61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
// Metamethods are methods that all types share for hashing, equality, comparison, and textifying
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#include <stdint.h>
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#include <string.h>
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#include "arrays.h"
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#include "bools.h"
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#include "channels.h"
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#include "functiontype.h"
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#include "metamethods.h"
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#include "optionals.h"
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#include "pointers.h"
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#include "siphash.h"
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#include "tables.h"
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#include "text.h"
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#include "util.h"
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PUREFUNC public uint64_t generic_hash(const void *obj, const TypeInfo_t *type)
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{
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if (type->metamethods.hash)
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return type->metamethods.hash(obj, type);
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return siphash24((void*)obj, (size_t)(type->size));
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}
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PUREFUNC public int32_t generic_compare(const void *x, const void *y, const TypeInfo_t *type)
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{
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if (x == y) return 0;
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if (type->metamethods.compare)
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return type->metamethods.compare(x, y, type);
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return (int32_t)memcmp((void*)x, (void*)y, (size_t)(type->size));
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}
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PUREFUNC public bool generic_equal(const void *x, const void *y, const TypeInfo_t *type)
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{
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if (x == y) return true;
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if (type->metamethods.equal)
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return type->metamethods.equal(x, y, type);
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return (generic_compare(x, y, type) == 0);
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}
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public Text_t generic_as_text(const void *obj, bool colorize, const TypeInfo_t *type)
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{
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if (!type->metamethods.as_text)
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fail("No text metamethod provided for type!");
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return type->metamethods.as_text(obj, colorize, type);
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}
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public int generic_print(const void *obj, bool colorize, const TypeInfo_t *type)
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{
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Text_t text = generic_as_text(obj, colorize, type);
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return Text$print(stdout, text) + printf("\n");
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}
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// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
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