/* 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.segmentchunk

use com.livecode.foreign

public foreign handler FetchSegmentOf(in Index as index, in Target as string, out Value as string) returns nothing binds to "<builtin>"
public foreign handler StoreSegmentOf(in Value as string, in Index as index, inout Target as string) returns nothing binds to "<builtin>"
public foreign handler FetchSegmentRangeOf(in Start as index, in Finish as index, in Target as data, out Value as string) returns nothing binds to "<builtin>"
public foreign handler StoreSegmentRangeOf(in Value as string, in Start as index, in Finish as index, inout Target as string) returns nothing binds to "<builtin>"

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

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

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

--

syntax SingletonSegmentOf is prefix operator with precedence 1
	"segment" <Index: Expression> "of" <Target: Expression>
begin
	FetchSegmentOf(Index, Target, output)
	StoreSegmentOf(input, Index, Target)
end syntax

syntax RangeSegmentOf is prefix operator with precedence 1
	"segment" <Start: Expression> "to" <Finish: Expression> "of" <Target: Expression>
begin
	FetchSegmentRangeOf(Start, Finish, Target, output)
	StoreSegmentRangeOf(input, Start, Finish, Target)
end syntax

syntax CountSegmentsOf is prefix operator with precedence 1
	"the" "number" "of" "segments" "in" <Target: Expression>
begin
	EvalNumberOfSegmentsIn(Target, output)
end syntax

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

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

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

--

end module