46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/**
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* This file is part of the Fun programming language.
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* https://hanez.org/project/fun/
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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 ISC license.
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* https://opensource.org/license/isc-license-txt
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*/
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/**
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* @file index_of.c
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* @brief Implements the OP_INDEX_OF opcode for finding the index of a value in an array in the VM.
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*
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* This file handles the OP_INDEX_OF instruction, which finds the index of a value in an array.
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* The value and array are popped from the stack, and the index (or -1) is pushed back.
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*
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* Behavior:
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* - Pops the value and array from the stack.
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* - Finds the index of the value in the array.
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* - Pushes the index (or -1 if not found) onto the stack.
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*
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* Error Handling:
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* - Exits with an error if the array is of the wrong type.
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*
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* Example:
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* // Bytecode: OP_INDEX_OF
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* // Stack before: [20, [10, 20, 30]]
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* // Stack after: [1]
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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_INDEX_OF: {
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Value needle = pop_value(vm);
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Value arr = pop_value(vm);
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if (arr.type != VAL_ARRAY) {
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fprintf(stderr, "Runtime type error: INDEX_OF expects (array, value)\n");
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exit(1);
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}
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int idx = array_index_of(&arr, &needle);
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free_value(arr);
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free_value(needle);
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push_value(vm, make_int(idx));
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break;
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}
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