Field Detail

• protected static final int[] stdCompareCodes

  Jump opcodes used for primitive comparison results.

Constructor Detail

• public BinaryExpressionWriter(WriterController controller, MethodCaller arraySet, MethodCaller arrayGet)

  Creates a primitive-operation writer.

  Parameters:

  controller - the active writer controller

  arraySet - the helper used for array stores

  arrayGet - the helper used for array loads

Method Detail

• public boolean arrayGet(int operation, boolean simulate)

  Attempts to write an array-read operation.

  Parameters:

  operation - the token type

  simulate - whether to probe support without emitting bytecode

  Returns:

  true if the operation is an array read

• public boolean arraySet(boolean simulate)

  Writes an array-store operation.

  Parameters:

  simulate - whether to probe support without emitting bytecode

  Returns:

  always true

• protected abstract void doubleTwoOperands(org.objectweb.asm.MethodVisitor mv)

  Duplicates the two operands already on the operand stack.

  Parameters:

  mv - the current method visitor

• protected MethodCaller getArrayGetCaller()

  Returns:

  the helper used for primitive array loads

• protected ClassNode getArrayGetResultType()

  Returns:

  the result type produced by getArrayGetCaller()

• protected MethodCaller getArraySetCaller()

  Returns:

  the helper used for primitive array stores

• protected abstract int getBitwiseOperationBytecode(int type)

  Returns the bitwise opcode for the supplied token.

  Parameters:

  type - the normalized token index

  Returns:

  the ASM opcode

• protected abstract int getCompareCode()

  Returns:

  the ASM compare opcode used by this primitive type

• public WriterController getController()

  return writer controller

  Since:

  2.5.0

• protected abstract ClassNode getDevisionOpResultType()

  Returns:

  the result type for division operations

• protected abstract ClassNode getNormalOpResultType()

  Returns:

  the result type for normal arithmetic operations

• protected abstract int getShiftOperationBytecode(int type)

  Returns the shift opcode for the supplied token.

  Parameters:

  type - the normalized token index

  Returns:

  the ASM opcode

• protected abstract int getStandardOperationBytecode(int type)

  Returns the arithmetic opcode for the supplied token.

  Parameters:

  type - the normalized token index

  Returns:

  the ASM opcode

• protected abstract void removeTwoOperands(org.objectweb.asm.MethodVisitor mv)

  Removes the two operands already on the operand stack.

  Parameters:

  mv - the current method visitor

• public void setArraySetAndGet(MethodCaller arraySet, MethodCaller arrayGet)

  Replaces the helpers used for primitive array access.

  Parameters:

  arraySet - the array-store helper

  arrayGet - the array-load helper

• protected boolean supportsDivision()

  Returns:

  whether this primitive helper supports division bytecode directly

• public boolean write(int operation, boolean simulate)

  Attempts to write the supplied binary operation.

  Parameters:

  operation - the token type

  simulate - whether to probe support without emitting bytecode

  Returns:

  true if the operation is supported

• protected boolean writeBitwiseOp(int type, boolean simulate)

  writes some the bitwise operations. type is one of BITWISE_OR, BITWISE_AND, BITWISE_XOR

  Parameters:

  type - the token type

  Returns:

  true if a successful bitwise operation write

• protected boolean writeDivision(boolean simulate)

  Writes a division operation for the current primitive type.

  Parameters:

  simulate - whether to probe support without emitting bytecode

  Returns:

  true if division is supported

• protected abstract void writeMinusMinus(org.objectweb.asm.MethodVisitor mv)

  Emits a prefix/postfix decrement.

  Parameters:

  mv - the current method visitor

• protected abstract void writePlusPlus(org.objectweb.asm.MethodVisitor mv)

  Emits a prefix/postfix increment.

  Parameters:

  mv - the current method visitor

• public boolean writePostOrPrefixMethod(int operation, boolean simulate)

  Attempts to write a postfix or prefix increment/decrement operation.

  Parameters:

  operation - the token type

  simulate - whether to probe support without emitting bytecode

  Returns:

  true if the operation is supported

• protected boolean writeShiftOp(int type, boolean simulate)

  Write shifting operations. Type is one of LEFT_SHIFT, RIGHT_SHIFT, or RIGHT_SHIFT_UNSIGNED

  Parameters:

  type - the token type

  Returns:

  true on a successful shift operation write

• protected boolean writeSpaceship(int type, boolean simulate)

  Writes a spaceship comparison for the current primitive type.

  Parameters:

  type - the token type

  simulate - whether to probe support without emitting bytecode

  Returns:

  true if the operation is supported

• protected boolean writeStdCompare(int type, boolean simulate)

  writes some int standard operations for compares

  Parameters:

  type - the token type

  Returns:

  true if a successful std operator write

• protected boolean writeStdOperators(int type, boolean simulate)

  Writes a standard arithmetic operator for the current primitive type.

  Parameters:

  type - the token type

  simulate - whether to probe support without emitting bytecode

  Returns:

  true if the operation is supported