import abstract_compiler
import rapid_type_analysis
+redef class ToolContext
+ # option --global
+ var opt_global = new OptionBool("Use global compilation", "--global")
+
+ var global_compiler_phase = new GlobalCompilerPhase(self, null)
+
+ redef init do
+ super
+ option_context.add_option(opt_global)
+ end
+end
+
+class GlobalCompilerPhase
+ super Phase
+ redef fun process_mainmodule(mainmodule, given_mmodules) do
+ if not toolcontext.opt_global.value then return
+
+ var modelbuilder = toolcontext.modelbuilder
+ var analysis = modelbuilder.do_rapid_type_analysis(mainmodule)
+ modelbuilder.run_global_compiler(mainmodule, analysis)
+ end
+end
+
redef class ModelBuilder
# Entry point to performs a global compilation on the AST of a complete program.
# `mainmodule` is the main module of the program
var compiler = new GlobalCompiler(mainmodule, self, runtime_type_analysis)
compiler.compile_header
+ if mainmodule.model.get_mclasses_by_name("Pointer") != null then
+ runtime_type_analysis.live_types.add(mainmodule.pointer_type)
+ end
for t in runtime_type_analysis.live_types do
compiler.declare_runtimeclass(t)
end
for t in runtime_type_analysis.live_types do
if t.ctype == "val*" then
compiler.generate_init_instance(t)
- compiler.generate_check_init_instance(t)
+ if t.mclass.kind == extern_kind then
+ compiler.generate_box_instance(t)
+ end
else
compiler.generate_box_instance(t)
end
end
# The main function of the C
+ compiler.compile_nitni_global_ref_functions
compiler.compile_main_function
# Compile until all runtime_functions are visited
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*" then
+ if t.ctype != "val*" or t.mclass.name == "Pointer" then
self.live_primitive_types.add(t)
end
end
# Compile class names (for the class_name and output_class_name methods)
protected fun compile_class_names do
var v = new_visitor
- self.header.add_decl("extern const char const * class_names[];")
- v.add("const char const * class_names[] = \{")
+ self.header.add_decl("extern const char *class_names[];")
+ v.add("const char *class_names[] = \{")
for t in self.runtime_type_analysis.live_types do
v.add("\"{t}\", /* {self.classid(t)} */")
end
if mtype.mclass.name == "NativeArray" then
# NativeArrays are just a instance header followed by an array of values
+ v.add_decl("int length;")
v.add_decl("{mtype.arguments.first.ctype} values[1];")
end
- if mtype.ctype != "val*" then
+ if mtype.ctype_extern != "val*" then
# Is the Nit type is native then the struct is a box with two fields:
# * the `classid` to be polymorph
# * the `value` that contains the native value.
- v.add_decl("{mtype.ctype} value;")
+ v.add_decl("{mtype.ctype_extern} value;")
end
# Collect all attributes and associate them a field in the structure.
if is_native_array then
var mtype_elt = mtype.arguments.first
v.add("{res} = nit_alloc(sizeof(struct {mtype.c_name}) + length*sizeof({mtype_elt.ctype}));")
+ v.add("((struct {mtype.c_name}*){res})->length = length;")
else
v.add("{res} = nit_alloc(sizeof(struct {mtype.c_name}));")
end
v.add("{res}->classid = {self.classid(mtype)};")
self.generate_init_attr(v, res, mtype)
+ v.set_finalizer res
v.add("return {res};")
v.add("\}")
end
- redef fun generate_check_init_instance(mtype)
- do
- if self.modelbuilder.toolcontext.opt_no_check_initialization.value then return
-
- var v = self.new_visitor
- var res = new RuntimeVariable("self", mtype, mtype)
- self.header.add_decl("void CHECK_NEW_{mtype.c_name}({mtype.ctype});")
- v.add_decl("/* allocate {mtype} */")
- v.add_decl("void CHECK_NEW_{mtype.c_name}({mtype.ctype} {res}) \{")
- self.generate_check_attr(v, res, mtype)
- v.add("\}")
- end
-
fun generate_box_instance(mtype: MClassType)
do
assert self.runtime_type_analysis.live_types.has(mtype)
- assert mtype.ctype != "val*"
var v = self.new_visitor
self.header.add_decl("val* BOX_{mtype.c_name}({mtype.ctype});")
v.add("res->value = value;")
v.add("return (val*)res;")
v.add("\}")
-
end
redef fun new_visitor do return new GlobalCompilerVisitor(self)
private var collect_types_cache: HashMap[MType, Array[MClassType]] = new HashMap[MType, Array[MClassType]]
+
+ redef fun compile_nitni_structs
+ do
+ self.header.add_decl """
+struct nitni_instance \{
+ struct nitni_instance *next,
+ *prev; /* adjacent global references in global list */
+ int count; /* number of time this global reference has been marked */
+ val *value;
+\};"""
+ super
+ end
end
# A visitor on the AST of property definition that generate the C code.
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("printf(\"Dead code executed!\\n\"); show_backtrace(1);")
+ self.add("PRINT_ERROR(\"Dead code executed!\\n\"); show_backtrace(1);")
return res
end
self.add("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
return res
+ else if value.mtype.ctype == "void*" and mtype.ctype == "void*" then
+ return value
else
# Bad things will appen!
var res = self.new_var(mtype)
self.add("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
- self.add("printf(\"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}\"); show_backtrace(1);")
+ return res
+ end
+ end
+
+ redef fun unbox_extern(value, mtype)
+ do
+ if mtype isa MClassType and mtype.mclass.kind == extern_kind and
+ mtype.mclass.name != "NativeString" then
+ var res = self.new_var_extern(mtype)
+ self.add "{res} = ((struct {mtype.c_name}*){value})->value; /* unboxing {value.mtype} */"
+ return res
+ else
+ return value
+ end
+ end
+
+ redef fun box_extern(value, mtype)
+ do
+ if not mtype isa MClassType or mtype.mclass.kind != extern_kind or
+ mtype.mclass.name == "NativeString" then return value
+
+ 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
+ self.add("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
+ self.add("PRINT_ERROR(\"Dead code executed!\\n\"); show_backtrace(1);")
return res
end
+ self.add("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
+ return res
end
# The runtime types that are acceptable for a given receiver.
else if pname == "[]=" then
self.add("{recv}[{arguments[1]}]={arguments[2]};")
return
+ else if pname == "length" then
+ self.ret(self.new_expr("((struct {arguments[0].mcasttype.c_name}*){arguments[0]})->length", ret_type.as(not null)))
+ return
else if pname == "copy_to" then
var recv1 = "((struct {arguments[1].mcasttype.c_name}*){arguments[1]})->values"
- self.add("memcpy({recv1},{recv},{arguments[2]}*sizeof({elttype.ctype}));")
+ self.add("memmove({recv1},{recv},{arguments[2]}*sizeof({elttype.ctype}));")
return
end
end
+ redef fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable
+ do
+ var ret_type = self.get_class("NativeArray").get_mtype([elttype])
+ return self.new_expr("NEW_{ret_type.c_name}({length})", ret_type)
+ end
+
redef fun calloc_array(ret_type, arguments)
do
self.ret(self.new_expr("NEW_{ret_type.c_name}({arguments[1]})", ret_type))
if res != null then self.assign(res, res2.as(not null))
return res
end
- var consider_null = not self.compiler.modelbuilder.toolcontext.opt_no_check_other.value or m.name == "==" or m.name == "!="
+ var consider_null = not self.compiler.modelbuilder.toolcontext.opt_no_check_null.value or m.name == "==" or m.name == "!="
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 */")
self.add("{res} = 1; /* {args[1].inspect} cannot be null */")
end
else
- self.add_abort("Reciever is null")
+ self.add_abort("Receiver is null")
end
self.add "\} else"
end
do
check_valid_reciever(recvtype)
#debug("call {m} on {recvtype} on {args.first}:{args.first.mtype}")
- if m.mclassdef.mclass.name == "Object" and recvtype.ctype == "val*" then
+ if m.mproperty.is_toplevel then
+ # Do not customize top-level methods
recvtype = m.mclassdef.bound_mtype
end
return recvtype
# 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
- if args.length != m.msignature.arity + 1 then # because of self
- add("printf(\"NOT YET IMPLEMENTED: Invalid arity for {m}. {args.length} arguments given.\\n\"); show_backtrace(1);")
- debug("NOT YET IMPLEMENTED: Invalid arity for {m}. {args.length} arguments given.")
- return null
- end
+ 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)
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
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
end
+ redef fun unbox_signature_extern(m, args)
+ do
+ var recv = args.first
+ for i in [0..m.msignature.arity[ do
+ var t = m.msignature.mparameters[i].mtype
+ if i == m.msignature.vararg_rank then
+ t = args[i+1].mtype
+ end
+ t = self.resolve_for(t, recv)
+ if m.is_extern then args[i+1] = self.unbox_extern(args[i+1], t)
+ end
+ end
+
# FIXME: this is currently buggy since recv is not exact
redef fun vararg_instance(mpropdef, recv, varargs, elttype)
do
fun bugtype(recv: RuntimeVariable)
do
if recv.mtype.ctype != "val*" then return
- self.add("fprintf(stderr, \"BTD BUG: Dynamic type is %s, static type is %s\\n\", class_names[{recv}->classid], \"{recv.mcasttype}\");")
+ 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);")
end
var ta = a.intro.static_mtype.as(not null)
ta = self.resolve_for(ta, recv2)
var res2 = self.new_expr("((struct {t.c_name}*){recv})->{a.intro.c_name}", ta)
- if not ta isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then
+ if not ta isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_attr_isset.value then
if ta.ctype == "val*" then
self.add("if ({res2} == NULL) \{")
self.add_abort("Uninitialized attribute {a.name}")
redef fun type_test(value, mtype, tag)
do
mtype = self.anchor(mtype)
- var mclasstype = mtype
- if mtype isa MNullableType then mclasstype = mtype.mtype
- assert mclasstype isa MClassType
- if not self.compiler.runtime_type_analysis.live_cast_types.has(mclasstype) then
+ if not self.compiler.runtime_type_analysis.live_cast_types.has(mtype) then
debug "problem: {mtype} was detected cast-dead"
abort
end
if not t.is_subtype(self.compiler.mainmodule, null, value2.mcasttype) then continue
s.add "({value1}->classid == {self.compiler.classid(t)} && ((struct {t.c_name}*){value1})->value == ((struct {t.c_name}*){value2})->value)"
end
+
+ if self.compiler.mainmodule.model.get_mclasses_by_name("Pointer") != null then
+ var pointer_type = self.compiler.mainmodule.pointer_type
+ if value1.mcasttype.is_subtype(self.compiler.mainmodule, null, pointer_type) or
+ value2.mcasttype.is_subtype(self.compiler.mainmodule, null, pointer_type) then
+ s.add "(((struct {pointer_type.c_name}*){value1})->value == ((struct {pointer_type.c_name}*){value2})->value)"
+ end
+ end
+
if s.is_empty then
self.add("{res} = {value1} == {value2};")
else
return res
end
- redef fun check_init_instance(recv, mtype)
- do
- if self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then return
-
- mtype = self.anchor(mtype).as(MClassType)
- if not self.compiler.runtime_type_analysis.live_types.has(mtype) then
- debug "problem: {mtype} was detected dead"
- end
-
- self.add("CHECK_NEW_{mtype.c_name}({recv});")
- end
-
redef fun array_instance(array, elttype)
do
elttype = self.anchor(elttype)
end
var length = self.int_instance(array.length)
self.send(self.get_property("with_native", arraytype), [res, nat, length])
- self.check_init_instance(res, arraytype)
self.add("\}")
return res
end
var frame = new Frame(v, mmethoddef, recv, arguments)
v.frame = frame
- var sig = new Buffer
- var comment = new Buffer
+ var sig = new FlatBuffer
+ var comment = new FlatBuffer
var ret = mmethoddef.msignature.return_mtype
if ret != null then
ret = v.resolve_for(ret, selfvar)
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