Created
March 28, 2019 09:40
-
-
Save sokolovstas/2d4694cfe89e90ed90bb5ea6c6c7165d to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| static parseBoolean(str: any): boolean { | |
| if (str === true) { | |
| return true; | |
| } | |
| if (str === false) { | |
| return false; | |
| } | |
| if (str === 1) { | |
| return true; | |
| } | |
| if (str === 0) { | |
| return false; | |
| } | |
| if (str === 'true') { | |
| return true; | |
| } | |
| if (!str) { | |
| return false; | |
| } | |
| switch (str.length) { | |
| case 1: { | |
| const ch0 = str.charAt(0); | |
| if (ch0 === 'y' || ch0 === 'Y' || | |
| ch0 === 't' || ch0 === 'T' || | |
| ch0 === '1') { | |
| return true; | |
| } | |
| if (ch0 === 'n' || ch0 === 'N' || | |
| ch0 === 'f' || ch0 === 'F' || | |
| ch0 === '0') { | |
| return false; | |
| } | |
| break; | |
| } | |
| case 2: { | |
| const ch0 = str.charAt(0); | |
| const ch1 = str.charAt(1); | |
| if ((ch0 === 'o' || ch0 === 'O') && | |
| (ch1 === 'n' || ch1 === 'N') ) { | |
| return true; | |
| } | |
| if ((ch0 === 'n' || ch0 === 'N') && | |
| (ch1 === 'o' || ch1 === 'O') ) { | |
| return false; | |
| } | |
| break; | |
| } | |
| case 3: { | |
| const ch0 = str.charAt(0); | |
| const ch1 = str.charAt(1); | |
| const ch2 = str.charAt(2); | |
| if ((ch0 === 'y' || ch0 === 'Y') && | |
| (ch1 === 'e' || ch1 === 'E') && | |
| (ch2 === 's' || ch2 === 'S') ) { | |
| return true; | |
| } | |
| if ((ch0 === 'o' || ch0 === 'O') && | |
| (ch1 === 'f' || ch1 === 'F') && | |
| (ch2 === 'f' || ch2 === 'F') ) { | |
| return false; | |
| } | |
| break; | |
| } | |
| case 4: { | |
| const ch0 = str.charAt(0); | |
| const ch1 = str.charAt(1); | |
| const ch2 = str.charAt(2); | |
| const ch3 = str.charAt(3); | |
| if ((ch0 === 't' || ch0 === 'T') && | |
| (ch1 === 'r' || ch1 === 'R') && | |
| (ch2 === 'u' || ch2 === 'U') && | |
| (ch3 === 'e' || ch3 === 'E') ) { | |
| return true; | |
| } | |
| break; | |
| } | |
| case 5: { | |
| const ch0 = str.charAt(0); | |
| const ch1 = str.charAt(1); | |
| const ch2 = str.charAt(2); | |
| const ch3 = str.charAt(3); | |
| const ch4 = str.charAt(4); | |
| if ((ch0 === 'f' || ch0 === 'F') && | |
| (ch1 === 'a' || ch1 === 'A') && | |
| (ch2 === 'l' || ch2 === 'L') && | |
| (ch3 === 's' || ch3 === 'S') && | |
| (ch4 === 'e' || ch4 === 'E') ) { | |
| return false; | |
| } | |
| break; | |
| } | |
| default: | |
| break; | |
| } | |
| return false; | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment