ANTLR - SWIFT fields parser

grammar SwiftBlock;

@header {
package generated;
import java.util.Map;
import java.util.HashMap;
}

@lexer::header {
package generated;
}

@members {
HashMap message = new HashMap();

public Map<String,String> getMessage(){
  return message;
}

}
message : block+;

block : '{' '1' ':' expr {System.out.println("expr1=" + $expr.text);} '}'   |
        '{' '2' ':' expr {System.out.println("expr2=" + $expr.text);} '}' |
        '{' '3' ':' expr3*  '}' |
        '{' '4' ':' expr4+ '}' |
        '{' '5' ':' expr5+  '}' ;
   
expr3 : '{' key ':' expr '}' {System.out.println("expr3=" + $expr3.text);message.put($key.text,$expr.text);} ;

expr4 : ('\n'|'\r')+  (':' key ':' expr  {System.out.println("expr4=" + $expr.text); message.put($key.text,$expr.text);} | '-')+;

expr5 : ('\n'|'\r')+ '{' key ':' expr '}' {System.out.println("expr5=" + $expr.text);message.put($key.text,$expr.text);} ;

key :    FIELDVALUE* {System.out.println("key=" + $key.text);} ; 
expr :   FIELDVALUE* {System.out.println("expr=" + $expr.text);} ; 


/*------------------------------------------------------------------
 * LEXER RULES
 *------------------------------------------------------------------*/
 FIELDVALUE :  (~('-'|':'|'}'|'{'))+; 

Compile grammar

java -cp /app/antlr-3.3/lib/antlr-3.3-complete.jar org.antlr.Tool -o generated SwiftBlock.g 

Test program

import generated.SwiftBlockLexer;
import generated.SwiftBlockParser;

import java.io.FileInputStream;
import java.util.Map;

import org.antlr.runtime.ANTLRInputStream;
import org.antlr.runtime.CommonTokenStream;

public class AntlrSwiftBlock {
    public static void main(String[] args) throws Exception {
        FileInputStream fileInputStream = new FileInputStream("/home/dave/workspace/wls1033/testAntlr/src/swift.txt");
        ANTLRInputStream input = new ANTLRInputStream(fileInputStream);
        SwiftBlockLexer lexer = new SwiftBlockLexer(input);
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        SwiftBlockParser parser = new SwiftBlockParser(tokens);
        parser.message();
        
        System.out.println("Message:");
        
        for(Map.Entry<String,String> entry : parser.getMessage().entrySet()){
            System.out.println(entry);
        }
    }
}

SWIFT message

{1:F01AAAABB99BSMK3513951576}{2:O9400934081223BBBBAA33XXXX03592332770812230834N}{3:{113:xxxx}{108:abcdefgh12345678}}{4:
:20:0112230000000890
:25:SAKG800030155USD
:28C:255/1
:60F:C011223USD175768,92
:61:0112201223CD110,92NDIVNONREF//08 IL053309 
 /GB/2542049/SHS/312,
:62F:C011021USD175879,84
-}{5:
{CHK:0F4E5614DD28}
{MAC:0F4E5614DD28}}

Result output

Message:
20=0112230000000890

62F=C011021USD175879,84

113=xxxx
CHK=0F4E5614DD28
108=abcdefgh12345678
25=SAKG800030155USD

MAC=0F4E5614DD28
60F=C011223USD175768,92

61=0112201223CD110,92NDIVNONREF//08 IL053309 
 /GB/2542049/SHS/312,

28C=255/1