/* Copyright (C) 2003-2013 Runtime Revolution Ltd.
 
 This file is part of LiveCode.
 
 LiveCode is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License v3 as published by the Free
 Software Foundation.
 
 LiveCode is distributed in the hope that it will be useful, but WITHOUT ANY
 WARRANTY; without even the implied warranty of MERCHANTABILITY or
 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License
 along with LiveCode.  If not see <http://www.gnu.org/licenses/>.  */

module com.livecode.item

use com.livecode.foreign

public foreign handler FetchItemOf(in Index as index, in Target as string, out Value as string) returns nothing binds to "<builtin>"
public foreign handler StoreItemOf(in Value as string, in Index as index, inout Target as string) returns nothing binds to "<builtin>"
public foreign handler FetchItemRangeOf(in Start as index, in Finish as index, in Target as data, out Value as string) returns nothing binds to "<builtin>"
public foreign handler StoreItemRangeOf(in Value as string, in Start as index, in Finish as index, inout Target as string) returns nothing binds to "<builtin>"

public foreign handler EvalNumberOfItemsIn(in Target as string, out Count as index) returns nothing binds to "<builtin>"

public foreign handler EvalIsAmongTheItemsOf(in Needle as string, in Target as string, out Result as bool) returns nothing binds to "<builtin>"
public foreign handler EvalIsNotAmongTheItemsOf(in Needle as string, in Target as string, out Result as bool) returns nothing binds to "<builtin>"

public foreign handler EvalOffsetOfItemIn(in Needle as string, in Target as string, out Offset as index) returns nothing binds to "<builtin>"

--

syntax SingletonItemOf is prefix operator with precedence 1
	"item" <Index: Expression> "of" <Target: Expression>
begin
	FetchItemOf(Index, Target, output)
	StoreItemOf(input, Index, Target)
end syntax

syntax RangeItemOf is prefix operator with precedence 1
	"item" <Start: Expression> "to" <Finish: Expression> "of" <Target: Expression>
begin
	FetchItemRangeOf(Start, Finish, Target, output)
	StoreItemRangeOf(input, Start, Finish, Target)
end syntax

syntax CountItemsOf is prefix operator with precedence 1
	"the" "number" "of" "items" "in" <Target: Expression>
begin
	EvalNumberOfItemsIn(Target, output)
end syntax

syntax AmongItemsOf is left binary operator with precedence 1
	<Needle: Expression> "is" "among" "the" "items" "of" <Target: Expression>
begin
	EvalIsAmongTheItemsOf(Needle, Target, output)
end syntax

syntax NotAmongItemsOf is left binary operator with precedence 1
	<Needle: Expression> "is" "not" "among" "the" "items" "of" <Target: Expression>
begin
	EvalIsNotAmongTheItemsOf(Needle, Target, output)
end syntax

syntax ItemOffset is prefix operator with precedence 1
	"the" "offset" "of" "item" <Needle: Expression> "in" <Target: Expression>
begin
	EvalOffsetOfItemIn(Needle, Target, output)
end syntax

--

end module