grammar SCJSON;

root returns [java.util.ArrayList local]
    : exp = array { $local = $exp.local; }
    ;


array returns [java.util.ArrayList local]
    :   '{'      { $local = new java.util.ArrayList(); }
        v1=value { $local.add($v1.local); }
        (';' 
        v2=value { $local.add($v2.local); }
        )* 
        '}' 
    ;

value returns [Object local]
    :   s=STRING {$local = $s.text;}
    |   n=NUMBER {$local = new java.math.BigDecimal($n.text);}
    |   a=array  {$local = $a.local;} // recursion
    ;

STRING :  '[' (~']')* ']' ;
NUMBER
    :   '-'? INT '.' INT // 1.35, 0.3, -4.5
    |   '-'? INT                 // -3, 45
    ;
fragment INT :   [0-9]+ ; // no leading zeros
WS  :   [ \t\n\r]+ -> skip ;

		<java classpathref="build.classpath" classname="org.antlr.v4.Tool" fork="true" failonerror="true">
			<arg value="src/SCJSON.g"/>
			<arg value="-o"/>
			<arg value="${src}/scjson/parser"/>
			<arg value="-package"/>
			<arg value="scjson.parser"/>
		</java>

import org.antlr.v4.runtime.*;
import scjson.parser.SCJSONLexer;
import scjson.parser.SCJSONParser;

public class Main{
	public static void main(String [] arg)throws Exception{
		CharStream in = new ANTLRFileStream("./test.txt","UTF-8");
		SCJSONLexer lexer = new SCJSONLexer(in);
		CommonTokenStream tokens = new CommonTokenStream(lexer);
		SCJSONParser parser = new SCJSONParser(tokens);
		System.out.println( ">>>"+parser.root().local );
	}
}