Merge: Callref compilers
[nit.git] / src / compiler / separate_erasure_compiler.nit
index f4b9824..8e0a0b2 100644 (file)
@@ -199,14 +199,12 @@ class SeparateErasureCompiler
                var mtype = mclass.intro.bound_mtype
                var c_name = mclass.c_name
 
-               var vft = self.method_tables[mclass]
-               var attrs = self.attr_tables[mclass]
                var class_table = self.class_tables[mclass]
                var v = self.new_visitor
 
                var rta = runtime_type_analysis
                var is_dead = false # mclass.kind == abstract_kind or mclass.kind == interface_kind
-               if not is_dead and rta != null and not rta.live_classes.has(mclass) and mtype.ctype == "val*" and mclass.name != "NativeArray" then
+               if not is_dead and rta != null and not rta.live_classes.has(mclass) and not mtype.is_c_primitive and mclass.name != "NativeArray" then
                        is_dead = true
                end
 
@@ -230,7 +228,8 @@ class SeparateErasureCompiler
                        end
                        v.add_decl("&type_table_{c_name},")
                        v.add_decl("\{")
-                       for i in [0 .. vft.length[ do
+                       var vft = self.method_tables.get_or_null(mclass)
+                       if vft != null then for i in [0 .. vft.length[ do
                                var mpropdef = vft[i]
                                if mpropdef == null then
                                        v.add_decl("NULL, /* empty */")
@@ -264,7 +263,7 @@ class SeparateErasureCompiler
                v.add_decl("\}")
                v.add_decl("\};")
 
-               if mtype.ctype != "val*" or mtype.mclass.name == "Pointer" then
+               if mtype.is_c_primitive or mtype.mclass.name == "Pointer" then
                        #Build instance struct
                        self.header.add_decl("struct instance_{c_name} \{")
                        self.header.add_decl("const struct class *class;")
@@ -274,7 +273,7 @@ class SeparateErasureCompiler
                        #Build BOX
                        self.provide_declaration("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
                        v.add_decl("/* allocate {mtype} */")
-                       v.add_decl("val* BOX_{mtype.c_name}({mtype.ctype} value) \{")
+                       v.add_decl("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
                        v.add("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
                        v.require_declaration("class_{c_name}")
                        v.add("res->class = &class_{c_name};")
@@ -323,7 +322,27 @@ class SeparateErasureCompiler
                        v.add("return (val*){res};")
                        v.add("\}")
                        return
-               else if mtype.mclass.kind == extern_kind and mtype.mclass.name != "NativeString" then
+                else if mclass.name == "RoutineRef" then
+                        self.header.add_decl("struct instance_{c_name} \{")
+                        self.header.add_decl("const struct class *class;")
+                        self.header.add_decl("val* recv;")
+                        self.header.add_decl("nitmethod_t method;")
+                        self.header.add_decl("\};")
+
+                        self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(val* recv, nitmethod_t method, const struct class* class);")
+                        v.add_decl("/* allocate {mtype} */")
+                        v.add_decl("{mtype.ctype} NEW_{c_name}(val* recv, nitmethod_t method, const struct class* class)\{")
+                        var res = v.get_name("self")
+                        v.add_decl("struct instance_{c_name} *{res};")
+                        var alloc = v.nit_alloc("sizeof(struct instance_{c_name})", mclass.full_name)
+                        v.add("{res} = {alloc};")
+                        v.add("{res}->class = class;")
+                        v.add("{res}->recv = recv;")
+                        v.add("{res}->method = method;")
+                        v.add("return (val*){res};")
+                        v.add("\}")
+                        return
+               else if mtype.mclass.kind == extern_kind and mtype.mclass.name != "CString" then
                        var pointer_type = mainmodule.pointer_type
 
                        self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}();")
@@ -355,11 +374,18 @@ class SeparateErasureCompiler
 
                        var res = v.new_named_var(mtype, "self")
                        res.is_exact = true
-                       v.add("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
+                       var attrs = self.attr_tables.get_or_null(mclass)
+                       if attrs == null then
+                               v.add("{res} = nit_alloc(sizeof(struct instance));")
+                       else
+                               v.add("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
+                       end
                        v.require_declaration("class_{c_name}")
                        v.add("{res}->class = &class_{c_name};")
-                       self.generate_init_attr(v, res, mtype)
-                       v.set_finalizer res
+                       if attrs != null then
+                               self.generate_init_attr(v, res, mtype)
+                               v.set_finalizer res
+                       end
                        v.add("return {res};")
                end
                v.add("\}")
@@ -529,7 +555,7 @@ class SeparateErasureCompilerVisitor
                end
 
                var class_ptr
-               if value.mtype.ctype == "val*" then
+               if not value.mtype.is_c_primitive then
                        class_ptr = "{value}->class->"
                else
                        var mclass = value.mtype.as(MClassType).mclass
@@ -548,7 +574,7 @@ class SeparateErasureCompilerVisitor
                else if mtype isa MVirtualType then
                        var recv = self.frame.arguments.first
                        var recv_ptr
-                       if recv.mtype.ctype == "val*" then
+                       if not recv.mtype.is_c_primitive then
                                recv_ptr = "{recv}->class->"
                        else
                                var mclass = recv.mtype.as(MClassType).mclass
@@ -597,7 +623,7 @@ class SeparateErasureCompilerVisitor
        redef fun unbox_extern(value, mtype)
        do
                if mtype isa MClassType and mtype.mclass.kind == extern_kind and
-                  mtype.mclass.name != "NativeString" then
+                  mtype.mclass.name != "CString" then
                        var pointer_type = compiler.mainmodule.pointer_type
                        var res = self.new_var_extern(mtype)
                        self.add "{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
@@ -610,7 +636,7 @@ class SeparateErasureCompilerVisitor
        redef fun box_extern(value, mtype)
        do
                if mtype isa MClassType and mtype.mclass.kind == extern_kind and
-                  mtype.mclass.name != "NativeString" then
+                  mtype.mclass.name != "CString" then
                        var valtype = compiler.mainmodule.pointer_type
                        var res = self.new_var(mtype)
                        if compiler.runtime_type_analysis != null and not compiler.runtime_type_analysis.live_types.has(value.mtype.as(MClassType)) then
@@ -632,7 +658,7 @@ class SeparateErasureCompilerVisitor
        do
                var res = self.get_name("var_class_name")
                self.add_decl("const char* {res};")
-               if value.mtype.ctype == "val*" then
+               if not value.mtype.is_c_primitive then
                        self.add "{res} = {value} == NULL ? \"null\" : {value}->class->name;"
                else
                        self.require_declaration("class_{value.mtype.c_name}")
@@ -643,19 +669,64 @@ class SeparateErasureCompilerVisitor
 
        redef fun native_array_instance(elttype, length)
        do
-               var nclass = self.get_class("NativeArray")
+               var nclass = mmodule.native_array_class
                var mtype = nclass.get_mtype([elttype])
                var res = self.new_var(mtype)
                res.is_exact = true
                self.require_declaration("NEW_{nclass.c_name}")
+               length = autobox(length, compiler.mainmodule.int_type)
                self.add("{res} = NEW_{nclass.c_name}({length});")
                return res
        end
 
-       redef fun calloc_array(ret_type, arguments)
-       do
-               var ret = ret_type.as(MClassType)
-               self.require_declaration("NEW_{ret.mclass.c_name}")
-               self.ret(self.new_expr("NEW_{ret.mclass.c_name}({arguments[1]})", ret_type))
-       end
+        redef fun routine_ref_instance(routine_type, recv, callsite)
+        do
+               var mmethoddef = callsite.mpropdef
+                #debug "ENTER ref_instance"
+                var mmethod = mmethoddef.mproperty
+                # routine_mclass is the specialized one, e.g: FunRef1, ProcRef2, etc..
+                var routine_mclass = routine_type.mclass
+
+                var nclasses = mmodule.model.get_mclasses_by_name("RoutineRef").as(not null)
+                var base_routine_mclass = nclasses.first
+
+                # All routine classes use the same `NEW` constructor.
+                # However, they have different declared `class` and `type` value.
+                self.require_declaration("NEW_{base_routine_mclass.c_name}")
+
+                var recv_class_cname = recv.mcasttype.as(MClassType).mclass.c_name
+                var my_recv = recv
+
+                if recv.mtype.is_c_primitive then
+                        my_recv = autobox(recv, mmodule.object_type)
+                end
+                var my_recv_mclass_type = my_recv.mtype.as(MClassType)
+
+                # The class of the concrete Routine must exist (e.g ProcRef0, FunRef0, etc.)
+                self.require_declaration("class_{routine_mclass.c_name}")
+
+                self.require_declaration(mmethoddef.c_name)
+
+                var thunk_function = mmethoddef.callref_thunk(my_recv_mclass_type)
+                var runtime_function = mmethoddef.virtual_runtime_function
+
+                var is_c_equiv = runtime_function.msignature.c_equiv(thunk_function.msignature)
+
+                var c_ref = thunk_function.c_ref
+                if is_c_equiv then
+                        var const_color = mmethoddef.mproperty.const_color
+                        c_ref = "{class_info(my_recv)}->vft[{const_color}]"
+                        self.require_declaration(const_color)
+                else
+                        self.require_declaration(thunk_function.c_name)
+                        compiler.thunk_todo(thunk_function)
+                end
+                compiler.thunk_todo(thunk_function)
+
+                # Each RoutineRef points to a receiver AND a callref_thunk
+                var res = self.new_expr("NEW_{base_routine_mclass.c_name}({my_recv}, (nitmethod_t){c_ref}, &class_{routine_mclass.c_name})", routine_type)
+                #debug "LEAVING ref_instance"
+                return res
+
+        end
 end