//default
private static IIndentationGrammarAnalysis <SyntaxToken, SyntaxNode, GNode> match <GNode, TParent, T>(
IIndentationGrammarAnalysis <SyntaxToken, SyntaxNode, GNode> self,
Func <string, Scope, T> parser,
Action <IIndentationGrammarAnalysis <SyntaxToken, SyntaxNode, GNode> > children,
Action <TParent, T> then) where T : GNode, new()
{
return(self.match <TParent, T>((text, parent, scope) =>
{
var result = parser(text, scope);
if (result != null && then != null)
{
then(parent, result);
}
return result;
}, children));
}
//roslyn
public static IIndentationGrammarAnalysis <SyntaxToken, SyntaxNode, GNode> match <GNode, TParent, T>(
this IIndentationGrammarAnalysis <SyntaxToken, SyntaxNode, GNode> self,
Action <TParent, T> then,
Action <IIndentationGrammarAnalysis <SyntaxToken, SyntaxNode, GNode> > children = null)
where T : SyntaxNode
where GNode : new()
{
return(self.match <TParent, GNode>((text, parent, scope) =>
{
var expr = CSharp.ParseExpression(text) as T;
var statement = expr == null
? CSharp.ParseStatement(text) as T
: default(T);
var result = statement ?? expr;
if (result != null && !result.ContainsDiagnostics)
{
then(parent, result);
return new GNode();
}
return default(GNode);
}, children));
}