1# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
2# Copyright (c) 2009 The Hewlett-Packard Development Company
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;

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25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28from slicc.symbols.Symbol import Symbol
29from slicc.symbols.Type import Type
30
31class Func(Symbol):
32 def __init__(self, table, ident, name, location, return_type, param_types,
33 proto_param_strings, body_param_strings, body,
34 pairs, default_count = 0):
35 super(Func, self).__init__(table, ident, location, pairs)
36 self.return_type = return_type
37 self.param_types = param_types
38 self.proto_param_strings = proto_param_strings
39 self.body_param_strings = body_param_strings
40 self.body = body
41 self.isInternalMachineFunc = False
42 self.c_ident = ident
43 self.c_name = name
44 self.class_name = ""
45 self.default_count = default_count
46
47 def __repr__(self):
48 return ""
49
50 @property
51 def prototype(self):
52 if "external" in self:
53 return ""
54
55 return_type = self.return_type.c_ident
56 void_type = self.symtab.find("void", Type)
57 if "return_by_ref" in self and self.return_type != void_type:
58 return_type += "&"
59 elif "return_by_pointer" in self and self.return_type != void_type:
60 return_type += "*"
61
62 return "%s %s(%s);" % (return_type, self.c_name,
63 ", ".join(self.proto_param_strings))
64
65 def writeCodeFiles(self, path, includes):
66 return
67
68 def checkArguments(self, args):
69 if len(args) + self.default_count < len(self.param_types) or \
70 len(args) > len(self.param_types):
71 self.error("Wrong number of arguments passed to function: '%s'" + \
72 " Expected at least: %d, got: %d", self.c_ident,
73 len(self.param_types) - self.default_count, len(args))
74
75 cvec = []
76 type_vec = []
77 for expr,expected_type in zip(args, self.param_types):
78 # Check the types of the parameter
79 actual_type,param_code = expr.inline(True)
80 if str(actual_type) != 'OOD' and \
81 str(actual_type) != str(expected_type) and \
82 str(actual_type["interface"]) != str(expected_type):
83 expr.error("Type mismatch: expected: %s actual: %s" % \
84 (expected_type, actual_type))
85 cvec.append(param_code)
86 type_vec.append(expected_type)
87
88 return cvec, type_vec
89
90 def generateCode(self):
91 '''This write a function of object Chip'''
92 if "external" in self:
93 return ""
94
95 code = self.symtab.codeFormatter()
96
97 # Generate function header
98 return_type = self.return_type.c_ident
99 void_type = self.symtab.find("void", Type)
100 if "return_by_ref" in self and self.return_type != void_type:
101 return_type += "&"
102 if "return_by_pointer" in self and self.return_type != void_type:
103 return_type += "*"
104
105 params = ', '.join(self.body_param_strings)
106
107 code('''
108$return_type
109${{self.class_name}}::${{self.c_name}}($params)
110{
111${{self.body}}
112}
113''')
114 return str(code)
115
116__all__ = [ "Func" ]