fmrisc.Syntax
Class Number

java.lang.Object
  fmrisc.Syntax.ASTBase
      fmrisc.Syntax.Number

All Implemented Interfaces:

AST, Expression

public final class Number
extends ASTBase
implements Expression

Handling of numbers.

Constructor Summary

Number(java.lang.String digits)
construct number from digit representation

Method Summary

AST	accept(ASTVisitor visitor) Accept visitor for a visit.
java.lang.String	getDigits() get digit representation of number
int	getPriority() get binding level for printing (lower numbers mean greater binding power)
Expression	instantiate() return copy of AST with value references instantiated by the substitutions set in the corresponding declaration identifiers
void	print(java.io.PrintWriter out) Prints text representation of tree on out (without new line termination).
void	printCore(java.io.PrintWriter out) Prints text representation of tree on out (without new line termination).
void	printPriority(int treshold, java.io.PrintWriter out) print expression, use parentheses if priority is greater than treshold

Methods inherited from class fmrisc.Syntax.ASTBase

printParens, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface fmrisc.Syntax.AST

printParens, toString

Constructor Detail

Number

public Number(java.lang.String digits)

construct number from digit representation

Parameters:

digits - the digit representation

Method Detail

getDigits

public java.lang.String getDigits()

get digit representation of number

Returns:

the digit representation

getPriority

public int getPriority()

get binding level for printing (lower numbers mean greater binding power)

Specified by:

getPriority in interface Expression

Returns:

the priority level

printCore

public void printCore(java.io.PrintWriter out)

Prints text representation of tree on out (without new line termination).

Specified by:

printCore in interface AST

Specified by:

printCore in class ASTBase

Parameters:

out - the stream on which the text is written

print

public void print(java.io.PrintWriter out)

Prints text representation of tree on out (without new line termination). Overrides ASTBase.print such that parentheses are never printed around the number.

Specified by:

print in interface AST

Overrides:

print in class ASTBase

Parameters:

out - the stream on which the text is written

printPriority

public void printPriority(int treshold,
                          java.io.PrintWriter out)

print expression, use parentheses if priority is greater than treshold

Specified by:

printPriority in interface Expression

Parameters:

treshold - priority level of enclosing expression

out - writer to print expression on

instantiate

public Expression instantiate()

return copy of AST with value references instantiated by the substitutions set in the corresponding declaration identifiers

Specified by:

instantiate in interface Expression

Returns:

the instantiated copy

accept

public AST accept(ASTVisitor visitor)

Accept visitor for a visit.

Specified by:

accept in interface AST

Parameters:

visitor - the visitor who is accepted by this node.

Returns:

the result of the visit (may be not null)