mlangkabel
9d17e2e7e6
* switched to getting the template parameter's parent from the ASTContext instead of using the DeclContext
556 lines
21 KiB
C++
556 lines
21 KiB
C++
#include "data/parser/cxx/name_resolver/CxxDeclNameResolver.h"
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#include <clang/AST/DeclTemplate.h>
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#include <clang/AST/ASTContext.h>
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#include "data/parser/cxx/name/CxxFunctionDeclName.h"
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#include "data/parser/cxx/name/CxxVariableDeclName.h"
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#include "data/parser/cxx/name/CxxStaticFunctionDeclName.h"
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#include "data/parser/cxx/name_resolver/CxxSpecifierNameResolver.h"
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#include "data/parser/cxx/name_resolver/CxxTemplateArgumentNameResolver.h"
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#include "data/parser/cxx/name_resolver/CxxTypeNameResolver.h"
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#include "data/parser/cxx/CanonicalFilePathCache.h"
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#include "data/parser/cxx/utilityClang.h"
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#include "utility/file/FilePath.h"
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#include "utility/ScopedSwitcher.h"
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#include "utility/utilityString.h"
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CxxDeclNameResolver::CxxDeclNameResolver(std::shared_ptr<CanonicalFilePathCache> canonicalFilePathCache)
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: CxxNameResolver(canonicalFilePathCache, std::vector<const clang::Decl*>())
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, m_currentDecl(nullptr)
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{
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}
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CxxDeclNameResolver::CxxDeclNameResolver(
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std::shared_ptr<CanonicalFilePathCache> canonicalFilePathCache,
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std::vector<const clang::Decl*> ignoredContextDecls
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)
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: CxxNameResolver(canonicalFilePathCache, ignoredContextDecls)
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, m_currentDecl(nullptr)
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{
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}
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CxxDeclNameResolver::~CxxDeclNameResolver()
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{
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}
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std::shared_ptr<CxxDeclName> CxxDeclNameResolver::getName(const clang::NamedDecl* declaration)
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{
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declaration = utility::getFirstDecl(declaration);
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std::shared_ptr<CxxDeclName> declName;
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if ((declaration) &&
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(clang::isa<clang::CXXRecordDecl>(declaration)) &&
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(clang::dyn_cast<clang::CXXRecordDecl>(declaration)->isLambda()))
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{
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// avoid triggering assert
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clang::DeclarationName Name =
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clang::dyn_cast<clang::CXXRecordDecl>(declaration)->getASTContext().DeclarationNames.getCXXOperatorName(clang::OO_Call);
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clang::DeclContext::lookup_result Calls = clang::dyn_cast<clang::CXXRecordDecl>(declaration)->lookup(Name);
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if (Calls.empty())
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{
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declaration = nullptr;
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declName = std::make_shared<CxxDeclName>("unsolved-lambda", std::vector<std::string>());
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}
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else
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{
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declaration = clang::dyn_cast<clang::CXXRecordDecl>(declaration)->getLambdaCallOperator();
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}
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}
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if (declaration)
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{
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declName = getDeclName(clang::dyn_cast<const clang::NamedDecl>(declaration));
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if (declName)
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{
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if (const clang::UsingDecl* usingDecl = clang::dyn_cast_or_null<clang::UsingDecl>(declaration))
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{
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CxxSpecifierNameResolver specifierNameResolver(getCanonicalFilePathCache(), getIgnoredContextDecls());
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declName->setParent(specifierNameResolver.getName(usingDecl->getQualifier()));
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}
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else if (
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clang::isa<clang::TemplateTypeParmDecl>(declaration) ||
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clang::isa<clang::NonTypeTemplateParmDecl>(declaration) ||
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clang::isa<clang::TemplateTemplateParmDecl>(declaration)
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) {
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clang::ASTContext& context = declaration->getASTContext();
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clang::ASTContext::DynTypedNodeList parents = context.getParents(*declaration);
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for (const clang::ast_type_traits::DynTypedNode* parent = parents.begin(); parent != parents.end(); parent++)
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{
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const clang::Decl* parentDecl = parent->get<clang::Decl>();
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while (parentDecl != nullptr)
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{
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parentDecl = utility::getFirstDecl(parentDecl);
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if (const clang::TemplateDecl* parentTemplateDecl = clang::dyn_cast_or_null<clang::TemplateDecl>(parentDecl))
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{
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if (!ignoresContext(parentTemplateDecl) && !ignoresContext(parentTemplateDecl->getTemplatedDecl()))
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{
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declName->setParent(getName(parentTemplateDecl));
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}
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break;
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}
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else if (const clang::ClassTemplatePartialSpecializationDecl* parentTemplateDecl = clang::dyn_cast_or_null<clang::ClassTemplatePartialSpecializationDecl>(parentDecl))
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{
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if (!ignoresContext(parentDecl))
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{
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declName->setParent(getName(parentTemplateDecl));
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}
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break;
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}
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if (const clang::DeclContext* parentDeclContext = parentDecl->getDeclContext())
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{
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if (ignoresContext(parentDeclContext))
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{
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break;
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}
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parentDecl = clang::dyn_cast_or_null<clang::Decl>(parentDeclContext);
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if (parentDecl)
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{
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if (clang::TemplateDecl* describedTemplate = parentDecl->getDescribedTemplate())
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{
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parentDecl = describedTemplate;
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}
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}
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}
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else
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{
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break;
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}
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}
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}
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}
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else
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{
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declName->setParent(getContextName(declaration->getDeclContext()));
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}
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}
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}
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return declName;
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}
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std::shared_ptr<CxxName> CxxDeclNameResolver::getContextName(const clang::DeclContext* declContext)
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{
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std::shared_ptr<CxxName> contextDeclName;
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if (declContext && !ignoresContext(declContext))
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{
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if (const clang::NamedDecl* contextNamedDecl = clang::dyn_cast_or_null<clang::NamedDecl>(declContext))
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{
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contextDeclName = getDeclName(contextNamedDecl);
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if (contextDeclName)
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{
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contextDeclName->setParent(getContextName(declContext->getParent()));
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}
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else
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{
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contextDeclName = getContextName(declContext->getParent());
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}
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}
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}
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return contextDeclName;
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}
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std::shared_ptr<CxxDeclName> CxxDeclNameResolver::getDeclName(const clang::NamedDecl* declaration)
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{
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if (declaration)
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{
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ScopedSwitcher<const clang::NamedDecl*> switcher(m_currentDecl, declaration);
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std::string declNameString = declaration->getNameAsString();
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if (const clang::TypeAliasDecl* typeAliasDecl = clang::dyn_cast_or_null<clang::TypeAliasDecl>(declaration))
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{
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clang::TypeAliasTemplateDecl* templatedDeclaration = typeAliasDecl->getDescribedAliasTemplate();
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if (templatedDeclaration)
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{
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return getDeclName(templatedDeclaration);
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}
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}
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if (const clang::RecordDecl* recordDecl = clang::dyn_cast_or_null<clang::RecordDecl>(declaration))
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{
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if (recordDecl->isLambda())
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{
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// we skip this node because its child (the lambda call operator) has already been recorded.
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return std::shared_ptr<CxxDeclName>();
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}
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else if (declNameString.empty())
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{
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std::string symbolKindName = "class";
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if (recordDecl->isStruct())
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{
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symbolKindName = "struct";
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}
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else if (recordDecl->isUnion())
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{
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symbolKindName = "union";
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}
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return std::make_shared<CxxDeclName>(getNameForAnonymousSymbol(symbolKindName, declaration), std::vector<std::string>());
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}
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else if (const clang::CXXRecordDecl* cxxRecordDecl = clang::dyn_cast_or_null<clang::CXXRecordDecl>(declaration))
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{
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clang::ClassTemplateDecl* templateClassDeclaration = cxxRecordDecl->getDescribedClassTemplate();
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if (templateClassDeclaration)
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{
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return getDeclName(templateClassDeclaration);
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}
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else if (clang::isa<clang::ClassTemplatePartialSpecializationDecl>(declaration))
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{
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const clang::ClassTemplatePartialSpecializationDecl* partialSpecializationDecl =
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clang::dyn_cast<clang::ClassTemplatePartialSpecializationDecl>(declaration);
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clang::TemplateParameterList* parameterList = partialSpecializationDecl->getTemplateParameters();
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unsigned int currentParameterIndex = 0;
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std::vector<std::string> templateParameters;
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const clang::TemplateArgumentList& templateArgumentList = partialSpecializationDecl->getTemplateArgs();
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const int templateArgumentCount = templateArgumentList.size();
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for (int i = 0; i < templateArgumentCount; i++)
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{
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const clang::TemplateArgument& templateArgument = templateArgumentList.get(i);
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if (templateArgument.isDependent()) // IMPORTANT_TODO: fix case when arg depends on template parameter of outer template class, or depends on first template parameter.
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{
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if(currentParameterIndex < parameterList->size())
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{
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templateParameters.push_back(getTemplateParameterString(parameterList->getParam(currentParameterIndex)));
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}
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else
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{
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//this if fixes the crash, but not the problem TODO
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// const clang::SourceManager& sourceManager = declaration->getASTContext().getSourceManager();
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// LOG_ERROR("Template getParam out of Range " + declaration->getLocation().printToString(sourceManager));
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}
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currentParameterIndex++;
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}
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else
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{
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templateParameters.push_back(getTemplateArgumentName(templateArgument));
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}
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}
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return std::make_shared<CxxDeclName>(declNameString, templateParameters);
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}
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else if (clang::isa<clang::ClassTemplateSpecializationDecl>(declaration))
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{
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std::vector<std::string> templateArguments;
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const clang::TemplateArgumentList& templateArgumentList = clang::dyn_cast<clang::ClassTemplateSpecializationDecl>(declaration)->getTemplateArgs();
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for (size_t i = 0; i < templateArgumentList.size(); i++)
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{
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templateArguments.push_back(getTemplateArgumentName(templateArgumentList.get(i)));
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}
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return std::make_shared<CxxDeclName>(declNameString, templateArguments);
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}
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}
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}
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else if (clang::isa<clang::FunctionDecl>(declaration))
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{
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const clang::FunctionDecl* functionDecl = clang::dyn_cast<clang::FunctionDecl>(declaration);
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std::string functionName = declNameString;
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std::vector<std::string> templateArguments;
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if ((clang::dyn_cast_or_null<clang::CXXMethodDecl>(functionDecl)) &&
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(clang::dyn_cast_or_null<clang::CXXMethodDecl>(functionDecl)->getParent()->isLambda()))
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{
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const clang::SourceManager& sourceManager = declaration->getASTContext().getSourceManager();
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const clang::PresumedLoc& presumedBegin = sourceManager.getPresumedLoc(clang::dyn_cast_or_null<clang::CXXMethodDecl>(functionDecl)->getParent()->getLocStart());
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functionName = "lambda at " + std::to_string(presumedBegin.getLine()) + ":" + std::to_string(presumedBegin.getColumn());
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}
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else if (clang::FunctionTemplateDecl* templateFunctionDeclaration = functionDecl->getDescribedFunctionTemplate())
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{
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templateArguments = getTemplateParameterStrings(templateFunctionDeclaration);
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}
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else if (functionDecl->isFunctionTemplateSpecialization())
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{
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const clang::TemplateArgumentList* templateArgumentList = functionDecl->getTemplateSpecializationArgs();
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for (size_t i = 0; i < templateArgumentList->size(); i++)
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{
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const clang::TemplateArgument& templateArgument = templateArgumentList->get(i);
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templateArguments.push_back(getTemplateArgumentName(templateArgument));
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}
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}
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bool isStatic = false;
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bool isConst = false;
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if (clang::isa<clang::CXXMethodDecl>(declaration))
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{
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const clang::CXXMethodDecl* methodDecl = clang::dyn_cast<const clang::CXXMethodDecl>(declaration);
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isStatic = methodDecl->isStatic();
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isConst = methodDecl->isConst();
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}
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else
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{
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isStatic = functionDecl->getStorageClass() == clang::SC_Static;
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}
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CxxTypeNameResolver typenNameResolver(getCanonicalFilePathCache(), getIgnoredContextDecls());
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typenNameResolver.ignoreContextDecl(functionDecl);
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std::shared_ptr<CxxTypeName> returnTypeName = CxxTypeName::makeUnsolvedIfNull(typenNameResolver.getName(functionDecl->getReturnType()));
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std::vector<std::shared_ptr<CxxTypeName>> parameterTypeNames;
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for (unsigned int i = 0; i < functionDecl->param_size(); i++)
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{
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parameterTypeNames.push_back(CxxTypeName::makeUnsolvedIfNull(typenNameResolver.getName(functionDecl->parameters()[i]->getType())));
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}
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if (!clang::isa<clang::CXXMethodDecl>(declaration) && isStatic)
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{
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return std::make_shared<CxxStaticFunctionDeclName>(
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functionName,
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templateArguments,
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returnTypeName,
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parameterTypeNames,
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getTranslationUnitMainFileName(declaration)
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);
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}
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return std::make_shared<CxxFunctionDeclName>(
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functionName,
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templateArguments,
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returnTypeName,
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parameterTypeNames,
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isConst,
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isStatic
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);
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}
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else if (clang::isa<clang::FunctionTemplateDecl>(declaration))
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{
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const clang::FunctionTemplateDecl* functionTemplateDecl = clang::dyn_cast<clang::FunctionTemplateDecl>(declaration);
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return getDeclName(functionTemplateDecl->getTemplatedDecl());
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}
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else if (clang::isa<clang::TemplateDecl>(declaration)) // also triggers on TemplateTemplateParmDecl
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{
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return std::make_shared<CxxDeclName>(declNameString, getTemplateParameterStrings(clang::dyn_cast<clang::TemplateDecl>(declaration)));
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}
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else if (clang::isa<clang::FieldDecl>(declaration))
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{
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const clang::FieldDecl* fieldDecl = clang::dyn_cast<clang::FieldDecl>(declaration);
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CxxTypeNameResolver typenNameResolver(getCanonicalFilePathCache(), getIgnoredContextDecls());
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typenNameResolver.ignoreContextDecl(fieldDecl);
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std::shared_ptr<CxxTypeName> typeName = CxxTypeName::makeUnsolvedIfNull(typenNameResolver.getName(fieldDecl->getType()));
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return std::make_shared<CxxVariableDeclName>(declNameString, std::vector<std::string>(), typeName, false);
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}
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else if (clang::isa<clang::NamespaceDecl>(declaration) && clang::dyn_cast<clang::NamespaceDecl>(declaration)->isAnonymousNamespace())
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{
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return std::make_shared<CxxDeclName>(getNameForAnonymousSymbol("namespace", declaration), std::vector<std::string>());
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}
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else if (clang::isa<clang::EnumDecl>(declaration) && declNameString.empty())
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{
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return std::make_shared<CxxDeclName>(getNameForAnonymousSymbol("enum", declaration), std::vector<std::string>());
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}
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else if (
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(
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clang::isa<clang::TemplateTypeParmDecl>(declaration) ||
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clang::isa<clang::NonTypeTemplateParmDecl>(declaration) ||
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clang::isa<clang::TemplateTemplateParmDecl>(declaration)
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) && declNameString.empty())
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{
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return std::make_shared<CxxDeclName>(getNameForAnonymousSymbol("template parameter", declaration), std::vector<std::string>());
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}
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else if (clang::isa<clang::ParmVarDecl>(declaration) && declNameString.empty())
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{
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return std::make_shared<CxxDeclName>(getNameForAnonymousSymbol("parameter", declaration), std::vector<std::string>());
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}
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else if (clang::isa<clang::VarDecl>(declaration))
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{
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const clang::VarDecl* varDecl = clang::dyn_cast<clang::VarDecl>(declaration);
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if (varDecl->getParentFunctionOrMethod() == NULL)
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{
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bool isStatic = false;
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if (varDecl->getAccess() != clang::AS_none)
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{
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// var is declared inside a type and must be static (non-statics are stored as clang::FieldDecl)
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isStatic = true;
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}
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else
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{
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// nothing todo, varDecl is global (and non-static)
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}
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CxxTypeNameResolver typenNameResolver(getCanonicalFilePathCache(), getIgnoredContextDecls());
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typenNameResolver.ignoreContextDecl(varDecl);
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std::shared_ptr<CxxTypeName> typeName = CxxTypeName::makeUnsolvedIfNull(typenNameResolver.getName(varDecl->getType()));
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std::string varName = declNameString;
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if (utility::getSymbolKind(varDecl) == SYMBOL_GLOBAL_VARIABLE &&
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varDecl->getStorageClass() == clang::SC_Static)
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{
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// if a global variable is static it is only visible in the current translation unit. Therefore if multiple instances of that global variable
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// may be generated (one for each translation unit) we add the name of the translation unit's source file.
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// If that global variable definition is const, we add the name of the (maybe header) file that variable is defined in instead. This causes
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// different instances of the variable that all MUST contain the same value to be merged into a single node in Sourcetrail.
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std::string scopeFileName = "";
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{
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if (varDecl->getType().isConstQualified())
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{
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scopeFileName = getDeclarationFileName(declaration);
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}
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else
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{
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scopeFileName = getTranslationUnitMainFileName(declaration);
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}
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}
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if (!scopeFileName.empty())
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{
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varName = declNameString + " (" + scopeFileName + ")";
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}
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}
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return std::make_shared<CxxVariableDeclName>(varName, std::vector<std::string>(), typeName, isStatic);
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}
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}
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if (!declNameString.empty())
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{
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return std::make_shared<CxxDeclName>(declNameString, std::vector<std::string>(), std::shared_ptr<CxxName>());
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}
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}
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// LOG_ERROR("could not resolve name of decl at: " + declaration->getLocation().printToString(sourceManager));
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return std::make_shared<CxxDeclName>(getNameForAnonymousSymbol("symbol", declaration), std::vector<std::string>());
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}
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std::string CxxDeclNameResolver::getTranslationUnitMainFileName(const clang::Decl* declaration)
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{
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const clang::SourceManager& sourceManager = declaration->getASTContext().getSourceManager();
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clang::FileID fileId = sourceManager.getMainFileID();
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if (fileId.isValid())
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{
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const clang::FileEntry* fileEntry = sourceManager.getFileEntryForID(fileId);
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return getCanonicalFilePathCache()->getCanonicalFilePath(fileEntry).fileName();
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}
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return "";
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}
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std::string CxxDeclNameResolver::getDeclarationFileName(const clang::Decl* declaration)
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{
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const clang::SourceManager& sourceManager = declaration->getASTContext().getSourceManager();
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const clang::FileEntry* fileEntry = sourceManager.getFileEntryForID(sourceManager.getFileID(declaration->getLocStart()));
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if (fileEntry != nullptr && fileEntry->isValid())
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{
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return getCanonicalFilePathCache()->getCanonicalFilePath(fileEntry).fileName();
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}
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return getCanonicalFilePathCache()->getCanonicalFilePath(sourceManager.getPresumedLoc(declaration->getLocStart()).getFilename()).fileName();
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}
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std::string CxxDeclNameResolver::getNameForAnonymousSymbol(const std::string& symbolKindName, const clang::Decl* declaration)
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{
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const clang::SourceManager& sourceManager = declaration->getASTContext().getSourceManager();
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const clang::PresumedLoc& presumedBegin = sourceManager.getPresumedLoc(declaration->getLocStart());
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if (presumedBegin.isValid())
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{
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return "anonymous " + symbolKindName +
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" (" + getDeclarationFileName(declaration) + "<" + std::to_string(presumedBegin.getLine()) + ":" + std::to_string(presumedBegin.getColumn()) + ">)";
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}
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return "anonymous " + symbolKindName;
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}
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std::vector<std::string> CxxDeclNameResolver::getTemplateParameterStrings(const clang::TemplateDecl* templateDecl)
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{
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std::vector<std::string> templateParameterStrings;
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clang::TemplateParameterList* parameterList = templateDecl->getTemplateParameters();
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for (size_t i = 0; i < parameterList->size(); i++)
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{
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templateParameterStrings.push_back(getTemplateParameterString(parameterList->getParam(i)));
|
|
}
|
|
return templateParameterStrings;
|
|
}
|
|
|
|
std::string CxxDeclNameResolver::getTemplateParameterString(const clang::NamedDecl* parameter)
|
|
{
|
|
std::string templateParameterTypeString;
|
|
|
|
if (parameter)
|
|
{
|
|
clang::Decl::Kind templateParameterKind = parameter->getKind();
|
|
switch (templateParameterKind)
|
|
{
|
|
case clang::Decl::NonTypeTemplateParm:
|
|
templateParameterTypeString = getTemplateParameterTypeString(clang::dyn_cast<clang::NonTypeTemplateParmDecl>(parameter));
|
|
break;
|
|
case clang::Decl::TemplateTypeParm:
|
|
templateParameterTypeString = getTemplateParameterTypeString(clang::dyn_cast<clang::TemplateTypeParmDecl>(parameter));
|
|
break;
|
|
case clang::Decl::TemplateTemplateParm:
|
|
templateParameterTypeString = getTemplateParameterTypeString(clang::dyn_cast<clang::TemplateTemplateParmDecl>(parameter));
|
|
break;
|
|
default:
|
|
// LOG_ERROR("Unhandled kind of template parameter.");
|
|
break;
|
|
}
|
|
|
|
std::string parameterName = parameter->getName();
|
|
if (!parameterName.empty())
|
|
{
|
|
templateParameterTypeString += " " + parameterName;
|
|
}
|
|
}
|
|
return templateParameterTypeString;
|
|
}
|
|
|
|
std::string CxxDeclNameResolver::getTemplateParameterTypeString(const clang::NonTypeTemplateParmDecl* parameter)
|
|
{
|
|
CxxTypeNameResolver typeNameResolver(getCanonicalFilePathCache(), getIgnoredContextDecls());
|
|
|
|
if (clang::isa<clang::TemplateDecl>(m_currentDecl))
|
|
{
|
|
typeNameResolver.ignoreContextDecl(clang::dyn_cast<clang::TemplateDecl>(m_currentDecl)->getTemplatedDecl());
|
|
}
|
|
else // works for partial template specializations
|
|
{
|
|
typeNameResolver.ignoreContextDecl(m_currentDecl);
|
|
}
|
|
|
|
std::string typeString;
|
|
|
|
std::shared_ptr<CxxTypeName> typeName = CxxTypeName::makeUnsolvedIfNull(typeNameResolver.getName(parameter->getType()));
|
|
typeString = typeName->toString();
|
|
|
|
if (parameter->isTemplateParameterPack())
|
|
{
|
|
typeString += "...";
|
|
}
|
|
return typeString;
|
|
}
|
|
|
|
std::string CxxDeclNameResolver::getTemplateParameterTypeString(const clang::TemplateTypeParmDecl* parameter)
|
|
{
|
|
std::string typeString = (parameter->wasDeclaredWithTypename() ? "typename" : "class");
|
|
if (parameter->isTemplateParameterPack())
|
|
{
|
|
typeString += "...";
|
|
}
|
|
return typeString;
|
|
}
|
|
|
|
std::string CxxDeclNameResolver::getTemplateParameterTypeString(const clang::TemplateTemplateParmDecl* parameter)
|
|
{
|
|
std::string templateParameterTypeString = "template<";
|
|
clang::TemplateParameterList* parameterList = parameter->getTemplateParameters();
|
|
for (size_t i = 0; i < parameterList->size(); i++)
|
|
{
|
|
templateParameterTypeString += getTemplateParameterString(parameterList->getParam(i));
|
|
templateParameterTypeString += (i < parameterList->size() - 1) ? ", " : "";
|
|
}
|
|
templateParameterTypeString += ">";
|
|
templateParameterTypeString += " typename"; // TODO: what if template template parameter is defined with class keyword?
|
|
|
|
if (parameter->isTemplateParameterPack())
|
|
{
|
|
templateParameterTypeString += "...";
|
|
}
|
|
|
|
return templateParameterTypeString;
|
|
}
|
|
|
|
std::string CxxDeclNameResolver::getTemplateArgumentName(const clang::TemplateArgument& argument)
|
|
{
|
|
CxxTemplateArgumentNameResolver resolver(getCanonicalFilePathCache(), getIgnoredContextDecls());
|
|
return resolver.getTemplateArgumentName(argument);
|
|
}
|