/// <summary>
/// Checks if the current token represents the beginning of a code block, if yes, parse every code block after the token.
/// </summary>
/// <param name="tokenNodeType">The current token type.</param>
/// <param name="parentElement">The parent element where the potential code block will be appended as a child.</param>
/// <returns><c>true</c> is a code block has been parsed, <c>false</c> otherwise.</returns>
private bool TryParseCodeBlock([CanBeNull] T4TokenNodeType tokenNodeType, [NotNull] CompositeElement parentElement)
{
if (tokenNodeType != null)
{
T4CodeBlock codeBlock;
if (tokenNodeType == T4TokenNodeTypes.StatementStart)
{
codeBlock = new T4StatementBlock();
}
else if (tokenNodeType == T4TokenNodeTypes.ExpressionStart)
{
codeBlock = new T4ExpressionBlock();
}
else if (tokenNodeType == T4TokenNodeTypes.FeatureStart)
{
codeBlock = new T4FeatureBlock();
}
else
{
codeBlock = null;
}
if (codeBlock != null)
{
AppendNewChild(parentElement, ParseCodeBlock(tokenNodeType, codeBlock));
return(true);
}
}
return(false);
}
protected override Action <ITextControl> ExecutePsiTransaction(ISolution solution, IProgressIndicator progress)
{
T4StatementBlock statementBlock = _highlighting.AssociatedNode;
var file = statementBlock.GetContainingFile() as IT4File;
Assertion.AssertNotNull(file, "file != null");
T4FeatureBlock feature = file.GetFeatureBlocks().First();
ITreeNode featureBlock;
using (file.CreateWriteLock()) {
// clone the statement block and add it before the feature block
ITreeNode featurePrevSibling = feature.PrevSibling;
featureBlock = ModificationUtil.CloneNode(statementBlock, node => { });
featureBlock = ModificationUtil.AddChildBefore(feature, featureBlock);
// add a new line before the new statement block if needed
if (featurePrevSibling != null && featurePrevSibling.GetTokenType() == T4TokenNodeTypes.NewLine)
{
ModificationUtil.AddChildAfter(featureBlock, T4TokenNodeTypes.NewLine.CreateLeafElement());
}
ModificationUtil.DeleteChild(statementBlock);
}
return(textControl => {
TextRange range = featureBlock.GetDocumentRange().TextRange;
textControl.Caret.MoveTo(range.EndOffset, CaretVisualPlacement.Generic);
});
}
