final void setNestedBlock(TemplateElement nestedBlock) {
if (nestedBlock != null) {
nestedBlock.parent = this;
nestedBlock.index = 0;
}
this.nestedBlock = nestedBlock;
}
/**
* Walk the AST subtree rooted by this element, and do simplifications where possible, also remove
* superfluous whitespace.
*
* @param stripWhitespace whether to remove superfluous whitespace
* @return The element this element should be replaced with in the parent. If it's the same as
* this element, no actual replacement will happen. Note that adjusting the {@link #parent}
* and {@link #index} of the result is the duty of the caller, not of this method.
*/
TemplateElement postParseCleanup(boolean stripWhitespace) throws ParseException {
int regulatedChildCount = this.regulatedChildCount;
if (regulatedChildCount != 0) {
for (int i = 0; i < regulatedChildCount; i++) {
TemplateElement te = regulatedChildBuffer[i];
te = te.postParseCleanup(stripWhitespace);
regulatedChildBuffer[i] = te;
te.parent = this;
te.index = i;
}
if (stripWhitespace) {
for (int i = 0; i < regulatedChildCount; i++) {
TemplateElement te = regulatedChildBuffer[i];
if (te.isIgnorable()) {
regulatedChildCount--;
for (int j = i; j < regulatedChildCount; j++) {
final TemplateElement te2 = regulatedChildBuffer[j + 1];
regulatedChildBuffer[j] = te2;
te2.index = j;
}
regulatedChildBuffer[regulatedChildCount] = null;
this.regulatedChildCount = regulatedChildCount;
i--;
}
}
}
if (regulatedChildCount < regulatedChildBuffer.length
&& regulatedChildCount <= regulatedChildBuffer.length * 3 / 4) {
TemplateElement[] trimmedregulatedChildBuffer = new TemplateElement[regulatedChildCount];
for (int i = 0; i < regulatedChildCount; i++) {
trimmedregulatedChildBuffer[i] = regulatedChildBuffer[i];
}
regulatedChildBuffer = trimmedregulatedChildBuffer;
}
} else if (nestedBlock != null) {
nestedBlock = nestedBlock.postParseCleanup(stripWhitespace);
if (nestedBlock.isIgnorable()) {
nestedBlock = null;
} else {
nestedBlock.parent = this;
}
}
return this;
}
public void setChildAt(int index, TemplateElement element) {
if (nestedBlock instanceof MixedContent) {
nestedBlock.setChildAt(index, element);
} else if (nestedBlock != null) {
if (index == 0) {
nestedBlock = element;
element.index = 0;
element.parent = this;
} else {
throw new IndexOutOfBoundsException("invalid index");
}
} else if (regulatedChildBuffer != null) {
regulatedChildBuffer[index] = element;
element.index = index;
element.parent = this;
} else {
throw new IndexOutOfBoundsException("element has no children");
}
}
final void addRegulatedChild(int index, TemplateElement nestedElement) {
final int lRegulatedChildCount = regulatedChildCount;
TemplateElement[] lRegulatedChildBuffer = regulatedChildBuffer;
if (lRegulatedChildBuffer == null) {
lRegulatedChildBuffer = new TemplateElement[INITIAL_REGULATED_CHILD_BUFFER_CAPACITY];
regulatedChildBuffer = lRegulatedChildBuffer;
} else if (lRegulatedChildCount == lRegulatedChildBuffer.length) {
setRegulatedChildBufferCapacity(lRegulatedChildCount != 0 ? lRegulatedChildCount * 2 : 1);
lRegulatedChildBuffer = regulatedChildBuffer;
}
// At this point: nestedElements == this.nestedElements, and has sufficient capacity.
for (int i = lRegulatedChildCount; i > index; i--) {
TemplateElement movedElement = lRegulatedChildBuffer[i - 1];
movedElement.index = i;
lRegulatedChildBuffer[i] = movedElement;
}
nestedElement.index = index;
nestedElement.parent = this;
lRegulatedChildBuffer[index] = nestedElement;
regulatedChildCount = lRegulatedChildCount + 1;
}