Pull args, intl, logging, shelf, and source_maps out of the SDK.

pkg/csslib/lib/src/tree_printer.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-part of csslib.visitor;
-
-// TODO(terry): Enable class for debug only; when conditional imports enabled.
-
-/** Helper function to dump the CSS AST. */
-String treeToDebugString(StyleSheet styleSheet, [bool useSpan = false]) {
-  var to = new TreeOutput();
-  new _TreePrinter(to, useSpan)..visitTree(styleSheet);
-  return to.toString();
-}
-
-/** Tree dump for debug output of the CSS AST. */
-class _TreePrinter extends Visitor {
-  final TreeOutput output;
-  final bool useSpan;
-  _TreePrinter(this.output, this.useSpan) { output.printer = this; }
-
-  void visitTree(StyleSheet tree) => visitStylesheet(tree);
-
-  void heading(String heading, node) {
-    if (useSpan) {
-      output.heading(heading, node.span);
-    } else {
-      output.heading(heading);
-    }
-  }
-
-  void visitStylesheet(StyleSheet node) {
-    heading('Stylesheet', node);
-    output.depth++;
-    super.visitStyleSheet(node);
-    output.depth--;
-  }
-
-  void visitTopLevelProduction(TopLevelProduction node) {
-    heading('TopLevelProduction', node);
-  }
-
-  void visitDirective(Directive node) {
-    heading('Directive', node);
-  }
-
-  void visitCssComment(CssComment node) {
-    heading('Comment', node);
-    output.depth++;
-    output.writeValue('comment value', node.comment);
-    output.depth--;
-  }
-
-  void visitCommentDefinition(CommentDefinition node) {
-    heading('CommentDefinition (CDO/CDC)', node);
-    output.depth++;
-    output.writeValue('comment value', node.comment);
-    output.depth--;
-  }
-
-  void visitMediaExpression(MediaExpression node) {
-    heading('MediaExpression', node);
-    output.writeValue('feature', node.mediaFeature);
-    if (node.andOperator) output.writeValue('AND operator', '');
-    visitExpressions(node.exprs);
-  }
-
-  void visitMediaQueries(MediaQuery query) {
-    output.heading('MediaQueries');
-    output.writeValue('unary', query.unary);
-    output.writeValue('media type', query.mediaType);
-    output.writeNodeList('media expressions', query.expressions);
-  }
-
-  void visitMediaDirective(MediaDirective node) {
-    heading('MediaDirective', node);
-    output.depth++;
-    output.writeNodeList('media queries', node.mediaQueries);
-    output.writeNodeList('rule sets', node.rulesets);
-    super.visitMediaDirective(node);
-    output.depth--;
-  }
-
-  void visitPageDirective(PageDirective node) {
-    heading('PageDirective', node);
-    output.depth++;
-    output.writeValue('pseudo page', node._pseudoPage);
-    super.visitPageDirective(node);
-    output.depth;
-  }
-
-  void visitCharsetDirective(CharsetDirective node) {
-    heading('Charset Directive', node);
-    output.writeValue('charset encoding', node.charEncoding);
-  }
-
-  void visitImportDirective(ImportDirective node) {
-    heading('ImportDirective', node);
-    output.depth++;
-    output.writeValue('import', node.import);
-    super.visitImportDirective(node);
-    output.writeNodeList('media', node.mediaQueries);
-    output.depth--;
-  }
-
-  void visitContentDirective(ContentDirective node) {
-    print("ContentDirective not implemented");
-  }
-
-  void visitKeyFrameDirective(KeyFrameDirective node) {
-    heading('KeyFrameDirective', node);
-    output.depth++;
-    output.writeValue('keyframe', node.keyFrameName);
-    output.writeValue('name', node.name);
-    output.writeNodeList('blocks', node._blocks);
-    output.depth--;
-  }
-
-  void visitKeyFrameBlock(KeyFrameBlock node) {
-    heading('KeyFrameBlock', node);
-    output.depth++;
-    super.visitKeyFrameBlock(node);
-    output.depth--;
-  }
-
-  void visitFontFaceDirective(FontFaceDirective node) {
-    // TODO(terry): To Be Implemented
-  }
-
-  void visitStyletDirective(StyletDirective node) {
-    heading('StyletDirective', node);
-    output.writeValue('dartClassName', node.dartClassName);
-    output.depth++;
-    output.writeNodeList('rulesets', node.rulesets);
-    output.depth--;
-  }
-
-  void visitNamespaceDirective(NamespaceDirective node) {
-    heading('NamespaceDirective', node);
-    output.depth++;
-    output.writeValue('prefix', node._prefix);
-    output.writeValue('uri', node._uri);
-    output.depth--;
-  }
-
-  void visitVarDefinitionDirective(VarDefinitionDirective node) {
-    heading('Less variable definition', node);
-    output.depth++;
-    visitVarDefinition(node.def);
-    output.depth--;
-  }
-
-  void visitMixinRulesetDirective(MixinRulesetDirective node) {
-    heading('Mixin top-level ${node.name}', node);
-    output.writeNodeList('parameters', node.definedArgs);
-    output.depth++;
-    _visitNodeList(node.rulesets);
-    output.depth--;
-  }
-
-  void visitMixinDeclarationDirective(MixinDeclarationDirective node) {
-    heading('Mixin declaration ${node.name}', node);
-    output.writeNodeList('parameters', node.definedArgs);
-    output.depth++;
-    visitDeclarationGroup(node.declarations);
-    output.depth--;
-  }
-
-  /**
-   * Added optional newLine for handling @include at top-level vs/ inside of
-   * a declaration group.
-   */
-  void visitIncludeDirective(IncludeDirective node) {
-    heading('IncludeDirective ${node.name}', node);
-    var flattened = node.args.expand((e) => e).toList();
-    output.writeNodeList('parameters', flattened);
-  }
-
-  void visitIncludeMixinAtDeclaration(IncludeMixinAtDeclaration node) {
-    heading('IncludeMixinAtDeclaration ${node.include.name}', node);
-    output.depth++;
-    visitIncludeDirective(node.include);
-    output.depth--;
-  }
-
-  void visitExtendDeclaration(ExtendDeclaration node) {
-    heading('ExtendDeclaration', node);
-    output.depth++;
-    _visitNodeList(node.selectors);
-    output.depth--;
-  }
-
-  void visitRuleSet(RuleSet node) {
-    heading('Ruleset', node);
-    output.depth++;
-    super.visitRuleSet(node);
-    output.depth--;
-  }
-
-  void visitDeclarationGroup(DeclarationGroup node) {
-    heading('DeclarationGroup', node);
-    output.depth++;
-    output.writeNodeList('declarations', node.declarations);
-    output.depth--;
-  }
-
-  void visitMarginGroup(MarginGroup node) {
-    heading('MarginGroup', node);
-    output.depth++;
-    output.writeValue('@directive', node.margin_sym);
-    output.writeNodeList('declarations', node.declarations);
-    output.depth--;
-  }
-
-  void visitDeclaration(Declaration node) {
-    heading('Declaration', node);
-    output.depth++;
-    if (node.isIE7) output.write('IE7 property');
-    output.write('property');
-    super.visitDeclaration(node);
-    output.writeNode('expression', node._expression);
-    if (node.important) {
-      output.writeValue('!important', 'true');
-    }
-    output.depth--;
-  }
-
-  void visitVarDefinition(VarDefinition node) {
-    heading('Var', node);
-    output.depth++;
-    output.write('defintion');
-    super.visitVarDefinition(node);
-    output.writeNode('expression', node._expression);
-    output.depth--;
-  }
-
-  void visitSelectorGroup(SelectorGroup node) {
-    heading('Selector Group', node);
-    output.depth++;
-    output.writeNodeList('selectors', node.selectors);
-    output.depth--;
-  }
-
-  void visitSelector(Selector node) {
-    heading('Selector', node);
-    output.depth++;
-    output.writeNodeList('simpleSelectorsSequences',
-        node.simpleSelectorSequences);
-    output.depth--;
-  }
-
-  void visitSimpleSelectorSequence(SimpleSelectorSequence node) {
-    heading('SimpleSelectorSequence', node);
-    output.depth++;
-    if (node.isCombinatorNone) {
-      output.writeValue('combinator', "NONE");
-    } else if (node.isCombinatorDescendant) {
-      output.writeValue('combinator', "descendant");
-    } else if (node.isCombinatorPlus) {
-      output.writeValue('combinator', "+");
-    } else if (node.isCombinatorGreater) {
-      output.writeValue('combinator', ">");
-    } else if (node.isCombinatorTilde) {
-      output.writeValue('combinator', "~");
-    } else {
-      output.writeValue('combinator', "ERROR UNKNOWN");
-    }
-
-    super.visitSimpleSelectorSequence(node);
-
-    output.depth--;
-  }
-
-  void visitNamespaceSelector(NamespaceSelector node) {
-    heading('Namespace Selector', node);
-    output.depth++;
-
-    super.visitNamespaceSelector(node);
-
-    visitSimpleSelector(node.nameAsSimpleSelector);
-    output.depth--;
-  }
-
-  void visitElementSelector(ElementSelector node) {
-    heading('Element Selector', node);
-    output.depth++;
-    super.visitElementSelector(node);
-    output.depth--;
-  }
-
-  void visitAttributeSelector(AttributeSelector node) {
-    heading('AttributeSelector', node);
-    output.depth++;
-    super.visitAttributeSelector(node);
-    String tokenStr = node.matchOperatorAsTokenString();
-    output.writeValue('operator', '${node.matchOperator()} (${tokenStr})');
-    output.writeValue('value', node.valueToString());
-    output.depth--;
-  }
-
-  void visitIdSelector(IdSelector node) {
-    heading('Id Selector', node);
-    output.depth++;
-    super.visitIdSelector(node);
-    output.depth--;
-  }
-
-  void visitClassSelector(ClassSelector node) {
-    heading('Class Selector', node);
-    output.depth++;
-    super.visitClassSelector(node);
-    output.depth--;
-  }
-
-  void visitPseudoClassSelector(PseudoClassSelector node) {
-    heading('Pseudo Class Selector', node);
-    output.depth++;
-    super.visitPseudoClassSelector(node);
-    output.depth--;
-  }
-
-  void visitPseudoElementSelector(PseudoElementSelector node) {
-    heading('Pseudo Element Selector', node);
-    output.depth++;
-    super.visitPseudoElementSelector(node);
-    output.depth--;
-  }
-
-  void visitPseudoClassFunctionSelector(PseudoClassFunctionSelector node) {
-    heading('Pseudo Class Function Selector', node);
-    output.depth++;
-    visitSelectorExpression(node.expression);
-    super.visitPseudoClassFunctionSelector(node);
-    output.depth--;
-  }
-
-  void visitPseudoElementFunctionSelector(PseudoElementFunctionSelector node) {
-    heading('Pseudo Element Function Selector', node);
-    output.depth++;
-    visitSelectorExpression(node.expression);
-    super.visitPseudoElementFunctionSelector(node);
-    output.depth--;
-  }
-
-  void visitSelectorExpression(SelectorExpression node) {
-    heading('Selector Expression', node);
-    output.depth++;
-    output.writeNodeList('expressions', node.expressions);
-    output.depth--;
-  }
-
-  void visitNegationSelector(NegationSelector node) {
-    super.visitNegationSelector(node);
-    output.depth++;
-    heading('Negation Selector', node);
-    output.writeNode('Negation arg', node.negationArg);
-    output.depth--;
-  }
-
-  void visitUnicodeRangeTerm(UnicodeRangeTerm node) {
-    heading('UnicodeRangeTerm', node);
-    output.depth++;
-    output.writeValue('1st value', node.first);
-    output.writeValue('2nd value', node.second);
-    output.depth--;
-  }
-
-  void visitLiteralTerm(LiteralTerm node) {
-    heading('LiteralTerm', node);
-    output.depth++;
-    output.writeValue('value', node.text);
-    output.depth--;
- }
-
-  void visitHexColorTerm(HexColorTerm node) {
-    heading('HexColorTerm', node);
-    output.depth++;
-    output.writeValue('hex value', node.text);
-    output.writeValue('decimal value', node.value);
-    output.depth--;
-  }
-
-  void visitNumberTerm(NumberTerm node) {
-    heading('NumberTerm', node);
-    output.depth++;
-    output.writeValue('value', node.text);
-    output.depth--;
-  }
-
-  void visitUnitTerm(UnitTerm node) {
-    String unitValue;
-
-    output.depth++;
-    output.writeValue('value', node.text);
-    output.writeValue('unit', node.unitToString());
-    output.depth--;
-  }
-
-  void visitLengthTerm(LengthTerm node) {
-    heading('LengthTerm', node);
-    super.visitLengthTerm(node);
-  }
-
-  void visitPercentageTerm(PercentageTerm node) {
-    heading('PercentageTerm', node);
-    output.depth++;
-    super.visitPercentageTerm(node);
-    output.depth--;
-  }
-
-  void visitEmTerm(EmTerm node) {
-    heading('EmTerm', node);
-    output.depth++;
-    super.visitEmTerm(node);
-    output.depth--;
-  }
-
-  void visitExTerm(ExTerm node) {
-    heading('ExTerm', node);
-    output.depth++;
-    super.visitExTerm(node);
-    output.depth--;
-  }
-
-  void visitAngleTerm(AngleTerm node) {
-    heading('AngleTerm', node);
-    super.visitAngleTerm(node);
-  }
-
-  void visitTimeTerm(TimeTerm node) {
-    heading('TimeTerm', node);
-    super.visitTimeTerm(node);
-  }
-
-  void visitFreqTerm(FreqTerm node) {
-    heading('FreqTerm', node);
-    super.visitFreqTerm(node);
-  }
-
-  void visitFractionTerm(FractionTerm node) {
-    heading('FractionTerm', node);
-    output.depth++;
-    super.visitFractionTerm(node);
-    output.depth--;
-  }
-
-  void visitUriTerm(UriTerm node) {
-    heading('UriTerm', node);
-    output.depth++;
-    super.visitUriTerm(node);
-    output.depth--;
-  }
-
-  void visitFunctionTerm(FunctionTerm node) {
-    heading('FunctionTerm', node);
-    output.depth++;
-    super.visitFunctionTerm(node);
-    output.depth--;
-  }
-
-  void visitGroupTerm(GroupTerm node) {
-    heading('GroupTerm', node);
-    output.depth++;
-    output.writeNodeList('grouped terms', node._terms);
-    output.depth--;
-  }
-
-  void visitItemTerm(ItemTerm node) {
-    heading('ItemTerm', node);
-    super.visitItemTerm(node);
-  }
-
-  void visitIE8Term(IE8Term node) {
-    heading('IE8Term', node);
-    visitLiteralTerm(node);
-  }
-
-  void visitOperatorSlash(OperatorSlash node) {
-    heading('OperatorSlash', node);
-  }
-
-  void visitOperatorComma(OperatorComma node) {
-    heading('OperatorComma', node);
-  }
-
-  void visitOperatorPlus(OperatorPlus node) {
-    heading('OperatorPlus', node);
-  }
-
-  void visitOperatorMinus(OperatorMinus node) {
-    heading('OperatorMinus', node);
-  }
-
-  void visitVarUsage(VarUsage node) {
-    heading('Var', node);
-    output.depth++;
-    output.write('usage ${node.name}');
-    output.writeNodeList('default values', node.defaultValues);
-    output.depth--;
-  }
-
-  void visitExpressions(Expressions node) {
-    heading('Expressions', node);
-    output.depth++;
-    output.writeNodeList('expressions', node.expressions);
-    output.depth--;
-  }
-
-  void visitBinaryExpression(BinaryExpression node) {
-    heading('BinaryExpression', node);
-    // TODO(terry): TBD
-  }
-
-  void visitUnaryExpression(UnaryExpression node) {
-    heading('UnaryExpression', node);
-    // TODO(terry): TBD
-  }
-
-  void visitIdentifier(Identifier node) {
-    heading('Identifier(${output.toValue(node.name)})', node);
-  }
-
-  void visitWildcard(Wildcard node) {
-    heading('Wildcard(*)', node);
-  }
-
-  void visitDartStyleExpression(DartStyleExpression node) {
-    heading('DartStyleExpression', node);
-  }
-
-  void visitFontExpression(FontExpression node) {
-    heading('Dart Style FontExpression', node);
-  }
-
-  void visitBoxExpression(BoxExpression node) {
-    heading('Dart Style BoxExpression', node);
-  }
-
-  void visitMarginExpression(MarginExpression node) {
-    heading('Dart Style MarginExpression', node);
-  }
-
-  void visitBorderExpression(BorderExpression node) {
-    heading('Dart Style BorderExpression', node);
-  }
-
-  void visitHeightExpression(HeightExpression node) {
-    heading('Dart Style HeightExpression', node);
-  }
-
-  void visitPaddingExpression(PaddingExpression node) {
-    heading('Dart Style PaddingExpression', node);
-  }
-
-  void visitWidthExpression(WidthExpression node) {
-    heading('Dart Style WidthExpression', node);
-  }
-}