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genphp.ml
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genphp.ml
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(*
* haXe/PHP Compiler
* Copyright (c)2008 Franco Ponticelli
* based on and including code by (c)2005-2008 Nicolas Cannasse
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
open Ast
open Type
open Common
type method_name = {
mutable mpath : path;
mutable mname : string;
}
type inline_method = {
iname : string;
iindex : int;
iexpr : texpr;
ihasthis : bool;
iin_block : bool;
iarguments : string list;
ilocals : (string,string) PMap.t;
iinv_locals : (string,string) PMap.t;
}
type context = {
com : Common.context;
ch : out_channel;
buf : Buffer.t;
path : path;
stack : Codegen.stack_context;
mutable nested_loops : int;
mutable inline_index : int;
mutable curclass : tclass;
mutable curmethod : string;
mutable tabs : string;
mutable in_value : string option;
mutable in_loop : bool;
mutable in_block : bool;
mutable in_instance_method : bool;
mutable imports : (string,string list list) Hashtbl.t;
mutable extern_required_paths : (string list * string) list;
mutable extern_classes_with_init : path list;
mutable locals : (string,string) PMap.t;
mutable inv_locals : (string,string) PMap.t;
mutable local_types : t list;
mutable inits : texpr list;
mutable constructor_block : bool;
mutable all_dynamic_methods: method_name list;
mutable dynamic_methods: tclass_field list;
mutable is_call : bool;
mutable cwd : string;
mutable inline_methods : inline_method list;
mutable lib_path : string;
}
let join_class_path path separator =
let result = match fst path, snd path with
| [], s -> s
| el, s -> String.concat separator el ^ separator ^ s in
if (String.contains result '+') then begin
let idx = String.index result '+' in
(String.sub result 0 idx) ^ (String.sub result (idx+1) ((String.length result) - idx -1 ) )
end else
result;;
(* Get a string to represent a type.
The "suffix" will be nothing or "_obj", depending if we want the name of the
pointer class or the pointee (_obj class *)
let rec class_string klass suffix params =
(match klass.cl_path with
(* Array class *)
| ([],"Array") -> (snd klass.cl_path) ^ suffix ^ "<" ^ (String.concat ","
(List.map type_string params) ) ^ " >"
| _ when klass.cl_kind=KTypeParameter -> "Dynamic"
| ([],"#Int") -> "/* # */int"
| (["haxe";"io"],"Unsigned_char__") -> "unsigned char"
| ([],"Class") -> "Class"
| ([],"Null") -> (match params with
| [t] ->
(match follow t with
| TInst ({ cl_path = [],"Int" },_)
| TInst ({ cl_path = [],"Float" },_)
| TEnum ({ e_path = [],"Bool" },_) -> "Dynamic"
| _ -> "/*NULL*/" ^ (type_string t) )
| _ -> assert false);
(* Normal class *)
| _ -> (join_class_path klass.cl_path "::") ^ suffix
)
and type_string_suff suffix haxe_type =
(match haxe_type with
| TMono r -> (match !r with None -> "Dynamic" | Some t -> type_string_suff suffix t)
| TEnum ({ e_path = ([],"Void") },[]) -> "Void"
| TEnum ({ e_path = ([],"Bool") },[]) -> "bool"
| TInst ({ cl_path = ([],"Float") },[]) -> "double"
| TInst ({ cl_path = ([],"Int") },[]) -> "int"
| TEnum (enum,params) -> (join_class_path enum.e_path "::") ^ suffix
| TInst (klass,params) -> (class_string klass suffix params)
| TType (type_def,params) ->
(match type_def.t_path with
| [] , "Null" ->
(match params with
| [t] ->
(match follow t with
| TInst ({ cl_path = [],"Int" },_)
| TInst ({ cl_path = [],"Float" },_)
| TEnum ({ e_path = [],"Bool" },_) -> "Dynamic"
| _ -> type_string_suff suffix t)
| _ -> assert false);
| [] , "Array" ->
(match params with
| [t] -> "Array<" ^ (type_string (follow t) ) ^ " >"
| _ -> assert false)
| _ -> type_string_suff suffix (apply_params type_def.t_types params type_def.t_type)
)
| TFun (args,haxe_type) -> "Dynamic"
| TAnon anon -> "Dynamic"
| TDynamic haxe_type -> "Dynamic"
| TLazy func -> type_string_suff suffix ((!func)())
)
and type_string haxe_type =
type_string_suff "" haxe_type;;
let debug_expression expression type_too =
"/* " ^ Type.s_expr_kind expression ^ (if (type_too) then " = " ^ (type_string expression.etype) else "") ^ " */";;
let rec register_extern_required_path ctx path =
if (List.exists(fun p -> p = path) ctx.extern_classes_with_init) && not (List.exists(fun p -> p = path) ctx.extern_required_paths) then
ctx.extern_required_paths <- path :: ctx.extern_required_paths
let s_expr_expr = Type.s_expr_kind
let s_expr_name e =
s_type (print_context()) e.etype
let s_type_name t =
s_type (print_context()) t
let rec is_uncertain_type t =
match follow t with
| TInst (c, _) -> c.cl_interface
| TMono _ -> true
| TAnon a ->
(match !(a.a_status) with
| Statics _
| EnumStatics _ -> false
| _ -> true)
| TDynamic _ -> true
| _ -> false
let is_uncertain_expr e =
is_uncertain_type e.etype
let rec is_anonym_type t =
match follow t with
| TAnon a ->
(match !(a.a_status) with
| Statics _
| EnumStatics _ -> false
| _ -> true)
| TDynamic _ -> true
| _ -> false
let is_anonym_expr e = is_anonym_type e.etype
let rec is_unknown_type t =
match follow t with
| TMono r ->
(match !r with
| None -> true
| Some t -> is_unknown_type t)
| _ -> false
let is_unknown_expr e = is_unknown_type e.etype
let rec is_string_type t =
match follow t with
| TInst ({cl_path = ([], "String")}, _) -> true
| TAnon a ->
(match !(a.a_status) with
| Statics ({cl_path = ([], "String")}) -> true
| _ -> false)
| _ -> false
let is_string_expr e = is_string_type e.etype
let spr ctx s = Buffer.add_string ctx.buf s
let print ctx = Printf.kprintf (fun s -> Buffer.add_string ctx.buf s)
(*--php-prefix - added by skial bainn*)
let prefix_class com name =
match com.php_prefix with
| Some prefix_class (* when not (String.length name <= 2 || String.sub name 0 2 = "__") *) ->
prefix_class ^ name
| _ ->
name
let prefix_init_replace com code =
let r = Str.regexp "php_Boot" in
Str.global_replace r ("php_" ^ (prefix_class com "Boot")) code
let s_path ctx path isextern p =
if isextern then begin
register_extern_required_path ctx path;
snd path
end else begin
(match path with
(*--php-prefix*)
| ([],"List") -> (prefix_class ctx.com "HList")
(*--php-prefix*)
| ([],name) -> (prefix_class ctx.com name)
| (pack,name) ->
(try
(match Hashtbl.find ctx.imports name with
| [p] when p = pack ->
()
| packs ->
if not (List.mem pack packs) then Hashtbl.replace ctx.imports name (pack :: packs))
with Not_found ->
Hashtbl.add ctx.imports name [pack]);
(*--php-prefix*)
String.concat "_" pack ^ "_" ^ (prefix_class ctx.com name))
end
let s_path_haxe path =
match fst path, snd path with
| [], s -> s
| el, s -> String.concat "." el ^ "." ^ s
let s_ident n =
let suf = "h" in
(*
haxe reserved words that match php ones: break, case, class, continue, default, do, else, extends, for, function, if, new, return, static, switch, var, while, interface, implements, public, private, try, catch, throw
*)
(* PHP only (for future use): cfunction, old_function *)
match String.lowercase n with
| "and" | "or" | "xor" | "__file__" | "exception" | "__line__" | "array"
| "as" | "const" | "declare" | "die" | "echo"| "elseif" | "empty"
| "enddeclare" | "endfor" | "endforeach" | "endif" | "endswitch"
| "endwhile" | "eval" | "exit" | "foreach"| "global" | "include"
| "include_once" | "isset" | "list" | "namespace" | "print" | "require" | "require_once"
| "unset" | "use" | "__function__" | "__class__" | "__method__" | "final"
| "php_user_filter" | "protected" | "abstract" | "__set" | "__get" | "__call"
| "clone" -> suf ^ n
| _ -> n
let s_ident_local n =
let suf = "h" in
match String.lowercase n with
| "globals" | "_server" | "_get" | "_post" | "_cookie" | "_files"
| "_env" | "_request" | "_session" -> suf ^ n
| _ -> n
let create_directory com ldir =
let atm_path = ref (String.create 0) in
atm_path := com.file;
if not (Sys.file_exists com.file) then (Unix.mkdir com.file 0o755);
(List.iter (fun p -> atm_path := !atm_path ^ "/" ^ p; if not (Sys.file_exists !atm_path) then (Unix.mkdir !atm_path 0o755);) ldir)
let write_resource dir name data =
let i = ref 0 in
String.iter (fun c ->
if c = '\\' || c = '/' || c = ':' || c = '*' || c = '?' || c = '"' || c = '<' || c = '>' || c = '|' then String.blit "_" 0 name !i 1;
incr i
) name;
let rdir = dir ^ "/res" in
if not (Sys.file_exists dir) then Unix.mkdir dir 0o755;
if not (Sys.file_exists rdir) then Unix.mkdir rdir 0o755;
let ch = open_out_bin (rdir ^ "/" ^ name) in
output_string ch data;
close_out ch
let stack_init com use_add =
Codegen.stack_context_init com "GLOBALS['%s']" "GLOBALS['%e']" "»spos" "»tmp" use_add null_pos
let init com cwd path def_type =
let rec create acc = function
| [] -> ()
| d :: l ->
let pdir = String.concat "/" (List.rev (d :: acc)) in
if not (Sys.file_exists pdir) then Unix.mkdir pdir 0o755;
create (d :: acc) l
in
let dir = if cwd <> "" then com.file :: (cwd :: fst path) else com.file :: fst path; in
create [] dir;
let filename path =
prefix_class com (match path with
| [], "List" -> "HList";
| _, s -> s) in
(*--php-prefix*)
let ch = open_out_bin (String.concat "/" dir ^ "/" ^ (filename path) ^ (if def_type = 0 then ".class" else if def_type = 1 then ".enum" else if def_type = 2 then ".interface" else ".extern") ^ ".php") in
let imports = Hashtbl.create 0 in
Hashtbl.add imports (snd path) [fst path];
{
com = com;
stack = stack_init com false;
tabs = "";
ch = ch;
path = path;
buf = Buffer.create (1 lsl 14);
in_value = None;
in_loop = false;
in_instance_method = false;
imports = imports;
extern_required_paths = [];
extern_classes_with_init = [];
curclass = null_class;
curmethod = "";
locals = PMap.empty;
inv_locals = PMap.empty;
local_types = [];
inits = [];
constructor_block = false;
dynamic_methods = [];
all_dynamic_methods = [];
is_call = false;
cwd = cwd;
inline_methods = [];
nested_loops = 0;
inline_index = 0;
in_block = false;
lib_path = match com.php_lib with None -> "lib" | Some s -> s;
}
let unsupported msg p = error ("This expression cannot be generated to PHP: " ^ msg) p
let newline ctx =
match Buffer.nth ctx.buf (Buffer.length ctx.buf - 1) with
| '}' | '{' | ':' | ' ' -> print ctx "\n%s" ctx.tabs
| _ -> print ctx ";\n%s" ctx.tabs
let rec concat ctx s f = function
| [] -> ()
| [x] -> f x
| x :: l ->
f x;
spr ctx s;
concat ctx s f l
let open_block ctx =
let oldt = ctx.tabs in
ctx.tabs <- "\t" ^ ctx.tabs;
(fun() -> ctx.tabs <- oldt)
let parent e =
match e.eexpr with
| TParenthesis _ -> e
| _ -> mk (TParenthesis e) e.etype e.epos
let inc_extern_path ctx path =
let rec slashes n =
if n = 0 then "" else ("../" ^ slashes (n-1))
in
let pre = if ctx.cwd = "" then ctx.lib_path ^ "/" else "" in
match path with
| ([],name) ->
pre ^ (slashes (List.length (fst ctx.path))) ^ (prefix_class ctx.com name) ^ ".extern.php"
| (pack,name) ->
pre ^ (slashes (List.length (fst ctx.path))) ^ String.concat "/" pack ^ "/" ^ (prefix_class ctx.com name) ^ ".extern.php"
let close ctx =
output_string ctx.ch "<?php\n";
List.iter (fun path ->
if path <> ctx.path then output_string ctx.ch ("require_once dirname(__FILE__).'/" ^ (inc_extern_path ctx path) ^ "';\n");
) (List.rev ctx.extern_required_paths);
output_string ctx.ch "\n";
output_string ctx.ch (Buffer.contents ctx.buf);
close_out ctx.ch
let save_locals ctx =
let old = ctx.locals in
let old_inv = ctx.inv_locals in
(fun() -> ctx.locals <- old; ctx.inv_locals <- old_inv)
let define_local ctx l =
let rec loop n =
let name = (if n = 1 then s_ident_local l else s_ident_local (l ^ string_of_int n)) in
if PMap.mem name ctx.inv_locals then
loop (n+1)
else begin
ctx.locals <- PMap.add l name ctx.locals;
ctx.inv_locals <- PMap.add name l ctx.inv_locals;
name
end
in
loop 1
let this ctx =
if ctx.in_value <> None then "$»this" else "$this"
let escape_bin s =
let b = Buffer.create 0 in
for i = 0 to String.length s - 1 do
match Char.code (String.unsafe_get s i) with
| c when c = Char.code('\\') or c = Char.code('"') or c = Char.code('$') ->
Buffer.add_string b "\\";
Buffer.add_char b (Char.chr c)
| c when c < 32 ->
Buffer.add_string b (Printf.sprintf "\\x%.2X" c)
| c ->
Buffer.add_char b (Char.chr c)
done;
Buffer.contents b
let gen_constant ctx p = function
| TInt i -> print ctx "%ld" i
| TFloat s -> spr ctx s
| TString s ->
print ctx "\"%s\"" (escape_bin s)
| TBool b -> spr ctx (if b then "true" else "false")
| TNull -> spr ctx "null"
| TThis -> spr ctx (this ctx)
| TSuper -> spr ctx "ERROR /* unexpected call to super in gen_constant */"
let s_funarg ctx arg t p c =
let byref = if (String.length arg > 7 && String.sub arg 0 7 = "byref__") then "&" else "" in
print ctx "%s$%s" byref (s_ident_local arg)
let is_in_dynamic_methods ctx e s =
List.exists (fun dm ->
(* TODO: I agree, this is a mess ... but after hours of trials and errors I gave up; maybe in a calmer day *)
((String.concat "." ((fst dm.mpath) @ ["#" ^ (snd dm.mpath)])) ^ "." ^ dm.mname) = (s_type_name e.etype ^ "." ^ s)
) ctx.all_dynamic_methods
let is_dynamic_method f =
(match f.cf_kind with
| Var _ -> true
| Method MethDynamic -> true
| _ -> false)
let fun_block ctx f p =
let e = (match f.tf_expr with { eexpr = TBlock [{ eexpr = TBlock _ } as e] } -> e | e -> e) in
let e = List.fold_left (fun e (v,c) ->
match c with
| None | Some TNull -> e
| Some c -> Codegen.concat (Codegen.set_default ctx.com v c p) e
) e f.tf_args in
if ctx.com.debug then begin
Codegen.stack_block ctx.stack ctx.curclass ctx.curmethod e
end else
mk_block e
let rec gen_array_args ctx lst =
match lst with
| [] -> ()
| h :: t ->
spr ctx "[";
gen_value ctx h;
spr ctx "]";
gen_array_args ctx t
and gen_call ctx e el =
let rec genargs lst =
(match lst with
| [] -> ()
| h :: [] ->
spr ctx " = ";
gen_value ctx h;
| h :: t ->
spr ctx "[";
gen_value ctx h;
spr ctx "]";
genargs t)
in
match e.eexpr , el with
| TConst TSuper , params ->
(match ctx.curclass.cl_super with
| None -> assert false
| Some (c,_) ->
spr ctx "parent::__construct(";
concat ctx "," (gen_value ctx) params;
spr ctx ")";
);
| TField ({ eexpr = TConst TSuper },name) , params ->
(match ctx.curclass.cl_super with
| None -> assert false
| Some (c,_) ->
print ctx "parent::%s(" (s_ident name);
concat ctx "," (gen_value ctx) params;
spr ctx ")";
);
| TLocal { v_name = "__set__" }, { eexpr = TConst (TString code) } :: el ->
print ctx "$%s" code;
genargs el;
| TLocal { v_name = "__set__" }, e :: el ->
gen_value ctx e;
genargs el;
| TLocal { v_name = "__setfield__" }, e :: (f :: el) ->
gen_value ctx e;
spr ctx "->{";
gen_value ctx f;
spr ctx "}";
genargs el;
| TLocal { v_name = "__field__" }, e :: ({ eexpr = TConst (TString code) } :: el) ->
gen_value ctx e;
spr ctx "->";
spr ctx code;
gen_array_args ctx el;
| TLocal { v_name = "__field__" }, e :: (f :: el) ->
gen_value ctx e;
spr ctx "->";
gen_value ctx f;
gen_array_args ctx el;
| TLocal { v_name = "__prefix__" }, [] ->
(match ctx.com.php_prefix with
| Some prefix ->
print ctx "\"%s\"" prefix
| None ->
spr ctx "null")
| TLocal { v_name = "__var__" }, { eexpr = TConst (TString code) } :: el ->
print ctx "$%s" code;
gen_array_args ctx el;
| TLocal { v_name = "__var__" }, e :: el ->
gen_value ctx e;
gen_array_args ctx el;
| TLocal { v_name = "__call__" }, { eexpr = TConst (TString code) } :: el ->
spr ctx code;
spr ctx "(";
concat ctx ", " (gen_value ctx) el;
spr ctx ")";
| TLocal { v_name = "__php__" }, [{ eexpr = TConst (TString code) }] ->
(*--php-prefix*)
spr ctx (prefix_init_replace ctx.com code)
| TLocal { v_name = "__instanceof__" }, [e1;{ eexpr = TConst (TString t) }] ->
gen_value ctx e1;
print ctx " instanceof %s" t;
| TLocal { v_name = "__physeq__" }, [e1;e2] ->
spr ctx "(";
gen_value ctx e1;
spr ctx " === ";
gen_value ctx e2;
spr ctx ")"
| TLocal _, []
| TFunction _, []
| TCall _, []
| TParenthesis _, []
| TBlock _, [] ->
ctx.is_call <- true;
spr ctx "call_user_func(";
gen_value ctx e;
ctx.is_call <- false;
spr ctx ")";
| TLocal _, el
| TFunction _, el
| TCall _, el
| TParenthesis _, el
| TBlock _, el ->
ctx.is_call <- true;
spr ctx "call_user_func_array(";
gen_value ctx e;
ctx.is_call <- false;
spr ctx ", array(";
concat ctx ", " (gen_value ctx) el;
spr ctx "))"
(*
| TCall (x,_), el when (match x.eexpr with | TLocal _ -> false | _ -> true) ->
ctx.is_call <- true;
spr ctx "call_user_func_array(";
gen_value ctx e;
ctx.is_call <- false;
spr ctx ", array(";
concat ctx ", " (gen_value ctx) el;
spr ctx "))"
*)
| _ ->
ctx.is_call <- true;
gen_value ctx e;
ctx.is_call <- false;
spr ctx "(";
concat ctx ", " (gen_value ctx) el;
spr ctx ")";
and could_be_string_var s =
s = "length"
and gen_uncertain_string_var ctx s e =
match s with
| "length" ->
spr ctx "_hx_len(";
gen_value ctx e;
spr ctx ")"
| _ ->
gen_field_access ctx true e s;
and gen_string_var ctx s e =
match s with
| "length" ->
spr ctx "strlen(";
gen_value ctx e;
spr ctx ")"
| _ ->
unsupported "gen_string_var " e.epos;
and gen_string_static_call ctx s e el =
match s with
| "fromCharCode" ->
spr ctx "chr(";
concat ctx ", " (gen_value ctx) el;
spr ctx ")";
| _ -> unsupported "gen_string_static_call " e.epos;
and could_be_string_call s =
s = "substr" || s = "charAt" || s = "charCodeAt" || s = "indexOf" ||
s = "lastIndexOf" || s = "split" || s = "toLowerCase" || s = "toString" || s = "toUpperCase"
and gen_string_call ctx s e el =
match s with
| "substr" ->
spr ctx "_hx_substr(";
gen_value ctx e;
spr ctx ", ";
concat ctx ", " (gen_value ctx) el;
spr ctx ")"
| "charAt" ->
spr ctx "_hx_char_at(";
gen_value ctx e;
spr ctx ", ";
concat ctx ", " (gen_value ctx) el;
spr ctx ")"
| "cca" ->
spr ctx "ord(substr(";
gen_value ctx e;
spr ctx ",";
concat ctx ", " (gen_value ctx) el;
spr ctx ",1))"
| "charCodeAt" ->
spr ctx "_hx_char_code_at(";
gen_value ctx e;
spr ctx ", ";
concat ctx ", " (gen_value ctx) el;
spr ctx ")"
| "indexOf" ->
spr ctx "_hx_index_of(";
gen_value ctx e;
spr ctx ", ";
concat ctx ", " (gen_value ctx) el;
spr ctx ")"
| "lastIndexOf" ->
spr ctx "_hx_last_index_of(";
gen_value ctx e;
spr ctx ", ";
concat ctx ", " (gen_value ctx) el;
spr ctx ")"
| "split" ->
spr ctx "_hx_explode(";
concat ctx ", " (gen_value ctx) el;
spr ctx ", ";
gen_value ctx e;
spr ctx ")"
| "toLowerCase" ->
spr ctx "strtolower(";
gen_value ctx e;
spr ctx ")"
| "toUpperCase" ->
spr ctx "strtoupper(";
gen_value ctx e;
spr ctx ")"
| "toString" ->
gen_value ctx e;
| _ ->
unsupported "gen_string_call" e.epos;
and gen_uncertain_string_call ctx s e el =
spr ctx "_hx_string_call(";
gen_value ctx e;
print ctx ", \"%s\", array(" s;
concat ctx ", " (gen_value ctx) el;
spr ctx "))"
and gen_field_op ctx e =
match e.eexpr with
| TField (f,s) ->
(match follow e.etype with
| TFun _ ->
gen_field_access ctx true f s
| _ ->
gen_value_op ctx e)
| _ ->
gen_value_op ctx e
and gen_value_op ctx e =
match e.eexpr with
| TBinop (op,_,_) when op = Ast.OpAnd || op = Ast.OpOr || op = Ast.OpXor ->
gen_value ctx e;
| _ ->
gen_value ctx e
and is_static t =
match follow t with
| TAnon a -> (match !(a.a_status) with
| Statics c -> true
| _ -> false)
| _ -> false
and gen_member_access ctx isvar e s =
match follow e.etype with
| TAnon a ->
(match !(a.a_status) with
| EnumStatics _
| Statics _ -> print ctx "::%s%s" (if isvar then "$" else "") (s_ident s)
| _ -> print ctx "->%s" (s_ident s))
| _ -> print ctx "->%s" (s_ident s)
and gen_field_access ctx isvar e s =
match e.eexpr with
| TTypeExpr t ->
spr ctx (s_path ctx (t_path t) false e.epos);
gen_member_access ctx isvar e s
| TLocal _ ->
gen_expr ctx e;
print ctx "->%s" (s_ident s)
| TArray (e1,e2) ->
spr ctx "_hx_array_get(";
gen_value ctx e1;
spr ctx ", ";
gen_value ctx e2;
spr ctx ")";
gen_member_access ctx isvar e s
| TBlock _
| TParenthesis _
| TObjectDecl _
| TArrayDecl _
| TNew _ ->
spr ctx "_hx_deref(";
ctx.is_call <- false;
gen_value ctx e;
spr ctx ")";
gen_member_access ctx isvar e s
| _ ->
gen_expr ctx e;
gen_member_access ctx isvar e s
and gen_dynamic_function ctx isstatic name f params p =
let old = ctx.in_value in
let old_l = ctx.locals in
let old_li = ctx.inv_locals in
let old_t = ctx.local_types in
ctx.in_value <- None;
ctx.local_types <- List.map snd params @ ctx.local_types;
let byref = if (String.length name > 9 && String.sub name 0 9 = "__byref__") then "&" else "" in
print ctx "function %s%s(" byref name;
concat ctx ", " (fun (v,c) ->
let arg = define_local ctx v.v_name in
s_funarg ctx arg v.v_type p c;
) f.tf_args;
spr ctx ") {";
if (List.length f.tf_args) > 0 then begin
if isstatic then
print ctx " return call_user_func_array(self::$%s, array(" name
else
print ctx " return call_user_func_array($this->%s, array(" name;
concat ctx ", " (fun (v,_) ->
spr ctx ("$" ^ v.v_name)
) f.tf_args;
print ctx ")); }";
end else if isstatic then
print ctx " return call_user_func(self::$%s); }" name
else
print ctx " return call_user_func($this->%s); }" name;
newline ctx;
if isstatic then
print ctx "public static $%s = null" name
else
print ctx "public $%s = null" name;
ctx.in_value <- old;
ctx.locals <- old_l;
ctx.inv_locals <- old_li;
ctx.local_types <- old_t
and gen_function ctx name f params p =
let old = ctx.in_value in
let old_l = ctx.locals in
let old_li = ctx.inv_locals in
let old_t = ctx.local_types in
ctx.in_value <- None;
ctx.local_types <- List.map snd params @ ctx.local_types;
let byref = if (String.length name > 9 && String.sub name 0 9 = "__byref__") then "&" else "" in
print ctx "function %s%s(" byref name;
concat ctx ", " (fun (v,o) ->
let arg = define_local ctx v.v_name in
s_funarg ctx arg v.v_type p o;
) f.tf_args;
print ctx ") ";
gen_expr ctx (fun_block ctx f p);
ctx.in_value <- old;
ctx.locals <- old_l;
ctx.inv_locals <- old_li;
ctx.local_types <- old_t
and gen_inline_function ctx f hasthis p =
ctx.nested_loops <- ctx.nested_loops - 1;
let old = ctx.in_value in
let old_l = ctx.locals in
let old_li = ctx.inv_locals in
let old_t = ctx.local_types in
ctx.in_value <- Some "closure";
let args a = List.map (fun (v,_) -> v.v_name) a in
let arguments = ref [] in
if hasthis then begin arguments := "this" :: !arguments end;
PMap.iter (fun n _ -> arguments := !arguments @ [n]) old_li;
spr ctx "array(new _hx_lambda(array(";
let c = ref 0 in
List.iter (fun a ->
if !c > 0 then spr ctx ", ";
incr c;
print ctx "&$%s" a;
) (remove_internals !arguments);
spr ctx "), \"";
spr ctx (inline_function ctx (args f.tf_args) hasthis (fun_block ctx f p));
print ctx "\"), 'execute')";
ctx.in_value <- old;
ctx.locals <- old_l;
ctx.inv_locals <- old_li;
ctx.local_types <- old_t;
ctx.nested_loops <- ctx.nested_loops + 1;
and unset_locals ctx old_l =
let lst = ref [] in
PMap.iter (fun n _ ->
if not (PMap.exists n old_l) then
lst := ["$" ^ n] @ !lst;
) ctx.inv_locals;
if (List.length !lst) > 0 then begin
newline ctx;
spr ctx "unset(";
concat ctx "," (fun (s) -> spr ctx s; ) !lst;
spr ctx ")"
end
and gen_while_expr ctx e =
let old_loop = ctx.in_loop in
ctx.in_loop <- true;
let old_nested_loops = ctx.nested_loops in
ctx.nested_loops <- 1;
let old_l = ctx.inv_locals in
let b = save_locals ctx in
(match e.eexpr with
| TBlock (el) ->
List.iter (fun e -> newline ctx; gen_expr ctx e) el;
| _ ->
newline ctx;
gen_expr ctx e);
unset_locals ctx old_l;
b();
ctx.nested_loops <- old_nested_loops;
ctx.in_loop <- old_loop
and gen_expr ctx e =
let in_block = ctx.in_block in
ctx.in_block <- false;
let restore_in_block ctx inb =
if inb then ctx.in_block <- true
in
match e.eexpr with
| TConst c ->
gen_constant ctx e.epos c
| TLocal v ->
spr ctx ("$" ^ (try PMap.find v.v_name ctx.locals with Not_found -> (s_ident_local v.v_name)))
| TEnumField (en,s) ->
(match (try PMap.find s en.e_constrs with Not_found -> error ("Unknown local " ^ s) e.epos).ef_type with
| TFun (args,_) -> print ctx "%s::%s" (s_path ctx en.e_path en.e_extern e.epos) (s_ident s)
| _ -> print ctx "%s::$%s" (s_path ctx en.e_path en.e_extern e.epos) (s_ident s))
| TArray (e1,e2) ->
(match e1.eexpr with
| TCall _
| TArrayDecl _ ->
spr ctx "_hx_array_get(";
gen_value ctx e1;
spr ctx ", ";
gen_value ctx e2;
spr ctx ")";
| _ ->
gen_value ctx e1;
spr ctx "[";
gen_value ctx e2;
spr ctx "]");
| TBinop (op,e1,e2) ->
(* these operators are non-assoc in php, let let's make sure to separate them with parenthesises *)
let non_assoc = function
| (Ast.OpEq | Ast.OpNotEq | Ast.OpGt | Ast.OpGte | Ast.OpLt | Ast.OpLte) -> true
| _ -> false
in
(match e1.eexpr with
| TBinop (op2,_,_) when non_assoc op && non_assoc op2 ->
gen_expr ctx { e with eexpr = TBinop (op,mk (TParenthesis e1) e1.etype e1.epos,e2) }
| _ ->
let leftside e =
(match e.eexpr with
| TArray(te1, te2) ->
gen_value ctx te1;
spr ctx "->»a[";
gen_value ctx te2;
spr ctx "]";
| _ ->
gen_field_op ctx e1;) in
let leftsidec e =
(match e.eexpr with
| TArray(te1, te2) ->
gen_value ctx te1;
spr ctx "->»a[";
gen_value ctx te2;
spr ctx "]";
| TField (e1,s) ->
gen_field_access ctx true e1 s
| _ ->
gen_field_op ctx e1;) in
let leftsidef e =
(match e.eexpr with
| TField (e1,s) ->
gen_field_access ctx true e1 s;
| _ ->
gen_field_op ctx e1;
) in
(match op with
| Ast.OpAssign ->
(match e1.eexpr with
| TArray(te1, te2) when (match te1.eexpr with TCall _ -> true | _ -> false) ->
spr ctx "_hx_array_assign(";
gen_value ctx te1;
spr ctx ", ";
gen_value ctx te2;
spr ctx ", ";
gen_value_op ctx e2;
spr ctx ")";
| _ ->
leftsidef e1;
spr ctx " = ";
gen_value_op ctx e2;
)
| Ast.OpAssignOp(Ast.OpAdd) when (is_uncertain_expr e1 && is_uncertain_expr e2) ->
leftside e1;
spr ctx " = ";
spr ctx "_hx_add(";
gen_value_op ctx e1;
spr ctx ", ";
gen_value_op ctx e2;
spr ctx ")";
| Ast.OpAssignOp(Ast.OpAdd) when (is_string_expr e1 || is_string_expr e2) ->
leftside e1;
spr ctx " .= ";
gen_value_op ctx e2;
| Ast.OpAssignOp(Ast.OpShl) ->
leftside e1;
spr ctx " <<= ";
gen_value_op ctx e2;
| Ast.OpAssignOp(Ast.OpUShr) ->
leftside e1;
spr ctx " = ";
spr ctx "_hx_shift_right(";
gen_value_op ctx e1;
spr ctx ", ";
gen_value_op ctx e2;
spr ctx ")";
| Ast.OpAssignOp(_) ->
leftsidec e1;
print ctx " %s " (Ast.s_binop op);
gen_value_op ctx e2;
| Ast.OpAdd when (is_uncertain_expr e1 && is_uncertain_expr e2) ->
spr ctx "_hx_add(";
gen_value_op ctx e1;
spr ctx ", ";
gen_value_op ctx e2;
spr ctx ")";
| Ast.OpAdd when (is_string_expr e1 || is_string_expr e2) ->
gen_value_op ctx e1;
spr ctx " . ";
gen_value_op ctx e2;
| Ast.OpShl ->
gen_value_op ctx e1;
spr ctx " << ";
gen_value_op ctx e2;
| Ast.OpUShr ->
spr ctx "_hx_shift_right(";
gen_value_op ctx e1;
spr ctx ", ";