org.millscript.millscript.expr
Class CaseExpr

java.lang.Object
  org.millscript.millscript.expr.Expr<Action>
      org.millscript.millscript.expr.CaseExpr

public final class CaseExpr
extends Expr<Action>

This class implements a case expression. An individual case expression can match multiple patterns.

See Also:

SwitchSyntax, SwitchAction

Constructor Summary

CaseExpr(org.millscript.commons.util.IList<Expr> a, Expr<?> b)
Creates a new case expression from the specified patterns and body expression.

Method Summary

Action	compileIt() Compiles this expression into an action.
Expr<?>	getAct() Returns this case expressions body expression.
org.millscript.commons.util.IList<Expr<?>>	getPatterns() Returns this case expressions patterns.
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

CaseExpr

public CaseExpr(org.millscript.commons.util.IList<Expr> a,
                Expr<?> b)

Creates a new case expression from the specified patterns and body expression.

Parameters:

a - a list of pattern expressions

b - the body expression

Method Detail

compileIt

public Action compileIt()

Description copied from class: Expr

Compiles this expression into an action.

Specified by:

compileIt in class Expr<Action>

Returns:

the Action for this expression

See Also:

Expr.compileIt()

getAct

public Expr<?> getAct()

Returns this case expressions body expression.

Returns:

this expressions body expression

getPatterns

public org.millscript.commons.util.IList<Expr<?>> getPatterns()

Returns this case expressions patterns.

Returns:

an immutable list containing this expressions pattern expressions

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<Action>

Parameters:

state - the compiler state we are resolving in

See Also:

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