Sakurai/pdf.js
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remove null checks that always evaluate to false

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This commit is contained in:
fkaelberer 2014-10-30 09:18:52 +01:00
parent 5f32f80e34
commit ea719ae805
1 changed files with 4 additions and 11 deletions
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15
src/core/jpg.js
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@ -130,9 +130,8 @@ var JpegImage = (function jpegImage() {
function decodeHuffman(tree) { function decodeHuffman(tree) {
var node = tree; var node = tree;
var bit; while (true) {
while ((bit = readBit()) !== null) { node = node[readBit()];
node = node[bit];
if (typeof node === 'number') { if (typeof node === 'number') {
return node; return node;
} }
@ -140,17 +139,12 @@ var JpegImage = (function jpegImage() {
throw 'invalid huffman sequence'; throw 'invalid huffman sequence';
} }
} }
return null;
} }
function receive(length) { function receive(length) {
var n = 0; var n = 0;
while (length > 0) { while (length > 0) {
var bit = readBit(); n = (n << 1) | readBit();
if (bit === null) {
return;
}
n = (n << 1) | bit;
length--; length--;
} }
return n; return n;
@ -866,8 +860,7 @@ var JpegImage = (function jpegImage() {
} }
} }
// decodeTransform will contains pairs of multiplier (-256..256) and // decodeTransform contains pairs of multiplier (-256..256) and additive
// additive
var transform = this.decodeTransform; var transform = this.decodeTransform;
if (transform) { if (transform) {
for (i = 0; i < dataLength;) { for (i = 0; i < dataLength;) {