Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 313 insertions, 0 deletions

diff --git a/compilerplugins/clang/getimplementationname.cxx b/compilerplugins/clang/getimplementationname.cxx
new file mode 100644
index 000000000..acc45acb7
--- /dev/null
+++ b/compilerplugins/clang/getimplementationname.cxx
@@ -0,0 +1,313 @@
+/* -*- 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/.
+ */
+
+// only compile this on unixy system
+// as we don't want to bother with x-platform system()/mkdir()
+#if defined(__unix__)
+// only compile this on clang 3.7 or higher, which is known to work
+// there were problems on clang 3.5 at least
+#include "config_clang.h"
+#include <cassert>
+#include <stdlib.h>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <regex>
+#include "check.hxx"
+#include "plugin.hxx"
+#include "clang/Frontend/CompilerInstance.h"
+
+namespace {
+
+clang::Expr const * ignoreParenImplicitComma(clang::Expr const * expr) {
+    for (;;) {
+        auto const e1 = expr->IgnoreParens()->IgnoreImplicit();
+        if (e1 != expr) {
+            expr = e1;
+            continue;
+        }
+        // auto const e1 = dyn_cast<clang::ExprWithCleanups>(expr);
+        // if (e1 != nullptr) {
+        //     expr = e1->getSubExpr();
+        //     continue;
+        // }
+        auto const e2 = dyn_cast<clang::BinaryOperator>(expr);
+        if (e2 != nullptr && e2->getOpcode() == clang::BO_Comma) {
+            expr = e2->getRHS();
+            continue;
+        }
+        return expr;
+    }
+}
+
+bool overridesXServiceInfo(clang::CXXMethodDecl const * decl) {
+    for (auto i = decl->begin_overridden_methods();
+         i != decl->end_overridden_methods(); ++i)
+    {
+        if (((*i)->getParent()->getQualifiedNameAsString()
+             == "com::sun::star::lang::XServiceInfo")
+            || overridesXServiceInfo(*i))
+        {
+            return true;
+        }
+    }
+    return false;
+}
+
+std::string replace_all(std::string subject, const std::string& search, const std::string& replace)
+{
+    size_t pos = 0;
+
+    while ((pos = subject.find(search, pos)) != std::string::npos)
+    {
+        subject.replace(pos, search.length(), replace);
+        pos += replace.length();
+    }
+
+    return subject;
+}
+
+class GetImplementationName:
+    public loplugin::FilteringPlugin<GetImplementationName>
+{
+public:
+    explicit GetImplementationName(loplugin::InstantiationData const & data)
+        : FilteringPlugin(data)
+        , m_Outdir(initOutdir())
+        , m_OutdirCreated(false)
+        , m_Srcdir(initSrcdir())
+    {}
+    void run() override;
+
+    bool VisitCXXMethodDecl(clang::CXXMethodDecl const * decl);
+
+private:
+    bool isStringConstant(Expr const * expr, clang::StringRef * string);
+
+    bool returnsStringConstant(
+        FunctionDecl const * decl, clang::StringRef * string);
+
+    void ensureOutdirCreated()
+    {
+        if(m_OutdirCreated)
+            return;
+        std::string cmd("mkdir -p ");
+        cmd += "\"" + m_Outdir + "\"";
+        if(system(cmd.c_str()) != 0) {
+            report(
+                clang::DiagnosticsEngine::Error,
+                "Error creating ServiceImplementations output dir \"%0\".")
+                << m_Outdir;
+        }
+        m_OutdirCreated = true;
+    }
+
+    void generateOutput(FunctionDecl const * decl, const std::string unoimpl, const std::string cppclass);
+    std::string initOutdir();
+    std::string initSrcdir();
+    const std::string m_Outdir;
+    bool m_OutdirCreated;
+    const std::string m_Srcdir;
+};
+
+void GetImplementationName::run() {
+    if (compiler.getLangOpts().CPlusPlus) {
+        TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+    }
+}
+
+bool GetImplementationName::VisitCXXMethodDecl(
+    clang::CXXMethodDecl const * decl)
+{
+    if (ignoreLocation(decl) || !decl->doesThisDeclarationHaveABody()
+        || !decl->isVirtual())
+    {
+        return true;
+    }
+    auto const id = decl->getIdentifier();
+    if (id == nullptr || id->getName() != "getImplementationName"
+        || !overridesXServiceInfo(decl))
+    {
+        return true;
+    }
+    clang::StringRef unoimpl;
+    if (!returnsStringConstant(decl, &unoimpl)) {
+        report(
+            clang::DiagnosticsEngine::Warning,
+            "cannot determine returned string", decl->getLocation())
+            << decl->getSourceRange();
+        return true;
+    }
+    generateOutput(decl, unoimpl.str(), decl->getParent()->getQualifiedNameAsString());
+    return true;
+}
+
+bool GetImplementationName::isStringConstant(
+    Expr const * expr, clang::StringRef * string)
+{
+    QualType t = expr->getType();
+    if (!(t->isConstantArrayType() && t.isConstQualified()
+          && (loplugin::TypeCheck(t->getAsArrayTypeUnsafe()->getElementType())
+              .Char())))
+    {
+        return false;
+    }
+    DeclRefExpr const * dre = dyn_cast<DeclRefExpr>(expr);
+    if (dre != nullptr) {
+        VarDecl const * var = dyn_cast<VarDecl>(dre->getDecl());
+        if (var != nullptr) {
+            Expr const * init = var->getAnyInitializer();
+            if (init != nullptr) {
+                expr = ignoreParenImplicitComma(init);
+            }
+        }
+    }
+    clang::StringLiteral const * lit = dyn_cast<clang::StringLiteral>(expr);
+    if (lit != nullptr) {
+        if (!lit->isAscii()) {
+            return false;
+        }
+        *string = lit->getString();
+        return true;
+    }
+    APValue v;
+    if (!expr->isCXX11ConstantExpr(compiler.getASTContext(), &v)) {
+        return false;
+    }
+    switch (v.getKind()) {
+    case APValue::LValue:
+        return false; //TODO
+    case APValue::Array:
+        {
+            if (v.hasArrayFiller()) { //TODO: handle final NUL filler?
+                return false;
+            }
+            unsigned n = v.getArraySize();
+            assert(n != 0);
+            for (unsigned i = 0; i != n; ++i) {
+                APValue e(v.getArrayInitializedElt(i));
+                if (!e.isInt()) { //TODO: assert?
+                    return false;
+                }
+                APSInt iv = e.getInt();
+                if (iv == 0) {
+                    if (i == n -1) {
+                        continue;
+                    }
+                    return false;
+                } else if (iv.uge(0x80)) {
+                    return false;
+                }
+                //TODO
+            }
+            return false;//TODO
+        }
+    default:
+        abort(); //TODO???
+    }
+}
+
+bool GetImplementationName::returnsStringConstant(
+    FunctionDecl const * decl, clang::StringRef * string)
+{
+    auto s1 = decl->getBody();
+    if (s1 == nullptr) {
+        return false;
+    }
+    for (;;) {
+        auto s2 = dyn_cast<clang::CompoundStmt>(s1);
+        if (s2 == nullptr) {
+            auto const s3 = dyn_cast<clang::CXXTryStmt>(s1);
+            if (s3 == nullptr) {
+                break;
+            }
+            s2 = s3->getTryBlock();
+        }
+        if (s2->size() != 1) {
+            break;
+        }
+        s1 = s2->body_front();
+    }
+    auto const s4 = dyn_cast<clang::ReturnStmt>(s1);
+    if (s4 == nullptr) {
+        return false;
+    }
+    for (auto e1 = ignoreParenImplicitComma(s4->getRetValue());;) {
+        auto const e2 = dyn_cast<clang::CallExpr>(e1);
+        if (e2 != nullptr) {
+            auto const d = e2->getDirectCallee();
+            return d != nullptr && returnsStringConstant(d, string);
+        }
+        auto const e3 = dyn_cast<clang::CXXFunctionalCastExpr>(e1);
+        if (e3 != nullptr) {
+            e1 = ignoreParenImplicitComma(e3->getSubExpr());
+            continue;
+        }
+        auto const e4 = dyn_cast<clang::CXXConstructExpr>(e1);
+        if (e4 != nullptr)  {
+            if (e4->getNumArgs() < 1) {
+                return false;
+            }
+            e1 = ignoreParenImplicitComma(e4->getArg(0));
+            continue;
+        }
+        return isStringConstant(e1, string);
+    }
+}
+
+void GetImplementationName::generateOutput(FunctionDecl const * decl, const std::string unoimpl, const std::string cppclass) {
+    ensureOutdirCreated();
+    clang::SourceManager& sm(compiler.getSourceManager());
+    const std::string absfilename(sm.getFilename(decl->getSourceRange().getBegin()).str());
+    if(absfilename.length() <= m_Srcdir.length())
+        return;
+    const std::string filename(absfilename.substr(m_Srcdir.length()+1));
+    const std::regex moduleregex("^\\w+");
+    std::smatch modulematch;
+    std::regex_search(filename, modulematch, moduleregex);
+    if(modulematch.empty())
+        return;
+    const std::string module(modulematch[0]);
+    const std::string doublecolonregex("::");
+    const std::string cppclassweb(replace_all(cppclass, doublecolonregex, "_1_1"));
+    std::ofstream redirectfile(m_Outdir + "/" + unoimpl + ".html");
+    redirectfile << "<meta http-equiv=\"refresh\" content=\"0; URL=http://docs.libreoffice.org/" << module << "/html/class" << cppclassweb << "\">\n";
+    redirectfile.close();
+}
+
+std::string GetImplementationName::initOutdir() {
+{
+    char* pWorkdir = getenv("WORKDIR");
+    if(pWorkdir) {
+        std::string result(pWorkdir);
+        result += "/ServiceImplementations";
+        return result;
+    }
+    report(
+        clang::DiagnosticsEngine::Error, "WORKDIR unset, don't know where to write service implementation info.");
+    return std::string();
+    }
+}
+
+std::string GetImplementationName::initSrcdir() {
+{
+    char* pSrcdir = getenv("SRCDIR");
+    if(!pSrcdir) {
+        report(
+            clang::DiagnosticsEngine::Error, "SRCDIR unset, don't know where the source base is.");
+    }
+    return std::string(pSrcdir);
+    }
+}
+loplugin::Plugin::Registration<GetImplementationName> X(
+    "getimplementationname", false);
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */