java_cup
Class parser

java.lang.Object
  java_cup.runtime.lr_parser
      java_cup.parser

public class parser
extends lr_parser

CUP v0.10k generated parser.

Version:

Sun Jul 25 13:35:26 EDT 1999

Constructor Summary

parser()
Default constructor.

parser(Scanner s)
Constructor which sets the default scanner.

Method Summary

short[][]	action_table() Access to parse-action table.
Symbol	do_action(int act_num, lr_parser parser, java.util.Stack stack, int top) Invoke a user supplied parse action.
int	EOF_sym() EOF Symbol index.
int	error_sym() error Symbol index.
short[][]	production_table() Access to production table.
short[][]	reduce_table() Access to reduce_goto table.
void	report_error(java.lang.String message, java.lang.Object info) Report a non fatal error (or warning).
void	report_fatal_error(java.lang.String message, java.lang.Object info) Report a fatal error.
Symbol	scan() Scan to get the next Symbol.
int	start_production() Indicates start production.
int	start_state() Indicates start state.
void	user_init() User initialization code.

Methods inherited from class java_cup.runtime.lr_parser

debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, done_parsing, dump_stack, getScanner, parse, setScanner, syntax_error, unrecovered_syntax_error

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

parser

public parser()

Default constructor.

parser

public parser(Scanner s)

Constructor which sets the default scanner.

Method Detail

production_table

public short[][] production_table()

Access to production table.

Specified by:

production_table in class lr_parser

action_table

public short[][] action_table()

Access to parse-action table.

Specified by:

action_table in class lr_parser

See Also:

lr_parser.get_action(int, int)

reduce_table

public short[][] reduce_table()

Access to reduce_goto table.

Specified by:

reduce_table in class lr_parser

See Also:

lr_parser.get_reduce(int, int)

do_action

public Symbol do_action(int act_num,
                        lr_parser parser,
                        java.util.Stack stack,
                        int top)
                 throws java.lang.Exception

Invoke a user supplied parse action.

Specified by:

do_action in class lr_parser

Parameters:

act_num - the internal index of the action to be performed.

parser - the parser object we are acting for.

stack - the parse stack of that object.

top - the index of the top element of the parse stack.

Throws:

java.lang.Exception

start_state

public int start_state()

Indicates start state.

Specified by:

start_state in class lr_parser

start_production

public int start_production()

Indicates start production.

Specified by:

start_production in class lr_parser

EOF_sym

public int EOF_sym()

EOF Symbol index.

Specified by:

EOF_sym in class lr_parser

error_sym

public int error_sym()

error Symbol index.

Specified by:

error_sym in class lr_parser

user_init

public void user_init()
               throws java.lang.Exception

User initialization code.

Overrides:

user_init in class lr_parser

Throws:

java.lang.Exception

scan

public Symbol scan()
            throws java.lang.Exception

Scan to get the next Symbol.

Overrides:

scan in class lr_parser

Throws:

java.lang.Exception

report_fatal_error

public void report_fatal_error(java.lang.String message,
                               java.lang.Object info)

Description copied from class: lr_parser

Report a fatal error. This method takes a message string and an additional object (to be used by specializations implemented in subclasses). Here in the base class a very simple implementation is provided which reports the error then throws an exception.

Overrides:

report_fatal_error in class lr_parser

Parameters:

message - an error message.

info - an extra object reserved for use by specialized subclasses.

report_error

public void report_error(java.lang.String message,
                         java.lang.Object info)

Description copied from class: lr_parser

Report a non fatal error (or warning). This method takes a message string and an additional object (to be used by specializations implemented in subclasses). Here in the base class a very simple implementation is provided which simply prints the message to System.err.

Overrides:

report_error in class lr_parser

Parameters:

message - an error message.

info - an extra object reserved for use by specialized subclasses.