67 lines
2 KiB
C
67 lines
2 KiB
C
/*
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* This file is part of the Fun programming language.
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* https://fun-lang.xyz/
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*
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* Copyright 2025 Johannes Findeisen <you@hanez.org>
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* Licensed under the terms of the Apache-2.0 license.
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* https://opensource.org/license/apache-2-0
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*/
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/**
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* @file index_set.c
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* @brief Implements the OP_INDEX_SET opcode for array and map assignment in the VM.
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*
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* This file handles the OP_INDEX_SET instruction, which assigns a value to an
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* element in an array or a key in a map.
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*
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* Behavior:
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* - Pops the value, index/key, and container from the stack.
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* - For arrays, assigns the value to the specified index.
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* - For maps, assigns the value to the specified key.
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*
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* Error Handling:
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* - Exits with an error if the container is not an array or map, if the index/key
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* is of the wrong type, or if the index is out of bounds.
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*
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* Example:
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* - Bytecode: OP_INDEX_SET
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* - Stack before: [42, 1, [10, 20, 30]]
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* - Stack after: [[10, 42, 30]]
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*/
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case OP_INDEX_SET: {
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Value v = pop_value(vm);
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Value idx = pop_value(vm);
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Value container = pop_value(vm);
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#ifdef FUN_DEBUG
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fprintf(stderr, "DEBUG INDEX_SET: container.type=%d idx.type=%d value.type=%d\n",
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container.type, idx.type, v.type);
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#endif
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if (container.type == VAL_ARRAY) {
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if (idx.type != VAL_INT) {
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fprintf(stderr, "INDEX_SET index must be int for array\n");
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exit(1);
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}
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if (!array_set(&container, (int)idx.i, v)) {
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fprintf(stderr, "Runtime error: index out of range\n");
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exit(1);
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}
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free_value(container);
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free_value(idx);
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} else if (container.type == VAL_MAP) {
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if (idx.type != VAL_STRING) {
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fprintf(stderr, "INDEX_SET key must be string for map\n");
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exit(1);
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}
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if (!map_set(&container, idx.s ? idx.s : "", v)) {
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fprintf(stderr, "Runtime error: map set failed\n");
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exit(1);
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}
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free_value(container);
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free_value(idx);
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} else {
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fprintf(stderr, "Runtime type error: INDEX_SET expects array or map\n");
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exit(1);
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}
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break;
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}
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