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Added octal and binary number support; added ES6 version checks.

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This commit is contained in:
Ingvar Stepanyan
2014-07-23 21:07:57 +03:00
committed by Marijn Haverbeke
parent a31bad6773
commit 839338b270
1 changed files with 12 additions and 5 deletions
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17
acorn.js
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@@ -692,10 +692,13 @@
case 58: ++tokPos; return finishToken(_colon);
case 63: ++tokPos; return finishToken(_question);
// '0x' is a hexadecimal number.
case 48: // '0'
var next = input.charCodeAt(tokPos + 1);
if (next === 120 || next === 88) return readHexNumber();
if (next === 120 || next === 88) return readRadixNumber(16); // '0x', '0X' - hex number
if (options.ecmaVersion >= 6) {
if (next === 111 || next === 79) return readRadixNumber(8); // '0o', '0O' - octal number
if (next === 98 || next === 66) return readRadixNumber(2); // '0b', '0B' - binary number
}
// Anything else beginning with a digit is an integer, octal
// number, or float.
case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: // 1-9
@@ -821,10 +824,10 @@
return total;
}
function readHexNumber() {
function readRadixNumber(radix) {
tokPos += 2; // 0x
var val = readInt(16);
if (val == null) raise(tokStart + 2, "Expected hexadecimal number");
var val = readInt(radix);
if (val == null) raise(tokStart + 2, "Expected number in radix " + radix);
if (isIdentifierStart(input.charCodeAt(tokPos))) raise(tokPos, "Identifier directly after number");
return finishToken(_num, val);
}
@@ -862,6 +865,7 @@
var ch = input.charCodeAt(tokPos), code;
if (ch === 123) {
if (options.ecmaVersion < 6) unexpected();
++tokPos;
code = readHexChar();
ch = input.charCodeAt(tokPos++);
@@ -1776,6 +1780,9 @@
else if (isStatement) unexpected();
else node.id = null;
node.params = [];
if (options.ecmaVersion >= 6) {
node.defaults = [];
}
node.rest = null;
expect(_parenL);
for (;;) {