635 lines
20 KiB
C++
635 lines
20 KiB
C++
//===--- HTMLDiagnostics.cpp - HTML Diagnostics for Paths ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the HTMLDiagnostics object.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Lex/Lexer.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Rewrite/Core/HTMLRewrite.h"
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#include "clang/Rewrite/Core/Rewriter.h"
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#include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h"
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#include "clang/StaticAnalyzer/Core/CheckerManager.h"
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#include "clang/StaticAnalyzer/Core/IssueHash.h"
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#include "clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h"
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#include <sstream>
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using namespace clang;
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using namespace ento;
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//===----------------------------------------------------------------------===//
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// Boilerplate.
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//===----------------------------------------------------------------------===//
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namespace {
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class HTMLDiagnostics : public PathDiagnosticConsumer {
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std::string Directory;
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bool createdDir, noDir;
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const Preprocessor &PP;
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AnalyzerOptions &AnalyzerOpts;
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public:
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HTMLDiagnostics(AnalyzerOptions &AnalyzerOpts, const std::string& prefix, const Preprocessor &pp);
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~HTMLDiagnostics() override { FlushDiagnostics(nullptr); }
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void FlushDiagnosticsImpl(std::vector<const PathDiagnostic *> &Diags,
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FilesMade *filesMade) override;
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StringRef getName() const override {
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return "HTMLDiagnostics";
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}
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unsigned ProcessMacroPiece(raw_ostream &os,
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const PathDiagnosticMacroPiece& P,
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unsigned num);
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void HandlePiece(Rewriter& R, FileID BugFileID,
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const PathDiagnosticPiece& P, unsigned num, unsigned max);
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void HighlightRange(Rewriter& R, FileID BugFileID, SourceRange Range,
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const char *HighlightStart = "<span class=\"mrange\">",
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const char *HighlightEnd = "</span>");
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void ReportDiag(const PathDiagnostic& D,
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FilesMade *filesMade);
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};
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} // end anonymous namespace
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HTMLDiagnostics::HTMLDiagnostics(AnalyzerOptions &AnalyzerOpts,
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const std::string& prefix,
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const Preprocessor &pp)
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: Directory(prefix), createdDir(false), noDir(false), PP(pp), AnalyzerOpts(AnalyzerOpts) {
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}
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void ento::createHTMLDiagnosticConsumer(AnalyzerOptions &AnalyzerOpts,
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PathDiagnosticConsumers &C,
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const std::string& prefix,
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const Preprocessor &PP) {
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C.push_back(new HTMLDiagnostics(AnalyzerOpts, prefix, PP));
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}
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//===----------------------------------------------------------------------===//
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// Report processing.
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//===----------------------------------------------------------------------===//
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void HTMLDiagnostics::FlushDiagnosticsImpl(
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std::vector<const PathDiagnostic *> &Diags,
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FilesMade *filesMade) {
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for (std::vector<const PathDiagnostic *>::iterator it = Diags.begin(),
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et = Diags.end(); it != et; ++it) {
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ReportDiag(**it, filesMade);
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}
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}
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void HTMLDiagnostics::ReportDiag(const PathDiagnostic& D,
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FilesMade *filesMade) {
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// Create the HTML directory if it is missing.
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if (!createdDir) {
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createdDir = true;
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if (std::error_code ec = llvm::sys::fs::create_directories(Directory)) {
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llvm::errs() << "warning: could not create directory '"
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<< Directory << "': " << ec.message() << '\n';
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noDir = true;
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return;
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}
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}
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if (noDir)
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return;
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// First flatten out the entire path to make it easier to use.
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PathPieces path = D.path.flatten(/*ShouldFlattenMacros=*/false);
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// The path as already been prechecked that all parts of the path are
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// from the same file and that it is non-empty.
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const SourceManager &SMgr = (*path.begin())->getLocation().getManager();
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assert(!path.empty());
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FileID FID =
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(*path.begin())->getLocation().asLocation().getExpansionLoc().getFileID();
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assert(FID.isValid());
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// Create a new rewriter to generate HTML.
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Rewriter R(const_cast<SourceManager&>(SMgr), PP.getLangOpts());
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// Get the function/method name
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SmallString<128> declName("unknown");
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int offsetDecl = 0;
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if (const Decl *DeclWithIssue = D.getDeclWithIssue()) {
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if (const NamedDecl *ND = dyn_cast<NamedDecl>(DeclWithIssue)) {
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declName = ND->getDeclName().getAsString();
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}
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if (const Stmt *Body = DeclWithIssue->getBody()) {
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// Retrieve the relative position of the declaration which will be used
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// for the file name
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FullSourceLoc L(
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SMgr.getExpansionLoc((*path.rbegin())->getLocation().asLocation()),
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SMgr);
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FullSourceLoc FunL(SMgr.getExpansionLoc(Body->getLocStart()), SMgr);
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offsetDecl = L.getExpansionLineNumber() - FunL.getExpansionLineNumber();
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}
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}
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// Process the path.
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unsigned n = path.size();
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unsigned max = n;
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for (PathPieces::const_reverse_iterator I = path.rbegin(),
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E = path.rend();
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I != E; ++I, --n)
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HandlePiece(R, FID, **I, n, max);
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// Add line numbers, header, footer, etc.
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// unsigned FID = R.getSourceMgr().getMainFileID();
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html::EscapeText(R, FID);
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html::AddLineNumbers(R, FID);
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// If we have a preprocessor, relex the file and syntax highlight.
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// We might not have a preprocessor if we come from a deserialized AST file,
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// for example.
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html::SyntaxHighlight(R, FID, PP);
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html::HighlightMacros(R, FID, PP);
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// Get the full directory name of the analyzed file.
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const FileEntry* Entry = SMgr.getFileEntryForID(FID);
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// This is a cludge; basically we want to append either the full
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// working directory if we have no directory information. This is
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// a work in progress.
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llvm::SmallString<0> DirName;
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if (llvm::sys::path::is_relative(Entry->getName())) {
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llvm::sys::fs::current_path(DirName);
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DirName += '/';
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}
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int LineNumber = (*path.rbegin())->getLocation().asLocation().getExpansionLineNumber();
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int ColumnNumber = (*path.rbegin())->getLocation().asLocation().getExpansionColumnNumber();
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// Add the name of the file as an <h1> tag.
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{
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std::string s;
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llvm::raw_string_ostream os(s);
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os << "<!-- REPORTHEADER -->\n"
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<< "<h3>Bug Summary</h3>\n<table class=\"simpletable\">\n"
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"<tr><td class=\"rowname\">File:</td><td>"
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<< html::EscapeText(DirName)
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<< html::EscapeText(Entry->getName())
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<< "</td></tr>\n<tr><td class=\"rowname\">Location:</td><td>"
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"<a href=\"#EndPath\">line "
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<< LineNumber
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<< ", column "
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<< ColumnNumber
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<< "</a></td></tr>\n"
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"<tr><td class=\"rowname\">Description:</td><td>"
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<< D.getVerboseDescription() << "</td></tr>\n";
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// Output any other meta data.
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for (PathDiagnostic::meta_iterator I=D.meta_begin(), E=D.meta_end();
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I!=E; ++I) {
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os << "<tr><td></td><td>" << html::EscapeText(*I) << "</td></tr>\n";
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}
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os << "</table>\n<!-- REPORTSUMMARYEXTRA -->\n"
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"<h3>Annotated Source Code</h3>\n";
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R.InsertTextBefore(SMgr.getLocForStartOfFile(FID), os.str());
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}
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// Embed meta-data tags.
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{
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std::string s;
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llvm::raw_string_ostream os(s);
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StringRef BugDesc = D.getVerboseDescription();
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if (!BugDesc.empty())
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os << "\n<!-- BUGDESC " << BugDesc << " -->\n";
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StringRef BugType = D.getBugType();
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if (!BugType.empty())
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os << "\n<!-- BUGTYPE " << BugType << " -->\n";
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PathDiagnosticLocation UPDLoc = D.getUniqueingLoc();
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FullSourceLoc L(SMgr.getExpansionLoc(UPDLoc.isValid()
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? UPDLoc.asLocation()
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: D.getLocation().asLocation()),
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SMgr);
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const Decl *DeclWithIssue = D.getDeclWithIssue();
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StringRef BugCategory = D.getCategory();
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if (!BugCategory.empty())
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os << "\n<!-- BUGCATEGORY " << BugCategory << " -->\n";
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os << "\n<!-- BUGFILE " << DirName << Entry->getName() << " -->\n";
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os << "\n<!-- FILENAME " << llvm::sys::path::filename(Entry->getName()) << " -->\n";
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os << "\n<!-- FUNCTIONNAME " << declName << " -->\n";
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os << "\n<!-- ISSUEHASHCONTENTOFLINEINCONTEXT "
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<< GetIssueHash(SMgr, L, D.getCheckName(), D.getBugType(), DeclWithIssue)
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<< " -->\n";
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os << "\n<!-- BUGLINE "
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<< LineNumber
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<< " -->\n";
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os << "\n<!-- BUGCOLUMN "
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<< ColumnNumber
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<< " -->\n";
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os << "\n<!-- BUGPATHLENGTH " << path.size() << " -->\n";
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// Mark the end of the tags.
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os << "\n<!-- BUGMETAEND -->\n";
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// Insert the text.
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R.InsertTextBefore(SMgr.getLocForStartOfFile(FID), os.str());
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}
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// Add CSS, header, and footer.
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html::AddHeaderFooterInternalBuiltinCSS(R, FID, Entry->getName());
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// Get the rewrite buffer.
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const RewriteBuffer *Buf = R.getRewriteBufferFor(FID);
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if (!Buf) {
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llvm::errs() << "warning: no diagnostics generated for main file.\n";
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return;
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}
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// Create a path for the target HTML file.
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int FD;
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SmallString<128> Model, ResultPath;
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if (!AnalyzerOpts.shouldWriteStableReportFilename()) {
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llvm::sys::path::append(Model, Directory, "report-%%%%%%.html");
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if (std::error_code EC =
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llvm::sys::fs::make_absolute(Model)) {
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llvm::errs() << "warning: could not make '" << Model
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<< "' absolute: " << EC.message() << '\n';
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return;
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}
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if (std::error_code EC =
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llvm::sys::fs::createUniqueFile(Model, FD, ResultPath)) {
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llvm::errs() << "warning: could not create file in '" << Directory
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<< "': " << EC.message() << '\n';
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return;
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}
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} else {
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int i = 1;
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std::error_code EC;
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do {
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// Find a filename which is not already used
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std::stringstream filename;
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Model = "";
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filename << "report-"
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<< llvm::sys::path::filename(Entry->getName()).str()
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<< "-" << declName.c_str()
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<< "-" << offsetDecl
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<< "-" << i << ".html";
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llvm::sys::path::append(Model, Directory,
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filename.str());
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EC = llvm::sys::fs::openFileForWrite(Model,
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FD,
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llvm::sys::fs::F_RW |
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llvm::sys::fs::F_Excl);
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if (EC && EC != llvm::errc::file_exists) {
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llvm::errs() << "warning: could not create file '" << Model
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<< "': " << EC.message() << '\n';
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return;
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}
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i++;
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} while (EC);
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}
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llvm::raw_fd_ostream os(FD, true);
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if (filesMade)
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filesMade->addDiagnostic(D, getName(),
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llvm::sys::path::filename(ResultPath));
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// Emit the HTML to disk.
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for (RewriteBuffer::iterator I = Buf->begin(), E = Buf->end(); I!=E; ++I)
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os << *I;
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}
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void HTMLDiagnostics::HandlePiece(Rewriter& R, FileID BugFileID,
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const PathDiagnosticPiece& P,
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unsigned num, unsigned max) {
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// For now, just draw a box above the line in question, and emit the
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// warning.
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FullSourceLoc Pos = P.getLocation().asLocation();
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if (!Pos.isValid())
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return;
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SourceManager &SM = R.getSourceMgr();
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assert(&Pos.getManager() == &SM && "SourceManagers are different!");
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std::pair<FileID, unsigned> LPosInfo = SM.getDecomposedExpansionLoc(Pos);
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if (LPosInfo.first != BugFileID)
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return;
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const llvm::MemoryBuffer *Buf = SM.getBuffer(LPosInfo.first);
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const char* FileStart = Buf->getBufferStart();
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// Compute the column number. Rewind from the current position to the start
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// of the line.
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unsigned ColNo = SM.getColumnNumber(LPosInfo.first, LPosInfo.second);
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const char *TokInstantiationPtr =Pos.getExpansionLoc().getCharacterData();
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const char *LineStart = TokInstantiationPtr-ColNo;
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// Compute LineEnd.
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const char *LineEnd = TokInstantiationPtr;
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const char* FileEnd = Buf->getBufferEnd();
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while (*LineEnd != '\n' && LineEnd != FileEnd)
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++LineEnd;
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// Compute the margin offset by counting tabs and non-tabs.
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unsigned PosNo = 0;
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for (const char* c = LineStart; c != TokInstantiationPtr; ++c)
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PosNo += *c == '\t' ? 8 : 1;
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// Create the html for the message.
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const char *Kind = nullptr;
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switch (P.getKind()) {
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case PathDiagnosticPiece::Call:
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llvm_unreachable("Calls should already be handled");
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case PathDiagnosticPiece::Event: Kind = "Event"; break;
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case PathDiagnosticPiece::ControlFlow: Kind = "Control"; break;
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// Setting Kind to "Control" is intentional.
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case PathDiagnosticPiece::Macro: Kind = "Control"; break;
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}
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std::string sbuf;
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llvm::raw_string_ostream os(sbuf);
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os << "\n<tr><td class=\"num\"></td><td class=\"line\"><div id=\"";
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if (num == max)
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os << "EndPath";
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else
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os << "Path" << num;
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os << "\" class=\"msg";
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if (Kind)
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os << " msg" << Kind;
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os << "\" style=\"margin-left:" << PosNo << "ex";
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// Output a maximum size.
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if (!isa<PathDiagnosticMacroPiece>(P)) {
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// Get the string and determining its maximum substring.
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const std::string& Msg = P.getString();
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unsigned max_token = 0;
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unsigned cnt = 0;
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unsigned len = Msg.size();
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for (std::string::const_iterator I=Msg.begin(), E=Msg.end(); I!=E; ++I)
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switch (*I) {
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default:
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++cnt;
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continue;
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case ' ':
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case '\t':
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case '\n':
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if (cnt > max_token) max_token = cnt;
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cnt = 0;
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}
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if (cnt > max_token)
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max_token = cnt;
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// Determine the approximate size of the message bubble in em.
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unsigned em;
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const unsigned max_line = 120;
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if (max_token >= max_line)
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em = max_token / 2;
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else {
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unsigned characters = max_line;
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unsigned lines = len / max_line;
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if (lines > 0) {
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for (; characters > max_token; --characters)
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if (len / characters > lines) {
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++characters;
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break;
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}
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}
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em = characters / 2;
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}
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if (em < max_line/2)
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os << "; max-width:" << em << "em";
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}
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else
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os << "; max-width:100em";
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os << "\">";
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if (max > 1) {
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os << "<table class=\"msgT\"><tr><td valign=\"top\">";
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os << "<div class=\"PathIndex";
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if (Kind) os << " PathIndex" << Kind;
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os << "\">" << num << "</div>";
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if (num > 1) {
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os << "</td><td><div class=\"PathNav\"><a href=\"#Path"
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<< (num - 1)
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<< "\" title=\"Previous event ("
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<< (num - 1)
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<< ")\">←</a></div></td>";
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}
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os << "</td><td>";
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}
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if (const PathDiagnosticMacroPiece *MP =
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dyn_cast<PathDiagnosticMacroPiece>(&P)) {
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os << "Within the expansion of the macro '";
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// Get the name of the macro by relexing it.
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{
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FullSourceLoc L = MP->getLocation().asLocation().getExpansionLoc();
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assert(L.isFileID());
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StringRef BufferInfo = L.getBufferData();
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std::pair<FileID, unsigned> LocInfo = L.getDecomposedLoc();
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const char* MacroName = LocInfo.second + BufferInfo.data();
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Lexer rawLexer(SM.getLocForStartOfFile(LocInfo.first), PP.getLangOpts(),
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BufferInfo.begin(), MacroName, BufferInfo.end());
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Token TheTok;
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rawLexer.LexFromRawLexer(TheTok);
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for (unsigned i = 0, n = TheTok.getLength(); i < n; ++i)
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os << MacroName[i];
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}
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os << "':\n";
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if (max > 1) {
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os << "</td>";
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if (num < max) {
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os << "<td><div class=\"PathNav\"><a href=\"#";
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if (num == max - 1)
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os << "EndPath";
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else
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os << "Path" << (num + 1);
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os << "\" title=\"Next event ("
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<< (num + 1)
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<< ")\">→</a></div></td>";
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}
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os << "</tr></table>";
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}
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// Within a macro piece. Write out each event.
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ProcessMacroPiece(os, *MP, 0);
|
|
}
|
|
else {
|
|
os << html::EscapeText(P.getString());
|
|
|
|
if (max > 1) {
|
|
os << "</td>";
|
|
if (num < max) {
|
|
os << "<td><div class=\"PathNav\"><a href=\"#";
|
|
if (num == max - 1)
|
|
os << "EndPath";
|
|
else
|
|
os << "Path" << (num + 1);
|
|
os << "\" title=\"Next event ("
|
|
<< (num + 1)
|
|
<< ")\">→</a></div></td>";
|
|
}
|
|
|
|
os << "</tr></table>";
|
|
}
|
|
}
|
|
|
|
os << "</div></td></tr>";
|
|
|
|
// Insert the new html.
|
|
unsigned DisplayPos = LineEnd - FileStart;
|
|
SourceLocation Loc =
|
|
SM.getLocForStartOfFile(LPosInfo.first).getLocWithOffset(DisplayPos);
|
|
|
|
R.InsertTextBefore(Loc, os.str());
|
|
|
|
// Now highlight the ranges.
|
|
ArrayRef<SourceRange> Ranges = P.getRanges();
|
|
for (ArrayRef<SourceRange>::iterator I = Ranges.begin(),
|
|
E = Ranges.end(); I != E; ++I) {
|
|
HighlightRange(R, LPosInfo.first, *I);
|
|
}
|
|
}
|
|
|
|
static void EmitAlphaCounter(raw_ostream &os, unsigned n) {
|
|
unsigned x = n % ('z' - 'a');
|
|
n /= 'z' - 'a';
|
|
|
|
if (n > 0)
|
|
EmitAlphaCounter(os, n);
|
|
|
|
os << char('a' + x);
|
|
}
|
|
|
|
unsigned HTMLDiagnostics::ProcessMacroPiece(raw_ostream &os,
|
|
const PathDiagnosticMacroPiece& P,
|
|
unsigned num) {
|
|
|
|
for (PathPieces::const_iterator I = P.subPieces.begin(), E=P.subPieces.end();
|
|
I!=E; ++I) {
|
|
|
|
if (const PathDiagnosticMacroPiece *MP =
|
|
dyn_cast<PathDiagnosticMacroPiece>(*I)) {
|
|
num = ProcessMacroPiece(os, *MP, num);
|
|
continue;
|
|
}
|
|
|
|
if (PathDiagnosticEventPiece *EP = dyn_cast<PathDiagnosticEventPiece>(*I)) {
|
|
os << "<div class=\"msg msgEvent\" style=\"width:94%; "
|
|
"margin-left:5px\">"
|
|
"<table class=\"msgT\"><tr>"
|
|
"<td valign=\"top\"><div class=\"PathIndex PathIndexEvent\">";
|
|
EmitAlphaCounter(os, num++);
|
|
os << "</div></td><td valign=\"top\">"
|
|
<< html::EscapeText(EP->getString())
|
|
<< "</td></tr></table></div>\n";
|
|
}
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
void HTMLDiagnostics::HighlightRange(Rewriter& R, FileID BugFileID,
|
|
SourceRange Range,
|
|
const char *HighlightStart,
|
|
const char *HighlightEnd) {
|
|
SourceManager &SM = R.getSourceMgr();
|
|
const LangOptions &LangOpts = R.getLangOpts();
|
|
|
|
SourceLocation InstantiationStart = SM.getExpansionLoc(Range.getBegin());
|
|
unsigned StartLineNo = SM.getExpansionLineNumber(InstantiationStart);
|
|
|
|
SourceLocation InstantiationEnd = SM.getExpansionLoc(Range.getEnd());
|
|
unsigned EndLineNo = SM.getExpansionLineNumber(InstantiationEnd);
|
|
|
|
if (EndLineNo < StartLineNo)
|
|
return;
|
|
|
|
if (SM.getFileID(InstantiationStart) != BugFileID ||
|
|
SM.getFileID(InstantiationEnd) != BugFileID)
|
|
return;
|
|
|
|
// Compute the column number of the end.
|
|
unsigned EndColNo = SM.getExpansionColumnNumber(InstantiationEnd);
|
|
unsigned OldEndColNo = EndColNo;
|
|
|
|
if (EndColNo) {
|
|
// Add in the length of the token, so that we cover multi-char tokens.
|
|
EndColNo += Lexer::MeasureTokenLength(Range.getEnd(), SM, LangOpts)-1;
|
|
}
|
|
|
|
// Highlight the range. Make the span tag the outermost tag for the
|
|
// selected range.
|
|
|
|
SourceLocation E =
|
|
InstantiationEnd.getLocWithOffset(EndColNo - OldEndColNo);
|
|
|
|
html::HighlightRange(R, InstantiationStart, E, HighlightStart, HighlightEnd);
|
|
}
|