condor.classad
Class CondExpr

java.lang.Object
  |
  +--condor.classad.Expr
        |
        +--condor.classad.CondExpr

public class CondExpr

extends Expr

A conditional expression. An internal (non-leaf) node of an expression tree representing the ternary operator cond ? expr1 : expr2.

Version:

1.2

Author:

Marvin Solomon

See Also:

Expr

Fields inherited from class condor.classad.Expr

ABSOLUTE_TIME, AND, ATTRIBUTE, BIT_COMPLEMENT, BITAND, BITOR, BITXOR, BOOLEAN, BRIEF, CALL, COMPACT, COND, dblevel, DIFFERENT, DIV, EQUAL, ERROR, formatFlags, formatIndent, GREATER, GREATER_EQ, INTEGER, LEFT_SHIFT, LESS, LESS_EQ, LIST, MAXPREC, MINIMAL_PARENTHESES, MINUS, MOD, MULTI_LINE_ADS, MULTI_LINE_LISTS, NO_ESCAPE_STRINGS, NOT, NOT_EQUAL, OP, opName, OR, PLUS, READABLE, REAL, RECORD, RELATIVE_TIME, RIGHT_SHIFT, SAME, SELECTION, SHOW_ERROR_DETAIL, SHOW_INSTANCES, STRING, SUBSCRIPT, TIMES, type, UMINUS, UNDEFINED, UPLUS, URIGHT_SHIFT

Constructor Summary

CondExpr(Expr ec, Expr et, Expr ef)
Construct a conditional expression from its three components.

Method Summary

protected int	prec() The precedence of the operator in this expression node.
protected Expr	reEval(Context ctx) Evalutate this expression.
String	toString() Convert this Expr to a string.

Methods inherited from class condor.classad.Expr

db, db, disableFormatFlags, enableFormatFlags, eval, getFormatFlags, isConstant, isNormalForm, mark, mark, mark, select, setFormatFlags, toString, typeName

Methods inherited from class java.lang.Object

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

Constructor Detail

CondExpr

public CondExpr(Expr ec,
                Expr et,
                Expr ef)

Construct a conditional expression from its three components.

Parameters:

ec - the condition (first component of the expression)

et - the true part (second component of the expression)

ef - the false part (third component of the expression)

Method Detail

toString

public String toString()

Convert this Expr to a string. The exact format of the result is controled by the static fields Expr.formatFlags and Expr.formatIndent. The result may be multiple lines long (it may include embedded newlines and tabs), but it never ends with a newline.

Overrides:

toString in class Expr

Returns:

a string representation of the this Context

See Also:

Expr.formatFlags, Expr.formatIndent

prec

protected int prec()

The precedence of the operator in this expression node. Used to print expressions without superfluous parentheses.

Overrides:

prec in class Expr

Returns:

the precendence of this node.

See Also:

Expr.MINIMAL_PARENTHESES

reEval

protected Expr reEval(Context ctx)

Evalutate this expression.

Overrides:

reEval in class Expr

Parameters:

ctx - an evaluation context for evaluating this expression

Returns:

a Constant, ListExpr, or RecordExpr representing the value.

See Also:

Expr.eval(condor.classad.Context)