40 lines
2.1 KiB
C
40 lines
2.1 KiB
C
#ifndef COMMON_RESULT_H
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#define COMMON_RESULT_H
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#include "common/linked.h"
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#include "common/maybe_unused.h"
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#include <stdbool.h>
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#define RESULT(VALUE, ERROR, STRUCT_NAME) \
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typedef struct { \
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bool ok; \
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union { \
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VALUE value; \
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ERROR error; \
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}; \
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} STRUCT_NAME;
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#define RESULT_CTORS(VALUE, ERROR, STRUCT_NAME, FUNCTION_PREFIX) \
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MAYBE_UNUSED static inline STRUCT_NAME FUNCTION_PREFIX##_ok(VALUE value) \
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{ \
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return (STRUCT_NAME) { \
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.ok = true, \
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.value = value, \
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}; \
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} \
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\
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MAYBE_UNUSED static inline STRUCT_NAME FUNCTION_PREFIX##_error(ERROR error \
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) \
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{ \
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return (STRUCT_NAME) { \
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.ok = false, \
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.error = error, \
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}; \
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}
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#define RESULT_WITH_CTORS(VALUE, ERROR, STRUCT_NAME, FUNCTION_PREFIX) \
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RESULT(VALUE, ERROR, STRUCT_NAME) \
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RESULT_CTORS(VALUE, ERROR, STRUCT_NAME, FUNCTION_PREFIX)
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#endif
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