[clang] [clang] Move state out of `PreprocessorOptions` (1/n) (PR #86358)
Ben Langmuir via cfe-commits
cfe-commits at lists.llvm.org
Thu Mar 28 13:55:45 PDT 2024
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@@ -736,6 +736,19 @@ class Preprocessor {
State ConditionalStackState = Off;
} PreambleConditionalStack;
+ /// Function for getting the dependency preprocessor directives of a file.
+ ///
+ /// These are directives derived from a special form of lexing where the
+ /// source input is scanned for the preprocessor directives that might have an
+ /// effect on the dependencies for a compilation unit.
+ ///
+ /// Enables a client to cache the directives for a file and provide them
+ /// across multiple compiler invocations.
+ /// FIXME: Allow returning an error.
+ using DependencyDirectivesFn = std::function<std::optional<
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benlangmuir wrote:
I know you're just moving this, but can we make this `llvm::unique_function`? I don't think we ever need to copy it
https://github.com/llvm/llvm-project/pull/86358
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