org.mvel2.asm.commons
Class JSRInlinerAdapter

java.lang.Object
  org.mvel2.asm.MethodVisitor
      org.mvel2.asm.tree.MethodNode
          org.mvel2.asm.commons.JSRInlinerAdapter

All Implemented Interfaces:

Opcodes

public class JSRInlinerAdapter
extends MethodNode
implements Opcodes

A MethodVisitor that removes JSR instructions and inlines the referenced subroutines. Explanation of how it works TODO

Author:

Niko Matsakis

Field Summary

Fields inherited from class org.mvel2.asm.tree.MethodNode

access, annotationDefault, attrs, desc, exceptions, instructions, invisibleAnnotations, invisibleLocalVariableAnnotations, invisibleParameterAnnotations, invisibleTypeAnnotations, localVariables, maxLocals, maxStack, name, parameters, signature, tryCatchBlocks, visibleAnnotations, visibleLocalVariableAnnotations, visibleParameterAnnotations, visibleTypeAnnotations

Fields inherited from class org.mvel2.asm.MethodVisitor

api, mv

Fields inherited from interface org.mvel2.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASM5, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8

Constructor Summary

protected	JSRInlinerAdapter(int api, MethodVisitor mv, int access, String name, String desc, String signature, String[] exceptions) Creates a new JSRInliner.
	JSRInlinerAdapter(MethodVisitor mv, int access, String name, String desc, String signature, String[] exceptions) Creates a new JSRInliner.

Method Summary

void	visitEnd() If any JSRs were seen, triggers the inlining process.
void	visitJumpInsn(int opcode, Label lbl) Detects a JSR instruction and sets a flag to indicate we will need to do inlining.

Methods inherited from class org.mvel2.asm.tree.MethodNode

accept, accept, check, getLabelNode, visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitFieldInsn, visitFrame, visitIincInsn, visitInsn, visitInsnAnnotation, visitIntInsn, visitInvokeDynamicInsn, visitLabel, visitLdcInsn, visitLineNumber, visitLocalVariable, visitLocalVariableAnnotation, visitLookupSwitchInsn, visitMaxs, visitMethodInsn, visitMethodInsn, visitMultiANewArrayInsn, visitParameter, visitParameterAnnotation, visitTableSwitchInsn, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation, visitTypeInsn, visitVarInsn

Methods inherited from class java.lang.Object

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

Constructor Detail

JSRInlinerAdapter

public JSRInlinerAdapter(MethodVisitor mv,
                         int access,
                         String name,
                         String desc,
                         String signature,
                         String[] exceptions)

Creates a new JSRInliner. Subclasses must not use this constructor. Instead, they must use the JSRInlinerAdapter(int, MethodVisitor, int, String, String, String, String[]) version.

Parameters:

mv - the MethodVisitor to send the resulting inlined method code to (use null for none).

access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.

name - the method's name.

desc - the method's descriptor (see Type).

signature - the method's signature. May be null.

exceptions - the internal names of the method's exception classes (see getInternalName). May be null.

Throws:

IllegalStateException - If a subclass calls this constructor.

JSRInlinerAdapter

protected JSRInlinerAdapter(int api,
                            MethodVisitor mv,
                            int access,
                            String name,
                            String desc,
                            String signature,
                            String[] exceptions)

Creates a new JSRInliner.

Parameters:

api - the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4 or Opcodes.ASM5.

mv - the MethodVisitor to send the resulting inlined method code to (use null for none).

access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.

name - the method's name.

desc - the method's descriptor (see Type).

signature - the method's signature. May be null.

exceptions - the internal names of the method's exception classes (see getInternalName). May be null.

Method Detail

visitJumpInsn

public void visitJumpInsn(int opcode,
                          Label lbl)

Detects a JSR instruction and sets a flag to indicate we will need to do inlining.

Overrides:

visitJumpInsn in class MethodNode

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.

lbl - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.

visitEnd

public void visitEnd()

If any JSRs were seen, triggers the inlining process. Otherwise, forwards the byte codes untouched.

Overrides:

visitEnd in class MethodNode