jflex

Class LexParse

java.lang.Object

java_cup.runtime.lr_parser

jflex.LexParse

public class LexParse
extends lr_parser

CUP v0.11b 20150226 (SVN rev 63) generated 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 jflex.LexParse.CUP$LexParse$actions	action_obj Instance of action encapsulation class.
LexScan	scanner

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, symbolFactory, tos

Constructor Summary

Constructors

Constructor and Description
LexParse() Default constructor.
LexParse(LexScan scanner)
LexParse(Scanner s) Constructor which sets the default scanner.
LexParse(Scanner s, SymbolFactory sf) Constructor which sets the default scanner.

Method Summary

Methods

Modifier and Type	Method and Description
short[][]	action_table() Access to parse-action table.
Symbol	do_action(int act_num, 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.
CharClasses	getCharClasses()
EOFActions	getEOFActions()
Class	getSymbolContainer() We need this Method in order to resolve names for symbol IDs
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) Override lr_parser.report_error to use JFlex reporting.
void	report_fatal_error(String message, Object info) Override lr_parser.report_fatal_error to use JFlex reporting.
int	start_production() Indicates start production.
int	start_state() Indicates start state.
void	syntax_error(Symbol cur_token) Override syntax_error to not report expected tokens, just error message.
void	user_init() User initialization code.

Methods inherited from class java_cup.runtime.lr_parser

advance_lookahead, cur_err_token, debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, done_parsing, dump_stack, error_recovery, error_sync_size, expected_token_ids, find_recovery_config, get_action, get_reduce, getScanner, getSymbolFactory, parse_lookahead, parse, read_lookahead, report_expected_token_ids, restart_lookahead, scan, setScanner, shift_under_error, symbl_name_from_id, try_parse_ahead, unpackFromStrings, 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 jflex.LexParse.CUP$LexParse$actions action_obj

Instance of action encapsulation class.

scanner

public LexScan scanner

Constructor Detail

LexParse

public LexParse()

Default constructor.

LexParse

public LexParse(Scanner s)

Constructor which sets the default scanner.

LexParse

public LexParse(Scanner s,
        SymbolFactory sf)

Constructor which sets the default scanner.

LexParse

public LexParse(LexScan scanner)

Method Detail

getSymbolContainer

public final Class getSymbolContainer()

Description copied from class: lr_parser

We need this Method in order to resolve names for symbol IDs

Overrides:

getSymbolContainer in class lr_parser

Returns:

the class that keeps all the symbols

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)

init_actions

protected void init_actions()

Action encapsulation object initializer.

Specified by:

init_actions in class lr_parser

do_action

public Symbol do_action(int act_num,
               lr_parser parser,
               Stack stack,
               int top)
                 throws 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:

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 Exception

User initialization code.

Overrides:

user_init in class lr_parser

Throws:

Exception

getCharClasses

public CharClasses getCharClasses()

getEOFActions

public EOFActions getEOFActions()

syntax_error

public void syntax_error(Symbol cur_token)

Override syntax_error to not report expected tokens, just error message. TODO: reporting expected tokens using their actual surface syntax would be useful. Would need a reverse mapping of terminals or similar.

Overrides:

syntax_error in class lr_parser

Parameters:

cur_token - the current lookahead Symbol.

report_error

public void report_error(String message,
                Object info)

Override lr_parser.report_error to use JFlex reporting.

Overrides:

report_error in class lr_parser

Parameters:

message - an error message.

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

report_fatal_error

public void report_fatal_error(String message,
                      Object info)

Override lr_parser.report_fatal_error to use JFlex reporting.

Overrides:

report_fatal_error in class lr_parser

Parameters:

message - an error message.

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