org.objectweb.asm.tree.analysis

## Class SourceInterpreter

- java.lang.Object
- - org.objectweb.asm.tree.analysis.Interpreter<SourceValue>
  - - org.objectweb.asm.tree.analysis.SourceInterpreter

- All Implemented Interfaces:
    Opcodes

      public class SourceInterpreter
      extends Interpreter<SourceValue>
      implements Opcodes

  An `Interpreter` for `SourceValue` values.
  Author:
    Eric Bruneton

- - ### Field Summary

    - ### Fields inherited from class org.objectweb.asm.tree.analysis.Interpreter

      `api`

    - ### Fields inherited from interface org.objectweb.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

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `` | `SourceInterpreter()`
    `protected` | `SourceInterpreter(int api)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `SourceValue` | `binaryOperation(AbstractInsnNode insn, SourceValue value1, SourceValue value2)` Interprets a bytecode instruction with two arguments.
    `SourceValue` | `copyOperation(AbstractInsnNode insn, SourceValue value)` Interprets a bytecode instruction that moves a value on the stack or to or from local variables.
    `SourceValue` | `merge(SourceValue d, SourceValue w)` Merges two values.
    `SourceValue` | `naryOperation(AbstractInsnNode insn, List<? extends SourceValue> values)` Interprets a bytecode instruction with a variable number of arguments.
    `SourceValue` | `newOperation(AbstractInsnNode insn)` Interprets a bytecode instruction without arguments.
    `SourceValue` | `newValue(Type type)` Creates a new value that represents the given type.
    `void` | `returnOperation(AbstractInsnNode insn, SourceValue value, SourceValue expected)` Interprets a bytecode return instruction.
    `SourceValue` | `ternaryOperation(AbstractInsnNode insn, SourceValue value1, SourceValue value2, SourceValue value3)` Interprets a bytecode instruction with three arguments.
    `SourceValue` | `unaryOperation(AbstractInsnNode insn, SourceValue value)` Interprets a bytecode instruction with a single argument.

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### SourceInterpreter

          public SourceInterpreter()

    - #### SourceInterpreter

          protected SourceInterpreter(int api)

  - ### Method Detail

    - #### newValue

          public SourceValue newValue(Type type)

      Description copied from class: `Interpreter`
      Creates a new value that represents the given type. Called for method parameters (including `this`), exception handler variable and with `null` type for variables reserved by long and double types.
      Specified by:
        `newValue` in class `Interpreter<SourceValue>`
      Parameters:
        `type` - a primitive or reference type, or `null` to represent an uninitialized value.
      Returns:
        a value that represents the given type. The size of the returned value must be equal to the size of the given type.

    - #### newOperation

          public SourceValue newOperation(AbstractInsnNode insn)

      Description copied from class: `Interpreter`
      Interprets a bytecode instruction without arguments. This method is called for the following opcodes: 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, BIPUSH, SIPUSH, LDC, JSR, GETSTATIC, NEW
      Specified by:
        `newOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
      Returns:
        the result of the interpretation of the given instruction.

    - #### copyOperation

          public SourceValue copyOperation(AbstractInsnNode insn,
                                           SourceValue value)

      Description copied from class: `Interpreter`
      Interprets a bytecode instruction that moves a value on the stack or to or from local variables. This method is called for the following opcodes: ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP
      Specified by:
        `copyOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
        `value` - the value that must be moved by the instruction.
      Returns:
        the result of the interpretation of the given instruction. The returned value must be `equal` to the given value.

    - #### unaryOperation

          public SourceValue unaryOperation(AbstractInsnNode insn,
                                            SourceValue value)

      Description copied from class: `Interpreter`
      Interprets a bytecode instruction with a single argument. This method is called for the following opcodes: INEG, LNEG, FNEG, DNEG, IINC, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, TABLESWITCH, LOOKUPSWITCH, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, PUTSTATIC, GETFIELD, NEWARRAY, ANEWARRAY, ARRAYLENGTH, ATHROW, CHECKCAST, INSTANCEOF, MONITORENTER, MONITOREXIT, IFNULL, IFNONNULL
      Specified by:
        `unaryOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
        `value` - the argument of the instruction to be interpreted.
      Returns:
        the result of the interpretation of the given instruction.

    - #### binaryOperation

          public SourceValue binaryOperation(AbstractInsnNode insn,
                                             SourceValue value1,
                                             SourceValue value2)

      Description copied from class: `Interpreter`
      Interprets a bytecode instruction with two arguments. This method is called for the following opcodes: IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, PUTFIELD
      Specified by:
        `binaryOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
        `value1` - the first argument of the instruction to be interpreted.
        `value2` - the second argument of the instruction to be interpreted.
      Returns:
        the result of the interpretation of the given instruction.

    - #### ternaryOperation

          public SourceValue ternaryOperation(AbstractInsnNode insn,
                                              SourceValue value1,
                                              SourceValue value2,
                                              SourceValue value3)

      Description copied from class: `Interpreter`
      Interprets a bytecode instruction with three arguments. This method is called for the following opcodes: IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE
      Specified by:
        `ternaryOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
        `value1` - the first argument of the instruction to be interpreted.
        `value2` - the second argument of the instruction to be interpreted.
        `value3` - the third argument of the instruction to be interpreted.
      Returns:
        the result of the interpretation of the given instruction.

    - #### naryOperation

          public SourceValue naryOperation(AbstractInsnNode insn,
                                           List<? extends SourceValue> values)

      Description copied from class: `Interpreter`
      Interprets a bytecode instruction with a variable number of arguments. This method is called for the following opcodes: INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC, INVOKEINTERFACE, MULTIANEWARRAY and INVOKEDYNAMIC
      Specified by:
        `naryOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
        `values` - the arguments of the instruction to be interpreted.
      Returns:
        the result of the interpretation of the given instruction.

    - #### returnOperation

          public void returnOperation(AbstractInsnNode insn,
                                      SourceValue value,
                                      SourceValue expected)

      Description copied from class: `Interpreter`
      Interprets a bytecode return instruction. This method is called for the following opcodes: IRETURN, LRETURN, FRETURN, DRETURN, ARETURN
      Specified by:
        `returnOperation` in class `Interpreter<SourceValue>`
      Parameters:
        `insn` - the bytecode instruction to be interpreted.
        `value` - the argument of the instruction to be interpreted.
        `expected` - the expected return type of the analyzed method.

    - #### merge

          public SourceValue merge(SourceValue d,
                                   SourceValue w)

      Description copied from class: `Interpreter`
      Merges two values. The merge operation must return a value that represents both values (for instance, if the two values are two types, the merged value must be a common super type of the two types. If the two values are integer intervals, the merged value must be an interval that contains the previous ones. Likewise for other types of values).
      Specified by:
        `merge` in class `Interpreter<SourceValue>`
      Parameters:
        `d` - a value.
        `w` - another value.
      Returns:
        the merged value. If the merged value is equal to `v`, this method must return `v`.