org.millscript.millscript.expr
Class SkipExpr

java.lang.Object
  org.millscript.millscript.expr.Expr<SkipAction>
      org.millscript.millscript.expr.SkipExpr

All Implemented Interfaces:

ZeroResults

public final class SkipExpr
extends Expr<SkipAction>
implements ZeroResults

This class implements a skip expression. This is used where an expression is required, but one has not been specified. e.g. when applying a function with no arguments. This expression never returns any results.

See Also:

SkipAction

Constructor Summary

SkipExpr()

Method Summary

SkipAction	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

SkipExpr

public SkipExpr()

Method Detail

compileIt

public SkipAction compileIt()

Description copied from class: Expr

Compiles this expression into an action.

Specified by:

compileIt in class Expr<SkipAction>

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<SkipAction>

Parameters:

state - the compiler state we are resolving in

See Also:

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