| """ttLib.tables.ttProgram.py -- Assembler/disassembler for TrueType bytecode programs.""" |
| |
| from __future__ import print_function, division, absolute_import |
| from fontTools.misc.py23 import * |
| from fontTools.misc.textTools import num2binary, binary2num, readHex |
| import array |
| import re |
| import logging |
| |
| |
| log = logging.getLogger(__name__) |
| |
| # first, the list of instructions that eat bytes or words from the instruction stream |
| |
| streamInstructions = [ |
| # |
| # opcode mnemonic argBits descriptive name pops pushes eats from instruction stream pushes |
| # |
| (0x40, 'NPUSHB', 0, 'PushNBytes', 0, -1), # n, b1, b2,...bn b1,b2...bn |
| (0x41, 'NPUSHW', 0, 'PushNWords', 0, -1), # n, w1, w2,...w w1,w2...wn |
| (0xb0, 'PUSHB', 3, 'PushBytes', 0, -1), # b0, b1,..bn b0, b1, ...,bn |
| (0xb8, 'PUSHW', 3, 'PushWords', 0, -1), # w0,w1,..wn w0 ,w1, ...wn |
| ] |
| |
| |
| # next, the list of "normal" instructions |
| |
| instructions = [ |
| # |
| #, opcode mnemonic argBits descriptive name pops pushes eats from instruction stream pushes |
| # |
| (0x7f, 'AA', 0, 'AdjustAngle', 1, 0), # p - |
| (0x64, 'ABS', 0, 'Absolute', 1, 1), # n |n| |
| (0x60, 'ADD', 0, 'Add', 2, 1), # n2, n1 (n1 + n2) |
| (0x27, 'ALIGNPTS', 0, 'AlignPts', 2, 0), # p2, p1 - |
| (0x3c, 'ALIGNRP', 0, 'AlignRelativePt', -1, 0), # p1, p2, ... , ploopvalue - |
| (0x5a, 'AND', 0, 'LogicalAnd', 2, 1), # e2, e1 b |
| (0x2b, 'CALL', 0, 'CallFunction', 1, 0), # f - |
| (0x67, 'CEILING', 0, 'Ceiling', 1, 1), # n ceil(n) |
| (0x25, 'CINDEX', 0, 'CopyXToTopStack', 1, 1), # k ek |
| (0x22, 'CLEAR', 0, 'ClearStack', -1, 0), # all items on the stack - |
| (0x4f, 'DEBUG', 0, 'DebugCall', 1, 0), # n - |
| (0x73, 'DELTAC1', 0, 'DeltaExceptionC1', -1, 0), # argn, cn, argn-1,cn-1, , arg1, c1 - |
| (0x74, 'DELTAC2', 0, 'DeltaExceptionC2', -1, 0), # argn, cn, argn-1,cn-1, , arg1, c1 - |
| (0x75, 'DELTAC3', 0, 'DeltaExceptionC3', -1, 0), # argn, cn, argn-1,cn-1, , arg1, c1 - |
| (0x5d, 'DELTAP1', 0, 'DeltaExceptionP1', -1, 0), # argn, pn, argn-1, pn-1, , arg1, p1 - |
| (0x71, 'DELTAP2', 0, 'DeltaExceptionP2', -1, 0), # argn, pn, argn-1, pn-1, , arg1, p1 - |
| (0x72, 'DELTAP3', 0, 'DeltaExceptionP3', -1, 0), # argn, pn, argn-1, pn-1, , arg1, p1 - |
| (0x24, 'DEPTH', 0, 'GetDepthStack', 0, 1), # - n |
| (0x62, 'DIV', 0, 'Divide', 2, 1), # n2, n1 (n1 * 64)/ n2 |
| (0x20, 'DUP', 0, 'DuplicateTopStack', 1, 2), # e e, e |
| (0x59, 'EIF', 0, 'EndIf', 0, 0), # - - |
| (0x1b, 'ELSE', 0, 'Else', 0, 0), # - - |
| (0x2d, 'ENDF', 0, 'EndFunctionDefinition', 0, 0), # - - |
| (0x54, 'EQ', 0, 'Equal', 2, 1), # e2, e1 b |
| (0x57, 'EVEN', 0, 'Even', 1, 1), # e b |
| (0x2c, 'FDEF', 0, 'FunctionDefinition', 1, 0), # f - |
| (0x4e, 'FLIPOFF', 0, 'SetAutoFlipOff', 0, 0), # - - |
| (0x4d, 'FLIPON', 0, 'SetAutoFlipOn', 0, 0), # - - |
| (0x80, 'FLIPPT', 0, 'FlipPoint', -1, 0), # p1, p2, ..., ploopvalue - |
| (0x82, 'FLIPRGOFF', 0, 'FlipRangeOff', 2, 0), # h, l - |
| (0x81, 'FLIPRGON', 0, 'FlipRangeOn', 2, 0), # h, l - |
| (0x66, 'FLOOR', 0, 'Floor', 1, 1), # n floor(n) |
| (0x46, 'GC', 1, 'GetCoordOnPVector', 1, 1), # p c |
| (0x88, 'GETINFO', 0, 'GetInfo', 1, 1), # selector result |
| (0x91, 'GETVARIATION', 0, 'GetVariation', 0, -1), # - a1,..,an |
| (0x0d, 'GFV', 0, 'GetFVector', 0, 2), # - px, py |
| (0x0c, 'GPV', 0, 'GetPVector', 0, 2), # - px, py |
| (0x52, 'GT', 0, 'GreaterThan', 2, 1), # e2, e1 b |
| (0x53, 'GTEQ', 0, 'GreaterThanOrEqual', 2, 1), # e2, e1 b |
| (0x89, 'IDEF', 0, 'InstructionDefinition', 1, 0), # f - |
| (0x58, 'IF', 0, 'If', 1, 0), # e - |
| (0x8e, 'INSTCTRL', 0, 'SetInstrExecControl', 2, 0), # s, v - |
| (0x39, 'IP', 0, 'InterpolatePts', -1, 0), # p1, p2, ... , ploopvalue - |
| (0x0f, 'ISECT', 0, 'MovePtToIntersect', 5, 0), # a1, a0, b1, b0, p - |
| (0x30, 'IUP', 1, 'InterpolateUntPts', 0, 0), # - - |
| (0x1c, 'JMPR', 0, 'Jump', 1, 0), # offset - |
| (0x79, 'JROF', 0, 'JumpRelativeOnFalse', 2, 0), # e, offset - |
| (0x78, 'JROT', 0, 'JumpRelativeOnTrue', 2, 0), # e, offset - |
| (0x2a, 'LOOPCALL', 0, 'LoopAndCallFunction', 2, 0), # f, count - |
| (0x50, 'LT', 0, 'LessThan', 2, 1), # e2, e1 b |
| (0x51, 'LTEQ', 0, 'LessThenOrEqual', 2, 1), # e2, e1 b |
| (0x8b, 'MAX', 0, 'Maximum', 2, 1), # e2, e1 max(e1, e2) |
| (0x49, 'MD', 1, 'MeasureDistance', 2, 1), # p2,p1 d |
| (0x2e, 'MDAP', 1, 'MoveDirectAbsPt', 1, 0), # p - |
| (0xc0, 'MDRP', 5, 'MoveDirectRelPt', 1, 0), # p - |
| (0x3e, 'MIAP', 1, 'MoveIndirectAbsPt', 2, 0), # n, p - |
| (0x8c, 'MIN', 0, 'Minimum', 2, 1), # e2, e1 min(e1, e2) |
| (0x26, 'MINDEX', 0, 'MoveXToTopStack', 1, 1), # k ek |
| (0xe0, 'MIRP', 5, 'MoveIndirectRelPt', 2, 0), # n, p - |
| (0x4b, 'MPPEM', 0, 'MeasurePixelPerEm', 0, 1), # - ppem |
| (0x4c, 'MPS', 0, 'MeasurePointSize', 0, 1), # - pointSize |
| (0x3a, 'MSIRP', 1, 'MoveStackIndirRelPt', 2, 0), # d, p - |
| (0x63, 'MUL', 0, 'Multiply', 2, 1), # n2, n1 (n1 * n2)/64 |
| (0x65, 'NEG', 0, 'Negate', 1, 1), # n -n |
| (0x55, 'NEQ', 0, 'NotEqual', 2, 1), # e2, e1 b |
| (0x5c, 'NOT', 0, 'LogicalNot', 1, 1), # e ( not e ) |
| (0x6c, 'NROUND', 2, 'NoRound', 1, 1), # n1 n2 |
| (0x56, 'ODD', 0, 'Odd', 1, 1), # e b |
| (0x5b, 'OR', 0, 'LogicalOr', 2, 1), # e2, e1 b |
| (0x21, 'POP', 0, 'PopTopStack', 1, 0), # e - |
| (0x45, 'RCVT', 0, 'ReadCVT', 1, 1), # location value |
| (0x7d, 'RDTG', 0, 'RoundDownToGrid', 0, 0), # - - |
| (0x7a, 'ROFF', 0, 'RoundOff', 0, 0), # - - |
| (0x8a, 'ROLL', 0, 'RollTopThreeStack', 3, 3), # a,b,c b,a,c |
| (0x68, 'ROUND', 2, 'Round', 1, 1), # n1 n2 |
| (0x43, 'RS', 0, 'ReadStore', 1, 1), # n v |
| (0x3d, 'RTDG', 0, 'RoundToDoubleGrid', 0, 0), # - - |
| (0x18, 'RTG', 0, 'RoundToGrid', 0, 0), # - - |
| (0x19, 'RTHG', 0, 'RoundToHalfGrid', 0, 0), # - - |
| (0x7c, 'RUTG', 0, 'RoundUpToGrid', 0, 0), # - - |
| (0x77, 'S45ROUND', 0, 'SuperRound45Degrees', 1, 0), # n - |
| (0x7e, 'SANGW', 0, 'SetAngleWeight', 1, 0), # weight - |
| (0x85, 'SCANCTRL', 0, 'ScanConversionControl', 1, 0), # n - |
| (0x8d, 'SCANTYPE', 0, 'ScanType', 1, 0), # n - |
| (0x48, 'SCFS', 0, 'SetCoordFromStackFP', 2, 0), # c, p - |
| (0x1d, 'SCVTCI', 0, 'SetCVTCutIn', 1, 0), # n - |
| (0x5e, 'SDB', 0, 'SetDeltaBaseInGState', 1, 0), # n - |
| (0x86, 'SDPVTL', 1, 'SetDualPVectorToLine', 2, 0), # p2, p1 - |
| (0x5f, 'SDS', 0, 'SetDeltaShiftInGState',1, 0), # n - |
| (0x0b, 'SFVFS', 0, 'SetFVectorFromStack', 2, 0), # y, x - |
| (0x04, 'SFVTCA', 1, 'SetFVectorToAxis', 0, 0), # - - |
| (0x08, 'SFVTL', 1, 'SetFVectorToLine', 2, 0), # p2, p1 - |
| (0x0e, 'SFVTPV', 0, 'SetFVectorToPVector', 0, 0), # - - |
| (0x34, 'SHC', 1, 'ShiftContourByLastPt', 1, 0), # c - |
| (0x32, 'SHP', 1, 'ShiftPointByLastPoint',-1, 0), # p1, p2, ..., ploopvalue - |
| (0x38, 'SHPIX', 0, 'ShiftZoneByPixel', -1, 0), # d, p1, p2, ..., ploopvalue - |
| (0x36, 'SHZ', 1, 'ShiftZoneByLastPoint', 1, 0), # e - |
| (0x17, 'SLOOP', 0, 'SetLoopVariable', 1, 0), # n - |
| (0x1a, 'SMD', 0, 'SetMinimumDistance', 1, 0), # distance - |
| (0x0a, 'SPVFS', 0, 'SetPVectorFromStack', 2, 0), # y, x - |
| (0x02, 'SPVTCA', 1, 'SetPVectorToAxis', 0, 0), # - - |
| (0x06, 'SPVTL', 1, 'SetPVectorToLine', 2, 0), # p2, p1 - |
| (0x76, 'SROUND', 0, 'SuperRound', 1, 0), # n - |
| (0x10, 'SRP0', 0, 'SetRefPoint0', 1, 0), # p - |
| (0x11, 'SRP1', 0, 'SetRefPoint1', 1, 0), # p - |
| (0x12, 'SRP2', 0, 'SetRefPoint2', 1, 0), # p - |
| (0x1f, 'SSW', 0, 'SetSingleWidth', 1, 0), # n - |
| (0x1e, 'SSWCI', 0, 'SetSingleWidthCutIn', 1, 0), # n - |
| (0x61, 'SUB', 0, 'Subtract', 2, 1), # n2, n1 (n1 - n2) |
| (0x00, 'SVTCA', 1, 'SetFPVectorToAxis', 0, 0), # - - |
| (0x23, 'SWAP', 0, 'SwapTopStack', 2, 2), # e2, e1 e1, e2 |
| (0x13, 'SZP0', 0, 'SetZonePointer0', 1, 0), # n - |
| (0x14, 'SZP1', 0, 'SetZonePointer1', 1, 0), # n - |
| (0x15, 'SZP2', 0, 'SetZonePointer2', 1, 0), # n - |
| (0x16, 'SZPS', 0, 'SetZonePointerS', 1, 0), # n - |
| (0x29, 'UTP', 0, 'UnTouchPt', 1, 0), # p - |
| (0x70, 'WCVTF', 0, 'WriteCVTInFUnits', 2, 0), # n, l - |
| (0x44, 'WCVTP', 0, 'WriteCVTInPixels', 2, 0), # v, l - |
| (0x42, 'WS', 0, 'WriteStore', 2, 0), # v, l - |
| ] |
| |
| |
| def bitRepr(value, bits): |
| s = "" |
| for i in range(bits): |
| s = "01"[value & 0x1] + s |
| value = value >> 1 |
| return s |
| |
| |
| _mnemonicPat = re.compile(r"[A-Z][A-Z0-9]*$") |
| |
| def _makeDict(instructionList): |
| opcodeDict = {} |
| mnemonicDict = {} |
| for op, mnemonic, argBits, name, pops, pushes in instructionList: |
| assert _mnemonicPat.match(mnemonic) |
| mnemonicDict[mnemonic] = op, argBits, name |
| if argBits: |
| argoffset = op |
| for i in range(1 << argBits): |
| opcodeDict[op+i] = mnemonic, argBits, argoffset, name |
| else: |
| opcodeDict[op] = mnemonic, 0, 0, name |
| return opcodeDict, mnemonicDict |
| |
| streamOpcodeDict, streamMnemonicDict = _makeDict(streamInstructions) |
| opcodeDict, mnemonicDict = _makeDict(instructions) |
| |
| class tt_instructions_error(Exception): |
| def __init__(self, error): |
| self.error = error |
| def __str__(self): |
| return "TT instructions error: %s" % repr(self.error) |
| |
| |
| _comment = r"/\*.*?\*/" |
| _instruction = r"([A-Z][A-Z0-9]*)\s*\[(.*?)\]" |
| _number = r"-?[0-9]+" |
| _token = "(%s)|(%s)|(%s)" % (_instruction, _number, _comment) |
| |
| _tokenRE = re.compile(_token) |
| _whiteRE = re.compile(r"\s*") |
| |
| _pushCountPat = re.compile(r"[A-Z][A-Z0-9]*\s*\[.*?\]\s*/\* ([0-9]+).*?\*/") |
| |
| _indentRE = re.compile(r"^FDEF|IF|ELSE\[ \]\t.+") |
| _unindentRE = re.compile(r"^ELSE|ENDF|EIF\[ \]\t.+") |
| |
| def _skipWhite(data, pos): |
| m = _whiteRE.match(data, pos) |
| newPos = m.regs[0][1] |
| assert newPos >= pos |
| return newPos |
| |
| |
| class Program(object): |
| |
| def __init__(self): |
| pass |
| |
| def fromBytecode(self, bytecode): |
| self.bytecode = array.array("B", bytecode) |
| if hasattr(self, "assembly"): |
| del self.assembly |
| |
| def fromAssembly(self, assembly): |
| self.assembly = assembly |
| if hasattr(self, "bytecode"): |
| del self.bytecode |
| |
| def getBytecode(self): |
| if not hasattr(self, "bytecode"): |
| self._assemble() |
| return self.bytecode.tostring() |
| |
| def getAssembly(self, preserve=True): |
| if not hasattr(self, "assembly"): |
| self._disassemble(preserve=preserve) |
| return self.assembly |
| |
| def toXML(self, writer, ttFont): |
| if not hasattr (ttFont, "disassembleInstructions") or ttFont.disassembleInstructions: |
| try: |
| assembly = self.getAssembly() |
| except: |
| import traceback |
| tmp = StringIO() |
| traceback.print_exc(file=tmp) |
| msg = "An exception occurred during the decompilation of glyph program:\n\n" |
| msg += tmp.getvalue() |
| log.error(msg) |
| writer.begintag("bytecode") |
| writer.newline() |
| writer.comment(msg.strip()) |
| writer.newline() |
| writer.dumphex(self.getBytecode()) |
| writer.endtag("bytecode") |
| writer.newline() |
| else: |
| if not assembly: |
| return |
| writer.begintag("assembly") |
| writer.newline() |
| i = 0 |
| indent = 0 |
| nInstr = len(assembly) |
| while i < nInstr: |
| instr = assembly[i] |
| if _unindentRE.match(instr): |
| indent -= 1 |
| writer.write(writer.indentwhite * indent) |
| writer.write(instr) |
| writer.newline() |
| m = _pushCountPat.match(instr) |
| i = i + 1 |
| if m: |
| nValues = int(m.group(1)) |
| line = [] |
| j = 0 |
| for j in range(nValues): |
| if j and not (j % 25): |
| writer.write(writer.indentwhite * indent) |
| writer.write(' '.join(line)) |
| writer.newline() |
| line = [] |
| line.append(assembly[i+j]) |
| writer.write(writer.indentwhite * indent) |
| writer.write(' '.join(line)) |
| writer.newline() |
| i = i + j + 1 |
| if _indentRE.match(instr): |
| indent += 1 |
| writer.endtag("assembly") |
| writer.newline() |
| else: |
| bytecode = self.getBytecode() |
| if not bytecode: |
| return |
| writer.begintag("bytecode") |
| writer.newline() |
| writer.dumphex(bytecode) |
| writer.endtag("bytecode") |
| writer.newline() |
| |
| def fromXML(self, name, attrs, content, ttFont): |
| if name == "assembly": |
| self.fromAssembly(strjoin(content)) |
| self._assemble() |
| del self.assembly |
| else: |
| assert name == "bytecode" |
| self.fromBytecode(readHex(content)) |
| |
| def _assemble(self): |
| assembly = getattr(self, 'assembly', []) |
| if isinstance(assembly, type([])): |
| assembly = ' '.join(assembly) |
| bytecode = [] |
| push = bytecode.append |
| lenAssembly = len(assembly) |
| pos = _skipWhite(assembly, 0) |
| while pos < lenAssembly: |
| m = _tokenRE.match(assembly, pos) |
| if m is None: |
| raise tt_instructions_error("Syntax error in TT program (%s)" % assembly[pos-5:pos+15]) |
| dummy, mnemonic, arg, number, comment = m.groups() |
| pos = m.regs[0][1] |
| if comment: |
| pos = _skipWhite(assembly, pos) |
| continue |
| |
| arg = arg.strip() |
| if mnemonic.startswith("INSTR"): |
| # Unknown instruction |
| op = int(mnemonic[5:]) |
| push(op) |
| elif mnemonic not in ("PUSH", "NPUSHB", "NPUSHW", "PUSHB", "PUSHW"): |
| op, argBits, name = mnemonicDict[mnemonic] |
| if len(arg) != argBits: |
| raise tt_instructions_error("Incorrect number of argument bits (%s[%s])" % (mnemonic, arg)) |
| if arg: |
| arg = binary2num(arg) |
| push(op + arg) |
| else: |
| push(op) |
| else: |
| args = [] |
| pos = _skipWhite(assembly, pos) |
| while pos < lenAssembly: |
| m = _tokenRE.match(assembly, pos) |
| if m is None: |
| raise tt_instructions_error("Syntax error in TT program (%s)" % assembly[pos:pos+15]) |
| dummy, _mnemonic, arg, number, comment = m.groups() |
| if number is None and comment is None: |
| break |
| pos = m.regs[0][1] |
| pos = _skipWhite(assembly, pos) |
| if comment is not None: |
| continue |
| args.append(int(number)) |
| nArgs = len(args) |
| if mnemonic == "PUSH": |
| # Automatically choose the most compact representation |
| nWords = 0 |
| while nArgs: |
| while nWords < nArgs and nWords < 255 and not (0 <= args[nWords] <= 255): |
| nWords += 1 |
| nBytes = 0 |
| while nWords+nBytes < nArgs and nBytes < 255 and 0 <= args[nWords+nBytes] <= 255: |
| nBytes += 1 |
| if nBytes < 2 and nWords + nBytes < 255 and nWords + nBytes != nArgs: |
| # Will write bytes as words |
| nWords += nBytes |
| continue |
| |
| # Write words |
| if nWords: |
| if nWords <= 8: |
| op, argBits, name = streamMnemonicDict["PUSHW"] |
| op = op + nWords - 1 |
| push(op) |
| else: |
| op, argBits, name = streamMnemonicDict["NPUSHW"] |
| push(op) |
| push(nWords) |
| for value in args[:nWords]: |
| assert -32768 <= value < 32768, "PUSH value out of range %d" % value |
| push((value >> 8) & 0xff) |
| push(value & 0xff) |
| |
| # Write bytes |
| if nBytes: |
| pass |
| if nBytes <= 8: |
| op, argBits, name = streamMnemonicDict["PUSHB"] |
| op = op + nBytes - 1 |
| push(op) |
| else: |
| op, argBits, name = streamMnemonicDict["NPUSHB"] |
| push(op) |
| push(nBytes) |
| for value in args[nWords:nWords+nBytes]: |
| push(value) |
| |
| nTotal = nWords + nBytes |
| args = args[nTotal:] |
| nArgs -= nTotal |
| nWords = 0 |
| else: |
| # Write exactly what we've been asked to |
| words = mnemonic[-1] == "W" |
| op, argBits, name = streamMnemonicDict[mnemonic] |
| if mnemonic[0] != "N": |
| assert nArgs <= 8, nArgs |
| op = op + nArgs - 1 |
| push(op) |
| else: |
| assert nArgs < 256 |
| push(op) |
| push(nArgs) |
| if words: |
| for value in args: |
| assert -32768 <= value < 32768, "PUSHW value out of range %d" % value |
| push((value >> 8) & 0xff) |
| push(value & 0xff) |
| else: |
| for value in args: |
| assert 0 <= value < 256, "PUSHB value out of range %d" % value |
| push(value) |
| |
| pos = _skipWhite(assembly, pos) |
| |
| if bytecode: |
| assert max(bytecode) < 256 and min(bytecode) >= 0 |
| self.bytecode = array.array("B", bytecode) |
| |
| def _disassemble(self, preserve=False): |
| assembly = [] |
| i = 0 |
| bytecode = getattr(self, 'bytecode', []) |
| numBytecode = len(bytecode) |
| while i < numBytecode: |
| op = bytecode[i] |
| try: |
| mnemonic, argBits, argoffset, name = opcodeDict[op] |
| except KeyError: |
| if op in streamOpcodeDict: |
| values = [] |
| |
| # Merge consecutive PUSH operations |
| while bytecode[i] in streamOpcodeDict: |
| op = bytecode[i] |
| mnemonic, argBits, argoffset, name = streamOpcodeDict[op] |
| words = mnemonic[-1] == "W" |
| if argBits: |
| nValues = op - argoffset + 1 |
| else: |
| i = i + 1 |
| nValues = bytecode[i] |
| i = i + 1 |
| assert nValues > 0 |
| if not words: |
| for j in range(nValues): |
| value = bytecode[i] |
| values.append(repr(value)) |
| i = i + 1 |
| else: |
| for j in range(nValues): |
| # cast to signed int16 |
| value = (bytecode[i] << 8) | bytecode[i+1] |
| if value >= 0x8000: |
| value = value - 0x10000 |
| values.append(repr(value)) |
| i = i + 2 |
| if preserve: |
| break |
| |
| if not preserve: |
| mnemonic = "PUSH" |
| nValues = len(values) |
| if nValues == 1: |
| assembly.append("%s[ ] /* 1 value pushed */" % mnemonic) |
| else: |
| assembly.append("%s[ ] /* %s values pushed */" % (mnemonic, nValues)) |
| assembly.extend(values) |
| else: |
| assembly.append("INSTR%d[ ]" % op) |
| i = i + 1 |
| else: |
| if argBits: |
| assembly.append(mnemonic + "[%s] /* %s */" % (num2binary(op - argoffset, argBits), name)) |
| else: |
| assembly.append(mnemonic + "[ ] /* %s */" % name) |
| i = i + 1 |
| self.assembly = assembly |
| |
| def __bool__(self): |
| """ |
| >>> p = Program() |
| >>> bool(p) |
| False |
| >>> bc = array.array("B", [0]) |
| >>> p.fromBytecode(bc) |
| >>> bool(p) |
| True |
| >>> p.bytecode.pop() |
| 0 |
| >>> bool(p) |
| False |
| |
| >>> p = Program() |
| >>> asm = ['SVTCA[0]'] |
| >>> p.fromAssembly(asm) |
| >>> bool(p) |
| True |
| >>> p.assembly.pop() |
| 'SVTCA[0]' |
| >>> bool(p) |
| False |
| """ |
| return ((hasattr(self, 'assembly') and len(self.assembly) > 0) or |
| (hasattr(self, 'bytecode') and len(self.bytecode) > 0)) |
| |
| __nonzero__ = __bool__ |
| |
| def __eq__(self, other): |
| if type(self) != type(other): |
| return NotImplemented |
| return self.__dict__ == other.__dict__ |
| |
| def __ne__(self, other): |
| result = self.__eq__(other) |
| return result if result is NotImplemented else not result |
| |
| |
| def _test(): |
| """ |
| >>> _test() |
| True |
| """ |
| |
| bc = b"""@;:9876543210/.-,+*)(\'&%$#"! \037\036\035\034\033\032\031\030\027\026\025\024\023\022\021\020\017\016\015\014\013\012\011\010\007\006\005\004\003\002\001\000,\001\260\030CXEj\260\031C`\260F#D#\020 \260FN\360M/\260\000\022\033!#\0213Y-,\001\260\030CX\260\005+\260\000\023K\260\024PX\261\000@8Y\260\006+\033!#\0213Y-,\001\260\030CXN\260\003%\020\362!\260\000\022M\033 E\260\004%\260\004%#Jad\260(RX!#\020\326\033\260\003%\020\362!\260\000\022YY-,\260\032CX!!\033\260\002%\260\002%I\260\003%\260\003%Ja d\260\020PX!!!\033\260\003%\260\003%I\260\000PX\260\000PX\270\377\3428!\033\260\0208!Y\033\260\000RX\260\0368!\033\270\377\3608!YYYY-,\001\260\030CX\260\005+\260\000\023K\260\024PX\271\000\000\377\3008Y\260\006+\033!#\0213Y-,N\001\212\020\261F\031CD\260\000\024\261\000F\342\260\000\025\271\000\000\377\3608\000\260\000<\260(+\260\002%\020\260\000<-,\001\030\260\000/\260\001\024\362\260\001\023\260\001\025M\260\000\022-,\001\260\030CX\260\005+\260\000\023\271\000\000\377\3408\260\006+\033!#\0213Y-,\001\260\030CXEdj#Edi\260\031Cd``\260F#D#\020 \260F\360/\260\000\022\033!! \212 \212RX\0213\033!!YY-,\001\261\013\012C#Ce\012-,\000\261\012\013C#C\013-,\000\260F#p\261\001F>\001\260F#p\261\002FE:\261\002\000\010\015-,\260\022+\260\002%E\260\002%Ej\260@\213`\260\002%#D!!!-,\260\023+\260\002%E\260\002%Ej\270\377\300\214`\260\002%#D!!!-,\260\000\260\022+!!!-,\260\000\260\023+!!!-,\001\260\006C\260\007Ce\012-, i\260@a\260\000\213 \261,\300\212\214\270\020\000b`+\014d#da\\X\260\003aY-,\261\000\003%EhT\260\034KPZX\260\003%E\260\003%E`h \260\004%#D\260\004%#D\033\260\003% Eh \212#D\260\003%Eh`\260\003%#DY-,\260\003% Eh \212#D\260\003%Edhe`\260\004%\260\001`#D-,\260\011CX\207!\300\033\260\022CX\207E\260\021+\260G#D\260Gz\344\033\003\212E\030i \260G#D\212\212\207 \260\240QX\260\021+\260G#D\260Gz\344\033!\260Gz\344YYY\030-, \212E#Eh`D-,EjB-,\001\030/-,\001\260\030CX\260\004%\260\004%Id#Edi\260@\213a \260\200bj\260\002%\260\002%a\214\260\031C`\260F#D!\212\020\260F\366!\033!!!!Y-,\001\260\030CX\260\002%E\260\002%Ed`j\260\003%Eja \260\004%Ej \212\213e\260\004%#D\214\260\003%#D!!\033 EjD EjDY-,\001 E\260\000U\260\030CZXEh#Ei\260@\213a \260\200bj \212#a \260\003%\213e\260\004%#D\214\260\003%#D!!\033!!\260\031+Y-,\001\212\212Ed#EdadB-,\260\004%\260\004%\260\031+\260\030CX\260\004%\260\004%\260\003%\260\033+\001\260\002%C\260@T\260\002%C\260\000TZX\260\003% E\260@aDY\260\002%C\260\000T\260\002%C\260@TZX\260\004% E\260@`DYY!!!!-,\001KRXC\260\002%E#aD\033!!Y-,\001KRXC\260\002%E#`D\033!!Y-,KRXED\033!!Y-,\001 \260\003%#I\260@`\260 c \260\000RX#\260\002%8#\260\002%e8\000\212c8\033!!!!!Y\001-,KPXED\033!!Y-,\001\260\005%\020# \212\365\000\260\001`#\355\354-,\001\260\005%\020# \212\365\000\260\001a#\355\354-,\001\260\006%\020\365\000\355\354-,F#F`\212\212F# F\212`\212a\270\377\200b# \020#\212\261KK\212pE` \260\000PX\260\001a\270\377\272\213\033\260F\214Y\260\020`h\001:-, E\260\003%FRX\260\002%F ha\260\003%\260\003%?#!8\033!\021Y-, E\260\003%FPX\260\002%F ha\260\003%\260\003%?#!8\033!\021Y-,\000\260\007C\260\006C\013-,\212\020\354-,\260\014CX!\033 F\260\000RX\270\377\3608\033\260\0208YY-, \260\000UX\270\020\000c\260\003%Ed\260\003%Eda\260\000SX\260\002\033\260@a\260\003Y%EiSXED\033!!Y\033!\260\002%E\260\002%Ead\260(QXED\033!!YY-,!!\014d#d\213\270@\000b-,!\260\200QX\014d#d\213\270 \000b\033\262\000@/+Y\260\002`-,!\260\300QX\014d#d\213\270\025Ub\033\262\000\200/+Y\260\002`-,\014d#d\213\270@\000b`#!-,KSX\260\004%\260\004%Id#Edi\260@\213a \260\200bj\260\002%\260\002%a\214\260F#D!\212\020\260F\366!\033!\212\021#\022 9/Y-,\260\002%\260\002%Id\260\300TX\270\377\3708\260\0108\033!!Y-,\260\023CX\003\033\002Y-,\260\023CX\002\033\003Y-,\260\012+#\020 <\260\027+-,\260\002%\270\377\3608\260(+\212\020# \320#\260\020+\260\005CX\300\033<Y \020\021\260\000\022\001-,KS#KQZX8\033!!Y-,\001\260\002%\020\320#\311\001\260\001\023\260\000\024\020\260\001<\260\001\026-,\001\260\000\023\260\001\260\003%I\260\003\0278\260\001\023-,KS#KQZX E\212`D\033!!Y-, 9/-""" |
| |
| p = Program() |
| p.fromBytecode(bc) |
| asm = p.getAssembly(preserve=True) |
| p.fromAssembly(asm) |
| print(bc == p.getBytecode()) |
| |
| if __name__ == "__main__": |
| import sys |
| import doctest |
| sys.exit(doctest.testmod().failed) |
