com.tangosol.coherence.dsltools.precedence

Class InfixOPToken

java.lang.Object

com.tangosol.coherence.dsltools.precedence.OPToken

com.tangosol.coherence.dsltools.precedence.InfixOPToken

Direct Known Subclasses:

LikeOPToken

public class InfixOPToken
extends OPToken

InfixOPToken is used to implement infix operators. If enabled it will also do the right thing for unary operators such as + and - which are typically overloaded.

Author:

djl 2009.03.14

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	m_fPrefixAllowed Flag that control whether the operator can be used as a prefix.

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 and Description
InfixOPToken(String sId, int nBp) Construct a new InfixOPToken with the given parameters.
InfixOPToken(String sId, int nBp, String sASTName) Construct a new InfixOPToken with the given parameters.
InfixOPToken(String sId, int nBP, String sLedASTName, String sNudASTName) Construct a new InfixOPToken with the given parameters.

Method Summary

Modifier and Type	Method and Description
boolean	isPrefixAllowed() Get the flag that control whether the operator can be used as a prefix.
Term	led(OPParser p, Term leftNode) Process this token and possibly the given leftNodein the context of a parser with the left denotation.
Term	nud(OPParser p) Process this token in the context of parser p with the null denotation.
void	setPrefixAllowed(boolean fIsPrefix) Set the flag that control whether the operator may be used as a prefix.

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

m_fPrefixAllowed

protected boolean m_fPrefixAllowed

Flag that control whether the operator can be used as a prefix.

Constructor Detail

InfixOPToken

public InfixOPToken(String sId,
                    int nBp)

Construct a new InfixOPToken with the given parameters.

Parameters:

sId - string identifier for this token

nBp - the binding power for this token

InfixOPToken

public InfixOPToken(String sId,
                    int nBp,
                    String sASTName)

Construct a new InfixOPToken with the given parameters.

Parameters:

sId - string representation of the token

nBp - the binding power for this token

sASTName - the name for this tokens AST

InfixOPToken

public InfixOPToken(String sId,
                    int nBP,
                    String sLedASTName,
                    String sNudASTName)

Construct a new InfixOPToken with the given parameters.

Parameters:

sId - string representation of the token

nBP - the binding power for this token

sLedASTName - the name for this tokens AST

sNudASTName - the name for this tokens AST

Method Detail

led

public Term led(OPParser p,
                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:

p - the parser that is the context for parsing

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

Returns:

an AstNode

nud

public Term nud(OPParser p)

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:

p - the parser that is the context for parsing

Returns:

an AstNode

isPrefixAllowed

public boolean isPrefixAllowed()

Get the flag that control whether the operator can be used as a prefix.

Returns:

the string representation

setPrefixAllowed

public void setPrefixAllowed(boolean fIsPrefix)

Set the flag that control whether the operator may be used as a prefix.

Parameters:

fIsPrefix - the string representation for the token