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fun/src/vm/arrays/enumerate.c

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C

/**
* 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
*/
/**
* @file enumerate.c
* @brief Implements the OP_ENUMERATE opcode for enumerating arrays in the VM.
*
* This file handles the OP_ENUMERATE instruction, which creates an array of [index, value] pairs
* from an array. The array is popped from the stack, and the new array is pushed back.
*
* Behavior:
* - Pops the array from the stack.
* - Creates a new array of [index, value] pairs.
* - Pushes the new array onto the stack.
*
* Error Handling:
* - Exits with an error if the array is of the wrong type.
*
* Example:
* // Bytecode: OP_ENUMERATE
* // Stack before: [[10, 20, 30]]
* // Stack after: [[[0, 10], [1, 20], [2, 30]]]
*
* @author Johannes Findeisen
* @date 2025-10-16
*/
case OP_ENUMERATE: {
Value arr = pop_value(vm);
if (arr.type != VAL_ARRAY) {
fprintf(stderr, "Runtime type error: ENUMERATE expects array\n");
exit(1);
}
Value out = bi_enumerate(&arr);
free_value(arr);
push_value(vm, out);
break;
}