java_cup

Class parser

java.lang.Object

java_cup.runtime.lr_parser

java_cup.parser

public class parser
extends java_cup.runtime.lr_parser

Field Summary

Fields

Modifier and Type	Field and Description
protected static short[][]	_action_table parse action table
protected static short[][]	_production_table production table
protected static short[][]	_reduce_table reduce_goto table
protected java_cup.CUP$actions	action_obj instance of action encapsulation class

Fields inherited from class java_cup.runtime.lr_parser

_done_parsing, _error_sync_size, action_tab, cur_token, lookahead, lookahead_pos, production_tab, reduce_tab, stack, tos

Constructor Summary

Constructors

Constructor and Description
parser() constructor

Method Summary

Methods

Modifier and Type	Method and Description
short[][]	action_table() access to parse action table
java_cup.runtime.symbol	do_action(int act_num, java_cup.runtime.lr_parser parser, Stack stack, int top) invoke a user supplied parse action
int	EOF_sym() EOF symbol index
int	error_sym() error symbol index
protected void	init_actions() action encapsulation object initializer
short[][]	production_table() access to production table
short[][]	reduce_table() access to reduce_goto table
void	report_error(String message, Object info) Report a non fatal error (or warning).
void	report_fatal_error(String message, Object info) Report a fatal error.
java_cup.runtime.token	scan() scan to get the next token
int	start_production() start production
int	start_state() start state
void	user_init() user initialization

Methods inherited from class java_cup.runtime.lr_parser

advance_lookahead, cur_err_token, debug_message, debug_parse, debug_reduce, debug_shift, done_parsing, dump_stack, error_recovery, error_sync_size, find_recovery_config, get_action, get_reduce, parse_lookahead, parse, read_lookahead, restart_lookahead, shift_under_error, syntax_error, try_parse_ahead, unrecovered_syntax_error

Methods inherited from class java.lang.Object

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

Field Detail

_production_table

protected static final short[][] _production_table

production table

_action_table

protected static final short[][] _action_table

parse action table

_reduce_table

protected static final short[][] _reduce_table

reduce_goto table

action_obj

protected java_cup.CUP$actions action_obj

instance of action encapsulation class

Constructor Detail

parser

public parser()

constructor

Method Detail

production_table

public short[][] production_table()

access to production table

Specified by:

production_table in class java_cup.runtime.lr_parser

action_table

public short[][] action_table()

access to parse action table

Specified by:

action_table in class java_cup.runtime.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 java_cup.runtime.lr_parser

See Also:

lr_parser.get_reduce(int, int)

init_actions

protected void init_actions()

action encapsulation object initializer

Specified by:

init_actions in class java_cup.runtime.lr_parser

do_action

public java_cup.runtime.symbol do_action(int act_num,
                                java_cup.runtime.lr_parser parser,
                                Stack stack,
                                int top)
                                  throws Exception

invoke a user supplied parse action

Specified by:

do_action in class java_cup.runtime.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:

Exception

start_state

public int start_state()

start state

Specified by:

start_state in class java_cup.runtime.lr_parser

start_production

public int start_production()

start production

Specified by:

start_production in class java_cup.runtime.lr_parser

EOF_sym

public int EOF_sym()

EOF symbol index

Specified by:

EOF_sym in class java_cup.runtime.lr_parser

error_sym

public int error_sym()

error symbol index

Specified by:

error_sym in class java_cup.runtime.lr_parser

user_init

public void user_init()
               throws Exception

user initialization

Overrides:

user_init in class java_cup.runtime.lr_parser

Throws:

Exception

scan

public java_cup.runtime.token scan()
                            throws Exception

scan to get the next token

Specified by:

scan in class java_cup.runtime.lr_parser

Throws:

Exception

report_fatal_error

public void report_fatal_error(String message,
                      Object info)

Description copied from class: java_cup.runtime.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 java_cup.runtime.lr_parser

Parameters:

message - an error message.

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

report_error

public void report_error(String message,
                Object info)

Description copied from class: java_cup.runtime.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 java_cup.runtime.lr_parser

Parameters:

message - an error message.

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