53 lines
1.5 KiB
C
53 lines
1.5 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 insert.c
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* @brief Implements the OP_INSERT opcode for inserting elements into arrays in the VM.
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*
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* This file handles the OP_INSERT instruction, which inserts a value into an array
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* at a specified index. The array, index, and value are popped from the stack, and the
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* new length of the array is pushed back onto the stack.
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*
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* Behavior:
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* - Pops the value, index, and array from the stack.
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* - Inserts the value into the array at the specified index.
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* - Pushes the new length of the array onto the stack.
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*
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* Error Handling:
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* - Exits with an error if the array or index is of the wrong type.
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* - Exits with an error if memory allocation fails during the insertion.
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*
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* Example:
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* // Bytecode: OP_INSERT
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* // Stack before: [42, 1, [10, 20, 30]]
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* // Stack after: [4]
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*
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* @author Johannes Findeisen
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* @date 2025-10-16
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*/
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case OP_INSERT: {
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Value v = pop_value(vm);
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Value idx = pop_value(vm);
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Value arr = pop_value(vm);
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if (arr.type != VAL_ARRAY || idx.type != VAL_INT) {
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fprintf(stderr, "Runtime type error: ARR_INSERT expects (array, int, value)\n");
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exit(1);
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}
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int n = array_insert(&arr, (int)idx.i, v);
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if (n < 0) {
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fprintf(stderr, "Runtime error: insert failed (OOM?)\n");
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exit(1);
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}
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free_value(arr);
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free_value(idx);
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push_value(vm, make_int(n));
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break;
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}
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