// ICU4N specific - de-nested Node class
// ICU4N specific - de-nested MessageNode class
// ICU4N specific - de-nested MessageContentsNode class
// ICU4N specific - de-nested TextNode class
// ICU4N specific - de-nested ArgNode class
// ICU4N specific - de-nested ComplexArgStyleNode class
// ICU4N specific - de-nested VariantNode class
private static MessageNode BuildMessageNode(MessagePattern pattern, int start, int limit)
{
int prevPatternIndex = pattern.GetPart(start).Limit;
MessageNode node = new MessageNode();
for (int i = start + 1; ; ++i)
{
MessagePatternPart part = pattern.GetPart(i);
int patternIndex = part.Index;
if (prevPatternIndex < patternIndex)
{
node.AddContentsNode(
new TextNode(pattern.PatternString.Substring(prevPatternIndex, patternIndex - prevPatternIndex))); // ICU4N: Corrected 2nd arg
}
if (i == limit)
{
break;
}
MessagePatternPartType partType = part.Type;
if (partType == MessagePatternPartType.ArgStart)
{
int argLimit = pattern.GetLimitPartIndex(i);
node.AddContentsNode(BuildArgNode(pattern, i, argLimit));
i = argLimit;
part = pattern.GetPart(i);
}
else if (partType == MessagePatternPartType.ReplaceNumber)
{
node.AddContentsNode(MessageContentsNode.CreateReplaceNumberNode());
// else: ignore SKIP_SYNTAX and INSERT_CHAR parts.
}
prevPatternIndex = part.Limit;
}
return(node.Freeze());
}
internal void AddContentsNode(MessageContentsNode node)
{
if (node is TextNode && list.Any())
{
// Coalesce adjacent text nodes.
MessageContentsNode lastNode = list[list.Count - 1];
if (lastNode is TextNode)
{
TextNode textNode = (TextNode)lastNode;
textNode.Text = textNode.Text + ((TextNode)node).Text;
return;
}
}
list.Add(node);
}
