Package com.bazaarvoice.jless.ast.node

Examples of com.bazaarvoice.jless.ast.node.ScopeNode

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                RuleSetNode propertyRuleSet = new RuleSetNode();
                propertyRuleSet.addChild(NodeTreeUtils.filterLineBreaks(_parentSelectorGroup.clone()));

                // Move all the properties into this new rule set
                List<Node> propertyNodes = new ArrayList<Node>(_parentScope.getChildren().subList(group.getStart(), group.getEnd() + 1));
                propertyRuleSet.addChild(new ScopeNode(propertyNodes));

                // Insert the property rule set
                _parentScope.addChild(group.getStart(), propertyRuleSet);
            }
        }
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     * This is the high-level rule at some scope (either the root document or within a rule set / mixin).
     * Future: Imports
     */
    Rule Scope() {
        return Sequence(
                push(new ScopeNode()),
                ZeroOrMore(
                        FirstOf(
                                Declaration(),
                                MediaQuery(),
                                RuleSet(),
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                ZeroOrMore(
                        ',', Ws0(),
                        Parameter(), peek(1).addChild(pop())
                ),
                ')',
                push(new ScopeNode(pop()))
        );
    }
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        for (Node node : getContext().getValueStack()) {
            if (!(node instanceof ScopeNode)) {
                continue;
            }

            ScopeNode scope = (ScopeNode) node;
            RuleSetNode ruleSet = scope.getRuleSet(name);

            if (ruleSet == null) {
                continue;
            }

            // Get the scope of the rule set we located and call it as a mixin
            ScopeNode ruleSetScope = NodeTreeUtils.getFirstChild(ruleSet, ScopeNode.class).callMixin(name, arguments);

            return push(ruleSetScope);
        }

        // Record error location
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            if (!(node instanceof ScopeNode)) {
                continue;
            }

            // Ensure that the variable exists
            ScopeNode scope = (ScopeNode) node;
            if (!scope.isVariableDefined(name)) {
                continue;
            }

            return push(new VariableReferenceNode(name));
        }
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        return found;
    }

    public static ScopeNode getParentScope(Node node) {
        if (node instanceof ScopeNode) {
            ScopeNode parentScope = ((ScopeNode) node).getParentScope();
            if (parentScope != null) {
                return parentScope;
            }
        }
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     */
    public Result process(Result parent, InputStream input) throws IOException {
        ValueStack<Node> stack = new DefaultValueStack<Node>();

        // Make the scope of each parent result accessible for variable and mixin resolution during parsing
        ScopeNode parentScope = null;
        if (parent != null) {
            parentScope = parent.getScope();
            stack.push(parentScope);
        }

        // Parse the input
        ParseRunner<Node> parseRunner = new ReportingParseRunner<Node>(Parboiled.createParser(Parser.class, _translationEnabled).Document()).withValueStack(stack);
        ParsingResult<Node> result = parseRunner.run(IOUtils.toString(input, "UTF-8"));

        if (result.hasErrors()) {
            throw new LessTranslationException("An error occurred while parsing a LESS input file:\n" +
                    ErrorUtils.printParseErrors(result));
        }

        // Retrieve the processed result
        ScopeNode scope = (ScopeNode) stack.pop();

        // Link the new scope to the last parent for later variable resolution
        if (parentScope != null) {
            scope.setParentScope(parentScope);
        }

        return new Result(scope);
    }
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    @Override
    public boolean enter(RuleSetNode ruleSet) {
        if (_compress) {
            // Check if the inner scope contains nodes
            ScopeNode scope = NodeTreeUtils.getFirstChild(ruleSet, ScopeNode.class);
            return !scope.getChildren().isEmpty();
        }
        return super.enter(ruleSet);
    }
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     * the same selectors as has input RuleSetNode
     */
    @Override
    public boolean enter(RuleSetNode ruleSetNode) {

        ScopeNode scopeNode = NodeTreeUtils.getFirstChild(ruleSetNode, ScopeNode.class);
        SelectorGroupNode selectorGroupNode = NodeTreeUtils.getFirstChild(ruleSetNode, SelectorGroupNode.class);

        if (selectorGroupNode == null) {
            return true;
        }

        List<SelectorNode> selectorNodes = NodeTreeUtils.getChildren(selectorGroupNode, SelectorNode.class);

        if (selectorNodes.size() < 0) {
            return true;
        }

        List<MediaQueryNode> mediaQueryNodes = NodeTreeUtils.getAndRemoveChildren(scopeNode, MediaQueryNode.class);

        for (MediaQueryNode mediaQueryNode : mediaQueryNodes) {
            ScopeNode mediaScopeNode = NodeTreeUtils.getFirstChild(mediaQueryNode, ScopeNode.class);

            List<RuleSetNode> nestedRuleSets = NodeTreeUtils.getAndRemoveChildren(mediaScopeNode, RuleSetNode.class);

            // if scope node for media query has anything more but whitespaces and rule sets than wrap it with rule set with the same selector group as outer rule set has
            if (mediaScopeNode.getChildren().size() > NodeTreeUtils.getChildren(mediaScopeNode, WhiteSpaceCollectionNode.class).size()) {
                RuleSetNode newRuleSetNode = new RuleSetNode();
                ScopeNode newScopeNode = new ScopeNode();
                newRuleSetNode.addChild(selectorGroupNode.clone());
                newRuleSetNode.addChild(newScopeNode);

                NodeTreeUtils.moveChildren(mediaScopeNode, newScopeNode);

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Related Classes of com.bazaarvoice.jless.ast.node.ScopeNode

  • com.bazaarvoice.jless.ast.util.NodeTreeUtils
  • com.bazaarvoice.jless.ast.visitor.FlattenNestedRuleSets$NestedRuleSetVisitor
  • com.bazaarvoice.jless.ast.visitor.InclusiveNodeVisitor
  • com.bazaarvoice.jless.ast.visitor.NestedMediaQueries
  • com.bazaarvoice.jless.ast.visitor.Printer
  • com.bazaarvoice.jless.LessProcessor
  • com.bazaarvoice.jless.parser.Parser
  • com.bazaarvoice.jless.exception.IllegalMixinArgumentException
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