Examples of com.google.caja.lang.css.CssPropertyPatterns

com.google.caja.lang.css.CssPropertyPatterns
of allowed literal tokens. var CSS_LIT_GROUP = [["auto",...],...]; var CSS_REGEX = [/^...$/]; var cssSchema = { "float": { // Describe the kinds of tokens that can appear in the named // property's value and any additional restrictions. cssPropBits: CSS_PROP_BIT_x | CSS_PROP_BIT_y | ..., // Groups of literal values allowed including keywords and specific // numeric values like font-weight:300 cssLitGroup: [CSS_LIT_GROUP[1],CSS_LIT_GROUP[3],CSS_LIT_GROUP[16]], // Schema keys for functions that are allowed (non-transitively). cssFns: [] }, ... // Functions are top-level constructs that have their own filters which // can be applied to their actuals. "rgba()": { ... }, ... };
Program Flow

This class examines a schema and builds a list of all allowed CSS properties, * and each function. It then tries to deduce for each property value and function the set of keywords/literal token values, how to interpret quoted strings, and what to do with loose identifiers that do not match a known keyword.
Once it has collections of keywords/literal-tokens, it tries to group commonly co-occuring literal-tokens together to reduce download size. Finally, it identifies patterns like {@code border-top} and{@code border-bottom} which have identical results.
Finally it builds a javascript parse tree that assigns the {@code css}namespace to an object whose keys are CSS property names, and whose values are data maps similar to the example code above.
"sanitize-css.js" uses this map extensively to sanitize & normalize CSS properties, rewriting URIs as needed. @author mikesamuel@gmail.com

  CssPropertyPatterns pp;


  @Override
  public void setUp() throws Exception {
    super.setUp();
    pp = new CssPropertyPatterns(CssSchema.getDefaultCss21Schema(mq));
  }

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    assertDigest("[ foo | [ a || b || c || d ] | bar ]",
                 "{\n  'lits': [ 'a', 'b', 'bar', 'c', 'd', 'foo' ]\n}");
  }


  public final void testLiteralExtraction() {
    CssPropertyPatterns pp = new CssPropertyPatterns(
        CssSchema.getDefaultCss21Schema(mq));
    String text = "[ foo || bar() ]";
    CssPropertyData actual = pp.cssPropertyToData("test", parseSignature(text));
    assertEquals("test", actual.key);
    assertEquals(actual.fns.toString(), 1, actual.fns.size());
    assertEquals("bar", actual.fns.iterator().next().getName());


  }

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   */
  private void fixTerms(AncestorChain<? extends CssTree> t) {
    SymbolInfo stdColors = cssSchema.getSymbol(Name.css("color-standard"));
    final Pattern stdColorMatcher;
    if (stdColors != null) {
      stdColorMatcher = new CssPropertyPatterns(cssSchema)
          .cssPropertyToJavaRegex(stdColors.sig);
    } else {
      stdColorMatcher = null;
    }
    t.node.visitPreOrder(new ParseTreeNodeVisitor() {

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            + "}",
            getName()));
}


  private String toPattern(String sig) {
    CssPropertyPatterns pp = new CssPropertyPatterns(
        CssSchema.getDefaultCss21Schema(mq));
    return pp.cssPropertyToPattern(parseSignature(sig), true).regex;
  }

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   */
  private void fixTerms(AncestorChain<? extends CssTree> t) {
    SymbolInfo stdColors = schema.getSymbol(Name.css("color-standard"));
    final Pattern stdColorMatcher;
    if (stdColors != null) {
      stdColorMatcher = new CssPropertyPatterns(schema)
          .cssPropertyToJavaRegex(stdColors.sig);
    } else {
      stdColorMatcher = null;
    }
    t.node.visitPreOrder(new ParseTreeNodeVisitor() {

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com.google.caja.lang.css.CssPropertyPatternsTest

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com.google.caja.parser.css.CssPropertySignature

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com.google.caja.parser.js.Declaration

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Examples of com.google.caja.lang.css.CssPropertyPatterns

Program Flow

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