639 lines
20 KiB
C++
639 lines
20 KiB
C++
//===- SourceCoverageViewHTML.cpp - A html code coverage view -------------===//
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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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/// \file This file implements the html coverage renderer.
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///
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//===----------------------------------------------------------------------===//
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#include "CoverageReport.h"
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#include "SourceCoverageViewHTML.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/Path.h"
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using namespace llvm;
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namespace {
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// Return a string with the special characters in \p Str escaped.
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std::string escape(StringRef Str, const CoverageViewOptions &Opts) {
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std::string Result;
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unsigned ColNum = 0; // Record the column number.
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for (char C : Str) {
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++ColNum;
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if (C == '&')
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Result += "&";
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else if (C == '<')
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Result += "<";
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else if (C == '>')
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Result += ">";
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else if (C == '\"')
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Result += """;
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else if (C == '\n' || C == '\r') {
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Result += C;
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ColNum = 0;
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} else if (C == '\t') {
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// Replace '\t' with TabSize spaces.
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unsigned NumSpaces = Opts.TabSize - (--ColNum % Opts.TabSize);
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for (unsigned I = 0; I < NumSpaces; ++I)
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Result += " ";
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ColNum += NumSpaces;
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} else
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Result += C;
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}
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return Result;
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}
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// Create a \p Name tag around \p Str, and optionally set its \p ClassName.
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std::string tag(const std::string &Name, const std::string &Str,
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const std::string &ClassName = "") {
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std::string Tag = "<" + Name;
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if (ClassName != "")
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Tag += " class='" + ClassName + "'";
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return Tag + ">" + Str + "</" + Name + ">";
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}
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// Create an anchor to \p Link with the label \p Str.
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std::string a(const std::string &Link, const std::string &Str,
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const std::string &TargetName = "") {
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std::string Name = TargetName.empty() ? "" : ("name='" + TargetName + "' ");
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return "<a " + Name + "href='" + Link + "'>" + Str + "</a>";
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}
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const char *BeginHeader =
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"<head>"
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"<meta name='viewport' content='width=device-width,initial-scale=1'>"
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"<meta charset='UTF-8'>";
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const char *CSSForCoverage =
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R"(.red {
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background-color: #ffd0d0;
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}
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.cyan {
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background-color: cyan;
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}
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body {
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font-family: -apple-system, sans-serif;
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}
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pre {
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margin-top: 0px !important;
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margin-bottom: 0px !important;
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}
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.source-name-title {
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padding: 5px 10px;
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border-bottom: 1px solid #dbdbdb;
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background-color: #eee;
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line-height: 35px;
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}
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.centered {
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display: table;
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margin-left: left;
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margin-right: auto;
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border: 1px solid #dbdbdb;
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border-radius: 3px;
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}
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.expansion-view {
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background-color: rgba(0, 0, 0, 0);
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margin-left: 0px;
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margin-top: 5px;
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margin-right: 5px;
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margin-bottom: 5px;
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border: 1px solid #dbdbdb;
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border-radius: 3px;
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}
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table {
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border-collapse: collapse;
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}
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.light-row {
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background: #ffffff;
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border: 1px solid #dbdbdb;
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}
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.column-entry {
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text-align: right;
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}
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.column-entry-left {
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text-align: left;
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}
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.column-entry-yellow {
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text-align: right;
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background-color: #ffffd0;
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}
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.column-entry-red {
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text-align: right;
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background-color: #ffd0d0;
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}
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.column-entry-green {
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text-align: right;
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background-color: #d0ffd0;
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}
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.line-number {
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text-align: right;
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color: #aaa;
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}
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.covered-line {
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text-align: right;
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color: #0080ff;
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}
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.uncovered-line {
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text-align: right;
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color: #ff3300;
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}
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.tooltip {
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position: relative;
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display: inline;
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background-color: #b3e6ff;
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text-decoration: none;
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}
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.tooltip span.tooltip-content {
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position: absolute;
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width: 100px;
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margin-left: -50px;
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color: #FFFFFF;
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background: #000000;
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height: 30px;
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line-height: 30px;
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text-align: center;
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visibility: hidden;
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border-radius: 6px;
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}
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.tooltip span.tooltip-content:after {
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content: '';
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position: absolute;
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top: 100%;
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left: 50%;
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margin-left: -8px;
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width: 0; height: 0;
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border-top: 8px solid #000000;
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border-right: 8px solid transparent;
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border-left: 8px solid transparent;
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}
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:hover.tooltip span.tooltip-content {
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visibility: visible;
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opacity: 0.8;
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bottom: 30px;
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left: 50%;
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z-index: 999;
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}
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th, td {
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vertical-align: top;
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padding: 2px 5px;
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border-collapse: collapse;
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border-right: solid 1px #eee;
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border-left: solid 1px #eee;
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}
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td:first-child {
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border-left: none;
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}
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td:last-child {
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border-right: none;
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}
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)";
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const char *EndHeader = "</head>";
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const char *BeginCenteredDiv = "<div class='centered'>";
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const char *EndCenteredDiv = "</div>";
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const char *BeginSourceNameDiv = "<div class='source-name-title'>";
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const char *EndSourceNameDiv = "</div>";
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const char *BeginCodeTD = "<td class='code'>";
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const char *EndCodeTD = "</td>";
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const char *BeginPre = "<pre>";
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const char *EndPre = "</pre>";
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const char *BeginExpansionDiv = "<div class='expansion-view'>";
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const char *EndExpansionDiv = "</div>";
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const char *BeginTable = "<table>";
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const char *EndTable = "</table>";
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const char *ProjectTitleTag = "h1";
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const char *ReportTitleTag = "h2";
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const char *CreatedTimeTag = "h4";
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std::string getPathToStyle(StringRef ViewPath) {
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std::string PathToStyle = "";
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std::string PathSep = sys::path::get_separator();
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unsigned NumSeps = ViewPath.count(PathSep);
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for (unsigned I = 0, E = NumSeps; I < E; ++I)
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PathToStyle += ".." + PathSep;
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return PathToStyle + "style.css";
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}
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void emitPrelude(raw_ostream &OS, const CoverageViewOptions &Opts,
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const std::string &PathToStyle = "") {
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OS << "<!doctype html>"
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"<html>"
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<< BeginHeader;
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// Link to a stylesheet if one is available. Otherwise, use the default style.
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if (PathToStyle.empty())
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OS << "<style>" << CSSForCoverage << "</style>";
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else
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OS << "<link rel='stylesheet' type='text/css' href='"
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<< escape(PathToStyle, Opts) << "'>";
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OS << EndHeader << "<body>";
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}
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void emitEpilog(raw_ostream &OS) {
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OS << "</body>"
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<< "</html>";
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}
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} // anonymous namespace
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Expected<CoveragePrinter::OwnedStream>
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CoveragePrinterHTML::createViewFile(StringRef Path, bool InToplevel) {
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auto OSOrErr = createOutputStream(Path, "html", InToplevel);
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if (!OSOrErr)
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return OSOrErr;
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OwnedStream OS = std::move(OSOrErr.get());
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if (!Opts.hasOutputDirectory()) {
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emitPrelude(*OS.get(), Opts);
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} else {
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std::string ViewPath = getOutputPath(Path, "html", InToplevel);
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emitPrelude(*OS.get(), Opts, getPathToStyle(ViewPath));
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}
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return std::move(OS);
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}
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void CoveragePrinterHTML::closeViewFile(OwnedStream OS) {
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emitEpilog(*OS.get());
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}
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/// Emit column labels for the table in the index.
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static void emitColumnLabelsForIndex(raw_ostream &OS) {
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SmallVector<std::string, 4> Columns;
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Columns.emplace_back(tag("td", "Filename", "column-entry-left"));
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for (const char *Label : {"Function Coverage", "Instantiation Coverage",
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"Line Coverage", "Region Coverage"})
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Columns.emplace_back(tag("td", Label, "column-entry"));
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OS << tag("tr", join(Columns.begin(), Columns.end(), ""));
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}
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/// Render a file coverage summary (\p FCS) in a table row. If \p IsTotals is
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/// false, link the summary to \p SF.
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void CoveragePrinterHTML::emitFileSummary(raw_ostream &OS, StringRef SF,
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const FileCoverageSummary &FCS,
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bool IsTotals) const {
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SmallVector<std::string, 8> Columns;
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// Format a coverage triple and add the result to the list of columns.
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auto AddCoverageTripleToColumn = [&Columns](unsigned Hit, unsigned Total,
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float Pctg) {
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std::string S;
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{
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raw_string_ostream RSO{S};
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if (Total)
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RSO << format("%*.2f", 7, Pctg) << "% ";
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else
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RSO << "- ";
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RSO << '(' << Hit << '/' << Total << ')';
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}
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const char *CellClass = "column-entry-yellow";
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if (Hit == Total)
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CellClass = "column-entry-green";
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else if (Pctg < 80.0)
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CellClass = "column-entry-red";
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Columns.emplace_back(tag("td", tag("pre", S), CellClass));
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};
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// Simplify the display file path, and wrap it in a link if requested.
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std::string Filename;
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if (IsTotals) {
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Filename = "TOTALS";
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} else {
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SmallString<128> LinkTextStr(sys::path::relative_path(FCS.Name));
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sys::path::remove_dots(LinkTextStr, /*remove_dot_dots=*/true);
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sys::path::native(LinkTextStr);
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std::string LinkText = escape(LinkTextStr, Opts);
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std::string LinkTarget =
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escape(getOutputPath(SF, "html", /*InToplevel=*/false), Opts);
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Filename = a(LinkTarget, LinkText);
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}
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Columns.emplace_back(tag("td", tag("pre", Filename)));
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AddCoverageTripleToColumn(FCS.FunctionCoverage.Executed,
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FCS.FunctionCoverage.NumFunctions,
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FCS.FunctionCoverage.getPercentCovered());
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AddCoverageTripleToColumn(FCS.InstantiationCoverage.Executed,
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FCS.InstantiationCoverage.NumFunctions,
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FCS.InstantiationCoverage.getPercentCovered());
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AddCoverageTripleToColumn(FCS.LineCoverage.Covered, FCS.LineCoverage.NumLines,
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FCS.LineCoverage.getPercentCovered());
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AddCoverageTripleToColumn(FCS.RegionCoverage.Covered,
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FCS.RegionCoverage.NumRegions,
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FCS.RegionCoverage.getPercentCovered());
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OS << tag("tr", join(Columns.begin(), Columns.end(), ""), "light-row");
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}
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Error CoveragePrinterHTML::createIndexFile(
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ArrayRef<std::string> SourceFiles,
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const coverage::CoverageMapping &Coverage) {
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// Emit the default stylesheet.
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auto CSSOrErr = createOutputStream("style", "css", /*InToplevel=*/true);
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if (Error E = CSSOrErr.takeError())
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return E;
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OwnedStream CSS = std::move(CSSOrErr.get());
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CSS->operator<<(CSSForCoverage);
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// Emit a file index along with some coverage statistics.
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auto OSOrErr = createOutputStream("index", "html", /*InToplevel=*/true);
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if (Error E = OSOrErr.takeError())
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return E;
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auto OS = std::move(OSOrErr.get());
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raw_ostream &OSRef = *OS.get();
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assert(Opts.hasOutputDirectory() && "No output directory for index file");
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emitPrelude(OSRef, Opts, getPathToStyle(""));
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// Emit some basic information about the coverage report.
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if (Opts.hasProjectTitle())
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OSRef << tag(ProjectTitleTag, escape(Opts.ProjectTitle, Opts));
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OSRef << tag(ReportTitleTag, "Coverage Report");
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if (Opts.hasCreatedTime())
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OSRef << tag(CreatedTimeTag, escape(Opts.CreatedTimeStr, Opts));
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// Emit a link to some documentation.
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OSRef << tag("p", "Click " +
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a("http://clang.llvm.org/docs/"
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"SourceBasedCodeCoverage.html#interpreting-reports",
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"here") +
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" for information about interpreting this report.");
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// Emit a table containing links to reports for each file in the covmapping.
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OSRef << BeginCenteredDiv << BeginTable;
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emitColumnLabelsForIndex(OSRef);
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FileCoverageSummary Totals("TOTALS");
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auto FileReports =
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CoverageReport::prepareFileReports(Coverage, Totals, SourceFiles);
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for (unsigned I = 0, E = FileReports.size(); I < E; ++I)
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emitFileSummary(OSRef, SourceFiles[I], FileReports[I]);
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emitFileSummary(OSRef, "Totals", Totals, /*IsTotals=*/true);
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OSRef << EndTable << EndCenteredDiv
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<< tag("h5", escape(Opts.getLLVMVersionString(), Opts));
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emitEpilog(OSRef);
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return Error::success();
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}
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void SourceCoverageViewHTML::renderViewHeader(raw_ostream &OS) {
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OS << BeginCenteredDiv << BeginTable;
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}
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void SourceCoverageViewHTML::renderViewFooter(raw_ostream &OS) {
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OS << EndTable << EndCenteredDiv;
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}
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void SourceCoverageViewHTML::renderSourceName(raw_ostream &OS, bool WholeFile) {
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OS << BeginSourceNameDiv << tag("pre", escape(getSourceName(), getOptions()))
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<< EndSourceNameDiv;
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}
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void SourceCoverageViewHTML::renderLinePrefix(raw_ostream &OS, unsigned) {
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OS << "<tr>";
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}
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void SourceCoverageViewHTML::renderLineSuffix(raw_ostream &OS, unsigned) {
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// If this view has sub-views, renderLine() cannot close the view's cell.
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// Take care of it here, after all sub-views have been rendered.
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if (hasSubViews())
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OS << EndCodeTD;
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OS << "</tr>";
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}
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void SourceCoverageViewHTML::renderViewDivider(raw_ostream &, unsigned) {
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// The table-based output makes view dividers unnecessary.
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}
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void SourceCoverageViewHTML::renderLine(
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raw_ostream &OS, LineRef L, const coverage::CoverageSegment *WrappedSegment,
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CoverageSegmentArray Segments, unsigned ExpansionCol, unsigned) {
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StringRef Line = L.Line;
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unsigned LineNo = L.LineNo;
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// Steps for handling text-escaping, highlighting, and tooltip creation:
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//
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// 1. Split the line into N+1 snippets, where N = |Segments|. The first
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// snippet starts from Col=1 and ends at the start of the first segment.
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// The last snippet starts at the last mapped column in the line and ends
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// at the end of the line. Both are required but may be empty.
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SmallVector<std::string, 8> Snippets;
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unsigned LCol = 1;
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auto Snip = [&](unsigned Start, unsigned Len) {
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Snippets.push_back(Line.substr(Start, Len));
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LCol += Len;
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};
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Snip(LCol - 1, Segments.empty() ? 0 : (Segments.front()->Col - 1));
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for (unsigned I = 1, E = Segments.size(); I < E; ++I)
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Snip(LCol - 1, Segments[I]->Col - LCol);
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// |Line| + 1 is needed to avoid underflow when, e.g |Line| = 0 and LCol = 1.
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Snip(LCol - 1, Line.size() + 1 - LCol);
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// 2. Escape all of the snippets.
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for (unsigned I = 0, E = Snippets.size(); I < E; ++I)
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Snippets[I] = escape(Snippets[I], getOptions());
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// 3. Use \p WrappedSegment to set the highlight for snippet 0. Use segment
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// 1 to set the highlight for snippet 2, segment 2 to set the highlight for
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// snippet 3, and so on.
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Optional<std::string> Color;
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SmallVector<std::pair<unsigned, unsigned>, 2> HighlightedRanges;
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auto Highlight = [&](const std::string &Snippet, unsigned LC, unsigned RC) {
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if (getOptions().Debug)
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HighlightedRanges.emplace_back(LC, RC);
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return tag("span", Snippet, Color.getValue());
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};
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auto CheckIfUncovered = [](const coverage::CoverageSegment *S) {
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return S && S->HasCount && S->Count == 0;
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};
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if (CheckIfUncovered(WrappedSegment)) {
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Color = "red";
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if (!Snippets[0].empty())
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Snippets[0] = Highlight(Snippets[0], 1, 1 + Snippets[0].size());
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}
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for (unsigned I = 0, E = Segments.size(); I < E; ++I) {
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const auto *CurSeg = Segments[I];
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if (CurSeg->Col == ExpansionCol)
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Color = "cyan";
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else if (CheckIfUncovered(CurSeg))
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Color = "red";
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else
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Color = None;
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if (Color.hasValue())
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Snippets[I + 1] = Highlight(Snippets[I + 1], CurSeg->Col,
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CurSeg->Col + Snippets[I + 1].size());
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}
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if (Color.hasValue() && Segments.empty())
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Snippets.back() = Highlight(Snippets.back(), 1, 1 + Snippets.back().size());
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if (getOptions().Debug) {
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for (const auto &Range : HighlightedRanges) {
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errs() << "Highlighted line " << LineNo << ", " << Range.first << " -> ";
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if (Range.second == 0)
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errs() << "?";
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else
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errs() << Range.second;
|
|
errs() << "\n";
|
|
}
|
|
}
|
|
|
|
// 4. Snippets[1:N+1] correspond to \p Segments[0:N]: use these to generate
|
|
// sub-line region count tooltips if needed.
|
|
|
|
bool HasMultipleRegions = [&] {
|
|
unsigned RegionCount = 0;
|
|
for (const auto *S : Segments)
|
|
if (S->HasCount && S->IsRegionEntry)
|
|
if (++RegionCount > 1)
|
|
return true;
|
|
return false;
|
|
}();
|
|
|
|
if (shouldRenderRegionMarkers(HasMultipleRegions)) {
|
|
for (unsigned I = 0, E = Segments.size(); I < E; ++I) {
|
|
const auto *CurSeg = Segments[I];
|
|
if (!CurSeg->IsRegionEntry || !CurSeg->HasCount)
|
|
continue;
|
|
|
|
Snippets[I + 1] =
|
|
tag("div", Snippets[I + 1] + tag("span", formatCount(CurSeg->Count),
|
|
"tooltip-content"),
|
|
"tooltip");
|
|
}
|
|
}
|
|
|
|
OS << BeginCodeTD;
|
|
OS << BeginPre;
|
|
for (const auto &Snippet : Snippets)
|
|
OS << Snippet;
|
|
OS << EndPre;
|
|
|
|
// If there are no sub-views left to attach to this cell, end the cell.
|
|
// Otherwise, end it after the sub-views are rendered (renderLineSuffix()).
|
|
if (!hasSubViews())
|
|
OS << EndCodeTD;
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderLineCoverageColumn(
|
|
raw_ostream &OS, const LineCoverageStats &Line) {
|
|
std::string Count = "";
|
|
if (Line.isMapped())
|
|
Count = tag("pre", formatCount(Line.ExecutionCount));
|
|
std::string CoverageClass =
|
|
(Line.ExecutionCount > 0) ? "covered-line" : "uncovered-line";
|
|
OS << tag("td", Count, CoverageClass);
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderLineNumberColumn(raw_ostream &OS,
|
|
unsigned LineNo) {
|
|
std::string LineNoStr = utostr(uint64_t(LineNo));
|
|
std::string TargetName = "L" + LineNoStr;
|
|
OS << tag("td", a("#" + TargetName, tag("pre", LineNoStr), TargetName),
|
|
"line-number");
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderRegionMarkers(raw_ostream &,
|
|
CoverageSegmentArray,
|
|
unsigned) {
|
|
// Region markers are rendered in-line using tooltips.
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderExpansionSite(
|
|
raw_ostream &OS, LineRef L, const coverage::CoverageSegment *WrappedSegment,
|
|
CoverageSegmentArray Segments, unsigned ExpansionCol, unsigned ViewDepth) {
|
|
// Render the line containing the expansion site. No extra formatting needed.
|
|
renderLine(OS, L, WrappedSegment, Segments, ExpansionCol, ViewDepth);
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderExpansionView(raw_ostream &OS,
|
|
ExpansionView &ESV,
|
|
unsigned ViewDepth) {
|
|
OS << BeginExpansionDiv;
|
|
ESV.View->print(OS, /*WholeFile=*/false, /*ShowSourceName=*/false,
|
|
ViewDepth + 1);
|
|
OS << EndExpansionDiv;
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderInstantiationView(raw_ostream &OS,
|
|
InstantiationView &ISV,
|
|
unsigned ViewDepth) {
|
|
OS << BeginExpansionDiv;
|
|
if (!ISV.View)
|
|
OS << BeginSourceNameDiv
|
|
<< tag("pre",
|
|
escape("Unexecuted instantiation: " + ISV.FunctionName.str(),
|
|
getOptions()))
|
|
<< EndSourceNameDiv;
|
|
else
|
|
ISV.View->print(OS, /*WholeFile=*/false, /*ShowSourceName=*/true,
|
|
ViewDepth);
|
|
OS << EndExpansionDiv;
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderTitle(raw_ostream &OS, StringRef Title) {
|
|
if (getOptions().hasProjectTitle())
|
|
OS << tag(ProjectTitleTag, escape(getOptions().ProjectTitle, getOptions()));
|
|
OS << tag(ReportTitleTag, escape(Title, getOptions()));
|
|
if (getOptions().hasCreatedTime())
|
|
OS << tag(CreatedTimeTag,
|
|
escape(getOptions().CreatedTimeStr, getOptions()));
|
|
}
|
|
|
|
void SourceCoverageViewHTML::renderTableHeader(raw_ostream &OS,
|
|
unsigned FirstUncoveredLineNo,
|
|
unsigned ViewDepth) {
|
|
std::string SourceLabel;
|
|
if (FirstUncoveredLineNo == 0) {
|
|
SourceLabel = tag("td", tag("pre", "Source"));
|
|
} else {
|
|
std::string LinkTarget = "#L" + utostr(uint64_t(FirstUncoveredLineNo));
|
|
SourceLabel =
|
|
tag("td", tag("pre", "Source (" +
|
|
a(LinkTarget, "jump to first uncovered line") +
|
|
")"));
|
|
}
|
|
|
|
renderLinePrefix(OS, ViewDepth);
|
|
OS << tag("td", tag("pre", "Line")) << tag("td", tag("pre", "Count"))
|
|
<< SourceLabel;
|
|
renderLineSuffix(OS, ViewDepth);
|
|
}
|