HCoop / bpt / coccinelle.git / blame
| Commit | Line | Data |
|---|---|---|
| 34e49164 C |
1 | module Ast0 = Ast0_cocci |
| 2 | module Ast = Ast_cocci | |
| 3 | module V0 = Visitor_ast0 | |
| b1b2de81 | 4 | module VT0 = Visitor_ast0_types |
| 34e49164 C |
5 | |
| 6 | (* find assignments that can match an initialization *) | |
| 7 | ||
| 8 | let pure_mcodekind = function | |
| 9 | Ast0.CONTEXT(mc) -> | |
| 10 | (match !mc with | |
| 11 | (Ast.NOTHING,_,_) -> true | |
| 12 | | _ -> false) | |
| 13 | | _ -> false | |
| 14 | ||
| 15 | let is_simple_assign left op = | |
| 16 | (match Ast0.unwrap left with | |
| 17 | Ast0.Ident(_) | Ast0.MetaExpr(_,_,_,_,_) -> true | |
| 18 | | _ -> false) | |
| 19 | && | |
| 20 | ((Ast0.unwrap_mcode op) = Ast.SimpleAssign) | |
| 21 | ||
| 22 | let is_simple_ast_assign left op minus_left = | |
| 23 | (match Ast.unwrap left with | |
| 24 | Ast.Ident(_) -> true | |
| 25 | | Ast.MetaExpr(name,_,_,_,_,_) -> | |
| 26 | (match Ast0.unwrap minus_left with | |
| 27 | Ast0.MetaExpr(name1,_,_,_,_) -> | |
| 28 | Ast.unwrap_mcode name = Ast0.unwrap_mcode name1 | |
| 29 | | _ -> false) | |
| 30 | | _ -> false) | |
| 31 | && | |
| 32 | ((Ast.unwrap_mcode op) = Ast.SimpleAssign) | |
| 33 | ||
| 34 | let warning e msg = | |
| 35 | Common.pr2 | |
| 36 | ("the simple assignment expression on line "^ | |
| 37 | (string_of_int (Ast0.get_line e))^ | |
| 38 | " contains transformations\n"^ | |
| 39 | "that prevent it from matching a declaration ("^msg^")\n"); | |
| 40 | e | |
| 41 | ||
| 42 | let rebuild e1 left right op simple = | |
| 43 | Ast0.rewrap e1 (Ast0.Assignment(left,op,right,simple)) | |
| 44 | ||
| 45 | let rec exp mc e1 = | |
| 46 | match Ast0.unwrap e1 with | |
| 47 | Ast0.Assignment(left,op,right,_) -> | |
| 48 | if is_simple_assign left op | |
| 49 | then | |
| 50 | (if !Flag.sgrep_mode2 | |
| 51 | then rebuild e1 left right op true | |
| 52 | else | |
| 53 | match mc with | |
| 54 | Ast0.MINUS(mc) -> | |
| 55 | (match !mc with | |
| 56 | ([[Ast.ExpressionTag(e2)]],_) -> | |
| 57 | (match Ast.unwrap e2 with | |
| 58 | Ast.Assignment(left',op',_,_) -> | |
| 59 | if is_simple_ast_assign left' op' left | |
| 60 | then rebuild e1 left right op true | |
| 61 | else warning e1 "replacement is not simple" | |
| 62 | | _ -> warning e1 "replacement is not an assignment") | |
| 63 | | _ -> warning e1 "multiple replacements") | |
| 64 | | m -> | |
| 65 | let pure = | |
| 66 | (pure_mcodekind m) && | |
| 67 | (pure_mcodekind (Ast0.get_mcodekind left)) && | |
| 68 | (pure_mcodekind (Ast0.get_mcode_mcodekind op)) in | |
| 69 | if not pure | |
| 70 | then warning e1 "not pure" | |
| 71 | else rebuild e1 left right op pure) | |
| 72 | else e1 | |
| 73 | | Ast0.DisjExpr(lp,exps,mids,rp) -> | |
| 74 | Ast0.rewrap e1 | |
| 75 | (Ast0.DisjExpr | |
| 76 | (lp,List.map (function x -> exp (Ast0.get_mcodekind x) x) exps, | |
| 77 | mids,rp)) | |
| 78 | | Ast0.OptExp(e) -> | |
| 79 | Ast0.rewrap e1 (Ast0.OptExp(exp (Ast0.get_mcodekind e) e)) | |
| 80 | | Ast0.UniqueExp(e) -> | |
| 81 | Ast0.rewrap e1 (Ast0.UniqueExp(exp (Ast0.get_mcodekind e) e)) | |
| 82 | | _ -> e1 | |
| 83 | ||
| 84 | let simple_assignments l = | |
| 34e49164 C |
85 | let statement r k e = |
| 86 | match Ast0.unwrap e with | |
| 87 | Ast0.Exp(e1) -> Ast0.rewrap e (Ast0.Exp(exp (Ast0.get_mcodekind e) e1)) | |
| 88 | | _ -> k e in | |
| 89 | let fn = | |
| 90 | V0.rebuilder | |
| b1b2de81 C |
91 | {V0.rebuilder_functions with VT0.rebuilder_stmtfn = statement} in |
| 92 | List.map fn.VT0.rebuilder_rec_top_level l |