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