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java.lang.Objectorg.objectweb.asm.MethodAdapter
org.objectweb.asm.commons.AnalyzerAdapter
A MethodAdapter
that keeps track of stack map frame changes between
visitFrame
calls. This
adapter must be used with the
ClassReader.EXPAND_FRAMES
option. Each visitXXX
instruction delegates to the next visitor in the chain, if any, and then
simulates the effect of this instruction on the stack map frame, represented
by locals
and stack
. The next visitor in the chain can get
the state of the stack map frame before each instruction by reading
the value of these fields in its visitXXX methods (this requires a
reference to the AnalyzerAdapter that is before it in the chain).
Field Summary | |
List |
locals
List of the local variable slots for current execution
frame. |
List |
stack
List of the operand stack slots for current execution
frame. |
Fields inherited from class org.objectweb.asm.MethodAdapter |
mv |
Constructor Summary | |
AnalyzerAdapter(String owner,
int access,
String name,
String desc,
MethodVisitor mv)
Creates a new AnalyzerAdapter . |
Method Summary | |
void |
visitFieldInsn(int opcode,
String owner,
String name,
String desc)
Visits a field instruction. |
void |
visitFrame(int type,
int nLocal,
Object[] local,
int nStack,
Object[] stack)
Visits the current state of the local variables and operand stack elements. |
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(Object cst)
Visits a LDC instruction. |
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,
String owner,
String name,
String desc)
Visits a method instruction. |
void |
visitMultiANewArrayInsn(String desc,
int dims)
Visits a MULTIANEWARRAY instruction. |
void |
visitTableSwitchInsn(int min,
int max,
Label dflt,
Label[] labels)
Visits a TABLESWITCH instruction. |
void |
visitTypeInsn(int opcode,
String type)
Visits a type instruction. |
void |
visitVarInsn(int opcode,
int var)
Visits a local variable instruction. |
Methods inherited from class org.objectweb.asm.MethodAdapter |
visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitLineNumber, visitLocalVariable, visitParameterAnnotation, visitTryCatchBlock |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public List locals
List
of the local variable slots for current execution
frame. Primitive types are represented by Opcodes.TOP
,
Opcodes.INTEGER
, Opcodes.FLOAT
, Opcodes.LONG
,
Opcodes.DOUBLE
,Opcodes.NULL
or
Opcodes.UNINITIALIZED_THIS
(long and double are represented by a
two elements, the second one being TOP). Reference types are represented
by String objects (representing internal names), and uninitialized types
by Label objects (this label designates the NEW instruction that created
this uninitialized value). This field is null for unreacheable
instructions.
public List stack
List
of the operand stack slots for current execution
frame. Primitive types are represented by Opcodes.TOP
,
Opcodes.INTEGER
, Opcodes.FLOAT
, Opcodes.LONG
,
Opcodes.DOUBLE
,Opcodes.NULL
or
Opcodes.UNINITIALIZED_THIS
(long and double are represented by a
two elements, the second one being TOP). Reference types are represented
by String objects (representing internal names), and uninitialized types
by Label objects (this label designates the NEW instruction that created
this uninitialized value). This field is null for unreacheable
instructions.
Constructor Detail |
public AnalyzerAdapter(String owner, int access, String name, String desc, MethodVisitor mv)
AnalyzerAdapter
.
owner
- the owner's class name.access
- the method's access flags (see Opcodes
).name
- the method's name.desc
- the method's descriptor (see Type
).mv
- the method visitor to which this adapter delegates calls. May
be null.Method Detail |
public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack)
MethodVisitor
V1_6
. Opcodes.F_SAME
representing frame with exactly the same
locals as the previous frame and with the empty stack.Opcodes.F_SAME1
representing frame with exactly the same locals as the previous frame and
with single value on the stack (nStack
is 1 and
stack[0]
contains value for the type of the stack item).Opcodes.F_APPEND
representing frame with current locals are
the same as the locals in the previous frame, except that additional
locals are defined (nLocal
is 1, 2 or 3 and
local
elements contains values representing added types).Opcodes.F_CHOP
representing frame with current locals are
the same as the locals in the previous frame, except that the last 1-3
locals are absent and with the empty stack (nLocals
is 1,
2 or 3). Opcodes.F_FULL
representing complete frame
data.
visitFrame
in interface MethodVisitor
visitFrame
in class MethodAdapter
public void visitInsn(int opcode)
MethodVisitor
visitInsn
in interface MethodVisitor
visitInsn
in class MethodAdapter
public void visitIntInsn(int opcode, int operand)
MethodVisitor
visitIntInsn
in interface MethodVisitor
visitIntInsn
in class MethodAdapter
public void visitVarInsn(int opcode, int var)
MethodVisitor
visitVarInsn
in interface MethodVisitor
visitVarInsn
in class MethodAdapter
public void visitTypeInsn(int opcode, String type)
MethodVisitor
visitTypeInsn
in interface MethodVisitor
visitTypeInsn
in class MethodAdapter
public void visitFieldInsn(int opcode, String owner, String name, String desc)
MethodVisitor
visitFieldInsn
in interface MethodVisitor
visitFieldInsn
in class MethodAdapter
public void visitMethodInsn(int opcode, String owner, String name, String desc)
MethodVisitor
visitMethodInsn
in interface MethodVisitor
visitMethodInsn
in class MethodAdapter
public void visitJumpInsn(int opcode, Label label)
MethodVisitor
visitJumpInsn
in interface MethodVisitor
visitJumpInsn
in class MethodAdapter
public void visitLabel(Label label)
MethodVisitor
visitLabel
in interface MethodVisitor
visitLabel
in class MethodAdapter
public void visitLdcInsn(Object cst)
MethodVisitor
visitLdcInsn
in interface MethodVisitor
visitLdcInsn
in class MethodAdapter
public void visitIincInsn(int var, int increment)
MethodVisitor
visitIincInsn
in interface MethodVisitor
visitIincInsn
in class MethodAdapter
public void visitTableSwitchInsn(int min, int max, Label dflt, Label[] labels)
MethodVisitor
visitTableSwitchInsn
in interface MethodVisitor
visitTableSwitchInsn
in class MethodAdapter
public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
MethodVisitor
visitLookupSwitchInsn
in interface MethodVisitor
visitLookupSwitchInsn
in class MethodAdapter
public void visitMultiANewArrayInsn(String desc, int dims)
MethodVisitor
visitMultiANewArrayInsn
in interface MethodVisitor
visitMultiANewArrayInsn
in class MethodAdapter
public void visitMaxs(int maxStack, int maxLocals)
MethodVisitor
visitMaxs
in interface MethodVisitor
visitMaxs
in class MethodAdapter
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