OpenJDK 27 · com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator

Modifier and Type	Class and Description
private class	MethodGenerator.Chunk Used to keep track of an outlineable chunk of instructions in the current method.
protected class	MethodGenerator.LocalVariableRegistry Keeps track of all local variables used in the method.

Field Summary

Modifier and Type	Field and Description
private boolean	_allocatorInit
private final Instruction	_aloadDom
private final Instruction	_aloadHandler
private final Instruction	_aloadIterator
private final Instruction	_astoreDom
private final Instruction	_astoreHandler
private final Instruction	_astoreIterator
private final Instruction	_attribute
private final Instruction	_endDocument
private final Instruction	_endElement
private Instruction	_iloadCurrent
private Instruction	_istoreCurrent
private MethodGenerator.LocalVariableRegistry	_localVariableRegistry
private final Instruction	_namespace
private final Instruction	_nextNode
private Map<Pattern, InstructionList>	_preCompiled A mapping between patterns and instruction lists used by test sequences to avoid compiling the same pattern multiple times.
private final Instruction	_reset
private final Instruction	_setStartNode
private SlotAllocator	_slotAllocator
private final Instruction	_startDocument
private final Instruction	_startElement
private final Instruction	_uniqueAttribute
private static final int	DOM_INDEX
private static final String	END_ELEMENT_SIG
private static final int	HANDLER_INDEX
protected static final int	INVALID_INDEX
private static final int	ITERATOR_INDEX
private int	m_openChunks Track the number of outlineable chunks started but not yet ended.
private int	m_totalChunks Track the number of outlineable chunks seen.
private static final int	MAX_BRANCH_TARGET_OFFSET
private static final int	MAX_METHOD_SIZE
private static final int	MIN_BRANCH_TARGET_OFFSET
private static final int	MINIMUM_OUTLINEABLE_CHUNK_SIZE
private static final String	START_ELEMENT_SIG
private static final int	TARGET_METHOD_SIZE

Access	Constructor and Description
public	MethodGenerator(int access_flags, Type return_type, Type[] arg_types, String[] arg_names, String method_name, String class_name, InstructionList il, ConstantPoolGen cpg)

Method Summary

Modifier and Type	Method and Description
public void	addInstructionList(Pattern pattern, InstructionList ilist) Add a pre-compiled pattern to this mode.
public LocalVariableGen	addLocalVariable(String name, Type type, InstructionHandle start, InstructionHandle end) Overrides com.sun.org.apache.bcel.internal.generic.MethodGen.addLocalVariable. Allocates a local variable.
public LocalVariableGen	addLocalVariable2(String name, Type type, InstructionHandle start)
public final Instruction	attribute()
public final Instruction	endDocument()
public final Instruction	endElement()
private List<MethodGenerator.Chunk>	Returns: a `java.util.List` containing the `MethodGenerator.Chunk`s that may be outlined from this method getCandidateChunks(ClassGenerator The `ClassGen` with which the generated methods will be associated classGen, int the size of the bytecode in the original method totalMethodSize) Find the outlineable chunks in this method that would be the best choices to outline, based on size and position in the method.
pack-priv Method[]	Returns: an array of all the `Method`s generated getGeneratedMethods(ClassGenerator the `ClassGenerator` of which these methods are members classGen) Get all `Method`s generated by this `MethodGenerator`.
public InstructionList	getInstructionList(Pattern pattern) Get the instruction list for a pre-compiled pattern.
public int	getLocalIndex(String name)
public LocalVariableGen	getLocalVariable(String name)
private MethodGenerator.LocalVariableRegistry	getLocalVariableRegistry()
protected Method	getThisMethod()
public Instruction	loadContextNode() by default context node is the same as current node.
public Instruction	loadCurrentNode()
public Instruction	loadDOM()
public Instruction	loadHandler()
public Instruction	loadIterator()
private static Instruction	Returns: the generated `LoadInstruction` loadLocal(int the JVM stack frame index of the variable that is to be loaded index, Type the `Type` of the variable type) Helper method to generate an instance of a subclass of `LoadInstruction` based on the specified `Type` that will load the specified local variable
public void	markChunkEnd() Mark the end of an outlineable chunk of code.
public void	markChunkStart() Mark the end of the method's `InstructionList` as the start of an outlineable chunk of code.
private List<MethodGenerator.Chunk>	Returns: a `java.util.List` of `MethodGenerator.Chunk`s maximally merged mergeAdjacentChunks(MethodGenerator.Chunk[] array of sibling `MethodGenerator.Chunk`s that are under consideration for outlining. Chunks must be in the order encountered in the `InstructionList` chunks) Merge adjacent sibling chunks to produce larger candidate chunks for outlining
public final Instruction	namespace()
public final Instruction	nextNode()
pack-priv boolean	Returns: `true` if and only if the specified variable is in use at the particular byte code offset. offsetInLocalVariableGenRange(LocalVariableGen the `LocalVariableGen` for the variable lvg, int the position in the byte code offset) Determines whether a particular variable is in use at a particular offset in the byte code for this method.
private Method	Returns: The new `Method` containing the outlined code. outline(InstructionHandle The `InstructionHandle` of the first instruction in the chunk to outline first, InstructionHandle The `InstructionHandle` of the last instruction in the chunk to outline last, String The name of the new method outlinedMethodName, ClassGenerator The `ClassGenerator` of which the original and new methods will be members classGen) Given an outlineable chunk of code in the current `MethodGenerator` move ("outline") the chunk to a new method, and replace the chunk in the old method with a reference to that new method.
public Method[]	Returns: an array of the outlined `Method`s and the original method itself outlineChunks(ClassGenerator The `ClassGen` with which the generated methods will be associated classGen, int The number of bytes of bytecode represented by the `InstructionList` of this method originalMethodSize) Breaks up the IL for this `MethodGenerator` into separate outlined methods so that no method exceeds the 64KB limit on the length of the byte code associated with a method.
public void	removeLocalVariable(LocalVariableGen lvg) Overrides com.sun.org.apache.bcel.internal.generic.MethodGen.removeLocalVariable. Remove a local variable, its slot will not be reused, if you do not use addLocalVariable with an explicit index argument.
public final Instruction	reset()
public void	setMaxLocals() Overrides com.sun.org.apache.bcel.internal.generic.MethodGen.setMaxLocals. Compute maximum number of local variables.
public final Instruction	setStartNode()
public final Instruction	startDocument()
public final Instruction	startElement()
public Instruction	storeContextNode()
public Instruction	storeCurrentNode()
public Instruction	storeDOM()
public Instruction	storeHandler()
public Instruction	storeIterator()
private static Instruction	Returns: the generated `StoredInstruction` storeLocal(int the JVM stack frame index of the variable that is to be stored index, Type the `Type` of the variable type) Helper method to generate an instance of a subclass of `StoreInstruction` based on the specified `Type` that will store a value in the specified local variable
public final Instruction	uniqueAttribute()
pack-priv boolean	Returns: `true` if the `InstructionList` was modified; `false` otherwise widenConditionalBranchTargetOffsets() Rewrites branches to avoid the JVM limits of relative branch offsets.

Inherited from com.sun.org.apache.bcel.internal.generic.MethodGen:: addAnnotationsAsAttribute addCodeAttribute addException addExceptionHandler addLineNumber addLocalVariable addLocalVariable addObserver addParameterAnnotation addParameterAnnotationsAsAttribute copy equals getAnnotationsOnParameter getArgumentName getArgumentNames getArgumentType getArgumentTypes getClassName getCodeAttributes getComparator getExceptionHandlers getExceptions getInstructionList getLineNumbers getLineNumberTable getLocalVariables getLocalVariableTable getLocalVariableTypeTable getMaxLocals getMaxStack getMaxStack getMethod getReturnType getSignature hashCode removeCodeAttribute removeCodeAttributes removeException removeExceptionHandler removeExceptionHandlers removeExceptions removeLineNumber removeLineNumbers removeLocalVariables removeLocalVariableTypeTable removeNOPs removeObserver removeRuntimeAttributes setArgumentName setArgumentNames setArgumentType setArgumentTypes setClassName setComparator setInstructionList setMaxLocals setMaxStack setMaxStack setReturnType stripAttributes toString update

public Class MethodGenerator

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary