feat(core): ensure CSS parser tracks start/end values and understands complex pseudo selectors

This commit is contained in:
Matias Niemelä 2016-06-14 16:26:57 -07:00
parent e0c1c13004
commit 935c39a7e2
6 changed files with 748 additions and 281 deletions

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@ -1,9 +1,9 @@
import {$$, $0, $9, $A, $AMPERSAND, $AT, $BACKSLASH, $BANG, $CARET, $COLON, $COMMA, $CR, $DQ, $EOF, $EQ, $FF, $GT, $HASH, $LBRACE, $LBRACKET, $LF, $LPAREN, $MINUS, $PERCENT, $PERIOD, $PIPE, $PLUS, $QUESTION, $RBRACE, $RBRACKET, $RPAREN, $SEMICOLON, $SLASH, $SQ, $STAR, $TILDA, $VTAB, $Z, $_, $a, $z, isWhitespace} from '@angular/compiler/src/chars';
import {$$, $0, $9, $A, $AMPERSAND, $AT, $BACKSLASH, $BANG, $CARET, $COLON, $COMMA, $CR, $DQ, $EOF, $EQ, $FF, $GT, $HASH, $LBRACE, $LBRACKET, $LF, $LPAREN, $MINUS, $PERCENT, $PERIOD, $PIPE, $PLUS, $QUESTION, $RBRACE, $RBRACKET, $RPAREN, $SEMICOLON, $SLASH, $SQ, $STAR, $TILDA, $VTAB, $Z, $_, $a, $z, isWhitespace} from '../chars';
import {BaseException} from '../facade/exceptions';
import {NumberWrapper, StringWrapper, isPresent, resolveEnumToken} from '../facade/lang';
import {StringWrapper, isPresent, resolveEnumToken} from '../facade/lang';
export {$AT, $COLON, $COMMA, $EOF, $LBRACE, $LBRACKET, $LPAREN, $RBRACE, $RBRACKET, $RPAREN, $SEMICOLON, isWhitespace} from '@angular/compiler/src/chars';
export {$AT, $COLON, $COMMA, $EOF, $GT, $LBRACE, $LBRACKET, $LPAREN, $PLUS, $RBRACE, $RBRACKET, $RPAREN, $SEMICOLON, $SLASH, $SPACE, $TAB, $TILDA, isWhitespace} from '../chars';
export enum CssTokenType {
EOF,
@ -23,6 +23,7 @@ export enum CssLexerMode {
ALL_TRACK_WS,
SELECTOR,
PSEUDO_SELECTOR,
PSEUDO_SELECTOR_WITH_ARGUMENTS,
ATTRIBUTE_SELECTOR,
AT_RULE_QUERY,
MEDIA_QUERY,
@ -94,6 +95,7 @@ export class CssScannerError extends BaseException {
function _trackWhitespace(mode: CssLexerMode) {
switch (mode) {
case CssLexerMode.SELECTOR:
case CssLexerMode.PSEUDO_SELECTOR:
case CssLexerMode.ALL_TRACK_WS:
case CssLexerMode.STYLE_VALUE:
return true;
@ -126,7 +128,7 @@ export class CssScanner {
setMode(mode: CssLexerMode) {
if (this._currentMode != mode) {
if (_trackWhitespace(this._currentMode)) {
if (_trackWhitespace(this._currentMode) && !_trackWhitespace(mode)) {
this.consumeWhitespace();
}
this._currentMode = mode;
@ -178,21 +180,25 @@ export class CssScanner {
consume(type: CssTokenType, value: string = null): LexedCssResult {
var mode = this._currentMode;
this.setMode(CssLexerMode.ALL);
this.setMode(_trackWhitespace(mode) ? CssLexerMode.ALL_TRACK_WS : CssLexerMode.ALL);
var previousIndex = this.index;
var previousLine = this.line;
var previousColumn = this.column;
var next: CssToken;
var output = this.scan();
if (isPresent(output)) {
// just incase the inner scan method returned an error
if (isPresent(output.error)) {
this.setMode(mode);
return output;
}
// just incase the inner scan method returned an error
if (isPresent(output.error)) {
this.setMode(mode);
return output;
next = output.token;
}
var next = output.token;
if (!isPresent(next)) {
next = new CssToken(0, 0, 0, CssTokenType.EOF, 'end of file');
}
@ -563,6 +569,8 @@ function isValidSelectorCharacter(code: number): boolean {
case $COLON:
case $PIPE:
case $COMMA:
case $LBRACKET:
case $RBRACKET:
return true;
default:
return false;
@ -658,7 +666,7 @@ function isValidCssCharacter(code: number, mode: CssLexerMode): boolean {
case CssLexerMode.SELECTOR:
return isValidSelectorCharacter(code);
case CssLexerMode.PSEUDO_SELECTOR:
case CssLexerMode.PSEUDO_SELECTOR_WITH_ARGUMENTS:
return isValidPseudoSelectorCharacter(code);
case CssLexerMode.ATTRIBUTE_SELECTOR:

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@ -331,34 +331,19 @@ export function main() {
describe('Pseudo Selector Mode', () => {
it('should validate pseudo selector identifiers with a reduced subset of valid characters',
() => {
function tokenizePseudo(code: any /** TODO #9100 */) {
return tokenize(code, false, CssLexerMode.PSEUDO_SELECTOR);
function tokenizePseudo(code: string, withArgs = false): CssToken[] {
var mode = withArgs ? CssLexerMode.PSEUDO_SELECTOR_WITH_ARGUMENTS :
CssLexerMode.PSEUDO_SELECTOR;
return tokenize(code, false, mode);
}
expect(tokenizePseudo('lang(en-us)').length).toEqual(4);
expect(tokenizePseudo('hover').length).toEqual(1);
expect(tokenizePseudo('focus').length).toEqual(1);
expect(tokenizePseudo('lang(en-us)', true).length).toEqual(4);
expect(() => { tokenizePseudo('lang(something:broken)'); }).toThrow();
expect(() => { tokenizePseudo('lang(something:broken)', true); }).toThrow();
expect(() => { tokenizePseudo('not(.selector)'); }).toThrow();
});
});
describe('Pseudo Selector Mode', () => {
it('should validate pseudo selector identifiers with a reduced subset of valid characters',
() => {
function tokenizePseudo(code: any /** TODO #9100 */) {
return tokenize(code, false, CssLexerMode.PSEUDO_SELECTOR);
}
expect(tokenizePseudo('lang(en-us)').length).toEqual(4);
expect(tokenizePseudo('hover').length).toEqual(1);
expect(tokenizePseudo('focus').length).toEqual(1);
expect(() => { tokenizePseudo('lang(something:broken)'); }).toThrow();
expect(() => { tokenizePseudo('not(.selector)'); }).toThrow();
expect(() => { tokenizePseudo('not(.selector)', true); }).toThrow();
});
});

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@ -52,7 +52,7 @@ export function main() {
expect(value.tokens[0].strValue).toEqual('value123');
});
it('should parse mutliple CSS selectors sharing the same set of styles', () => {
it('should parse multiple CSS selectors sharing the same set of styles', () => {
var styles = `
.class, #id, tag, [attr], key + value, * value, :-moz-any-link {
prop: value123;
@ -65,13 +65,26 @@ export function main() {
var rule = <CssSelectorRuleAST>ast.rules[0];
expect(rule.selectors.length).toBe(7);
assertTokens(rule.selectors[0].tokens, ['.', 'class']);
assertTokens(rule.selectors[1].tokens, ['#', 'id']);
assertTokens(rule.selectors[2].tokens, ['tag']);
assertTokens(rule.selectors[3].tokens, ['[', 'attr', ']']);
assertTokens(rule.selectors[4].tokens, ['key', ' ', '+', ' ', 'value']);
assertTokens(rule.selectors[5].tokens, ['*', ' ', 'value']);
assertTokens(rule.selectors[6].tokens, [':', '-moz-any-link']);
var classRule = rule.selectors[0];
var idRule = rule.selectors[1];
var tagRule = rule.selectors[2];
var attrRule = rule.selectors[3];
var plusOpRule = rule.selectors[4];
var starOpRule = rule.selectors[5];
var mozRule = rule.selectors[6];
assertTokens(classRule.selectorParts[0].tokens, ['.', 'class']);
assertTokens(idRule.selectorParts[0].tokens, ['.', 'class']);
assertTokens(attrRule.selectorParts[0].tokens, ['[', 'attr', ']']);
assertTokens(plusOpRule.selectorParts[0].tokens, ['key']);
expect(plusOpRule.selectorParts[0].operator.strValue).toEqual('+');
assertTokens(plusOpRule.selectorParts[1].tokens, ['value']);
assertTokens(starOpRule.selectorParts[0].tokens, ['*']);
assertTokens(starOpRule.selectorParts[1].tokens, ['value']);
assertTokens(mozRule.selectorParts[0].pseudoSelectors[0].tokens, [':', '-moz-any-link']);
var style1 = <CssDefinitionAST>rule.block.entries[0];
expect(style1.property.strValue).toEqual('prop');
@ -324,11 +337,13 @@ export function main() {
var rules = ast.rules;
var pageRule1 = <CssBlockDefinitionRuleAST>rules[0];
expect(pageRule1.strValue).toEqual('one');
expect(pageRule1.query.strValue).toEqual('@page one');
expect(pageRule1.query.tokens[0].strValue).toEqual('one');
expect(pageRule1.type).toEqual(BlockType.Page);
var pageRule2 = <CssBlockDefinitionRuleAST>rules[1];
expect(pageRule2.strValue).toEqual('two');
expect(pageRule2.query.strValue).toEqual('@page two');
expect(pageRule2.query.tokens[0].strValue).toEqual('two');
expect(pageRule2.type).toEqual(BlockType.Page);
var selectorOne = <CssSelectorRuleAST>pageRule1.block.entries[0];
@ -424,7 +439,8 @@ export function main() {
var errors = output.errors;
expect(errors[0].msg)
.toMatchPattern(/Unbalanced pseudo selector function value at column 0:10/g);
.toMatchPattern(
/Character does not match expected Character value \("{" should match "\)"\)/);
});
it('should raise an error when a semi colon is missing from a CSS style/pair that isn\'t the last entry',
@ -458,8 +474,37 @@ export function main() {
var rule1 = <CssSelectorRuleAST>ast.rules[0];
expect(rule1.selectors.length).toEqual(1);
var selector = rule1.selectors[0];
assertTokens(selector.tokens, ['div', ':', 'not', '(', '.', 'ignore-this-div', ')']);
var simpleSelector = rule1.selectors[0].selectorParts[0];
assertTokens(simpleSelector.tokens, ['div']);
var pseudoSelector = simpleSelector.pseudoSelectors[0];
expect(pseudoSelector.name).toEqual('not');
assertTokens(pseudoSelector.tokens, ['.', 'ignore-this-div']);
});
it('should parse the inner selectors of a :host-context selector', () => {
var styles = `body > :host-context(.a, .b, .c:hover) {
prop: value;
}`;
var output = parse(styles);
var errors = output.errors;
var ast = output.ast;
expect(errors.length).toEqual(0);
var rule1 = <CssSelectorRuleAST>ast.rules[0];
expect(rule1.selectors.length).toEqual(1);
var simpleSelector = rule1.selectors[0].selectorParts[1];
var innerSelectors = simpleSelector.pseudoSelectors[0].innerSelectors;
assertTokens(innerSelectors[0].selectorParts[0].tokens, ['.', 'a']);
assertTokens(innerSelectors[1].selectorParts[0].tokens, ['.', 'b']);
var finalSelector = innerSelectors[2].selectorParts[0];
assertTokens(finalSelector.tokens, ['.', 'c', ':', 'hover']);
assertTokens(finalSelector.pseudoSelectors[0].tokens, [':', 'hover']);
});
it('should raise parse errors when CSS key/value pairs are invalid', () => {

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@ -1,11 +1,12 @@
import {CssLexer} from '@angular/compiler/src/css/lexer';
import {BlockType, CssAST, CssASTVisitor, CssBlockAST, CssBlockDefinitionRuleAST, CssBlockRuleAST, CssDefinitionAST, CssInlineRuleAST, CssKeyframeDefinitionAST, CssKeyframeRuleAST, CssMediaQueryRuleAST, CssParseError, CssParser, CssRuleAST, CssSelectorAST, CssSelectorRuleAST, CssStyleSheetAST, CssStyleValueAST, CssToken, CssUnknownTokenListAST} from '@angular/compiler/src/css/parser';
import {BlockType, CssAST, CssASTVisitor, CssAtRulePredicateAST, CssBlockAST, CssBlockDefinitionRuleAST, CssBlockRuleAST, CssDefinitionAST, CssInlineRuleAST, CssKeyframeDefinitionAST, CssKeyframeRuleAST, CssMediaQueryRuleAST, CssParseError, CssParser, CssPseudoSelectorAST, CssRuleAST, CssSelectorAST, CssSelectorRuleAST, CssSimpleSelectorAST, CssStyleSheetAST, CssStyleValueAST, CssStylesBlockAST, CssToken, CssUnknownRuleAST, CssUnknownTokenListAST} from '@angular/compiler/src/css/parser';
import {afterEach, beforeEach, ddescribe, describe, expect, iit, it, xit} from '@angular/core/testing/testing_internal';
import {BaseException} from '../../src/facade/exceptions';
import {NumberWrapper, StringWrapper, isPresent} from '../../src/facade/lang';
function _assertTokens(tokens: any /** TODO #9100 */, valuesArr: any /** TODO #9100 */) {
function _assertTokens(tokens: CssToken[], valuesArr: string[]): void {
expect(tokens.length).toEqual(valuesArr.length);
for (var i = 0; i < tokens.length; i++) {
expect(tokens[i].strValue == valuesArr[i]);
}
@ -14,75 +15,105 @@ function _assertTokens(tokens: any /** TODO #9100 */, valuesArr: any /** TODO #9
class MyVisitor implements CssASTVisitor {
captures: {[key: string]: any[]} = {};
_capture(
method: any /** TODO #9100 */, ast: any /** TODO #9100 */, context: any /** TODO #9100 */) {
_capture(method: string, ast: CssAST, context: any) {
this.captures[method] = isPresent(this.captures[method]) ? this.captures[method] : [];
this.captures[method].push([ast, context]);
}
constructor(ast: CssStyleSheetAST, context?: any) { ast.visit(this, context); }
constructor(ast: CssStyleSheetAST, context: any) { ast.visit(this, context); }
visitCssValue(ast: any /** TODO #9100 */, context?: any): void {
visitCssValue(ast: CssStyleValueAST, context: any): void {
this._capture('visitCssValue', ast, context);
}
visitInlineCssRule(ast: any /** TODO #9100 */, context?: any): void {
visitCssInlineRule(ast: CssInlineRuleAST, context: any): void {
this._capture('visitInlineCssRule', ast, context);
}
visitCssKeyframeRule(ast: CssKeyframeRuleAST, context?: any): void {
visitCssAtRulePredicate(ast: CssAtRulePredicateAST, context: any): void {
this._capture('visitCssAtRulePredicate', ast, context);
}
visitCssKeyframeRule(ast: CssKeyframeRuleAST, context: any): void {
this._capture('visitCssKeyframeRule', ast, context);
ast.block.visit(this, context);
}
visitCssKeyframeDefinition(ast: CssKeyframeDefinitionAST, context?: any): void {
visitCssKeyframeDefinition(ast: CssKeyframeDefinitionAST, context: any): void {
this._capture('visitCssKeyframeDefinition', ast, context);
ast.block.visit(this, context);
}
visitCssMediaQueryRule(ast: CssMediaQueryRuleAST, context?: any): void {
visitCssMediaQueryRule(ast: CssMediaQueryRuleAST, context: any): void {
this._capture('visitCssMediaQueryRule', ast, context);
ast.query.visit(this, context);
ast.block.visit(this, context);
}
visitCssSelectorRule(ast: CssSelectorRuleAST, context?: any): void {
visitCssSelectorRule(ast: CssSelectorRuleAST, context: any): void {
this._capture('visitCssSelectorRule', ast, context);
ast.selectors.forEach((selAST: CssSelectorAST) => { selAST.visit(this, context); });
ast.block.visit(this, context);
}
visitCssSelector(ast: CssSelectorAST, context?: any): void {
visitCssSelector(ast: CssSelectorAST, context: any): void {
this._capture('visitCssSelector', ast, context);
ast.selectorParts.forEach(
(simpleAst: CssSimpleSelectorAST) => { simpleAst.visit(this, context); });
}
visitCssDefinition(ast: CssDefinitionAST, context?: any): void {
visitCssSimpleSelector(ast: CssSimpleSelectorAST, context: any): void {
this._capture('visitCssSimpleSelector', ast, context);
ast.pseudoSelectors.forEach(
(pseudoAst: CssPseudoSelectorAST) => { pseudoAst.visit(this, context); });
}
visitCssDefinition(ast: CssDefinitionAST, context: any): void {
this._capture('visitCssDefinition', ast, context);
ast.value.visit(this, context);
}
visitCssBlock(ast: CssBlockAST, context?: any): void {
visitCssBlock(ast: CssBlockAST, context: any): void {
this._capture('visitCssBlock', ast, context);
ast.entries.forEach((entryAST: CssAST) => { entryAST.visit(this, context); });
}
visitCssStyleSheet(ast: CssStyleSheetAST, context?: any): void {
visitCssStylesBlock(ast: CssStylesBlockAST, context: any): void {
this._capture('visitCssStylesBlock', ast, context);
ast.definitions.forEach(
(definitionAst: CssDefinitionAST) => { definitionAst.visit(this, context); });
}
visitCssStyleSheet(ast: CssStyleSheetAST, context: any): void {
this._capture('visitCssStyleSheet', ast, context);
ast.rules.forEach((ruleAST: CssRuleAST) => { ruleAST.visit(this, context); });
}
visitUnkownRule(ast: CssUnknownTokenListAST, context?: any): void {
// nothing
visitCssUnknownRule(ast: CssUnknownRuleAST, context: any): void {
this._capture('visitUnknownRule', ast, context);
}
visitCssUnknownTokenList(ast: CssUnknownTokenListAST, context: any): void {
this._capture('visitUnknownTokenList', ast, context);
}
visitCssPseudoSelector(ast: CssPseudoSelectorAST, context: any): void {
this._capture('visitCssPseudoSelector', ast, context);
}
}
function _getCaptureAst(capture: any[], index = 0): CssAST {
return <CssAST>capture[index][0];
}
export function main() {
function parse(cssCode: string) {
function parse(cssCode: string, ignoreErrors: boolean = false) {
var lexer = new CssLexer();
var scanner = lexer.scan(cssCode);
var parser = new CssParser(scanner, 'some-fake-file-name.css');
var output = parser.parse();
var errors = output.errors;
if (errors.length > 0) {
if (errors.length > 0 && !ignoreErrors) {
throw new BaseException(errors.map((error: CssParseError) => error.msg).join(', '));
}
return output.ast;
@ -132,17 +163,26 @@ export function main() {
expect(captures.length).toEqual(3);
var rule1 = <CssSelectorRuleAST>captures[0][0];
var rule1 = <CssSelectorRuleAST>_getCaptureAst(captures, 0);
expect(rule1).toEqual(ast.rules[0]);
_assertTokens(rule1.selectors[0].tokens, ['.', 'rule1']);
var rule2 = <CssSelectorRuleAST>captures[1][0];
var firstSelector = rule1.selectors[0];
var firstSimpleSelector = firstSelector.selectorParts[0];
_assertTokens(firstSimpleSelector.tokens, ['.', 'rule1']);
var rule2 = <CssSelectorRuleAST>_getCaptureAst(captures, 1);
expect(rule2).toEqual(ast.rules[1]);
_assertTokens(rule2.selectors[0].tokens, ['.', 'rule2']);
var rule3 = captures[2][0];
var secondSelector = rule2.selectors[0];
var secondSimpleSelector = secondSelector.selectorParts[0];
_assertTokens(secondSimpleSelector.tokens, ['.', 'rule2']);
var rule3 = <CssSelectorRuleAST>_getCaptureAst(captures, 2);
expect(rule3).toEqual((<CssMediaQueryRuleAST>ast.rules[2]).block.entries[0]);
_assertTokens(rule3.selectors[0].tokens, ['#', 'rule3']);
var thirdSelector = rule3.selectors[0];
var thirdSimpleSelector = thirdSelector.selectorParts[0];
_assertTokens(thirdSimpleSelector.tokens, ['#', 'rule3']);
});
it('should parse and visit each of the stylesheet style key/value definitions', () => {
@ -151,23 +191,23 @@ export function main() {
expect(captures.length).toEqual(5);
var def1 = <CssDefinitionAST>captures[0][0];
var def1 = <CssDefinitionAST>_getCaptureAst(captures, 0);
expect(def1.property.strValue).toEqual('prop1');
expect(def1.value.tokens[0].strValue).toEqual('value1');
var def2 = <CssDefinitionAST>captures[1][0];
var def2 = <CssDefinitionAST>_getCaptureAst(captures, 1);
expect(def2.property.strValue).toEqual('prop2');
expect(def2.value.tokens[0].strValue).toEqual('value2');
var def3 = <CssDefinitionAST>captures[2][0];
var def3 = <CssDefinitionAST>_getCaptureAst(captures, 2);
expect(def3.property.strValue).toEqual('prop3');
expect(def3.value.tokens[0].strValue).toEqual('value3');
var def4 = <CssDefinitionAST>captures[3][0];
var def4 = <CssDefinitionAST>_getCaptureAst(captures, 3);
expect(def4.property.strValue).toEqual('prop4');
expect(def4.value.tokens[0].strValue).toEqual('value4');
var def5 = <CssDefinitionAST>captures[4][0];
var def5 = <CssDefinitionAST>_getCaptureAst(captures, 4);
expect(def5.property.strValue).toEqual('prop5');
expect(def5.value.tokens[0].strValue).toEqual('value5');
});
@ -178,20 +218,30 @@ export function main() {
expect(captures.length).toEqual(1);
var query1 = <CssMediaQueryRuleAST>captures[0][0];
_assertTokens(query1.query, ['all', 'and', '(', 'max-width', '100', 'px', ')']);
var query1 = <CssMediaQueryRuleAST>_getCaptureAst(captures, 0);
_assertTokens(query1.query.tokens, ['all', 'and', '(', 'max-width', '100', 'px', ')']);
expect(query1.block.entries.length).toEqual(1);
});
it('should capture the media query predicate', () => {
var visitor = new MyVisitor(ast, context);
var captures = visitor.captures['visitCssAtRulePredicate'];
expect(captures.length).toEqual(1);
var predicate = <CssAtRulePredicateAST>_getCaptureAst(captures, 0);
expect(predicate.strValue).toEqual('@media all (max-width: 100px)');
});
it('should parse and visit the associated "@inline" rule values', () => {
var visitor = new MyVisitor(ast, context);
var captures = visitor.captures['visitInlineCssRule'];
var captures = visitor.captures['visitCssInlineRule'];
expect(captures.length).toEqual(1);
var query1 = <CssInlineRuleAST>captures[0][0];
expect(query1.type).toEqual(BlockType.Import);
_assertTokens(query1.value.tokens, ['url', '(', 'file.css', ')']);
var inline1 = <CssInlineRuleAST>_getCaptureAst(captures, 0);
expect(inline1.type).toEqual(BlockType.Import);
_assertTokens(inline1.value.tokens, ['url', '(', 'file.css', ')']);
});
it('should parse and visit the keyframe blocks', () => {
@ -200,7 +250,7 @@ export function main() {
expect(captures.length).toEqual(1);
var keyframe1 = <CssKeyframeRuleAST>captures[0][0];
var keyframe1 = <CssKeyframeRuleAST>_getCaptureAst(captures, 0);
expect(keyframe1.name.strValue).toEqual('rotate');
expect(keyframe1.block.entries.length).toEqual(2);
});
@ -211,13 +261,55 @@ export function main() {
expect(captures.length).toEqual(2);
var def1 = <CssKeyframeDefinitionAST>captures[0][0];
var def1 = <CssKeyframeDefinitionAST>_getCaptureAst(captures, 0);
_assertTokens(def1.steps, ['from']);
expect(def1.block.entries.length).toEqual(1);
var def2 = <CssKeyframeDefinitionAST>captures[1][0];
var def2 = <CssKeyframeDefinitionAST>_getCaptureAst(captures, 1);
_assertTokens(def2.steps, ['50%', '100%']);
expect(def2.block.entries.length).toEqual(1);
});
it('should visit an unknown `@` rule', () => {
var cssCode = `
@someUnknownRule param {
one two three
}
`;
ast = parse(cssCode, true);
var visitor = new MyVisitor(ast, context);
var captures = visitor.captures['visitCssUnknownRule'];
expect(captures.length).toEqual(1);
var rule = <CssUnknownRuleAST>_getCaptureAst(captures, 0);
expect(rule.ruleName).toEqual('@someUnknownRule');
_assertTokens(rule.tokens, ['param', '{', 'one', 'two', 'three', '}']);
});
it('should collect an invalid list of tokens before a valid selector', () => {
var cssCode = 'one two three four five; selector { }';
ast = parse(cssCode, true);
var visitor = new MyVisitor(ast, context);
var captures = visitor.captures['visitCssUnknownTokenList'];
expect(captures.length).toEqual(1);
var rule = <CssUnknownTokenListAST>_getCaptureAst(captures, 0);
_assertTokens(rule.tokens, ['one', 'two', 'three', 'four', 'five']);
});
it('should collect an invalid list of tokens after a valid selector', () => {
var cssCode = 'selector { } six seven eight';
ast = parse(cssCode, true);
var visitor = new MyVisitor(ast, context);
var captures = visitor.captures['visitCssUnknownTokenList'];
expect(captures.length).toEqual(1);
var rule = <CssUnknownTokenListAST>_getCaptureAst(captures, 0);
_assertTokens(rule.tokens, ['six', 'seven', 'eight']);
});
});
}

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@ -497,6 +497,10 @@ export function bitWiseAnd(values: number[]): number {
return values.reduce((a, b) => { return a & b; });
}
export function bitWiseNot(value: number): number {
return ~value;
}
export function escape(s: string): string {
return _global.encodeURI(s);
}