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

pkg/csslib/lib/visitor.dart

-// Copyright (c) 2012, 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.
-
-library csslib.visitor;
-
-import 'package:source_span/source_span.dart';
-import 'parser.dart';
-
-part 'src/css_printer.dart';
-part 'src/tree.dart';
-part 'src/tree_base.dart';
-part 'src/tree_printer.dart';
-
-abstract class VisitorBase {
-  void visitCssComment(CssComment node);
-  void visitCommentDefinition(CommentDefinition node);
-  void visitStyleSheet(StyleSheet node);
-  void visitNoOp(NoOp node);
-  void visitTopLevelProduction(TopLevelProduction node);
-  void visitDirective(Directive node);
-  void visitMediaExpression(MediaExpression node);
-  void visitMediaQuery(MediaQuery node);
-  void visitMediaDirective(MediaDirective node);
-  void visitHostDirective(HostDirective node);
-  void visitPageDirective(PageDirective node);
-  void visitCharsetDirective(CharsetDirective node);
-  void visitImportDirective(ImportDirective node);
-  void visitKeyFrameDirective(KeyFrameDirective node);
-  void visitKeyFrameBlock(KeyFrameBlock node);
-  void visitFontFaceDirective(FontFaceDirective node);
-  void visitStyletDirective(StyletDirective node);
-  void visitNamespaceDirective(NamespaceDirective node);
-  void visitVarDefinitionDirective(VarDefinitionDirective node);
-  void visitMixinDefinition(MixinDefinition node);
-  void visitMixinRulesetDirective(MixinRulesetDirective node);
-  void visitMixinDeclarationDirective(MixinDeclarationDirective node);
-  void visitIncludeDirective(IncludeDirective node);
-  void visitContentDirective(ContentDirective node);
-
-  void visitRuleSet(RuleSet node);
-  void visitDeclarationGroup(DeclarationGroup node);
-  void visitMarginGroup(DeclarationGroup node);
-  void visitDeclaration(Declaration node);
-  void visitVarDefinition(VarDefinition node);
-  void visitIncludeMixinAtDeclaration(IncludeMixinAtDeclaration node);
-  void visitExtendDeclaration(ExtendDeclaration node);
-  void visitSelectorGroup(SelectorGroup node);
-  void visitSelector(Selector node);
-  void visitSimpleSelectorSequence(SimpleSelectorSequence node);
-  void visitSimpleSelector(SimpleSelector node);
-  void visitElementSelector(ElementSelector node);
-  void visitNamespaceSelector(NamespaceSelector node);
-  void visitAttributeSelector(AttributeSelector node);
-  void visitIdSelector(IdSelector node);
-  void visitClassSelector(ClassSelector node);
-  void visitPseudoClassSelector(PseudoClassSelector node);
-  void visitPseudoElementSelector(PseudoElementSelector node);
-  void visitPseudoClassFunctionSelector(PseudoClassFunctionSelector node);
-  void visitPseudoElementFunctionSelector(PseudoElementFunctionSelector node);
-  void visitNegationSelector(NegationSelector node);
-  void visitSelectorExpression(SelectorExpression node);
-
-  void visitUnicodeRangeTerm(UnicodeRangeTerm node);
-  void visitLiteralTerm(LiteralTerm node);
-  void visitHexColorTerm(HexColorTerm node);
-  void visitNumberTerm(NumberTerm node);
-  void visitUnitTerm(UnitTerm node);
-  void visitLengthTerm(LengthTerm node);
-  void visitPercentageTerm(PercentageTerm node);
-  void visitEmTerm(EmTerm node);
-  void visitExTerm(ExTerm node);
-  void visitAngleTerm(AngleTerm node);
-  void visitTimeTerm(TimeTerm node);
-  void visitFreqTerm(FreqTerm node);
-  void visitFractionTerm(FractionTerm node);
-  void visitUriTerm(UriTerm node);
-  void visitResolutionTerm(ResolutionTerm node);
-  void visitChTerm(ChTerm node);
-  void visitRemTerm(RemTerm node);
-  void visitViewportTerm(ViewportTerm node);
-  void visitFunctionTerm(FunctionTerm node);
-  void visitGroupTerm(GroupTerm node);
-  void visitItemTerm(ItemTerm node);
-  void visitIE8Term(IE8Term node);
-  void visitOperatorSlash(OperatorSlash node);
-  void visitOperatorComma(OperatorComma node);
-  void visitOperatorPlus(OperatorPlus node);
-  void visitOperatorMinus(OperatorMinus node);
-  void visitVarUsage(VarUsage node);
-
-  void visitExpressions(Expressions node);
-  void visitBinaryExpression(BinaryExpression node);
-  void visitUnaryExpression(UnaryExpression node);
-
-  void visitIdentifier(Identifier node);
-  void visitWildcard(Wildcard node);
-  void visitThisOperator(ThisOperator node);
-  void visitNegation(Negation node);
-
-  void visitDartStyleExpression(DartStyleExpression node);
-  void visitFontExpression(FontExpression node);
-  void visitBoxExpression(BoxExpression node);
-  void visitMarginExpression(MarginExpression node);
-  void visitBorderExpression(BorderExpression node);
-  void visitHeightExpression(HeightExpression node);
-  void visitPaddingExpression(PaddingExpression node);
-  void visitWidthExpression(WidthExpression node);
-}
-
-/** Base vistor class for the style sheet AST. */
-class Visitor implements VisitorBase {
-  /** Helper function to walk a list of nodes. */
-  void _visitNodeList(List<TreeNode> list) {
-    // Don't use iterable otherwise the list can't grow while using Visitor.
-    // It certainly can't have items deleted before the index being iterated
-    // but items could be added after the index.
-    for (var index = 0; index < list.length; index++) {
-      list[index].visit(this);
-    }
-  }
-
-  void visitTree(StyleSheet tree) => visitStyleSheet(tree);
-
-  void visitStyleSheet(StyleSheet ss) {
-    _visitNodeList(ss.topLevels);
-  }
-
-  void visitNoOp(NoOp node) { }
-
-  void visitTopLevelProduction(TopLevelProduction node) { }
-
-  void visitDirective(Directive node) { }
-
-  void visitCssComment(CssComment node) { }
-
-  void visitCommentDefinition(CommentDefinition node) { }
-
-  void visitMediaExpression(MediaExpression node) {
-    visitExpressions(node.exprs);
-  }
-
-  void visitMediaQuery(MediaQuery node) {
-    for (var mediaExpr in node.expressions) {
-      visitMediaExpression(mediaExpr);
-    }
-  }
-
-  void visitMediaDirective(MediaDirective node) {
-    for (var mediaQuery in node.mediaQueries) {
-      visitMediaQuery(mediaQuery);
-    }
-    for (var ruleset in node.rulesets) {
-      visitRuleSet(ruleset);
-    }
-  }
-
-  void visitHostDirective(HostDirective node) {
-    for (var ruleset in node.rulesets) {
-      visitRuleSet(ruleset);
-    }
-  }
-
-  void visitPageDirective(PageDirective node) {
-    for (var declGroup in node._declsMargin) {
-      if (declGroup is MarginGroup) {
-        visitMarginGroup(declGroup);
-      } else {
-        visitDeclarationGroup(declGroup);
-      }
-    }
-  }
-
-  void visitCharsetDirective(CharsetDirective node) { }
-
-  void visitImportDirective(ImportDirective node) {
-    for (var mediaQuery in node.mediaQueries) {
-      visitMediaQuery(mediaQuery);
-    }
-  }
-
-  void visitKeyFrameDirective(KeyFrameDirective node) {
-    visitIdentifier(node.name);
-    _visitNodeList(node._blocks);
-  }
-
-  void visitKeyFrameBlock(KeyFrameBlock node) {
-    visitExpressions(node._blockSelectors);
-    visitDeclarationGroup(node._declarations);
-  }
-
-  void visitFontFaceDirective(FontFaceDirective node) {
-    visitDeclarationGroup(node._declarations);
-  }
-
-  void visitStyletDirective(StyletDirective node) {
-    _visitNodeList(node.rulesets);
-  }
-
-  void visitNamespaceDirective(NamespaceDirective node) { }
-
-  void visitVarDefinitionDirective(VarDefinitionDirective node) {
-    visitVarDefinition(node.def);
-  }
-
-  void visitMixinRulesetDirective(MixinRulesetDirective node) {
-    _visitNodeList(node.rulesets);
-  }
-
-  void visitMixinDefinition(MixinDefinition node) { }
-
-  void visitMixinDeclarationDirective(MixinDeclarationDirective node) {
-    visitDeclarationGroup(node.declarations);
-  }
-
-  void visitIncludeDirective(IncludeDirective node) {
-    for (var index = 0; index < node.args.length; index++) {
-      var param = node.args[index];
-      _visitNodeList(param);
-    }
-  }
-
-  void visitContentDirective(ContentDirective node) {
-    // TODO(terry): TBD
-  }
-
-  void visitRuleSet(RuleSet node) {
-    visitSelectorGroup(node._selectorGroup);
-    visitDeclarationGroup(node._declarationGroup);
-  }
-
-  void visitDeclarationGroup(DeclarationGroup node) {
-    _visitNodeList(node.declarations);
-  }
-
-  void visitMarginGroup(MarginGroup node) => visitDeclarationGroup(node);
-
-  void visitDeclaration(Declaration node) {
-    visitIdentifier(node._property);
-    if (node._expression != null) node._expression.visit(this);
-  }
-
-  void visitVarDefinition(VarDefinition node) {
-    visitIdentifier(node._property);
-    if (node._expression != null) node._expression.visit(this);
-  }
-
-  void visitIncludeMixinAtDeclaration(IncludeMixinAtDeclaration node) {
-    visitIncludeDirective(node.include);
-  }
-
-  void visitExtendDeclaration(ExtendDeclaration node) {
-    _visitNodeList(node.selectors);
-  }
-
-  void visitSelectorGroup(SelectorGroup node) {
-    _visitNodeList(node.selectors);
-  }
-
-  void visitSelector(Selector node) {
-    _visitNodeList(node.simpleSelectorSequences);
-  }
-
-  void visitSimpleSelectorSequence(SimpleSelectorSequence node) {
-    node.simpleSelector.visit(this);
-  }
-
-  void visitSimpleSelector(SimpleSelector node) => node._name.visit(this);
-
-  void visitNamespaceSelector(NamespaceSelector node) {
-    if (node._namespace != null) node._namespace.visit(this);
-    if (node.nameAsSimpleSelector != null) {
-      node.nameAsSimpleSelector.visit(this);
-    }
-  }
-
-  void visitElementSelector(ElementSelector node) => visitSimpleSelector(node);
-
-  void visitAttributeSelector(AttributeSelector node) {
-    visitSimpleSelector(node);
-  }
-
-  void visitIdSelector(IdSelector node) => visitSimpleSelector(node);
-
-  void visitClassSelector(ClassSelector node) => visitSimpleSelector(node);
-
-  void visitPseudoClassSelector(PseudoClassSelector node) =>
-      visitSimpleSelector(node);
-
-  void visitPseudoElementSelector(PseudoElementSelector node) =>
-      visitSimpleSelector(node);
-
-  void visitPseudoClassFunctionSelector(PseudoClassFunctionSelector node) =>
-      visitSimpleSelector(node);
-
-  void visitPseudoElementFunctionSelector(PseudoElementFunctionSelector node) =>
-      visitSimpleSelector(node);
-
-  void visitNegationSelector(NegationSelector node) =>
-      visitSimpleSelector(node);
-
-  void visitSelectorExpression(SelectorExpression node) {
-    _visitNodeList(node.expressions);
-  }
-
-  void visitUnicodeRangeTerm(UnicodeRangeTerm node) { }
-
-  void visitLiteralTerm(LiteralTerm node) { }
-
-  void visitHexColorTerm(HexColorTerm node) { }
-
-  void visitNumberTerm(NumberTerm node) { }
-
-  void visitUnitTerm(UnitTerm node) { }
-
-  void visitLengthTerm(LengthTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitPercentageTerm(PercentageTerm node) {
-    visitLiteralTerm(node);
-  }
-
-  void visitEmTerm(EmTerm node) {
-    visitLiteralTerm(node);
-  }
-
-  void visitExTerm(ExTerm node) {
-    visitLiteralTerm(node);
-  }
-
-  void visitAngleTerm(AngleTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitTimeTerm(TimeTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitFreqTerm(FreqTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitFractionTerm(FractionTerm node) {
-    visitLiteralTerm(node);
-  }
-
-  void visitUriTerm(UriTerm node) {
-    visitLiteralTerm(node);
-  }
-
-  void visitResolutionTerm(ResolutionTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitChTerm(ChTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitRemTerm(RemTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitViewportTerm(ViewportTerm node) {
-    visitUnitTerm(node);
-  }
-
-  void visitFunctionTerm(FunctionTerm node) {
-    visitLiteralTerm(node);
-    visitExpressions(node._params);
-  }
-
-  void visitGroupTerm(GroupTerm node) {
-    for (var term in node._terms) {
-      term.visit(this);
-    }
-  }
-
-  void visitItemTerm(ItemTerm node) {
-    visitNumberTerm(node);
-  }
-
-  void visitIE8Term(IE8Term node) { }
-
-  void visitOperatorSlash(OperatorSlash node) { }
-
-  void visitOperatorComma(OperatorComma node) { }
-
-  void visitOperatorPlus(OperatorPlus node) { }
-
-  void visitOperatorMinus(OperatorMinus node) { }
-
-  void visitVarUsage(VarUsage node) {
-    _visitNodeList(node.defaultValues);
-  }
-
-  void visitExpressions(Expressions node) {
-    _visitNodeList(node.expressions);
-  }
-
-  void visitBinaryExpression(BinaryExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitUnaryExpression(UnaryExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitIdentifier(Identifier node) { }
-
-  void visitWildcard(Wildcard node) { }
-
-  void visitThisOperator(ThisOperator node) { }
-
-  void visitNegation(Negation node) { }
-
-  void visitDartStyleExpression(DartStyleExpression node) { }
-
-  void visitFontExpression(FontExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitBoxExpression(BoxExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitMarginExpression(MarginExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitBorderExpression(BorderExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitHeightExpression(HeightExpression node) {
-    // TODO(terry): TB
-    throw UnimplementedError;
-  }
-
-  void visitPaddingExpression(PaddingExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-
-  void visitWidthExpression(WidthExpression node) {
-    // TODO(terry): TBD
-    throw UnimplementedError;
-  }
-}