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170 lines
6.9 KiB
170 lines
6.9 KiB
# Python bindings for Yasm: Pyrex input file for intnum.h |
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# |
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# Copyright (C) 2006 Michael Urman, Peter Johnson |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions |
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# are met: |
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# 1. Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# 2. Redistributions in binary form must reproduce the above copyright |
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# notice, this list of conditions and the following disclaimer in the |
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# documentation and/or other materials provided with the distribution. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' |
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE |
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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# POSSIBILITY OF SUCH DAMAGE. |
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cdef class IntNum |
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cdef object __intnum_op_ex(object x, yasm_expr_op op, object y): |
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value = __intnum_op(x, op, y) |
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__error_check() |
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return value |
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cdef object __intnum_op(object x, yasm_expr_op op, object y): |
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if isinstance(x, IntNum): |
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result = IntNum(x) |
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if y is None: |
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yasm_intnum_calc((<IntNum>result).intn, op, NULL) |
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else: |
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# Coerce to intnum if not already |
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if isinstance(y, IntNum): |
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rhs = y |
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else: |
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rhs = IntNum(y) |
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yasm_intnum_calc((<IntNum>result).intn, op, (<IntNum>rhs).intn) |
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return result |
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elif isinstance(y, IntNum): |
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# Reversed operation - x OP y still, just y is intnum, x isn't. |
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result = IntNum(x) |
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yasm_intnum_calc((<IntNum>result).intn, op, (<IntNum>y).intn) |
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return result |
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else: |
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raise NotImplementedError |
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cdef object __make_intnum(yasm_intnum *intn): |
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return IntNum(__pass_voidp(intn, IntNum)) |
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cdef class IntNum: |
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cdef yasm_intnum *intn |
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def __cinit__(self, value, base=None): |
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cdef unsigned char buf[16] |
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self.intn = NULL |
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if isinstance(value, IntNum): |
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self.intn = yasm_intnum_copy((<IntNum>value).intn) |
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return |
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if PyCObject_Check(value): |
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self.intn = <yasm_intnum *>__get_voidp(value, IntNum) |
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return |
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if isinstance(value, str): |
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if base == 2: |
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self.intn = yasm_intnum_create_bin(value) |
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elif base == 8: |
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self.intn = yasm_intnum_create_oct(value) |
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elif base == 10 or base is None: |
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self.intn = yasm_intnum_create_dec(value) |
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elif base == 16: |
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self.intn = yasm_intnum_create_hex(value) |
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elif base == "nasm": |
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self.intn = yasm_intnum_create_charconst_nasm(value) |
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else: |
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raise ValueError("base must be 2, 8, 10, 16, or \"nasm\"") |
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elif isinstance(value, (int, long)): |
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_PyLong_AsByteArray(long(value), buf, 16, 1, 1) |
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self.intn = yasm_intnum_create_sized(buf, 1, 16, 0) |
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else: |
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raise ValueError |
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def __dealloc__(self): |
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if self.intn != NULL: yasm_intnum_destroy(self.intn) |
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def __long__(self): |
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cdef unsigned char buf[16] |
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yasm_intnum_get_sized(self.intn, buf, 16, 128, 0, 0, 0) |
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return _PyLong_FromByteArray(buf, 16, 1, 1) |
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def __repr__(self): |
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return "IntNum(%d)" % self |
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def __int__(self): return int(self.__long__()) |
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def __complex__(self): return complex(self.__long__()) |
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def __float__(self): return float(self.__long__()) |
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def __oct__(self): return oct(int(self.__long__())) |
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def __hex__(self): return hex(int(self.__long__())) |
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def __add__(x, y): return __intnum_op(x, YASM_EXPR_ADD, y) |
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def __sub__(x, y): return __intnum_op(x, YASM_EXPR_SUB, y) |
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def __mul__(x, y): return __intnum_op(x, YASM_EXPR_MUL, y) |
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def __div__(x, y): return __intnum_op_ex(x, YASM_EXPR_SIGNDIV, y) |
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def __floordiv__(x, y): return __intnum_op_ex(x, YASM_EXPR_SIGNDIV, y) |
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def __mod__(x, y): return __intnum_op_ex(x, YASM_EXPR_SIGNMOD, y) |
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def __neg__(self): return __intnum_op(self, YASM_EXPR_NEG, None) |
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def __pos__(self): return self |
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def __abs__(self): |
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if yasm_intnum_sign(self.intn) >= 0: return IntNum(self) |
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else: return __intnum_op(self, YASM_EXPR_NEG, None) |
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def __nonzero__(self): return not yasm_intnum_is_zero(self.intn) |
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def __invert__(self): return __intnum_op(self, YASM_EXPR_NOT, None) |
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def __lshift__(x, y): return __intnum_op(x, YASM_EXPR_SHL, y) |
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def __rshift__(x, y): return __intnum_op(x, YASM_EXPR_SHR, y) |
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def __and__(x, y): return __intnum_op(x, YASM_EXPR_AND, y) |
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def __or__(x, y): return __intnum_op(x, YASM_EXPR_OR, y) |
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def __xor__(x, y): return __intnum_op(x, YASM_EXPR_XOR, y) |
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cdef object __op(self, yasm_expr_op op, object x): |
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if isinstance(x, IntNum): |
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rhs = x |
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else: |
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rhs = IntNum(x) |
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yasm_intnum_calc(self.intn, op, (<IntNum>rhs).intn) |
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return self |
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def __iadd__(self, x): return self.__op(YASM_EXPR_ADD, x) |
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def __isub__(self, x): return self.__op(YASM_EXPR_SUB, x) |
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def __imul__(self, x): return self.__op(YASM_EXPR_MUL, x) |
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def __idiv__(self, x): return self.__op(YASM_EXPR_SIGNDIV, x) |
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def __ifloordiv__(self, x): return self.__op(YASM_EXPR_SIGNDIV, x) |
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def __imod__(self, x): return self.__op(YASM_EXPR_MOD, x) |
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def __ilshift__(self, x): return self.__op(YASM_EXPR_SHL, x) |
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def __irshift__(self, x): return self.__op(YASM_EXPR_SHR, x) |
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def __iand__(self, x): return self.__op(YASM_EXPR_AND, x) |
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def __ior__(self, x): return self.__op(YASM_EXPR_OR, x) |
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def __ixor__(self, x): return self.__op(YASM_EXPR_XOR, x) |
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def __cmp__(self, x): |
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cdef yasm_intnum *t |
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t = yasm_intnum_copy(self.intn) |
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if isinstance(x, IntNum): |
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rhs = x |
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else: |
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rhs = IntNum(x) |
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yasm_intnum_calc(t, YASM_EXPR_SUB, (<IntNum>rhs).intn) |
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result = yasm_intnum_sign(t) |
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yasm_intnum_destroy(t) |
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return result |
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def __richcmp__(x, y, op): |
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cdef yasm_expr_op aop |
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if op == 0: aop = YASM_EXPR_LT |
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elif op == 1: aop = YASM_EXPR_LE |
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elif op == 2: aop = YASM_EXPR_EQ |
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elif op == 3: aop = YASM_EXPR_NE |
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elif op == 4: aop = YASM_EXPR_GT |
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elif op == 5: aop = YASM_EXPR_GE |
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else: raise NotImplementedError |
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v = __intnum_op(x, aop, y) |
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return bool(not yasm_intnum_is_zero((<IntNum>v).intn))
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