Class StringInterpolationAsmGenerator

java.lang.Object

org.ek9lang.compiler.backend.jvm.AbstractAsmGenerator

org.ek9lang.compiler.backend.jvm.StringInterpolationAsmGenerator

All Implemented Interfaces:

Consumer<StringInterpolationInstr>

final class StringInterpolationAsmGenerator
extends AbstractAsmGenerator
implements Consumer<StringInterpolationInstr>

Generates JVM bytecode for STRING_INTERPOLATION IR instructions.

Each part is materialised as an org.ek9.lang.String (literals via String._of(java.lang.String); variable parts are already EK9 Strings produced by the instruction's setup $ conversions) and the parts are folded left with the EK9 + operator String._add(String).

Using String._add (rather than StringConcatFactory/toString()) is deliberate: EK9 is tri-state, and +/$ propagate unset. An interpolation is sugar for "lit" + $x + "lit", so any UNSET part must yield an UNSET String — the same behaviour as the native backend and the +/$ operators. StringConcatFactory would coalesce an unset part to "" (via toString()), silently breaking tri-state.

Field Summary

Fields inherited from class AbstractAsmGenerator

classWriter, constructTargetTuple

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
void	accept(StringInterpolationInstr instr)	Generate JVM bytecode for a string interpolation instruction.

Methods inherited from class AbstractAsmGenerator

convertToJvmDescriptor, convertToJvmName, extractFieldName, generateBooleanLiteral, generateCharacterLiteral, generateDebugInfo, generateFloatLiteral, generateIntegerLiteral, generateLoadVariable, generateLocalVariableTable, generateMethodDescriptor, generateObjectLiteral, generateStackOperation, generateStoreVariable, generateStoreVariableAsInt, generateStringLiteral, getCurrentMethodVisitor, getFieldDescriptor, getMethodContext, getOrCreateLabel, getOwnerClassName, getVariableIndex, isFieldAccess, isVariableAllocated, isVariableFieldAccess, setCurrentMethodVisitor, setSharedMethodContext, toJvmFieldName, trackTempVariableFromLiteral, trackTempVariableFromLoad

Methods inherited from class Object

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

Methods inherited from interface Consumer

andThen

Constructor Details

StringInterpolationAsmGenerator

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

Method Details

accept

public void accept(StringInterpolationInstr instr)

Generate JVM bytecode for a string interpolation instruction.

Specified by:

accept in interface Consumer<StringInterpolationInstr>