public static ExpressionSyntax ParseExpression(string text)
{
SyntaxTree syntaxTree = SyntaxTree.Parse(text);
CompilationUnitSyntax root = syntaxTree.Root;
MemberSyntax member = Assert.Single(root.Members);
GlobalStatementSyntax globalStatement = Assert.IsType <GlobalStatementSyntax>(member);
return(Assert.IsType <ExpressionStatementSyntax>(globalStatement.Statement).Expression);
}
private ImmutableArray <MemberSyntax> ParseMembers()
{
var members = ImmutableArray.CreateBuilder <MemberSyntax>();
while (Current.Kind != SyntaxKind.EndOfFileToken)
{
SyntaxToken startToken = Current;
MemberSyntax member = ParseMember();
members.Add(member);
if (Current == startToken)
{
NextToken();
}
}
return(members.ToImmutable());
}