org.vesalainen.grammar

Class Grammar

Object

Grammar

All Implemented Interfaces:

GrammarConstants

Direct Known Subclasses:

AnnotatedGrammar

public class Grammar
extends Object
implements GrammarConstants

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Grammar.NT
class	Grammar.R
class	Grammar.S
class	Grammar.T

Field Summary

Fields inherited from interface GrammarConstants

CIRCLED_ASTERISK, CIRCLED_PLUS, INVERTED_QUESTION_MARK, PHI, SIGMA

Constructor Summary

Constructors

Constructor and Description
Grammar(GrammarDef gd)
Grammar(int lrkLevel, int maxStack)
Grammar(String start, Grammar sg, String eof, String... whiteSpace)

Method Summary

Methods

Modifier and Type	Method and Description
void	addAnonymousTerminal(String expression, Regex.Option... options) Adds anonymous terminal.
void	addRule(Member reducer, String nonterminal, String... rhs) Adds new rule if the same rule doesn't exist already.
void	addRule(Member reducer, String nonterminal, String document, boolean synthetic, List<String> rhs) Adds new rule if the same rule doesn't exist already.
void	addRule(String nonterminal, List<String> rhs) Adds new rule if the same rule doesn't exist already.
void	addRule(String nonterminal, String... rhs) Adds new rule if the same rule doesn't exist already.
void	addTerminal(Member reducer, String name, String expression, String documentation, int priority, int base, Regex.Option... options)
void	addTerminal(String name, String expression, int priority, int base, Regex.Option... options)
int	getLrkLevel()
int	getMaxStack()
int	getNumber(String symbol)
LALRKParserGenerator	getParserGenerator(String start, String eof, boolean syntaxOnly, String... whiteSpace) Return a parser generator from grammar.
Map<Integer,String>	getRuleDescriptions()
String	getSymbol(int number)
Collection<String>	getSymbols()
boolean	hasNonterminal(String name)
boolean	hasTerminal(String name)
static boolean	isAnonymousTerminal(String name)
static String	literal(String text)
void	print(Appendable out)
static String	quantifierRules(String nt, char quantifier, Grammar g)
void	setLrkLevel(int lrkLevel)
void	setMaxStack(int maxStack)

Methods inherited from class Object

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

Constructor Detail

Grammar

public Grammar(GrammarDef gd)

Grammar

public Grammar(int lrkLevel,
       int maxStack)

Grammar

public Grammar(String start,
       Grammar sg,
       String eof,
       String... whiteSpace)

Method Detail

hasNonterminal

public boolean hasNonterminal(String name)

hasTerminal

public boolean hasTerminal(String name)

quantifierRules

public static String quantifierRules(String nt,
                     char quantifier,
                     Grammar g)
                              throws NoSuchMethodException

Throws:

NoSuchMethodException

addRule

public void addRule(String nonterminal,
           String... rhs)

Adds new rule if the same rule doesn't exist already.

Parameters:

nonterminal - Left hand side of the rule.

rhs - Strings in BnfGrammar format.

See Also:

BnfGrammar

addRule

public void addRule(Member reducer,
           String nonterminal,
           String... rhs)

Adds new rule if the same rule doesn't exist already.

Parameters:

reducer - Reducer method.

nonterminal - Left hand side of the rule.

rhs - Strings in BnfGrammar format.

See Also:

BnfGrammar

addRule

public void addRule(String nonterminal,
           List<String> rhs)

Adds new rule if the same rule doesn't exist already.

Parameters:

nonterminal - Left hand side of the rule.

rhs -

addRule

public void addRule(Member reducer,
           String nonterminal,
           String document,
           boolean synthetic,
           List<String> rhs)

Adds new rule if the same rule doesn't exist already.

Parameters:

reducer - Reducer method.

nonterminal - Left hand side of the rule.

rhs - Strings which are either nonterminal names, terminal names or anonymous terminals. Anonymous terminals are regular expressions inside apostrophes. E.g '[0-9]+'

addAnonymousTerminal

public void addAnonymousTerminal(String expression,
                        Regex.Option... options)

Adds anonymous terminal. Anonymous terminals name is 'expression'

Parameters:

expression -

options -

addTerminal

public void addTerminal(String name,
               String expression,
               int priority,
               int base,
               Regex.Option... options)

addTerminal

public final void addTerminal(Member reducer,
               String name,
               String expression,
               String documentation,
               int priority,
               int base,
               Regex.Option... options)

getParserGenerator

public LALRKParserGenerator getParserGenerator(String start,
                                      String eof,
                                      boolean syntaxOnly,
                                      String... whiteSpace)

Return a parser generator from grammar. The same grammar can produce different parsers depending for example on start rhs.

Parameters:

start -

eof -

whiteSpace -

Returns:

print

public void print(Appendable out)

getRuleDescriptions

public Map<Integer,String> getRuleDescriptions()

isAnonymousTerminal

public static boolean isAnonymousTerminal(String name)

getSymbol

public String getSymbol(int number)

getNumber

public int getNumber(String symbol)

getSymbols

public Collection<String> getSymbols()

getLrkLevel

public int getLrkLevel()

setLrkLevel

public void setLrkLevel(int lrkLevel)

getMaxStack

public int getMaxStack()

setMaxStack

public void setMaxStack(int maxStack)

literal

public static String literal(String text)