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fix(ExpressionParser): undefined is undefined (was null)

This commit is contained in:
Victor Berchet 2016-08-04 17:04:30 -07:00 committed by Alex Rickabaugh
parent 0ca05eee45
commit b4613ab2d2
2 changed files with 8 additions and 1 deletions
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7
modules/@angular/compiler/src/expression_parser/parser.ts
View File

@ -511,10 +511,15 @@ export class _ParseAST {
this.rparensExpected--;
this.expectCharacter(chars.$RPAREN);
return result;
} else if (this.next.isKeywordNull() || this.next.isKeywordUndefined()) {
} else if (this.next.isKeywordNull()) {
this.advance();
return new LiteralPrimitive(this.span(start), null);
} else if (this.next.isKeywordUndefined()) {
this.advance();
return new LiteralPrimitive(this.span(start), void 0);
} else if (this.next.isKeywordTrue()) {
this.advance();
return new LiteralPrimitive(this.span(start), true);

2
modules/@angular/compiler/test/expression_parser/parser_spec.ts
View File

@ -92,6 +92,8 @@ export function main() {
it('should parse null', () => { checkAction('null'); });
it('should parse undefined', () => { checkAction('undefined'); });
it('should parse unary - expressions', () => {
checkAction('-1', '0 - 1');
checkAction('+1', '1');