something.xtext

grammar org.xtext.example.demo.Demo with org.eclipse.xtext.common.Terminals

generate demo "http://www.xtext.org/example/demo/Demo"

Model :
 	(elements+=Type)*;
      
Type:
	DataType //| Statement | Condition
;
//Datatype Grammar
DataType:
	Arithmatic | Character | Bit | Pointer | Label | Entry
;
//Rules for Arithmatic declaration.
Arithmatic:
	Integer | HwordInteger | Logical | HwordLogical | Byte
;

Integer:
	"DCL" (name=ID("("INT")")?) "INTEGER" ";"
;
HwordInteger:
	"DCL" ("CI")? (name=ID("("INT")")?) "HWORD_INTEGER" ";"
;
// Logical HwordLogical and Byte are yet to be defined. 
Logical:
	name=ID ";"
;
HwordLogical:
	name=ID ";"
;
Byte:
	name=ID ";"
;

//Rules for Character type Declaration
Character:
	"DCL" (name=ID("("INT")")?) "CHAR" ";"
;
// Rules for BIT type
Bit:
	name=ID ";"
;
// Rules for Pointer type
Pointer:
	name=ID ";"
;
// Rules for Label type
Label:
	name=ID ";"
;
// Rules for Entry type
Entry:
	name=ID ";"