60 lines
1.3 KiB
C
60 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 typeof.c
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* @brief Implements the OP_TYPEOF opcode for obtaining a human-readable type name.
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*
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* This snippet is included by the VM's opcode dispatch. It pops a single value
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* from the stack, determines its runtime type, pushes a new string with a
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* human-readable type name (e.g., "Number", "String", "Array"), and frees the
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* original value.
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*
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* Stack contract:
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* - Pops: value (any)
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* - Pushes: string (type name)
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*/
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case OP_TYPEOF: {
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Value v = pop_value(vm);
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const char *tname = "Unknown";
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switch (v.type) {
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case VAL_INT:
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tname = "Number";
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break;
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case VAL_FLOAT:
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tname = "Float";
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break;
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case VAL_BOOL:
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tname = "Boolean";
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break;
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case VAL_STRING:
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tname = "String";
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break;
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case VAL_FUNCTION:
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tname = "Function";
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break;
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case VAL_ARRAY:
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tname = "Array";
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break;
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case VAL_MAP:
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tname = "Map";
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break;
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case VAL_NIL:
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tname = "Nil";
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break;
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default:
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tname = "Unknown";
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break;
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}
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/* push a new string value; make_string duplicates the C string */
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push_value(vm, make_string(tname));
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free_value(v);
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break;
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}
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