|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object org.logicalcobwebs.asm.util.PrintCodeVisitor
public abstract class PrintCodeVisitor
An abstract code visitor that prints the code it visits. Each
visitXXX method clears the buf
buffer, calls the
corresponding printXXX method, and then adds the buffer's
content to the text
list. In order to provide a concrete
print code visitor, one must implement the printXXX methods
in a sub class of this class. Each method should print the instructions it
visits in buf
.
Field Summary | |
---|---|
protected java.lang.StringBuffer |
buf
A buffer used to convert instructions to strings. |
static java.lang.String[] |
OPCODES
The names of the Java Virtual Machine opcodes. |
protected java.util.List |
text
The text to be printed. |
Constructor Summary | |
---|---|
PrintCodeVisitor()
Constructs a new PrintCodeVisitor object. |
Method Summary | |
---|---|
java.util.List |
getText()
Returns the code printed by this code visitor. |
abstract void |
printAttribute(Attribute attr)
Prints a non standard code attribute. |
abstract void |
printFieldInsn(int opcode,
java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Prints a field instruction. |
abstract void |
printIincInsn(int var,
int increment)
Prints an IINC instruction. |
abstract void |
printInsn(int opcode)
Prints a zero operand instruction. |
abstract void |
printIntInsn(int opcode,
int operand)
Prints an instruction with a single int operand. |
abstract void |
printJumpInsn(int opcode,
Label label)
Prints a jump instruction. |
abstract void |
printLabel(Label label)
Prints a label. |
abstract void |
printLdcInsn(java.lang.Object cst)
Prints a LDC instruction. |
abstract void |
printLineNumber(int line,
Label start)
Prints a line number declaration. |
abstract void |
printLocalVariable(java.lang.String name,
java.lang.String desc,
Label start,
Label end,
int index)
Prints a local variable declaration. |
abstract void |
printLookupSwitchInsn(Label dflt,
int[] keys,
Label[] labels)
Prints a LOOKUPSWITCH instruction. |
abstract void |
printMaxs(int maxStack,
int maxLocals)
Prints the maximum stack size and the maximum number of local variables of the method. |
abstract void |
printMethodInsn(int opcode,
java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Prints a method instruction. |
abstract void |
printMultiANewArrayInsn(java.lang.String desc,
int dims)
Prints a MULTIANEWARRAY instruction. |
abstract void |
printTableSwitchInsn(int min,
int max,
Label dflt,
Label[] labels)
Prints a TABLESWITCH instruction. |
abstract void |
printTryCatchBlock(Label start,
Label end,
Label handler,
java.lang.String type)
Prints a try catch block. |
abstract void |
printTypeInsn(int opcode,
java.lang.String desc)
Prints a type instruction. |
abstract void |
printVarInsn(int opcode,
int var)
Prints a local variable instruction. |
void |
visitAttribute(Attribute attr)
Visits a non standard attribute of the code. |
void |
visitFieldInsn(int opcode,
java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Visits a field instruction. |
void |
visitIincInsn(int var,
int increment)
Visits an IINC instruction. |
void |
visitInsn(int opcode)
Visits a zero operand instruction. |
void |
visitIntInsn(int opcode,
int operand)
Visits an instruction with a single int operand. |
void |
visitJumpInsn(int opcode,
Label label)
Visits a jump instruction. |
void |
visitLabel(Label label)
Visits a label. |
void |
visitLdcInsn(java.lang.Object cst)
Visits a LDC instruction. |
void |
visitLineNumber(int line,
Label start)
Visits a line number declaration. |
void |
visitLocalVariable(java.lang.String name,
java.lang.String desc,
Label start,
Label end,
int index)
Visits a local variable declaration. |
void |
visitLookupSwitchInsn(Label dflt,
int[] keys,
Label[] labels)
Visits a LOOKUPSWITCH instruction. |
void |
visitMaxs(int maxStack,
int maxLocals)
Visits the maximum stack size and the maximum number of local variables of the method. |
void |
visitMethodInsn(int opcode,
java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Visits a method instruction. |
void |
visitMultiANewArrayInsn(java.lang.String desc,
int dims)
Visits a MULTIANEWARRAY instruction. |
void |
visitTableSwitchInsn(int min,
int max,
Label dflt,
Label[] labels)
Visits a TABLESWITCH instruction. |
void |
visitTryCatchBlock(Label start,
Label end,
Label handler,
java.lang.String type)
Visits a try catch block. |
void |
visitTypeInsn(int opcode,
java.lang.String desc)
Visits a type instruction. |
void |
visitVarInsn(int opcode,
int var)
Visits a local variable instruction. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected final java.util.List text
text
.
protected final java.lang.StringBuffer buf
public static final java.lang.String[] OPCODES
Constructor Detail |
---|
public PrintCodeVisitor()
PrintCodeVisitor
object.
Method Detail |
---|
public void visitInsn(int opcode)
CodeVisitor
visitInsn
in interface CodeVisitor
opcode
- the opcode of the instruction to be visited. This opcode is
either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2,
ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1,
FCONST_2, DCONST_0, DCONST_1,
IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD,
IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE,
SASTORE,
POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP,
IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL,
DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG,
FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR,
LOR, IXOR, LXOR,
I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C,
I2S,
LCMP, FCMPL, FCMPG, DCMPL, DCMPG,
IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN,
ARRAYLENGTH,
ATHROW,
MONITORENTER, or MONITOREXIT.public void visitIntInsn(int opcode, int operand)
CodeVisitor
visitIntInsn
in interface CodeVisitor
opcode
- the opcode of the instruction to be visited. This opcode is
either BIPUSH, SIPUSH or NEWARRAY.operand
- the operand of the instruction to be visited.public void visitVarInsn(int opcode, int var)
CodeVisitor
visitVarInsn
in interface CodeVisitor
opcode
- the opcode of the local variable instruction to be visited.
This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE,
LSTORE, FSTORE, DSTORE, ASTORE or RET.var
- the operand of the instruction to be visited. This operand is
the index of a local variable.public void visitTypeInsn(int opcode, java.lang.String desc)
CodeVisitor
visitTypeInsn
in interface CodeVisitor
opcode
- the opcode of the type instruction to be visited. This opcode
is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.desc
- the operand of the instruction to be visited. This operand is
must be a fully qualified class name in internal form, or the type
descriptor of an array type (see Type
).public void visitFieldInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc)
CodeVisitor
visitFieldInsn
in interface CodeVisitor
opcode
- the opcode of the type instruction to be visited. This opcode
is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.owner
- the internal name of the field's owner class (see getInternalName
).name
- the field's name.desc
- the field's descriptor (see Type
).public void visitMethodInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc)
CodeVisitor
visitMethodInsn
in interface CodeVisitor
opcode
- the opcode of the type instruction to be visited. This opcode
is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or
INVOKEINTERFACE.owner
- the internal name of the method's owner class (see getInternalName
).name
- the method's name.desc
- the method's descriptor (see Type
).public void visitJumpInsn(int opcode, Label label)
CodeVisitor
visitJumpInsn
in interface CodeVisitor
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.label
- the operand of the instruction to be visited. This operand is
a label that designates the instruction to which the jump instruction
may jump.public void visitLabel(Label label)
CodeVisitor
visitLabel
in interface CodeVisitor
label
- a Label
object.public void visitLdcInsn(java.lang.Object cst)
CodeVisitor
visitLdcInsn
in interface CodeVisitor
cst
- the constant to be loaded on the stack. This parameter must be
a non null Integer
, a Float
, a Long
, a Double
or a String
.public void visitIincInsn(int var, int increment)
CodeVisitor
visitIincInsn
in interface CodeVisitor
var
- index of the local variable to be incremented.increment
- amount to increment the local variable by.public void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels)
CodeVisitor
visitTableSwitchInsn
in interface CodeVisitor
min
- the minimum key value.max
- the maximum key value.dflt
- beginning of the default handler block.labels
- beginnings of the handler blocks. labels[i] is the
beginning of the handler block for the min + i key.public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
CodeVisitor
visitLookupSwitchInsn
in interface CodeVisitor
dflt
- beginning of the default handler block.keys
- the values of the keys.labels
- beginnings of the handler blocks. labels[i] is the
beginning of the handler block for the keys[i] key.public void visitMultiANewArrayInsn(java.lang.String desc, int dims)
CodeVisitor
visitMultiANewArrayInsn
in interface CodeVisitor
desc
- an array type descriptor (see Type
).dims
- number of dimensions of the array to allocate.public void visitTryCatchBlock(Label start, Label end, Label handler, java.lang.String type)
CodeVisitor
visitTryCatchBlock
in interface CodeVisitor
start
- beginning of the exception handler's scope (inclusive).end
- end of the exception handler's scope (exclusive).handler
- beginning of the exception handler's code.type
- internal name of the type of exceptions handled by the handler,
or null to catch any exceptions (for "finally" blocks).public void visitMaxs(int maxStack, int maxLocals)
CodeVisitor
visitMaxs
in interface CodeVisitor
maxStack
- maximum stack size of the method.maxLocals
- maximum number of local variables for the method.public void visitLocalVariable(java.lang.String name, java.lang.String desc, Label start, Label end, int index)
CodeVisitor
visitLocalVariable
in interface CodeVisitor
name
- the name of a local variable.desc
- the type descriptor of this local variable.start
- the first instruction corresponding to the scope of this
local variable (inclusive).end
- the last instruction corresponding to the scope of this
local variable (exclusive).index
- the local variable's index.public void visitLineNumber(int line, Label start)
CodeVisitor
visitLineNumber
in interface CodeVisitor
line
- a line number. This number refers to the source file
from which the class was compiled.start
- the first instruction corresponding to this line number.public void visitAttribute(Attribute attr)
CodeVisitor
visitAttribute
in interface CodeVisitor
attr
- a non standard code attribute. Must not be null.public java.util.List getText()
text
.public abstract void printInsn(int opcode)
opcode
- the opcode of the instruction to be printed. This opcode is
either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2,
ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1,
FCONST_2, DCONST_0, DCONST_1,
IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD,
IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE,
SASTORE,
POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP,
IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL,
DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG,
FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR,
LOR, IXOR, LXOR,
I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C,
I2S,
LCMP, FCMPL, FCMPG, DCMPL, DCMPG,
IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN,
ARRAYLENGTH,
ATHROW,
MONITORENTER, or MONITOREXIT.public abstract void printIntInsn(int opcode, int operand)
opcode
- the opcode of the instruction to be printed. This opcode is
either BIPUSH, SIPUSH or NEWARRAY.operand
- the operand of the instruction to be printed.public abstract void printVarInsn(int opcode, int var)
opcode
- the opcode of the local variable instruction to be printed.
This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE,
LSTORE, FSTORE, DSTORE, ASTORE or RET.var
- the operand of the instruction to be printed. This operand is
the index of a local variable.public abstract void printTypeInsn(int opcode, java.lang.String desc)
opcode
- the opcode of the type instruction to be printed. This opcode
is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.desc
- the operand of the instruction to be printed. This operand is
must be a fully qualified class name in internal form, or a the type
descriptor of an array type (see Type
).public abstract void printFieldInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc)
opcode
- the opcode of the type instruction to be printed. This opcode
is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.owner
- the internal name of the field's owner class (see getInternalName
).name
- the field's name.desc
- the field's descriptor (see Type
).public abstract void printMethodInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc)
opcode
- the opcode of the type instruction to be printed. This opcode
is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or
INVOKEINTERFACE.owner
- the internal name of the method's owner class (see getInternalName
).name
- the method's name.desc
- the method's descriptor (see Type
).public abstract void printJumpInsn(int opcode, Label label)
opcode
- the opcode of the type instruction to be printed. 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.label
- the operand of the instruction to be printed. This operand is
a label that designates the instruction to which the jump instruction
may jump.public abstract void printLabel(Label label)
label
- a Label
object.public abstract void printLdcInsn(java.lang.Object cst)
cst
- the constant to be loaded on the stack. This parameter must be
a non null Integer
, a Float
, a Long
, a Double
or a String
.public abstract void printIincInsn(int var, int increment)
var
- index of the local variable to be incremented.increment
- amount to increment the local variable by.public abstract void printTableSwitchInsn(int min, int max, Label dflt, Label[] labels)
min
- the minimum key value.max
- the maximum key value.dflt
- beginning of the default handler block.labels
- beginnings of the handler blocks. labels[i] is the
beginning of the handler block for the min + i key.public abstract void printLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
dflt
- beginning of the default handler block.keys
- the values of the keys.labels
- beginnings of the handler blocks. labels[i] is the
beginning of the handler block for the keys[i] key.public abstract void printMultiANewArrayInsn(java.lang.String desc, int dims)
desc
- an array type descriptor (see Type
).dims
- number of dimensions of the array to allocate.public abstract void printTryCatchBlock(Label start, Label end, Label handler, java.lang.String type)
start
- beginning of the exception handler's scope (inclusive).end
- end of the exception handler's scope (exclusive).handler
- beginning of the exception handler's code.type
- internal name of the type of exceptions handled by the handler,
or null to catch any exceptions (for "finally" blocks).public abstract void printMaxs(int maxStack, int maxLocals)
maxStack
- maximum stack size of the method.maxLocals
- maximum number of local variables for the method.public abstract void printLocalVariable(java.lang.String name, java.lang.String desc, Label start, Label end, int index)
name
- the name of a local variable.desc
- the type descriptor of this local variable.start
- the first instruction corresponding to the scope of this
local variable (inclusive).end
- the last instruction corresponding to the scope of this
local variable (exclusive).index
- the local variable's index.public abstract void printLineNumber(int line, Label start)
line
- a line number. This number refers to the source file
from which the class was compiled.start
- the first instruction corresponding to this line number.public abstract void printAttribute(Attribute attr)
attr
- a non standard code attribute.
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |