Example usage for com.google.common.css.compiler.ast CssTree getVisitController

Introduction

In this page you can find the example usage for com.google.common.css.compiler.ast CssTree getVisitController.

Prototype

public VisitController getVisitController() 

Source Link

Usage

From source file:com.log4ic.compressor.utils.Compressor.java

public static String parseGss(JobDescription job) throws GssParserException {
    logger.debug("?GSS...");
    try {// w  ww.  j  a  v a 2 s.  c o m
        GssParser parser = new GssParser(job.inputs);
        CssTree cssTree = parser.parse();
        CompilerErrorManager errorManager = new CompilerErrorManager();
        PassRunner passRunner = new ExtendedPassRunner(job, errorManager);
        passRunner.runPasses(cssTree);
        PrettyPrinter prettyPrinterPass = new PrettyPrinter(cssTree.getVisitController());
        prettyPrinterPass.runPass();
        return prettyPrinterPass.getPrettyPrintedString();
    } finally {
        logger.debug("?GSS...");
    }
}

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From source file:io.bazel.rules.closure.webfiles.WebfilesValidator.java

private void validateCss(final Path path, final Webpath origin, String source) {
    CssTree stylesheet = cssParser.parse(path.toString(), source);
    new PassRunner(new JobDescriptionBuilder().getJobDescription(), new BasicErrorManager() {
        @Override//from w w  w. j  a v a2s .  c o  m
        public void print(String message) {
            WebfilesValidator.this.errors.put(CSS_VALIDATION_ERROR, String.format("%s: %s", path, message));
        }
    }).runPasses(stylesheet);
    stylesheet.getVisitController().startVisit(new DefaultTreeVisitor() {
        private boolean inUrlFunction;

        @Override
        public boolean enterFunctionNode(CssFunctionNode function) {
            return (inUrlFunction = function.getFunction().getFunctionName().equals("url"));
        }

        @Override
        public void leaveFunctionNode(CssFunctionNode value) {
            inUrlFunction = false;
        }

        @Override
        public boolean enterArgumentNode(CssValueNode argument) {
            if (inUrlFunction) {
                String uri = nullToEmpty(argument.getValue());
                if (!shouldIgnoreUri(uri)) {
                    addRelationship(path, origin, Webpath.get(uri));
                }
            }
            return false;
        }
    });
}

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From source file:com.log4ic.compressor.utils.Compressor.java

/**
 * css/*  www .j  av  a  2  s  . c o  m*/
 *
 * @param job
 * @return
 * @throws GssParserException
 */
public static String compressGss(JobDescription job) throws GssParserException {
    logger.debug("CSS...");
    try {
        GssParser parser = new GssParser(job.inputs);
        CssTree cssTree = parser.parse();
        if (job.outputFormat != JobDescription.OutputFormat.DEBUG) {
            CompilerErrorManager errorManager = new CompilerErrorManager();
            PassRunner passRunner = new ExtendedPassRunner(job, errorManager);
            passRunner.runPasses(cssTree);
        }

        if (job.outputFormat == JobDescription.OutputFormat.COMPRESSED) {
            CompactPrinter compactPrinterPass = new CompactPrinter(cssTree);
            compactPrinterPass.runPass();
            return compactPrinterPass.getCompactPrintedString();
        } else {
            PrettyPrinter prettyPrinterPass = new PrettyPrinter(cssTree.getVisitController());
            prettyPrinterPass.runPass();
            return prettyPrinterPass.getPrettyPrintedString();
        }
    } finally {
        logger.debug("CSS...");
    }
}

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From source file:com.google.gwt.resources.rg.GssResourceGenerator.java

private OptimizationInfo optimize(ExtendedCssTree extendedCssTree, ResourceContext context, boolean simplifyCss,
        boolean eliminateDeadStyles) throws UnableToCompleteException {
    CssTree cssTree = extendedCssTree.getCssTree();

    // Collect mixin definitions and replace mixins
    CollectMixinDefinitions collectMixinDefinitions = new CollectMixinDefinitions(
            cssTree.getMutatingVisitController(), errorManager);
    collectMixinDefinitions.runPass();/*ww  w. j  ava2  s. co  m*/
    new ReplaceMixins(cssTree.getMutatingVisitController(), errorManager,
            collectMixinDefinitions.getDefinitions()).runPass();

    new ProcessComponents<Object>(cssTree.getMutatingVisitController(), errorManager).runPass();

    RuntimeConditionalNodeCollector runtimeConditionalNodeCollector = new RuntimeConditionalNodeCollector(
            cssTree.getVisitController());
    runtimeConditionalNodeCollector.runPass();

    new ExtendedEliminateConditionalNodes(cssTree.getMutatingVisitController(),
            getPermutationsConditions(context, extendedCssTree.getPermutationAxes()),
            runtimeConditionalNodeCollector.getRuntimeConditionalNodes()).runPass();

    new DisallowDefInsideRuntimeConditionalNode(cssTree.getVisitController(), errorManager).runPass();

    // Don't continue if errors exist
    checkErrors();

    CollectConstantDefinitions collectConstantDefinitionsPass = new CollectConstantDefinitions(cssTree);
    collectConstantDefinitionsPass.runPass();

    ReplaceConstantReferences replaceConstantReferences = new ReplaceConstantReferences(cssTree,
            collectConstantDefinitionsPass.getConstantDefinitions(), true, errorManager, false);
    replaceConstantReferences.runPass();

    new ImageSpriteCreator(cssTree.getMutatingVisitController(), context, errorManager).runPass();

    Map<String, GssFunction> gssFunctionMap = new GwtGssFunctionMapProvider(context).get();
    new ResolveCustomFunctionNodes(cssTree.getMutatingVisitController(), errorManager, gssFunctionMap, true,
            allowedNonStandardFunctions).runPass();

    if (simplifyCss) {
        // Eliminate empty rules.
        new EliminateEmptyRulesetNodes(cssTree.getMutatingVisitController()).runPass();
        // Eliminating units for zero values.
        new EliminateUnitsFromZeroNumericValues(cssTree.getMutatingVisitController()).runPass();
        // Optimize color values.
        new ColorValueOptimizer(cssTree.getMutatingVisitController()).runPass();
        // Compress redundant top-right-bottom-left value lists.
        new AbbreviatePositionalValues(cssTree.getMutatingVisitController()).runPass();
    }

    if (eliminateDeadStyles) {
        // Report errors for duplicate declarations
        new DisallowDuplicateDeclarations(cssTree.getVisitController(), errorManager).runPass();
        // Split rules by selector and declaration.
        new SplitRulesetNodes(cssTree.getMutatingVisitController()).runPass();
        // Dead code elimination.
        new MarkRemovableRulesetNodes(cssTree).runPass();
        new EliminateUselessRulesetNodes(cssTree).runPass();
        // Merge of rules with same selector.
        new MergeAdjacentRulesetNodesWithSameSelector(cssTree).runPass();
        new EliminateUselessRulesetNodes(cssTree).runPass();
        // Merge of rules with same styles.
        new MergeAdjacentRulesetNodesWithSameDeclarations(cssTree).runPass();
        new EliminateUselessRulesetNodes(cssTree).runPass();
    }

    return new OptimizationInfo(collectConstantDefinitionsPass.getConstantDefinitions());
}

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