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Combine if/else block with switch for getOperatorList.

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This commit is contained in:
Brendan Dahl 2013-11-18 16:50:58 -08:00
parent f88e0b51c2
commit a4f329aa38
1 changed files with 107 additions and 93 deletions
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52
src/core/evaluator.js
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@ -540,7 +540,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var promise = new Promise(); var promise = new Promise();
var args = []; var args = [];
nextOp:
while (true) { while (true) {
var obj = parser.getObj(); var obj = parser.getObj();
@ -584,8 +583,12 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// TODO figure out how to type-check vararg functions // TODO figure out how to type-check vararg functions
if ((cmd == 'SCN' || cmd == 'scn') && switch (fn) {
!args[args.length - 1].code) { case OPS.setStrokeColorN:
case OPS.setFillColorN:
if (args[args.length - 1].code) {
break;
}
// compile tiling patterns // compile tiling patterns
var patternName = args[args.length - 1]; var patternName = args[args.length - 1];
// SCN/scn applies patterns along with normal colors // SCN/scn applies patterns along with normal colors
@ -611,7 +614,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
error('Unkown PatternType ' + typeNum); error('Unkown PatternType ' + typeNum);
} }
} }
} else if (cmd == 'Do' && !args[0].code) { break;
case OPS.paintXObject:
if (args[0].code) {
break;
}
// eagerly compile XForm objects // eagerly compile XForm objects
var name = args[0].name; var name = args[0].name;
var xobj = xobjs.get(name); var xobj = xobjs.get(name);
@ -638,28 +645,34 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
error('Unhandled XObject subtype ' + type.name); error('Unhandled XObject subtype ' + type.name);
} }
} }
} else if (cmd == 'Tf') { // eagerly collect all fonts break;
case OPS.setFont:
// eagerly collect all fonts
var loadedName = self.handleSetFont(resources, args, null, var loadedName = self.handleSetFont(resources, args, null,
operatorList); operatorList);
operatorList.addDependency(loadedName); operatorList.addDependency(loadedName);
fn = OPS.setFont;
args[0] = loadedName; args[0] = loadedName;
} else if (cmd == 'EI') { break;
self.buildPaintImageXObject(resources, args[0], true, operatorList); case OPS.endInlineImage:
self.buildPaintImageXObject(resources, args[0], true,
operatorList);
args = []; args = [];
continue; continue;
} else if (cmd === 'q') { // save case OPS.save:
var old = this.state; var old = this.state;
this.stateStack.push(this.state); this.stateStack.push(this.state);
this.state = old.clone(); this.state = old.clone();
} else if (cmd === 'Q') { // restore break;
case OPS.restore:
var prev = this.stateStack.pop(); var prev = this.stateStack.pop();
if (prev) { if (prev) {
this.state = prev; this.state = prev;
} }
} else if (cmd === 'Tj') { // showText break;
case OPS.showText:
args[0] = this.handleText(args[0]); args[0] = this.handleText(args[0]);
} else if (cmd === 'TJ') { // showSpacedText break;
case OPS.showSpacedText:
var arr = args[0]; var arr = args[0];
var arrLength = arr.length; var arrLength = arr.length;
for (var i = 0; i < arrLength; ++i) { for (var i = 0; i < arrLength; ++i) {
@ -667,15 +680,16 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
arr[i] = this.handleText(arr[i]); arr[i] = this.handleText(arr[i]);
} }
} }
} else if (cmd === '\'') { // nextLineShowText break;
case OPS.nextLineShowText:
args[0] = this.handleText(args[0]); args[0] = this.handleText(args[0]);
} else if (cmd === '"') { // nextLineSetSpacingShowText break;
case OPS.nextLineSetSpacingShowText:
args[2] = this.handleText(args[2]); args[2] = this.handleText(args[2]);
} else if (cmd === 'Tr') { // setTextRenderingMode break;
case OPS.setTextRenderingMode:
this.state.textRenderingMode = args[0]; this.state.textRenderingMode = args[0];
} break;
switch (fn) {
// Parse the ColorSpace data to a raw format. // Parse the ColorSpace data to a raw format.
case OPS.setFillColorSpace: case OPS.setFillColorSpace:
case OPS.setStrokeColorSpace: case OPS.setStrokeColorSpace:
@ -706,7 +720,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var gState = extGState.get(dictName.name); var gState = extGState.get(dictName.name);
self.setGState(resources, gState, operatorList); self.setGState(resources, gState, operatorList);
args = []; args = [];
continue nextOp; continue;
} // switch } // switch
operatorList.addOp(fn, args); operatorList.addOp(fn, args);