mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Ivana Ivanovska
093700b274
Adding support for macros with boolean literals.
Demo:
```c++
// main.carbon
library "Main";
import Core library "io";
import Cpp inline '''
#define M_TRUE true
''';
fn Run() -> i32 {
let a: bool = Cpp.M_TRUE;
if (a) {
Core.Print(1);
} else {
Core.Print(0);
}
return 0;
}
```
```
$ bazel-bin/toolchain/carbon compile main.carbon
$ bazel-bin/toolchain/carbon link main.o \--output=demo_carbon
$ ./demo_carbon
1
```
Part of #6303
22 lines
810 B
C++
22 lines
810 B
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_TOOLCHAIN_CHECK_CPP_MACROS_H_
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#define CARBON_TOOLCHAIN_CHECK_CPP_MACROS_H_
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#include "toolchain/check/context.h"
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namespace Carbon::Check {
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// Tries to evaluate the given macro to a constant expression. Returns the
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// evaluated expression on success or nullptr otherwise.
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// TODO: Add support for all literal types.
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auto TryEvaluateMacroToConstant(Context& context, SemIR::LocId loc_id,
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SemIR::NameId name_id,
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clang::MacroInfo* macro_info) -> clang::Expr*;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_CPP_MACROS_H_
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