Combine if/else block with switch for getOperatorList.
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Brendan Dahl
parent
f88e0b51c2
commit
a4f329aa38
@ -540,7 +540,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
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var promise = new Promise();
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var args = [];
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nextOp:
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while (true) {
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var obj = parser.getObj();
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@ -584,98 +583,113 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
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// TODO figure out how to type-check vararg functions
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if ((cmd == 'SCN' || cmd == 'scn') &&
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!args[args.length - 1].code) {
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// compile tiling patterns
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var patternName = args[args.length - 1];
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// SCN/scn applies patterns along with normal colors
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var pattern;
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if (isName(patternName) &&
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(pattern = patterns.get(patternName.name))) {
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var dict = isStream(pattern) ? pattern.dict : pattern;
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var typeNum = dict.get('PatternType');
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if (typeNum == TILING_PATTERN) {
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self.handleTilingType(fn, args, resources, pattern, dict,
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operatorList);
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args = [];
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continue;
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} else if (typeNum == SHADING_PATTERN) {
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var shading = dict.get('Shading');
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var matrix = dict.get('Matrix');
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var pattern = Pattern.parseShading(shading, matrix, xref,
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resources);
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args = pattern.getIR();
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} else {
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error('Unkown PatternType ' + typeNum);
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}
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}
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} else if (cmd == 'Do' && !args[0].code) {
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// eagerly compile XForm objects
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var name = args[0].name;
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var xobj = xobjs.get(name);
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if (xobj) {
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assertWellFormed(
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isStream(xobj), 'XObject should be a stream');
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var type = xobj.dict.get('Subtype');
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assertWellFormed(
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isName(type),
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'XObject should have a Name subtype'
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);
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if ('Form' == type.name) {
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self.buildFormXObject(resources, xobj, null, operatorList);
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args = [];
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continue;
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} else if ('Image' == type.name) {
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self.buildPaintImageXObject(resources, xobj, false,
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operatorList);
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args = [];
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continue;
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} else {
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error('Unhandled XObject subtype ' + type.name);
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}
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}
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} else if (cmd == 'Tf') { // eagerly collect all fonts
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var loadedName = self.handleSetFont(resources, args, null,
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operatorList);
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operatorList.addDependency(loadedName);
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fn = OPS.setFont;
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args[0] = loadedName;
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} else if (cmd == 'EI') {
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self.buildPaintImageXObject(resources, args[0], true, operatorList);
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args = [];
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continue;
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} else if (cmd === 'q') { // save
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var old = this.state;
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this.stateStack.push(this.state);
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this.state = old.clone();
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} else if (cmd === 'Q') { // restore
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var prev = this.stateStack.pop();
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if (prev) {
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this.state = prev;
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}
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} else if (cmd === 'Tj') { // showText
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args[0] = this.handleText(args[0]);
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} else if (cmd === 'TJ') { // showSpacedText
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var arr = args[0];
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var arrLength = arr.length;
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for (var i = 0; i < arrLength; ++i) {
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if (isString(arr[i])) {
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arr[i] = this.handleText(arr[i]);
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}
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}
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} else if (cmd === '\'') { // nextLineShowText
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args[0] = this.handleText(args[0]);
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} else if (cmd === '"') { // nextLineSetSpacingShowText
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args[2] = this.handleText(args[2]);
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} else if (cmd === 'Tr') { // setTextRenderingMode
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this.state.textRenderingMode = args[0];
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}
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switch (fn) {
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case OPS.setStrokeColorN:
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case OPS.setFillColorN:
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if (args[args.length - 1].code) {
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break;
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}
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// compile tiling patterns
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var patternName = args[args.length - 1];
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// SCN/scn applies patterns along with normal colors
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var pattern;
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if (isName(patternName) &&
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(pattern = patterns.get(patternName.name))) {
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var dict = isStream(pattern) ? pattern.dict : pattern;
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var typeNum = dict.get('PatternType');
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if (typeNum == TILING_PATTERN) {
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self.handleTilingType(fn, args, resources, pattern, dict,
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operatorList);
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args = [];
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continue;
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} else if (typeNum == SHADING_PATTERN) {
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var shading = dict.get('Shading');
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var matrix = dict.get('Matrix');
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var pattern = Pattern.parseShading(shading, matrix, xref,
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resources);
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args = pattern.getIR();
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} else {
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error('Unkown PatternType ' + typeNum);
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}
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}
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break;
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case OPS.paintXObject:
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if (args[0].code) {
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break;
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}
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// eagerly compile XForm objects
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var name = args[0].name;
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var xobj = xobjs.get(name);
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if (xobj) {
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assertWellFormed(
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isStream(xobj), 'XObject should be a stream');
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var type = xobj.dict.get('Subtype');
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assertWellFormed(
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isName(type),
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'XObject should have a Name subtype'
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);
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if ('Form' == type.name) {
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self.buildFormXObject(resources, xobj, null, operatorList);
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args = [];
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continue;
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} else if ('Image' == type.name) {
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self.buildPaintImageXObject(resources, xobj, false,
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operatorList);
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args = [];
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continue;
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} else {
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error('Unhandled XObject subtype ' + type.name);
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}
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}
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break;
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case OPS.setFont:
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// eagerly collect all fonts
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var loadedName = self.handleSetFont(resources, args, null,
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operatorList);
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operatorList.addDependency(loadedName);
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args[0] = loadedName;
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break;
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case OPS.endInlineImage:
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self.buildPaintImageXObject(resources, args[0], true,
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operatorList);
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args = [];
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continue;
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case OPS.save:
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var old = this.state;
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this.stateStack.push(this.state);
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this.state = old.clone();
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break;
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case OPS.restore:
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var prev = this.stateStack.pop();
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if (prev) {
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this.state = prev;
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}
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break;
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case OPS.showText:
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args[0] = this.handleText(args[0]);
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break;
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case OPS.showSpacedText:
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var arr = args[0];
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var arrLength = arr.length;
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for (var i = 0; i < arrLength; ++i) {
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if (isString(arr[i])) {
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arr[i] = this.handleText(arr[i]);
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}
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}
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break;
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case OPS.nextLineShowText:
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args[0] = this.handleText(args[0]);
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break;
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case OPS.nextLineSetSpacingShowText:
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args[2] = this.handleText(args[2]);
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break;
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case OPS.setTextRenderingMode:
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this.state.textRenderingMode = args[0];
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break;
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// Parse the ColorSpace data to a raw format.
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case OPS.setFillColorSpace:
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case OPS.setStrokeColorSpace:
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@ -706,7 +720,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
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var gState = extGState.get(dictName.name);
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self.setGState(resources, gState, operatorList);
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args = [];
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continue nextOp;
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continue;
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} // switch
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operatorList.addOp(fn, args);
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