tor-browser

The Tor Browser
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InspectorCSSParser.cpp (2204B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/InspectorCSSParser.h"
      8 
      9 #include "mozilla/ServoBindings.h"
     10 #include "mozilla/ServoStyleConsts.h"
     11 #include "mozilla/UniquePtr.h"
     12 
     13 namespace mozilla::dom {
     14 
     15 InspectorCSSParser::InspectorCSSParser(const nsACString& aText)
     16    : mInput(aText) {
     17  mParserState = Servo_CSSParser_create(&mInput);
     18 }
     19 
     20 UniquePtr<InspectorCSSParser> InspectorCSSParser::Constructor(
     21    const GlobalObject& aGlobal, const nsACString& aText) {
     22  return MakeUnique<InspectorCSSParser>(aText);
     23 }
     24 
     25 InspectorCSSParser::~InspectorCSSParser() {
     26  Servo_CSSParser_destroy(mParserState);
     27  mParserState = nullptr;
     28 }
     29 
     30 uint32_t InspectorCSSParser::LineNumber() const { return mLineNumber; }
     31 
     32 uint32_t InspectorCSSParser::ColumnNumber() const {
     33  // mColumnNumber is 1-based, but consumers expect 0-based.
     34  return mColumnNumber - 1;
     35 }
     36 
     37 void InspectorCSSParser::NextToken(Nullable<InspectorCSSToken>& aResult) {
     38  StyleCSSToken cssToken;
     39  if (!Servo_CSSParser_NextToken(&mInput, mParserState, &cssToken)) {
     40    aResult.SetNull();
     41 
     42    mLineNumber = Servo_CSSParser_GetCurrentLine(mParserState);
     43    mColumnNumber = Servo_CSSParser_GetCurrentColumn(mParserState);
     44 
     45    return;
     46  }
     47 
     48  InspectorCSSToken& inspectorCssToken = aResult.SetValue();
     49  inspectorCssToken.mText.Append(cssToken.text);
     50  inspectorCssToken.mTokenType.Append(cssToken.token_type);
     51  if (cssToken.has_value) {
     52    inspectorCssToken.mValue.Append(cssToken.value);
     53  } else {
     54    inspectorCssToken.mValue.SetIsVoid(true);
     55  }
     56  if (cssToken.has_unit) {
     57    inspectorCssToken.mUnit.Append(cssToken.unit);
     58  } else {
     59    inspectorCssToken.mUnit.SetIsVoid(true);
     60  }
     61  if (cssToken.has_number) {
     62    // Reduce precision to avoid floating point inprecision
     63    inspectorCssToken.mNumber = round(cssToken.number * 100) / 100.0;
     64  }
     65 
     66  mLineNumber = cssToken.line;
     67  mColumnNumber = cssToken.column;
     68 }
     69 
     70 }  // namespace mozilla::dom