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34 lines
890 B
34 lines
890 B
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import <Foundation/Foundation.h>
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typedef struct MSpec_t {
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const char* fileName;
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} MSpec;
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#define SPEC_FILE_NAME(name) .fileName = (name),
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static const MSpec mSpecs[] = {
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{SPEC_FILE_NAME("api")},
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{SPEC_FILE_NAME("graph")},
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{SPEC_FILE_NAME("disk")},
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{SPEC_FILE_NAME("io")},
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};
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void const_struct_field_read_constant() {
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MSpec spec = mSpecs[0];
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NSString* fileName =
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@(spec.fileName); // filename is constant, so this should be O(1)
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}
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void loop_array_struct_constant() {
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const MSpec* const endSpec = ((const MSpec*)mSpecs) + ARRAY_COUNT(mSpecs);
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for (const MSpec* spec = (const MSpec*)mSpecs; spec < endSpec; spec++) {
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NSString* fileName = @(spec->fileName);
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}
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}
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