Package com.tangosol.coherence.dsltools.precedence

Class PeekOPToken

java.lang.Object

com.tangosol.coherence.dsltools.precedence.OPToken

com.tangosol.coherence.dsltools.precedence.PeekOPToken

Direct Known Subclasses:

SQLPeekOPToken

public class PeekOPToken
extends OPToken

A PeekOPToken is a token that contains other OPToken instances. It will defer calls to the nud(OPParser) and led(OPParser, Term) methods to these other tokens. The exact instance of the OPToken deferred to will be determined by looking ahead at the next token in the token stream and calling the contained OPToken with that id.

Since:

Coherence 12.2.1

Author:

jk 2014.02.12

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,OPToken>	f_mapTokens	The Map of OPToken instances that will be called depending on the value of the next token in the stream.

Fields inherited from class com.tangosol.coherence.dsltools.precedence.OPToken

BINARY_OPERATOR_NODE, BINDING_NODE, CALL_NODE, DEREF_NODE, FIELD_LIST, IDENTIFIER_NODE, LIST_NODE, LITERAL_NODE, m_nBindingPower, m_sLedASTName, m_sNudASTName, m_sValue, PRECEDENCE_ASSIGNMENT, PRECEDENCE_BITWISE, PRECEDENCE_EXPONENT, PRECEDENCE_IDENTIFIER, PRECEDENCE_KEYWORD, PRECEDENCE_LOGICAL, PRECEDENCE_LOGICAL_BITWISE, PRECEDENCE_PARENTHESES, PRECEDENCE_PRODUCT, PRECEDENCE_RELATIONAL, PRECEDENCE_SUM, PRECEDENCE_UNARY, PRECEDENCE_UNARY_POST, UNARY_OPERATOR_NODE

Constructor Summary

Constructors

Constructor	Description
PeekOPToken(String sId, int nBindingPower, OPToken... tokens)	Construct a new PeekOPToken with the given parameters.
PeekOPToken(String sId, int nBindingPower, String sASTName, OPToken... tokens)	Construct a new PeekOPToken with the given parameters.
PeekOPToken(String sId, int nBindingPower, String sLedASTName, String sNudASTName, OPToken... aTokens)	Construct a new PeekOPToken with the given parameters.
PeekOPToken(String sId, OPToken... tokens)	Construct a new PeekOPToken with the given parameters.
PeekOPToken(String sId, String sASTName, OPToken... tokens)	Construct a new PeekOPToken with the given parameters.

Method Summary

Modifier and Type	Method	Description
void	addOPToken(OPToken token)	Add the specified OPToken to the Map of tokens that will be called depending on the next token parsed from the token stream.
void	addOPToken(String id, OPToken token)	Add the specified OPToken to the Map of tokens that will be called depending on the next token parsed from the token stream.
protected Term	defaultLed(OPParser parser, Term leftNode)	The default led method that will be called if there is no OPToken mapped for the token parsed from the token stream.
protected Term	defaultNud(OPParser parser)	The default nud method that will be called if there is no OPToken mapped for the token parsed from the token stream.
protected OPToken	findMatchingOPToken(OPParser parser)	Return the OPToken mapped to the next token in the OPParser's token stream.
OPToken	getOPToken(String sId)	Obtain the OPToken that is mapped to the specified identifier.
Term	led(OPParser parser, Term leftNode)	Process this token and possibly the given leftNodein the context of a parser with the left denotation.
Term	nud(OPParser parser)	Process this token in the context of parser p with the null denotation.

Methods inherited from class com.tangosol.coherence.dsltools.precedence.OPToken

equals, getBindingPower, getId, getLedASTName, getNudASTName, getValue, hashCode, leftBindingPower, newAST, newAST, newAST, newAST, newAST, setBindingPower, setId, setLedASTName, setNudASTName, setValue, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

f_mapTokens

protected final Map<String,OPToken> f_mapTokens

The Map of OPToken instances that will be called depending on the value of the next token in the stream.

Constructor Detail

PeekOPToken

public PeekOPToken(String sId,
                   OPToken... tokens)

Construct a new PeekOPToken with the given parameters.

Parameters:

sId - string representation of the token

tokens - the tokens to defer to

PeekOPToken

public PeekOPToken(String sId,
                   int nBindingPower,
                   OPToken... tokens)

Construct a new PeekOPToken with the given parameters.

Parameters:

sId - string representation of the token

nBindingPower - the precedence binding power of this token

tokens - the tokens to defer to

PeekOPToken

public PeekOPToken(String sId,
                   String sASTName,
                   OPToken... tokens)

Construct a new PeekOPToken with the given parameters.

Parameters:

sId - string representation of the token

sASTName - the type code for this token

tokens - the tokens to defer to

PeekOPToken

public PeekOPToken(String sId,
                   int nBindingPower,
                   String sASTName,
                   OPToken... tokens)

Construct a new PeekOPToken with the given parameters.

Parameters:

sId - string representation of the token

nBindingPower - the precedence binding power of this token

sASTName - the type code for this token

tokens - the tokens to defer to

PeekOPToken

public PeekOPToken(String sId,
                   int nBindingPower,
                   String sLedASTName,
                   String sNudASTName,
                   OPToken... aTokens)

Construct a new PeekOPToken with the given parameters.

Parameters:

sId - string representation of the token

nBindingPower - the precedence binding power of this token

sLedASTName - the name for this tokens AST

sNudASTName - the name for this tokens AST

aTokens - the tokens to defer to

Method Detail

addOPToken

public void addOPToken(OPToken token)

Add the specified OPToken to the Map of tokens that will be called depending on the next token parsed from the token stream.

Parameters:

token - the OPToken to call if the next token in the stream matches the specified OPTokens identifier

addOPToken

public void addOPToken(String id,
                       OPToken token)

Add the specified OPToken to the Map of tokens that will be called depending on the next token parsed from the token stream.

Parameters:

id - the identifier to match with the next token in the stream

token - the OPToken to call if the next token in the stream matches the specified identifier

getOPToken

public OPToken getOPToken(String sId)

Obtain the OPToken that is mapped to the specified identifier.

Parameters:

sId - the identifier to obtain the mapped OPToken for

Returns:

the OPToken mapped to the specified identifier

defaultNud

protected Term defaultNud(OPParser parser)

The default nud method that will be called if there is no OPToken mapped for the token parsed from the token stream.

This method may be overridden in sub-classes that require different default processing to the default OPToken.nud(OPParser) method.

Parameters:

parser - the current token stream's parser

Returns:

the result of calling the default nud method

defaultLed

protected Term defaultLed(OPParser parser,
                          Term leftNode)

The default led method that will be called if there is no OPToken mapped for the token parsed from the token stream. This method may be overridden in sub-classes that require different default processing to the default OPToken.led(OPParser, Term) method.

Parameters:

parser - the current token stream's parser

leftNode - the left node of the current AST

Returns:

the result of calling the default led method

nud

public Term nud(OPParser parser)

Process this token in the context of parser p with the null denotation. A nud method typically will have no interest in the token to the left. The processing results in an Abstract Syntax Tree Node that captures the meaning

Overrides:

nud in class OPToken

Parameters:

parser - the parser that is the context for parsing

Returns:

an AstNode

led

public Term led(OPParser parser,
                Term leftNode)

Process this token and possibly the given leftNodein the context of a parser with the left denotation. A led method typically will be interested t in the token to the left. The processing results in an Abstract Syntax Tree Node that captures the meaning

Overrides:

led in class OPToken

Parameters:

parser - the parser that is the context for parsing

leftNode - an ast Term that the token is possibly interested in

Returns:

an AstNode

findMatchingOPToken

protected OPToken findMatchingOPToken(OPParser parser)

Return the OPToken mapped to the next token in the OPParser's token stream.

Parameters:

parser - the OPParser providing the token stream

Returns:

the OPToken matching the next token in the stream or null if there is no OPToken mapped to the next token in the stream.