plugins/org.eclipse.gymnast.generators.parser.lpg/src/org/eclipse/gymnast/generators/parser/lpg/resources/dtParserTemplateB.g

--
-- An LPG Parser Template Using lpg.jar
--
--
-- B E G I N N I N G   O F   T E M P L A T E   dtParserTemplateB
--
-- In a parser using this template, the following macros may be redefined:
--
--     $import_classes
--     $action_class
--     $additional_interfaces
--     $ast_class
--
%Options programming_language=java,margin=4
%Options table,error_maps,scopes
%options action=("*.java", "/.", "./")
%options ParseTable=lpg.lpgjavaruntime.ParseTable

$Notice /.$copyright./

$Define

    $copyright /../

    $Header
    /.
                //
                // Rule $rule_number:  $rule_text
                //./

    $BeginAction
    /. $Header
                case $rule_number: {./

    $EndAction
    /.          break;
                }./

    $BeginJava
    /.$BeginAction
                    $symbol_declarations./

    $EndJava /.$EndAction./

    $NoAction
    /. $Header
                case $rule_number:
                    break;./

    $NullAction
    /. $Header
                case $rule_number:
                    $setResult(null);
                    break;./

    $BeginActions
    /.
        public void ruleAction(int ruleNumber)
        {
            switch (ruleNumber)
            {./

    $SplitActions
    /.
	            default:
	                ruleAction$rule_number(ruleNumber);
	                break;
	        }
	        return;
	    }
	
	    public void ruleAction$rule_number(int ruleNumber)
	    {
	        switch (ruleNumber)
	        {./

    $EndActions
    /.
                default:
                    break;
            }
            return;
        }./

    $import_classes /../
    $action_class /.$action_type./
    $additional_interfaces /../
    $ast_class /.$ast_type./
    $setSym1 /.getParser().setSym1./
    $setResult /.getParser().setSym1./
    $getSym /.getParser().getSym./
    $getToken /.getParser().getToken./
    $getIToken /.getIToken./
    $getLeftSpan /.getParser().getFirstToken./
    $getRightSpan /.getParser().getLastToken./
    $prs_stream /.prsStream./
$End

$Headers
    /.
    $copyright
    $import_classes
    import lpg.lpgjavaruntime.*;

    public class $action_class extends PrsStream implements RuleAction$additional_interfaces
    {
        private static ParseTable prs = new $prs_type();
        private DeterministicParser dtParser;

        public DeterministicParser getParser() { return dtParser; }
        private void setResult(Object object) { dtParser.setSym1(object); }
        public Object getRhsSym(int i) { return dtParser.getSym(i); }

        public int getRhsTokenIndex(int i) { return dtParser.getToken(i); }
        public IToken getRhsIToken(int i) { return super.getIToken(getRhsTokenIndex(i)); }
        
        public int getRhsFirstTokenIndex(int i) { return dtParser.getFirstToken(i); }
        public IToken getRhsFirstIToken(int i) { return super.getIToken(getRhsFirstTokenIndex(i)); }

        public int getRhsLastTokenIndex(int i) { return dtParser.getLastToken(i); }
        public IToken getRhsLastIToken(int i) { return super.getIToken(getRhsLastTokenIndex(i)); }

        public int getLeftSpan() { return dtParser.getFirstToken(); }
        public IToken getLeftIToken()  { return super.getIToken(getLeftSpan()); }

        public int getRightSpan() { return dtParser.getLastToken(); }
        public IToken getRightIToken() { return super.getIToken(getRightSpan()); }

        public int getRhsErrorTokenIndex(int i)
        {
            int index = dtParser.getToken(i);
            IToken err = super.getIToken(index);
            return (err instanceof ErrorToken ? index : 0);
        }
        public ErrorToken getRhsErrorIToken(int i)
        {
            int index = dtParser.getToken(i);
            IToken err = super.getIToken(index);
            return (ErrorToken) (err instanceof ErrorToken ? err : null);
        }

        public $action_class(LexStream lexStream)
        {
            super(lexStream);

            try
            {
                super.remapTerminalSymbols(orderedTerminalSymbols(), $prs_type.EOFT_SYMBOL);
            }
            catch(NullExportedSymbolsException e) {
            }
            catch(NullTerminalSymbolsException e) {
            }
            catch(UnimplementedTerminalsException e)
            {
                java.util.ArrayList unimplemented_symbols = e.getSymbols();
                System.out.println("The Lexer will not scan the following token(s):");
                for (int i = 0; i < unimplemented_symbols.size(); i++)
                {
                    Integer id = (Integer) unimplemented_symbols.get(i);
                    System.out.println("    " + $sym_type.orderedTerminalSymbols[id.intValue()]);               
                }
                System.out.println();                        
            }
            catch(UndefinedEofSymbolException e)
            {
                System.out.println("The Lexer does not implement the Eof symbol " +
                                   $sym_type.orderedTerminalSymbols[$prs_type.EOFT_SYMBOL]);
                System.exit(12);
            } 
        }
 
        public String[] orderedTerminalSymbols() { return $sym_type.orderedTerminalSymbols; }
        public String getTokenKindName(int kind) { return $sym_type.orderedTerminalSymbols[kind]; }            
        public int getEOFTokenKind() { return $prs_type.EOFT_SYMBOL; }
        public PrsStream getParseStream() { return (PrsStream) this; }

        public $ast_class parser()
        {
            return parser(null, 0);
        }
            
        public $ast_class parser(Monitor monitor)
        {
            return parser(monitor, 0);
        }
            
        public $ast_class parser(int error_repair_count)
        {
            return parser(null, error_repair_count);
        }
            
        public $ast_class parser(Monitor monitor, int error_repair_count)
        {
            try
            {
                dtParser = new DeterministicParser(monitor, (TokenStream)this, prs, (RuleAction)this);
            }
            catch (NotDeterministicParseTableException e)
            {
                System.out.println("****Error: Regenerate $prs_type.java with -NOBACKTRACK option");
                System.exit(1);
            }
            catch (BadParseSymFileException e)
            {
                System.out.println("****Error: Bad Parser Symbol File -- $sym_type.java. Regenerate $prs_type.java");
                System.exit(1);
            }

            try
            {
                return ($ast_class) dtParser.parse();
            }
            catch (BadParseException e)
            {
                reset(e.error_token); // point to error token

                DiagnoseParser diagnoseParser = new DiagnoseParser(this, prs);
                diagnoseParser.diagnose(e.error_token);
            }

            return null;
        }

    ./

$End

$Rules
    /.$BeginActions./
$End

$Trailers
    /.
        $EndActions
    }
    ./
$End

--
-- E N D   O F   T E M P L A T E
--