compiler: rename `show_backtrace` as `fatal_exit`
[nit.git] / src / compiler / global_compiler.nit
index 2196071..a01e362 100644 (file)
@@ -59,6 +59,43 @@ redef class ModelBuilder
                self.toolcontext.info("*** GENERATING C ***", 1)
 
                var compiler = new GlobalCompiler(mainmodule, self, runtime_type_analysis)
+               compiler.do_compilation
+               compiler.display_stats
+
+               var time1 = get_time
+               self.toolcontext.info("*** END GENERATING C: {time1-time0} ***", 2)
+               write_and_make(compiler)
+       end
+end
+
+# Compiler that use global compilation and perform hard optimisations like:
+#   * customization
+#   * switch dispatch
+#   * inlining
+class GlobalCompiler
+       super AbstractCompiler
+
+       redef type VISITOR: GlobalCompilerVisitor
+
+       # The result of the RTA (used to know live types and methods)
+       var runtime_type_analysis: RapidTypeAnalysis
+
+       init
+       do
+               var file = new_file("{mainmodule.c_name}.nitgg")
+               self.header = new CodeWriter(file)
+               self.live_primitive_types = new Array[MClassType]
+               for t in runtime_type_analysis.live_types do
+                       if t.ctype != "val*" or t.mclass.name == "Pointer" then
+                               self.live_primitive_types.add(t)
+                       end
+               end
+       end
+
+       redef fun do_compilation
+       do
+               var compiler = self
+
                compiler.compile_header
 
                if mainmodule.model.get_mclasses_by_name("Pointer") != null then
@@ -89,43 +126,11 @@ redef class ModelBuilder
                # Compile until all runtime_functions are visited
                while not compiler.todos.is_empty do
                        var m = compiler.todos.shift
-                       self.toolcontext.info("Compile {m} ({compiler.seen.length-compiler.todos.length}/{compiler.seen.length})", 3)
+                       modelbuilder.toolcontext.info("Compile {m} ({compiler.seen.length-compiler.todos.length}/{compiler.seen.length})", 3)
                        m.compile_to_c(compiler)
                end
-               self.toolcontext.info("Total methods to compile to C: {compiler.seen.length}", 2)
-
-               compiler.display_stats
+               modelbuilder.toolcontext.info("Total methods to compile to C: {compiler.seen.length}", 2)
 
-               var time1 = get_time
-               self.toolcontext.info("*** END GENERATING C: {time1-time0} ***", 2)
-               write_and_make(compiler)
-       end
-end
-
-# Compiler that use global compilation and perform hard optimisations like:
-#   * customization
-#   * switch dispatch
-#   * inlining
-class GlobalCompiler
-       super AbstractCompiler
-
-       redef type VISITOR: GlobalCompilerVisitor
-
-       # The result of the RTA (used to know live types and methods)
-       var runtime_type_analysis: RapidTypeAnalysis
-
-       init(mainmodule: MModule, modelbuilder: ModelBuilder, runtime_type_analysis: RapidTypeAnalysis)
-       do
-               super(mainmodule, modelbuilder)
-               var file = new_file("{mainmodule.name}.nitgg")
-               self.header = new CodeWriter(file)
-               self.runtime_type_analysis = runtime_type_analysis
-               self.live_primitive_types = new Array[MClassType]
-               for t in runtime_type_analysis.live_types do
-                       if t.ctype != "val*" or t.mclass.name == "Pointer" then
-                               self.live_primitive_types.add(t)
-                       end
-               end
        end
 
        # Compile class names (for the class_name and output_class_name methods)
@@ -163,7 +168,7 @@ class GlobalCompiler
 
        # Subset of runtime_type_analysis.live_types that contains only primitive types
        # Used to implement the equal test
-       var live_primitive_types: Array[MClassType]
+       var live_primitive_types: Array[MClassType] is noinit
 
        # Add a new todo task
        fun todo(m: AbstractRuntimeFunction)
@@ -307,7 +312,7 @@ class GlobalCompilerVisitor
                        var res = self.new_var(mtype)
                        if not compiler.runtime_type_analysis.live_types.has(valtype) then
                                self.add("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
-                               self.add("PRINT_ERROR(\"Dead code executed!\\n\"); show_backtrace(1);")
+                               self.add("PRINT_ERROR(\"Dead code executed!\\n\"); fatal_exit(1);")
                                return res
                        end
                        self.add("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
@@ -318,7 +323,7 @@ class GlobalCompilerVisitor
                        # Bad things will appen!
                        var res = self.new_var(mtype)
                        self.add("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
-                       self.add("PRINT_ERROR(\"Cast error: Cannot cast %s to %s.\\n\", \"{value.mtype}\", \"{mtype}\"); show_backtrace(1);")
+                       self.add("PRINT_ERROR(\"Cast error: Cannot cast %s to %s.\\n\", \"{value.mtype}\", \"{mtype}\"); fatal_exit(1);")
                        return res
                end
        end
@@ -342,9 +347,9 @@ class GlobalCompilerVisitor
 
                var valtype = value.mtype.as(MClassType)
                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
+               if not compiler.runtime_type_analysis.live_types.has(value.mtype.as(MClassType)) then
                        self.add("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
-                       self.add("PRINT_ERROR(\"Dead code executed!\\n\"); show_backtrace(1);")
+                       self.add("PRINT_ERROR(\"Dead code executed!\\n\"); fatal_exit(1);")
                        return res
                end
                self.add("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
@@ -398,6 +403,7 @@ class GlobalCompilerVisitor
        redef fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable
        do
                var ret_type = self.get_class("NativeArray").get_mtype([elttype])
+               ret_type = anchor(ret_type).as(MClassType)
                return self.new_expr("NEW_{ret_type.c_name}({length})", ret_type)
        end
 
@@ -412,10 +418,7 @@ class GlobalCompilerVisitor
 
                var res: nullable RuntimeVariable
                var ret = m.intro.msignature.return_mtype
-               if m.is_new then
-                       ret = args.first.mtype
-                       res = self.new_var(ret)
-               else if ret == null then
+               if ret == null then
                        res = null
                else
                        ret = self.resolve_for(ret, args.first)
@@ -438,7 +441,7 @@ class GlobalCompilerVisitor
                if args.first.mcasttype isa MNullableType or args.first.mcasttype isa MNullType and consider_null then
                        # The reciever is potentially null, so we have to 3 cases: ==, != or NullPointerException
                        self.add("if ({args.first} == NULL) \{ /* Special null case */")
-                       if m.name == "==" then
+                       if m.name == "==" or m.name == "is_same_instance" then
                                assert res != null
                                if args[1].mcasttype isa MNullableType then
                                        self.add("{res} = ({args[1]} == NULL);")
@@ -520,45 +523,21 @@ class GlobalCompilerVisitor
                return recvtype
        end
 
-       # Subpart of old call function
-       # Gets the receiver boxed and casted if necessary
-       private fun get_recv(recvtype: MClassType, args: Array[RuntimeVariable]): RuntimeVariable
+       redef fun call(m, recvtype, args)
        do
-               return self.autoadapt(self.autobox(args.first, recvtype), recvtype)
-       end
+               var recv_type = get_recvtype(m, recvtype, args)
+               var recv = self.autoadapt(self.autobox(args.first, recvtype), recvtype)
+               if m.is_extern then recv = unbox_extern(recv, recv_type)
+
+               args = args.to_a
+               args.first = recv
 
-       # Finalizes a call to a method ´m´ on type ´recvtype´ with arguments ´args´
-       private fun finalize_call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable
-       do
                assert args.length == m.msignature.arity + 1 else debug("Invalid arity for {m}. {args.length} arguments given.")
 
                var rm = new CustomizedRuntimeFunction(m, recvtype)
                return rm.call(self, args)
        end
 
-       redef fun call(m, recvtype, args)
-       do
-               var recv_type = get_recvtype(m, recvtype, args)
-               var recv = get_recv(recv_type, args)
-               if m.is_extern then recv = unbox_extern(recv, recv_type)
-               var new_args = args.to_a
-               self.varargize(m, m.msignature.as(not null), new_args)
-               new_args.first = recv
-               return finalize_call(m, recv_type, new_args)
-       end
-
-       # Does a call without encapsulating varargs into an array
-       # Avoids multiple encapsulation when calling a super in a variadic function
-       fun call_without_varargize(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable
-       do
-               var recv_type = get_recvtype(m, recvtype, args)
-               var recv = get_recv(recv_type, args)
-               if m.is_extern then recv = unbox_extern(recv, recv_type)
-               var new_args = args.to_a
-               new_args.first = recv
-               return finalize_call(m, recv_type, new_args)
-       end
-
        redef fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable
        do
                var types = self.collect_types(args.first)
@@ -580,7 +559,7 @@ class GlobalCompilerVisitor
                                return res
                        end
                        var propdef = m.lookup_next_definition(self.compiler.mainmodule, mclasstype)
-                       var res2 = self.call_without_varargize(propdef, mclasstype, args)
+                       var res2 = self.call(propdef, mclasstype, args)
                        if res != null then self.assign(res, res2.as(not null))
                        return res
                end
@@ -602,7 +581,7 @@ class GlobalCompilerVisitor
                        else
                                self.add("case {self.compiler.classid(t)}: /* test {t} */")
                        end
-                       var res2 = self.call_without_varargize(propdef, t, args)
+                       var res2 = self.call(propdef, t, args)
                        if res != null then self.assign(res, res2.as(not null))
                        self.add "break;"
                end
@@ -651,7 +630,7 @@ class GlobalCompilerVisitor
        do
                if recv.mtype.ctype != "val*" then return
                self.add("PRINT_ERROR(\"BTD BUG: Dynamic type is %s, static type is %s\\n\", class_names[{recv}->classid], \"{recv.mcasttype}\");")
-               self.add("show_backtrace(1);")
+               self.add("fatal_exit(1);")
        end
 
        redef fun isset_attribute(a, recv)
@@ -943,12 +922,6 @@ private class CustomizedRuntimeFunction
        # (usually is a live type but no strong guarantee)
        var recv: MClassType
 
-       init(mmethoddef: MMethodDef, recv: MClassType)
-       do
-               super(mmethoddef)
-               self.recv = recv
-       end
-
        redef fun build_c_name
        do
                var res = self.c_name_cache
@@ -999,7 +972,7 @@ private class CustomizedRuntimeFunction
                        selfvar.is_exact = true
                end
                var arguments = new Array[RuntimeVariable]
-               var frame = new Frame(v, mmethoddef, recv, arguments)
+               var frame = new StaticFrame(v, mmethoddef, recv, arguments)
                v.frame = frame
 
                var sig = new FlatBuffer
@@ -1008,9 +981,6 @@ private class CustomizedRuntimeFunction
                if ret != null then
                        ret = v.resolve_for(ret, selfvar)
                        sig.append("{ret.ctype} ")
-               else if mmethoddef.mproperty.is_new then
-                       ret = recv
-                       sig.append("{ret.ctype} ")
                else
                        sig.append("void ")
                end
@@ -1057,14 +1027,11 @@ private class CustomizedRuntimeFunction
        redef fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
        do
                var ret = self.mmethoddef.msignature.return_mtype
-               if self.mmethoddef.mproperty.is_new then
-                       ret = recv
-               end
                if ret != null then
                        ret = v.resolve_for(ret, arguments.first)
                end
                if self.mmethoddef.can_inline(v) then
-                       var frame = new Frame(v, self.mmethoddef, self.recv, arguments)
+                       var frame = new StaticFrame(v, self.mmethoddef, self.recv, arguments)
                        frame.returnlabel = v.get_name("RET_LABEL")
                        if ret != null then
                                frame.returnvar = v.new_var(ret)