39 lines
912 B
C
39 lines
912 B
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 jump_if_false.c
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* @brief Implements the OP_JUMP_IF_FALSE opcode for conditional jumps in the VM.
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*
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* This file handles the OP_JUMP_IF_FALSE instruction, which jumps if the top
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* stack value is falsey (0, false, nil, etc).
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*
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* Behavior:
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* - Pops condition value from stack
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* - Jumps to operand IP if falsey
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* - Continues normally if truthy
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*
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* Used for:
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* - If statements
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* - While loops
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* - Logical expressions
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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_JUMP_IF_FALSE: {
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Value cond = pop_value(vm);
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int truthy = value_is_truthy(&cond);
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free_value(cond);
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if (!truthy) {
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f->ip = inst.operand;
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}
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break;
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}
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