Package io.quarkus.gizmo

Class IfThenElseImpl

java.lang.Object

io.quarkus.gizmo.BytecodeCreatorImpl

io.quarkus.gizmo.IfThenElseImpl

All Implemented Interfaces:

BytecodeCreator, IfThenElse, java.lang.AutoCloseable

class IfThenElseImpl
extends BytecodeCreatorImpl
implements IfThenElse

Nested Class Summary

Nested classes/interfaces inherited from class io.quarkus.gizmo.BytecodeCreatorImpl

BytecodeCreatorImpl.AssignOperation, BytecodeCreatorImpl.BlockOperation, BytecodeCreatorImpl.IfOperation, BytecodeCreatorImpl.InvokeOperation, BytecodeCreatorImpl.JumpOperation, BytecodeCreatorImpl.NewInstanceOperation, BytecodeCreatorImpl.Operation

Field Summary

Fields

Modifier and Type	Field	Description
private static byte	ELSE
private static byte	ELSEIF
private static byte	INIT
private BranchResult	result
private byte	state
private static byte	THEN

Fields inherited from class io.quarkus.gizmo.BytecodeCreatorImpl

MAX_STRING_LENGTH, operations

Constructor Summary

Constructors

Constructor	Description
IfThenElseImpl(BytecodeCreatorImpl enclosing, ResultHandle value)

Method Summary

Modifier and Type	Method	Description
private java.lang.IllegalStateException	elseAlreadyCreated()
BytecodeCreator	elseIf(ResultHandle value)	Creates a new else-if statement.
BytecodeCreator	elseIf(java.util.function.Function<BytecodeCreator,ResultHandle> test)	Creates a new else-if statement.
BytecodeCreator	elseThen()	This block is executed if no condition result handle was evaluated as true.
private java.lang.IllegalStateException	initialThenNotCreated()
BytecodeCreator	then()	This block is executed if the result handle that was passed to BytecodeCreator.ifThenElse(ResultHandle) is evaluated as true.

Methods inherited from class io.quarkus.gizmo.BytecodeCreatorImpl

add, allocateLocalVariables, arrayLength, assign, bitwiseAnd, bitwiseOr, bitwiseXor, breakScope, checkCast, checkScope, checkScope, compareDouble, compareFloat, compareLong, continueScope, convertPrimitive, createFunction, createNewInstanceOp, createScope, createVariable, divide, enumSwitch, findActiveResultHandles, forEach, getBottom, getMethod, getMethodParam, getOwner, getThis, getTop, ifFalse, ifGreaterEqualZero, ifGreaterThanZero, ifIntegerEqual, ifIntegerGreaterEqual, ifIntegerGreaterThan, ifIntegerLessEqual, ifIntegerLessThan, ifLessEqualZero, ifLessThanZero, ifNonZero, ifNotNull, ifNull, ifReferencesEqual, ifReferencesNotEqual, ifThenElse, ifTrue, ifZero, instanceOf, invokeInterfaceMethod, invokeSpecialInterfaceMethod, invokeSpecialMethod, invokeStaticInterfaceMethod, invokeStaticMethod, invokeVirtualMethod, isScopedWithin, jumpTo, load, load, load, load, load, load, load, load, load, loadClass, loadClassFromTCCL, loadNull, loadResultHandle, loadResultHandle, multiply, newArray, newInstance, readArrayValue, readInstanceField, readStaticField, remainder, resolve, resolve, resolve, resolve, returnValue, storeResultHandle, stringSwitch, subtract, throwException, tryBlock, whileLoop, writeArrayValue, writeInstanceField, writeInteriorOperations, writeOperations, writeStaticField

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.quarkus.gizmo.BytecodeCreator

breakScope, checkCast, close, continueScope, createVariable, increment, instanceOf, invokeInterfaceMethod, invokeSpecialInterfaceMethod, invokeSpecialMethod, invokeStaticInterfaceMethod, invokeStaticMethod, invokeVirtualMethod, load, loadClass, loadClass, loadClassFromTCCL, loadClassFromTCCL, marshalAsArray, newArray, newArray, newArray, newInstance, readArrayValue, readInstanceField, readStaticField, returnBoolean, returnInt, returnNull, returnVoid, throwException, throwException, writeArrayValue, writeInstanceField, writeStaticField

Field Detail

state

private byte state

result

private BranchResult result

INIT

private static byte INIT

THEN

private static byte THEN

ELSEIF

private static byte ELSEIF

ELSE

private static byte ELSE

Constructor Detail

IfThenElseImpl

public IfThenElseImpl(BytecodeCreatorImpl enclosing,
                      ResultHandle value)

Method Detail

then

public BytecodeCreator then()

Description copied from interface: IfThenElse

This block is executed if the result handle that was passed to BytecodeCreator.ifThenElse(ResultHandle) is evaluated as true.

Specified by:

then in interface IfThenElse

Returns:

the then block

elseIf

public BytecodeCreator elseIf(ResultHandle value)

Description copied from interface: IfThenElse

Creates a new else-if statement. The block is executed if the condition result handle is evaluated as true.

Note that the condition result handle must already exist.

 boolean test = foo.testIsOk();
 if (someOtherCondition) {
     // do action "A"
 } else if (test) {
     // do action "B"
 }
 

If you need to create the condition result handle inside the if-else statement then use the IfThenElse.elseIf(Function) method instead.

Specified by:

elseIf in interface IfThenElse

Returns:

the else-if block

elseIf

public BytecodeCreator elseIf(java.util.function.Function<BytecodeCreator,ResultHandle> test)

Description copied from interface: IfThenElse

Creates a new else-if statement. The block is executed if the condition result handle returned from the function is evaluated as true.

The argument of the function represents the block that is executed when the else-if statement is evaluated.

In order to generate the bytecode for the "action B" branch in the following example:

 if (someOtherCondition) {
     // do action "A"
 } else if (foo.testIsOk()) {
     // do action "B"
 }
 

The code needs to look like:

 IfThenElse ifAction = method.ifThenElse(someOtherCondition);
 BytecodeCreator ifTestOk = ifValue.elseIf(b -> b.invokeVirtualMethod(testIsOkMethodDescriptor, fooInstance)));
 // do action "B"
 

Specified by:

elseIf in interface IfThenElse

Returns:

the else-if block

elseThen

public BytecodeCreator elseThen()

Description copied from interface: IfThenElse

This block is executed if no condition result handle was evaluated as true.

Specified by:

elseThen in interface IfThenElse

Returns:

the else block

initialThenNotCreated

private java.lang.IllegalStateException initialThenNotCreated()

elseAlreadyCreated

private java.lang.IllegalStateException elseAlreadyCreated()