at.dms.classfile
Class PushLiteralInstruction

java.lang.Object
  at.dms.classfile.AbstractInstructionAccessor
      at.dms.classfile.Instruction
          at.dms.classfile.PushLiteralInstruction

All Implemented Interfaces:

Constants, InstructionAccessor

public class PushLiteralInstruction
extends Instruction

This class encapsulates the instructions pushing a literal on the stack: bipush, sipush, ldc, ldc_w, ldc2_w, dconst_d, fconst_f, iconst_i, lconst_l

Field Summary

Fields inherited from interface at.dms.classfile.Constants

ACC_ABSTRACT, ACC_FINAL, ACC_INLINE, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, ATT_CODE, ATT_CONSTANTVALUE, ATT_DEPRECATED, ATT_EXCEPTIONS, ATT_GENERIC, ATT_INNERCLASSES, ATT_LINENUMBERTABLE, ATT_LOCALVARIABLETABLE, ATT_SOURCEFILE, ATT_SYNTHETIC, CST_CLASS, CST_DOUBLE, CST_FIELD, CST_FLOAT, CST_INTEGER, CST_INTERFACEMETHOD, CST_LONG, CST_METHOD, CST_NAMEANDTYPE, CST_STRING, CST_UTF8, ENV_DEBUG_MODE, ENV_USE_CACHE, JAVA_MAGIC, JAVA_MAJOR, JAVA_MINOR, MAX_CODE_PER_METHOD, opc_aaload, opc_aastore, opc_aconst_null, opc_aload, opc_aload_0, opc_aload_1, opc_aload_2, opc_aload_3, opc_anewarray, opc_areturn, opc_arraylength, opc_astore, opc_astore_0, opc_astore_1, opc_astore_2, opc_astore_3, opc_athrow, opc_baload, opc_bastore, opc_bipush, opc_caload, opc_castore, opc_checkcast, opc_d2f, opc_d2i, opc_d2l, opc_dadd, opc_daload, opc_dastore, opc_dcmpg, opc_dcmpl, opc_dconst_0, opc_dconst_1, opc_ddiv, opc_dload, opc_dload_0, opc_dload_1, opc_dload_2, opc_dload_3, opc_dmul, opc_dneg, opc_drem, opc_dreturn, opc_dstore, opc_dstore_0, opc_dstore_1, opc_dstore_2, opc_dstore_3, opc_dsub, opc_dup, opc_dup_x1, opc_dup_x2, opc_dup2, opc_dup2_x1, opc_dup2_x2, opc_f2d, opc_f2i, opc_f2l, opc_fadd, opc_faload, opc_fastore, opc_fcmpg, opc_fcmpl, opc_fconst_0, opc_fconst_1, opc_fconst_2, opc_fdiv, opc_fload, opc_fload_0, opc_fload_1, opc_fload_2, opc_fload_3, opc_fmul, opc_fneg, opc_frem, opc_freturn, opc_fstore, opc_fstore_0, opc_fstore_1, opc_fstore_2, opc_fstore_3, opc_fsub, opc_getfield, opc_getstatic, opc_goto, opc_goto_w, opc_i2b, opc_i2c, opc_i2d, opc_i2f, opc_i2l, opc_i2s, opc_iadd, opc_iaload, opc_iand, opc_iastore, opc_iconst_0, opc_iconst_1, opc_iconst_2, opc_iconst_3, opc_iconst_4, opc_iconst_5, opc_iconst_m1, opc_idiv, opc_if_acmpeq, opc_if_acmpne, opc_if_icmpeq, opc_if_icmpge, opc_if_icmpgt, opc_if_icmple, opc_if_icmplt, opc_if_icmpne, opc_ifeq, opc_ifge, opc_ifgt, opc_ifle, opc_iflt, opc_ifne, opc_ifnonnull, opc_ifnull, opc_iinc, opc_iload, opc_iload_0, opc_iload_1, opc_iload_2, opc_iload_3, opc_imul, opc_ineg, opc_instanceof, opc_invokeinterface, opc_invokespecial, opc_invokestatic, opc_invokevirtual, opc_ior, opc_irem, opc_ireturn, opc_ishl, opc_ishr, opc_istore, opc_istore_0, opc_istore_1, opc_istore_2, opc_istore_3, opc_isub, opc_iushr, opc_ixor, opc_jsr, opc_jsr_w, opc_l2d, opc_l2f, opc_l2i, opc_ladd, opc_laload, opc_land, opc_lastore, opc_lcmp, opc_lconst_0, opc_lconst_1, opc_ldc, opc_ldc_w, opc_ldc2_w, opc_ldiv, opc_lload, opc_lload_0, opc_lload_1, opc_lload_2, opc_lload_3, opc_lmul, opc_lneg, opc_lookupswitch, opc_lor, opc_lrem, opc_lreturn, opc_lshl, opc_lshr, opc_lstore, opc_lstore_0, opc_lstore_1, opc_lstore_2, opc_lstore_3, opc_lsub, opc_lushr, opc_lxor, opc_monitorenter, opc_monitorexit, opc_multianewarray, opc_new, opc_newarray, opc_nop, opc_pop, opc_pop2, opc_putfield, opc_putstatic, opc_ret, opc_return, opc_saload, opc_sastore, opc_sipush, opc_swap, opc_tableswitch, opc_wide, opc_xxxunusedxxx, POO_ASCII_CONSTANT, POO_CLASS_CONSTANT, POO_DOUBLE_CONSTANT, POO_FLOAT_CONSTANT, POO_INTEGER_CONSTANT, POO_LONG_CONSTANT, POO_NAT_CONSTANT, POO_REF_CONSTANT, POO_STRING_CONSTANT, TYP_ADDRESS, TYP_DOUBLE, TYP_FLOAT, TYP_INT, TYP_LONG, TYP_REFERENCE, TYP_VOID

Constructor Summary

PushLiteralInstruction(double value)
Constructs an instruction that pushes a double literal on the stack.

PushLiteralInstruction(float value)
Constructs an instruction that pushes a float literal on the stack.

PushLiteralInstruction(int value)
Constructs an instruction that pushes a int literal on the stack.

PushLiteralInstruction(long value)
Constructs an instruction that pushes a long literal on the stack.

PushLiteralInstruction(PooledConstant cst, boolean wide)
Constructs an instruction that pushes a string literal on the stack from a class file stream.

PushLiteralInstruction(String value)
Constructs an instruction that pushes a string literal on the stack.

Method Summary

boolean	canComplete() Returns true iff control flow can reach the next instruction in textual order.
Object	getLiteral() Returns the value of this literal
int	getPushedOnStack() Returns the size of data pushed on the stack by this instruction
byte	getReturnType() Returns the type pushed on the stack
int	getStack() Return the amount of stack (positive or negative) used by this instruction
boolean	isLiteral() Return true if this instruction is a literal

Methods inherited from class at.dms.classfile.Instruction

dump, getOpcode, getPoppedFromStack

Methods inherited from class at.dms.classfile.AbstractInstructionAccessor

deepClone, deepCloneInto, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

PushLiteralInstruction

public PushLiteralInstruction(double value)

Constructs an instruction that pushes a double literal on the stack.

Parameters:

value - a double literal

PushLiteralInstruction

public PushLiteralInstruction(float value)

Constructs an instruction that pushes a float literal on the stack.

Parameters:

value - a float literal

PushLiteralInstruction

public PushLiteralInstruction(int value)

Constructs an instruction that pushes a int literal on the stack.

Parameters:

value - a int literal

PushLiteralInstruction

public PushLiteralInstruction(long value)

Constructs an instruction that pushes a long literal on the stack.

Parameters:

value - a long literal

PushLiteralInstruction

public PushLiteralInstruction(String value)

Constructs an instruction that pushes a string literal on the stack.

Parameters:

value - a string literal

PushLiteralInstruction

public PushLiteralInstruction(PooledConstant cst,
                              boolean wide)

Constructs an instruction that pushes a string literal on the stack from a class file stream.

Parameters:

cst - a pooled constant

wide - does this constant use 2 slots in the pool ?

Method Detail

canComplete

public boolean canComplete()

Returns true iff control flow can reach the next instruction in textual order.

Specified by:

canComplete in class Instruction

isLiteral

public boolean isLiteral()

Return true if this instruction is a literal

Overrides:

isLiteral in class Instruction

getLiteral

public Object getLiteral()

Returns the value of this literal

getPushedOnStack

public int getPushedOnStack()

Returns the size of data pushed on the stack by this instruction

Specified by:

getPushedOnStack in class Instruction

getReturnType

public byte getReturnType()

Returns the type pushed on the stack

Specified by:

getReturnType in class Instruction

getStack

public int getStack()

Return the amount of stack (positive or negative) used by this instruction

Specified by:

getStack in class Instruction