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, 376 insertions, 0 deletions

diff --git a/compilerplugins/clang/changetoolsgen.cxx b/compilerplugins/clang/changetoolsgen.cxx
new file mode 100644
index 000000000..f4b9b6168
--- /dev/null
+++ b/compilerplugins/clang/changetoolsgen.cxx
@@ -0,0 +1,376 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * Based on LLVM/Clang.
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ */
+
+#include "plugin.hxx"
+#include "check.hxx"
+#include <regex>
+
+/**
+ * Changes calls to tools::Rectangle/Point/Size methods that return a ref to instead call the setter methods.
+ *
+ * run as:
+ *   make COMPILER_PLUGIN_TOOL=changetoolsgen UPDATE_FILES=all FORCE_COMPILE=all
+ * or
+ *   make <module> COMPILER_PLUGIN_TOOL=changetoolsgen FORCE_COMPILE=all
+ */
+
+namespace
+{
+class ChangeToolsGen : public loplugin::FilteringRewritePlugin<ChangeToolsGen>
+{
+public:
+    explicit ChangeToolsGen(loplugin::InstantiationData const& data)
+        : FilteringRewritePlugin(data)
+    {
+    }
+    virtual void run() override;
+    bool VisitCXXMemberCallExpr(CXXMemberCallExpr const* call);
+
+private:
+    bool ChangeAssignment(Stmt const* parent, std::string const& methodName,
+                          std::string const& setPrefix);
+    bool ChangeBinaryOperatorPlusMinus(BinaryOperator const* parent, CXXMemberCallExpr const* call,
+                                       std::string const& methodName);
+    bool ChangeBinaryOperatorOther(BinaryOperator const* parent, CXXMemberCallExpr const* call,
+                                   std::string const& methodName, std::string const& setPrefix);
+    bool ChangeUnaryOperator(UnaryOperator const* parent, CXXMemberCallExpr const* call,
+                             std::string const& methodName);
+    std::string extractCode(SourceLocation startLoc, SourceLocation endLoc);
+};
+
+void ChangeToolsGen::run() { TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
+
+bool ChangeToolsGen::VisitCXXMemberCallExpr(CXXMemberCallExpr const* call)
+{
+    if (ignoreLocation(call))
+        return true;
+    const CXXMethodDecl* func = call->getMethodDecl();
+    if (!func)
+        return true;
+    if (func->isConst())
+        return true;
+    auto dc = loplugin::DeclCheck(func);
+    std::string methodName;
+    std::string setPrefix;
+    if (dc.Function("Top").Class("Rectangle").Namespace("tools").GlobalNamespace())
+    {
+        methodName = "Top";
+        setPrefix = "Set";
+    }
+    else if (dc.Function("Bottom").Class("Rectangle").Namespace("tools").GlobalNamespace())
+    {
+        methodName = "Bottom";
+        setPrefix = "Set";
+    }
+    else if (dc.Function("Left").Class("Rectangle").Namespace("tools").GlobalNamespace())
+    {
+        methodName = "Left";
+        setPrefix = "Set";
+    }
+    else if (dc.Function("Right").Class("Rectangle").Namespace("tools").GlobalNamespace())
+    {
+        methodName = "Right";
+        setPrefix = "Set";
+    }
+    else if (dc.Function("X").Class("Point").GlobalNamespace())
+    {
+        methodName = "X";
+        setPrefix = "set";
+    }
+    else if (dc.Function("Y").Class("Point").GlobalNamespace())
+    {
+        methodName = "Y";
+        setPrefix = "set";
+    }
+    else if (dc.Function("Width").Class("Size").GlobalNamespace())
+    {
+        methodName = "Width";
+        setPrefix = "set";
+    }
+    else if (dc.Function("Height").Class("Size").GlobalNamespace())
+    {
+        methodName = "Height";
+        setPrefix = "set";
+    }
+    else
+        return true;
+    if (!loplugin::TypeCheck(func->getReturnType()).LvalueReference())
+        return true;
+
+    auto parent = getParentStmt(call);
+    if (!parent)
+        return true;
+    if (auto unaryOp = dyn_cast<UnaryOperator>(parent))
+    {
+        if (!ChangeUnaryOperator(unaryOp, call, methodName))
+            report(DiagnosticsEngine::Warning, "Could not fix, unary", call->getBeginLoc());
+        return true;
+    }
+    auto binaryOp = dyn_cast<BinaryOperator>(parent);
+    if (!binaryOp)
+    {
+        // normal getter
+        return true;
+    }
+    auto opcode = binaryOp->getOpcode();
+    if (opcode == BO_Assign)
+    {
+        // Check for assignments embedded inside other expressions
+        auto parent2 = getParentStmt(parent);
+        if (dyn_cast_or_null<ExprWithCleanups>(parent2))
+            parent2 = getParentStmt(parent2);
+        if (parent2 && isa<Expr>(parent2))
+        {
+            report(DiagnosticsEngine::Warning, "Could not fix, embedded assign",
+                   call->getBeginLoc());
+            return true;
+        }
+        // Check for
+        //   X.Width() = X.Height() = 1;
+        if (auto rhs = dyn_cast<BinaryOperator>(binaryOp->getRHS()->IgnoreParenImpCasts()))
+            if (rhs->getOpcode() == BO_Assign)
+            {
+                report(DiagnosticsEngine::Warning, "Could not fix, double assign",
+                       call->getBeginLoc());
+                return true;
+            }
+        if (!ChangeAssignment(parent, methodName, setPrefix))
+            report(DiagnosticsEngine::Warning, "Could not fix, assign", call->getBeginLoc());
+        return true;
+    }
+    if (opcode == BO_AddAssign || opcode == BO_SubAssign)
+    {
+        if (!ChangeBinaryOperatorPlusMinus(binaryOp, call, methodName))
+            report(DiagnosticsEngine::Warning, "Could not fix, assign-and-change",
+                   call->getBeginLoc());
+        return true;
+    }
+    else if (opcode == BO_RemAssign || opcode == BO_MulAssign || opcode == BO_DivAssign)
+    {
+        if (!ChangeBinaryOperatorOther(binaryOp, call, methodName, setPrefix))
+            report(DiagnosticsEngine::Warning, "Could not fix, assign-and-change",
+                   call->getBeginLoc());
+        return true;
+    }
+    else
+        assert(false);
+    return true;
+}
+
+bool ChangeToolsGen::ChangeAssignment(Stmt const* parent, std::string const& methodName,
+                                      std::string const& setPrefix)
+{
+    // Look for expressions like
+    //    aRect.Left() = ...;
+    // and replace with
+    //    aRect.SetLeft( ... );
+    SourceManager& SM = compiler.getSourceManager();
+    SourceLocation startLoc = SM.getExpansionLoc(parent->getBeginLoc());
+    SourceLocation endLoc = SM.getExpansionLoc(parent->getEndLoc());
+    const char* p1 = SM.getCharacterData(startLoc);
+    const char* p2 = SM.getCharacterData(endLoc);
+    unsigned n = Lexer::MeasureTokenLength(endLoc, SM, compiler.getLangOpts());
+    if (p2 < p1) // clang is misbehaving, appears to be macro constant related
+        return false;
+    std::string callText(p1, p2 - p1 + n);
+    auto originalLength = callText.size();
+
+    auto newText = std::regex_replace(callText, std::regex(methodName + " *\\( *\\) *="),
+                                      setPrefix + methodName + "(");
+    if (newText == callText)
+        return false;
+    newText += " )";
+
+    return replaceText(startLoc, originalLength, newText);
+}
+
+bool ChangeToolsGen::ChangeBinaryOperatorPlusMinus(BinaryOperator const* binaryOp,
+                                                   CXXMemberCallExpr const* call,
+                                                   std::string const& methodName)
+{
+    // Look for expressions like
+    //    aRect.Left() += ...;
+    // and replace with
+    //    aRect.MoveLeft( ... );
+    SourceManager& SM = compiler.getSourceManager();
+    SourceLocation startLoc = SM.getExpansionLoc(binaryOp->getBeginLoc());
+    SourceLocation endLoc = SM.getExpansionLoc(binaryOp->getEndLoc());
+    const char* p1 = SM.getCharacterData(startLoc);
+    const char* p2 = SM.getCharacterData(endLoc);
+    if (p2 < p1) // clang is misbehaving, appears to be macro constant related
+        return false;
+    unsigned n = Lexer::MeasureTokenLength(endLoc, SM, compiler.getLangOpts());
+    std::string callText(p1, p2 - p1 + n);
+    auto originalLength = callText.size();
+
+    std::string newText;
+    if (binaryOp->getOpcode() == BO_AddAssign)
+    {
+        newText = std::regex_replace(callText, std::regex(methodName + " *\\( *\\) *\\+= *"),
+                                     "Adjust" + methodName + "(");
+        newText += " )";
+    }
+    else
+    {
+        newText = std::regex_replace(callText, std::regex(methodName + " *\\( *\\) *\\-= *"),
+                                     "Adjust" + methodName + "( -(");
+        newText += ") )";
+    }
+
+    if (newText == callText)
+    {
+        report(DiagnosticsEngine::Warning, "binaryop-plusminus regex match failed",
+               call->getBeginLoc());
+        return false;
+    }
+
+    return replaceText(startLoc, originalLength, newText);
+}
+
+bool ChangeToolsGen::ChangeBinaryOperatorOther(BinaryOperator const* binaryOp,
+                                               CXXMemberCallExpr const* call,
+                                               std::string const& methodName,
+                                               std::string const& setPrefix)
+{
+    // Look for expressions like
+    //    aRect.Left() += ...;
+    // and replace with
+    //    aRect.SetLeft( aRect.GetLeft() + ... );
+    SourceManager& SM = compiler.getSourceManager();
+    SourceLocation startLoc = SM.getExpansionLoc(binaryOp->getBeginLoc());
+    SourceLocation endLoc = SM.getExpansionLoc(binaryOp->getEndLoc());
+    const char* p1 = SM.getCharacterData(startLoc);
+    const char* p2 = SM.getCharacterData(endLoc);
+    if (p2 < p1) // clang is misbehaving, appears to be macro constant related
+        return false;
+    unsigned n = Lexer::MeasureTokenLength(endLoc, SM, compiler.getLangOpts());
+    std::string callText(p1, p2 - p1 + n);
+    auto originalLength = callText.size();
+
+    std::string regexOpname;
+    std::string replaceOpname;
+    switch (binaryOp->getOpcode())
+    {
+        case BO_RemAssign:
+            regexOpname = "\\%=";
+            replaceOpname = "%";
+            break;
+        case BO_MulAssign:
+            regexOpname = "\\*=";
+            replaceOpname = "*";
+            break;
+        case BO_DivAssign:
+            regexOpname = "\\/=";
+            replaceOpname = "/";
+            break;
+        default:
+            assert(false);
+    }
+
+    auto implicitObjectText = extractCode(call->getImplicitObjectArgument()->getExprLoc(),
+                                          call->getImplicitObjectArgument()->getExprLoc());
+    std::string reString(methodName + " *\\( *\\) *" + regexOpname);
+    auto newText = std::regex_replace(callText, std::regex(reString),
+                                      setPrefix + methodName + "( " + implicitObjectText + "."
+                                          + methodName + "() " + replaceOpname + " (");
+    if (newText == callText)
+    {
+        report(DiagnosticsEngine::Warning, "binaryop-other regex match failed %0",
+               call->getBeginLoc())
+            << reString;
+        return false;
+    }
+    // sometimes we end up with duplicate spaces after the opname
+    newText
+        = std::regex_replace(newText, std::regex(methodName + "\\(\\) \\" + replaceOpname + "  "),
+                             methodName + "() " + replaceOpname + " ");
+    newText += ") )";
+
+    return replaceText(startLoc, originalLength, newText);
+}
+
+bool ChangeToolsGen::ChangeUnaryOperator(UnaryOperator const* unaryOp,
+                                         CXXMemberCallExpr const* call,
+                                         std::string const& methodName)
+{
+    // Look for expressions like
+    //    aRect.Left()++;
+    //    ++aRect.Left();
+    // and replace with
+    //    aRect.MoveLeft( 1 );
+
+    SourceManager& SM = compiler.getSourceManager();
+    SourceLocation startLoc = SM.getExpansionLoc(unaryOp->getBeginLoc());
+    SourceLocation endLoc = SM.getExpansionLoc(unaryOp->getEndLoc());
+    const char* p1 = SM.getCharacterData(startLoc);
+    const char* p2 = SM.getCharacterData(endLoc);
+    if (p2 < p1) // clang is misbehaving, appears to be macro constant related
+        return false;
+    unsigned n = Lexer::MeasureTokenLength(endLoc, SM, compiler.getLangOpts());
+    std::string callText(p1, p2 - p1 + n);
+    auto originalLength = callText.size();
+
+    auto implicitObjectText = extractCode(call->getImplicitObjectArgument()->getExprLoc(),
+                                          call->getImplicitObjectArgument()->getExprLoc());
+    auto op = unaryOp->getOpcode();
+    std::string regexOpname;
+    std::string replaceOp;
+    switch (op)
+    {
+        case UO_PostInc:
+        case UO_PreInc:
+            replaceOp = "1";
+            regexOpname = "\\+\\+";
+            break;
+        case UO_PostDec:
+        case UO_PreDec:
+            replaceOp = "-1";
+            regexOpname = "\\-\\-";
+            break;
+        default:
+            assert(false);
+    }
+    std::string newText;
+    std::string reString;
+    if (op == UO_PostInc || op == UO_PostDec)
+    {
+        reString = methodName + " *\\( *\\) *" + regexOpname;
+        newText = std::regex_replace(callText, std::regex(reString),
+                                     "Adjust" + methodName + "( " + replaceOp);
+    }
+    else
+    {
+        newText = implicitObjectText + "." + "Adjust" + methodName + "( " + replaceOp;
+    }
+    if (newText == callText)
+    {
+        report(DiagnosticsEngine::Warning, "unaryop regex match failed %0", call->getBeginLoc())
+            << reString;
+        return false;
+    }
+    newText += " )";
+    return replaceText(startLoc, originalLength, newText);
+}
+
+std::string ChangeToolsGen::extractCode(SourceLocation startLoc, SourceLocation endLoc)
+{
+    SourceManager& SM = compiler.getSourceManager();
+    const char* p1 = SM.getCharacterData(SM.getExpansionLoc(startLoc));
+    const char* p2 = SM.getCharacterData(SM.getExpansionLoc(endLoc));
+    unsigned n = Lexer::MeasureTokenLength(endLoc, SM, compiler.getLangOpts());
+    return std::string(p1, p2 - p1 + n);
+}
+
+static loplugin::Plugin::Registration<ChangeToolsGen> X("changetoolsgen", false);
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */