "INDEX_GET index must be int for array\n");
 exit(1);
 }
 Value elem;
 if (!array_get_copy(&container, (int)idx.i, &elem)) {
 fprintf(stderr, "Runtime error: index out of range\n");
 exit(1);
 }
 free_value(container);
 free_value(idx);
 push_value(vm, elem);
 } else if (container.type == VAL_MAP) {
 if (idx.type != VAL_STRING) {
 fprintf(stderr, "INDEX_GET key must be string for map\n");
 exit(1);
 }
 Value out;
 if (!map_get_copy(&container, idx.s ? idx.s : "", &out)) {
 out = make_nil();
 }
 free_value(container);
 free_value(idx);
 push_value(vm, out);
 } else {
 fprintf(stderr, "Runtime type error: INDEX_GET expects array or map (got container=%s, index=%s)\n",
 value_type_name(container.type), value_type_name(idx.type));
 exit(1);
 }
 break;
}