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genjava.ml
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(*
* Copyright (C)2005-2013 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*)
open JData
open Unix
open Ast
open Common
open Gencommon
open Gencommon.SourceWriter
open Type
open Printf
open Option
open ExtString
let is_boxed_type t = match follow t with
| TInst ({ cl_path = (["java";"lang"], "Boolean") }, [])
| TInst ({ cl_path = (["java";"lang"], "Double") }, [])
| TInst ({ cl_path = (["java";"lang"], "Integer") }, [])
| TInst ({ cl_path = (["java";"lang"], "Byte") }, [])
| TInst ({ cl_path = (["java";"lang"], "Short") }, [])
| TInst ({ cl_path = (["java";"lang"], "Character") }, [])
| TInst ({ cl_path = (["java";"lang"], "Float") }, []) -> true
| _ -> false
let unboxed_type gen t tbyte tshort tchar tfloat = match follow t with
| TInst ({ cl_path = (["java";"lang"], "Boolean") }, []) -> gen.gcon.basic.tbool
| TInst ({ cl_path = (["java";"lang"], "Double") }, []) -> gen.gcon.basic.tfloat
| TInst ({ cl_path = (["java";"lang"], "Integer") }, []) -> gen.gcon.basic.tint
| TInst ({ cl_path = (["java";"lang"], "Byte") }, []) -> tbyte
| TInst ({ cl_path = (["java";"lang"], "Short") }, []) -> tshort
| TInst ({ cl_path = (["java";"lang"], "Character") }, []) -> tchar
| TInst ({ cl_path = (["java";"lang"], "Float") }, []) -> tfloat
| _ -> assert false
let rec t_has_type_param t = match follow t with
| TInst({ cl_kind = KTypeParameter _ }, []) -> true
| TEnum(_, params)
| TInst(_, params) -> List.exists t_has_type_param params
| TFun(f,ret) -> t_has_type_param ret || List.exists (fun (_,_,t) -> t_has_type_param t) f
| _ -> false
let rec t_has_type_param_shallow last t = match follow t with
| TInst({ cl_kind = KTypeParameter _ }, []) -> true
| TEnum(_, params)
| TInst(_, params) when not last -> List.exists (t_has_type_param_shallow true) params
| TFun(f,ret) when not last -> t_has_type_param_shallow true ret || List.exists (fun (_,_,t) -> t_has_type_param_shallow true t) f
| _ -> false
let is_java_basic_type t =
match follow t with
| TInst( { cl_path = (["haxe"], "Int32") }, [] )
| TInst( { cl_path = (["haxe"], "Int64") }, [] )
| TAbstract( { a_path = ([], "Single") }, [] )
| TAbstract( { a_path = (["java"], ("Int8" | "Int16" | "Char16")) }, [] )
| TInst( { cl_path = ([], "Int") }, [] ) | TAbstract( { a_path = ([], "Int") }, [] )
| TInst( { cl_path = ([], "Float") }, [] ) | TAbstract( { a_path = ([], "Float") }, [] )
| TEnum( { e_path = ([], "Bool") }, [] ) | TAbstract( { a_path = ([], "Bool") }, [] ) ->
true
| _ -> false
let is_bool t =
match follow t with
| TEnum( { e_path = ([], "Bool") }, [] )
| TAbstract ({ a_path = ([], "Bool") },[]) ->
true
| _ -> false
let is_int_float gen t =
match follow (gen.greal_type t) with
| TInst( { cl_path = (["haxe"], "Int64") }, [] )
| TInst( { cl_path = (["haxe"], "Int32") }, [] )
| TInst( { cl_path = ([], "Int") }, [] ) | TAbstract( { a_path = ([], "Int") }, [] )
| TInst( { cl_path = ([], "Float") }, [] ) | TAbstract( { a_path = ([], "Float") }, [] ) ->
true
| (TAbstract _ as t) when like_float t -> true
| _ -> false
let parse_explicit_iface =
let regex = Str.regexp "\\." in
let parse_explicit_iface str =
let split = Str.split regex str in
let rec get_iface split pack =
match split with
| clname :: fn_name :: [] -> fn_name, (List.rev pack, clname)
| pack_piece :: tl -> get_iface tl (pack_piece :: pack)
| _ -> assert false
in
get_iface split []
in parse_explicit_iface
let is_string t =
match follow t with
| TInst( { cl_path = ([], "String") }, [] ) -> true
| _ -> false
let is_cl t = match follow t with
| TInst({ cl_path = ["java";"lang"],"Class" },_)
| TAbstract({ a_path = [], ("Class"|"Enum") },_) -> true
| TAnon(a) when is_some (anon_class t) -> true
| _ -> false
(* ******************************************* *)
(* JavaSpecificESynf *)
(* ******************************************* *)
(*
Some Java-specific syntax filters that must run before ExpressionUnwrap
dependencies:
It must run before ExprUnwrap, as it may not return valid Expr/Statement expressions
It must run before ClassInstance, as it will detect expressions that need unchanged TTypeExpr
It must run after CastDetect, as it changes casts
It must run after TryCatchWrapper, to change Std.is() calls inside there
*)
module JavaSpecificESynf =
struct
let name = "java_specific_e"
let priority = solve_deps name [ DBefore ExpressionUnwrap.priority; DBefore ClassInstance.priority; DAfter CastDetect.priority; DAfter TryCatchWrapper.priority ]
let get_cl_from_t t =
match follow t with
| TInst(cl,_) -> cl
| _ -> assert false
let traverse gen runtime_cl =
let basic = gen.gcon.basic in
let float_cl = get_cl ( get_type gen (["java";"lang"], "Double")) in
let i8_md = ( get_type gen (["java";"lang"], "Byte")) in
let i16_md = ( get_type gen (["java";"lang"], "Short")) in
let i64_md = ( get_type gen (["java";"lang"], "Long")) in
let c16_md = ( get_type gen (["java";"lang"], "Character")) in
let f_md = ( get_type gen (["java";"lang"], "Float")) in
let bool_md = get_type gen (["java";"lang"], "Boolean") in
let is_var = alloc_var "__is__" t_dynamic in
let rec run e =
match e.eexpr with
(* Math changes *)
| TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "NaN" }) ) ->
mk_static_field_access_infer float_cl "NaN" e.epos []
| TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "NEGATIVE_INFINITY" }) ) ->
mk_static_field_access_infer float_cl "NEGATIVE_INFINITY" e.epos []
| TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "POSITIVE_INFINITY" }) ) ->
mk_static_field_access_infer float_cl "POSITIVE_INFINITY" e.epos []
| TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "isNaN"}) ) ->
mk_static_field_access_infer float_cl "_isNaN" e.epos []
| TCall( ({ eexpr = TField( (_ as ef), FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = ("ffloor" as f) }) ) } as fe), p)
| TCall( ({ eexpr = TField( (_ as ef), FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = ("fceil" as f) }) ) } as fe), p) ->
Type.map_expr run { e with eexpr = TCall({ fe with eexpr = TField(ef, FDynamic (String.sub f 1 (String.length f - 1))) }, p) }
| TCall( ({ eexpr = TField( (_ as ef), FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = ("fround") }) ) } as fe), p) ->
Type.map_expr run { e with eexpr = TCall({ fe with eexpr = TField(ef, FDynamic "rint") }, p) }
| TCall( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "floor" }) ) }, _)
| TCall( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "round" }) ) }, _)
| TCall( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "ceil" }) ) }, _) ->
mk_cast basic.tint (Type.map_expr run { e with etype = basic.tfloat })
| TCall( ( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "isFinite" }) ) } as efield ), [v]) ->
{ e with eexpr = TCall( mk_static_field_access_infer runtime_cl "isFinite" efield.epos [], [run v] ) }
(* end of math changes *)
(* Std.is() *)
| TCall(
{ eexpr = TField( _, FStatic({ cl_path = ([], "Std") }, { cf_name = "is" })) },
[ obj; { eexpr = TTypeExpr(md) } ]
) ->
let mk_is is_basic obj md =
let obj = if is_basic then mk_cast t_dynamic obj else obj in
{ e with eexpr = TCall( { eexpr = TLocal is_var; etype = t_dynamic; epos = e.epos }, [
run obj;
{ eexpr = TTypeExpr md; etype = t_dynamic (* this is after all a syntax filter *); epos = e.epos }
] ) }
in
(match follow_module follow md with
| TClassDecl({ cl_path = ([], "Float") })
| TAbstractDecl({ a_path = ([], "Float") }) ->
{
eexpr = TCall(
mk_static_field_access_infer runtime_cl "isDouble" e.epos [],
[ run obj ]
);
etype = basic.tbool;
epos = e.epos
}
| TClassDecl{ cl_path = ([], "Int") }
| TAbstractDecl{ a_path = ([], "Int") } ->
{
eexpr = TCall(
mk_static_field_access_infer runtime_cl "isInt" e.epos [],
[ run obj ]
);
etype = basic.tbool;
epos = e.epos
}
| TAbstractDecl{ a_path = ([], "Bool") }
| TEnumDecl{ e_path = ([], "Bool") } ->
mk_is true obj bool_md
| TAbstractDecl{ a_path = ([], "Single") } ->
mk_is true obj f_md
| TAbstractDecl{ a_path = (["java"], "Int8") } ->
mk_is true obj i8_md
| TAbstractDecl{ a_path = (["java"], "Int16") } ->
mk_is true obj i16_md
| TAbstractDecl{ a_path = (["java"], "Char16") } ->
mk_is true obj c16_md
| TClassDecl{ cl_path = (["haxe"], "Int64") } ->
mk_is true obj i64_md
| TAbstractDecl{ a_path = ([], "Dynamic") }
| TClassDecl{ cl_path = ([], "Dynamic") } ->
(match obj.eexpr with
| TLocal _ | TConst _ -> { e with eexpr = TConst(TBool true) }
| _ -> { e with eexpr = TBlock([run obj; { e with eexpr = TConst(TBool true) }]) }
)
| _ ->
mk_is false obj md
)
(* end Std.is() *)
| _ -> Type.map_expr run e
in
run
let configure gen (mapping_func:texpr->texpr) =
let map e = Some(mapping_func e) in
gen.gsyntax_filters#add ~name:name ~priority:(PCustom priority) map
end;;
(* ******************************************* *)
(* JavaSpecificSynf *)
(* ******************************************* *)
(*
Some Java-specific syntax filters that can run after ExprUnwrap
dependencies:
Runs after ExprUnwarp
*)
module JavaSpecificSynf =
struct
let name = "java_specific"
let priority = solve_deps name [ DAfter ExpressionUnwrap.priority; DAfter ObjectDeclMap.priority; DAfter ArrayDeclSynf.priority; DBefore IntDivisionSynf.priority ]
let java_hash s =
let h = ref Int32.zero in
let thirtyone = Int32.of_int 31 in
for i = 0 to String.length s - 1 do
h := Int32.add (Int32.mul thirtyone !h) (Int32.of_int (int_of_char (String.unsafe_get s i)));
done;
!h
let rec is_final_return_expr is_switch e =
let is_final_return_expr = is_final_return_expr is_switch in
match e.eexpr with
| TReturn _
| TThrow _ -> true
(* this is hack to not use 'break' on switch cases *)
| TLocal { v_name = "__fallback__" } when is_switch -> true
| TCall( { eexpr = TLocal { v_name = "__goto__" } }, _ ) -> true
| TParenthesis p | TMeta (_,p) -> is_final_return_expr p
| TBlock bl -> is_final_return_block is_switch bl
| TSwitch (_, el_e_l, edef) ->
List.for_all (fun (_,e) -> is_final_return_expr e) el_e_l && Option.map_default is_final_return_expr false edef
| TMatch (_, _, il_vl_e_l, edef) ->
List.for_all (fun (_,_,e) -> is_final_return_expr e)il_vl_e_l && Option.map_default is_final_return_expr false edef
| TIf (_,eif, Some eelse) ->
is_final_return_expr eif && is_final_return_expr eelse
| TFor (_,_,e) ->
is_final_return_expr e
| TWhile (_,e,_) ->
is_final_return_expr e
| TFunction tf ->
is_final_return_expr tf.tf_expr
| TTry (e, ve_l) ->
is_final_return_expr e && List.for_all (fun (_,e) -> is_final_return_expr e) ve_l
| _ -> false
and is_final_return_block is_switch el =
match el with
| [] -> false
| final :: [] -> is_final_return_expr is_switch final
| hd :: tl -> is_final_return_block is_switch tl
let is_null e = match e.eexpr with | TConst(TNull) -> true | _ -> false
let rec is_equatable gen t =
match follow t with
| TInst(cl,_) ->
if cl.cl_path = (["haxe";"lang"], "IEquatable") then
true
else
List.exists (fun (cl,p) -> is_equatable gen (TInst(cl,p))) cl.cl_implements
|| (match cl.cl_super with | Some(cl,p) -> is_equatable gen (TInst(cl,p)) | None -> false)
| _ -> false
(*
Changing string switch
will take an expression like
switch(str)
{
case "a":
case "b":
}
and modify it to:
{
var execute_def = true;
switch(str.hashCode())
{
case (hashcode of a):
if (str == "a")
{
execute_def = false;
..code here
} //else if (str == otherVariableWithSameHashCode) {
...
}
...
}
if (execute_def)
{
..default code
}
}
this might actually be slower in some cases than a if/else approach, but it scales well and as a bonus,
hashCode in java are cached, so we only have the performance hit once to cache it.
*)
let change_string_switch gen eswitch e1 ecases edefault =
let basic = gen.gcon.basic in
let is_final_ret = is_final_return_expr false eswitch in
let has_default = is_some edefault in
let block = ref [] in
let local = match e1.eexpr with
| TLocal _ -> e1
| _ ->
let var = mk_temp gen "svar" e1.etype in
let added = { e1 with eexpr = TVars([var, Some(e1)]); etype = basic.tvoid } in
let local = mk_local var e1.epos in
block := added :: !block;
local
in
let execute_def_var = mk_temp gen "executeDef" gen.gcon.basic.tbool in
let execute_def = mk_local execute_def_var e1.epos in
let execute_def_set = { eexpr = TBinop(Ast.OpAssign, execute_def, { eexpr = TConst(TBool false); etype = basic.tbool; epos = e1.epos }); etype = basic.tbool; epos = e1.epos } in
let hash_cache = ref None in
let local_hashcode = ref { local with
eexpr = TCall({ local with
eexpr = TField(local, FDynamic "hashCode");
etype = TFun([], basic.tint);
}, []);
etype = basic.tint
} in
let get_hash_cache () =
match !hash_cache with
| Some c -> c
| None ->
let var = mk_temp gen "hash" basic.tint in
let cond = !local_hashcode in
block := { eexpr = TVars([var, Some cond]); etype = basic.tvoid; epos = local.epos } :: !block;
let local = mk_local var local.epos in
local_hashcode := local;
hash_cache := Some local;
local
in
let has_case = ref false in
(* first we need to reorder all cases so all collisions are close to each other *)
let get_str e = match e.eexpr with | TConst(TString s) -> s | _ -> assert false in
let has_conflict = ref false in
let rec reorder_cases unordered ordered =
match unordered with
| [] -> ordered
| (el, e) :: tl ->
let current = Hashtbl.create 1 in
List.iter (fun e ->
let str = get_str e in
let hash = java_hash str in
Hashtbl.add current hash true
) el;
let rec extract_fields cases found_cases ret_cases =
match cases with
| [] -> found_cases, ret_cases
| (el, e) :: tl ->
if List.exists (fun e -> Hashtbl.mem current (java_hash (get_str e)) ) el then begin
has_conflict := true;
List.iter (fun e -> Hashtbl.add current (java_hash (get_str e)) true) el;
extract_fields tl ( (el, e) :: found_cases ) ret_cases
end else
extract_fields tl found_cases ( (el, e) :: ret_cases )
in
let found, remaining = extract_fields tl [] [] in
let ret = if found <> [] then
let ret = List.sort (fun (e1,_) (e2,_) -> compare (List.length e2) (List.length e1) ) ( (el, e) :: found ) in
let rec loop ret acc =
match ret with
| (el, e) :: ( (_,_) :: _ as tl ) -> loop tl ( (true, el, e) :: acc )
| (el, e) :: [] -> ( (false, el, e) :: acc )
| _ -> assert false
in
List.rev (loop ret [])
else
(false, el, e) :: []
in
reorder_cases remaining (ordered @ ret)
in
let already_in_cases = Hashtbl.create 0 in
let change_case (has_fallback, el, e) =
let conds, el = List.fold_left (fun (conds,el) e ->
has_case := true;
match e.eexpr with
| TConst(TString s) ->
let hashed = java_hash s in
let equals_test = {
eexpr = TCall({ e with eexpr = TField(local, FDynamic "equals"); etype = TFun(["obj",false,t_dynamic],basic.tbool) }, [ e ]);
etype = basic.tbool;
epos = e.epos
} in
let hashed_expr = { eexpr = TConst(TInt hashed); etype = basic.tint; epos = e.epos } in
let hashed_exprs = if !has_conflict then begin
if Hashtbl.mem already_in_cases hashed then
el
else begin
Hashtbl.add already_in_cases hashed true;
hashed_expr :: el
end
end else hashed_expr :: el in
let conds = match conds with
| None -> equals_test
| Some c ->
(*
if there is more than one case, we should test first if hash equals to the one specified.
This way we can save a heavier string compare
*)
let equals_test = mk_paren {
eexpr = TBinop(Ast.OpBoolAnd, { eexpr = TBinop(Ast.OpEq, get_hash_cache(), hashed_expr); etype = basic.tbool; epos = e.epos }, equals_test);
etype = basic.tbool;
epos = e.epos;
} in
{ eexpr = TBinop(Ast.OpBoolOr, equals_test, c); etype = basic.tbool; epos = e1.epos }
in
Some conds, hashed_exprs
| _ -> assert false
) (None,[]) el in
let e = if has_default then Codegen.concat execute_def_set e else e in
let e = if !has_conflict then Codegen.concat e { e with eexpr = TBreak; etype = basic.tvoid } else e in
let e = {
eexpr = TIf(get conds, e, None);
etype = basic.tvoid;
epos = e.epos
} in
let e = if has_fallback then { e with eexpr = TBlock([ e; mk_local (alloc_var "__fallback__" t_dynamic) e.epos]) } else e in
(el, e)
in
let switch = { eswitch with
eexpr = TSwitch(!local_hashcode, List.map change_case (reorder_cases ecases []), None);
} in
(if !has_case then begin
(if has_default then block := { e1 with eexpr = TVars([execute_def_var, Some({ e1 with eexpr = TConst(TBool true); etype = basic.tbool })]); etype = basic.tvoid } :: !block);
block := switch :: !block
end);
(match edefault with
| None -> ()
| Some edef when not !has_case ->
block := edef :: !block
| Some edef ->
let eelse = if is_final_ret then Some { eexpr = TThrow { eexpr = TConst(TNull); etype = t_dynamic; epos = edef.epos }; etype = basic.tvoid; epos = edef.epos } else None in
block := { edef with eexpr = TIf(execute_def, edef, eelse); etype = basic.tvoid } :: !block
);
{ eswitch with eexpr = TBlock(List.rev !block) }
let get_cl_from_t t =
match follow t with
| TInst(cl,_) -> cl
| _ -> assert false
let traverse gen runtime_cl =
let basic = gen.gcon.basic in
let tchar = mt_to_t_dyn ( get_type gen (["java"], "Char16") ) in
let tbyte = mt_to_t_dyn ( get_type gen (["java"], "Int8") ) in
let tshort = mt_to_t_dyn ( get_type gen (["java"], "Int16") ) in
let tsingle = mt_to_t_dyn ( get_type gen ([], "Single") ) in
let string_ext = get_cl ( get_type gen (["haxe";"lang"], "StringExt")) in
let is_string t = match follow t with | TInst({ cl_path = ([], "String") }, []) -> true | _ -> false in
let rec run e =
match e.eexpr with
(* for new NativeArray<T> issues *)
| TNew(({ cl_path = (["java"], "NativeArray") } as cl), [t], el) when t_has_type_param t ->
mk_cast (TInst(cl,[t])) (mk_cast t_dynamic ({ e with eexpr = TNew(cl, [t_empty], List.map run el) }))
(* Std.int() *)
| TCall(
{ eexpr = TField( _, FStatic({ cl_path = ([], "Std") }, { cf_name = "int" })) },
[obj]
) ->
run (mk_cast basic.tint obj)
(* end Std.int() *)
| TField( ef, FInstance({ cl_path = ([], "String") }, { cf_name = "length" }) ) ->
{ e with eexpr = TCall(Type.map_expr run e, []) }
| TField( ef, field ) when field_name field = "length" && is_string ef.etype ->
{ e with eexpr = TCall(Type.map_expr run e, []) }
| TCall( ( { eexpr = TField(ef, field) } as efield ), args ) when is_string ef.etype && String.get (field_name field) 0 = '_' ->
let field = field_name field in
{ e with eexpr = TCall({ efield with eexpr = TField(run ef, FDynamic (String.sub field 1 ( (String.length field) - 1)) )}, List.map run args) }
| TCall( ( { eexpr = TField(ef, FInstance({ cl_path = [], "String" }, field )) } as efield ), args ) ->
let field = field.cf_name in
(match field with
| "charAt" | "charCodeAt" | "split" | "indexOf"
| "lastIndexOf" | "substring" | "substr" ->
{ e with eexpr = TCall(mk_static_field_access_infer string_ext field e.epos [], [run ef] @ (List.map run args)) }
| _ ->
{ e with eexpr = TCall(run efield, List.map run args) }
)
| TCast(expr, m) when is_boxed_type e.etype ->
(* let unboxed_type gen t tbyte tshort tchar tfloat = match follow t with *)
run { e with etype = unboxed_type gen e.etype tbyte tshort tchar tsingle }
| TCast(expr, _) when is_bool e.etype ->
{
eexpr = TCall(
mk_static_field_access_infer runtime_cl "toBool" expr.epos [],
[ run expr ]
);
etype = basic.tbool;
epos = e.epos
}
| TCast(expr, _) when is_int_float gen e.etype && not (is_int_float gen expr.etype) ->
let needs_cast = match gen.gfollow#run_f e.etype with
| TInst _ -> false
| _ -> true
in
let fun_name = if like_int e.etype then "toInt" else "toDouble" in
let ret = {
eexpr = TCall(
mk_static_field_access_infer runtime_cl fun_name expr.epos [],
[ run expr ]
);
etype = if fun_name = "toDouble" then basic.tfloat else basic.tint;
epos = expr.epos
} in
if needs_cast then mk_cast e.etype ret else ret
(*| TCast(expr, c) when is_int_float gen e.etype ->
(* cases when float x = (float) (java.lang.Double val); *)
(* FIXME: this fix is broken since it will fail on cases where float x = (float) (java.lang.Float val) or similar. FIX THIS *)
let need_second_cast = match gen.gfollow#run_f e.etype with
| TInst _ -> false
| _ -> true
in
if need_second_cast then { e with eexpr = TCast(mk_cast (follow e.etype) (run expr), c) } else Type.map_expr run e*)
| TBinop( (Ast.OpAssignOp OpAdd as op), e1, e2)
| TBinop( (Ast.OpAdd as op), e1, e2) when is_string e.etype || is_string e1.etype || is_string e2.etype ->
let is_assign = match op with Ast.OpAssignOp _ -> true | _ -> false in
let mk_to_string e = { e with eexpr = TCall( mk_static_field_access_infer runtime_cl "toString" e.epos [], [run e] ); etype = gen.gcon.basic.tstring } in
let check_cast e = match gen.greal_type e.etype with
| TDynamic _
| TAbstract({ a_path = ([], "Float") }, [])
| TAbstract({ a_path = ([], "Single") }, []) ->
mk_to_string e
| _ -> run e
in
{ e with eexpr = TBinop(op, (if is_assign then run e1 else check_cast e1), check_cast e2) }
| TCast(expr, _) when is_string e.etype ->
{ e with eexpr = TCall( mk_static_field_access_infer runtime_cl "toString" expr.epos [], [run expr] ) }
| TSwitch(cond, ecases, edefault) when is_string cond.etype ->
(*let change_string_switch gen eswitch e1 ecases edefault =*)
change_string_switch gen e (run cond) (List.map (fun (el,e) -> (el, run e)) ecases) (Option.map run edefault)
| TBinop( (Ast.OpNotEq as op), e1, e2)
| TBinop( (Ast.OpEq as op), e1, e2) when not (is_null e2 || is_null e1) && (is_string e1.etype || is_string e2.etype || is_equatable gen e1.etype || is_equatable gen e2.etype) ->
let static = mk_static_field_access_infer (runtime_cl) "valEq" e1.epos [] in
let eret = { eexpr = TCall(static, [run e1; run e2]); etype = gen.gcon.basic.tbool; epos=e.epos } in
if op = Ast.OpNotEq then { eret with eexpr = TUnop(Ast.Not, Ast.Prefix, eret) } else eret
| TBinop( (Ast.OpNotEq | Ast.OpEq as op), e1, e2) when is_cl e1.etype && is_cl e2.etype ->
{ e with eexpr = TBinop(op, mk_cast t_empty (run e1), mk_cast t_empty (run e2)) }
| _ -> Type.map_expr run e
in
run
let configure gen (mapping_func:texpr->texpr) =
(if java_hash "Testing string hashCode implementation from haXe" <> (Int32.of_int 545883604) then assert false);
let map e = Some(mapping_func e) in
gen.gsyntax_filters#add ~name:name ~priority:(PCustom priority) map
end;;
let connecting_string = "?" (* ? see list here http://www.fileformat.info/info/unicode/category/index.htm and here for C# http://msdn.microsoft.com/en-us/library/aa664670.aspx *)
let default_package = "java" (* I'm having this separated as I'm still not happy with having a cs package. Maybe dotnet would be better? *)
let strict_mode = ref false (* strict mode is so we can check for unexpected information *)
(* reserved c# words *)
let reserved = let res = Hashtbl.create 120 in
List.iter (fun lst -> Hashtbl.add res lst ("_" ^ lst)) ["abstract"; "assert"; "boolean"; "break"; "byte"; "case"; "catch"; "char"; "class";
"const"; "continue"; "default"; "do"; "double"; "else"; "enum"; "extends"; "final";
"false"; "finally"; "float"; "for"; "goto"; "if"; "implements"; "import"; "instanceof"; "int";
"interface"; "long"; "native"; "new"; "null"; "package"; "private"; "protected"; "public"; "return"; "short";
"static"; "strictfp"; "super"; "switch"; "synchronized"; "this"; "throw"; "throws"; "transient"; "true"; "try";
"void"; "volatile"; "while"; ];
res
let dynamic_anon = TAnon( { a_fields = PMap.empty; a_status = ref Closed } )
let rec get_class_modifiers meta cl_type cl_access cl_modifiers =
match meta with
| [] -> cl_type,cl_access,cl_modifiers
(*| (Meta.Struct,[],_) :: meta -> get_class_modifiers meta "struct" cl_access cl_modifiers*)
| (Meta.Protected,[],_) :: meta -> get_class_modifiers meta cl_type "protected" cl_modifiers
| (Meta.Internal,[],_) :: meta -> get_class_modifiers meta cl_type "" cl_modifiers
(* no abstract for now | (":abstract",[],_) :: meta -> get_class_modifiers meta cl_type cl_access ("abstract" :: cl_modifiers)
| (Meta.Static,[],_) :: meta -> get_class_modifiers meta cl_type cl_access ("static" :: cl_modifiers) TODO: support those types *)
| (Meta.Final,[],_) :: meta -> get_class_modifiers meta cl_type cl_access ("final" :: cl_modifiers)
| _ :: meta -> get_class_modifiers meta cl_type cl_access cl_modifiers
let rec get_fun_modifiers meta access modifiers =
match meta with
| [] -> access,modifiers
| (Meta.Protected,[],_) :: meta -> get_fun_modifiers meta "protected" modifiers
| (Meta.Internal,[],_) :: meta -> get_fun_modifiers meta "" modifiers
(*| (Meta.ReadOnly,[],_) :: meta -> get_fun_modifiers meta access ("readonly" :: modifiers)*)
(*| (Meta.Unsafe,[],_) :: meta -> get_fun_modifiers meta access ("unsafe" :: modifiers)*)
| (Meta.Volatile,[],_) :: meta -> get_fun_modifiers meta access ("volatile" :: modifiers)
| (Meta.Transient,[],_) :: meta -> get_fun_modifiers meta access ("transient" :: modifiers)
| _ :: meta -> get_fun_modifiers meta access modifiers
(* this was the way I found to pass the generator context to be accessible across all functions here *)
(* so 'configure' is almost 'top-level' and will have all functions needed to make this work *)
let configure gen =
let basic = gen.gcon.basic in
let fn_cl = get_cl (get_type gen (["haxe";"lang"],"Function")) in
let runtime_cl = get_cl (get_type gen (["haxe";"lang"],"Runtime")) in
(*let string_ref = get_cl ( get_type gen (["haxe";"lang"], "StringRefl")) in*)
let ti64 = match ( get_type gen (["haxe";"_Int64"], "NativeInt64") ) with | TTypeDecl t -> TType(t,[]) | _ -> assert false in
let has_tdynamic params =
List.exists (fun e -> match run_follow gen e with | TDynamic _ -> true | _ -> false) params
in
(*
The type parameters always need to be changed to their boxed counterparts
*)
let change_param_type md params =
match md with
| TClassDecl( { cl_path = (["java"], "NativeArray") } ) -> params
| _ ->
match params with
| [] -> []
| _ ->
if has_tdynamic params then List.map (fun _ -> t_dynamic) params else
List.map (fun t ->
let f_t = gen.gfollow#run_f t in
match f_t with
| TEnum ({ e_path = ([], "Bool") }, [])
| TAbstract ({ a_path = ([], "Bool") },[])
| TInst ({ cl_path = ([],"Float") },[])
| TAbstract ({ a_path = ([],"Float") },[])
| TInst ({ cl_path = ["haxe"],"Int32" },[])
| TInst ({ cl_path = ["haxe"],"Int64" },[])
| TInst ({ cl_path = ([],"Int") },[])
| TAbstract ({ a_path = ([],"Int") },[])
| TType ({ t_path = ["haxe";"_Int64"], "NativeInt64" },[])
| TAbstract ({ a_path = ["haxe";"_Int64"], "NativeInt64" },[])
| TType ({ t_path = ["java"],"Int8" },[])
| TAbstract ({ a_path = ["java"],"Int8" },[])
| TType ({ t_path = ["java"],"Int16" },[])
| TAbstract ({ a_path = ["java"],"Int16" },[])
| TType ({ t_path = ["java"],"Char16" },[])
| TAbstract ({ a_path = ["java"],"Char16" },[])
| TType ({ t_path = [],"Single" },[])
| TAbstract ({ a_path = [],"Single" },[]) ->
basic.tnull f_t
(*| TType ({ t_path = [], "Null"*)
| TInst (cl, ((_ :: _) as p)) ->
TInst(cl, List.map (fun _ -> t_dynamic) p)
| TEnum (e, ((_ :: _) as p)) ->
TEnum(e, List.map (fun _ -> t_dynamic) p)
| _ -> t
) params
in
let change_clname name =
String.map (function | '$' -> '.' | c -> c) name
in
let change_id name = try Hashtbl.find reserved name with | Not_found -> name in
let rec change_ns ns = match ns with
| [] -> ["haxe"; "root"]
| _ -> List.map change_id ns
in
let change_field = change_id in
let write_id w name = write w (change_id name) in
let write_field w name = write w (change_field name) in
gen.gfollow#add ~name:"follow_basic" (fun t -> match t with
| TEnum ({ e_path = ([], "Bool") }, [])
| TAbstract ({ a_path = ([], "Bool") },[])
| TEnum ({ e_path = ([], "Void") }, [])
| TAbstract ({ a_path = ([], "Void") },[])
| TInst ({ cl_path = ([],"Float") },[])
| TAbstract ({ a_path = ([],"Float") },[])
| TInst ({ cl_path = ([],"Int") },[])
| TAbstract ({ a_path = ([],"Int") },[])
| TInst( { cl_path = (["haxe"], "Int32") }, [] )
| TInst( { cl_path = (["haxe"], "Int64") }, [] )
| TType ({ t_path = ["haxe";"_Int64"], "NativeInt64" },[])
| TAbstract ({ a_path = ["haxe";"_Int64"], "NativeInt64" },[])
| TType ({ t_path = ["java"],"Int8" },[])
| TAbstract ({ a_path = ["java"],"Int8" },[])
| TType ({ t_path = ["java"],"Int16" },[])
| TAbstract ({ a_path = ["java"],"Int16" },[])
| TType ({ t_path = ["java"],"Char16" },[])
| TAbstract ({ a_path = ["java"],"Char16" },[])
| TType ({ t_path = [],"Single" },[])
| TAbstract ({ a_path = [],"Single" },[])
| TType ({ t_path = [],"Null" },[_]) -> Some t
| TAbstract ({ a_impl = Some _ } as a, pl) ->
Some (gen.gfollow#run_f ( Codegen.Abstract.get_underlying_type a pl) )
| TAbstract( { a_path = ([], "EnumValue") }, _ )
| TInst( { cl_path = ([], "EnumValue") }, _ ) -> Some t_dynamic
| _ -> None);
let change_path path = (change_ns (fst path), change_clname (snd path)) in
let path_s path = match path with
| (ns,clname) -> path_s (change_ns ns, change_clname clname)
in
let cl_cl = get_cl (get_type gen (["java";"lang"],"Class")) in
let rec real_type t =
let t = gen.gfollow#run_f t in
match t with
| TAbstract ({ a_impl = Some _ } as a, pl) ->
real_type (Codegen.Abstract.get_underlying_type a pl)
| TInst( { cl_path = (["haxe"], "Int32") }, [] ) -> gen.gcon.basic.tint
| TInst( { cl_path = (["haxe"], "Int64") }, [] ) -> ti64
| TAbstract( { a_path = ([], "Class") }, p )
| TAbstract( { a_path = ([], "Enum") }, p )
| TInst( { cl_path = ([], "Class") }, p )
| TInst( { cl_path = ([], "Enum") }, p ) -> TInst(cl_cl,p)
| TEnum(e,params) -> TEnum(e, List.map (fun _ -> t_dynamic) params)
| TInst(c,params) when Meta.has Meta.Enum c.cl_meta ->
TInst(c, List.map (fun _ -> t_dynamic) params)
| TInst _ -> t
| TType({ t_path = ([], "Null") }, [t]) when is_java_basic_type t -> t_dynamic
| TType({ t_path = ([], "Null") }, [t]) ->
(match follow t with
| TInst( { cl_kind = KTypeParameter _ }, []) ->
(* t_dynamic *)
real_type t
| _ -> real_type t
)
| TType _ | TAbstract _ -> t
| TAnon (anon) -> (match !(anon.a_status) with
| Statics _ | EnumStatics _ | AbstractStatics _ -> t
| _ -> t_dynamic)
| TFun _ -> TInst(fn_cl,[])
| _ -> t_dynamic
in
let scope = ref PMap.empty in
let imports = ref [] in
let clear_scope () =
scope := PMap.empty;
imports := [];
in
let add_scope name =
scope := PMap.add name () !scope
in
let add_import pos path =
let name = snd path in
let rec loop = function
| (pack, n) :: _ when name = n ->
if path <> (pack,n) then
gen.gcon.error ("This expression cannot be generated because " ^ path_s path ^ " is shadowed by the current scope and ") pos
| _ :: tl ->
loop tl
| [] ->
(* add import *)
imports := path :: !imports
in
loop !imports
in
let path_s_import pos path = match path with
| [], name when PMap.mem name !scope ->
gen.gcon.error ("This expression cannot be generated because " ^ name ^ " is shadowed by the current scope") pos;
name
| pack1 :: _, name when PMap.mem pack1 !scope -> (* exists in scope *)
add_import pos path;
(* check if name exists in scope *)
if PMap.mem name !scope then
gen.gcon.error ("This expression cannot be generated because " ^ pack1 ^ " and " ^ name ^ " are both shadowed by the current scope") pos;
name
| _ -> path_s path
in
let is_dynamic t = match real_type t with
| TMono _ | TDynamic _ -> true
| TAnon anon ->
(match !(anon.a_status) with
| EnumStatics _ | Statics _ | AbstractStatics _ -> false
| _ -> true
)
| _ -> false
in
let rec t_s pos t =
match real_type t with
(* basic types *)
| TEnum ({ e_path = ([], "Bool") }, [])
| TAbstract ({ a_path = ([], "Bool") },[]) -> "boolean"
| TEnum ({ e_path = ([], "Void") }, [])
| TAbstract ({ a_path = ([], "Void") },[]) ->
path_s_import pos (["java";"lang"], "Object")
| TInst ({ cl_path = ([],"Float") },[])
| TAbstract ({ a_path = ([],"Float") },[]) -> "double"
| TInst ({ cl_path = ([],"Int") },[])
| TAbstract ({ a_path = ([],"Int") },[]) -> "int"
| TType ({ t_path = ["haxe";"_Int64"], "NativeInt64" },[])
| TAbstract ({ a_path = ["haxe";"_Int64"], "NativeInt64" },[]) -> "long"
| TType ({ t_path = ["java"],"Int8" },[])
| TAbstract ({ a_path = ["java"],"Int8" },[]) -> "byte"
| TType ({ t_path = ["java"],"Int16" },[])
| TAbstract ({ a_path = ["java"],"Int16" },[]) -> "short"
| TType ({ t_path = ["java"],"Char16" },[])
| TAbstract ({ a_path = ["java"],"Char16" },[]) -> "char"
| TType ({ t_path = [],"Single" },[])
| TAbstract ({ a_path = [],"Single" },[]) -> "float"
| TInst ({ cl_path = ["haxe"],"Int32" },[])
| TAbstract ({ a_path = ["haxe"],"Int32" },[]) -> "int"
| TInst ({ cl_path = ["haxe"],"Int64" },[])
| TAbstract ({ a_path = ["haxe"],"Int64" },[]) -> "long"
| TInst({ cl_path = (["java"], "NativeArray") }, [param]) ->
let rec check_t_s t =
match real_type t with
| TInst({ cl_path = (["java"], "NativeArray") }, [param]) ->
(check_t_s param) ^ "[]"
| _ -> t_s pos (run_follow gen t)
in
(check_t_s param) ^ "[]"
(* end of basic types *)
| TInst ({ cl_kind = KTypeParameter _; cl_path=p }, []) -> snd p
| TAbstract ({ a_path = [], "Dynamic" },[]) ->
path_s_import pos (["java";"lang"], "Object")
| TMono r -> (match !r with | None -> "java.lang.Object" | Some t -> t_s pos (run_follow gen t))
| TInst ({ cl_path = [], "String" }, []) ->
path_s_import pos (["java";"lang"], "String")
| TAbstract ({ a_path = [], "Class" }, [p]) | TAbstract ({ a_path = [], "Enum" }, [p])
| TInst ({ cl_path = [], "Class" }, [p]) | TInst ({ cl_path = [], "Enum" }, [p]) ->
path_param_s pos (TClassDecl cl_cl) (["java";"lang"], "Class") [p]
| TAbstract ({ a_path = [], "Class" }, _) | TAbstract ({ a_path = [], "Enum" }, _)
| TInst ({ cl_path = [], "Class" }, _) | TInst ({ cl_path = [], "Enum" }, _) ->
path_s_import pos (["java";"lang"], "Class")
| TEnum ({e_path = p}, _) ->
path_s_import pos p
| TInst (({cl_path = p;} as cl), _) when Meta.has Meta.Enum cl.cl_meta ->
path_s_import pos p
| TInst (({cl_path = p;} as cl), params) -> (path_param_s pos (TClassDecl cl) p params)
| TType (({t_path = p;} as t), params) -> (path_param_s pos (TTypeDecl t) p params)
| TAnon (anon) ->
(match !(anon.a_status) with
| Statics _ | EnumStatics _ | AbstractStatics _ ->
path_s_import pos (["java";"lang"], "Class")
| _ ->
path_s_import pos (["java";"lang"], "Object"))
| TDynamic _ ->
path_s_import pos (["java";"lang"], "Object")
(* No Lazy type nor Function type made. That's because function types will be at this point be converted into other types *)
| _ -> if !strict_mode then begin trace ("[ !TypeError " ^ (Type.s_type (Type.print_context()) t) ^ " ]"); assert false end else "[ !TypeError " ^ (Type.s_type (Type.print_context()) t) ^ " ]"
and param_t_s pos t =
match run_follow gen t with
| TEnum ({ e_path = ([], "Bool") }, [])
| TAbstract ({ a_path = ([], "Bool") },[]) ->
path_s_import pos (["java";"lang"], "Boolean")
| TInst ({ cl_path = ([],"Float") },[])
| TAbstract ({ a_path = ([],"Float") },[]) ->
path_s_import pos (["java";"lang"], "Double")
| TInst ({ cl_path = ([],"Int") },[])
| TAbstract ({ a_path = ([],"Int") },[]) ->
path_s_import pos (["java";"lang"], "Integer")
| TType ({ t_path = ["haxe";"_Int64"], "NativeInt64" },[])
| TAbstract ({ a_path = ["haxe";"_Int64"], "NativeInt64" },[]) ->
path_s_import pos (["java";"lang"], "Long")
| TInst ({ cl_path = ["haxe"],"Int64" },[])
| TAbstract ({ a_path = ["haxe"],"Int64" },[]) ->
path_s_import pos (["java";"lang"], "Long")
| TInst ({ cl_path = ["haxe"],"Int32" },[])
| TAbstract ({ a_path = ["haxe"],"Int32" },[]) ->
path_s_import pos (["java";"lang"], "Integer")
| TType ({ t_path = ["java"],"Int8" },[])
| TAbstract ({ a_path = ["java"],"Int8" },[]) ->
path_s_import pos (["java";"lang"], "Byte")
| TType ({ t_path = ["java"],"Int16" },[])
| TAbstract ({ a_path = ["java"],"Int16" },[]) ->
path_s_import pos (["java";"lang"], "Short")
| TType ({ t_path = ["java"],"Char16" },[])
| TAbstract ({ a_path = ["java"],"Char16" },[]) ->
path_s_import pos (["java";"lang"], "Character")
| TType ({ t_path = [],"Single" },[])
| TAbstract ({ a_path = [],"Single" },[]) ->
path_s_import pos (["java";"lang"], "Float")
| TDynamic _ -> "?"
| TInst (cl, params) -> t_s pos (TInst(cl, change_param_type (TClassDecl cl) params))
| TType (cl, params) -> t_s pos (TType(cl, change_param_type (TTypeDecl cl) params))
| TEnum (e, params) -> t_s pos (TEnum(e, change_param_type (TEnumDecl e) params))
| _ -> t_s pos t
and path_param_s pos md path params =
match params with
| [] -> path_s_import pos path
| _ when has_tdynamic (change_param_type md params) -> path_s_import pos path
| _ -> sprintf "%s<%s>" (path_s_import pos path) (String.concat ", " (List.map (fun t -> param_t_s pos t) (change_param_type md params)))
in
let rett_s pos t =
match t with
| TEnum ({e_path = ([], "Void")}, [])
| TAbstract ({ a_path = ([], "Void") },[]) -> "void"
| _ -> t_s pos t
in
let escape ichar b =
match ichar with
| 92 (* \ *) -> Buffer.add_string b "\\\\"
| 39 (* ' *) -> Buffer.add_string b "\\\'"
| 34 -> Buffer.add_string b "\\\""
| 13 (* \r *) -> Buffer.add_string b "\\r"
| 10 (* \n *) -> Buffer.add_string b "\\n"
| 9 (* \t *) -> Buffer.add_string b "\\t"
| c when c < 32 || c >= 127 -> Buffer.add_string b (Printf.sprintf "\\u%.4x" c)
| c -> Buffer.add_char b (Char.chr c)
in
let escape s =
let b = Buffer.create 0 in