def s_checksum(block_name, algorithm="crc32", length=0, endian="<", name=None):
'''
Create a checksum block bound to the block with the specified name. You *can not* create a checksum for any
currently open blocks.
@type block_name: String
@param block_name: Name of block to apply sizer to
@type algorithm: String
@param algorithm: (Optional, def=crc32) Checksum algorithm to use. (crc32, adler32, md5, sha1)
@type length: Integer
@param length: (Optional, def=0) Length of checksum, specify 0 to auto-calculate
@type endian: Character
@param endian: (Optional, def=LITTLE_ENDIAN) Endianess of the bit field (LITTLE_ENDIAN: <, BIG_ENDIAN: >)
@type name: String
@param name: Name of this checksum field
'''
# you can't add a checksum for a block currently in the stack.
if block_name in blocks.CURRENT.block_stack:
raise sex.SullyRuntimeError(
"CAN N0T ADD A CHECKSUM FOR A BLOCK CURRENTLY IN THE STACK")
checksum = blocks.checksum(block_name, blocks.CURRENT, algorithm, length,
endian, name)
blocks.CURRENT.push(checksum)
def s_checksum (block_name, algorithm="crc32", length=0, endian="<", name=None):
'''
Create a checksum block bound to the block with the specified name. You *can not* create a checksum for any
currently open blocks.
@type block_name: String
@param block_name: Name of block to apply sizer to
@type algorithm: String
@param algorithm: (Optional, def=crc32) Checksum algorithm to use. (crc32, adler32, md5, sha1)
@type length: Integer
@param length: (Optional, def=0) Length of checksum, specify 0 to auto-calculate
@type endian: Character
@param endian: (Optional, def=LITTLE_ENDIAN) Endianess of the bit field (LITTLE_ENDIAN: <, BIG_ENDIAN: >)
@type name: String
@param name: Name of this checksum field
'''
# you can't add a checksum for a block currently in the stack.
if block_name in blocks.CURRENT.block_stack:
raise sex.error("CAN N0T ADD A CHECKSUM FOR A BLOCK CURRENTLY IN THE STACK")
checksum = blocks.checksum(block_name, blocks.CURRENT, algorithm, length, endian, name)
blocks.CURRENT.push(checksum)