compile: store instance size in class table

[nit.git] / src / compiling / compiling_global.nit

diff --git a/src/compiling/compiling_global.nit b/src/compiling/compiling_global.nit
index bdc7e55..2a686f2 100644 (file)
--- a/src/compiling/compiling_global.nit
+++ b/src/compiling/compiling_global.nit
@@ -177,7 +177,9 @@ redef class MMModule
                var itab = new Array[TableElt]
 
                ctab.add(new TableEltClassSelfId)
+               ctab.add(new TableEltClassObjectSize)
                itab.add(new TableEltVftPointer)
+               itab.add(new TableEltObjectId)
 
                var pclassid = -1
                var classid = 3
@@ -769,6 +771,39 @@ special TableElt
        end
 end
 
+
+# The element that represent the Object Size
+class TableEltClassObjectSize
+special TableElt
+       redef fun is_related_to(c) do return true
+       redef fun compile_to_c(v, c)
+       do
+        var nb = 0
+        var ga = v.global_analysis
+               if c.name == "NativeArray".to_symbol then
+                       nb = -1
+               else
+                       var cc = ga.compiled_classes[c.global]
+                       var itab = cc.instance_table
+                       for e in itab do
+                               nb += 1
+                       end
+               end
+               return "{nb} /* {ga.color(self)}: Object size (-1 if a NativeArray)*/"
+       end
+end
+
+# The element that represent the object id
+class TableEltObjectId
+special TableElt
+       redef fun is_related_to(c) do return true
+       redef fun compile_to_c(v, c)
+       do
+               var ga = v.global_analysis
+               return "/* {ga.color(self)}: Object_id */"
+       end
+end
+
 # The element that
 class TableEltVftPointer
 special TableElt
@@ -819,12 +854,14 @@ redef class MMLocalClass
                v.add_decl("")
                var pi = primitive_info
                v.add_decl("extern const classtable_elt_t VFT_{name}[];")
-               if pi == null then
+               if name == "NativeArray".to_symbol then
+                       v.add_decl("val_t NEW_NativeArray(size_t length, size_t size);")
+               else if pi == null then
                        # v.add_decl("val_t NEW_{name}(void);")
                else if not pi.tagged then
                        var t = pi.cname
                        var tbox = "struct TBOX_{name}"
-                       v.add_decl("{tbox} \{ const classtable_elt_t * vft; {t} val;};")
+                       v.add_decl("{tbox} \{ const classtable_elt_t * vft; bigint object_id; {t} val;};")
                        v.add_decl("val_t BOX_{name}({t} val);")
                        v.add_decl("#define UNBOX_{name}(x) ((({tbox} *)(VAL2OBJ(x)))->val)")
                end
@@ -864,7 +901,19 @@ redef class MMLocalClass
                end
 
                var pi = primitive_info
-               if pi == null then
+               if name == "NativeArray".to_symbol then
+                       v.add_instr("val_t NEW_NativeArray(size_t length, size_t size) \{")
+                       v.indent
+                       v.add_instr("Nit_NativeArray array;")
+                       v.add_instr("array = (Nit_NativeArray)alloc(sizeof(struct Nit_NativeArray) + ((length - 1) * size));")
+                       v.add_instr("array->vft = (classtable_elt_t*)VFT_{name};")
+                       v.add_instr("array->object_id = object_id_counter;")
+                       v.add_instr("object_id_counter = object_id_counter + 1;")
+                       v.add_instr("array->size = length;")
+                       v.add_instr("return OBJ2VAL(array);")
+                       v.unindent
+                       v.add_instr("}")
+               else if pi == null then
                        do
                                var iself = new IRegister(get_type)
                                var iselfa = [iself]
@@ -881,7 +930,7 @@ redef class MMLocalClass
                                                var ir = p.iroutine
                                                if ir == null then continue
                                                # FIXME: Not compatible with sep compilation
-                                               var e = icb.inline_routine(ir, iselfa).as(not null)
+                                               var e = icb.inline_routine(ir, iselfa, null).as(not null)
                                                icb.stmt(new IAttrWrite(p, iself, e))
                                        end
                                end
@@ -893,6 +942,8 @@ redef class MMLocalClass
                                v.add_decl("obj_t obj;")
                                v.add_instr("obj = alloc(sizeof(val_t) * {itab.length});")
                                v.add_instr("obj->vft = (classtable_elt_t*)VFT_{name};")
+                               v.add_instr("obj[1].object_id = object_id_counter;")
+                               v.add_instr("object_id_counter = object_id_counter + 1;")
                                var r = iroutine.compile_to_c(v, cname, args).as(not null)
                                v.add_instr("return {r};")
                                ctx_old.append(v.ctx)
@@ -969,6 +1020,8 @@ redef class MMLocalClass
                        v.add_instr("{tbox} *box = ({tbox}*)alloc(sizeof({tbox}));")
                        v.add_instr("box->vft = VFT_{name};")
                        v.add_instr("box->val = val;")
+                       v.add_instr("box->object_id = object_id_counter;")
+                       v.add_instr("object_id_counter = object_id_counter + 1;")
                        v.add_instr("return OBJ2VAL(box);")
                        v.unindent
                        v.add_instr("}")