45 lines
1.3 KiB
C
45 lines
1.3 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 to_string.c
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* @brief Implements the OP_TO_STRING opcode for converting values to strings in the VM.
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*
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* This file handles the OP_TO_STRING instruction, which converts a value of any type
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* into its string representation and pushes the result onto the stack.
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*
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* Behavior:
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* - Pops a value from the stack.
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* - Converts the value to a string based on its type:
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* - Integers: Convert to decimal string (e.g., 42 → "42")
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* - Strings: Return a copy of the string
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* - Arrays: Convert to "[array n=<length>]"
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* - Maps: Convert to "{map n=<length>}"
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* - Functions: Convert to "<function@<address>>"
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* - Nil: Convert to "nil"
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* - Pushes the resulting string onto the stack.
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*
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* Error Handling:
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* - Exits with an error if memory allocation fails during string creation.
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*
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* Example:
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* - Bytecode: OP_TO_STRING
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* - Stack before: [42]
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* - Stack after: ["42"]
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*/
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case OP_TO_STRING: {
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Value v = pop_value(vm);
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char *s = value_to_string_alloc(&v);
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Value out = make_string(s ? s : "");
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if (s) free(s);
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free_value(v);
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push_value(vm, out);
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break;
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}
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