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1 | (* |
2 | * Copyright 2010, INRIA, University of Copenhagen | |
3 | * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix | |
4 | * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen | |
5 | * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix | |
6 | * This file is part of Coccinelle. | |
7 | * | |
8 | * Coccinelle is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, according to version 2 of the License. | |
11 | * | |
12 | * Coccinelle is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with Coccinelle. If not, see <http://www.gnu.org/licenses/>. | |
19 | * | |
20 | * The authors reserve the right to distribute this or future versions of | |
21 | * Coccinelle under other licenses. | |
22 | *) | |
23 | ||
24 | ||
34e49164 C |
25 | (* for metavariables in general, but here because needed for metatypes *) |
26 | type inherited = bool (* true if inherited *) | |
27 | type keep_binding = Unitary (* need no info *) | |
28 | | Nonunitary (* need an env entry *) | Saved (* need a witness *) | |
29 | ||
e6509c05 C |
30 | type meta_name = string * string (*Ast_cocci.meta_name*) |
31 | ||
faf9a90c | 32 | type typeC = |
34e49164 | 33 | ConstVol of const_vol * typeC |
faf9a90c C |
34 | | BaseType of baseType |
35 | | SignedT of sign * typeC option | |
34e49164 C |
36 | | Pointer of typeC |
37 | | FunctionPointer of typeC (* only return type *) | |
38 | | Array of typeC (* drop size info *) | |
e6509c05 C |
39 | | EnumName of name |
40 | | StructUnionName of structUnion * name | |
34e49164 | 41 | | TypeName of string |
e6509c05 | 42 | | MetaType of meta_name * keep_binding * inherited |
34e49164 C |
43 | | Unknown (* for metavariables of type expression *^* *) |
44 | ||
e6509c05 C |
45 | and name = |
46 | NoName | |
47 | | Name of string | |
48 | | MV of meta_name * keep_binding * inherited | |
49 | ||
34e49164 | 50 | and tagged_string = string |
faf9a90c | 51 | |
34e49164 | 52 | and baseType = VoidType | CharType | ShortType | IntType | DoubleType |
faf9a90c | 53 | | FloatType | LongType | LongLongType | BoolType |
1eddfd50 | 54 | | SizeType | SSizeType | PtrDiffType |
34e49164 C |
55 | |
56 | and structUnion = Struct | Union | |
57 | ||
58 | and sign = Signed | Unsigned | |
59 | ||
60 | and const_vol = Const | Volatile | |
61 | ||
62 | (* --------------------------------------------------------------------- *) | |
63 | (* Printer *) | |
faf9a90c C |
64 | open Format |
65 | ||
66 | let rec type2c = function | |
67 | ConstVol(cv,ty) -> (const_vol cv) ^ (type2c ty) | |
68 | | BaseType(ty) -> baseType ty | |
69 | | SignedT(sgn,None) -> sign sgn | |
70 | | SignedT(sgn,Some ty) -> (sign sgn) ^ (type2c ty) | |
71 | | Pointer(ty) -> (type2c ty) ^ "*" | |
72 | | FunctionPointer(ty) -> (type2c ty) ^ "(*)(...)" | |
73 | | Array(ty) -> (type2c ty) ^ "[] " | |
e6509c05 C |
74 | | EnumName(name) -> "enum " ^ (print_name name) |
75 | | StructUnionName(kind,name) -> (structUnion kind) ^ (print_name name) | |
faf9a90c C |
76 | | TypeName(name) -> name ^ " " |
77 | | MetaType((rule,name),keep,inherited) -> name ^ " " | |
34e49164 C |
78 | (* |
79 | let print_unitary = function | |
80 | Unitary -> print_string "unitary" | |
81 | | Nonunitary -> print_string "nonunitary" | |
82 | | Saved -> print_string "saved" in | |
83 | print_string "/* "; | |
84 | print_string "keep:"; print_unitary keep; | |
85 | print_string " inherited:"; print_bool inherited; | |
86 | print_string " */" | |
87 | *) | |
faf9a90c | 88 | | Unknown -> "unknown " |
34e49164 | 89 | |
e6509c05 C |
90 | and print_name = function |
91 | NoName -> "" | |
92 | | MV ((_,name),_,_) -> name ^ " " | |
93 | | Name name -> name ^ " " | |
94 | ||
34e49164 | 95 | and baseType = function |
faf9a90c C |
96 | VoidType -> "void " |
97 | | CharType -> "char " | |
98 | | ShortType -> "short " | |
99 | | IntType -> "int " | |
100 | | DoubleType -> "double " | |
101 | | FloatType -> "float " | |
102 | | LongType -> "long " | |
103 | | LongLongType -> "long long " | |
104 | | BoolType -> "bool " | |
1eddfd50 C |
105 | | SizeType -> "size_t " |
106 | | SSizeType -> "ssize_t " | |
107 | | PtrDiffType -> "ptrdiff_t " | |
108 | ||
34e49164 C |
109 | |
110 | and structUnion = function | |
faf9a90c C |
111 | Struct -> "struct " |
112 | | Union -> "union " | |
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113 | |
114 | and sign = function | |
faf9a90c C |
115 | Signed -> "signed " |
116 | | Unsigned -> "unsigned " | |
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117 | |
118 | and const_vol = function | |
faf9a90c C |
119 | Const -> "const " |
120 | | Volatile -> "volatile " | |
121 | ||
122 | let typeC t = print_string (type2c t) | |
34e49164 C |
123 | |
124 | (* t1 should be less informative than t1, eg t1 = Pointer(Unknown) and t2 = | |
125 | Pointer(int) *) | |
126 | (* only used in iso *) | |
127 | (* needs to do something for MetaType *) | |
128 | let compatible t1 = function | |
129 | None -> t1 = Unknown | |
130 | | Some t2 -> | |
131 | let rec loop = function | |
132 | (Unknown,_) -> true | |
133 | | (ConstVol(cv1,ty1),ConstVol(cv2,ty2)) when cv1 = cv2 -> | |
134 | loop(ty1,ty2) | |
135 | | (Pointer(ty1),Pointer(ty2)) -> loop(ty1,ty2) | |
136 | | (FunctionPointer(ty1),_) -> false (* not enough info *) | |
137 | | (_,FunctionPointer(ty2)) -> false (* not enough info *) | |
138 | | (Array(ty1),Array(ty2)) -> loop(ty1,ty2) | |
139 | | (_,_) -> t1=t2 in | |
140 | loop (t1,t2) |