public void writeOperation(SimpleInstruction operation) {
if (isWithinOperationSet()) {
OperationSet currentOperationSet = operationSetStack.peek();
currentOperationSet.addOperation(operation);
} else {
if (operation.getType() == SimpleInstruction.Type.PURL) {
writeOperation(getMessageHelper().getPluralizedMessage(
"operation.purl", 1));
} else {
writeOperation(getMessageHelper().getPluralizedMessage(
"operation.knit", 1));
}
}
}
private boolean renderOperationSet(OperationSet operationSet,
boolean potentiallySimple) {
if (operationSet.size() > 1) {
potentiallySimple = false;
}
if (operationSet.getHead() != null) {
getWriterHelper().write(
StringUtils.capitalize(operationSet.getHead()));
}
Iterator it = operationSet.iterator();
while (it.hasNext()) {
Object operation = it.next();
boolean useComma = true;
if (operation instanceof RepeatOperationSet) {
// a RepeatInstructionSet takes additional handling
renderRepeatInstructionSet((RepeatOperationSet) operation,
potentiallySimple);
} else if (operation instanceof OperationSet) {
OperationSet nestedOperationSet = (OperationSet) operation;
if (nestedOperationSet.getType() == Type.INLINE_INSTRUCTION) {
renderOperationSet(nestedOperationSet, potentiallySimple);
} else if (nestedOperationSet.getType() == Type.USING_NEEDLE) {
// an operation set of type USING_NEEDLE
getWriterHelper().writeNewLine();
getWriterHelper().incrementIndent();
getWriterHelper().writeIndent();
renderOperationSet((OperationSet) operation,
potentiallySimple);
getWriterHelper().decrementIndent();
useComma = false;
}
} else if (operation instanceof SimpleInstruction) {
SimpleInstruction simpleInstruction = (SimpleInstruction) operation;
String message;
if (simpleInstruction.getType() == SimpleInstruction.Type.KNIT) {
if (potentiallySimple) {
message = getMessage("operation.knit-only");
} else {
message = getMessageHelper().getPluralizedMessage(
"operation.knit", 1, StringUtils.EMPTY);
}
} else if (simpleInstruction.getType() == SimpleInstruction.Type.PURL) {
if (potentiallySimple) {
message = getMessage("operation.purl-only");
} else {
message = getMessageHelper().getPluralizedMessage(
"operation.purl", 1, StringUtils.EMPTY);
}
} else {
throw new IllegalArgumentException(
"Unhandled operation type "
+ simpleInstruction.getType());
}
// some messages may take one argument
getWriterHelper().write(message);
} else {
// it's something but it's not simple
potentiallySimple = false;
getWriterHelper().write(String.valueOf(operation));
}
if (it.hasNext() && useComma) {
getWriterHelper().write(
getMessage("operation.list-item-separator") + " ");
}
}
if (operationSet.getTail() != null) {
getWriterHelper()
.write(
". "
+ StringUtils.capitalize(operationSet
.getTail()) + ".");
}
return potentiallySimple;
}
