56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
#pragma once
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#include <Compiler/Clang.h>
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namespace clice {
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/// This class is used to resolve dependent names in the AST.
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/// For dependent names, we cannot know the any information about the name until
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/// the template is instantiated. This can be frustrating, you cannot get
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/// completion, you cannot get go-to-definition, etc. To avoid this, we just use
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/// some heuristics to simplify the dependent names as normal type/expression.
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/// For example, `std::vector<T>::value_type` can be simplified as `T`.
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class TemplateResolver {
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public:
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TemplateResolver(clang::Sema& sema) : sema(sema) {}
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clang::QualType resolve(clang::QualType type);
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clang::QualType resolve(const clang::DependentNameType* type) {
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if(auto iter = resolved.find(type); iter != resolved.end()) {
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return iter->second;
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}
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return resolve(clang::QualType(type, 0));
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}
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clang::QualType resolve(const clang::DependentTemplateSpecializationType* type) {
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if(auto iter = resolved.find(type); iter != resolved.end()) {
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return iter->second;
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}
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return resolve(clang::QualType(type, 0));
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}
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clang::lookup_result resolve(const clang::DependentScopeDeclRefExpr* expr);
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clang::ExprResult resolve(clang::CXXDependentScopeMemberExpr* expr);
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clang::ExprResult resolve(clang::CXXUnresolvedConstructExpr* expr);
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clang::ExprResult resolve(clang::UnresolvedLookupExpr* expr);
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// TODO: use a relative clear way to resolve `UnresolvedLookupExpr`.
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void resolve(clang::UnresolvedUsingValueDecl* decl);
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void resolve(clang::UnresolvedUsingTypenameDecl* decl);
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void resolve(clang::UnresolvedUsingType* type);
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private:
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clang::Sema& sema;
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llvm::DenseMap<const void*, clang::QualType> resolved;
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};
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} // namespace clice
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