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fun/src/vm/core/load_const.c

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/**
* This file is part of the Fun programming language.
* https://hanez.org/project/fun/
*
* Copyright 2025 Johannes Findeisen <you@hanez.org>
* Licensed under the terms of the ISC license.
* https://opensource.org/license/isc-license-txt
*/
/**
* @file load_const.c
* @brief Implements the OP_LOAD_CONST opcode for loading constants in the VM.
*
* This file handles the OP_LOAD_CONST instruction, which loads a constant value
* from the bytecode's constant pool onto the stack.
*
* Behavior:
* - operand is index into constant pool
* - Pushes copy of constant onto stack
*
* Error Handling:
* - Exits if invalid constant index
*
* @author Johannes Findeisen
* @date 2025-10-16
*/
case OP_LOAD_CONST: {
int idx = inst.operand;
if (idx < 0 || idx >= f->fn->const_count) {
fprintf(stderr, "Runtime error: constant index out of range\n");
exit(1);
}
Value c = copy_value(&f->fn->constants[idx]);
push_value(vm, c);
break;
}