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Minor refactoring of EvaluatorPreprocessor_read

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This commit is contained in:
p01 2014-06-02 14:58:16 +02:00
parent e0bf7e2151
commit 6731de6829
1 changed files with 17 additions and 22 deletions
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39
src/core/evaluator.js
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@ -2074,7 +2074,7 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() {
}
if (!isCmd(obj)) {
// argument
if (obj != null) {
if (obj !== null) {
args.push((obj instanceof Dict ? obj.getAll() : obj));
assert(args.length <= 33, 'Too many arguments');
}
@ -2090,37 +2090,32 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() {
}
var fn = opSpec.id;
var numArgs = opSpec.numArgs;
// Some post script commands can be nested, e.g. /F2 /GS2 gs 5.711 Tf
if (!opSpec.variableArgs && args.length !== opSpec.numArgs) {
while (args.length > opSpec.numArgs) {
this.nonProcessedArgs.push(args.shift());
if (!opSpec.variableArgs) {
// Some post script commands can be nested, e.g. /F2 /GS2 gs 5.711 Tf
if (args.length !== numArgs) {
var nonProcessedArgs = this.nonProcessedArgs;
while (args.length > numArgs) {
nonProcessedArgs.push(args.shift());
}
while (args.length < numArgs && nonProcessedArgs.length !== 0) {
args.unshift(nonProcessedArgs.pop());
}
}
while (args.length < opSpec.numArgs && this.nonProcessedArgs.length) {
args.unshift(this.nonProcessedArgs.pop());
}
}
// Validate the number of arguments for the command
if (opSpec.variableArgs) {
if (args.length > opSpec.numArgs) {
info('Command ' + fn + ': expected [0,' + opSpec.numArgs +
'] args, but received ' + args.length + ' args');
}
} else {
if (args.length < opSpec.numArgs) {
if (args.length < numArgs) {
// If we receive too few args, it's not possible to possible
// to execute the command, so skip the command
info('Command ' + fn + ': because expected ' +
opSpec.numArgs + ' args, but received ' + args.length +
numArgs + ' args, but received ' + args.length +
' args; skipping');
args = [];
continue;
} else if (args.length > opSpec.numArgs) {
info('Command ' + fn + ': expected ' + opSpec.numArgs +
' args, but received ' + args.length + ' args');
}
} else if (args.length > numArgs) {
info('Command ' + fn + ': expected [0,' + numArgs +
'] args, but received ' + args.length + ' args');
}
// TODO figure out how to type-check vararg functions