1 files changed, 70 insertions, 0 deletions
diff --git a/layout/inspector/InspectorCSSParser.cpp b/layout/inspector/InspectorCSSParser.cpp
new file mode 100644
index 0000000000..bc9cbf1487
--- /dev/null
+++ b/layout/inspector/InspectorCSSParser.cpp
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "mozilla/dom/InspectorCSSParser.h"
+
+#include "mozilla/ServoBindings.h"
+#include "mozilla/ServoStyleConsts.h"
+#include "mozilla/UniquePtr.h"
+
+namespace mozilla::dom {
+
+InspectorCSSParser::InspectorCSSParser(const nsACString& aText)
+    : mInput(aText) {
+  mParserState = Servo_CSSParser_create(&mInput);
+}
+
+UniquePtr<InspectorCSSParser> InspectorCSSParser::Constructor(
+    const GlobalObject& aGlobal, const nsACString& aText) {
+  return MakeUnique<InspectorCSSParser>(aText);
+}
+
+InspectorCSSParser::~InspectorCSSParser() {
+  Servo_CSSParser_destroy(mParserState);
+  mParserState = nullptr;
+}
+
+uint32_t InspectorCSSParser::LineNumber() const { return mLineNumber; }
+
+uint32_t InspectorCSSParser::ColumnNumber() const {
+  // mColumnNumber is 1-based, but consumers expect 0-based.
+  return mColumnNumber - 1;
+}
+
+void InspectorCSSParser::NextToken(Nullable<InspectorCSSToken>& aResult) {
+  StyleCSSToken cssToken;
+  if (!Servo_CSSParser_NextToken(&mInput, mParserState, &cssToken)) {
+    aResult.SetNull();
+
+    mLineNumber = Servo_CSSParser_GetCurrentLine(mParserState);
+    mColumnNumber = Servo_CSSParser_GetCurrentColumn(mParserState);
+
+    return;
+  }
+
+  InspectorCSSToken& inspectorCssToken = aResult.SetValue();
+  inspectorCssToken.mText.Append(cssToken.text);
+  inspectorCssToken.mTokenType.Append(cssToken.token_type);
+  if (cssToken.has_value) {
+    inspectorCssToken.mValue.Append(cssToken.value);
+  } else {
+    inspectorCssToken.mValue.SetIsVoid(true);
+  }
+  if (cssToken.has_unit) {
+    inspectorCssToken.mUnit.Append(cssToken.unit);
+  } else {
+    inspectorCssToken.mUnit.SetIsVoid(true);
+  }
+  if (cssToken.has_number) {
+    // Reduce precision to avoid floating point inprecision
+    inspectorCssToken.mNumber = round(cssToken.number * 100) / 100.0;
+  }
+
+  mLineNumber = cssToken.line;
+  mColumnNumber = cssToken.column;
+}
+
+}  // namespace mozilla::dom