mirror of
https://github.com/carbon-language/carbon-lang.git
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Nicholas Bishop
e5957037fb
Support assigning to a variable through an imported macro
Example:
```carbon
import Cpp inline '''
int v = 1;
#define m v
''';
fn F() {
Cpp.m = 2;
}
```
22 lines
758 B
C++
22 lines
758 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. The macro will be evaluated as a
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// constant if possible. Returns an `InstId` on success or
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// `SemIR::ErrorInst::InstId` otherwise.
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auto TryEvaluateMacro(Context& context, SemIR::LocId loc_id,
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SemIR::NameId name_id, clang::MacroInfo* macro_info)
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-> SemIR::InstId;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_CPP_MACROS_H_
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