refactor: remove some facades (#12731)

2016-11-08 15:43:24 -08:00
parent acbf1d859c
commit 7694f974af
4 changed files with 22 additions and 90 deletions
--- a/modules/@angular/compiler/src/expression_parser/lexer.ts
+++ b/modules/@angular/compiler/src/expression_parser/lexer.ts
@ -296,9 +296,9 @@ class _Scanner {
        if (this.peek == chars.$u) {
          // 4 character hex code for unicode character.
          const hex: string = input.substring(this.index + 1, this.index + 5);
-          try {
-            unescapedCode = NumberWrapper.parseInt(hex, 16);
-          } catch (e) {
+          if (/^[0-9a-f]+$/i.test(hex)) {
+            unescapedCode = parseInt(hex, 16);
+          } else {
            return this.error(`Invalid unicode escape [\\u${hex}]`, 0);
          }
          for (let i: number = 0; i < 5; i++) {