Package io.quarkus.gizmo

Class AbstractSwitch<T>

java.lang.Object

io.quarkus.gizmo.BytecodeCreatorImpl

io.quarkus.gizmo.AbstractSwitch<T>

All Implemented Interfaces:

BytecodeCreator, Switch<T>, AutoCloseable

Direct Known Subclasses:

EnumSwitchImpl, StringSwitchImpl

abstract class AbstractSwitch<T>
extends BytecodeCreatorImpl
implements Switch<T>

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

Nested classes/interfaces inherited from interface io.quarkus.gizmo.Switch

Switch.EnumSwitch<E extends Enum<E>>, Switch.StringSwitch

Field Summary

Fields

Modifier and Type	Field	Description
protected final BytecodeCreatorImpl	defaultBlock
protected boolean	fallThrough

Fields inherited from class io.quarkus.gizmo.BytecodeCreatorImpl

MAX_STRING_LENGTH, operations

Constructor Summary

Constructors

Constructor	Description
AbstractSwitch(BytecodeCreatorImpl enclosing)

Method Summary

Modifier and Type	Method	Description
void	defaultCase(Consumer<BytecodeCreator> defatultBlockConsumer)	Adds the default block.
void	doBreak(BytecodeCreator creator)	Writes bytecode into the provided BytecodeCreator to make it exit the switch, effectively issuing a Java 'break' statement.
void	fallThrough()	Enables fall through.

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

Methods inherited from interface io.quarkus.gizmo.Switch

caseOf, caseOf

Field Details

fallThrough

protected boolean fallThrough

defaultBlock

protected final BytecodeCreatorImpl defaultBlock

Constructor Details

AbstractSwitch

AbstractSwitch(BytecodeCreatorImpl enclosing)

Method Details

fallThrough

public void fallThrough()

Description copied from interface: Switch

Enables fall through.

By default, the fall through is disabled. A case block is treated as a switch rule block; i.e. it's not necessary to add the break statement to prevent the fall through. However, if fall through is enabled then a case block is treated as a labeled statement group; i.e. it's necessary to add the break statement to prevent the fall through.

For example, if fall through is disabled then:

 
 StringSwitch s = method.stringSwitch(val);
       s.caseOf(List.of("boom", "foo"), bc -> {...});
 
 

is an equivalent of:

 switch (val) {
     case "boom", "foo" -> // statements provided by the consumer
 }
 

However, if fall though is enabled then:

 
 StringSwitch s = method.stringSwitch(val);
 s.fallThrough();
 s.caseOf(List.of("boom", "foo"), bc -> {...});
 
 

is an equivalent of:

 switch (val) {
     case "val1":
     case "val2":
         // statements provided by the consumer
 }
 

Specified by:

fallThrough in interface Switch<T>

defaultCase

public void defaultCase(Consumer<BytecodeCreator> defatultBlockConsumer)

Description copied from interface: Switch

Adds the default block.

Specified by:

defaultCase in interface Switch<T>

Parameters:

defatultBlockConsumer -

doBreak

public void doBreak(BytecodeCreator creator)

Description copied from interface: Switch

Writes bytecode into the provided BytecodeCreator to make it exit the switch, effectively issuing a Java 'break' statement.

Specified by:

doBreak in interface Switch<T>

Parameters:

creator -

See Also:

• Switch.fallThrough()