HCoop / bpt / coccinelle.git / blame
| Commit | Line | Data |
|---|---|---|
| 34e49164 C |
1 | (* Reorganize the top level of a rule to be a list of either top-level |
| 2 | declarations or code dots. A function declaration is always considered top | |
| 3 | level. A statement is always considered code dots. A variable declaration | |
| 4 | is ambiguous. We use the heuristic that if there are code dots somewhere | |
| 5 | else, then the variable declaration is at top level, otherwise it applies | |
| 6 | both at top level and to all code. *) | |
| 7 | ||
| 8 | (* This is assumed to be done before compute_lines, and thus the info on a | |
| 9 | complex term is assumed to be Ast0.default_info *) | |
| 10 | ||
| 11 | module Ast0 = Ast0_cocci | |
| 12 | ||
| 13 | let top_dots l = | |
| 14 | let circle x = | |
| 15 | match Ast0.unwrap x with Ast0.Circles(_) -> true | _ -> false in | |
| 16 | let star x = | |
| 17 | match Ast0.unwrap x with Ast0.Stars(_) -> true | _ -> false in | |
| 18 | if List.exists circle l | |
| 19 | then Ast0.wrap (Ast0.CIRCLES(l)) | |
| 20 | else if List.exists star l | |
| 21 | then Ast0.wrap (Ast0.STARS(l)) | |
| 22 | else Ast0.wrap (Ast0.DOTS(l)) | |
| 23 | ||
| 24 | let scan_code l = | |
| 25 | let statements = ref false in | |
| 26 | let rec loop = function | |
| 27 | [] -> ([],[]) | |
| 28 | | (x::xs) as all -> | |
| 29 | (match Ast0.unwrap x with | |
| 30 | (Ast0.OTHER(code)) -> | |
| 31 | (match Ast0.unwrap code with | |
| 32 | Ast0.Decl(_) -> | |
| 33 | let (front,rest) = loop xs in | |
| 34 | (code::front,rest) | |
| 35 | | _ -> | |
| 36 | statements := true; | |
| 37 | let (front,rest) = loop xs in | |
| 38 | (code::front,rest)) | |
| 39 | | _ -> ([],all)) in | |
| 40 | match loop l with | |
| 41 | ([],_) as res -> res | |
| 42 | | (code,rest) -> | |
| 43 | if !statements = true | |
| 44 | then ([Ast0.wrap(Ast0.CODE(top_dots code))],rest) | |
| 45 | else | |
| 46 | (List.map | |
| 47 | (function d -> | |
| 48 | match Ast0.unwrap d with | |
| 49 | Ast0.Decl(bef,x) -> Ast0.wrap (Ast0.DECL(d)) | |
| 50 | | _ -> failwith "impossible") | |
| 51 | code, | |
| 52 | rest) | |
| 53 | ||
| 54 | let rec scan_top_decl = function | |
| 55 | [] -> ([],[]) | |
| 56 | | ((topdecl::rest) as all) -> | |
| 57 | (match Ast0.unwrap topdecl with | |
| 58 | Ast0.OTHER(_) -> ([],all) | |
| 59 | | _ -> let (front,rest) = scan_top_decl rest in (topdecl::front,rest)) | |
| 60 | ||
| 61 | (* for debugging *) | |
| 62 | let l2c l = | |
| 63 | match Ast0.unwrap l with | |
| 64 | Ast0.DECL(_) -> "decl" | |
| 65 | | Ast0.CODE(_) -> "code" | |
| 66 | | Ast0.FILEINFO(_,_) -> "fileinfo" | |
| 67 | | Ast0.ERRORWORDS(_) -> "errorwords" | |
| 68 | | Ast0.OTHER(_) -> "other" | |
| 69 | ||
| 70 | let rec top_level l = | |
| 71 | match scan_code l with | |
| 72 | (code,[]) -> code | |
| 73 | | (code,rest) -> | |
| 74 | (match scan_top_decl rest with | |
| 75 | (top_decls,[]) -> code@top_decls | |
| 76 | | (top_decls,rest) -> code @ top_decls @ (top_level rest)) |