程序包 cn.taketoday.bytecode.tree.analysis

类 BasicInterpreter

java.lang.Object
cn.taketoday.bytecode.tree.analysis.Interpreter<BasicValue>
cn.taketoday.bytecode.tree.analysis.BasicInterpreter
所有已实现的接口:
Opcodes
直接已知子类:
BasicVerifier
public class BasicInterpreter extends Interpreter<BasicValue> implements Opcodes
An Interpreter for BasicValue values.
作者:
Eric Bruneton, Bing Ran

  • 字段详细资料

    • NULL_TYPE

      public static final Type NULL_TYPE
      Special type used for the null literal. This is an object reference type with descriptor 'Lnull;'.

  • 构造器详细资料

    • BasicInterpreter

      public BasicInterpreter()
      Constructs a new BasicInterpreter.

  • 方法详细资料

    • newValue

      public BasicValue newValue(Type type)
      从类复制的说明: 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.

      An interpreter may choose to implement one or more of Interpreter.newReturnTypeValue(Type), Interpreter.newParameterValue(boolean, int, Type), Interpreter.newEmptyValue(int), Interpreter.newExceptionValue(TryCatchBlockNode, Frame, Type) to distinguish different types of new value.

      指定者:
      newValue 在类中 Interpreter<BasicValue>
      参数:
      type - a primitive or reference type, or null to represent an uninitialized value.
      返回:
      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 BasicValue newOperation(AbstractInsnNode insn) throws AnalyzerException
      从类复制的说明: 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

      指定者:
      newOperation 在类中 Interpreter<BasicValue>
      参数:
      insn - the bytecode instruction to be interpreted.
      返回:
      the result of the interpretation of the given instruction.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • copyOperation

      public BasicValue copyOperation(AbstractInsnNode insn, BasicValue value) throws AnalyzerException
      从类复制的说明: 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

      指定者:
      copyOperation 在类中 Interpreter<BasicValue>
      参数:
      insn - the bytecode instruction to be interpreted.
      value - the value that must be moved by the instruction.
      返回:
      the result of the interpretation of the given instruction. The returned value must be equal to the given value.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • unaryOperation

      public BasicValue unaryOperation(AbstractInsnNode insn, BasicValue value) throws AnalyzerException
      从类复制的说明: 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

      指定者:
      unaryOperation 在类中 Interpreter<BasicValue>
      参数:
      insn - the bytecode instruction to be interpreted.
      value - the argument of the instruction to be interpreted.
      返回:
      the result of the interpretation of the given instruction.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • binaryOperation

      public BasicValue binaryOperation(AbstractInsnNode insn, BasicValue value1, BasicValue value2) throws AnalyzerException
      从类复制的说明: 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

      指定者:
      binaryOperation 在类中 Interpreter<BasicValue>
      参数:
      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.
      返回:
      the result of the interpretation of the given instruction.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • ternaryOperation

      public BasicValue ternaryOperation(AbstractInsnNode insn, BasicValue value1, BasicValue value2, BasicValue value3) throws AnalyzerException
      从类复制的说明: Interpreter
      Interprets a bytecode instruction with three arguments. This method is called for the following opcodes:

      IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE

      指定者:
      ternaryOperation 在类中 Interpreter<BasicValue>
      参数:
      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.
      返回:
      the result of the interpretation of the given instruction.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • naryOperation

      public BasicValue naryOperation(AbstractInsnNode insn, List<? extends BasicValue> values) throws AnalyzerException
      从类复制的说明: 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

      指定者:
      naryOperation 在类中 Interpreter<BasicValue>
      参数:
      insn - the bytecode instruction to be interpreted.
      values - the arguments of the instruction to be interpreted.
      返回:
      the result of the interpretation of the given instruction.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • returnOperation

      public void returnOperation(AbstractInsnNode insn, BasicValue value, BasicValue expected) throws AnalyzerException
      从类复制的说明: Interpreter
      Interprets a bytecode return instruction. This method is called for the following opcodes:

      IRETURN, LRETURN, FRETURN, DRETURN, ARETURN

      指定者:
      returnOperation 在类中 Interpreter<BasicValue>
      参数:
      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.
      抛出:
      AnalyzerException - if an error occurred during the interpretation.

    • merge

      public BasicValue merge(BasicValue value1, BasicValue value2)
      从类复制的说明: 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).
      指定者:
      merge 在类中 Interpreter<BasicValue>
      参数:
      value1 - a value.
      value2 - another value.
      返回:
      the merged value. If the merged value is equal to value1, this method must return value1.