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Removes error()

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This commit is contained in:
Yury Delendik 2017-06-28 13:51:31 -07:00
parent ac9802809c
commit d028c26210
24 changed files with 318 additions and 260 deletions
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54
src/core/jbig2.js
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@ -14,10 +14,22 @@
*/
import {
error, log2, readInt8, readUint16, readUint32, shadow
log2, readInt8, readUint16, readUint32, shadow
} from '../shared/util';
import { ArithmeticDecoder } from './arithmetic_decoder';
let Jbig2Error = (function Jbig2ErrorClosure() {
function Jbig2Error(msg) {
this.message = 'JBIG2 error: ' + msg;
}
Jbig2Error.prototype = new Error();
Jbig2Error.prototype.name = 'Jbig2Error';
Jbig2Error.constructor = Jbig2Error;
return Jbig2Error;
})();
var Jbig2Image = (function Jbig2ImageClosure() {
// Utility data structures
function ContextCache() {}
@ -194,7 +206,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
function decodeBitmap(mmr, width, height, templateIndex, prediction, skip, at,
decodingContext) {
if (mmr) {
error('JBIG2 error: MMR encoding is not supported');
throw new Jbig2Error('MMR encoding is not supported');
}
// Use optimized version for the most common case
@ -361,7 +373,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
var sltp = decoder.readBit(contexts, pseudoPixelContext);
ltp ^= sltp;
if (ltp) {
error('JBIG2 error: prediction is not supported');
throw new Jbig2Error('prediction is not supported');
}
}
var row = new Uint8Array(width);
@ -403,7 +415,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
refinementTemplateIndex, refinementAt,
decodingContext) {
if (huffman) {
error('JBIG2 error: huffman is not supported');
throw new Jbig2Error('huffman is not supported');
}
var newSymbols = [];
@ -490,7 +502,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
refinementTemplateIndex, refinementAt,
decodingContext) {
if (huffman) {
error('JBIG2 error: huffman is not supported');
throw new Jbig2Error('huffman is not supported');
}
// Prepare bitmap
@ -566,8 +578,8 @@ var Jbig2Image = (function Jbig2ImageClosure() {
}
break;
default:
error('JBIG2 error: operator ' + combinationOperator +
' is not supported');
throw new Jbig2Error(
`operator ${combinationOperator} is not supported`);
}
}
currentS += symbolHeight - 1;
@ -590,8 +602,8 @@ var Jbig2Image = (function Jbig2ImageClosure() {
}
break;
default:
error('JBIG2 error: operator ' + combinationOperator +
' is not supported');
throw new Jbig2Error(
`operator ${combinationOperator} is not supported`);
}
}
currentS += symbolWidth - 1;
@ -613,7 +625,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
var flags = data[start + 4];
var segmentType = flags & 0x3F;
if (!SegmentTypes[segmentType]) {
error('JBIG2 error: invalid segment type: ' + segmentType);
throw new Jbig2Error('invalid segment type: ' + segmentType);
}
segmentHeader.type = segmentType;
segmentHeader.typeName = SegmentTypes[segmentType];
@ -633,7 +645,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
retainBits.push(data[position++]);
}
} else if (referredFlags === 5 || referredFlags === 6) {
error('JBIG2 error: invalid referred-to flags');
throw new Jbig2Error('invalid referred-to flags');
}
segmentHeader.retainBits = retainBits;
@ -687,10 +699,10 @@ var Jbig2Image = (function Jbig2ImageClosure() {
}
}
if (segmentHeader.length === 0xFFFFFFFF) {
error('JBIG2 error: segment end was not found');
throw new Jbig2Error('segment end was not found');
}
} else {
error('JBIG2 error: invalid unknown segment length');
throw new Jbig2Error('invalid unknown segment length');
}
}
segmentHeader.headerEnd = position;
@ -834,7 +846,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
position += 4;
// TODO 7.4.3.1.7 Symbol ID Huffman table decoding
if (textRegion.huffman) {
error('JBIG2 error: huffman is not supported');
throw new Jbig2Error('huffman is not supported');
}
args = [textRegion, header.referredTo, data, position, end];
break;
@ -891,8 +903,8 @@ var Jbig2Image = (function Jbig2ImageClosure() {
// are comments and can be ignored.
break;
default:
error('JBIG2 error: segment type ' + header.typeName + '(' +
header.type + ') is not implemented');
throw new Jbig2Error(`segment type ${header.typeName}(${header.type})` +
' is not implemented');
}
var callbackName = 'on' + header.typeName;
if (callbackName in visitor) {
@ -912,7 +924,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
data[position + 2] !== 0x42 || data[position + 3] !== 0x32 ||
data[position + 4] !== 0x0D || data[position + 5] !== 0x0A ||
data[position + 6] !== 0x1A || data[position + 7] !== 0x0A) {
error('JBIG2 error: invalid header');
throw new Jbig2Error('invalid header');
}
var header = {};
position += 8;
@ -923,7 +935,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
position += 4;
}
readSegments(header, data, position, end); // segments
error('Not implemented');
throw new Error('Not implemented');
// processSegments(segments, new SimpleSegmentVisitor());
}
@ -999,8 +1011,8 @@ var Jbig2Image = (function Jbig2ImageClosure() {
}
break;
default:
error('JBIG2 error: operator ' + combinationOperator +
' is not supported');
throw new Jbig2Error(
`operator ${combinationOperator} is not supported`);
}
},
onImmediateGenericRegion:
@ -1024,7 +1036,7 @@ var Jbig2Image = (function Jbig2ImageClosure() {
data, start, end) {
var huffmanTables;
if (dictionary.huffman) {
error('JBIG2 error: huffman is not supported');
throw new Jbig2Error('huffman is not supported');
}
// Combines exported symbols from all referred segments