com.JLex
Class CLexGen

java.lang.Object
  com.JLex.CLexGen

 class CLexGen
extends java.lang.Object

Class: CLexGen

Field Summary

private JavaLexBitSet	all_states Function: getStates Description: Parses the state area of a rule, from the beginning of a line
(package private) static int	ANY
(package private) static int	AT_BOL
(package private) static int	AT_EOL
private static int	BUFFER_SIZE
(package private) static int	CCL_END
(package private) static int	CCL_START
private static int	CLASS_CODE
(package private) static int	CLOSE_CURLY
(package private) static int	CLOSE_PAREN
(package private) static int	CLOSURE
(package private) static int	DASH
(package private) static int	END_OF_INPUT
private static int	EOF_CODE
private static int	EOF_THROW_CODE
private static int	EOF_VALUE_CODE
(package private) static int	EOS Constants: Token Types
private static boolean	ERROR Constants
private static int	INIT_CODE
private static int	INIT_THROW_CODE
(package private) static int	L
private boolean	m_advance_stop Function: advance Description: Returns code for next token.
private char[]	m_char_dir
private char[]	m_class_code_dir
private char[]	m_class_code_end_dir
private char[]	m_class_dir
private char[]	m_cup_dir
private CEmit	m_emit
private char[]	m_eof_code_dir
private char[]	m_eof_code_end_dir
private char[]	m_eof_throw_code_dir
private char[]	m_eof_throw_code_end_dir
private char[]	m_eof_value_code_dir
private char[]	m_eof_value_code_end_dir
private char[]	m_full_dir
private char[]	m_function_dir
private char[]	m_ignorecase_dir
private char[]	m_implements_dir
private char[]	m_init_code_dir
private char[]	m_init_code_end_dir
private boolean	m_init_flag
private char[]	m_init_throw_code_dir
private char[]	m_init_throw_code_end_dir
private CInput	m_input
private java.io.InputStream	m_instream Member Variables
private char[]	m_integer_dir
private char[]	m_intwrap_dir
private char[]	m_line_dir
private CMakeNfa	m_makeNfa
private CMinimize	m_minimize
private CNfa2Dfa	m_nfa2dfa
private char[]	m_notunix_dir
private java.io.DataOutputStream	m_outstream
private char[]	m_public_dir
private CSpec	m_spec
private char[]	m_state_dir Member Variables: JLex directives.
private java.util.Hashtable	m_tokens
private char[]	m_type_dir
private char[]	m_unicode_dir
private char[]	m_yyeof_dir
private char[]	m_yylex_throw_code_dir
private char[]	m_yylex_throw_code_end_dir
private static boolean	NOT_ERROR
(package private) static int	OPEN_CURLY
(package private) static int	OPEN_PAREN
(package private) static int	OPTIONAL
(package private) static int	OR
(package private) static int	PLUS_CLOSE
private static int	YYLEX_THROW_CODE

Constructor Summary

CLexGen(java.lang.String filename)
Function: CLexGen

Method Summary

(package private) int	advance()
private void	details() Function: details Description: High level debugging routine.
private char	expandEscape() Function: expandEscape Description: Takes escape sequence and returns corresponding character code.
private boolean	expandMacro() Function: expandMacro Description: Returns false on error, true otherwise.
(package private) void	generate() Function: generate Description:
private char[]	getName() Function: getName
(package private) JavaLexBitSet	getStates()
private java.lang.String	interp_int(int i) Function: interp_int Description:
(package private) CAccept	packAccept() Function: packAccept Description: Packages and returns CAccept for action next in input stream.
private char[]	packCode(char[] start_dir, char[] end_dir, char[] prev_code, int prev_read, int specified) Function: packCode Description:
private java.lang.String	plab(CNfa state) Function: plab Description:
private void	print_header() Function: print_header
(package private) void	print_nfa() Function: print_nfa Description:
(package private) void	print_set(java.util.Vector nfa_set) function: print_set
private void	printccl(CSet set) Function: printccl Description: Debugging routine that outputs readable form of character class.
private void	saveMacro() Function: saveMacro Description: Saves macro definition of form: macro_name = macro_definition
private void	saveStates() Function: saveStates Description: Takes state declaration and makes entries for them in state hashtable in CSpec structure.
private void	userCode() Function: userCode Description: Process first section of specification, echoing it into output file.
private void	userDeclare() Function: userDeclare Description:
private void	userRules() Function: userRules Description: Processes third section of JLex specification and creates minimized transition table.

Methods inherited from class java.lang.Object

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

Field Detail

m_instream

private java.io.InputStream m_instream

Member Variables

m_outstream

private java.io.DataOutputStream m_outstream

m_input

private CInput m_input

m_tokens

private java.util.Hashtable m_tokens

m_spec

private CSpec m_spec

m_init_flag

private boolean m_init_flag

m_makeNfa

private CMakeNfa m_makeNfa

m_nfa2dfa

private CNfa2Dfa m_nfa2dfa

m_minimize

private CMinimize m_minimize

m_emit

private CEmit m_emit

ERROR

private static final boolean ERROR

Constants

See Also:

Constant Field Values

NOT_ERROR

private static final boolean NOT_ERROR

See Also:

Constant Field Values

BUFFER_SIZE

private static final int BUFFER_SIZE

See Also:

Constant Field Values

EOS

static final int EOS

Constants: Token Types

See Also:

Constant Field Values

ANY

static final int ANY

See Also:

Constant Field Values

AT_BOL

static final int AT_BOL

See Also:

Constant Field Values

AT_EOL

static final int AT_EOL

See Also:

Constant Field Values

CCL_END

static final int CCL_END

See Also:

Constant Field Values

CCL_START

static final int CCL_START

See Also:

Constant Field Values

CLOSE_CURLY

static final int CLOSE_CURLY

See Also:

Constant Field Values

CLOSE_PAREN

static final int CLOSE_PAREN

See Also:

Constant Field Values

CLOSURE

static final int CLOSURE

See Also:

Constant Field Values

DASH

static final int DASH

See Also:

Constant Field Values

END_OF_INPUT

static final int END_OF_INPUT

See Also:

Constant Field Values

L

static final int L

See Also:

Constant Field Values

OPEN_CURLY

static final int OPEN_CURLY

See Also:

Constant Field Values

OPEN_PAREN

static final int OPEN_PAREN

See Also:

Constant Field Values

OPTIONAL

static final int OPTIONAL

See Also:

Constant Field Values

OR

static final int OR

See Also:

Constant Field Values

PLUS_CLOSE

static final int PLUS_CLOSE

See Also:

Constant Field Values

CLASS_CODE

private static final int CLASS_CODE

See Also:

Constant Field Values

INIT_CODE

private static final int INIT_CODE

See Also:

Constant Field Values

EOF_CODE

private static final int EOF_CODE

See Also:

Constant Field Values

INIT_THROW_CODE

private static final int INIT_THROW_CODE

See Also:

Constant Field Values

YYLEX_THROW_CODE

private static final int YYLEX_THROW_CODE

See Also:

Constant Field Values

EOF_THROW_CODE

private static final int EOF_THROW_CODE

See Also:

Constant Field Values

EOF_VALUE_CODE

private static final int EOF_VALUE_CODE

See Also:

Constant Field Values

m_state_dir

private char[] m_state_dir

Member Variables: JLex directives.

m_char_dir

private char[] m_char_dir

m_line_dir

private char[] m_line_dir

m_cup_dir

private char[] m_cup_dir

m_class_dir

private char[] m_class_dir

m_implements_dir

private char[] m_implements_dir

m_function_dir

private char[] m_function_dir

m_type_dir

private char[] m_type_dir

m_integer_dir

private char[] m_integer_dir

m_intwrap_dir

private char[] m_intwrap_dir

m_full_dir

private char[] m_full_dir

m_unicode_dir

private char[] m_unicode_dir

m_ignorecase_dir

private char[] m_ignorecase_dir

m_notunix_dir

private char[] m_notunix_dir

m_init_code_dir

private char[] m_init_code_dir

m_init_code_end_dir

private char[] m_init_code_end_dir

m_init_throw_code_dir

private char[] m_init_throw_code_dir

m_init_throw_code_end_dir

private char[] m_init_throw_code_end_dir

m_yylex_throw_code_dir

private char[] m_yylex_throw_code_dir

m_yylex_throw_code_end_dir

private char[] m_yylex_throw_code_end_dir

m_eof_code_dir

private char[] m_eof_code_dir

m_eof_code_end_dir

private char[] m_eof_code_end_dir

m_eof_value_code_dir

private char[] m_eof_value_code_dir

m_eof_value_code_end_dir

private char[] m_eof_value_code_end_dir

m_eof_throw_code_dir

private char[] m_eof_throw_code_dir

m_eof_throw_code_end_dir

private char[] m_eof_throw_code_end_dir

m_class_code_dir

private char[] m_class_code_dir

m_class_code_end_dir

private char[] m_class_code_end_dir

m_yyeof_dir

private char[] m_yyeof_dir

m_public_dir

private char[] m_public_dir

all_states

private JavaLexBitSet all_states

Function: getStates Description: Parses the state area of a rule, from the beginning of a line. < state1, state2 ... > regular_expression { action } Returns null on only EOF. Returns all_states, initialized properly to correspond to all states, if no states are found. Special Notes: This function treats commas as optional and permits states to be spread over multiple lines.

m_advance_stop

private boolean m_advance_stop

Function: advance Description: Returns code for next token.

Constructor Detail

CLexGen

CLexGen(java.lang.String filename)
  throws java.io.FileNotFoundException,
         java.io.IOException

Function: CLexGen

Throws:

java.io.FileNotFoundException

java.io.IOException

Method Detail

generate

void generate()
        throws java.io.IOException,
               java.io.FileNotFoundException

Function: generate Description:

Throws:

java.io.IOException

java.io.FileNotFoundException

userCode

private void userCode()
               throws java.io.IOException

Function: userCode Description: Process first section of specification, echoing it into output file.

Throws:

java.io.IOException

getName

private char[] getName()

Function: getName

packCode

private char[] packCode(char[] start_dir,
                        char[] end_dir,
                        char[] prev_code,
                        int prev_read,
                        int specified)
                 throws java.io.IOException

Function: packCode Description:

Throws:

java.io.IOException

userDeclare

private void userDeclare()
                  throws java.io.IOException

Function: userDeclare Description:

Throws:

java.io.IOException

userRules

private void userRules()
                throws java.io.IOException

Function: userRules Description: Processes third section of JLex specification and creates minimized transition table.

Throws:

java.io.IOException

printccl

private void printccl(CSet set)

Function: printccl Description: Debugging routine that outputs readable form of character class.

plab

private java.lang.String plab(CNfa state)

Function: plab Description:

interp_int

private java.lang.String interp_int(int i)

Function: interp_int Description:

print_nfa

void print_nfa()

Function: print_nfa Description:

getStates

JavaLexBitSet getStates()
                  throws java.io.IOException

Throws:

java.io.IOException

expandMacro

private boolean expandMacro()

Function: expandMacro Description: Returns false on error, true otherwise.

saveMacro

private void saveMacro()

Function: saveMacro Description: Saves macro definition of form: macro_name = macro_definition

saveStates

private void saveStates()

Function: saveStates Description: Takes state declaration and makes entries for them in state hashtable in CSpec structure. State declaration should be of the form: %state name0[, name1, name2 ...] (But commas are actually optional as long as there is white space in between them.)

expandEscape

private char expandEscape()

Function: expandEscape Description: Takes escape sequence and returns corresponding character code.

packAccept

CAccept packAccept()
             throws java.io.IOException

Function: packAccept Description: Packages and returns CAccept for action next in input stream.

Throws:

java.io.IOException

advance

int advance()
      throws java.io.IOException

Throws:

java.io.IOException

details

private void details()

Function: details Description: High level debugging routine.

print_set

void print_set(java.util.Vector nfa_set)

function: print_set

print_header

private void print_header()

Function: print_header