grammar org.xtext.example.mydsl1.MyDsl with org.eclipse.xtext.common.Terminals

generate myDsl ""

START:	
	{START}
	features += (NUM_SYMBOL | STR_SYMBOL | VARIABLE | STRING_VARIABLE | SET)*';'
;

//Declaration
VARIABLE:
	'VARIABLE' name=ID ('[' INT ']' ('[' INT ']')* )? '=' content = ID ';'
;
        
STRING_VARIABLE:
       'STRING' name=ID '=' STRING ';'
;

NUM_SYMBOL:
	'NUM SYMBOL' ID '=' content = ID ';'
;

STR_SYMBOL:
	'SYMBOL' name = ID '=' content = ID ';'
;

//Definition (or assignments, can either be string or number)
SET: 
	'SET' (VAR_ASSIGNMENT | STRING_ASSIGNMENT) ';'
;

//array assignment works too
VAR_ASSIGNMENT:
	name = [VARIABLE] ('[' INT ']' ('[' INT ']')* )? '=' ASSIGNED_VALUE
;

ASSIGNED_VALUE:
	{ASSIGNED_VALUE}
	INT | name = [NUM_SYMBOL]
	;

STRING_ASSIGNMENT:
	name = [STRING_VARIABLE] '=' (STRING | ref = STR_SYMB_REF)
;

STR_SYMB_REF:
	name = [STR_SYMBOL]
;

/* Declare */
int var1;
String var2;

/* Define */
//This assignment should refer to declared var1 (integer declaration only)
var1 = 10;

//This assignment should refer to declared var2 (string declaration only)
var2 = "Test";

constraint is INVALID for context SET and type VAR_ASSIGNMENT
constraint is INVALID for context VAR_ASSIGNMENT and type VAR_ASSIGNMENT

warning(200): ../org.xtext.example.mydsl/src-gen/org/xtext/example/mydsl/parser/antlr/internal/InternalMyDsl.g:468:1: Decision can match input such as "RULE_ID '=' RULE_ID" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input

warning(200): ../org.xtext.example.mydsl.ui/src-gen/org/xtext/example/mydsl/ui/contentassist/antlr/internal/InternalMyDsl.g:442:1: Decision can match input such as "RULE_ID '=' RULE_ID" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input