third_party/WebKit/Source/core/testing/CoreTestPrinters.cpp

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6
   7 #include "core/dom/Document.h"
   8 #include "core/dom/Range.h"
   9 #include "core/dom/Text.h"
  10 #include "core/html/HTMLElement.h"
  11 #include "wtf/text/StringBuilder.h"
  12 #include <ios>
  13 #include <ostream> // NOLINT
  14
  15 namespace blink {
  16
  17 namespace {
  18
  19 // Copied from "dom/Node.cpp".
  20 void appendAttributeDesc(const Node& node, StringBuilder& stringBuilder, const QualifiedName& name, const char* attrDesc)
  21 {
  22     if (!node.isElementNode())
  23         return;
  24
  25     String attr = toElement(node).getAttribute(name);
  26     if (attr.isEmpty())
  27         return;
  28
  29     stringBuilder.append(attrDesc);
  30     stringBuilder.appendLiteral("=\"");
  31     stringBuilder.append(attr);
  32     stringBuilder.appendLiteral("\"");
  33 }
  34
  35 template <typename PositionType>
  36 std::ostream& printPosition(std::ostream& ostream, const PositionType& position)
  37 {
  38     if (position.isNull())
  39         return ostream << "null";
  40     ostream << position.anchorNode() << "@";
  41     if (position.isOffsetInAnchor())
  42         return ostream << position.offsetInContainerNode();
  43     return ostream << position.anchorType();
  44 }
  45
  46 } // namespace
  47
  48 std::ostream& operator<<(std::ostream& ostream, PositionAnchorType anchorType)
  49 {
  50     switch (anchorType) {
  51     case PositionAnchorType::AfterAnchor:
  52         return ostream << "afterAnchor";
  53     case PositionAnchorType::AfterChildren:
  54         return ostream << "afterChildren";
  55     case PositionAnchorType::BeforeAnchor:
  56         return ostream << "beforeAnchor";
  57     case PositionAnchorType::BeforeChildren:
  58         return ostream << "beforeChildren";
  59     case PositionAnchorType::OffsetInAnchor:
  60         return ostream << "offsetInAnchor";
  61     }
  62     ASSERT_NOT_REACHED();
  63     return ostream << "anchorType=" << static_cast<int>(anchorType);
  64 }
  65
  66 // |std::ostream| version of |Node::showNode|
  67 std::ostream& operator<<(std::ostream& ostream, const Node& node)
  68 {
  69     ostream << node.nodeName().utf8().data();
  70     if (node.isTextNode())
  71         return ostream << " " << node.nodeValue();
  72     StringBuilder attrs;
  73     appendAttributeDesc(node, attrs, HTMLNames::idAttr, " ID");
  74     appendAttributeDesc(node, attrs, HTMLNames::classAttr, " CLASS");
  75     appendAttributeDesc(node, attrs, HTMLNames::styleAttr, " STYLE");
  76     return ostream << attrs.toString().utf8().data();
  77 }
  78
  79 std::ostream& operator<<(std::ostream& ostream, const Node* node)
  80 {
  81     if (!node)
  82         return ostream << "null";
  83     return ostream << *node;
  84 }
  85
  86 std::ostream& operator<<(std::ostream& ostream, const Position& position)
  87 {
  88     return printPosition(ostream, position);
  89 }
  90
  91 std::ostream& operator<<(std::ostream& ostream, const PositionInComposedTree& position)
  92 {
  93     return printPosition(ostream, position);
  94 }
  95
  96 } // namespace blink