org.millscript.millscript.syntax
Class AndAbsentSyntax

java.lang.Object
  org.millscript.millscript.syntax.Syntax
      org.millscript.millscript.syntax.PostfixSyntax
          org.millscript.millscript.syntax.SimplePostfixSyntax
              org.millscript.millscript.syntax.AndAbsentSyntax

All Implemented Interfaces:

PostfixSyntaxInterface

public final class AndAbsentSyntax
extends SimplePostfixSyntax

This class implements && syntax.

<expr> && <expr>

The expression on the right hand side will only be executed if the left hand side returns not null, e.g. it is equivalent to writing: if x /== absent then y else absent endif

See Also:

AndAbsentExpr

Constructor Summary

AndAbsentSyntax()

Method Summary

AndAbsentExpr

simple(Expr lhs, Expr rhs) Returns an AndAbsentExpr for the parsed syntax.

Methods inherited from class org.millscript.millscript.syntax.SimplePostfixSyntax

postfix

Methods inherited from class org.millscript.millscript.syntax.PostfixSyntax

getPrecedence, setPrec

Methods inherited from class java.lang.Object

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

Constructor Detail

AndAbsentSyntax

public AndAbsentSyntax()

Method Detail

simple

public AndAbsentExpr simple(Expr lhs,
                            Expr rhs)

Returns an AndAbsentExpr for the parsed syntax. The left and right hand side expressions are parsed generically in SimplePostfixSyntax

Parameters:

lhs - expression returning any value

rhs - expression to be executed if the lhs is not null

Returns:

an AndAbsentExpr for parsed expression