Class ControlFlowChainAsmGenerator

java.lang.Object

org.ek9lang.compiler.backend.jvm.AbstractAsmGenerator

org.ek9lang.compiler.backend.jvm.ControlFlowChainAsmGenerator

final class ControlFlowChainAsmGenerator
extends AbstractAsmGenerator

Main dispatcher for CONTROL_FLOW_CHAIN bytecode generation. Delegates to specialized generators based on chain_type. Follows strategy pattern with lazy instantiation.

Supported Control Flow Types:

• QUESTION_OPERATOR - EK9 question operator (?) for null/set checking
• GUARDED_ASSIGNMENT - EK9 guarded assignment (:=?) for conditional initialization
• TODO: IF_ELSE, SWITCH, WHILE, FOR, TRY_CATCH

Architecture Benefits:

• Single responsibility: Each control flow type has dedicated generator
• Lazy initialization: Generators created only when needed
• Shared logic: Common patterns in AbstractControlFlowAsmGenerator
• Extensibility: Easy to add new control flow types

Nested Class Summary

Nested classes/interfaces inherited from class AbstractAsmGenerator

AbstractAsmGenerator.LocalVariableInfo, AbstractAsmGenerator.MethodContext, AbstractAsmGenerator.ScopeInfo, AbstractAsmGenerator.TempVariableSource

Field Summary

Fields inherited from class AbstractAsmGenerator

classWriter, constructTargetTuple

Constructor Summary

Constructors

Constructor	Description
ControlFlowChainAsmGenerator(ConstructTargetTuple constructTargetTuple, OutputVisitor outputVisitor, org.objectweb.asm.ClassWriter classWriter)

Method Summary

Modifier and Type	Method	Description
void	generate(ControlFlowChainInstr instr)	Dispatch to appropriate generator based on chain type.
void	setCurrentMethodVisitor(org.objectweb.asm.MethodVisitor mv)	Update method visitor for all generators.
void	setSharedMethodContext(AbstractAsmGenerator.MethodContext context)	Update method context for all generators.

Methods inherited from class AbstractAsmGenerator

convertBooleanToInt, convertToJvmDescriptor, convertToJvmName, generateBooleanLiteral, generateCharacterLiteral, generateDebugInfo, generateFloatLiteral, generateIntegerLiteral, generateLoadVariable, generateLocalVariableTable, generateMethodDescriptor, generateObjectLiteral, generateStackOperation, generateStoreVariable, generateStringLiteral, getCurrentMethodVisitor, getMethodContext, getOrCreateLabel, getVariableIndex, isVariableAllocated, trackTempVariableFromLiteral, trackTempVariableFromLoad

Methods inherited from class Object

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

Constructor Details

ControlFlowChainAsmGenerator

ControlFlowChainAsmGenerator(ConstructTargetTuple constructTargetTuple,
 OutputVisitor outputVisitor,
 org.objectweb.asm.ClassWriter classWriter)

Method Details

generate

public void generate(ControlFlowChainInstr instr)

Dispatch to appropriate generator based on chain type. This is the main entry point called by OutputVisitor.

Parameters:

instr - CONTROL_FLOW_CHAIN instruction to generate bytecode for

Throws:

CompilerException - if chain type is not supported

setSharedMethodContext

public void setSharedMethodContext(AbstractAsmGenerator.MethodContext context)

Update method context for all generators. Called when OutputVisitor.setMethodContext() is invoked. Propagates context to already-instantiated generators.

Overrides:

setSharedMethodContext in class AbstractAsmGenerator

Parameters:

context - Shared method context with variable/label maps

setCurrentMethodVisitor

public void setCurrentMethodVisitor(org.objectweb.asm.MethodVisitor mv)

Update method visitor for all generators. Called when OutputVisitor.setMethodContext() is invoked. Propagates method visitor to already-instantiated generators.

Overrides:

setCurrentMethodVisitor in class AbstractAsmGenerator

Parameters:

mv - ASM MethodVisitor for current method being generated