1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # Separate compilation of a Nit program
16 module separate_compiler
18 import abstract_compiler
20 import rapid_type_analysis
22 # Add separate compiler specific options
23 redef class ToolContext
25 var opt_separate
= new OptionBool("Use separate compilation", "--separate")
27 var opt_no_inline_intern
= new OptionBool("Do not inline call to intern methods", "--no-inline-intern")
28 # --no-union-attribute
29 var opt_no_union_attribute
= new OptionBool("Put primitive attibutes in a box instead of an union", "--no-union-attribute")
30 # --no-shortcut-equate
31 var opt_no_shortcut_equate
= new OptionBool("Always call == in a polymorphic way", "--no-shortcut-equal")
32 # --inline-coloring-numbers
33 var opt_inline_coloring_numbers
= new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
34 # --inline-some-methods
35 var opt_inline_some_methods
= new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
36 # --direct-call-monomorph
37 var opt_direct_call_monomorph
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
39 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
41 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
42 # --no-colo-dead-methods
43 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
45 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
50 self.option_context
.add_option
(self.opt_separate
)
51 self.option_context
.add_option
(self.opt_no_inline_intern
)
52 self.option_context
.add_option
(self.opt_no_union_attribute
)
53 self.option_context
.add_option
(self.opt_no_shortcut_equate
)
54 self.option_context
.add_option
(self.opt_inline_coloring_numbers
, opt_inline_some_methods
, opt_direct_call_monomorph
, opt_skip_dead_methods
, opt_semi_global
)
55 self.option_context
.add_option
(self.opt_colo_dead_methods
)
56 self.option_context
.add_option
(self.opt_tables_metrics
)
59 redef fun process_options
(args
)
64 if tc
.opt_semi_global
.value
then
65 tc
.opt_inline_coloring_numbers
.value
= true
66 tc
.opt_inline_some_methods
.value
= true
67 tc
.opt_direct_call_monomorph
.value
= true
68 tc
.opt_skip_dead_methods
.value
= true
72 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
75 class SeparateCompilerPhase
77 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
78 if not toolcontext
.opt_separate
.value
then return
80 var modelbuilder
= toolcontext
.modelbuilder
81 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
82 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
86 redef class ModelBuilder
87 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
90 self.toolcontext
.info
("*** GENERATING C ***", 1)
92 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
93 compiler
.do_compilation
94 compiler
.display_stats
97 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
98 write_and_make
(compiler
)
101 # Count number of invocations by VFT
102 private var nb_invok_by_tables
= 0
103 # Count number of invocations by direct call
104 private var nb_invok_by_direct
= 0
105 # Count number of invocations by inlining
106 private var nb_invok_by_inline
= 0
109 # Singleton that store the knowledge about the separate compilation process
110 class SeparateCompiler
111 super AbstractCompiler
113 redef type VISITOR: SeparateCompilerVisitor
115 # The result of the RTA (used to know live types and methods)
116 var runtime_type_analysis
: nullable RapidTypeAnalysis
118 private var undead_types
: Set[MType] = new HashSet[MType]
119 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
121 private var type_ids
: Map[MType, Int] is noinit
122 private var type_colors
: Map[MType, Int] is noinit
123 private var opentype_colors
: Map[MType, Int] is noinit
124 protected var method_colors
: Map[PropertyLayoutElement, Int] is noinit
125 protected var attr_colors
: Map[MAttribute, Int] is noinit
128 var file
= new_file
("nit.common")
129 self.header
= new CodeWriter(file
)
130 self.compile_box_kinds
133 redef fun do_compilation
136 compiler
.compile_header
138 var c_name
= mainmodule
.c_name
140 # compile class structures
141 modelbuilder
.toolcontext
.info
("Property coloring", 2)
142 compiler
.new_file
("{c_name}.classes")
143 compiler
.do_property_coloring
144 for m
in mainmodule
.in_importation
.greaters
do
145 for mclass
in m
.intro_mclasses
do
146 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
147 compiler
.compile_class_to_c
(mclass
)
151 # The main function of the C
152 compiler
.new_file
("{c_name}.main")
153 compiler
.compile_nitni_global_ref_functions
154 compiler
.compile_main_function
155 compiler
.compile_finalizer_function
158 for m
in mainmodule
.in_importation
.greaters
do
159 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
160 compiler
.new_file
("{m.c_name}.sep")
161 compiler
.compile_module_to_c
(m
)
164 # compile live & cast type structures
165 modelbuilder
.toolcontext
.info
("Type coloring", 2)
166 compiler
.new_file
("{c_name}.types")
167 compiler
.compile_types
170 # Color and compile type structures and cast information
175 var mtypes
= compiler
.do_type_coloring
177 compiler
.compile_type_to_c
(t
)
179 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
180 for t
in compiler
.undead_types
do
181 if mtypes
.has
(t
) then continue
182 compiler
.compile_type_to_c
(t
)
187 redef fun compile_header_structs
do
188 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
189 self.compile_header_attribute_structs
190 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
192 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
193 self.header
.add_decl
("struct type \{ int id; const char *name; int color; short int is_nullable; const struct types *resolution_table; int table_size; int type_table[]; \}; /* general C type representing a Nit type. */")
194 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
195 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
196 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
199 fun compile_header_attribute_structs
201 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
202 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
204 self.header
.add_decl
("typedef union \{")
205 self.header
.add_decl
("void* val;")
206 for c
, v
in self.box_kinds
do
207 var t
= c
.mclass_type
209 # `Pointer` reuse the `val` field
210 if t
.mclass
.name
== "Pointer" then continue
212 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
214 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
218 fun compile_box_kinds
220 # Collect all bas box class
221 # FIXME: this is not completely fine with a separate compilation scheme
222 for classname
in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
223 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
224 if classes
== null then continue
225 assert classes
.length
== 1 else print classes
.join
(", ")
226 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
230 var box_kinds
= new HashMap[MClass, Int]
232 fun box_kind_of
(mclass
: MClass): Int
234 #var pointer_type = self.mainmodule.pointer_type
235 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
236 if mclass
.mclass_type
.ctype_extern
== "val*" then
238 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
239 return self.box_kinds
[self.mainmodule
.get_primitive_class
("Pointer")]
241 return self.box_kinds
[mclass
]
246 fun compile_color_consts
(colors
: Map[Object, Int]) do
248 for m
, c
in colors
do
249 compile_color_const
(v
, m
, c
)
253 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
254 if color_consts_done
.has
(m
) then return
255 if m
isa MProperty then
256 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
257 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
259 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
260 v
.add
("const int {m.const_color} = {color};")
262 else if m
isa MPropDef then
263 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
264 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
266 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
267 v
.add
("const int {m.const_color} = {color};")
269 else if m
isa MType then
270 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
271 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
273 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
274 v
.add
("const int {m.const_color} = {color};")
277 color_consts_done
.add
(m
)
280 private var color_consts_done
= new HashSet[Object]
282 # colorize classe properties
283 fun do_property_coloring
do
285 var rta
= runtime_type_analysis
288 var poset
= mainmodule
.flatten_mclass_hierarchy
289 var mclasses
= new HashSet[MClass].from
(poset
)
290 var colorer
= new POSetColorer[MClass]
291 colorer
.colorize
(poset
)
293 # The dead methods, still need to provide a dead color symbol
294 var dead_methods
= new Array[MMethod]
296 # lookup properties to build layout with
297 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
298 var mattributes
= new HashMap[MClass, Set[MAttribute]]
299 for mclass
in mclasses
do
300 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
301 mattributes
[mclass
] = new HashSet[MAttribute]
302 for mprop
in self.mainmodule
.properties
(mclass
) do
303 if mprop
isa MMethod then
304 if not modelbuilder
.toolcontext
.opt_colo_dead_methods
.value
and rta
!= null and not rta
.live_methods
.has
(mprop
) then
305 dead_methods
.add
(mprop
)
308 mmethods
[mclass
].add
(mprop
)
309 else if mprop
isa MAttribute then
310 mattributes
[mclass
].add
(mprop
)
315 # Collect all super calls (dead or not)
316 var all_super_calls
= new HashSet[MMethodDef]
317 for mmodule
in self.mainmodule
.in_importation
.greaters
do
318 for mclassdef
in mmodule
.mclassdefs
do
319 for mpropdef
in mclassdef
.mpropdefs
do
320 if not mpropdef
isa MMethodDef then continue
321 if mpropdef
.has_supercall
then
322 all_super_calls
.add
(mpropdef
)
328 # lookup super calls and add it to the list of mmethods to build layout with
331 super_calls
= rta
.live_super_sends
333 super_calls
= all_super_calls
336 for mmethoddef
in super_calls
do
337 var mclass
= mmethoddef
.mclassdef
.mclass
338 mmethods
[mclass
].add
(mmethoddef
)
339 for descendant
in mclass
.in_hierarchy
(self.mainmodule
).smallers
do
340 mmethods
[descendant
].add
(mmethoddef
)
345 var meth_colorer
= new POSetBucketsColorer[MClass, PropertyLayoutElement](poset
, colorer
.conflicts
)
346 method_colors
= meth_colorer
.colorize
(mmethods
)
347 method_tables
= build_method_tables
(mclasses
, super_calls
)
348 compile_color_consts
(method_colors
)
350 # attribute null color to dead methods and supercalls
351 for mproperty
in dead_methods
do
352 compile_color_const
(new_visitor
, mproperty
, -1)
354 for mpropdef
in all_super_calls
do
355 if super_calls
.has
(mpropdef
) then continue
356 compile_color_const
(new_visitor
, mpropdef
, -1)
359 # attributes coloration
360 var attr_colorer
= new POSetBucketsColorer[MClass, MAttribute](poset
, colorer
.conflicts
)
361 attr_colors
= attr_colorer
.colorize
(mattributes
)
362 attr_tables
= build_attr_tables
(mclasses
)
363 compile_color_consts
(attr_colors
)
366 fun build_method_tables
(mclasses
: Set[MClass], super_calls
: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do
367 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
368 for mclass
in mclasses
do
369 var table
= new Array[nullable MPropDef]
370 tables
[mclass
] = table
372 var mproperties
= self.mainmodule
.properties
(mclass
)
373 var mtype
= mclass
.intro
.bound_mtype
375 for mproperty
in mproperties
do
376 if not mproperty
isa MMethod then continue
377 if not method_colors
.has_key
(mproperty
) then continue
378 var color
= method_colors
[mproperty
]
379 if table
.length
<= color
then
380 for i
in [table
.length
.. color
[ do
384 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
387 for supercall
in super_calls
do
388 if not mtype
.collect_mclassdefs
(mainmodule
).has
(supercall
.mclassdef
) then continue
390 var color
= method_colors
[supercall
]
391 if table
.length
<= color
then
392 for i
in [table
.length
.. color
[ do
396 var mmethoddef
= supercall
.lookup_next_definition
(mainmodule
, mtype
)
397 table
[color
] = mmethoddef
404 fun build_attr_tables
(mclasses
: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do
405 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
406 for mclass
in mclasses
do
407 var table
= new Array[nullable MPropDef]
408 tables
[mclass
] = table
410 var mproperties
= self.mainmodule
.properties
(mclass
)
411 var mtype
= mclass
.intro
.bound_mtype
413 for mproperty
in mproperties
do
414 if not mproperty
isa MAttribute then continue
415 if not attr_colors
.has_key
(mproperty
) then continue
416 var color
= attr_colors
[mproperty
]
417 if table
.length
<= color
then
418 for i
in [table
.length
.. color
[ do
422 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
428 # colorize live types of the program
429 private fun do_type_coloring
: POSet[MType] do
430 # Collect types to colorize
431 var live_types
= runtime_type_analysis
.live_types
432 var live_cast_types
= runtime_type_analysis
.live_cast_types
433 var mtypes
= new HashSet[MType]
434 mtypes
.add_all
(live_types
)
435 for c
in self.box_kinds
.keys
do
436 mtypes
.add
(c
.mclass_type
)
440 var poset
= poset_from_mtypes
(mtypes
, live_cast_types
)
441 var colorer
= new POSetColorer[MType]
442 colorer
.colorize
(poset
)
443 type_ids
= colorer
.ids
444 type_colors
= colorer
.colors
445 type_tables
= build_type_tables
(poset
)
447 # VT and FT are stored with other unresolved types in the big resolution_tables
448 self.compile_resolution_tables
(mtypes
)
453 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
454 var poset
= new POSet[MType]
457 for o
in cast_types
do
458 if e
== o
then continue
460 if e
.is_subtype
(mainmodule
, null, o
) then
469 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
470 var tables
= new HashMap[MType, Array[nullable MType]]
471 for mtype
in mtypes
do
472 var table
= new Array[nullable MType]
473 for sup
in mtypes
[mtype
].greaters
do
474 var color
= type_colors
[sup
]
475 if table
.length
<= color
then
476 for i
in [table
.length
.. color
[ do
482 tables
[mtype
] = table
487 protected fun compile_resolution_tables
(mtypes
: Set[MType]) do
488 # resolution_tables is used to perform a type resolution at runtime in O(1)
490 # During the visit of the body of classes, live_unresolved_types are collected
492 # Collect all live_unresolved_types (visited in the body of classes)
494 # Determinate fo each livetype what are its possible requested anchored types
495 var mtype2unresolved
= new HashMap[MClassType, Set[MType]]
496 for mtype
in self.runtime_type_analysis
.live_types
do
497 var set
= new HashSet[MType]
498 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
499 if self.live_unresolved_types
.has_key
(cd
) then
500 set
.add_all
(self.live_unresolved_types
[cd
])
503 mtype2unresolved
[mtype
] = set
506 # Compute the table layout with the prefered method
507 var colorer
= new BucketsColorer[MType, MType]
508 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
509 resolution_tables
= self.build_resolution_tables
(mtype2unresolved
)
511 # Compile a C constant for each collected unresolved type.
512 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
513 var all_unresolved
= new HashSet[MType]
514 for t
in self.live_unresolved_types
.values
do
515 all_unresolved
.add_all
(t
)
517 var all_unresolved_types_colors
= new HashMap[MType, Int]
518 for t
in all_unresolved
do
519 if opentype_colors
.has_key
(t
) then
520 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
522 all_unresolved_types_colors
[t
] = -1
525 self.compile_color_consts
(all_unresolved_types_colors
)
528 #for k, v in unresolved_types_tables.as(not null) do
529 # print "{k}: {v.join(", ")}"
534 fun build_resolution_tables
(elements
: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do
535 var tables
= new HashMap[MClassType, Array[nullable MType]]
536 for mclasstype
, mtypes
in elements
do
537 var table
= new Array[nullable MType]
538 for mtype
in mtypes
do
539 var color
= opentype_colors
[mtype
]
540 if table
.length
<= color
then
541 for i
in [table
.length
.. color
[ do
547 tables
[mclasstype
] = table
552 # Separately compile all the method definitions of the module
553 fun compile_module_to_c
(mmodule
: MModule)
555 var old_module
= self.mainmodule
556 self.mainmodule
= mmodule
557 for cd
in mmodule
.mclassdefs
do
558 for pd
in cd
.mpropdefs
do
559 if not pd
isa MMethodDef then continue
560 var rta
= runtime_type_analysis
561 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
562 #print "compile {pd} @ {cd} @ {mmodule}"
563 var r
= pd
.separate_runtime_function
565 var r2
= pd
.virtual_runtime_function
566 r2
.compile_to_c
(self)
569 self.mainmodule
= old_module
572 # Globaly compile the type structure of a live type
573 fun compile_type_to_c
(mtype
: MType)
575 assert not mtype
.need_anchor
576 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
577 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
578 var c_name
= mtype
.c_name
579 var v
= new SeparateCompilerVisitor(self)
580 v
.add_decl
("/* runtime type {mtype} */")
582 # extern const struct type_X
583 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
585 # const struct type_X
586 v
.add_decl
("const struct type type_{c_name} = \{")
588 # type id (for cast target)
590 v
.add_decl
("{type_ids[mtype]},")
592 v
.add_decl
("-1, /*CAST DEAD*/")
596 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
598 # type color (for cast target)
600 v
.add_decl
("{type_colors[mtype]},")
602 v
.add_decl
("-1, /*CAST DEAD*/")
606 if mtype
isa MNullableType then
612 # resolution table (for receiver)
614 var mclass_type
= mtype
.as_notnullable
615 assert mclass_type
isa MClassType
616 if resolution_tables
[mclass_type
].is_empty
then
617 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
619 compile_type_resolution_table
(mtype
)
620 v
.require_declaration
("resolution_table_{c_name}")
621 v
.add_decl
("&resolution_table_{c_name},")
624 v
.add_decl
("NULL, /*DEAD*/")
627 # cast table (for receiver)
629 v
.add_decl
("{self.type_tables[mtype].length},")
631 for stype
in self.type_tables
[mtype
] do
632 if stype
== null then
633 v
.add_decl
("-1, /* empty */")
635 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
640 v
.add_decl
("0, \{\}, /*DEAD TYPE*/")
645 fun compile_type_resolution_table
(mtype
: MType) do
647 var mclass_type
= mtype
.as_notnullable
.as(MClassType)
649 # extern const struct resolution_table_X resolution_table_X
650 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
652 # const struct fts_table_X fts_table_X
654 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
655 v
.add_decl
("0, /* dummy */")
657 for t
in self.resolution_tables
[mclass_type
] do
659 v
.add_decl
("NULL, /* empty */")
661 # The table stores the result of the type resolution
662 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
663 # the value stored is tv.
664 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
665 # FIXME: What typeids means here? How can a tv not be live?
666 if type_ids
.has_key
(tv
) then
667 v
.require_declaration
("type_{tv.c_name}")
668 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
670 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
678 # Globally compile the table of the class mclass
679 # In a link-time optimisation compiler, tables are globally computed
680 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
681 fun compile_class_to_c
(mclass
: MClass)
683 var mtype
= mclass
.intro
.bound_mtype
684 var c_name
= mclass
.c_name
686 var vft
= self.method_tables
[mclass
]
687 var attrs
= self.attr_tables
[mclass
]
690 var rta
= runtime_type_analysis
691 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and mtype
.ctype
== "val*" and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
693 v
.add_decl
("/* runtime class {c_name} */")
697 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
698 v
.add_decl
("const struct class class_{c_name} = \{")
699 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
701 for i
in [0 .. vft
.length
[ do
702 var mpropdef
= vft
[i
]
703 if mpropdef
== null then
704 v
.add_decl
("NULL, /* empty */")
706 assert mpropdef
isa MMethodDef
707 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
708 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
711 var rf
= mpropdef
.virtual_runtime_function
712 v
.require_declaration
(rf
.c_name
)
713 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
720 if mtype
.ctype
!= "val*" or mtype
.mclass
.name
== "Pointer" then
721 # Is a primitive type or the Pointer class, not any other extern class
723 #Build instance struct
724 self.header
.add_decl
("struct instance_{c_name} \{")
725 self.header
.add_decl
("const struct type *type;")
726 self.header
.add_decl
("const struct class *class;")
727 self.header
.add_decl
("{mtype.ctype_extern} value;")
728 self.header
.add_decl
("\};")
730 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
733 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
734 v
.add_decl
("/* allocate {mtype} */")
735 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
736 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
737 v
.compiler
.undead_types
.add
(mtype
)
738 v
.require_declaration
("type_{c_name}")
739 v
.add
("res->type = &type_{c_name};")
740 v
.require_declaration
("class_{c_name}")
741 v
.add
("res->class = &class_{c_name};")
742 v
.add
("res->value = value;")
743 v
.add
("return (val*)res;")
746 if mtype
.mclass
.name
!= "Pointer" then return
749 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
750 v
.add_decl
("/* allocate {mtype} */")
751 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
753 v
.add_abort
("{mclass} is DEAD")
755 var res
= v
.new_named_var
(mtype
, "self")
757 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
758 v
.add
("{res}->type = type;")
759 hardening_live_type
(v
, "type")
760 v
.require_declaration
("class_{c_name}")
761 v
.add
("{res}->class = &class_{c_name};")
762 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
763 v
.add
("return {res};")
767 else if mclass
.name
== "NativeArray" then
768 #Build instance struct
769 self.header
.add_decl
("struct instance_{c_name} \{")
770 self.header
.add_decl
("const struct type *type;")
771 self.header
.add_decl
("const struct class *class;")
772 # NativeArrays are just a instance header followed by a length and an array of values
773 self.header
.add_decl
("int length;")
774 self.header
.add_decl
("val* values[0];")
775 self.header
.add_decl
("\};")
778 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
779 v
.add_decl
("/* allocate {mtype} */")
780 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
781 var res
= v
.get_name
("self")
782 v
.add_decl
("struct instance_{c_name} *{res};")
783 var mtype_elt
= mtype
.arguments
.first
784 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
785 v
.add
("{res}->type = type;")
786 hardening_live_type
(v
, "type")
787 v
.require_declaration
("class_{c_name}")
788 v
.add
("{res}->class = &class_{c_name};")
789 v
.add
("{res}->length = length;")
790 v
.add
("return (val*){res};")
793 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
794 # Is an extern class (other than Pointer and NativeString)
795 # Pointer is caught in a previous `if`, and NativeString is internal
797 var pointer_type
= mainmodule
.pointer_type
799 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
800 v
.add_decl
("/* allocate {mtype} */")
801 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
803 v
.add_abort
("{mclass} is DEAD")
805 var res
= v
.new_named_var
(mtype
, "self")
807 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
808 v
.add
("{res}->type = type;")
809 hardening_live_type
(v
, "type")
810 v
.require_declaration
("class_{c_name}")
811 v
.add
("{res}->class = &class_{c_name};")
812 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
813 v
.add
("return {res};")
820 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
821 v
.add_decl
("/* allocate {mtype} */")
822 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
824 v
.add_abort
("{mclass} is DEAD")
826 var res
= v
.new_named_var
(mtype
, "self")
828 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
829 v
.add
("{res}->type = type;")
830 hardening_live_type
(v
, "type")
831 v
.require_declaration
("class_{c_name}")
832 v
.add
("{res}->class = &class_{c_name};")
833 self.generate_init_attr
(v
, res
, mtype
)
835 v
.add
("return {res};")
840 # Add a dynamic test to ensure that the type referenced by `t` is a live type
841 fun hardening_live_type
(v
: VISITOR, t
: String)
843 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
844 v
.add
("if({t} == NULL) \{")
845 v
.add_abort
("type null")
847 v
.add
("if({t}->table_size == 0) \{")
848 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
849 v
.add_abort
("type dead")
853 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
857 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
858 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
859 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
860 protected var attr_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
862 redef fun display_stats
865 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
868 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
871 var tc
= self.modelbuilder
.toolcontext
872 tc
.info
("# implementation of method invocation",2)
873 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
874 tc
.info
("total number of invocations: {nb_invok_total}",2)
875 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
876 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
877 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
882 print
"# size of subtyping tables"
883 print
"\ttotal \tholes"
886 for t
, table
in type_tables
do
887 total
+= table
.length
888 for e
in table
do if e
== null then holes
+= 1
890 print
"\t{total}\t{holes}"
892 print
"# size of resolution tables"
893 print
"\ttotal \tholes"
896 for t
, table
in resolution_tables
do
897 total
+= table
.length
898 for e
in table
do if e
== null then holes
+= 1
900 print
"\t{total}\t{holes}"
902 print
"# size of methods tables"
903 print
"\ttotal \tholes"
906 for t
, table
in method_tables
do
907 total
+= table
.length
908 for e
in table
do if e
== null then holes
+= 1
910 print
"\t{total}\t{holes}"
912 print
"# size of attributes tables"
913 print
"\ttotal \tholes"
916 for t
, table
in attr_tables
do
917 total
+= table
.length
918 for e
in table
do if e
== null then holes
+= 1
920 print
"\t{total}\t{holes}"
923 protected var isset_checks_count
= 0
924 protected var attr_read_count
= 0
926 fun display_isset_checks
do
927 print
"# total number of compiled attribute reads"
928 print
"\t{attr_read_count}"
929 print
"# total number of compiled isset-checks"
930 print
"\t{isset_checks_count}"
933 redef fun compile_nitni_structs
935 self.header
.add_decl
"""
936 struct nitni_instance \{
937 struct nitni_instance *next,
938 *prev; /* adjacent global references in global list */
939 int count; /* number of time this global reference has been marked */
940 struct instance *value;
946 redef fun finalize_ffi_for_module
(mmodule
)
948 var old_module
= self.mainmodule
949 self.mainmodule
= mmodule
951 self.mainmodule
= old_module
955 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
956 class SeparateCompilerVisitor
957 super AbstractCompilerVisitor
959 redef type COMPILER: SeparateCompiler
961 redef fun adapt_signature
(m
, args
)
963 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
964 var recv
= args
.first
965 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
966 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
968 for i
in [0..msignature
.arity
[ do
969 var t
= msignature
.mparameters
[i
].mtype
970 if i
== msignature
.vararg_rank
then
973 args
[i
+1] = self.autobox
(args
[i
+1], t
)
977 redef fun unbox_signature_extern
(m
, args
)
979 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
980 if not m
.mproperty
.is_init
and m
.is_extern
then
981 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
983 for i
in [0..msignature
.arity
[ do
984 var t
= msignature
.mparameters
[i
].mtype
985 if i
== msignature
.vararg_rank
then
988 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
992 redef fun autobox
(value
, mtype
)
994 if value
.mtype
== mtype
then
996 else if value
.mtype
.ctype
== "val*" and mtype
.ctype
== "val*" then
998 else if value
.mtype
.ctype
== "val*" then
999 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1000 else if mtype
.ctype
== "val*" then
1001 var valtype
= value
.mtype
.as(MClassType)
1002 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1003 valtype
= compiler
.mainmodule
.pointer_type
1005 var res
= self.new_var
(mtype
)
1006 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1007 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1008 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1011 self.require_declaration
("BOX_{valtype.c_name}")
1012 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1014 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1015 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1016 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1019 # Bad things will appen!
1020 var res
= self.new_var
(mtype
)
1021 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1022 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); show_backtrace(1);")
1027 redef fun unbox_extern
(value
, mtype
)
1029 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1030 mtype
.mclass
.name
!= "NativeString" then
1031 var pointer_type
= compiler
.mainmodule
.pointer_type
1032 var res
= self.new_var_extern
(mtype
)
1033 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1040 redef fun box_extern
(value
, mtype
)
1042 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1043 mtype
.mclass
.name
!= "NativeString" then
1044 var valtype
= compiler
.mainmodule
.pointer_type
1045 var res
= self.new_var
(mtype
)
1046 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1047 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1048 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1051 self.require_declaration
("BOX_{valtype.c_name}")
1052 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1053 self.require_declaration
("type_{mtype.c_name}")
1054 self.add
("{res}->type = &type_{mtype.c_name};")
1055 self.require_declaration
("class_{mtype.c_name}")
1056 self.add
("{res}->class = &class_{mtype.c_name};")
1063 # Return a C expression returning the runtime type structure of the value
1064 # The point of the method is to works also with primitives types.
1065 fun type_info
(value
: RuntimeVariable): String
1067 if value
.mtype
.ctype
== "val*" then
1068 return "{value}->type"
1070 compiler
.undead_types
.add
(value
.mtype
)
1071 self.require_declaration
("type_{value.mtype.c_name}")
1072 return "(&type_{value.mtype.c_name})"
1076 redef fun compile_callsite
(callsite
, args
)
1078 var rta
= compiler
.runtime_type_analysis
1079 var mmethod
= callsite
.mproperty
1080 # TODO: Inlining of new-style constructors with initializers
1081 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1082 var tgs
= rta
.live_targets
(callsite
)
1083 if tgs
.length
== 1 then
1085 var res0
= before_send
(mmethod
, args
)
1086 var res
= call
(tgs
.first
, tgs
.first
.mclassdef
.bound_mtype
, args
)
1087 if res0
!= null then
1089 self.assign
(res0
, res
)
1092 add
("\}") # close the before_send
1098 redef fun send
(mmethod
, arguments
)
1100 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1101 # In order to shortcut the primitive, we need to find the most specific method
1102 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1103 var m
= self.compiler
.mainmodule
1104 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1105 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1106 self.compiler
.mainmodule
= m
1110 return table_send
(mmethod
, arguments
, mmethod
.const_color
)
1113 # Handle common special cases before doing the effective method invocation
1114 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1115 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1116 # Client must not forget to close the } after them.
1118 # The value returned is the result of the common special cases.
1119 # If not null, client must compile it with the result of their own effective method invocation.
1121 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1122 # is generated to cancel the effective method invocation that will follow
1123 # TODO: find a better approach
1124 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1126 var res
: nullable RuntimeVariable = null
1127 var recv
= arguments
.first
1128 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1129 var maybenull
= recv
.mcasttype
isa MNullableType and consider_null
1131 self.add
("if ({recv} == NULL) \{")
1132 if mmethod
.name
== "==" then
1133 res
= self.new_var
(bool_type
)
1134 var arg
= arguments
[1]
1135 if arg
.mcasttype
isa MNullableType then
1136 self.add
("{res} = ({arg} == NULL);")
1137 else if arg
.mcasttype
isa MNullType then
1138 self.add
("{res} = 1; /* is null */")
1140 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1142 else if mmethod
.name
== "!=" then
1143 res
= self.new_var
(bool_type
)
1144 var arg
= arguments
[1]
1145 if arg
.mcasttype
isa MNullableType then
1146 self.add
("{res} = ({arg} != NULL);")
1147 else if arg
.mcasttype
isa MNullType then
1148 self.add
("{res} = 0; /* is null */")
1150 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1153 self.add_abort
("Receiver is null")
1155 self.add
("\} else \{")
1159 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=") then
1160 if res
== null then res
= self.new_var
(bool_type
)
1161 # Recv is not null, thus is arg is, it is easy to conclude (and respect the invariants)
1162 var arg
= arguments
[1]
1163 if arg
.mcasttype
isa MNullType then
1164 if mmethod
.name
== "==" then
1165 self.add
("{res} = 0; /* arg is null but recv is not */")
1167 self.add
("{res} = 1; /* arg is null and recv is not */")
1169 self.add
("\}") # closes the null case
1170 self.add
("if (0) \{") # what follow is useless, CC will drop it
1176 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], const_color
: String): nullable RuntimeVariable
1178 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1179 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1181 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1182 var recv
= arguments
.first
1184 var res0
= before_send
(mmethod
, arguments
)
1186 var res
: nullable RuntimeVariable
1187 var msignature
= mmethod
.intro
.msignature
.resolve_for
(mmethod
.intro
.mclassdef
.bound_mtype
, mmethod
.intro
.mclassdef
.bound_mtype
, mmethod
.intro
.mclassdef
.mmodule
, true)
1188 var ret
= msignature
.return_mtype
1192 res
= self.new_var
(ret
)
1195 var s
= new FlatBuffer
1196 var ss
= new FlatBuffer
1200 for i
in [0..msignature
.arity
[ do
1201 var a
= arguments
[i
+1]
1202 var t
= msignature
.mparameters
[i
].mtype
1203 if i
== msignature
.vararg_rank
then
1204 t
= arguments
[i
+1].mcasttype
1206 s
.append
(", {t.ctype}")
1207 a
= self.autobox
(a
, t
)
1213 if ret
== null then r
= "void" else r
= ret
.ctype
1214 self.require_declaration
(const_color
)
1215 var call
= "(({r} (*)({s}))({arguments.first}->class->vft[{const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1218 self.add
("{res} = {call};")
1223 if res0
!= null then
1229 self.add
("\}") # closes the null case
1234 redef fun call
(mmethoddef
, recvtype
, arguments
)
1236 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1238 var res
: nullable RuntimeVariable
1239 var ret
= mmethoddef
.msignature
.return_mtype
1243 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1244 res
= self.new_var
(ret
)
1247 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1248 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1249 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1250 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1251 var frame
= new Frame(self, mmethoddef
, recvtype
, arguments
)
1252 frame
.returnlabel
= self.get_name
("RET_LABEL")
1253 frame
.returnvar
= res
1254 var old_frame
= self.frame
1256 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1257 mmethoddef
.compile_inside_to_c
(self, arguments
)
1258 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1260 self.frame
= old_frame
1263 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1264 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1267 self.adapt_signature
(mmethoddef
, arguments
)
1269 self.require_declaration
(mmethoddef
.c_name
)
1271 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1274 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1280 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1282 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1283 # In order to shortcut the primitive, we need to find the most specific method
1284 # However, because of performance (no flattening), we always work on the realmainmodule
1285 var main
= self.compiler
.mainmodule
1286 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1287 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1288 self.compiler
.mainmodule
= main
1291 return table_send
(m
.mproperty
, arguments
, m
.const_color
)
1294 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1296 # A vararg must be stored into an new array
1297 # The trick is that the dymaic type of the array may depends on the receiver
1298 # of the method (ie recv) if the static type is unresolved
1299 # This is more complex than usual because the unresolved type must not be resolved
1300 # with the current receiver (ie self).
1301 # Therefore to isolate the resolution from self, a local Frame is created.
1302 # One can see this implementation as an inlined method of the receiver whose only
1303 # job is to allocate the array
1304 var old_frame
= self.frame
1305 var frame
= new Frame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1307 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1308 var res
= self.array_instance
(varargs
, elttype
)
1309 self.frame
= old_frame
1313 redef fun isset_attribute
(a
, recv
)
1315 self.check_recv_notnull
(recv
)
1316 var res
= self.new_var
(bool_type
)
1318 # What is the declared type of the attribute?
1319 var mtype
= a
.intro
.static_mtype
.as(not null)
1320 var intromclassdef
= a
.intro
.mclassdef
1321 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1323 if mtype
isa MNullableType then
1324 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1328 self.require_declaration
(a
.const_color
)
1329 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1330 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1333 if mtype
.ctype
== "val*" then
1334 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1336 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1342 redef fun read_attribute
(a
, recv
)
1344 self.check_recv_notnull
(recv
)
1346 # What is the declared type of the attribute?
1347 var ret
= a
.intro
.static_mtype
.as(not null)
1348 var intromclassdef
= a
.intro
.mclassdef
1349 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1351 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1352 self.compiler
.attr_read_count
+= 1
1353 self.add
("count_attr_reads++;")
1356 self.require_declaration
(a
.const_color
)
1357 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1358 # Get the attribute or a box (ie. always a val*)
1359 var cret
= self.object_type
.as_nullable
1360 var res
= self.new_var
(cret
)
1363 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1365 # Check for Uninitialized attribute
1366 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1367 self.add
("if (unlikely({res} == NULL)) \{")
1368 self.add_abort
("Uninitialized attribute {a.name}")
1371 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1372 self.compiler
.isset_checks_count
+= 1
1373 self.add
("count_isset_checks++;")
1377 # Return the attribute or its unboxed version
1378 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1379 return self.autobox
(res
, ret
)
1381 var res
= self.new_var
(ret
)
1382 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1384 # Check for Uninitialized attribute
1385 if ret
.ctype
== "val*" and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1386 self.add
("if (unlikely({res} == NULL)) \{")
1387 self.add_abort
("Uninitialized attribute {a.name}")
1389 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1390 self.compiler
.isset_checks_count
+= 1
1391 self.add
("count_isset_checks++;")
1399 redef fun write_attribute
(a
, recv
, value
)
1401 self.check_recv_notnull
(recv
)
1403 # What is the declared type of the attribute?
1404 var mtype
= a
.intro
.static_mtype
.as(not null)
1405 var intromclassdef
= a
.intro
.mclassdef
1406 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1408 # Adapt the value to the declared type
1409 value
= self.autobox
(value
, mtype
)
1411 self.require_declaration
(a
.const_color
)
1412 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1413 var attr
= "{recv}->attrs[{a.const_color}]"
1414 if mtype
.ctype
!= "val*" then
1415 assert mtype
isa MClassType
1416 # The attribute is primitive, thus we store it in a box
1417 # The trick is to create the box the first time then resuse the box
1418 self.add
("if ({attr} != NULL) \{")
1419 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1420 self.add
("\} else \{")
1421 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1422 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1425 # The attribute is not primitive, thus store it direclty
1426 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1429 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1433 # Check that mtype is a live open type
1434 fun hardening_live_open_type
(mtype
: MType)
1436 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1437 self.require_declaration
(mtype
.const_color
)
1438 var col
= mtype
.const_color
1439 self.add
("if({col} == -1) \{")
1440 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1441 self.add_abort
("open type dead")
1445 # Check that mtype it a pointer to a live cast type
1446 fun hardening_cast_type
(t
: String)
1448 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1449 add
("if({t} == NULL) \{")
1450 add_abort
("cast type null")
1452 add
("if({t}->id == -1 || {t}->color == -1) \{")
1453 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1454 add_abort
("cast type dead")
1458 redef fun init_instance
(mtype
)
1460 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1461 var compiler
= self.compiler
1462 if mtype
isa MGenericType and mtype
.need_anchor
then
1463 hardening_live_open_type
(mtype
)
1464 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1465 var recv
= self.frame
.arguments
.first
1466 var recv_type_info
= self.type_info
(recv
)
1467 self.require_declaration
(mtype
.const_color
)
1468 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1470 compiler
.undead_types
.add
(mtype
)
1471 self.require_declaration
("type_{mtype.c_name}")
1472 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1475 redef fun type_test
(value
, mtype
, tag
)
1477 self.add
("/* {value.inspect} isa {mtype} */")
1478 var compiler
= self.compiler
1480 var recv
= self.frame
.arguments
.first
1481 var recv_type_info
= self.type_info
(recv
)
1483 var res
= self.new_var
(bool_type
)
1485 var cltype
= self.get_name
("cltype")
1486 self.add_decl
("int {cltype};")
1487 var idtype
= self.get_name
("idtype")
1488 self.add_decl
("int {idtype};")
1490 var maybe_null
= self.maybe_null
(value
)
1491 var accept_null
= "0"
1493 if ntype
isa MNullableType then
1498 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1499 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1500 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1501 self.compiler
.count_type_test_skipped
[tag
] += 1
1502 self.add
("count_type_test_skipped_{tag}++;")
1507 if ntype
.need_anchor
then
1508 var type_struct
= self.get_name
("type_struct")
1509 self.add_decl
("const struct type* {type_struct};")
1511 # Either with resolution_table with a direct resolution
1512 hardening_live_open_type
(mtype
)
1513 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1514 self.require_declaration
(mtype
.const_color
)
1515 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1516 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1517 self.compiler
.count_type_test_unresolved
[tag
] += 1
1518 self.add
("count_type_test_unresolved_{tag}++;")
1520 hardening_cast_type
(type_struct
)
1521 self.add
("{cltype} = {type_struct}->color;")
1522 self.add
("{idtype} = {type_struct}->id;")
1523 if maybe_null
and accept_null
== "0" then
1524 var is_nullable
= self.get_name
("is_nullable")
1525 self.add_decl
("short int {is_nullable};")
1526 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1527 accept_null
= is_nullable
.to_s
1529 else if ntype
isa MClassType then
1530 compiler
.undead_types
.add
(mtype
)
1531 self.require_declaration
("type_{mtype.c_name}")
1532 hardening_cast_type
("(&type_{mtype.c_name})")
1533 self.add
("{cltype} = type_{mtype.c_name}.color;")
1534 self.add
("{idtype} = type_{mtype.c_name}.id;")
1535 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1536 self.compiler
.count_type_test_resolved
[tag
] += 1
1537 self.add
("count_type_test_resolved_{tag}++;")
1540 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); show_backtrace(1);")
1543 # check color is in table
1545 self.add
("if({value} == NULL) \{")
1546 self.add
("{res} = {accept_null};")
1547 self.add
("\} else \{")
1549 var value_type_info
= self.type_info
(value
)
1550 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1551 self.add
("{res} = 0;")
1552 self.add
("\} else \{")
1553 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1562 redef fun is_same_type_test
(value1
, value2
)
1564 var res
= self.new_var
(bool_type
)
1565 # Swap values to be symetric
1566 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1571 if value1
.mtype
.ctype
!= "val*" then
1572 if value2
.mtype
== value1
.mtype
then
1573 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1574 else if value2
.mtype
.ctype
!= "val*" then
1575 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1577 var mtype1
= value1
.mtype
.as(MClassType)
1578 self.require_declaration
("class_{mtype1.c_name}")
1579 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1582 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
1587 redef fun class_name_string
(value
)
1589 var res
= self.get_name
("var_class_name")
1590 self.add_decl
("const char* {res};")
1591 if value
.mtype
.ctype
== "val*" then
1592 self.add
"{res} = {value} == NULL ? \"null\
" : {value}->type->name;"
1593 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1594 value
.mtype
.as(MClassType).name
!= "NativeString" then
1595 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1597 self.require_declaration
("type_{value.mtype.c_name}")
1598 self.add
"{res} = type_{value.mtype.c_name}.name;"
1603 redef fun equal_test
(value1
, value2
)
1605 var res
= self.new_var
(bool_type
)
1606 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1611 if value1
.mtype
.ctype
!= "val*" then
1612 if value2
.mtype
== value1
.mtype
then
1613 self.add
("{res} = {value1} == {value2};")
1614 else if value2
.mtype
.ctype
!= "val*" then
1615 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1617 var mtype1
= value1
.mtype
.as(MClassType)
1618 self.require_declaration
("class_{mtype1.c_name}")
1619 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1620 self.add
("if ({res}) \{")
1621 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1626 var maybe_null
= true
1627 var test
= new Array[String]
1628 var t1
= value1
.mcasttype
1629 if t1
isa MNullableType then
1630 test
.add
("{value1} != NULL")
1635 var t2
= value2
.mcasttype
1636 if t2
isa MNullableType then
1637 test
.add
("{value2} != NULL")
1643 var incompatible
= false
1645 if t1
.ctype
!= "val*" then
1648 # No need to compare class
1649 else if t2
.ctype
!= "val*" then
1651 else if can_be_primitive
(value2
) then
1652 test
.add
("{value1}->class == {value2}->class")
1656 else if t2
.ctype
!= "val*" then
1658 if can_be_primitive
(value1
) then
1659 test
.add
("{value1}->class == {value2}->class")
1667 if incompatible
then
1669 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1672 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1676 if primitive
!= null then
1677 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1678 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1679 test
.add
("{value1}->class == {value2}->class")
1680 var s
= new Array[String]
1681 for t
, v
in self.compiler
.box_kinds
do
1682 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1684 test
.add
("({s.join(" || ")})")
1686 self.add
("{res} = {value1} == {value2};")
1689 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1693 fun can_be_primitive
(value
: RuntimeVariable): Bool
1695 var t
= value
.mcasttype
.as_notnullable
1696 if not t
isa MClassType then return false
1697 var k
= t
.mclass
.kind
1698 return k
== interface_kind
or t
.ctype
!= "val*"
1701 fun maybe_null
(value
: RuntimeVariable): Bool
1703 var t
= value
.mcasttype
1704 return t
isa MNullableType or t
isa MNullType
1707 redef fun array_instance
(array
, elttype
)
1709 var nclass
= self.get_class
("NativeArray")
1710 var arrayclass
= self.get_class
("Array")
1711 var arraytype
= arrayclass
.get_mtype
([elttype
])
1712 var res
= self.init_instance
(arraytype
)
1713 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1714 var length
= self.int_instance
(array
.length
)
1715 var nat
= native_array_instance
(elttype
, length
)
1716 for i
in [0..array
.length
[ do
1717 var r
= self.autobox
(array
[i
], self.object_type
)
1718 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
1720 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
1725 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
1727 var mtype
= self.get_class
("NativeArray").get_mtype
([elttype
])
1728 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1729 assert mtype
isa MGenericType
1730 var compiler
= self.compiler
1731 if mtype
.need_anchor
then
1732 hardening_live_open_type
(mtype
)
1733 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1734 var recv
= self.frame
.arguments
.first
1735 var recv_type_info
= self.type_info
(recv
)
1736 self.require_declaration
(mtype
.const_color
)
1737 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1739 compiler
.undead_types
.add
(mtype
)
1740 self.require_declaration
("type_{mtype.c_name}")
1741 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
1744 redef fun native_array_def
(pname
, ret_type
, arguments
)
1746 var elttype
= arguments
.first
.mtype
1747 var nclass
= self.get_class
("NativeArray")
1748 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
1749 if pname
== "[]" then
1750 self.ret
(self.new_expr
("{recv}[{arguments[1]}]", ret_type
.as(not null)))
1752 else if pname
== "[]=" then
1753 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
1755 else if pname
== "length" then
1756 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
1758 else if pname
== "copy_to" then
1759 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
1760 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
1765 redef fun calloc_array
(ret_type
, arguments
)
1767 var mclass
= self.get_class
("ArrayCapable")
1768 var ft
= mclass
.mparameters
.first
1769 var res
= self.native_array_instance
(ft
, arguments
[1])
1773 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
1774 assert mtype
.need_anchor
1775 var compiler
= self.compiler
1776 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
1777 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
1779 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
1783 redef class MMethodDef
1784 fun separate_runtime_function
: AbstractRuntimeFunction
1786 var res
= self.separate_runtime_function_cache
1788 res
= new SeparateRuntimeFunction(self)
1789 self.separate_runtime_function_cache
= res
1793 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
1795 fun virtual_runtime_function
: AbstractRuntimeFunction
1797 var res
= self.virtual_runtime_function_cache
1799 res
= new VirtualRuntimeFunction(self)
1800 self.virtual_runtime_function_cache
= res
1804 private var virtual_runtime_function_cache
: nullable VirtualRuntimeFunction
1807 # The C function associated to a methoddef separately compiled
1808 class SeparateRuntimeFunction
1809 super AbstractRuntimeFunction
1811 redef fun build_c_name
: String do return "{mmethoddef.c_name}"
1813 redef fun to_s
do return self.mmethoddef
.to_s
1815 redef fun compile_to_c
(compiler
)
1817 var mmethoddef
= self.mmethoddef
1819 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1820 var v
= compiler
.new_visitor
1821 var selfvar
= new RuntimeVariable("self", recv
, recv
)
1822 var arguments
= new Array[RuntimeVariable]
1823 var frame
= new Frame(v
, mmethoddef
, recv
, arguments
)
1826 var msignature
= mmethoddef
.msignature
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1828 var sig
= new FlatBuffer
1829 var comment
= new FlatBuffer
1830 var ret
= msignature
.return_mtype
1832 sig
.append
("{ret.ctype} ")
1836 sig
.append
(self.c_name
)
1837 sig
.append
("({selfvar.mtype.ctype} {selfvar}")
1838 comment
.append
("({selfvar}: {selfvar.mtype}")
1839 arguments
.add
(selfvar
)
1840 for i
in [0..msignature
.arity
[ do
1841 var mtype
= msignature
.mparameters
[i
].mtype
1842 if i
== msignature
.vararg_rank
then
1843 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
1845 comment
.append
(", {mtype}")
1846 sig
.append
(", {mtype.ctype} p{i}")
1847 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
1848 arguments
.add
(argvar
)
1853 comment
.append
(": {ret}")
1855 compiler
.provide_declaration
(self.c_name
, "{sig};")
1857 v
.add_decl
("/* method {self} for {comment} */")
1858 v
.add_decl
("{sig} \{")
1860 frame
.returnvar
= v
.new_var
(ret
)
1862 frame
.returnlabel
= v
.get_name
("RET_LABEL")
1864 if recv
!= arguments
.first
.mtype
then
1865 #print "{self} {recv} {arguments.first}"
1867 mmethoddef
.compile_inside_to_c
(v
, arguments
)
1869 v
.add
("{frame.returnlabel.as(not null)}:;")
1871 v
.add
("return {frame.returnvar.as(not null)};")
1874 if not self.c_name
.has_substring
("VIRTUAL", 0) then compiler
.names
[self.c_name
] = "{mmethoddef.mclassdef.mmodule.name}::{mmethoddef.mclassdef.mclass.name}::{mmethoddef.mproperty.name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
1878 # The C function associated to a methoddef on a primitive type, stored into a VFT of a class
1879 # The first parameter (the reciever) is always typed by val* in order to accept an object value
1880 class VirtualRuntimeFunction
1881 super AbstractRuntimeFunction
1883 redef fun build_c_name
: String do return "VIRTUAL_{mmethoddef.c_name}"
1885 redef fun to_s
do return self.mmethoddef
.to_s
1887 redef fun compile_to_c
(compiler
)
1889 var mmethoddef
= self.mmethoddef
1891 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1892 var v
= compiler
.new_visitor
1893 var selfvar
= new RuntimeVariable("self", v
.object_type
, recv
)
1894 var arguments
= new Array[RuntimeVariable]
1895 var frame
= new Frame(v
, mmethoddef
, recv
, arguments
)
1898 var sig
= new FlatBuffer
1899 var comment
= new FlatBuffer
1901 # Because the function is virtual, the signature must match the one of the original class
1902 var intromclassdef
= self.mmethoddef
.mproperty
.intro
.mclassdef
1903 var msignature
= mmethoddef
.mproperty
.intro
.msignature
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1904 var ret
= msignature
.return_mtype
1906 sig
.append
("{ret.ctype} ")
1910 sig
.append
(self.c_name
)
1911 sig
.append
("({selfvar.mtype.ctype} {selfvar}")
1912 comment
.append
("({selfvar}: {selfvar.mtype}")
1913 arguments
.add
(selfvar
)
1914 for i
in [0..msignature
.arity
[ do
1915 var mtype
= msignature
.mparameters
[i
].mtype
1916 if i
== msignature
.vararg_rank
then
1917 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
1919 comment
.append
(", {mtype}")
1920 sig
.append
(", {mtype.ctype} p{i}")
1921 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
1922 arguments
.add
(argvar
)
1927 comment
.append
(": {ret}")
1929 compiler
.provide_declaration
(self.c_name
, "{sig};")
1931 v
.add_decl
("/* method {self} for {comment} */")
1932 v
.add_decl
("{sig} \{")
1934 frame
.returnvar
= v
.new_var
(ret
)
1936 frame
.returnlabel
= v
.get_name
("RET_LABEL")
1938 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
1940 assert subret
!= null
1941 v
.assign
(frame
.returnvar
.as(not null), subret
)
1944 v
.add
("{frame.returnlabel.as(not null)}:;")
1946 v
.add
("return {frame.returnvar.as(not null)};")
1949 if not self.c_name
.has_substring
("VIRTUAL", 0) then compiler
.names
[self.c_name
] = "{mmethoddef.mclassdef.mmodule.name}::{mmethoddef.mclassdef.mclass.name}::{mmethoddef.mproperty.name} ({mmethoddef.location.file.filename}--{mmethoddef.location.line_start})"
1953 redef fun call
(v
, arguments
) do abort
1957 fun const_color
: String do return "COLOR_{c_name}"
1960 interface PropertyLayoutElement end
1962 redef class MProperty
1963 super PropertyLayoutElement
1964 fun const_color
: String do return "COLOR_{c_name}"
1967 redef class MPropDef
1968 super PropertyLayoutElement
1969 fun const_color
: String do return "COLOR_{c_name}"
1972 redef class AMethPropdef
1973 # The semi-global compilation does not support inlining calls to extern news
1974 redef fun can_inline
1977 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false