/// <exception cref="ParseException">Token '{0}' not expected in object declaration</exception>
private Tailcall ParseItemsInDictionary(ObjectNode context, Continuation onComplete = null, bool justOneItem = false, string prefix = null)
{
switch (NextAfter(justOneItem ? WhiteSpaceOrComments : WhiteSpaceCommentsOrSemicolons, onComplete != null))
{
case TokenType.Identifier:
if (Data == "@alias")
{
ParseAlias(context);
return(ParseItemsInDictionary(context, onComplete, prefix: prefix));
}
break;
case TokenType.Pound:
// metadata entry
ParseMetadataItem(context);
return(ParseItemsInDictionary(context, onComplete, prefix: prefix));
case TokenType.OpenParenthesis:
//var iValue = ParseMatrixForEach(context, Semicolon, new ObjectIterator(context, new SourceLocation(Token, Filename)){Prefix = prefix ?? (context.IndexValue-1).ToString()});
// iValue is the ObjectIterator.
var n = new ExpansionPropertyNode();
context.Properties[Guid.NewGuid().ToString()] = n; // unique node for the item
n.ObjectIterator = ParseMatrixForEach(context, Semicolon, new ObjectIterator(context, new SourceLocation(Token, Filename))
{
Prefix = prefix ?? (context.CurrentIndex).ToString()
}) as ObjectIterator;
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
case TokenType.CloseBrace:
return((onComplete ?? Continue)());
case TokenType.Eof:
// we should only get here if we discovered the EOF outside of anything.
return(onComplete);
}
Rewind();
var selector = ParseSelector(MemberTerminator);
if (selector.Name.StartsWith("."))
{
selector = new Selector((prefix ?? string.Empty) + context.NextIndexValue + selector.Name, selector.Parameter, selector.SourceLocation);
}
switch (Type)
{
case TokenType.Dot:
case TokenType.Identifier: {
// if we're pointing to an identifier or a dot, we're about to take whatever is next, and include it in a dictionary as a way of syntatic sugar.
return(ParseItemsInDictionary(context.Children[selector], () => ParseItemsInDictionary(context, onComplete, prefix: prefix), true));
}
case TokenType.OpenBrace: {
if (justOneItem)
{
return(ParseItemsInDictionary(context.Children[selector], (onComplete ?? Continue)));
}
return(ParseItemsInDictionary(context.Children[selector], () => ParseItemsInDictionary(context, onComplete, prefix: prefix)));
}
case TokenType.Colon: {
var p = context.Properties[selector];
p.SetCollection(ParseRValue(context, SemicolonCommaOrCloseBrace, p));
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
}
case TokenType.PlusEquals: {
var p = context.Properties[selector];
p.AddToCollection(ParseRValue(context, Semicolon, p));
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
}
// same as the part in ParseItemAsDictionary()
case TokenType.EmbeddedInstruction:
var n = context.Children[selector];
n.SetNodeValue(new Instruction(n, Token.Data, new SourceLocation(Token, Filename)));
if (NextAfter(WhiteSpaceOrComments) == TokenType.Semicolon)
{
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
}
throw Fail(ErrorCode.TokenNotExpected, "Token '{0}' not expected after Instruction. Looking for ';'");
// same as the part in ParseItemAsDictionary()
case TokenType.ColonEquals:
// expecting one of:
// - an object declaration { }
// - an instruction
// - an RValue to be used as the value source for an object.
switch (NextAfter(WhiteSpaceOrComments))
{
case TokenType.OpenBrace:
if (justOneItem)
{
return(ParseItemsInDictionary(context.Children[selector], (onComplete ?? Continue)));
}
return(ParseItemsInDictionary(context.Children[selector], () => ParseItemsInDictionary(context, onComplete, prefix: prefix)));
case TokenType.EmbeddedInstruction:
var no = context.Children[selector];
no.SetNodeValue(new Instruction(no, Token.Data, new SourceLocation(Token, Filename)));
if (NextAfter(WhiteSpaceOrComments) == TokenType.Semicolon)
{
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
}
throw Fail(ErrorCode.TokenNotExpected, "Token '{0}' not expected after Instruction. Looking for ';'");
}
// hmm. didn't seem to be one of the first two types. Try to grab it as an RValue then.
Rewind();
context.SetNodeValue(ParseRValue(context, Semicolon, context));
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
case TokenType.Equal: {
var p = context.Properties[selector];
p.SetValue(ParseRValue(context, SemicolonCommaOrCloseBrace, p));
return(justOneItem ? (onComplete ?? Continue)() : ParseItemsInDictionary(context, onComplete, prefix: prefix));
}
}
throw Fail(ErrorCode.TokenNotExpected, "Token '{0}' not expected in object declaration");
}
internal ObjectNode(ObjectNode parent, Selector selector) : this()
{
Parent = parent;
Selector = selector;
}