Package com.cloudbees.groovy.cps.impl

Class SpreadBlock

java.lang.Object

com.cloudbees.groovy.cps.impl.SpreadBlock

All Implemented Interfaces:

Block, Serializable

public class SpreadBlock
extends Object
implements Block

Handles SpreadExpression similarly to the way that SpreadMapBlock handles SpreadMapExpression, but with a groovy-cps-specific SpreadBlock.SpreadList marker class.

We use a marker class because we cannot easily mimic the way that Groovy normally handles SpreadExpression. To do so, we would need modifications to CpsTransformer for list and argument list visitors akin to AsmClassGenerator.despreadList, a new implementation of Block that would fix those expressions and then call ScriptBytecodeAdapter.despreadList(java.lang.Object[], java.lang.Object[], int[]), and a variant of FunctionCallBlock that takes a single Block which is expected to evaluate to Object[] (rather than a Block[]) so that the result of despreadList can be used directly as the arguments array for the function call.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.cloudbees.groovy.cps.Block

Block.Noop

Field Summary

Fields inherited from interface com.cloudbees.groovy.cps.Block

NOOP

Constructor Summary

Constructors

Constructor	Description
SpreadBlock(SourceLocation loc, Block listExp)

Method Summary

Modifier and Type	Method	Description
static Object[]	despreadList(Object[] list)
Next	eval(Env e, Continuation k)	Executes this expression, then pass the result to the given continuation when it's available.

Methods inherited from class java.lang.Object

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

Constructor Details

SpreadBlock

public SpreadBlock(SourceLocation loc,
 Block listExp)

Method Details

eval

public Next eval(Env e,
 Continuation k)

Description copied from interface: Block

Executes this expression, then pass the result to the given continuation when it's available.

To be more precise, this method does not evaluate the expression by itself synchronously. Instead, the evaluation is done by the caller by repeatedly step executing the resulting Next object.

Specified by:

eval in interface Block

despreadList

public static Object[] despreadList(Object[] list)