end
end
- var erasure_compiler_phase = new ErasureCompilerPhase(self, null)
+ var erasure_compiler_phase = new ErasureCompilerPhase(self, [contracts_phase])
end
class ErasureCompilerPhase
self.header.add_decl("typedef struct instance \{ const struct class *class; nitattribute_t attrs[1]; \} val; /* general C type representing a Nit instance. */")
end
- redef fun compile_class_to_c(mclass: MClass)
+ redef fun compile_class_if_universal(ccinfo, v)
do
- var mtype = mclass.intro.bound_mtype
+ var mclass = ccinfo.mclass
+ var mtype = ccinfo.mtype
var c_name = mclass.c_name
-
- 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 not mtype.is_c_primitive and mclass.name != "NativeArray" then
- is_dead = true
- end
-
- v.add_decl("/* runtime class {c_name} */")
-
- self.provide_declaration("class_{c_name}", "extern const struct class class_{c_name};")
- v.add_decl("extern const struct type_table type_table_{c_name};")
-
- # Build class vft
- v.add_decl("const struct class class_{c_name} = \{")
- v.add_decl("{class_ids[mclass]},")
- v.add_decl("\"{mclass.name}\", /* class_name_string */")
- v.add_decl("{self.box_kind_of(mclass)}, /* box_kind */")
- v.add_decl("{class_colors[mclass]},")
- if not is_dead then
- if build_class_vts_table(mclass) then
- v.require_declaration("vts_table_{c_name}")
- v.add_decl("&vts_table_{c_name},")
- else
- v.add_decl("NULL,")
- end
- v.add_decl("&type_table_{c_name},")
- v.add_decl("\{")
- 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 */")
- else
- assert mpropdef isa MMethodDef
- if rta != null and not rta.live_methoddefs.has(mpropdef) then
- v.add_decl("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
- continue
- end
- var rf = mpropdef.virtual_runtime_function
- v.require_declaration(rf.c_name)
- v.add_decl("(nitmethod_t){rf.c_name}, /* pointer to {mpropdef.full_name} */")
- end
- end
- v.add_decl("\}")
- end
- v.add_decl("\};")
-
- # Build class type table
-
- v.add_decl("const struct type_table type_table_{c_name} = \{")
- v.add_decl("{class_table.length},")
- v.add_decl("\{")
- for msuper in class_table do
- if msuper == null then
- v.add_decl("-1, /* empty */")
- else
- v.add_decl("{self.class_ids[msuper]}, /* {msuper} */")
- end
- end
- v.add_decl("\}")
- v.add_decl("\};")
+ var is_dead = ccinfo.is_dead
if mtype.is_c_primitive or mtype.mclass.name == "Pointer" then
#Build instance struct
v.add("return (val*)res;")
v.add("\}")
- if mtype.mclass.name != "Pointer" then return
+ if mtype.mclass.name != "Pointer" then return true
v = new_visitor
self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}();")
v.add("return {res};")
end
v.add("\}")
- return
+ return true
else if mclass.name == "NativeArray" then
#Build instance struct
self.header.add_decl("struct instance_{c_name} \{")
v.add("{res}->length = length;")
v.add("return (val*){res};")
v.add("\}")
- return
+ return true
+ 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 true
else if mtype.mclass.kind == extern_kind and mtype.mclass.name != "CString" then
var pointer_type = mainmodule.pointer_type
v.add("return {res};")
end
v.add("\}")
- return
+ return true
end
+ return false
+ end
+
+ redef fun compile_class_vft(ccinfo, v)
+ do
+ var mclass = ccinfo.mclass
+ var mtype = ccinfo.mtype
+ var c_name = mclass.c_name
+ var is_dead = ccinfo.is_dead
+ var rta = runtime_type_analysis
+
+ # Build class vft
+ self.provide_declaration("class_{c_name}", "extern const struct class class_{c_name};")
+
+ v.add_decl("const struct class class_{c_name} = \{")
+ v.add_decl("{class_ids[mclass]},")
+ v.add_decl("\"{mclass.name}\", /* class_name_string */")
+ v.add_decl("{self.box_kind_of(mclass)}, /* box_kind */")
+ v.add_decl("{class_colors[mclass]},")
+ if not is_dead then
+ if build_class_vts_table(mclass) then
+ v.require_declaration("vts_table_{c_name}")
+ v.add_decl("&vts_table_{c_name},")
+ else
+ v.add_decl("NULL,")
+ end
+ v.add_decl("&type_table_{c_name},")
+ v.add_decl("\{")
+ 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 */")
+ else
+ assert mpropdef isa MMethodDef
+ if rta != null and not rta.live_methoddefs.has(mpropdef) then
+ v.add_decl("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
+ continue
+ end
+ var rf = mpropdef.virtual_runtime_function
+ v.require_declaration(rf.c_name)
+ v.add_decl("(nitmethod_t){rf.c_name}, /* pointer to {mpropdef.full_name} */")
+ end
+ end
+ v.add_decl("\}")
+ end
+ v.add_decl("\};")
+ end
+
+ protected fun compile_class_type_table(ccinfo: ClassCompilationInfo, v: SeparateCompilerVisitor)
+ do
+ var mclass = ccinfo.mclass
+ var c_name = mclass.c_name
+ var class_table = self.class_tables[mclass]
+
+ # Build class type table
+ v.add_decl("const struct type_table type_table_{c_name} = \{")
+ v.add_decl("{class_table.length},")
+ v.add_decl("\{")
+ for msuper in class_table do
+ if msuper == null then
+ v.add_decl("-1, /* empty */")
+ else
+ v.add_decl("{self.class_ids[msuper]}, /* {msuper} */")
+ end
+ end
+ v.add_decl("\}")
+ v.add_decl("\};")
+ end
+
+ redef fun compile_default_new(ccinfo, v)
+ do
+ var mclass = ccinfo.mclass
+ var mtype = ccinfo.mtype
+ var c_name = mclass.c_name
+ var is_dead = ccinfo.is_dead
#Build NEW
self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(void);")
v.add("\}")
end
+ redef fun build_class_compilation_info(mclass)
+ do
+ var ccinfo = super
+ var mtype = ccinfo.mtype
+ 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 not mtype.is_c_primitive and mclass.name != "NativeArray" then
+ is_dead = true
+ end
+ ccinfo.is_dead = is_dead
+ return ccinfo
+ end
+
+ redef fun compile_class_to_c(mclass: MClass)
+ do
+ var ccinfo = build_class_compilation_info(mclass)
+ var v = new_visitor
+ v.add_decl("/* runtime class {mclass.c_name} */")
+ self.provide_declaration("class_{mclass.c_name}", "extern const struct class class_{mclass.c_name};")
+ v.add_decl("extern const struct type_table type_table_{mclass.c_name};")
+ self.compile_class_vft(ccinfo, v)
+ self.compile_class_type_table(ccinfo, v)
+ if not self.compile_class_if_universal(ccinfo, v) then
+ self.compile_default_new(ccinfo, v)
+ end
+ end
+
private fun build_class_vts_table(mclass: MClass): Bool do
if self.vt_tables[mclass].is_empty then return false
self.add("{res} = NEW_{nclass.c_name}({length});")
return res
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
nitlanguage / nit.git / blobdiff