Class EmitterFactory

java.lang.Object

org.glassfish.pfl.dynamic.codegen.impl.EmitterFactory

public final class EmitterFactory
extends Object

This class provides methods that allow the construction of an object that can later be used to emit a bytecode. This is useful when multiple visitors are needed for first preparing an AST, then generating the bytecode.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EmitterFactory.CompoundEmitter
static interface	EmitterFactory.Emitter	Simple wrapper class around a UnaryVoidFunction.
private static class	EmitterFactory.FieldInsnEmitter
private static class	EmitterFactory.IntOperandEmitter
static class	EmitterFactory.NullEmitter
static class	EmitterFactory.SimpleEmitter

Field Summary

Fields

Modifier and Type	Field	Description
private static final EmitterFactory.Emitter	arrayLength
private static final EmitterFactory.Emitter	arrayLoad
private static final EmitterFactory.Emitter	arrayStore
private static final int	MAX_OPCODE
private static String[]	opcodeNames
private static BitSet	specialOpcodeSet
private static BitSet	validOpcodeSet
private static BitSet	visitFieldInsnSet
private static BitSet	visitInsnSet
private static BitSet	visitIntInsnSet
private static BitSet	visitJumpInsnSet
private static BitSet	visitMethodInsnSet
private static BitSet	visitTypeInsnSet
private static BitSet	visitVarInsnSet

Constructor Summary

Constructors

Modifier	Constructor	Description
private	EmitterFactory()

Method Summary

Modifier and Type	Method	Description
private static void	check(BitSet validOps, int op)
private static int	getVarInsnOpcode(Type type, boolean isStore)
private static BitSet	makeBitSet(int... args)
static EmitterFactory.Emitter	makeEmitter(ExpressionFactory.ArrayIndexExpression expr, boolean isStore)	Create an emitter that generates the instruction needed to either store the TOS value into an array (aastore) (isStore==true) or push the array element's value onto the stack (aaload) (isStore==false).
static EmitterFactory.Emitter	makeEmitter(ExpressionFactory.ArrayLengthExpression expr)
static EmitterFactory.Emitter	makeEmitter(ExpressionFactory.NonStaticFieldAccessExpression expr, boolean isStore)	Create an emitter that generates the instruction needed to either store the TOS value into the non-static field (isStore==true) or push the non-static fields's value onto the stack (isStore==false).
static EmitterFactory.Emitter	makeEmitter(ExpressionFactory.StaticFieldAccessExpression expr, boolean isStore)	Create an emitter that generates the instruction needed to either store the TOS value into the static field (isStore==true) or push the static fields's value onto the stack (isStore==false).
static EmitterFactory.Emitter	makeEmitter(Variable var, boolean isStore)	Create an emitter that generates the instruction needed to either store the TOS value into the variable (isStore==true) or push the variable's value onto the stack (isStore==false).
private static EmitterFactory.Emitter	makeFieldInsnEmitter(boolean isStore, boolean isStatic, Type targetType, String name, Type varType)

Methods inherited from class Object

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

Field Details

MAX_OPCODE

private static final int MAX_OPCODE

See Also:

• Constant Field Values

opcodeNames

private static String[] opcodeNames

visitInsnSet

private static BitSet visitInsnSet

visitIntInsnSet

private static BitSet visitIntInsnSet

visitVarInsnSet

private static BitSet visitVarInsnSet

visitFieldInsnSet

private static BitSet visitFieldInsnSet

visitMethodInsnSet

private static BitSet visitMethodInsnSet

visitTypeInsnSet

private static BitSet visitTypeInsnSet

visitJumpInsnSet

private static BitSet visitJumpInsnSet

specialOpcodeSet

private static BitSet specialOpcodeSet

validOpcodeSet

private static BitSet validOpcodeSet

arrayStore

private static final EmitterFactory.Emitter arrayStore

arrayLoad

private static final EmitterFactory.Emitter arrayLoad

arrayLength

private static final EmitterFactory.Emitter arrayLength

Constructor Details

EmitterFactory

private EmitterFactory()

Method Details

makeBitSet

private static BitSet makeBitSet(int... args)

check

private static void check(BitSet validOps,
 int op)

getVarInsnOpcode

private static int getVarInsnOpcode(Type type,
 boolean isStore)

makeFieldInsnEmitter

private static EmitterFactory.Emitter makeFieldInsnEmitter(boolean isStore,
 boolean isStatic,
 Type targetType,
 String name,
 Type varType)

makeEmitter

public static EmitterFactory.Emitter makeEmitter(Variable var,
 boolean isStore)

Create an emitter that generates the instruction needed to either store the TOS value into the variable (isStore==true) or push the variable's value onto the stack (isStore==false). The stack index must be set on var in the stackFrameSlot attribute.

makeEmitter

public static EmitterFactory.Emitter makeEmitter(ExpressionFactory.NonStaticFieldAccessExpression expr,
 boolean isStore)

Create an emitter that generates the instruction needed to either store the TOS value into the non-static field (isStore==true) or push the non-static fields's value onto the stack (isStore==false).

makeEmitter

public static EmitterFactory.Emitter makeEmitter(ExpressionFactory.StaticFieldAccessExpression expr,
 boolean isStore)

Create an emitter that generates the instruction needed to either store the TOS value into the static field (isStore==true) or push the static fields's value onto the stack (isStore==false).

makeEmitter

public static EmitterFactory.Emitter makeEmitter(ExpressionFactory.ArrayIndexExpression expr,
 boolean isStore)

Create an emitter that generates the instruction needed to either store the TOS value into an array (aastore) (isStore==true) or push the array element's value onto the stack (aaload) (isStore==false). This emitter assumes that arrayref and index are already on the stack, and value is on the stack either before (aastore) or after (aaload) the instruction executes.

makeEmitter

public static EmitterFactory.Emitter makeEmitter(ExpressionFactory.ArrayLengthExpression expr)