Ast.TextElement _GetTextElement(FtlParserStream ps)
{
var buffer = new StringBuilder();
int ch;
while ((ch = ps.Current) != Eof)
{
if (ch == '{')
{
return(new Ast.TextElement(buffer.ToString()));
}
if (ch == '\r' || ch == '\n')
{
if (!ps.IsPeekNextLineValue())
{
return(new Ast.TextElement(buffer.ToString()));
}
ps.SkipNewLine();
ps.SkipInlineWs();
// Add the new line to the buffer
buffer.Append((char)ch);
continue;
}
if (ch == '\\')
{
ps.Next();
GetEscapeSequence(ps,
new int[] { '{', '\\' }, buffer);
continue;
}
buffer.Append((char)ps.Current);
ps.Next();
}
return(new Ast.TextElement(buffer.ToString()));
}
Ast.Pattern _GetPattern(FtlParserStream ps)
{
var elements = new List <Ast.SyntaxNode>();
ps.SkipInlineWs();
int ch;
while ((ch = ps.Current) != Eof)
{
// The end condition for GetPattern's while loop is a newline
// which is not followed by a valid pattern continuation.
if (ps.IsPeekNewLine() && !ps.IsPeekNextLineValue())
{
break;
}
if (ch == '{')
{
var element = GetPlaceable(ps);
elements.Add(element);
}
else
{
var element = GetTextElement(ps);
elements.Add(element);
}
}
// Trim trailing whitespace.
if (elements.Count > 0 &&
elements[elements.Count - 1] is Ast.TextElement te)
{
te.Value = TrimRight(te.Value);
}
return(new Ast.Pattern(elements));
}
