Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/compilerplugins/clang/countusersofdefaultparams.cxx b/compilerplugins/clang/countusersofdefaultparams.cxx
new file mode 100644
index 000000000..c336509b3
--- /dev/null
+++ b/compilerplugins/clang/countusersofdefaultparams.cxx
@@ -0,0 +1,250 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <string>
+#include <set>
+#include <iostream>
+#include <fstream>
+
+#include "clang/AST/Attr.h"
+
+#include "config_clang.h"
+
+#include "plugin.hxx"
+
+/*
+  Count call sites that are actually using the defaulted values on params on methods that declare such.
+
+  The process goes something like this:
+    $ make check
+    $ make FORCE_COMPILE=all COMPILER_PLUGIN_TOOL='countusersofdefaultparams' check
+    $ ./compilerplugins/clang/countusersofdefaultparams.py
+*/
+
+namespace {
+
+struct MyFuncInfo
+{
+    std::string access;
+    std::string returnType;
+    std::string nameAndParams;
+    std::string sourceLocation;
+};
+bool operator < (const MyFuncInfo &lhs, const MyFuncInfo &rhs)
+{
+    return std::tie(lhs.returnType, lhs.nameAndParams)
+         < std::tie(rhs.returnType, rhs.nameAndParams);
+}
+struct MyCallInfo : public MyFuncInfo
+{
+    std::string sourceLocationOfCall;
+};
+bool operator < (const MyCallInfo &lhs, const MyCallInfo &rhs)
+{
+    return std::tie(lhs.returnType, lhs.nameAndParams, lhs.sourceLocationOfCall)
+         < std::tie(rhs.returnType, rhs.nameAndParams, rhs.sourceLocationOfCall);
+}
+
+
+// try to limit the voluminous output a little
+static std::set<MyCallInfo> callSet;
+static std::set<MyFuncInfo> definitionSet;
+
+class CountUsersOfDefaultParams:
+    public RecursiveASTVisitor<CountUsersOfDefaultParams>, public loplugin::Plugin
+{
+public:
+    explicit CountUsersOfDefaultParams(loplugin::InstantiationData const & data): Plugin(data) {}
+
+    virtual void run() override
+    {
+        TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+
+        // dump all our output in one write call - this is to try and limit IO "crosstalk" between multiple processes
+        // writing to the same logfile
+
+        std::string output;
+        for (const MyFuncInfo & s : definitionSet)
+            output += "defn:\t" + s.access + "\t" + s.returnType + "\t" + s.nameAndParams + "\t" + s.sourceLocation + "\n";
+        for (const MyCallInfo & s : callSet)
+            output += "call:\t" + s.returnType + "\t" + s.nameAndParams + "\t" + s.sourceLocationOfCall + "\n";
+        std::ofstream myfile;
+        myfile.open( WORKDIR "/loplugin.countusersofdefaultparams.log", std::ios::app | std::ios::out);
+        myfile << output;
+        myfile.close();
+    }
+
+    bool shouldVisitTemplateInstantiations () const { return true; }
+
+    bool VisitCallExpr( const CallExpr * );
+    bool VisitFunctionDecl( const FunctionDecl* );
+    bool VisitCXXConstructExpr( const CXXConstructExpr * );
+private:
+    void niceName(const FunctionDecl* functionDecl, MyFuncInfo&);
+    std::string locationToString(const SourceLocation&);
+};
+
+void CountUsersOfDefaultParams::niceName(const FunctionDecl* functionDecl, MyFuncInfo& aInfo)
+{
+    if (functionDecl->getInstantiatedFromMemberFunction())
+        functionDecl = functionDecl->getInstantiatedFromMemberFunction();
+    else if (functionDecl->getTemplateInstantiationPattern())
+        functionDecl = functionDecl->getTemplateInstantiationPattern();
+
+    switch (functionDecl->getAccess())
+    {
+    case AS_public: aInfo.access = "public"; break;
+    case AS_private: aInfo.access = "private"; break;
+    case AS_protected: aInfo.access = "protected"; break;
+    default: aInfo.access = "unknown"; break;
+    }
+    aInfo.returnType = functionDecl->getReturnType().getCanonicalType().getAsString();
+
+    if (isa<CXXMethodDecl>(functionDecl)) {
+        const CXXRecordDecl* recordDecl = dyn_cast<CXXMethodDecl>(functionDecl)->getParent();
+        aInfo.nameAndParams += recordDecl->getQualifiedNameAsString();
+        aInfo.nameAndParams += "::";
+    }
+    aInfo.nameAndParams += functionDecl->getNameAsString() + "(";
+    bool bFirst = true;
+    for (const ParmVarDecl *pParmVarDecl : functionDecl->parameters()) {
+        if (bFirst)
+            bFirst = false;
+        else
+            aInfo.nameAndParams += ",";
+        aInfo.nameAndParams += pParmVarDecl->getType().getCanonicalType().getAsString();
+    }
+    aInfo.nameAndParams += ")";
+    if (isa<CXXMethodDecl>(functionDecl) && dyn_cast<CXXMethodDecl>(functionDecl)->isConst()) {
+        aInfo.nameAndParams += " const";
+    }
+
+    aInfo.sourceLocation = locationToString(functionDecl->getLocation());
+    loplugin::normalizeDotDotInFilePath(aInfo.sourceLocation);
+}
+
+bool CountUsersOfDefaultParams::VisitCallExpr(const CallExpr * callExpr) {
+    if (ignoreLocation(callExpr)) {
+        return true;
+    }
+    const FunctionDecl* functionDecl;
+    if (isa<CXXMemberCallExpr>(callExpr)) {
+        functionDecl = dyn_cast<CXXMemberCallExpr>(callExpr)->getMethodDecl();
+    }
+    else {
+        functionDecl = callExpr->getDirectCallee();
+    }
+    if (functionDecl == nullptr) {
+        return true;
+    }
+    functionDecl = functionDecl->getCanonicalDecl();
+    // work our way up to the root method
+    while (isa<CXXMethodDecl>(functionDecl)) {
+        const CXXMethodDecl* methodDecl = dyn_cast<CXXMethodDecl>(functionDecl);
+        if (methodDecl->size_overridden_methods()==0)
+            break;
+        functionDecl = *methodDecl->begin_overridden_methods();
+    }
+    // work our way back to the root definition for template methods
+    if (functionDecl->getInstantiatedFromMemberFunction())
+        functionDecl = functionDecl->getInstantiatedFromMemberFunction();
+    else if (functionDecl->getTemplateInstantiationPattern())
+        functionDecl = functionDecl->getTemplateInstantiationPattern();
+    int n = functionDecl->getNumParams() - 1;
+    if (n < 0 || !functionDecl->getParamDecl(n)->hasDefaultArg()) {
+        return true;
+    }
+    while (n > 0 && functionDecl->getParamDecl(n-1)->hasDefaultArg()) {
+        --n;
+    }
+    // look for callsites that are actually using the defaulted values
+    if ( n < (int)callExpr->getNumArgs() && callExpr->getArg(n)->isDefaultArgument()) {
+        MyCallInfo callInfo;
+        niceName(functionDecl, callInfo);
+        callInfo.sourceLocationOfCall = locationToString(callExpr->getBeginLoc());
+        callSet.insert(callInfo);
+    }
+    return true;
+}
+
+bool CountUsersOfDefaultParams::VisitCXXConstructExpr(const CXXConstructExpr * constructExpr) {
+    if (ignoreLocation(constructExpr)) {
+        return true;
+    }
+    const CXXConstructorDecl* constructorDecl = constructExpr->getConstructor()->getCanonicalDecl();
+    // work our way back to the root definition for template methods
+    if (constructorDecl->getInstantiatedFromMemberFunction())
+        constructorDecl = dyn_cast<CXXConstructorDecl>(constructorDecl->getInstantiatedFromMemberFunction());
+    else if (constructorDecl->getTemplateInstantiationPattern())
+        constructorDecl = dyn_cast<CXXConstructorDecl>(constructorDecl->getTemplateInstantiationPattern());
+    int n = constructorDecl->getNumParams() - 1;
+    if (n < 0 || !constructorDecl->getParamDecl(n)->hasDefaultArg()) {
+        return true;
+    }
+    while (n > 0 && constructorDecl->getParamDecl(n-1)->hasDefaultArg()) {
+        --n;
+    }
+    // look for callsites that are actually using the defaulted values
+    if ( n < (int)constructExpr->getNumArgs() && constructExpr->getArg(n)->isDefaultArgument()) {
+        MyCallInfo callInfo;
+        niceName(constructorDecl, callInfo);
+        callInfo.sourceLocationOfCall = locationToString(constructExpr->getBeginLoc());
+        callSet.insert(callInfo);
+    }
+    return true;
+}
+
+std::string CountUsersOfDefaultParams::locationToString(const SourceLocation& sourceLoc)
+{
+    SourceLocation expansionLoc = compiler.getSourceManager().getExpansionLoc( sourceLoc );
+    StringRef name = getFilenameOfLocation(expansionLoc);
+    return std::string(name.substr(strlen(SRCDIR)+1)) + ":" + std::to_string(compiler.getSourceManager().getSpellingLineNumber(expansionLoc));
+}
+
+bool CountUsersOfDefaultParams::VisitFunctionDecl( const FunctionDecl* functionDecl )
+{
+    functionDecl = functionDecl->getCanonicalDecl();
+    if( !functionDecl || !functionDecl->getLocation().isValid() || ignoreLocation( functionDecl )) {
+        return true;
+    }
+    const CXXMethodDecl* methodDecl = dyn_cast_or_null<CXXMethodDecl>(functionDecl);
+
+    // ignore method overrides, since the call will show up as being directed to the root method
+    if (methodDecl && (methodDecl->size_overridden_methods() != 0 || methodDecl->hasAttr<OverrideAttr>())) {
+        return true;
+    }
+    // ignore stuff that forms part of the stable URE interface
+    if (isInUnoIncludeFile(functionDecl)) {
+        return true;
+    }
+    if (isa<CXXDestructorDecl>(functionDecl)) {
+        return true;
+    }
+    if (functionDecl->isDeleted()) {
+        return true;
+    }
+    auto n = functionDecl->getNumParams();
+    if (n == 0 || !functionDecl->getParamDecl(n - 1)->hasDefaultArg()) {
+        return true;
+    }
+
+    if( functionDecl->getLocation().isValid() )
+    {
+        MyFuncInfo funcInfo;
+        niceName(functionDecl, funcInfo);
+        definitionSet.insert(funcInfo);
+    }
+    return true;
+}
+
+loplugin::Plugin::Registration< CountUsersOfDefaultParams > X("countusersofdefaultparams", false);
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */