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LibCpp: Understand preprocessor macro definition and invocation

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The preprocessor now understands when a function-like macro is defined,
and can also parse calls to such macros.

The actual evaluation of function-like macros will be done in a
separate commit.
This commit is contained in:
Itamar 2021-08-11 22:31:43 +03:00 • committed by Andreas Kling
parent c7d3a7789c
commit 8505fcb8ae
4 changed files with 155 additions and 31 deletions
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11
Userland/Utilities/cpp-preprocessor.cpp
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@ -17,6 +17,17 @@ int main(int, char**)
auto content = file->read_all();
Cpp::Preprocessor cpp("other.h", StringView { content });
auto tokens = cpp.process_and_lex();
outln("Definitions:");
for (auto& definition : cpp.definitions()) {
if (definition.value.parameters.is_empty())
outln("{}: {}", definition.key, definition.value.value);
else
outln("{}({}): {}", definition.key, String::join(",", definition.value.parameters), definition.value.value);
}
outln("");
for (auto& token : tokens) {
dbgln("{}", token.to_string());
}