Package com.android.dx.cf.code
Interface BytecodeArray.Visitor
- All Known Implementing Classes:
BasicBlocker
,BytecodeArray.BaseVisitor
,CodeObserver
- Enclosing class:
BytecodeArray
public static interface BytecodeArray.Visitor
Instruction visitor interface.
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Method Summary
Modifier and TypeMethodDescriptionint
Get previous bytecode offsetvoid
setPreviousOffset
(int offset) Set previous bytecode offsetvoid
visitBranch
(int opcode, int offset, int length, int target) Visits an instruction which has a branch target argument.void
visitConstant
(int opcode, int offset, int length, Constant cst, int value) Visits an instruction which has a (possibly synthetic) constant argument, and possibly also an additional literal integer argument.void
visitInvalid
(int opcode, int offset, int length) Visits an invalid instruction.void
visitLocal
(int opcode, int offset, int length, int idx, Type type, int value) Visits an instruction which has a local variable index argument.void
visitNewarray
(int offset, int length, CstType type, ArrayList<Constant> initVals) Visits a newarray instruction.void
visitNoArgs
(int opcode, int offset, int length, Type type) Visits an instruction which has no inline arguments (implicit or explicit).void
visitSwitch
(int opcode, int offset, int length, SwitchList cases, int padding) Visits a switch instruction.
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Method Details
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visitInvalid
void visitInvalid(int opcode, int offset, int length) Visits an invalid instruction.- Parameters:
opcode
- the opcodeoffset
- offset to the instructionlength
- length of the instruction, in bytes
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visitNoArgs
Visits an instruction which has no inline arguments (implicit or explicit).- Parameters:
opcode
- the opcodeoffset
- offset to the instructionlength
- length of the instruction, in bytestype
-non-null;
type the instruction operates on
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visitLocal
Visits an instruction which has a local variable index argument.- Parameters:
opcode
- the opcodeoffset
- offset to the instructionlength
- length of the instruction, in bytesidx
- the local variable indextype
-non-null;
the type of the accessed valuevalue
- additional literal integer argument, if salient (i.e., foriinc
)
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visitConstant
Visits an instruction which has a (possibly synthetic) constant argument, and possibly also an additional literal integer argument. In the case ofmultianewarray
, the argument is the count of dimensions. In the case ofinvokeinterface
, the argument is the parameter count or'ed with the should-be-zero value left-shifted by 8. In the case of entries of typeint
, thevalue
field always holds the raw value (for convenience of clients).Note: In order to avoid giving it a barely-useful visitor all its own,
newarray
also uses this form, passingvalue
as the array type code andcst
as aCstType
instance corresponding to the array type.- Parameters:
opcode
- the opcodeoffset
- offset to the instructionlength
- length of the instruction, in bytescst
-non-null;
the constantvalue
- additional literal integer argument, if salient (ignore if not)
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visitBranch
void visitBranch(int opcode, int offset, int length, int target) Visits an instruction which has a branch target argument.- Parameters:
opcode
- the opcodeoffset
- offset to the instructionlength
- length of the instruction, in bytestarget
- the absolute (not relative) branch target
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visitSwitch
Visits a switch instruction.- Parameters:
opcode
- the opcodeoffset
- offset to the instructionlength
- length of the instruction, in bytescases
-non-null;
list of (value, target) pairs, plus the default targetpadding
- the bytes found in the padding area (if any), packed
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visitNewarray
Visits a newarray instruction.- Parameters:
offset
- offset to the instructionlength
- length of the instruction, in bytestype
-non-null;
the type of the arrayinitVals
-non-null;
list of bytecode offsets for init values
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setPreviousOffset
void setPreviousOffset(int offset) Set previous bytecode offset- Parameters:
offset
- offset of the previous fully parsed bytecode
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getPreviousOffset
int getPreviousOffset()Get previous bytecode offset- Returns:
- return the recored offset of the previous bytecode
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