1# Python bindings for Yasm: Pyrex input file for value.h
2#
3#  Copyright (C) 2006  Michael Urman, Peter Johnson
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
15# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
18# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24# POSSIBILITY OF SUCH DAMAGE.
25
26cdef class Value:
27    cdef yasm_value value
28    def __cinit__(self, value=None, size=None):
29        cdef unsigned int sz
30        if size is None:
31            sz = 0
32        else:
33            sz = size;
34
35        yasm_value_initialize(&self.value, NULL, sz)
36        if value is None:
37            pass
38        elif isinstance(value, Expression):
39            yasm_value_initialize(&self.value,
40                                  yasm_expr_copy((<Expression>value).expr), sz)
41        elif isinstance(value, Symbol):
42            yasm_value_init_sym(&self.value, (<Symbol>value).sym, sz)
43        else:
44            raise TypeError("Invalid value type '%s'" % type(value))
45
46    def __dealloc__(self):
47        yasm_value_delete(&self.value)
48
49    def finalize(self, precbc=None):
50        if precbc is None:
51            return yasm_value_finalize(&self.value, NULL)
52        elif isinstance(precbc, Bytecode):
53            return yasm_value_finalize(&self.value, (<Bytecode>precbc).bc)
54        else:
55            raise TypeError("Invalid precbc type '%s'" % type(precbc))
56
57