# Separate compilation of a Nit program
module separate_compiler
+import abstract_compiler
+intrude import coloring
+import rapid_type_analysis
-import global_compiler # TODO better separation of concerns
-intrude import vft_computation
+# Add separate compiler specific options
redef class ToolContext
# --separate
var opt_separate: OptionBool = new OptionBool("Use separate compilation", "--separate")
+ # --no-inline-intern
+ var opt_no_inline_intern: OptionBool = new OptionBool("Do not inline call to intern methods", "--no-inline-intern")
+ # --no-union-attribute
+ var opt_no_union_attribute: OptionBool = new OptionBool("Put primitive attibutes in a box instead of an union", "--no-union-attribute")
+ # --no-shortcut-equate
+ var opt_no_shortcut_equate: OptionBool = new OptionBool("Always call == in a polymorphic way", "--no-shortcut-equal")
+ # --inline-coloring-numbers
+ var opt_inline_coloring_numbers: OptionBool = new OptionBool("Inline colors and ids", "--inline-coloring-numbers")
+ # --use-naive-coloring
+ var opt_bm_typing: OptionBool = new OptionBool("Colorize items incrementaly, used to simulate binary matrix typing", "--bm-typing")
+ # --use-mod-perfect-hashing
+ var opt_phmod_typing: OptionBool = new OptionBool("Replace coloration by perfect hashing (with mod operator)", "--phmod-typing")
+ # --use-and-perfect-hashing
+ var opt_phand_typing: OptionBool = new OptionBool("Replace coloration by perfect hashing (with and operator)", "--phand-typing")
+ # --generic-resolution-tree
+ var opt_typing_table_metrics: OptionBool = new OptionBool("Enable static size measuring of tables used for typing and resolution", "--typing-table-metrics")
redef init
do
super
self.option_context.add_option(self.opt_separate)
+ self.option_context.add_option(self.opt_no_inline_intern)
+ self.option_context.add_option(self.opt_no_union_attribute)
+ self.option_context.add_option(self.opt_no_shortcut_equate)
+ self.option_context.add_option(self.opt_inline_coloring_numbers)
+ self.option_context.add_option(self.opt_bm_typing)
+ self.option_context.add_option(self.opt_phmod_typing)
+ self.option_context.add_option(self.opt_phand_typing)
+ self.option_context.add_option(self.opt_typing_table_metrics)
end
end
redef class ModelBuilder
- redef fun run_global_compiler(mainmodule: MModule, runtime_type_analysis: RapidTypeAnalysis)
+ fun run_separate_compiler(mainmodule: MModule, runtime_type_analysis: RapidTypeAnalysis)
+ do
+ var time0 = get_time
+ self.toolcontext.info("*** COMPILING TO C ***", 1)
+
+ var compiler = new SeparateCompiler(mainmodule, self, runtime_type_analysis)
+ compiler.compile_header
+
+ # compile class structures
+ for m in mainmodule.in_importation.greaters do
+ for mclass in m.intro_mclasses do
+ compiler.compile_class_to_c(mclass)
+ end
+ end
+
+ # The main function of the C
+ compiler.new_file
+ compiler.compile_main_function
+
+ # compile methods
+ for m in mainmodule.in_importation.greaters do
+ compiler.new_file
+ compiler.compile_module_to_c(m)
+ end
+
+ # compile live & cast type structures
+ compiler.new_file
+ var mtypes = compiler.do_type_coloring
+ for t in mtypes do
+ compiler.compile_type_to_c(t)
+ end
+
+ compiler.display_stats
+
+ write_and_make(compiler)
+ end
+end
+
+# Singleton that store the knowledge about the separate compilation process
+class SeparateCompiler
+ super AbstractCompiler
+
+ # Cache for classid
+ protected var classids: HashMap[MClassType, String] = new HashMap[MClassType, String]
+
+ # The result of the RTA (used to know live types and methods)
+ var runtime_type_analysis: RapidTypeAnalysis
+
+ private var undead_types: Set[MType] = new HashSet[MType]
+ private var partial_types: Set[MType] = new HashSet[MType]
+
+ private var type_layout_builder: TypeLayoutBuilder
+ private var type_layout: nullable TypeLayout
+ private var type_tables: nullable Map[MType, Array[nullable MType]] = null
+
+ private var live_unanchored_types: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
+
+ private var unanchored_types_colors: nullable Map[MType, Int]
+ private var unanchored_types_tables: nullable Map[MClassType, Array[nullable MType]]
+ private var unanchored_types_masks: nullable Map[MClassType, Int]
+
+ protected var method_colors: Map[MMethod, Int]
+ protected var method_tables: Map[MClass, Array[nullable MMethodDef]]
+
+ protected var attr_colors: Map[MAttribute, Int]
+ protected var attr_tables: Map[MClass, Array[nullable MAttributeDef]]
+
+ protected var vt_colors: Map[MVirtualTypeProp, Int]
+ protected var vt_tables: Map[MClass, Array[nullable MVirtualTypeDef]]
+ protected var vt_masks: nullable Map[MClass, Int]
+
+ private var ft_colors: nullable Map[MParameterType, Int]
+ private var ft_tables: nullable Map[MClass, Array[nullable MParameterType]]
+ private var ft_masks: nullable Map[MClass, Int]
+
+ init(mainmodule: MModule, mmbuilder: ModelBuilder, runtime_type_analysis: RapidTypeAnalysis) do
+ super
+ self.header = new_visitor
+ self.init_layout_builders
+ self.runtime_type_analysis = runtime_type_analysis
+ self.do_property_coloring
+ self.compile_box_kinds
+ end
+
+ protected fun init_layout_builders do
+ # Typing Layout
+ if modelbuilder.toolcontext.opt_bm_typing.value then
+ self.type_layout_builder = new BMTypeLayoutBuilder(self.mainmodule)
+ else if modelbuilder.toolcontext.opt_phmod_typing.value then
+ self.type_layout_builder = new PHTypeLayoutBuilder(self.mainmodule, new PHModOperator)
+ self.header.add_decl("#define HASH(mask, id) ((mask)%(id))")
+ else if modelbuilder.toolcontext.opt_phand_typing.value then
+ self.type_layout_builder = new PHTypeLayoutBuilder(self.mainmodule, new PHAndOperator)
+ self.header.add_decl("#define HASH(mask, id) ((mask)&(id))")
+ else
+ self.type_layout_builder = new CLTypeLayoutBuilder(self.mainmodule)
+ end
+ end
+
+ redef fun compile_header_structs do
+ self.header.add_decl("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
+ self.compile_header_attribute_structs
+ self.header.add_decl("struct class \{ int box_kind; nitmethod_t vft[1]; \}; /* general C type representing a Nit class. */")
+
+ # With unanchored_table, all live type resolution are stored in a big table: unanchored_table
+ self.header.add_decl("struct type \{ int id; const char *name; int color; short int is_nullable; struct types *unanchored_table; int table_size; int type_table[1]; \}; /* general C type representing a Nit type. */")
+
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ self.header.add_decl("struct types \{ int mask; struct type *types[1]; \}; /* a list types (used for vts, fts and unanchored lists). */")
+ else
+ self.header.add_decl("struct types \{ struct type *types[1]; \}; /* a list types (used for vts, fts and unanchored lists). */")
+ end
+
+ self.header.add_decl("typedef struct \{ struct type *type; struct class *class; nitattribute_t attrs[1]; \} val; /* general C type representing a Nit instance. */")
+ end
+
+ fun compile_header_attribute_structs
+ do
+ if modelbuilder.toolcontext.opt_no_union_attribute.value then
+ self.header.add_decl("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
+ else
+ self.header.add_decl("typedef union \{")
+ self.header.add_decl("void* val;")
+ for c, v in self.box_kinds do
+ var t = c.mclass_type
+ self.header.add_decl("{t.ctype} {t.ctypename};")
+ end
+ self.header.add_decl("\} nitattribute_t; /* general C type representing a Nit attribute. */")
+ end
+ end
+
+ fun compile_box_kinds
+ do
+ # Collect all bas box class
+ # FIXME: this is not completely fine with a separate compilation scheme
+ for classname in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
+ var classes = self.mainmodule.model.get_mclasses_by_name(classname)
+ if classes == null then continue
+ assert classes.length == 1 else print classes.join(", ")
+ self.box_kinds[classes.first] = self.box_kinds.length + 1
+ end
+ end
+
+ var box_kinds = new HashMap[MClass, Int]
+
+ fun box_kind_of(mclass: MClass): Int
+ do
+ if mclass.mclass_type.ctype == "val*" then
+ return 0
+ else if mclass.kind == extern_kind then
+ return self.box_kinds[self.mainmodule.get_primitive_class("Pointer")]
+ else
+ return self.box_kinds[mclass]
+ end
+
+ end
+
+ fun compile_color_consts(colors: Map[Object, Int]) do
+ for m, c in colors do
+ if m isa MProperty then
+ if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then
+ self.header.add_decl("#define {m.const_color} {c}")
+ else
+ self.header.add_decl("extern const int {m.const_color};")
+ self.header.add("const int {m.const_color} = {c};")
+ end
+ else if m isa MType then
+ if modelbuilder.toolcontext.opt_inline_coloring_numbers.value then
+ self.header.add_decl("#define {m.const_color} {c}")
+ else
+ self.header.add_decl("extern const int {m.const_color};")
+ self.header.add("const int {m.const_color} = {c};")
+ end
+ end
+ end
+ end
+
+ # colorize classe properties
+ fun do_property_coloring do
+
+ # classes coloration
+ var mclasses = new HashSet[MClass].from(modelbuilder.model.mclasses)
+ var class_coloring = new ClassColoring(mainmodule)
+ class_coloring.colorize(mclasses)
+
+ # methods coloration
+ var method_coloring = new MethodColoring(class_coloring)
+ self.method_colors = method_coloring.colorize
+ self.method_tables = method_coloring.build_property_tables
+ self.compile_color_consts(self.method_colors)
+
+ # attributes coloration
+ var attribute_coloring = new AttributeColoring(class_coloring)
+ self.attr_colors = attribute_coloring.colorize
+ self.attr_tables = attribute_coloring.build_property_tables
+ self.compile_color_consts(self.attr_colors)
+
+ # vt coloration
+ if modelbuilder.toolcontext.opt_bm_typing.value then
+ var vt_coloring = new NaiveVTColoring(class_coloring)
+ self.vt_colors = vt_coloring.colorize
+ self.vt_tables = vt_coloring.build_property_tables
+ else if modelbuilder.toolcontext.opt_phmod_typing.value then
+ var vt_coloring = new VTModPerfectHashing(class_coloring)
+ self.vt_colors = vt_coloring.colorize
+ self.vt_masks = vt_coloring.compute_masks
+ self.vt_tables = vt_coloring.build_property_tables
+ else if modelbuilder.toolcontext.opt_phand_typing.value then
+ var vt_coloring = new VTAndPerfectHashing(class_coloring)
+ self.vt_colors = vt_coloring.colorize
+ self.vt_masks = vt_coloring.compute_masks
+ self.vt_tables = vt_coloring.build_property_tables
+ else
+ var vt_coloring = new VTColoring(class_coloring)
+ self.vt_colors = vt_coloring.colorize
+ self.vt_tables = vt_coloring.build_property_tables
+ end
+ self.compile_color_consts(self.vt_colors)
+ end
+
+ # colorize live types of the program
+ private fun do_type_coloring: Set[MType] do
+ var mtypes = new HashSet[MType]
+ mtypes.add_all(self.runtime_type_analysis.live_types)
+ mtypes.add_all(self.runtime_type_analysis.live_cast_types)
+ mtypes.add_all(self.undead_types)
+ for c in self.box_kinds.keys do
+ mtypes.add(c.mclass_type)
+ end
+
+ for mtype in mtypes do
+ retieve_live_partial_types(mtype)
+ end
+ mtypes.add_all(self.partial_types)
+
+ # VT and FT are stored with other unresolved types in the big unanchored_tables
+ self.compile_unanchored_tables(mtypes)
+
+ # colorize types
+ self.type_layout = self.type_layout_builder.build_layout(mtypes)
+ self.type_tables = self.build_type_tables(mtypes)
+ return mtypes
+ end
+
+ # Build type tables
+ fun build_type_tables(mtypes: Set[MType]): Map[MType, Array[nullable MType]] do
+ var tables = new HashMap[MType, Array[nullable MType]]
+ var layout = self.type_layout
+ for mtype in mtypes do
+ var table = new Array[nullable MType]
+ var supers = new HashSet[MType]
+ supers.add_all(self.mainmodule.super_mtypes(mtype, mtypes))
+ supers.add(mtype)
+ for sup in supers do
+ var color: Int
+ if layout isa PHTypeLayout then
+ color = layout.hashes[mtype][sup]
+ else
+ color = layout.pos[sup]
+ end
+ if table.length <= color then
+ for i in [table.length .. color[ do
+ table[i] = null
+ end
+ end
+ table[color] = sup
+ end
+ tables[mtype] = table
+ end
+ return tables
+ end
+
+ protected fun compile_unanchored_tables(mtypes: Set[MType]) do
+ # Unanchored_tables is used to perform a type resolution at runtime in O(1)
+
+ # During the visit of the body of classes, live_unanchored_types are collected
+ # and associated to
+ # Collect all live_unanchored_types (visited in the body of classes)
+
+ # Determinate fo each livetype what are its possible requested anchored types
+ var mtype2unanchored = new HashMap[MClassType, Set[MType]]
+ for mtype in self.runtime_type_analysis.live_types do
+ var set = new HashSet[MType]
+ for cd in mtype.collect_mclassdefs(self.mainmodule) do
+ if self.live_unanchored_types.has_key(cd) then
+ set.add_all(self.live_unanchored_types[cd])
+ end
+ end
+ mtype2unanchored[mtype] = set
+ end
+
+ # Compute the table layout with the prefered method
+ if modelbuilder.toolcontext.opt_bm_typing.value then
+ var unanchored_type_coloring = new NaiveUnanchoredTypeColoring
+ self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2unanchored)
+ self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2unanchored)
+ else if modelbuilder.toolcontext.opt_phmod_typing.value then
+ var unanchored_type_coloring = new UnanchoredTypeModPerfectHashing
+ self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2unanchored)
+ self.unanchored_types_masks = unanchored_type_coloring.compute_masks(mtype2unanchored)
+ self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2unanchored)
+ else if modelbuilder.toolcontext.opt_phand_typing.value then
+ var unanchored_type_coloring = new UnanchoredTypeAndPerfectHashing
+ self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2unanchored)
+ self.unanchored_types_masks = unanchored_type_coloring.compute_masks(mtype2unanchored)
+ self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2unanchored)
+ else
+ var unanchored_type_coloring = new UnanchoredTypeColoring
+ self.unanchored_types_colors = unanchored_type_coloring.colorize(mtype2unanchored)
+ self.unanchored_types_tables = unanchored_type_coloring.build_tables(mtype2unanchored)
+ end
+
+ # Compile a C constant for each collected unanchored type.
+ # Either to a color, or to -1 if the unanchored type is dead (no live receiver can require it)
+ var all_unanchored = new HashSet[MType]
+ for t in self.live_unanchored_types.values do
+ all_unanchored.add_all(t)
+ end
+ var all_unanchored_types_colors = new HashMap[MType, Int]
+ for t in all_unanchored do
+ if unanchored_types_colors.has_key(t) then
+ all_unanchored_types_colors[t] = unanchored_types_colors[t]
+ else
+ all_unanchored_types_colors[t] = -1
+ end
+ end
+ self.compile_color_consts(all_unanchored_types_colors)
+
+ #print "tables"
+ #for k, v in unanchored_types_tables.as(not null) do
+ # print "{k}: {v.join(", ")}"
+ #end
+ #print ""
+ end
+
+ fun retieve_live_partial_types(mtype: MType) do
+ # add formal types arguments to mtypes
+ if mtype isa MGenericType then
+ for ft in mtype.arguments do
+ if ft.need_anchor then
+ print("Why do we need anchor here ?")
+ abort
+ end
+ self.partial_types.add(ft)
+ retieve_live_partial_types(ft)
+ end
+ end
+ var mclass_type: MClassType
+ if mtype isa MNullableType then
+ mclass_type = mtype.mtype.as(MClassType)
+ else
+ mclass_type = mtype.as(MClassType)
+ end
+
+ # add virtual types to mtypes
+ for vt in self.vt_tables[mclass_type.mclass] do
+ if vt != null then
+ var anchored = vt.bound.anchor_to(self.mainmodule, mclass_type)
+ self.partial_types.add(anchored)
+ end
+ end
+ end
+
+ # Separately compile all the method definitions of the module
+ fun compile_module_to_c(mmodule: MModule)
+ do
+ var old_module = self.mainmodule
+ self.mainmodule = mmodule
+ for cd in mmodule.mclassdefs do
+ for pd in cd.mpropdefs do
+ if not pd isa MMethodDef then continue
+ #print "compile {pd} @ {cd} @ {mmodule}"
+ var r = new SeparateRuntimeFunction(pd)
+ r.compile_to_c(self)
+ if true or cd.bound_mtype.ctype != "val*" then
+ var r2 = new VirtualRuntimeFunction(pd)
+ r2.compile_to_c(self)
+ end
+ end
+ end
+ self.mainmodule = old_module
+ end
+
+ # Globaly compile the type structure of a live type
+ fun compile_type_to_c(mtype: MType)
+ do
+ var c_name = mtype.c_name
+ var v = new SeparateCompilerVisitor(self)
+ v.add_decl("/* runtime type {mtype} */")
+
+ # extern const struct type_X
+ self.header.add_decl("extern const struct type_{c_name} type_{c_name};")
+ self.header.add_decl("struct type_{c_name} \{")
+ self.header.add_decl("int id;")
+ self.header.add_decl("const char *name;")
+ self.header.add_decl("int color;")
+ self.header.add_decl("short int is_nullable;")
+ self.header.add_decl("const struct types *unanchored_table;")
+ self.header.add_decl("int table_size;")
+ self.header.add_decl("int type_table[{self.type_tables[mtype].length}];")
+ self.header.add_decl("\};")
+
+ # const struct type_X
+ v.add_decl("const struct type_{c_name} type_{c_name} = \{")
+ v.add_decl("{self.type_layout.ids[mtype]},")
+ v.add_decl("\"{mtype}\", /* class_name_string */")
+ var layout = self.type_layout
+ if layout isa PHTypeLayout then
+ v.add_decl("{layout.masks[mtype]},")
+ else
+ v.add_decl("{layout.pos[mtype]},")
+ end
+ if mtype isa MNullableType then
+ v.add_decl("1,")
+ else
+ v.add_decl("0,")
+ end
+ if compile_type_unanchored_table(mtype) then
+ v.add_decl("(struct types*) &unanchored_table_{c_name},")
+ else
+ v.add_decl("NULL,")
+ end
+ v.add_decl("{self.type_tables[mtype].length},")
+ v.add_decl("\{")
+ for stype in self.type_tables[mtype] do
+ if stype == null then
+ v.add_decl("-1, /* empty */")
+ else
+ v.add_decl("{self.type_layout.ids[stype]}, /* {stype} */")
+ end
+ end
+ v.add_decl("\},")
+ v.add_decl("\};")
+ end
+
+ protected fun compile_type_fts_table(mtype: MType): Bool do
+
+ var mclass_type: MClassType
+ if mtype isa MNullableType then
+ mclass_type = mtype.mtype.as(MClassType)
+ else
+ mclass_type = mtype.as(MClassType)
+ end
+ if self.ft_tables[mclass_type.mclass].is_empty then return false
+
+ # extern const struct fst_table_X fst_table_X
+ self.header.add_decl("extern const struct fts_table_{mtype.c_name} fts_table_{mtype.c_name};")
+ self.header.add_decl("struct fts_table_{mtype.c_name} \{")
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ self.header.add_decl("int mask;")
+ end
+ self.header.add_decl("struct type *types[{self.ft_tables[mclass_type.mclass].length}];")
+ self.header.add_decl("\};")
+
+ # const struct fts_table_X fts_table_X
+ var v = new_visitor
+ v.add_decl("const struct fts_table_{mtype.c_name} fts_table_{mtype.c_name} = \{")
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ v.add_decl("{self.ft_masks[mclass_type.mclass]},")
+ end
+ v.add_decl("\{")
+ for ft in self.ft_tables[mclass_type.mclass] do
+ if ft == null then
+ v.add_decl("NULL, /* empty */")
+ else
+ var ntype: MType
+ if ft.mclass == mclass_type.mclass then
+ ntype = mclass_type.arguments[ft.rank]
+ else
+ ntype = ft.anchor_to(self.mainmodule, mclass_type)
+ end
+ if self.type_layout.ids.has_key(ntype) then
+ v.add_decl("(struct type*)&type_{ntype.c_name}, /* {ft} ({ntype}) */")
+ else
+ v.add_decl("NULL, /* empty ({ft} not a live type) */")
+ end
+ end
+ end
+ v.add_decl("\},")
+ v.add_decl("\};")
+ return true
+ end
+
+ protected fun compile_type_vts_table(mtype: MType): Bool do
+
+ var mclass_type: MClassType
+ if mtype isa MNullableType then
+ mclass_type = mtype.mtype.as(MClassType)
+ else
+ mclass_type = mtype.as(MClassType)
+ end
+ if self.vt_tables[mclass_type.mclass].is_empty then return false
+
+ # extern const struct vts_table_X vts_table_X
+ self.header.add_decl("extern const struct vts_table_{mtype.c_name} vts_table_{mtype.c_name};")
+ self.header.add_decl("struct vts_table_{mtype.c_name} \{")
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ self.header.add_decl("int mask;")
+ end
+ self.header.add_decl("struct type *types[{self.vt_tables[mclass_type.mclass].length}];")
+ self.header.add_decl("\};")
+
+ # const struct vts_table_X vts_table_X
+ var v = new_visitor
+ v.add_decl("const struct vts_table_{mtype.c_name} vts_table_{mtype.c_name} = \{")
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ v.add_decl("{vt_masks[mclass_type.mclass]},")
+ end
+ v.add_decl("\{")
+
+ for vt in self.vt_tables[mclass_type.mclass] do
+ if vt == null then
+ v.add_decl("NULL, /* empty */")
+ else
+ var bound = vt.bound
+ if bound == null then
+ #FIXME how can a bound be null here ?
+ print "No bound found for virtual type {vt} ?"
+ abort
+ else
+ var is_nullable = ""
+ if bound isa MNullableType then
+ bound = bound.mtype
+ is_nullable = "nullable_"
+ end
+ if bound isa MVirtualType then
+ bound = bound.anchor_to(self.mainmodule, mclass_type)
+ else if bound isa MParameterType then
+ bound = bound.anchor_to(self.mainmodule, mclass_type)
+ else if bound isa MGenericType and bound.need_anchor then
+ bound = bound.anchor_to(self.mainmodule, mclass_type)
+ else if bound isa MClassType then
+ else
+ print "NOT YET IMPLEMENTED: mtype_to_livetype with type: {bound}"
+ abort
+ end
+
+ if self.type_layout.ids.has_key(bound) then
+ v.add_decl("(struct type*)&type_{is_nullable}{bound.c_name}, /* {bound} */")
+ else
+ v.add_decl("NULL, /* dead type {bound} */")
+ end
+ end
+ end
+ end
+ v.add_decl("\},")
+ v.add_decl("\};")
+ return true
+ end
+
+ fun compile_type_unanchored_table(mtype: MType): Bool do
+
+ var mclass_type: MClassType
+ if mtype isa MNullableType then
+ mclass_type = mtype.mtype.as(MClassType)
+ else
+ mclass_type = mtype.as(MClassType)
+ end
+ if not self.unanchored_types_tables.has_key(mclass_type) then return false
+
+ # extern const struct unanchored_table_X unanchored_table_X
+ self.header.add_decl("extern const struct unanchored_table_{mtype.c_name} unanchored_table_{mtype.c_name};")
+
+ self.header.add_decl("struct unanchored_table_{mtype.c_name} \{")
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ self.header.add_decl("int mask;")
+ end
+ self.header.add_decl("struct type *types[{self.unanchored_types_tables[mclass_type].length}];")
+ self.header.add_decl("\};")
+
+ # const struct fts_table_X fts_table_X
+ var v = new_visitor
+ v.add_decl("const struct unanchored_table_{mtype.c_name} unanchored_table_{mtype.c_name} = \{")
+ if modelbuilder.toolcontext.opt_phmod_typing.value or modelbuilder.toolcontext.opt_phand_typing.value then
+ v.add_decl("{self.unanchored_types_masks[mclass_type]},")
+ end
+ v.add_decl("\{")
+ for t in self.unanchored_types_tables[mclass_type] do
+ if t == null then
+ v.add_decl("NULL, /* empty */")
+ else
+ # The table stores the result of the type resolution
+ # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
+ # the value stored is tv.
+ var tv = t.resolve_for(mclass_type, mclass_type, self.mainmodule, true)
+ # FIXME: What typeids means here? How can a tv not be live?
+ if self.type_layout.ids.has_key(tv) then
+ v.add_decl("(struct type*)&type_{tv.c_name}, /* {t}: {tv} */")
+ else
+ v.add_decl("NULL, /* empty ({t}: {tv} not a live type) */")
+ end
+ end
+ end
+ v.add_decl("\},")
+ v.add_decl("\};")
+ return true
+ end
+
+ # Globally compile the table of the class mclass
+ # In a link-time optimisation compiler, tables are globally computed
+ # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
+ fun compile_class_to_c(mclass: MClass)
+ do
+ 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 v = new_visitor
+
+ v.add_decl("/* runtime class {c_name} */")
+ var idnum = classids.length
+ var idname = "ID_" + c_name
+ self.classids[mtype] = idname
+ #self.header.add_decl("#define {idname} {idnum} /* {c_name} */")
+
+ self.header.add_decl("struct class_{c_name} \{")
+ self.header.add_decl("int box_kind;")
+ self.header.add_decl("nitmethod_t vft[{vft.length}];")
+ self.header.add_decl("\};")
+
+ # Build class vft
+ self.header.add_decl("extern const struct class_{c_name} class_{c_name};")
+ v.add_decl("const struct class_{c_name} class_{c_name} = \{")
+ v.add_decl("{self.box_kind_of(mclass)}, /* box_kind */")
+ v.add_decl("\{")
+ for i in [0 .. vft.length[ do
+ var mpropdef = vft[i]
+ if mpropdef == null then
+ v.add_decl("NULL, /* empty */")
+ else
+ if true or mpropdef.mclassdef.bound_mtype.ctype != "val*" then
+ v.add_decl("(nitmethod_t)VIRTUAL_{mpropdef.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
+ else
+ v.add_decl("(nitmethod_t){mpropdef.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
+ end
+ end
+ end
+ v.add_decl("\}")
+ v.add_decl("\};")
+
+ if mtype.ctype != "val*" then
+ #Build instance struct
+ self.header.add_decl("struct instance_{c_name} \{")
+ self.header.add_decl("const struct type *type;")
+ self.header.add_decl("const struct class *class;")
+ self.header.add_decl("{mtype.ctype} value;")
+ self.header.add_decl("\};")
+
+ if not self.runtime_type_analysis.live_types.has(mtype) then return
+
+ self.header.add_decl("val* BOX_{c_name}({mtype.ctype});")
+ v.add_decl("/* allocate {mtype} */")
+ v.add_decl("val* BOX_{mtype.c_name}({mtype.ctype} value) \{")
+ v.add("struct instance_{c_name}*res = GC_MALLOC(sizeof(struct instance_{c_name}));")
+ v.add("res->type = (struct type*) &type_{c_name};")
+ v.add("res->class = (struct class*) &class_{c_name};")
+ v.add("res->value = value;")
+ v.add("return (val*)res;")
+ v.add("\}")
+ return
+ end
+
+ var is_native_array = mclass.name == "NativeArray"
+
+ var sig
+ if is_native_array then
+ sig = "int length, struct type* type"
+ else
+ sig = "struct type* type"
+ end
+
+ #Build instance struct
+ #extern const struct instance_array__NativeArray instance_array__NativeArray;
+ self.header.add_decl("struct instance_{c_name} \{")
+ self.header.add_decl("const struct type *type;")
+ self.header.add_decl("const struct class *class;")
+ self.header.add_decl("nitattribute_t attrs[{attrs.length}];")
+ if is_native_array then
+ # NativeArrays are just a instance header followed by an array of values
+ self.header.add_decl("val* values[0];")
+ end
+ self.header.add_decl("\};")
+
+
+ self.header.add_decl("{mtype.ctype} NEW_{c_name}({sig});")
+ v.add_decl("/* allocate {mtype} */")
+ v.add_decl("{mtype.ctype} NEW_{c_name}({sig}) \{")
+ var res = v.new_named_var(mtype, "self")
+ res.is_exact = true
+ if is_native_array then
+ var mtype_elt = mtype.arguments.first
+ v.add("{res} = GC_MALLOC(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
+ else
+ v.add("{res} = GC_MALLOC(sizeof(struct instance_{c_name}));")
+ end
+ v.add("{res}->type = type;")
+ if v.compiler.modelbuilder.toolcontext.opt_hardening.value then
+ v.add("if(type == NULL) \{")
+ v.add_abort("type null")
+ v.add("\}")
+ v.add("if(type->unanchored_table == NULL) \{")
+ v.add("fprintf(stderr, \"Insantiation of a dead type: %s\\n\", type->name);")
+ v.add_abort("type dead")
+ v.add("\}")
+ end
+ v.add("{res}->class = (struct class*) &class_{c_name};")
+
+ self.generate_init_attr(v, res, mtype)
+ v.add("return {res};")
+ v.add("\}")
+
+ generate_check_init_instance(mtype)
+ 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 c_name = mtype.mclass.c_name
+ var res = new RuntimeVariable("self", mtype, mtype)
+ self.header.add_decl("void CHECK_NEW_{c_name}({mtype.ctype});")
+ v.add_decl("/* allocate {mtype} */")
+ v.add_decl("void CHECK_NEW_{c_name}({mtype.ctype} {res}) \{")
+ self.generate_check_attr(v, res, mtype)
+ v.add("\}")
+ end
+
+ redef fun new_visitor do return new SeparateCompilerVisitor(self)
+
+ # Stats
+
+ redef fun display_stats
+ do
+ super
+ if self.modelbuilder.toolcontext.opt_typing_table_metrics.value then
+ display_sizes
+ end
+ end
+
+ fun display_sizes
+ do
+ print "# size of tables"
+ print "\trs size\trs hole\tst size\tst hole"
+ var rt_table = 0
+ var rt_holes = 0
+ var st_table = 0
+ var st_holes = 0
+ var rtables = unanchored_types_tables
+ if rtables != null then
+ for unanch, table in rtables do
+ rt_table += table.length
+ for e in table do if e == null then rt_holes += 1
+ end
+ end
+
+ var ttables = type_tables
+ if ttables != null then
+ for t, table in ttables do
+ st_table += table.length
+ for e in table do if e == null then st_holes += 1
+ end
+ end
+ print "\t{rt_table}\t{rt_holes}\t{st_table}\t{st_holes}"
+ end
+end
+
+# A visitor on the AST of property definition that generate the C code of a separate compilation process.
+class SeparateCompilerVisitor
+ super AbstractCompilerVisitor
+
+ redef type COMPILER: SeparateCompiler
+
+ redef fun adapt_signature(m, args)
+ do
+ var msignature = m.msignature.resolve_for(m.mclassdef.bound_mtype, m.mclassdef.bound_mtype, m.mclassdef.mmodule, true)
+ var recv = args.first
+ if recv.mtype.ctype != m.mclassdef.mclass.mclass_type.ctype then
+ args.first = self.autobox(args.first, m.mclassdef.mclass.mclass_type)
+ end
+ for i in [0..msignature.arity[ do
+ var t = msignature.mparameters[i].mtype
+ if i == msignature.vararg_rank then
+ t = args[i+1].mtype
+ end
+ args[i+1] = self.autobox(args[i+1], t)
+ end
+ end
+
+ redef fun autobox(value, mtype)
+ do
+ if value.mtype == mtype then
+ return value
+ else if value.mtype.ctype == "val*" and mtype.ctype == "val*" then
+ return value
+ else if value.mtype.ctype == "val*" then
+ return self.new_expr("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype)
+ else if mtype.ctype == "val*" then
+ var valtype = value.mtype.as(MClassType)
+ 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\"); exit(1);")
+ return res
+ end
+ self.add("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
+ return res
+ 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}\"); exit(1);")
+ return res
+ end
+ end
+
+ # Return a C expression returning the runtime type structure of the value
+ # The point of the method is to works also with primitives types.
+ fun type_info(value: RuntimeVariable): String
do
- # Hijack the run_global_compiler to run the separate one if requested.
- if self.toolcontext.opt_separate.value then
- build_vft(mainmodule)
- run_separate_compiler(mainmodule, runtime_type_analysis)
+ if value.mtype.ctype == "val*" then
+ return "{value}->type"
else
- super
+ return "(&type_{value.mtype.c_name})"
end
end
- fun run_separate_compiler(mainmodule: MModule, runtime_type_analysis: RapidTypeAnalysis)
+ redef fun send(mmethod, arguments)
do
- var time0 = get_time
- self.toolcontext.info("*** COMPILING TO C ***", 1)
+ if arguments.first.mcasttype.ctype != "val*" then
+ return self.monomorphic_send(mmethod, arguments.first.mcasttype, arguments)
+ end
+
+ var res: nullable RuntimeVariable
+ var msignature = mmethod.intro.msignature.resolve_for(mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.bound_mtype, mmethod.intro.mclassdef.mmodule, true)
+ var ret = msignature.return_mtype
+ if mmethod.is_new then
+ ret = arguments.first.mtype
+ res = self.new_var(ret)
+ else if ret == null then
+ res = null
+ else
+ res = self.new_var(ret)
+ end
- var compiler = new SeparateCompiler(mainmodule, runtime_type_analysis, self)
- var v = new SeparateCompilerVisitor(compiler)
- compiler.header = v
- v.add_decl("#include <stdlib.h>")
- v.add_decl("#include <stdio.h>")
- v.add_decl("#include <string.h>")
- v.add_decl("#include <gc/gc.h>")
- v.add_decl("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
- v.add_decl("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
- v.add_decl("struct class \{ nitmethod_t vft[1]; \}; /* general C type representing a Nit class. */")
- v.add_decl("typedef struct \{ struct class *class; nitattribute_t attrs[1]; \} val; /* general C type representing a Nit instance. */")
+ var s = new Buffer
+ var ss = new Buffer
- # Class names (for the class_name and output_class_name methods)
+ var recv = arguments.first
+ s.append("val*")
+ ss.append("{recv}")
+ self.varargize(mmethod.intro, mmethod.intro.msignature.as(not null), arguments)
+ for i in [0..msignature.arity[ do
+ var a = arguments[i+1]
+ var t = msignature.mparameters[i].mtype
+ if i == msignature.vararg_rank then
+ t = arguments[i+1].mcasttype
+ end
+ s.append(", {t.ctype}")
+ a = self.autobox(a, t)
+ ss.append(", {a}")
+ end
- v.add_decl("extern const char const * class_names[];")
- v.add("const char const * class_names[] = \{")
- for t in runtime_type_analysis.live_types do
- v.add("\"{t}\",")
+ var consider_null = not self.compiler.modelbuilder.toolcontext.opt_no_check_other.value or mmethod.name == "==" or mmethod.name == "!="
+ var maybenull = recv.mcasttype isa MNullableType and consider_null
+ if maybenull then
+ self.add("if ({recv} == NULL) \{")
+ if mmethod.name == "==" then
+ assert res != null
+ var arg = arguments[1]
+ if arg.mcasttype isa MNullableType then
+ self.add("{res} = ({arg} == NULL);")
+ else if arg.mcasttype isa MNullType then
+ self.add("{res} = 1; /* is null */")
+ else
+ self.add("{res} = 0; /* {arg.inspect} cannot be null */")
+ end
+ else if mmethod.name == "!=" then
+ assert res != null
+ var arg = arguments[1]
+ if arg.mcasttype isa MNullableType then
+ self.add("{res} = ({arg} != NULL);")
+ else if arg.mcasttype isa MNullType then
+ self.add("{res} = 0; /* is null */")
+ else
+ self.add("{res} = 1; /* {arg.inspect} cannot be null */")
+ end
+ else
+ self.add_abort("Reciever is null")
+ end
+ self.add("\} else \{")
+ end
+ if not self.compiler.modelbuilder.toolcontext.opt_no_shortcut_equate.value and (mmethod.name == "==" or mmethod.name == "!=") then
+ assert res != null
+ # Recv is not null, thus is arg is, it is easy to conclude (and respect the invariants)
+ var arg = arguments[1]
+ if arg.mcasttype isa MNullType then
+ if mmethod.name == "==" then
+ self.add("{res} = 0; /* arg is null but recv is not */")
+ else
+ self.add("{res} = 1; /* arg is null and recv is not */")
+ end
+ if maybenull then
+ self.add("\}")
+ end
+ return res
+ end
end
- v.add("\};")
- # The main function of the C
+ var r
+ if ret == null then r = "void" else r = ret.ctype
+ var call = "(({r} (*)({s}))({arguments.first}->class->vft[{mmethod.const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/"
- v = new SeparateCompilerVisitor(compiler)
- v.add_decl("int glob_argc;")
- v.add_decl("char **glob_argv;")
- v.add_decl("val *glob_sys;")
- v.add_decl("int main(int argc, char** argv) \{")
- v.add("glob_argc = argc; glob_argv = argv;")
- var main_type = mainmodule.sys_type
- if main_type == null then return # Nothing to compile
- var glob_sys = v.init_instance(main_type)
- v.add("glob_sys = {glob_sys};")
- var main_init = mainmodule.try_get_primitive_method("init", main_type)
- if main_init != null then
- v.send(main_init, [glob_sys])
- end
- var main_method = mainmodule.try_get_primitive_method("main", main_type)
- if main_method != null then
- v.send(main_method, [glob_sys])
+ if res != null then
+ self.add("{res} = {call};")
+ else
+ self.add("{call};")
end
- v.add("\}")
+ if maybenull then
+ self.add("\}")
+ end
- for m in mainmodule.in_importation.greaters do
- compiler.compile_module_to_c(m)
- for mclass in m.intro_mclasses do
- compiler.compile_class_to_c(mclass)
+ return res
+ end
+
+ redef fun call(mmethoddef, recvtype, arguments)
+ do
+ var res: nullable RuntimeVariable
+ var ret = mmethoddef.msignature.return_mtype
+ if mmethoddef.mproperty.is_new then
+ ret = arguments.first.mtype
+ res = self.new_var(ret)
+ else if ret == null then
+ res = null
+ else
+ ret = ret.resolve_for(mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.mmodule, true)
+ res = self.new_var(ret)
+ end
+
+ if self.compiler.modelbuilder.mpropdef2npropdef.has_key(mmethoddef) and
+ self.compiler.modelbuilder.mpropdef2npropdef[mmethoddef] isa AInternMethPropdef and
+ not compiler.modelbuilder.toolcontext.opt_no_inline_intern.value then
+ var frame = new Frame(self, mmethoddef, recvtype, arguments)
+ frame.returnlabel = self.get_name("RET_LABEL")
+ frame.returnvar = res
+ var old_frame = self.frame
+ self.frame = frame
+ self.add("\{ /* Inline {mmethoddef} ({arguments.join(",")}) */")
+ mmethoddef.compile_inside_to_c(self, arguments)
+ self.add("{frame.returnlabel.as(not null)}:(void)0;")
+ self.add("\}")
+ self.frame = old_frame
+ return res
+ end
+
+ # Autobox arguments
+ self.adapt_signature(mmethoddef, arguments)
+
+ if res == null then
+ self.add("{mmethoddef.c_name}({arguments.join(", ")});")
+ return null
+ else
+ self.add("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
+ end
+
+ return res
+ end
+
+ redef fun vararg_instance(mpropdef, recv, varargs, elttype)
+ do
+ # A vararg must be stored into an new array
+ # The trick is that the dymaic type of the array may depends on the receiver
+ # of the method (ie recv) if the static type is unresolved
+ # This is more complex than usual because the unanchored type must not be resolved
+ # with the current receiver (ie self).
+ # Therefore to isolate the resolution from self, a local Frame is created.
+ # One can see this implementation as an inlined method of the receiver whose only
+ # job is to allocate the array
+ var old_frame = self.frame
+ var frame = new Frame(self, mpropdef, mpropdef.mclassdef.bound_mtype, [recv])
+ self.frame = frame
+ #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
+ var res = self.array_instance(varargs, elttype)
+ self.frame = old_frame
+ return res
+ end
+
+ redef fun isset_attribute(a, recv)
+ do
+ self.check_recv_notnull(recv)
+ var res = self.new_var(bool_type)
+
+ # What is the declared type of the attribute?
+ var mtype = a.intro.static_mtype.as(not null)
+ var intromclassdef = a.intro.mclassdef
+ mtype = mtype.resolve_for(intromclassdef.bound_mtype, intromclassdef.bound_mtype, intromclassdef.mmodule, true)
+
+ if mtype isa MNullableType then
+ self.add("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
+ return res
+ end
+
+ if self.compiler.modelbuilder.toolcontext.opt_no_union_attribute.value then
+ self.add("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
+ else
+
+ if mtype.ctype == "val*" then
+ self.add("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
+ else
+ self.add("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
+ end
+ end
+ return res
+ end
+
+ redef fun read_attribute(a, recv)
+ do
+ self.check_recv_notnull(recv)
+
+ # What is the declared type of the attribute?
+ var ret = a.intro.static_mtype.as(not null)
+ var intromclassdef = a.intro.mclassdef
+ ret = ret.resolve_for(intromclassdef.bound_mtype, intromclassdef.bound_mtype, intromclassdef.mmodule, true)
+
+ if self.compiler.modelbuilder.toolcontext.opt_no_union_attribute.value then
+ # Get the attribute or a box (ie. always a val*)
+ var cret = self.object_type.as_nullable
+ var res = self.new_var(cret)
+ res.mcasttype = ret
+
+ self.add("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
+
+ # Check for Uninitialized attribute
+ if not ret isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then
+ self.add("if ({res} == NULL) \{")
+ self.add_abort("Uninitialized attribute {a.name}")
+ self.add("\}")
+ end
+
+ # Return the attribute or its unboxed version
+ # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
+ return self.autobox(res, ret)
+ else
+ var res = self.new_var(ret)
+ self.add("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
+
+ # Check for Uninitialized attribute
+ if ret.ctype == "val*" and not ret isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then
+ self.add("if ({res} == NULL) \{")
+ self.add_abort("Uninitialized attribute {a.name}")
+ self.add("\}")
+ end
+
+ return res
+ end
+ end
+
+ redef fun write_attribute(a, recv, value)
+ do
+ self.check_recv_notnull(recv)
+
+ # What is the declared type of the attribute?
+ var mtype = a.intro.static_mtype.as(not null)
+ var intromclassdef = a.intro.mclassdef
+ mtype = mtype.resolve_for(intromclassdef.bound_mtype, intromclassdef.bound_mtype, intromclassdef.mmodule, true)
+
+ # Adapt the value to the declared type
+ value = self.autobox(value, mtype)
+
+ if self.compiler.modelbuilder.toolcontext.opt_no_union_attribute.value then
+ var attr = "{recv}->attrs[{a.const_color}]"
+ if mtype.ctype != "val*" then
+ assert mtype isa MClassType
+ # The attribute is primitive, thus we store it in a box
+ # The trick is to create the box the first time then resuse the box
+ self.add("if ({attr} != NULL) \{")
+ self.add("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
+ self.add("\} else \{")
+ value = self.autobox(value, self.object_type.as_nullable)
+ self.add("{attr} = {value}; /* {a} on {recv.inspect} */")
+ self.add("\}")
+ else
+ # The attribute is not primitive, thus store it direclty
+ self.add("{attr} = {value}; /* {a} on {recv.inspect} */")
+ end
+ else
+ self.add("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
+ end
+ end
+
+ # Build livetype structure retrieving
+ # ENSURE: mtype.need_anchor
+ fun retrieve_anchored_livetype(mtype: MGenericType, buffer: Buffer) do
+ assert mtype.need_anchor
+
+ var compiler = self.compiler
+ for ft in mtype.arguments do
+
+ var ntype = ft
+ var s: String = ""
+ if ntype isa MNullableType then
+ ntype = ntype.mtype
+ end
+
+ var recv = self.frame.arguments.first
+ var recv_type_info = self.type_info(recv)
+ if ntype isa MParameterType then
+ if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+ buffer.append("[{recv_type_info}->fts_table->types[HASH({recv_type_info}->fts_table->mask, {ntype.const_color})]->livecolor]")
+ else
+ buffer.append("[{recv_type_info}->fts_table->types[{ntype.const_color}]->livecolor]")
+ end
+ else if ntype isa MVirtualType then
+ if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+ buffer.append("[{recv_type_info}->vts_table->types[HASH({recv_type_info}->vts_table->mask, {ntype.mproperty.const_color})]->livecolor]")
+ else
+ buffer.append("[{recv_type_info}->vts_table->types[{ntype.mproperty.const_color}]->livecolor]")
+ end
+ else if ntype isa MGenericType and ntype.need_anchor then
+ var bbuff = new Buffer
+ retrieve_anchored_livetype(ntype, bbuff)
+ buffer.append("[livetypes_{ntype.mclass.c_name}{bbuff.to_s}->livecolor]")
+ else if ntype isa MClassType then
+ compiler.undead_types.add(ft)
+ buffer.append("[type_{ft.c_name}.livecolor]")
+ else
+ self.add("printf(\"NOT YET IMPLEMENTED: init_instance(%s, {mtype}).\\n\", \"{ft}\"); exit(1);")
+ end
+ end
+ end
+
+ redef fun init_instance(mtype)
+ do
+ var compiler = self.compiler
+ if mtype isa MGenericType and mtype.need_anchor then
+ link_unanchored_type(self.frame.mpropdef.mclassdef, mtype)
+ var recv = self.frame.arguments.first
+ var recv_type_info = self.type_info(recv)
+ if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+ return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) {recv_type_info}->unanchored_table->types[HASH({recv_type_info}->unanchored_table->mask, {mtype.const_color})])", mtype)
+ else
+ return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) {recv_type_info}->unanchored_table->types[{mtype.const_color}])", mtype)
+ end
+ end
+ compiler.undead_types.add(mtype)
+ return self.new_expr("NEW_{mtype.mclass.c_name}((struct type *) &type_{mtype.c_name})", mtype)
+ end
+
+ redef fun check_init_instance(value, mtype)
+ do
+ if self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then return
+ self.add("CHECK_NEW_{mtype.mclass.c_name}({value});")
+ end
+
+ redef fun type_test(value, mtype, tag)
+ do
+ self.add("/* {value.inspect} isa {mtype} */")
+ var compiler = self.compiler
+
+ var recv = self.frame.arguments.first
+ var recv_type_info = self.type_info(recv)
+
+ var res = self.new_var(bool_type)
+
+ var cltype = self.get_name("cltype")
+ self.add_decl("int {cltype};")
+ var idtype = self.get_name("idtype")
+ self.add_decl("int {idtype};")
+
+ var maybe_null = self.maybe_null(value)
+ var accept_null = "0"
+ var ntype = mtype
+ if ntype isa MNullableType then
+ ntype = ntype.mtype
+ accept_null = "1"
+ end
+
+ if value.mcasttype.is_subtype(self.frame.mpropdef.mclassdef.mmodule, self.frame.mpropdef.mclassdef.bound_mtype, mtype) then
+ self.add("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
+ if compiler.modelbuilder.toolcontext.opt_typing_test_metrics.value then
+ self.compiler.count_type_test_skipped[tag] += 1
+ self.add("count_type_test_skipped_{tag}++;")
+ end
+ return res
+ end
+
+ if ntype.need_anchor then
+ var type_struct = self.get_name("type_struct")
+ self.add_decl("struct type* {type_struct};")
+
+ # Either with unanchored_table with a direct resolution
+ link_unanchored_type(self.frame.mpropdef.mclassdef, ntype)
+ if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+ self.add("{type_struct} = {recv_type_info}->unanchored_table->types[HASH({recv_type_info}->unanchored_table->mask, {ntype.const_color})];")
+ else
+ self.add("{type_struct} = {recv_type_info}->unanchored_table->types[{ntype.const_color}];")
+ end
+ if compiler.modelbuilder.toolcontext.opt_typing_test_metrics.value then
+ self.compiler.count_type_test_unresolved[tag] += 1
+ self.add("count_type_test_unresolved_{tag}++;")
+ end
+ self.add("{cltype} = {type_struct}->color;")
+ self.add("{idtype} = {type_struct}->id;")
+ if maybe_null and accept_null == "0" then
+ var is_nullable = self.get_name("is_nullable")
+ self.add_decl("short int {is_nullable};")
+ self.add("{is_nullable} = {type_struct}->is_nullable;")
+ accept_null = is_nullable.to_s
+ end
+ else if ntype isa MClassType then
+ compiler.undead_types.add(mtype)
+ self.add("{cltype} = type_{mtype.c_name}.color;")
+ self.add("{idtype} = type_{mtype.c_name}.id;")
+ if compiler.modelbuilder.toolcontext.opt_typing_test_metrics.value then
+ self.compiler.count_type_test_resolved[tag] += 1
+ self.add("count_type_test_resolved_{tag}++;")
+ end
+ else
+ self.add("printf(\"NOT YET IMPLEMENTED: type_test(%s, {mtype}).\\n\", \"{value.inspect}\"); exit(1);")
+ end
+
+ # check color is in table
+ if maybe_null then
+ self.add("if({value} == NULL) \{")
+ self.add("{res} = {accept_null};")
+ self.add("\} else \{")
+ end
+ var value_type_info = self.type_info(value)
+ if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+ self.add("{cltype} = HASH({value_type_info}->color, {idtype});")
+ end
+ self.add("if({cltype} >= {value_type_info}->table_size) \{")
+ self.add("{res} = 0;")
+ self.add("\} else \{")
+ self.add("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
+ self.add("\}")
+ if maybe_null then
+ self.add("\}")
+ end
+
+ return res
+ end
+
+ redef fun is_same_type_test(value1, value2)
+ do
+ var res = self.new_var(bool_type)
+ # Swap values to be symetric
+ if value2.mtype.ctype != "val*" and value1.mtype.ctype == "val*" then
+ var tmp = value1
+ value1 = value2
+ value2 = tmp
+ end
+ if value1.mtype.ctype != "val*" then
+ if value2.mtype == value1.mtype then
+ self.add("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
+ else if value2.mtype.ctype != "val*" then
+ self.add("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
+ else
+ var mtype1 = value1.mtype.as(MClassType)
+ self.add("{res} = ({value2} != NULL) && ({value2}->class == (struct class*) &class_{mtype1.c_name}); /* is_same_type_test */")
+ end
+ else
+ self.add("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
+ end
+ return res
+ end
+
+ redef fun class_name_string(value)
+ do
+ var res = self.get_name("var_class_name")
+ self.add_decl("const char* {res};")
+ if value.mtype.ctype == "val*" then
+ self.add "{res} = {value} == NULL ? \"null\" : {value}->type->name;"
+ else
+ self.add "{res} = type_{value.mtype.c_name}.name;"
+ end
+ return res
+ end
+
+ redef fun equal_test(value1, value2)
+ do
+ var res = self.new_var(bool_type)
+ if value2.mtype.ctype != "val*" and value1.mtype.ctype == "val*" then
+ var tmp = value1
+ value1 = value2
+ value2 = tmp
+ end
+ if value1.mtype.ctype != "val*" then
+ if value2.mtype == value1.mtype then
+ self.add("{res} = {value1} == {value2};")
+ else if value2.mtype.ctype != "val*" then
+ self.add("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
+ else
+ var mtype1 = value1.mtype.as(MClassType)
+ self.add("{res} = ({value2} != NULL) && ({value2}->class == (struct class*) &class_{mtype1.c_name});")
+ self.add("if ({res}) \{")
+ self.add("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
+ self.add("\}")
+ end
+ return res
+ end
+ var maybe_null = true
+ var test = new Array[String]
+ var t1 = value1.mcasttype
+ if t1 isa MNullableType then
+ test.add("{value1} != NULL")
+ t1 = t1.mtype
+ else
+ maybe_null = false
+ end
+ var t2 = value2.mcasttype
+ if t2 isa MNullableType then
+ test.add("{value2} != NULL")
+ t2 = t2.mtype
+ else
+ maybe_null = false
+ end
+
+ var incompatible = false
+ var primitive
+ if t1.ctype != "val*" then
+ primitive = t1
+ if t1 == t2 then
+ # No need to compare class
+ else if t2.ctype != "val*" then
+ incompatible = true
+ else if can_be_primitive(value2) then
+ test.add("{value1}->class == {value2}->class")
+ else
+ incompatible = true
+ end
+ else if t2.ctype != "val*" then
+ primitive = t2
+ if can_be_primitive(value1) then
+ test.add("{value1}->class == {value2}->class")
+ else
+ incompatible = true
+ end
+ else
+ primitive = null
+ end
+
+ if incompatible then
+ if maybe_null then
+ self.add("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
+ return res
+ else
+ self.add("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
+ return res
end
end
-
- write_and_make(compiler)
- end
-end
-
-# Singleton that store the knowledge about the separate compilation process
-class SeparateCompiler
- super GlobalCompiler # TODO better separation of concerns
-
- # Separately compile all the method definitions of the module
- fun compile_module_to_c(mmodule: MModule)
- do
- for cd in mmodule.mclassdefs do
- for pd in cd.mpropdefs do
- if not pd isa MMethodDef then continue
- #print "compile {pd} @ {cd} @ {mmodule}"
- var r = new SeparateRuntimeFunction(pd)
- r.compile_to_c(self)
- if cd.bound_mtype.ctype != "val*" then
- var r2 = new VirtualRuntimeFunction(pd)
- r2.compile_to_c(self)
- end
+ if primitive != null then
+ test.add("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
+ else if can_be_primitive(value1) and can_be_primitive(value2) then
+ test.add("{value1}->class == {value2}->class")
+ var s = new Array[String]
+ for t, v in self.compiler.box_kinds do
+ s.add "({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
end
+ test.add("({s.join(" || ")})")
+ else
+ self.add("{res} = {value1} == {value2};")
+ return res
end
+ self.add("{res} = {value1} == {value2} || ({test.join(" && ")});")
+ return res
end
- # Globally compile the table of the class mclass
- # In a link-time optimisation compiler, tables are globally computed
- # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
- fun compile_class_to_c(mclass: MClass)
+ fun can_be_primitive(value: RuntimeVariable): Bool
do
- var mtype = mclass.mclassdefs.first.bound_mtype
- var c_name = mclass.mclass_type.c_name
-
- var v = new SeparateCompilerVisitor(self)
-
- v.add_decl("/* runtime class {mtype} */")
- var idnum = classids.length
- var idname = "ID_" + c_name
- self.classids[mtype] = idname
- self.header.add_decl("#define {idname} {idnum} /* {mtype} */")
-
- self.header.add_decl("struct class_{c_name} \{")
- self.header.add_decl("nitmethod_t vft[{mclass.vft.length}];")
+ var t = value.mcasttype
+ if t isa MNullableType then t = t.mtype
+ if not t isa MClassType then return false
+ var k = t.mclass.kind
+ return k == interface_kind or t.ctype != "val*"
+ end
- if mtype.ctype != "val*" then
- # Is the Nit type is native then the struct is a box with two fields:
- # * the `vft` to be polymorph
- # * the `value` that contains the native value.
- self.header.add_decl("{mtype.ctype} value;")
- end
+ fun maybe_null(value: RuntimeVariable): Bool
+ do
+ var t = value.mcasttype
+ return t isa MNullableType or t isa MNullType
+ end
- # Collect all attributes and associate them a field in the structure.
- # Note: we do not try to optimize the order and helps CC to optimize the client code.
- for cd in mtype.collect_mclassdefs(self.mainmodule) do
- for p in cd.intro_mproperties do
- if not p isa MAttribute then continue
- var t = p.intro.static_mtype.as(not null)
- t = t.anchor_to(self.mainmodule, mtype)
- self.header.add_decl("{t.ctype} {p.intro.c_name}; /* {p}: {t} */")
- end
+ redef fun array_instance(array, elttype)
+ do
+ var nclass = self.get_class("NativeArray")
+ var arrayclass = self.get_class("Array")
+ var arraytype = arrayclass.get_mtype([elttype])
+ var res = self.init_instance(arraytype)
+ self.add("\{ /* {res} = array_instance Array[{elttype}] */")
+ var length = self.int_instance(array.length)
+ var nat = native_array_instance(elttype, length)
+ for i in [0..array.length[ do
+ var r = self.autobox(array[i], self.object_type)
+ self.add("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
end
- self.header.add_decl("\};")
+ self.send(self.get_property("with_native", arrayclass.intro.bound_mtype), [res, nat, length])
+ self.check_init_instance(res, arraytype)
+ self.add("\}")
+ return res
+ end
- # Build class vft
- self.header.add_decl("extern const struct class_{c_name} class_{c_name};")
- v.add_decl("const struct class_{c_name} class_{c_name} = \{")
- v.add_decl("\{")
- for i in [0 .. mclass.vft.length[ do
- var mpropdef = mclass.vft[i]
- if mpropdef == null then
- v.add_decl("NULL, /* empty */")
+ fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable
+ do
+ var mtype = self.get_class("NativeArray").get_mtype([elttype])
+ assert mtype isa MGenericType
+ var compiler = self.compiler
+ if mtype.need_anchor then
+ link_unanchored_type(self.frame.mpropdef.mclassdef, mtype)
+ var recv = self.frame.arguments.first
+ var recv_type_info = self.type_info(recv)
+ if compiler.modelbuilder.toolcontext.opt_phmod_typing.value or compiler.modelbuilder.toolcontext.opt_phand_typing.value then
+ return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) {recv_type_info}->unanchored_table->types[HASH({recv_type_info}->unanchored_table->mask, {mtype.const_color})])", mtype)
else
- if mpropdef.mclassdef.bound_mtype.ctype != "val*" then
- v.add_decl("(nitmethod_t)VIRTUAL_{mpropdef.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
- else
- v.add_decl("(nitmethod_t){mpropdef.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
- end
+ return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) {recv_type_info}->unanchored_table->types[{mtype.const_color}])", mtype)
end
end
- v.add_decl("\}")
- v.add_decl("\};")
-
- if mtype.ctype != "val*" then
- #Build instance struct
- self.header.add_decl("struct instance_{c_name} \{")
- self.header.add_decl("const struct class_{c_name} *class;")
- self.header.add_decl("{mtype.ctype} value;")
- self.header.add_decl("\};")
+ compiler.undead_types.add(mtype)
+ return self.new_expr("NEW_{mtype.mclass.c_name}({length}, (struct type *) &type_{mtype.c_name})", mtype)
+ end
- self.header.add_decl("val* BOX_{c_name}({mtype.ctype});")
- v.add_decl("/* allocate {mtype} */")
- v.add_decl("val* BOX_{mtype.c_name}({mtype.ctype} value) \{")
- v.add("struct instance_{c_name}*res = GC_MALLOC(sizeof(struct instance_{c_name}));")
- v.add("res->class = &class_{c_name};")
- v.add("res->value = value;")
- v.add("return (val*)res;")
- v.add("\}")
+ redef fun native_array_def(pname, ret_type, arguments)
+ do
+ var elttype = arguments.first.mtype
+ var nclass = self.get_class("NativeArray")
+ var recv = "((struct instance_{nclass.c_name}*){arguments[0]})->values"
+ if pname == "[]" then
+ self.ret(self.new_expr("{recv}[{arguments[1]}]", ret_type.as(not null)))
+ return
+ else if pname == "[]=" then
+ self.add("{recv}[{arguments[1]}]={arguments[2]};")
+ return
+ else if pname == "copy_to" then
+ var recv1 = "((struct instance_{nclass.c_name}*){arguments[1]})->values"
+ self.add("memcpy({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
return
end
+ end
- #Build instance struct
- v.add_decl("struct instance_{c_name} \{")
- v.add_decl("const struct class_{c_name} *class;")
- v.add_decl("nitattribute_t attrs[{mclass.attrs.length}];")
- v.add_decl("\};")
-
-
- self.header.add_decl("{mtype.ctype} NEW_{c_name}(void);")
- v.add_decl("/* allocate {mtype} */")
- v.add_decl("{mtype.ctype} NEW_{c_name}(void) \{")
- var res = v.new_var(mtype)
- res.is_exact = true
- v.add("{res} = calloc(sizeof(struct instance_{c_name}), 1);")
- v.add("{res}->class = (struct class*) &class_{c_name};")
+ redef fun calloc_array(ret_type, arguments)
+ do
+ var mclass = self.get_class("ArrayCapable")
+ var ft = mclass.mclass_type.arguments.first.as(MParameterType)
+ var res = self.native_array_instance(ft, arguments[1])
+ self.ret(res)
+ end
- for cd in mtype.collect_mclassdefs(self.mainmodule)
- do
- var n = self.modelbuilder.mclassdef2nclassdef[cd]
- for npropdef in n.n_propdefs do
- if npropdef isa AAttrPropdef then
- npropdef.init_expr(v, res)
- end
- end
+ fun link_unanchored_type(mclassdef: MClassDef, mtype: MType) do
+ assert mtype.need_anchor
+ var compiler = self.compiler
+ if not compiler.live_unanchored_types.has_key(self.frame.mpropdef.mclassdef) then
+ compiler.live_unanchored_types[self.frame.mpropdef.mclassdef] = new HashSet[MType]
end
- v.add("return {res};")
- v.add("\}")
+ compiler.live_unanchored_types[self.frame.mpropdef.mclassdef].add(mtype)
end
end
class SeparateRuntimeFunction
super AbstractRuntimeFunction
- redef fun build_c_name: String
- do
- return "{mmethoddef.c_name}"
- end
+ redef fun build_c_name: String do return "{mmethoddef.c_name}"
redef fun to_s do return self.mmethoddef.to_s
var mmethoddef = self.mmethoddef
var recv = self.mmethoddef.mclassdef.bound_mtype
- var v = new SeparateCompilerVisitor(compiler)
+ var v = compiler.new_visitor
var selfvar = new RuntimeVariable("self", recv, recv)
var arguments = new Array[RuntimeVariable]
var frame = new Frame(v, mmethoddef, recv, arguments)
v.frame = frame
+ var msignature = mmethoddef.msignature.resolve_for(mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.bound_mtype, mmethoddef.mclassdef.mmodule, true)
+
var sig = new Buffer
var comment = new Buffer
- var ret = mmethoddef.msignature.return_mtype
+ var ret = msignature.return_mtype
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("void ")
end
sig.append(self.c_name)
- sig.append("({selfvar.mtype.ctype} self")
- comment.append("(self: {recv}")
+ sig.append("({selfvar.mtype.ctype} {selfvar}")
+ comment.append("(self: {selfvar}")
arguments.add(selfvar)
- for i in [0..mmethoddef.msignature.arity[ do
- var mtype = mmethoddef.msignature.mparameters[i].mtype
- if i == mmethoddef.msignature.vararg_rank then
+ for i in [0..msignature.arity[ do
+ var mtype = msignature.mparameters[i].mtype
+ if i == msignature.vararg_rank then
mtype = v.get_class("Array").get_mtype([mtype])
end
- mtype = v.resolve_for(mtype, selfvar)
comment.append(", {mtype}")
sig.append(", {mtype.ctype} p{i}")
var argvar = new RuntimeVariable("p{i}", mtype, mtype)
class VirtualRuntimeFunction
super AbstractRuntimeFunction
- redef fun build_c_name: String
- do
- return "VIRTUAL_{mmethoddef.c_name}"
- end
+ redef fun build_c_name: String do return "VIRTUAL_{mmethoddef.c_name}"
redef fun to_s do return self.mmethoddef.to_s
var mmethoddef = self.mmethoddef
var recv = self.mmethoddef.mclassdef.bound_mtype
- var v = new SeparateCompilerVisitor(compiler)
+ var v = compiler.new_visitor
var selfvar = new RuntimeVariable("self", v.object_type, recv)
var arguments = new Array[RuntimeVariable]
var frame = new Frame(v, mmethoddef, recv, arguments)
var sig = new Buffer
var comment = new Buffer
- var ret = mmethoddef.msignature.return_mtype
+
+ # Because the function is virtual, the signature must match the one of the original class
+ var intromclassdef = self.mmethoddef.mproperty.intro.mclassdef
+ var msignature = mmethoddef.mproperty.intro.msignature.resolve_for(intromclassdef.bound_mtype, intromclassdef.bound_mtype, intromclassdef.mmodule, true)
+ var ret = msignature.return_mtype
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("void ")
end
sig.append(self.c_name)
- sig.append("({selfvar.mtype.ctype} self")
- comment.append("(self: {recv}")
+ sig.append("({selfvar.mtype.ctype} {selfvar}")
+ comment.append("(self: {selfvar}")
arguments.add(selfvar)
- for i in [0..mmethoddef.msignature.arity[ do
- var mtype = mmethoddef.msignature.mparameters[i].mtype
- if i == mmethoddef.msignature.vararg_rank then
+ for i in [0..msignature.arity[ do
+ var mtype = msignature.mparameters[i].mtype
+ if i == msignature.vararg_rank then
mtype = v.get_class("Array").get_mtype([mtype])
end
- mtype = v.resolve_for(mtype, selfvar)
comment.append(", {mtype}")
sig.append(", {mtype.ctype} p{i}")
var argvar = new RuntimeVariable("p{i}", mtype, mtype)
v.add("\}")
end
- redef fun call(v, arguments)
- do
- abort
- # TODO ?
- end
+ # TODO ?
+ redef fun call(v, arguments) do abort
end
-# A visitor on the AST of property definition that generate the C code of a separate compilation process.
-class SeparateCompilerVisitor
- super GlobalCompilerVisitor # TODO better separation of concerns
-
- redef fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable])
- do
- var recv = args.first
- if recv.mtype.ctype != m.mclassdef.mclass.mclass_type.ctype then
- args.first = self.autobox(args.first, m.mclassdef.mclass.mclass_type)
- end
- 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)
- args[i+1] = self.autobox(args[i+1], t)
- end
- end
-
- # Box or unbox a value to another type iff a C type conversion is needed
- # ENSURE: result.mtype.ctype == mtype.ctype
- redef fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable
- do
- if value.mtype.ctype == mtype.ctype then
- return value
- else if value.mtype.ctype == "val*" then
- return self.new_expr("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype)
- else if mtype.ctype == "val*" then
- var valtype = value.mtype.as(MClassType)
- 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\"); exit(1);")
- return res
- end
- self.add("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
- return res
- 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}\"); exit(1);")
- return res
- end
- end
-
- redef fun send(mmethod, arguments)
- do
- if arguments.first.mtype.ctype != "val*" then
- assert arguments.first.mtype == arguments.first.mcasttype
- return self.monomorphic_send(mmethod, arguments.first.mtype, arguments)
- end
-
- var res: nullable RuntimeVariable
- var ret = mmethod.intro.msignature.return_mtype
- if mmethod.is_new then
- ret = arguments.first.mtype
- res = self.new_var(ret)
- else if ret == null then
- res = null
- else
- ret = self.resolve_for(ret, arguments.first)
- res = self.new_var(ret)
- end
-
- var s = new Buffer
- var ss = new Buffer
- var first = true
- for a in arguments do
- if not first then
- s.append(", ")
- ss.append(", ")
- else
- first = false
- end
- s.append("{a.mtype.ctype}")
- ss.append("{a}")
- end
-
- var color = mmethod.color.as(not null)
- var r
- if ret == null then r = "void" else r = ret.ctype
- var call = "(({r} (*)({s}))({arguments.first}->class->vft[{color}]))({ss})"
-
- if res != null then
- self.add("{res} = {call};")
- else
- self.add("{call};")
- end
-
- return res
- end
-
- redef fun call(mmethoddef, recvtype, arguments)
- do
- var res: nullable RuntimeVariable
- var ret = mmethoddef.msignature.return_mtype
- if mmethoddef.mproperty.is_new then
- ret = arguments.first.mtype
- res = self.new_var(ret)
- else if ret == null then
- res = null
- else
- ret = self.resolve_for(ret, arguments.first)
- res = self.new_var(ret)
- end
-
- # Autobox arguments
- self.adapt_signature(mmethoddef, arguments)
-
- if res == null then
- self.add("{mmethoddef.c_name}({arguments.join(", ")});")
- return null
- else
- self.add("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
- end
-
- return res
- end
-
- redef fun read_attribute(a, recv)
- do
- # FIXME: Here we inconditionally return boxed primitive attributes
- var ret = a.intro.static_mtype.as(not null)
- ret = self.resolve_for(ret, recv)
- var cret = self.object_type.as_nullable
- var res = self.new_var(cret)
- res.mcasttype = ret
- self.add("{res} = (val*) {recv}->attrs[{a.color.as(not null)}];")
- if not ret isa MNullableType then
- self.add("if ({res} == NULL) \{")
- self.add_abort("Uninitialized attribute {a.name}")
- self.add("\}")
- end
-
- return res
- end
-
- redef fun write_attribute(a, recv, value)
- do
- # FIXME: Here we inconditionally box primitive attributes
- value = self.autobox(value, self.object_type.as_nullable)
- self.add("{recv}->attrs[{a.color.as(not null)}] = {value};")
- end
-
- redef fun init_instance(mtype)
- do
- mtype = self.anchor(mtype).as(MClassType)
- var res = self.new_expr("NEW_{mtype.c_name}()", mtype)
- return res
- end
-
- redef fun type_test(value, mtype)
- do
- var res = self.new_var(bool_type)
- # TODO
- add("printf(\"NOT YET IMPLEMENTED: type_test(%s,%s).\\n\", \"{value.inspect}\", \"{mtype}\"); exit(1);")
- return res
- end
-
- redef fun is_same_type_test(value1, value2)
- do
- var res = self.new_var(bool_type)
- # TODO
- add("printf(\"NOT YET IMPLEMENTED: is_same_type(%s,%s).\\n\", \"{value1.inspect}\", \"{value2.inspect}\"); exit(1);")
- return res
- end
-
- redef fun class_name_string(value1)
- do
- var res = self.get_name("var_class_name")
- self.add_decl("const char* {res};")
- # TODO
- add("printf(\"NOT YET IMPLEMENTED: class_name_string(%s).\\n\", \"{value1.inspect}\"); exit(1);")
- return res
- end
-
- redef fun equal_test(value1, value2)
- do
- var res = self.new_var(bool_type)
- if value2.mtype.ctype != "val*" and value1.mtype.ctype == "val*" then
- var tmp = value1
- value1 = value2
- value2 = tmp
- end
- if value1.mtype.ctype != "val*" then
- if value2.mtype.ctype == value1.mtype.ctype then
- self.add("{res} = {value1} == {value2};")
- else if value2.mtype.ctype != "val*" then
- self.add("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
- else
- var mtype1 = value1.mtype.as(MClassType)
- self.add("{res} = ({value2} != NULL) && ({value2}->class == (struct class*) &class_{mtype1.c_name});")
- self.add("if ({res}) \{")
- self.add("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
- self.add("\}")
- end
- else
- self.add("{res} = {value1} == {value2};")
- end
- return res
- end
+redef class MType
+ fun const_color: String do return "COLOR_{c_name}"
end
+redef class MProperty
+ fun const_color: String do return "COLOR_{c_name}"
+end
nitlanguage / nit.git / blobdiff