honeymoose
/
angular-cn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

feat(parser): support === and !== operators 

Closes #1496

Closes #1500
This commit is contained in:
Pawel Kozlowski 2015-04-22 11:45:33 +02:00
parent 2e3e41ba64
commit afe0e45453
5 changed files with 32 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
modules/angular2/src/change_detection/parser/ast.js vendored
View File

@ -281,6 +281,8 @@ export class Binary extends AST {
case '%' : return left % right;
case '==' : return left == right;
case '!=' : return left != right;
case '===' : return left === right;
case '!==' : return left !== right;
case '<' : return left < right;
case '>' : return left > right;
case '<=' : return left <= right;

4
modules/angular2/src/change_detection/parser/lexer.js vendored
View File

@ -304,7 +304,7 @@ class _Scanner {
assert(this.peek == StringWrapper.charCodeAt(one, 0));
this.advance();
var str:string = one;
if (this.peek == code) {
while (this.peek == code) {
this.advance();
str += two;
}
@ -461,6 +461,8 @@ var OPERATORS = SetWrapper.createFromList([
'=',
'==',
'!=',
'===',
'!==',
'<',
'>',
'<=',

6
modules/angular2/src/change_detection/parser/parser.js vendored
View File

@ -277,13 +277,17 @@ class _ParseAST {
}
parseEquality() {
// '==','!='
// '==','!=','===','!=='
var result = this.parseRelational();
while (true) {
if (this.optionalOperator('==')) {
result = new Binary('==', result, this.parseRelational());
} else if (this.optionalOperator('===')) {
result = new Binary('===', result, this.parseRelational());
} else if (this.optionalOperator('!=')) {
result = new Binary('!=', result, this.parseRelational());
} else if (this.optionalOperator('!==')) {
result = new Binary('!==', result, this.parseRelational());
} else {
return result;
}

6
modules/angular2/test/change_detection/parser/lexer_spec.js vendored
View File

@ -1,4 +1,4 @@
import {describe, it, expect} from 'angular2/test_lib';
import {ddescribe, describe, it, expect} from 'angular2/test_lib';
import {Lexer, Token} from 'angular2/src/change_detection/parser/lexer';
@ -150,7 +150,7 @@ export function main() {
});
it('should tokenize relation', function() {
var tokens:List<Token> = lex("! == != < > <= >=");
var tokens:List<Token> = lex("! == != < > <= >= === !==");
expectOperatorToken(tokens[0], 0, '!');
expectOperatorToken(tokens[1], 2, '==');
expectOperatorToken(tokens[2], 5, '!=');
@ -158,6 +158,8 @@ export function main() {
expectOperatorToken(tokens[4], 10, '>');
expectOperatorToken(tokens[5], 12, '<=');
expectOperatorToken(tokens[6], 15, '>=');
expectOperatorToken(tokens[7], 18, '===');
expectOperatorToken(tokens[8], 22, '!==');
});
it('should tokenize statements', function() {

19
modules/angular2/test/change_detection/parser/parser_spec.js vendored
View File

@ -104,6 +104,7 @@ export function main() {
it('should parse unary ! expressions', () => {
expectEval("!true").toEqual(!true);
expectEval("!!true").toEqual(!!true);
expectEval("!!!true").toEqual(!!!true);
});
it('should parse multiplicative expressions', () => {
@ -123,7 +124,23 @@ export function main() {
it('should parse equality expressions', () => {
expectEval("2==3").toEqual(2 == 3);
expectEval("2=='2'").toEqual(2 == '2');
expectEval("2=='3'").toEqual(2 == '3');
expectEval("2!=3").toEqual(2 != 3);
expectEval("2!='3'").toEqual(2 != '3');
expectEval("2!='2'").toEqual(2 != '2');
expectEval("2!=!false").toEqual(2!=!false);
});
it('should parse strict equality expressions', () => {
expectEval("2===3").toEqual(2 === 3);
expectEval("2==='3'").toEqual(2 === '3');
expectEval("2==='2'").toEqual(2 === '2');
expectEval("2!==3").toEqual(2 !== 3);
expectEval("2!=='3'").toEqual(2 !== '3');
expectEval("2!=='2'").toEqual(2 !== '2');
expectEval("false===!true").toEqual(false===!true);
expectEval("false!==!!true").toEqual(false!==!!true);
});
it('should parse logicalAND expressions', () => {
@ -608,4 +625,4 @@ export function main() {
});
});
});
}
}