org.millscript.millscript.expr
Class AndAbsentExpr

java.lang.Object
  org.millscript.millscript.expr.Expr<AndAbsentAction>
      org.millscript.millscript.expr.AndAbsentExpr

All Implemented Interfaces:

OneResult

public final class AndAbsentExpr
extends Expr<AndAbsentAction>
implements OneResult

This class implements an && expression. This expression always returns one result.

See Also:

AndAbsentSyntax, AndAbsentAction

Constructor Summary

AndAbsentExpr(Expr<?> l, Expr<?> r)
Creates a new AndAbsent expression with the specifed left and right hand side expressions.

Method Summary

AndAbsentAction	compileIt() Compiles this expression into an action.
void	resolve(CompilerState state) Resolves any NameExpr in the tree so that they refer to the correct ident.

Methods inherited from class org.millscript.millscript.expr.Expr

arity, compile, isIntegerExpr, resolveList, setLineNumber, setOrigin, show, show

Methods inherited from class java.lang.Object

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

Constructor Detail

AndAbsentExpr

public AndAbsentExpr(Expr<?> l,
                     Expr<?> r)

Creates a new AndAbsent expression with the specifed left and right hand side expressions.

Parameters:

l - the left hand side expression, which must return a single result

r - the right hand side expression, which must return a single result

Method Detail

compileIt

public AndAbsentAction compileIt()

Description copied from class: Expr

Compiles this expression into an action.

Specified by:

compileIt in class Expr<AndAbsentAction>

Returns:

the Action for this expression

See Also:

Expr.compileIt()

resolve

public void resolve(CompilerState state)

Description copied from class: Expr

Resolves any NameExpr in the tree so that they refer to the correct ident. e.g. This method is responsible for ensuring that references to a function argument in the body of a function actually refer to the correct value.

Specified by:

resolve in class Expr<AndAbsentAction>

Parameters:

state - the compiler state we are resolving in

See Also:

Expr.resolve(org.millscript.millscript.vm.CompilerState)