Package com.tangosol.coherence.dsltools.precedence

Class TokenTable

java.lang.Object

com.tangosol.coherence.dsltools.precedence.TokenTable

public class TokenTable
extends Object

TokenTable is a helper class used by Scanners to convert BaseTokens to to OPTokens. TokenTables have protocol to add tokens under a name, alias tokens, and control the enabeleded state of tokens.

Author:

djl 2009.03.14

Constructor Summary

Constructors

Constructor	Description
TokenTable()	Construct a new OPToken.
TokenTable(String sIdentifierASTName, String sLiteralASTName)	Construct a new TokenTable with the given parameters to set the ast names for identifiers and literals.

Method Summary

Modifier and Type	Method	Description
OPToken	addToken(OPToken token)	Add a token t under the id stored in the token
OPToken	addToken(OPToken token, String sASTName)	Add a token t with given ast name
OPToken	addToken(String sName, OPToken token)	Add a token t under the given name
OPToken	addToken(String sName, OPToken token, String sASTName)	Add a token t under the given name with given ast name
OPToken	addToken(String sName, OPToken token, String sLedName, String sNudName)	Add a token t under the given name with given led and nud names
void	alias(String sName, String sInstalled)	Add a token alias under the given name for a token already installed
void	disable(String sName)	Disable an installed token stored under the given name
void	enable(String sName)	Enable an installed token stored under the given name
boolean	isIgnoringCase()	Answer wheather the receiver is ignoringCase
OPToken	lookup(String sName)	Lookup an OPToken by name
OPToken	newIdentifier(String sValue)	Construct a new identifier OPToken instance with the given id.
OPToken	newLiteral(String sValue, int nTypeCode)	Construct a new literal OPToken instance with the given parameters.
void	setIgnoreCase(boolean fIgnore)	Use given boolean to decide whether to ignore case for keyword operations

Methods inherited from class java.lang.Object

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

Constructor Detail

TokenTable

public TokenTable()

Construct a new OPToken.

TokenTable

public TokenTable(String sIdentifierASTName,
                  String sLiteralASTName)

Construct a new TokenTable with the given parameters to set the ast names for identifiers and literals.

Parameters:

sIdentifierASTName - identifiers ast names

sLiteralASTName - literals ast name

Method Detail

setIgnoreCase

public void setIgnoreCase(boolean fIgnore)

Use given boolean to decide whether to ignore case for keyword operations

Parameters:

fIgnore - the boolean to use to control case interest

isIgnoringCase

public boolean isIgnoringCase()

Answer wheather the receiver is ignoringCase

Returns:

the ignoreCase flag

lookup

public OPToken lookup(String sName)

Lookup an OPToken by name

Parameters:

sName - the name of the token to lookup

Returns:

the token found under name or null if absent

addToken

public OPToken addToken(String sName,
                        OPToken token)

Add a token t under the given name

Parameters:

sName - string identifier for this token

token - the token to add

Returns:

the given token

addToken

public OPToken addToken(String sName,
                        OPToken token,
                        String sASTName)

Add a token t under the given name with given ast name

Parameters:

sName - string identifier for this token

token - the token to add

sASTName - the token's led symbol

Returns:

the given token

addToken

public OPToken addToken(String sName,
                        OPToken token,
                        String sLedName,
                        String sNudName)

Add a token t under the given name with given led and nud names

Parameters:

sName - string identifier for this token

token - the token to add

sLedName - the token's led symbol

sNudName - the token's nud symbol

Returns:

the given token

addToken

public OPToken addToken(OPToken token)

Add a token t under the id stored in the token

Parameters:

token - the token to add

Returns:

the given token

addToken

public OPToken addToken(OPToken token,
                        String sASTName)

Add a token t with given ast name

Parameters:

token - the token to add

sASTName - the token to add

Returns:

the given token

alias

public void alias(String sName,
                  String sInstalled)

Add a token alias under the given name for a token already installed

Parameters:

sName - string identifier for token alias

sInstalled - the name of a token already in the table

disable

public void disable(String sName)

Disable an installed token stored under the given name

Parameters:

sName - string identifier for token to disable

enable

public void enable(String sName)

Enable an installed token stored under the given name

Parameters:

sName - string identifier for token to enable

newLiteral

public OPToken newLiteral(String sValue,
                          int nTypeCode)

Construct a new literal OPToken instance with the given parameters.

Parameters:

sValue - string representation of the literal

nTypeCode - the type code for this literal token

Returns:

the token of some appropriate class

newIdentifier

public OPToken newIdentifier(String sValue)

Construct a new identifier OPToken instance with the given id.

Parameters:

sValue - string representation of the literal

Returns:

the token of some appropriate class