Package javassist.bytecode.stackmap

Class Tracer

  • All Implemented Interfaces:
    TypeTag
    Direct Known Subclasses:
    MapMaker
    public abstract class Tracer
extends java.lang.Object
implements TypeTag

    • Field Detail

      • returnType

        protected java.lang.String returnType

      • stackTop

        protected int stackTop

      • stackTypes

        protected TypeData[] stackTypes

      • localsTypes

        protected TypeData[] localsTypes

    • Constructor Detail

      • Tracer

        public Tracer​(ClassPool classes,
              ConstPool cp,
              int maxStack,
              int maxLocals,
              java.lang.String retType)

      • Tracer

        public Tracer​(Tracer t)

    • Method Detail

      • doOpcode

        protected int doOpcode​(int pos,
                       byte[] code)
                throws BadBytecode
        Does abstract interpretation on the given bytecode instruction. It records whether or not a local variable (i.e. register) is accessed. If the instruction requires that a local variable or a stack element has a more specific type, this method updates the type of it.
        Parameters:
        pos - the position of the instruction.
        Returns:
        the size of the instruction at POS.
        Throws:
        BadBytecode

      • visitBranch

        protected void visitBranch​(int pos,
                           byte[] code,
                           int offset)
                    throws BadBytecode
        Throws:
        BadBytecode

      • visitGoto

        protected void visitGoto​(int pos,
                         byte[] code,
                         int offset)
                  throws BadBytecode
        Throws:
        BadBytecode

      • visitTableSwitch

        protected void visitTableSwitch​(int pos,
                                byte[] code,
                                int n,
                                int offsetPos,
                                int defaultOffset)
                         throws BadBytecode
        Parameters:
        pos - the position of TABLESWITCH
        code - bytecode
        n - the number of case labels
        offsetPos - the position of the branch-target table.
        defaultOffset - the offset to the default branch target.
        Throws:
        BadBytecode

      • visitLookupSwitch

        protected void visitLookupSwitch​(int pos,
                                 byte[] code,
                                 int n,
                                 int pairsPos,
                                 int defaultOffset)
                          throws BadBytecode
        Parameters:
        pos - the position of LOOKUPSWITCH
        code - bytecode
        n - the number of case labels
        pairsPos - the position of the table of pairs of a value and a branch target.
        defaultOffset - the offset to the default branch target.
        Throws:
        BadBytecode

      • visitJSR

        protected void visitJSR​(int pos,
                        byte[] code)
                 throws BadBytecode
        Invoked when the visited instruction is jsr. Java6 or later does not allow using RET.
        Throws:
        BadBytecode

      • visitRET

        protected void visitRET​(int pos,
                        byte[] code)
                 throws BadBytecode
        Invoked when the visited instruction is ret or wide ret. Java6 or later does not allow using RET.
        Throws:
        BadBytecode

      • doOpcode0_53

        private int doOpcode0_53​(int pos,
                         byte[] code,
                         int op)
                  throws BadBytecode
        Throws:
        BadBytecode

      • doLDC

        private void doLDC​(int index)

      • doXLOAD

        private int doXLOAD​(TypeData type,
                    byte[] code,
                    int pos)

      • doXLOAD

        private int doXLOAD​(int localVar,
                    TypeData type)

      • doALOAD

        private int doALOAD​(int localVar)

      • doOpcode54_95

        private int doOpcode54_95​(int pos,
                          byte[] code,
                          int op)
                   throws BadBytecode
        Throws:
        BadBytecode

      • doXSTORE

        private int doXSTORE​(int pos,
                     byte[] code,
                     TypeData type)

      • doXSTORE

        private int doXSTORE​(int index,
                     TypeData type)

      • doASTORE

        private int doASTORE​(int index)

      • doDUP_XX

        private void doDUP_XX​(int delta,
                      int len)

      • doOpcode96_147

        private int doOpcode96_147​(int pos,
                           byte[] code,
                           int op)

      • doOpcode148_201

        private int doOpcode148_201​(int pos,
                            byte[] code,
                            int op)
                     throws BadBytecode
        Throws:
        BadBytecode

      • doWIDE_XLOAD

        private void doWIDE_XLOAD​(int pos,
                          byte[] code,
                          TypeData type)

      • doWIDE_STORE

        private void doWIDE_STORE​(int pos,
                          byte[] code,
                          TypeData type)

      • doPutField

        private int doPutField​(int pos,
                       byte[] code,
                       boolean notStatic)
                throws BadBytecode
        Throws:
        BadBytecode

      • doGetField

        private int doGetField​(int pos,
                       byte[] code,
                       boolean notStatic)
                throws BadBytecode
        Throws:
        BadBytecode

      • setFieldTarget

        private void setFieldTarget​(boolean notStatic,
                            int index)
                     throws BadBytecode
        Throws:
        BadBytecode

      • doNEWARRAY

        private int doNEWARRAY​(int pos,
                       byte[] code)

      • doMultiANewArray

        private int doMultiANewArray​(int pos,
                             byte[] code)

      • doInvokeMethod

        private int doInvokeMethod​(int pos,
                           byte[] code,
                           boolean notStatic)
                    throws BadBytecode
        Throws:
        BadBytecode

      • constructorCalled

        private void constructorCalled​(TypeData target,
                               int offset)

      • doInvokeIntfMethod

        private int doInvokeIntfMethod​(int pos,
                               byte[] code)
                        throws BadBytecode
        Throws:
        BadBytecode

      • doInvokeDynamic

        private int doInvokeDynamic​(int pos,
                            byte[] code)
                     throws BadBytecode
        Throws:
        BadBytecode

      • pushMemberType

        private void pushMemberType​(java.lang.String descriptor)

      • getFieldClassName

        private static java.lang.String getFieldClassName​(java.lang.String desc,
                                                  int index)

      • checkParamTypes

        private void checkParamTypes​(java.lang.String desc,
                             int i)
                      throws BadBytecode
        Throws:
        BadBytecode