data: Parsing type usages within function and method bodies

This change parses type usages in function and method bodies and saves them with an edge of type EDGE_TYPE_USAGE. This
also includes base class types used in initialization lists of derived class constructors.

src/lib/data/parser/ParserClient.h

@@ -79,6 +79,7 @@ public:
 		const ParseLocation& location, const ParseFunction& user, const std::string& usedName) = 0;
 	virtual void onGlobalVariableUsageParsed(
 		const ParseLocation& location, const ParseFunction& user, const std::string& usedName) = 0;
+	virtual void onTypeUsageParsed(const ParseTypeUsage& type, const ParseFunction& function) = 0;
 };
 
 #endif // PARSER_CLIENT_H

src/lib/data/parser/cxx/ASTBodyVisitor.cpp

@@ -66,7 +66,7 @@ void ASTBodyVisitor::VisitMemberExpr(clang::make_ptr<clang::MemberExpr>::type ex
 {
 	if (expr->getMemberDecl()->getKind() == clang::Decl::Kind::Field)
 	{
-		m_client->VisitFieldUsageExprInDeclBody(m_functionDecl, expr);
+		m_client->VisitMemberExprInDeclBody(m_functionDecl, expr);
 	}
 	VisitStmt(expr);
 }
@@ -75,7 +75,19 @@ void ASTBodyVisitor::VisitDeclRefExpr(clang::make_ptr<clang::DeclRefExpr>::type
 {
 	if (expr->getDecl()->getKind() == clang::Decl::Var && expr->getDecl()->isDefinedOutsideFunctionOrMethod())
 	{
-		m_client->VisitGlobalVariableUsageExprInDeclBody(m_functionDecl, expr);
+		m_client->VisitDeclRefExprInDeclBody(m_functionDecl, expr);
 	}
 	VisitStmt(expr);
 }
+
+void ASTBodyVisitor::VisitDeclStmt(clang::DeclStmt* stmt)
+{
+	for (clang::Decl* decl : stmt->decls())
+	{
+		if (clang::isa<clang::VarDecl>(decl))
+		{
+			m_client->VisitVarDeclInDeclBody(m_functionDecl, clang::dyn_cast<clang::VarDecl>(decl));
+		}
+	}
+	VisitStmt(stmt);
+}

src/lib/data/parser/cxx/ASTBodyVisitor.h

@@ -17,6 +17,7 @@ public:
 	void VisitCXXConstructExpr(clang::CXXConstructExpr* expr);
 	void VisitMemberExpr(clang::make_ptr<clang::MemberExpr>::type expr);
 	void VisitDeclRefExpr(clang::make_ptr<clang::DeclRefExpr>::type expr);
+	void VisitDeclStmt(clang::DeclStmt* stmt);
 
 private:
 	ASTBodyVisitorClient* m_client;

src/lib/data/parser/cxx/ASTBodyVisitorClient.h

@@ -15,8 +15,9 @@ public:
 	virtual void VisitCallExprInDeclBody(clang::VarDecl* decl, clang::CallExpr* expr) = 0;
 	virtual void VisitCXXConstructExprInDeclBody(clang::FunctionDecl* decl, clang::CXXConstructExpr* expr) = 0;
 	virtual void VisitCXXConstructExprInDeclBody(clang::VarDecl* decl, clang::CXXConstructExpr* expr) = 0;
-	virtual void VisitFieldUsageExprInDeclBody(clang::FunctionDecl* decl, clang::MemberExpr* expr) = 0;
-	virtual void VisitGlobalVariableUsageExprInDeclBody(clang::FunctionDecl* decl, clang::DeclRefExpr* expr) = 0;
+	virtual void VisitMemberExprInDeclBody(clang::FunctionDecl* decl, clang::MemberExpr* expr) = 0;
+	virtual void VisitDeclRefExprInDeclBody(clang::FunctionDecl* decl, clang::DeclRefExpr* expr) = 0;
+	virtual void VisitVarDeclInDeclBody(clang::FunctionDecl* decl, clang::VarDecl* varDecl) = 0;
 };
 
 #endif // AST_BODY_VISITOR_CLIENT_H

src/lib/data/parser/cxx/ASTVisitor.cpp

@@ -206,6 +206,13 @@ bool ASTVisitor::VisitCXXConstructorDecl(clang::CXXConstructorDecl* declaration)
 						init->getMember()->getQualifiedNameAsString()
 					);
 				}
+				else if (init->isBaseInitializer())
+				{
+					m_client->onTypeUsageParsed(
+						getParseTypeUsage(init->getTypeSourceInfo()->getTypeLoc(), init->getTypeSourceInfo()->getType()),
+						getParseFunction(declaration)
+					);
+				}
 
 				ASTBodyVisitor bodyVisitor(this, declaration);
 				bodyVisitor.Visit(init->getInit());
@@ -308,7 +315,7 @@ void ASTVisitor::VisitCXXConstructExprInDeclBody(clang::VarDecl* decl, clang::CX
 	);
 }
 
-void ASTVisitor::VisitFieldUsageExprInDeclBody(clang::FunctionDecl* decl, clang::MemberExpr* expr)
+void ASTVisitor::VisitMemberExprInDeclBody(clang::FunctionDecl* decl, clang::MemberExpr* expr)
 {
 	ParseLocation parseLocation = getParseLocation(expr->getSourceRange());
 
@@ -322,7 +329,7 @@ void ASTVisitor::VisitFieldUsageExprInDeclBody(clang::FunctionDecl* decl, clang:
 	);
 }
 
-void ASTVisitor::VisitGlobalVariableUsageExprInDeclBody(clang::FunctionDecl* decl, clang::DeclRefExpr* expr)
+void ASTVisitor::VisitDeclRefExprInDeclBody(clang::FunctionDecl* decl, clang::DeclRefExpr* expr)
 {
 	ParseLocation parseLocation = getParseLocation(expr->getSourceRange());
 
@@ -336,6 +343,14 @@ void ASTVisitor::VisitGlobalVariableUsageExprInDeclBody(clang::FunctionDecl* dec
 	);
 }
 
+void ASTVisitor::VisitVarDeclInDeclBody(clang::FunctionDecl* decl, clang::VarDecl* varDecl)
+{
+	m_client->onTypeUsageParsed(
+		getParseTypeUsage(varDecl->getTypeSourceInfo()->getTypeLoc(), varDecl->getType()),
+		getParseFunction(decl)
+	);
+}
+
 bool ASTVisitor::hasValidLocation(const clang::Decl* declaration) const
 {
 	const clang::SourceLocation& location = declaration->getLocStart();

src/lib/data/parser/cxx/ASTVisitor.h

@@ -43,8 +43,9 @@ public:
 	virtual void VisitCallExprInDeclBody(clang::VarDecl* decl, clang::CallExpr* expr); // calls in initialization of global variables
 	virtual void VisitCXXConstructExprInDeclBody(clang::FunctionDecl* decl, clang::CXXConstructExpr* expr); // constructor calls
 	virtual void VisitCXXConstructExprInDeclBody(clang::VarDecl* decl, clang::CXXConstructExpr* expr); // constructor calls of global variables
-	virtual void VisitFieldUsageExprInDeclBody(clang::FunctionDecl* decl, clang::MemberExpr* expr); // field usages
-	virtual void VisitGlobalVariableUsageExprInDeclBody(clang::FunctionDecl* decl, clang::DeclRefExpr* expr); // global variable usage
+	virtual void VisitMemberExprInDeclBody(clang::FunctionDecl* decl, clang::MemberExpr* expr); // field usages
+	virtual void VisitDeclRefExprInDeclBody(clang::FunctionDecl* decl, clang::DeclRefExpr* expr); // global variable usage
+	virtual void VisitVarDeclInDeclBody(clang::FunctionDecl* decl, clang::VarDecl* varDecl); // type usages
 
 private:
 	bool hasValidLocation(const clang::Decl* declaration) const;