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 # --colors-are-symbols
33 var opt_colors_are_symbols
= new OptionBool("Store colors as symbols (faster)", "--colors-are-symbols")
35 var opt_trampoline_call
= new OptionBool("Use an indirection when calling", "--trampoline-call")
36 # --substitute-monomorph
37 var opt_substitute_monomorph
= new OptionBool("Replace monomorph trampoline with direct call", "--substitute-monomorph")
39 # --inline-coloring-numbers
40 var opt_inline_coloring_numbers
= new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
41 # --inline-some-methods
42 var opt_inline_some_methods
= new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
43 # --direct-call-monomorph
44 var opt_direct_call_monomorph
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
46 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
48 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
49 # --no-colo-dead-methods
50 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
52 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
57 self.option_context
.add_option
(self.opt_separate
)
58 self.option_context
.add_option
(self.opt_no_inline_intern
)
59 self.option_context
.add_option
(self.opt_no_union_attribute
)
60 self.option_context
.add_option
(self.opt_no_shortcut_equate
, opt_colors_are_symbols
, opt_trampoline_call
, opt_substitute_monomorph
)
61 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
)
62 self.option_context
.add_option
(self.opt_colo_dead_methods
)
63 self.option_context
.add_option
(self.opt_tables_metrics
)
66 redef fun process_options
(args
)
71 if tc
.opt_semi_global
.value
then
72 tc
.opt_inline_coloring_numbers
.value
= true
73 tc
.opt_inline_some_methods
.value
= true
74 tc
.opt_direct_call_monomorph
.value
= true
75 tc
.opt_skip_dead_methods
.value
= true
79 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
82 class SeparateCompilerPhase
84 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
85 if not toolcontext
.opt_separate
.value
then return
87 var modelbuilder
= toolcontext
.modelbuilder
88 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
89 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
93 redef class ModelBuilder
94 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
97 self.toolcontext
.info
("*** GENERATING C ***", 1)
99 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
100 compiler
.do_compilation
101 compiler
.display_stats
104 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
105 write_and_make
(compiler
)
108 # Count number of invocations by VFT
109 private var nb_invok_by_tables
= 0
110 # Count number of invocations by direct call
111 private var nb_invok_by_direct
= 0
112 # Count number of invocations by inlining
113 private var nb_invok_by_inline
= 0
116 # Singleton that store the knowledge about the separate compilation process
117 class SeparateCompiler
118 super AbstractCompiler
120 redef type VISITOR: SeparateCompilerVisitor
122 # The result of the RTA (used to know live types and methods)
123 var runtime_type_analysis
: nullable RapidTypeAnalysis
125 private var undead_types
: Set[MType] = new HashSet[MType]
126 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
128 private var type_ids
: Map[MType, Int] is noinit
129 private var type_colors
: Map[MType, Int] is noinit
130 private var opentype_colors
: Map[MType, Int] is noinit
131 protected var method_colors
: Map[PropertyLayoutElement, Int] is noinit
132 protected var attr_colors
: Map[MAttribute, Int] is noinit
135 var file
= new_file
("nit.common")
136 self.header
= new CodeWriter(file
)
137 self.compile_box_kinds
140 redef fun do_compilation
143 compiler
.compile_header
145 var c_name
= mainmodule
.c_name
147 # compile class structures
148 modelbuilder
.toolcontext
.info
("Property coloring", 2)
149 compiler
.new_file
("{c_name}.classes")
150 compiler
.do_property_coloring
151 for m
in mainmodule
.in_importation
.greaters
do
152 for mclass
in m
.intro_mclasses
do
153 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
154 compiler
.compile_class_to_c
(mclass
)
158 # The main function of the C
159 compiler
.new_file
("{c_name}.main")
160 compiler
.compile_nitni_global_ref_functions
161 compiler
.compile_main_function
162 compiler
.compile_finalizer_function
165 for m
in mainmodule
.in_importation
.greaters
do
166 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
167 compiler
.new_file
("{m.c_name}.sep")
168 compiler
.compile_module_to_c
(m
)
171 # compile live & cast type structures
172 modelbuilder
.toolcontext
.info
("Type coloring", 2)
173 compiler
.new_file
("{c_name}.types")
174 compiler
.compile_types
177 # Color and compile type structures and cast information
182 var mtypes
= compiler
.do_type_coloring
184 compiler
.compile_type_to_c
(t
)
186 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
187 for t
in compiler
.undead_types
do
188 if mtypes
.has
(t
) then continue
189 compiler
.compile_type_to_c
(t
)
194 redef fun compile_header_structs
do
195 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
196 self.compile_header_attribute_structs
197 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
199 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
200 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. */")
201 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
202 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
203 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
206 fun compile_header_attribute_structs
208 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
209 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
211 self.header
.add_decl
("typedef union \{")
212 self.header
.add_decl
("void* val;")
213 for c
, v
in self.box_kinds
do
214 var t
= c
.mclass_type
216 # `Pointer` reuse the `val` field
217 if t
.mclass
.name
== "Pointer" then continue
219 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
221 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
225 fun compile_box_kinds
227 # Collect all bas box class
228 # FIXME: this is not completely fine with a separate compilation scheme
229 for classname
in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
230 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
231 if classes
== null then continue
232 assert classes
.length
== 1 else print classes
.join
(", ")
233 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
237 var box_kinds
= new HashMap[MClass, Int]
239 fun box_kind_of
(mclass
: MClass): Int
241 #var pointer_type = self.mainmodule.pointer_type
242 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
243 if mclass
.mclass_type
.ctype_extern
== "val*" then
245 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
246 return self.box_kinds
[self.mainmodule
.get_primitive_class
("Pointer")]
248 return self.box_kinds
[mclass
]
253 fun compile_color_consts
(colors
: Map[Object, Int]) do
255 for m
, c
in colors
do
256 compile_color_const
(v
, m
, c
)
260 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
261 if color_consts_done
.has
(m
) then return
262 if m
isa MEntity then
263 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
264 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
265 else if not modelbuilder
.toolcontext
.opt_colors_are_symbols
.value
or not v
.compiler
.target_platform
.supports_linker_script
then
266 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
267 v
.add
("const int {m.const_color} = {color};")
269 # The color 'C' is the ``address'' of a false static variable 'XC'
270 self.provide_declaration
(m
.const_color
, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
271 if color
== -1 then color
= 0 # Symbols cannot be negative, so just use 0 for dead things
272 # Teach the linker that the address of 'XC' is `color`.
273 linker_script
.add
("X{m.const_color} = {color};")
278 color_consts_done
.add
(m
)
281 private var color_consts_done
= new HashSet[Object]
283 # colorize classe properties
284 fun do_property_coloring
do
286 var rta
= runtime_type_analysis
289 var poset
= mainmodule
.flatten_mclass_hierarchy
290 var mclasses
= new HashSet[MClass].from
(poset
)
291 var colorer
= new POSetColorer[MClass]
292 colorer
.colorize
(poset
)
294 # The dead methods, still need to provide a dead color symbol
295 var dead_methods
= new Array[MMethod]
297 # lookup properties to build layout with
298 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
299 var mattributes
= new HashMap[MClass, Set[MAttribute]]
300 for mclass
in mclasses
do
301 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
302 mattributes
[mclass
] = new HashSet[MAttribute]
303 for mprop
in self.mainmodule
.properties
(mclass
) do
304 if mprop
isa MMethod then
305 if not modelbuilder
.toolcontext
.opt_colo_dead_methods
.value
and rta
!= null and not rta
.live_methods
.has
(mprop
) then
306 dead_methods
.add
(mprop
)
309 mmethods
[mclass
].add
(mprop
)
310 else if mprop
isa MAttribute then
311 mattributes
[mclass
].add
(mprop
)
316 # Collect all super calls (dead or not)
317 var all_super_calls
= new HashSet[MMethodDef]
318 for mmodule
in self.mainmodule
.in_importation
.greaters
do
319 for mclassdef
in mmodule
.mclassdefs
do
320 for mpropdef
in mclassdef
.mpropdefs
do
321 if not mpropdef
isa MMethodDef then continue
322 if mpropdef
.has_supercall
then
323 all_super_calls
.add
(mpropdef
)
329 # lookup super calls and add it to the list of mmethods to build layout with
332 super_calls
= rta
.live_super_sends
334 super_calls
= all_super_calls
337 for mmethoddef
in super_calls
do
338 var mclass
= mmethoddef
.mclassdef
.mclass
339 mmethods
[mclass
].add
(mmethoddef
)
340 for descendant
in mclass
.in_hierarchy
(self.mainmodule
).smallers
do
341 mmethods
[descendant
].add
(mmethoddef
)
346 var meth_colorer
= new POSetBucketsColorer[MClass, PropertyLayoutElement](poset
, colorer
.conflicts
)
347 method_colors
= meth_colorer
.colorize
(mmethods
)
348 method_tables
= build_method_tables
(mclasses
, super_calls
)
349 compile_color_consts
(method_colors
)
351 # attribute null color to dead methods and supercalls
352 for mproperty
in dead_methods
do
353 compile_color_const
(new_visitor
, mproperty
, -1)
355 for mpropdef
in all_super_calls
do
356 if super_calls
.has
(mpropdef
) then continue
357 compile_color_const
(new_visitor
, mpropdef
, -1)
360 # attributes coloration
361 var attr_colorer
= new POSetBucketsColorer[MClass, MAttribute](poset
, colorer
.conflicts
)
362 attr_colors
= attr_colorer
.colorize
(mattributes
)
363 attr_tables
= build_attr_tables
(mclasses
)
364 compile_color_consts
(attr_colors
)
367 fun build_method_tables
(mclasses
: Set[MClass], super_calls
: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do
368 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
369 for mclass
in mclasses
do
370 var table
= new Array[nullable MPropDef]
371 tables
[mclass
] = table
373 var mproperties
= self.mainmodule
.properties
(mclass
)
374 var mtype
= mclass
.intro
.bound_mtype
376 for mproperty
in mproperties
do
377 if not mproperty
isa MMethod then continue
378 if not method_colors
.has_key
(mproperty
) then continue
379 var color
= method_colors
[mproperty
]
380 if table
.length
<= color
then
381 for i
in [table
.length
.. color
[ do
385 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
388 for supercall
in super_calls
do
389 if not mtype
.collect_mclassdefs
(mainmodule
).has
(supercall
.mclassdef
) then continue
391 var color
= method_colors
[supercall
]
392 if table
.length
<= color
then
393 for i
in [table
.length
.. color
[ do
397 var mmethoddef
= supercall
.lookup_next_definition
(mainmodule
, mtype
)
398 table
[color
] = mmethoddef
405 fun build_attr_tables
(mclasses
: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do
406 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
407 for mclass
in mclasses
do
408 var table
= new Array[nullable MPropDef]
409 tables
[mclass
] = table
411 var mproperties
= self.mainmodule
.properties
(mclass
)
412 var mtype
= mclass
.intro
.bound_mtype
414 for mproperty
in mproperties
do
415 if not mproperty
isa MAttribute then continue
416 if not attr_colors
.has_key
(mproperty
) then continue
417 var color
= attr_colors
[mproperty
]
418 if table
.length
<= color
then
419 for i
in [table
.length
.. color
[ do
423 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
429 # colorize live types of the program
430 private fun do_type_coloring
: POSet[MType] do
431 # Collect types to colorize
432 var live_types
= runtime_type_analysis
.live_types
433 var live_cast_types
= runtime_type_analysis
.live_cast_types
434 var mtypes
= new HashSet[MType]
435 mtypes
.add_all
(live_types
)
436 for c
in self.box_kinds
.keys
do
437 mtypes
.add
(c
.mclass_type
)
441 var poset
= poset_from_mtypes
(mtypes
, live_cast_types
)
442 var colorer
= new POSetColorer[MType]
443 colorer
.colorize
(poset
)
444 type_ids
= colorer
.ids
445 type_colors
= colorer
.colors
446 type_tables
= build_type_tables
(poset
)
448 # VT and FT are stored with other unresolved types in the big resolution_tables
449 self.compile_resolution_tables
(mtypes
)
454 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
455 var poset
= new POSet[MType]
458 for o
in cast_types
do
459 if e
== o
then continue
461 if e
.is_subtype
(mainmodule
, null, o
) then
470 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
471 var tables
= new HashMap[MType, Array[nullable MType]]
472 for mtype
in mtypes
do
473 var table
= new Array[nullable MType]
474 for sup
in mtypes
[mtype
].greaters
do
475 var color
= type_colors
[sup
]
476 if table
.length
<= color
then
477 for i
in [table
.length
.. color
[ do
483 tables
[mtype
] = table
488 protected fun compile_resolution_tables
(mtypes
: Set[MType]) do
489 # resolution_tables is used to perform a type resolution at runtime in O(1)
491 # During the visit of the body of classes, live_unresolved_types are collected
493 # Collect all live_unresolved_types (visited in the body of classes)
495 # Determinate fo each livetype what are its possible requested anchored types
496 var mtype2unresolved
= new HashMap[MClassType, Set[MType]]
497 for mtype
in self.runtime_type_analysis
.live_types
do
498 var set
= new HashSet[MType]
499 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
500 if self.live_unresolved_types
.has_key
(cd
) then
501 set
.add_all
(self.live_unresolved_types
[cd
])
504 mtype2unresolved
[mtype
] = set
507 # Compute the table layout with the prefered method
508 var colorer
= new BucketsColorer[MType, MType]
509 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
510 resolution_tables
= self.build_resolution_tables
(mtype2unresolved
)
512 # Compile a C constant for each collected unresolved type.
513 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
514 var all_unresolved
= new HashSet[MType]
515 for t
in self.live_unresolved_types
.values
do
516 all_unresolved
.add_all
(t
)
518 var all_unresolved_types_colors
= new HashMap[MType, Int]
519 for t
in all_unresolved
do
520 if opentype_colors
.has_key
(t
) then
521 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
523 all_unresolved_types_colors
[t
] = -1
526 self.compile_color_consts
(all_unresolved_types_colors
)
529 #for k, v in unresolved_types_tables.as(not null) do
530 # print "{k}: {v.join(", ")}"
535 fun build_resolution_tables
(elements
: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do
536 var tables
= new HashMap[MClassType, Array[nullable MType]]
537 for mclasstype
, mtypes
in elements
do
538 var table
= new Array[nullable MType]
539 for mtype
in mtypes
do
540 var color
= opentype_colors
[mtype
]
541 if table
.length
<= color
then
542 for i
in [table
.length
.. color
[ do
548 tables
[mclasstype
] = table
553 # Separately compile all the method definitions of the module
554 fun compile_module_to_c
(mmodule
: MModule)
556 var old_module
= self.mainmodule
557 self.mainmodule
= mmodule
558 for cd
in mmodule
.mclassdefs
do
559 for pd
in cd
.mpropdefs
do
560 if not pd
isa MMethodDef then continue
561 var rta
= runtime_type_analysis
562 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
563 #print "compile {pd} @ {cd} @ {mmodule}"
564 var r
= pd
.separate_runtime_function
566 var r2
= pd
.virtual_runtime_function
567 if r2
!= r
then r2
.compile_to_c
(self)
569 # Generate trampolines
570 if modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
571 r2
.compile_trampolines
(self)
573 # Replace monomorphic call to a trampoline by a direct call to the virtual implementation
574 if modelbuilder
.toolcontext
.opt_substitute_monomorph
.value
then do
577 # Without RTA, monomorphic means alone (uniq name)
578 if m
.mpropdefs
.length
!= 1 then break label
580 # With RTA, monomorphic means only live methoddef
581 if not rta
.live_methoddefs
.has
(pd
) then break label
582 for md
in m
.mpropdefs
do
583 if md
!= pd
and rta
.live_methoddefs
.has
(md
) then break label
586 # Here the trick, GNU ld can substitute symbols with specific values.
587 var n2
= "CALL_" + m
.const_color
588 linker_script
.add
("{n2} = {r2.c_name};")
593 self.mainmodule
= old_module
596 # Globaly compile the type structure of a live type
597 fun compile_type_to_c
(mtype
: MType)
599 assert not mtype
.need_anchor
600 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
601 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
602 var c_name
= mtype
.c_name
603 var v
= new SeparateCompilerVisitor(self)
604 v
.add_decl
("/* runtime type {mtype} */")
606 # extern const struct type_X
607 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
609 # const struct type_X
610 v
.add_decl
("const struct type type_{c_name} = \{")
612 # type id (for cast target)
614 v
.add_decl
("{type_ids[mtype]},")
616 v
.add_decl
("-1, /*CAST DEAD*/")
620 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
622 # type color (for cast target)
624 v
.add_decl
("{type_colors[mtype]},")
626 v
.add_decl
("-1, /*CAST DEAD*/")
630 if mtype
isa MNullableType then
636 # resolution table (for receiver)
638 var mclass_type
= mtype
.as_notnullable
639 assert mclass_type
isa MClassType
640 if resolution_tables
[mclass_type
].is_empty
then
641 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
643 compile_type_resolution_table
(mtype
)
644 v
.require_declaration
("resolution_table_{c_name}")
645 v
.add_decl
("&resolution_table_{c_name},")
648 v
.add_decl
("NULL, /*DEAD*/")
651 # cast table (for receiver)
653 v
.add_decl
("{self.type_tables[mtype].length},")
655 for stype
in self.type_tables
[mtype
] do
656 if stype
== null then
657 v
.add_decl
("-1, /* empty */")
659 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
664 v
.add_decl
("0, \{\}, /*DEAD TYPE*/")
669 fun compile_type_resolution_table
(mtype
: MType) do
671 var mclass_type
= mtype
.as_notnullable
.as(MClassType)
673 # extern const struct resolution_table_X resolution_table_X
674 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
676 # const struct fts_table_X fts_table_X
678 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
679 v
.add_decl
("0, /* dummy */")
681 for t
in self.resolution_tables
[mclass_type
] do
683 v
.add_decl
("NULL, /* empty */")
685 # The table stores the result of the type resolution
686 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
687 # the value stored is tv.
688 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
689 # FIXME: What typeids means here? How can a tv not be live?
690 if type_ids
.has_key
(tv
) then
691 v
.require_declaration
("type_{tv.c_name}")
692 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
694 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
702 # Globally compile the table of the class mclass
703 # In a link-time optimisation compiler, tables are globally computed
704 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
705 fun compile_class_to_c
(mclass
: MClass)
707 var mtype
= mclass
.intro
.bound_mtype
708 var c_name
= mclass
.c_name
710 var vft
= self.method_tables
[mclass
]
711 var attrs
= self.attr_tables
[mclass
]
714 var rta
= runtime_type_analysis
715 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and mtype
.ctype
== "val*" and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
717 v
.add_decl
("/* runtime class {c_name} */")
721 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
722 v
.add_decl
("const struct class class_{c_name} = \{")
723 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
725 for i
in [0 .. vft
.length
[ do
726 var mpropdef
= vft
[i
]
727 if mpropdef
== null then
728 v
.add_decl
("NULL, /* empty */")
730 assert mpropdef
isa MMethodDef
731 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
732 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
735 var rf
= mpropdef
.virtual_runtime_function
736 v
.require_declaration
(rf
.c_name
)
737 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
744 if mtype
.ctype
!= "val*" or mtype
.mclass
.name
== "Pointer" then
745 # Is a primitive type or the Pointer class, not any other extern class
747 #Build instance struct
748 self.header
.add_decl
("struct instance_{c_name} \{")
749 self.header
.add_decl
("const struct type *type;")
750 self.header
.add_decl
("const struct class *class;")
751 self.header
.add_decl
("{mtype.ctype_extern} value;")
752 self.header
.add_decl
("\};")
754 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
757 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
758 v
.add_decl
("/* allocate {mtype} */")
759 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
760 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
761 v
.compiler
.undead_types
.add
(mtype
)
762 v
.require_declaration
("type_{c_name}")
763 v
.add
("res->type = &type_{c_name};")
764 v
.require_declaration
("class_{c_name}")
765 v
.add
("res->class = &class_{c_name};")
766 v
.add
("res->value = value;")
767 v
.add
("return (val*)res;")
770 if mtype
.mclass
.name
!= "Pointer" then return
773 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
774 v
.add_decl
("/* allocate {mtype} */")
775 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
777 v
.add_abort
("{mclass} is DEAD")
779 var res
= v
.new_named_var
(mtype
, "self")
781 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
782 v
.add
("{res}->type = type;")
783 hardening_live_type
(v
, "type")
784 v
.require_declaration
("class_{c_name}")
785 v
.add
("{res}->class = &class_{c_name};")
786 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
787 v
.add
("return {res};")
791 else if mclass
.name
== "NativeArray" then
792 #Build instance struct
793 self.header
.add_decl
("struct instance_{c_name} \{")
794 self.header
.add_decl
("const struct type *type;")
795 self.header
.add_decl
("const struct class *class;")
796 # NativeArrays are just a instance header followed by a length and an array of values
797 self.header
.add_decl
("int length;")
798 self.header
.add_decl
("val* values[0];")
799 self.header
.add_decl
("\};")
802 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
803 v
.add_decl
("/* allocate {mtype} */")
804 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
805 var res
= v
.get_name
("self")
806 v
.add_decl
("struct instance_{c_name} *{res};")
807 var mtype_elt
= mtype
.arguments
.first
808 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
809 v
.add
("{res}->type = type;")
810 hardening_live_type
(v
, "type")
811 v
.require_declaration
("class_{c_name}")
812 v
.add
("{res}->class = &class_{c_name};")
813 v
.add
("{res}->length = length;")
814 v
.add
("return (val*){res};")
817 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
818 # Is an extern class (other than Pointer and NativeString)
819 # Pointer is caught in a previous `if`, and NativeString is internal
821 var pointer_type
= mainmodule
.pointer_type
823 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
824 v
.add_decl
("/* allocate {mtype} */")
825 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
827 v
.add_abort
("{mclass} is DEAD")
829 var res
= v
.new_named_var
(mtype
, "self")
831 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
832 v
.add
("{res}->type = type;")
833 hardening_live_type
(v
, "type")
834 v
.require_declaration
("class_{c_name}")
835 v
.add
("{res}->class = &class_{c_name};")
836 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
837 v
.add
("return {res};")
844 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
845 v
.add_decl
("/* allocate {mtype} */")
846 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
848 v
.add_abort
("{mclass} is DEAD")
850 var res
= v
.new_named_var
(mtype
, "self")
852 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
853 v
.add
("{res}->type = type;")
854 hardening_live_type
(v
, "type")
855 v
.require_declaration
("class_{c_name}")
856 v
.add
("{res}->class = &class_{c_name};")
857 self.generate_init_attr
(v
, res
, mtype
)
859 v
.add
("return {res};")
864 # Add a dynamic test to ensure that the type referenced by `t` is a live type
865 fun hardening_live_type
(v
: VISITOR, t
: String)
867 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
868 v
.add
("if({t} == NULL) \{")
869 v
.add_abort
("type null")
871 v
.add
("if({t}->table_size == 0) \{")
872 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
873 v
.add_abort
("type dead")
877 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
881 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
882 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
883 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
884 protected var attr_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
886 redef fun display_stats
889 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
892 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
895 var tc
= self.modelbuilder
.toolcontext
896 tc
.info
("# implementation of method invocation",2)
897 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
898 tc
.info
("total number of invocations: {nb_invok_total}",2)
899 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
900 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
901 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
906 print
"# size of subtyping tables"
907 print
"\ttotal \tholes"
910 for t
, table
in type_tables
do
911 total
+= table
.length
912 for e
in table
do if e
== null then holes
+= 1
914 print
"\t{total}\t{holes}"
916 print
"# size of resolution tables"
917 print
"\ttotal \tholes"
920 for t
, table
in resolution_tables
do
921 total
+= table
.length
922 for e
in table
do if e
== null then holes
+= 1
924 print
"\t{total}\t{holes}"
926 print
"# size of methods tables"
927 print
"\ttotal \tholes"
930 for t
, table
in method_tables
do
931 total
+= table
.length
932 for e
in table
do if e
== null then holes
+= 1
934 print
"\t{total}\t{holes}"
936 print
"# size of attributes tables"
937 print
"\ttotal \tholes"
940 for t
, table
in attr_tables
do
941 total
+= table
.length
942 for e
in table
do if e
== null then holes
+= 1
944 print
"\t{total}\t{holes}"
947 protected var isset_checks_count
= 0
948 protected var attr_read_count
= 0
950 fun display_isset_checks
do
951 print
"# total number of compiled attribute reads"
952 print
"\t{attr_read_count}"
953 print
"# total number of compiled isset-checks"
954 print
"\t{isset_checks_count}"
957 redef fun compile_nitni_structs
959 self.header
.add_decl
"""
960 struct nitni_instance \{
961 struct nitni_instance *next,
962 *prev; /* adjacent global references in global list */
963 int count; /* number of time this global reference has been marked */
964 struct instance *value;
970 redef fun finalize_ffi_for_module
(mmodule
)
972 var old_module
= self.mainmodule
973 self.mainmodule
= mmodule
975 self.mainmodule
= old_module
979 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
980 class SeparateCompilerVisitor
981 super AbstractCompilerVisitor
983 redef type COMPILER: SeparateCompiler
985 redef fun adapt_signature
(m
, args
)
987 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
988 var recv
= args
.first
989 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
990 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
992 for i
in [0..msignature
.arity
[ do
993 var t
= msignature
.mparameters
[i
].mtype
994 if i
== msignature
.vararg_rank
then
997 args
[i
+1] = self.autobox
(args
[i
+1], t
)
1001 redef fun unbox_signature_extern
(m
, args
)
1003 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
1004 if not m
.mproperty
.is_init
and m
.is_extern
then
1005 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
1007 for i
in [0..msignature
.arity
[ do
1008 var t
= msignature
.mparameters
[i
].mtype
1009 if i
== msignature
.vararg_rank
then
1012 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
1016 redef fun autobox
(value
, mtype
)
1018 if value
.mtype
== mtype
then
1020 else if value
.mtype
.ctype
== "val*" and mtype
.ctype
== "val*" then
1022 else if value
.mtype
.ctype
== "val*" then
1023 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1024 else if mtype
.ctype
== "val*" then
1025 var valtype
= value
.mtype
.as(MClassType)
1026 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1027 valtype
= compiler
.mainmodule
.pointer_type
1029 var res
= self.new_var
(mtype
)
1030 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1031 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1032 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1035 self.require_declaration
("BOX_{valtype.c_name}")
1036 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1038 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1039 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1040 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1043 # Bad things will appen!
1044 var res
= self.new_var
(mtype
)
1045 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1046 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); show_backtrace(1);")
1051 redef fun unbox_extern
(value
, mtype
)
1053 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1054 mtype
.mclass
.name
!= "NativeString" then
1055 var pointer_type
= compiler
.mainmodule
.pointer_type
1056 var res
= self.new_var_extern
(mtype
)
1057 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1064 redef fun box_extern
(value
, mtype
)
1066 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1067 mtype
.mclass
.name
!= "NativeString" then
1068 var valtype
= compiler
.mainmodule
.pointer_type
1069 var res
= self.new_var
(mtype
)
1070 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1071 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1072 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1075 self.require_declaration
("BOX_{valtype.c_name}")
1076 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1077 self.require_declaration
("type_{mtype.c_name}")
1078 self.add
("{res}->type = &type_{mtype.c_name};")
1079 self.require_declaration
("class_{mtype.c_name}")
1080 self.add
("{res}->class = &class_{mtype.c_name};")
1087 # Return a C expression returning the runtime type structure of the value
1088 # The point of the method is to works also with primitives types.
1089 fun type_info
(value
: RuntimeVariable): String
1091 if value
.mtype
.ctype
== "val*" then
1092 return "{value}->type"
1094 compiler
.undead_types
.add
(value
.mtype
)
1095 self.require_declaration
("type_{value.mtype.c_name}")
1096 return "(&type_{value.mtype.c_name})"
1100 redef fun compile_callsite
(callsite
, args
)
1102 var rta
= compiler
.runtime_type_analysis
1103 var mmethod
= callsite
.mproperty
1104 # TODO: Inlining of new-style constructors with initializers
1105 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1106 var tgs
= rta
.live_targets
(callsite
)
1107 if tgs
.length
== 1 then
1109 var res0
= before_send
(mmethod
, args
)
1110 var res
= call
(tgs
.first
, tgs
.first
.mclassdef
.bound_mtype
, args
)
1111 if res0
!= null then
1113 self.assign
(res0
, res
)
1116 add
("\}") # close the before_send
1122 redef fun send
(mmethod
, arguments
)
1124 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1125 # In order to shortcut the primitive, we need to find the most specific method
1126 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1127 var m
= self.compiler
.mainmodule
1128 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1129 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1130 self.compiler
.mainmodule
= m
1134 return table_send
(mmethod
, arguments
, mmethod
)
1137 # Handle common special cases before doing the effective method invocation
1138 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1139 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1140 # Client must not forget to close the } after them.
1142 # The value returned is the result of the common special cases.
1143 # If not null, client must compile it with the result of their own effective method invocation.
1145 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1146 # is generated to cancel the effective method invocation that will follow
1147 # TODO: find a better approach
1148 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1150 var res
: nullable RuntimeVariable = null
1151 var recv
= arguments
.first
1152 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1153 var maybenull
= (recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType) and consider_null
1155 self.add
("if ({recv} == NULL) \{")
1156 if mmethod
.name
== "==" or mmethod
.name
== "is_same_instance" then
1157 res
= self.new_var
(bool_type
)
1158 var arg
= arguments
[1]
1159 if arg
.mcasttype
isa MNullableType then
1160 self.add
("{res} = ({arg} == NULL);")
1161 else if arg
.mcasttype
isa MNullType then
1162 self.add
("{res} = 1; /* is null */")
1164 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1166 else if mmethod
.name
== "!=" then
1167 res
= self.new_var
(bool_type
)
1168 var arg
= arguments
[1]
1169 if arg
.mcasttype
isa MNullableType then
1170 self.add
("{res} = ({arg} != NULL);")
1171 else if arg
.mcasttype
isa MNullType then
1172 self.add
("{res} = 0; /* is null */")
1174 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1177 self.add_abort
("Receiver is null")
1179 self.add
("\} else \{")
1183 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=" or mmethod
.name
== "is_same_instance") then
1184 # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
1185 var arg
= arguments
[1]
1186 if arg
.mcasttype
isa MNullType then
1187 if res
== null then res
= self.new_var
(bool_type
)
1188 if mmethod
.name
== "!=" then
1189 self.add
("{res} = 1; /* arg is null and recv is not */")
1190 else # `==` and `is_same_instance`
1191 self.add
("{res} = 0; /* arg is null but recv is not */")
1193 self.add
("\}") # closes the null case
1194 self.add
("if (0) \{") # what follow is useless, CC will drop it
1200 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], mentity
: MEntity): nullable RuntimeVariable
1202 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1203 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1205 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1206 var recv
= arguments
.first
1208 var res0
= before_send
(mmethod
, arguments
)
1210 var runtime_function
= mmethod
.intro
.virtual_runtime_function
1211 var msignature
= runtime_function
.called_signature
1213 var res
: nullable RuntimeVariable
1214 var ret
= msignature
.return_mtype
1218 res
= self.new_var
(ret
)
1221 var ss
= new FlatBuffer
1224 for i
in [0..msignature
.arity
[ do
1225 var a
= arguments
[i
+1]
1226 var t
= msignature
.mparameters
[i
].mtype
1227 if i
== msignature
.vararg_rank
then
1228 t
= arguments
[i
+1].mcasttype
1230 a
= self.autobox
(a
, t
)
1234 var const_color
= mentity
.const_color
1236 if not compiler
.modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
1237 self.require_declaration
(const_color
)
1238 call
= "(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1240 var callsym
= "CALL_" + const_color
1241 self.require_declaration
(callsym
)
1242 call
= "{callsym}({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1246 self.add
("{res} = {call};")
1251 if res0
!= null then
1257 self.add
("\}") # closes the null case
1262 redef fun call
(mmethoddef
, recvtype
, arguments
)
1264 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1266 var res
: nullable RuntimeVariable
1267 var ret
= mmethoddef
.msignature
.return_mtype
1271 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1272 res
= self.new_var
(ret
)
1275 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1276 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1277 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1278 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1279 var frame
= new StaticFrame(self, mmethoddef
, recvtype
, arguments
)
1280 frame
.returnlabel
= self.get_name
("RET_LABEL")
1281 frame
.returnvar
= res
1282 var old_frame
= self.frame
1284 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1285 mmethoddef
.compile_inside_to_c
(self, arguments
)
1286 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1288 self.frame
= old_frame
1291 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1292 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1295 self.adapt_signature
(mmethoddef
, arguments
)
1297 self.require_declaration
(mmethoddef
.c_name
)
1299 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1302 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1308 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1310 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1311 # In order to shortcut the primitive, we need to find the most specific method
1312 # However, because of performance (no flattening), we always work on the realmainmodule
1313 var main
= self.compiler
.mainmodule
1314 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1315 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1316 self.compiler
.mainmodule
= main
1319 return table_send
(m
.mproperty
, arguments
, m
)
1322 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1324 # A vararg must be stored into an new array
1325 # The trick is that the dymaic type of the array may depends on the receiver
1326 # of the method (ie recv) if the static type is unresolved
1327 # This is more complex than usual because the unresolved type must not be resolved
1328 # with the current receiver (ie self).
1329 # Therefore to isolate the resolution from self, a local StaticFrame is created.
1330 # One can see this implementation as an inlined method of the receiver whose only
1331 # job is to allocate the array
1332 var old_frame
= self.frame
1333 var frame
= new StaticFrame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1335 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1336 var res
= self.array_instance
(varargs
, elttype
)
1337 self.frame
= old_frame
1341 redef fun isset_attribute
(a
, recv
)
1343 self.check_recv_notnull
(recv
)
1344 var res
= self.new_var
(bool_type
)
1346 # What is the declared type of the attribute?
1347 var mtype
= a
.intro
.static_mtype
.as(not null)
1348 var intromclassdef
= a
.intro
.mclassdef
1349 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1351 if mtype
isa MNullableType then
1352 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1356 self.require_declaration
(a
.const_color
)
1357 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1358 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1361 if mtype
.ctype
== "val*" then
1362 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1364 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1370 redef fun read_attribute
(a
, recv
)
1372 self.check_recv_notnull
(recv
)
1374 # What is the declared type of the attribute?
1375 var ret
= a
.intro
.static_mtype
.as(not null)
1376 var intromclassdef
= a
.intro
.mclassdef
1377 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1379 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1380 self.compiler
.attr_read_count
+= 1
1381 self.add
("count_attr_reads++;")
1384 self.require_declaration
(a
.const_color
)
1385 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1386 # Get the attribute or a box (ie. always a val*)
1387 var cret
= self.object_type
.as_nullable
1388 var res
= self.new_var
(cret
)
1391 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1393 # Check for Uninitialized attribute
1394 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1395 self.add
("if (unlikely({res} == NULL)) \{")
1396 self.add_abort
("Uninitialized attribute {a.name}")
1399 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1400 self.compiler
.isset_checks_count
+= 1
1401 self.add
("count_isset_checks++;")
1405 # Return the attribute or its unboxed version
1406 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1407 return self.autobox
(res
, ret
)
1409 var res
= self.new_var
(ret
)
1410 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1412 # Check for Uninitialized attribute
1413 if ret
.ctype
== "val*" and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1414 self.add
("if (unlikely({res} == NULL)) \{")
1415 self.add_abort
("Uninitialized attribute {a.name}")
1417 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1418 self.compiler
.isset_checks_count
+= 1
1419 self.add
("count_isset_checks++;")
1427 redef fun write_attribute
(a
, recv
, value
)
1429 self.check_recv_notnull
(recv
)
1431 # What is the declared type of the attribute?
1432 var mtype
= a
.intro
.static_mtype
.as(not null)
1433 var intromclassdef
= a
.intro
.mclassdef
1434 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1436 # Adapt the value to the declared type
1437 value
= self.autobox
(value
, mtype
)
1439 self.require_declaration
(a
.const_color
)
1440 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1441 var attr
= "{recv}->attrs[{a.const_color}]"
1442 if mtype
.ctype
!= "val*" then
1443 assert mtype
isa MClassType
1444 # The attribute is primitive, thus we store it in a box
1445 # The trick is to create the box the first time then resuse the box
1446 self.add
("if ({attr} != NULL) \{")
1447 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1448 self.add
("\} else \{")
1449 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1450 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1453 # The attribute is not primitive, thus store it direclty
1454 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1457 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1461 # Check that mtype is a live open type
1462 fun hardening_live_open_type
(mtype
: MType)
1464 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1465 self.require_declaration
(mtype
.const_color
)
1466 var col
= mtype
.const_color
1467 self.add
("if({col} == -1) \{")
1468 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1469 self.add_abort
("open type dead")
1473 # Check that mtype it a pointer to a live cast type
1474 fun hardening_cast_type
(t
: String)
1476 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1477 add
("if({t} == NULL) \{")
1478 add_abort
("cast type null")
1480 add
("if({t}->id == -1 || {t}->color == -1) \{")
1481 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1482 add_abort
("cast type dead")
1486 redef fun init_instance
(mtype
)
1488 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1489 var compiler
= self.compiler
1490 if mtype
isa MGenericType and mtype
.need_anchor
then
1491 hardening_live_open_type
(mtype
)
1492 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1493 var recv
= self.frame
.arguments
.first
1494 var recv_type_info
= self.type_info
(recv
)
1495 self.require_declaration
(mtype
.const_color
)
1496 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1498 compiler
.undead_types
.add
(mtype
)
1499 self.require_declaration
("type_{mtype.c_name}")
1500 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1503 redef fun type_test
(value
, mtype
, tag
)
1505 self.add
("/* {value.inspect} isa {mtype} */")
1506 var compiler
= self.compiler
1508 var recv
= self.frame
.arguments
.first
1509 var recv_type_info
= self.type_info
(recv
)
1511 var res
= self.new_var
(bool_type
)
1513 var cltype
= self.get_name
("cltype")
1514 self.add_decl
("int {cltype};")
1515 var idtype
= self.get_name
("idtype")
1516 self.add_decl
("int {idtype};")
1518 var maybe_null
= self.maybe_null
(value
)
1519 var accept_null
= "0"
1521 if ntype
isa MNullableType then
1526 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1527 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1528 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1529 self.compiler
.count_type_test_skipped
[tag
] += 1
1530 self.add
("count_type_test_skipped_{tag}++;")
1535 if ntype
.need_anchor
then
1536 var type_struct
= self.get_name
("type_struct")
1537 self.add_decl
("const struct type* {type_struct};")
1539 # Either with resolution_table with a direct resolution
1540 hardening_live_open_type
(mtype
)
1541 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1542 self.require_declaration
(mtype
.const_color
)
1543 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1544 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1545 self.compiler
.count_type_test_unresolved
[tag
] += 1
1546 self.add
("count_type_test_unresolved_{tag}++;")
1548 hardening_cast_type
(type_struct
)
1549 self.add
("{cltype} = {type_struct}->color;")
1550 self.add
("{idtype} = {type_struct}->id;")
1551 if maybe_null
and accept_null
== "0" then
1552 var is_nullable
= self.get_name
("is_nullable")
1553 self.add_decl
("short int {is_nullable};")
1554 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1555 accept_null
= is_nullable
.to_s
1557 else if ntype
isa MClassType then
1558 compiler
.undead_types
.add
(mtype
)
1559 self.require_declaration
("type_{mtype.c_name}")
1560 hardening_cast_type
("(&type_{mtype.c_name})")
1561 self.add
("{cltype} = type_{mtype.c_name}.color;")
1562 self.add
("{idtype} = type_{mtype.c_name}.id;")
1563 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1564 self.compiler
.count_type_test_resolved
[tag
] += 1
1565 self.add
("count_type_test_resolved_{tag}++;")
1568 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); show_backtrace(1);")
1571 # check color is in table
1573 self.add
("if({value} == NULL) \{")
1574 self.add
("{res} = {accept_null};")
1575 self.add
("\} else \{")
1577 var value_type_info
= self.type_info
(value
)
1578 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1579 self.add
("{res} = 0;")
1580 self.add
("\} else \{")
1581 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1590 redef fun is_same_type_test
(value1
, value2
)
1592 var res
= self.new_var
(bool_type
)
1593 # Swap values to be symetric
1594 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1599 if value1
.mtype
.ctype
!= "val*" then
1600 if value2
.mtype
== value1
.mtype
then
1601 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1602 else if value2
.mtype
.ctype
!= "val*" then
1603 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1605 var mtype1
= value1
.mtype
.as(MClassType)
1606 self.require_declaration
("class_{mtype1.c_name}")
1607 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1610 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
1615 redef fun class_name_string
(value
)
1617 var res
= self.get_name
("var_class_name")
1618 self.add_decl
("const char* {res};")
1619 if value
.mtype
.ctype
== "val*" then
1620 self.add
"{res} = {value} == NULL ? \"null\
" : {value}->type->name;"
1621 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1622 value
.mtype
.as(MClassType).name
!= "NativeString" then
1623 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1625 self.require_declaration
("type_{value.mtype.c_name}")
1626 self.add
"{res} = type_{value.mtype.c_name}.name;"
1631 redef fun equal_test
(value1
, value2
)
1633 var res
= self.new_var
(bool_type
)
1634 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1639 if value1
.mtype
.ctype
!= "val*" then
1640 if value2
.mtype
== value1
.mtype
then
1641 self.add
("{res} = {value1} == {value2};")
1642 else if value2
.mtype
.ctype
!= "val*" then
1643 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1645 var mtype1
= value1
.mtype
.as(MClassType)
1646 self.require_declaration
("class_{mtype1.c_name}")
1647 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1648 self.add
("if ({res}) \{")
1649 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1654 var maybe_null
= true
1655 var test
= new Array[String]
1656 var t1
= value1
.mcasttype
1657 if t1
isa MNullableType then
1658 test
.add
("{value1} != NULL")
1663 var t2
= value2
.mcasttype
1664 if t2
isa MNullableType then
1665 test
.add
("{value2} != NULL")
1671 var incompatible
= false
1673 if t1
.ctype
!= "val*" then
1676 # No need to compare class
1677 else if t2
.ctype
!= "val*" then
1679 else if can_be_primitive
(value2
) then
1680 test
.add
("{value1}->class == {value2}->class")
1684 else if t2
.ctype
!= "val*" then
1686 if can_be_primitive
(value1
) then
1687 test
.add
("{value1}->class == {value2}->class")
1695 if incompatible
then
1697 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1700 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1704 if primitive
!= null then
1705 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1706 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1707 test
.add
("{value1}->class == {value2}->class")
1708 var s
= new Array[String]
1709 for t
, v
in self.compiler
.box_kinds
do
1710 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1712 test
.add
("({s.join(" || ")})")
1714 self.add
("{res} = {value1} == {value2};")
1717 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1721 fun can_be_primitive
(value
: RuntimeVariable): Bool
1723 var t
= value
.mcasttype
.as_notnullable
1724 if not t
isa MClassType then return false
1725 var k
= t
.mclass
.kind
1726 return k
== interface_kind
or t
.ctype
!= "val*"
1729 fun maybe_null
(value
: RuntimeVariable): Bool
1731 var t
= value
.mcasttype
1732 return t
isa MNullableType or t
isa MNullType
1735 redef fun array_instance
(array
, elttype
)
1737 var nclass
= self.get_class
("NativeArray")
1738 var arrayclass
= self.get_class
("Array")
1739 var arraytype
= arrayclass
.get_mtype
([elttype
])
1740 var res
= self.init_instance
(arraytype
)
1741 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1742 var length
= self.int_instance
(array
.length
)
1743 var nat
= native_array_instance
(elttype
, length
)
1744 for i
in [0..array
.length
[ do
1745 var r
= self.autobox
(array
[i
], self.object_type
)
1746 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
1748 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
1753 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
1755 var mtype
= self.get_class
("NativeArray").get_mtype
([elttype
])
1756 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1757 assert mtype
isa MGenericType
1758 var compiler
= self.compiler
1759 if mtype
.need_anchor
then
1760 hardening_live_open_type
(mtype
)
1761 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1762 var recv
= self.frame
.arguments
.first
1763 var recv_type_info
= self.type_info
(recv
)
1764 self.require_declaration
(mtype
.const_color
)
1765 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1767 compiler
.undead_types
.add
(mtype
)
1768 self.require_declaration
("type_{mtype.c_name}")
1769 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
1772 redef fun native_array_def
(pname
, ret_type
, arguments
)
1774 var elttype
= arguments
.first
.mtype
1775 var nclass
= self.get_class
("NativeArray")
1776 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
1777 if pname
== "[]" then
1778 self.ret
(self.new_expr
("{recv}[{arguments[1]}]", ret_type
.as(not null)))
1780 else if pname
== "[]=" then
1781 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
1783 else if pname
== "length" then
1784 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
1786 else if pname
== "copy_to" then
1787 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
1788 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
1793 redef fun calloc_array
(ret_type
, arguments
)
1795 var mclass
= self.get_class
("ArrayCapable")
1796 var ft
= mclass
.mparameters
.first
1797 var res
= self.native_array_instance
(ft
, arguments
[1])
1801 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
1802 assert mtype
.need_anchor
1803 var compiler
= self.compiler
1804 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
1805 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
1807 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
1811 redef class MMethodDef
1812 # The C function associated to a mmethoddef
1813 fun separate_runtime_function
: SeparateRuntimeFunction
1815 var res
= self.separate_runtime_function_cache
1817 var recv
= mclassdef
.bound_mtype
1818 var msignature
= msignature
.resolve_for
(recv
, recv
, mclassdef
.mmodule
, true)
1819 res
= new SeparateRuntimeFunction(self, recv
, msignature
, c_name
)
1820 self.separate_runtime_function_cache
= res
1824 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
1826 # The C function associated to a mmethoddef, that can be stored into a VFT of a class
1827 # The first parameter (the reciever) is always typed by val* in order to accept an object value
1828 # The C-signature is always compatible with the intro
1829 fun virtual_runtime_function
: SeparateRuntimeFunction
1831 var res
= self.virtual_runtime_function_cache
1833 # Because the function is virtual, the signature must match the one of the original class
1834 var intromclassdef
= mproperty
.intro
.mclassdef
1835 var recv
= intromclassdef
.bound_mtype
1837 res
= separate_runtime_function
1838 if res
.called_recv
== recv
then
1839 self.virtual_runtime_function_cache
= res
1843 var msignature
= mproperty
.intro
.msignature
.resolve_for
(recv
, recv
, intromclassdef
.mmodule
, true)
1845 if recv
.ctype
== res
.called_recv
.ctype
and msignature
.c_equiv
(res
.called_signature
) then
1846 self.virtual_runtime_function_cache
= res
1850 res
= new SeparateRuntimeFunction(self, recv
, msignature
, "VIRTUAL_{c_name}")
1851 self.virtual_runtime_function_cache
= res
1856 private var virtual_runtime_function_cache
: nullable SeparateRuntimeFunction
1859 redef class MSignature
1860 # Does the C-version of `self` the same than the C-version of `other`?
1861 fun c_equiv
(other
: MSignature): Bool
1863 if self == other
then return true
1864 if arity
!= other
.arity
then return false
1865 for i
in [0..arity
[ do
1866 if mparameters
[i
].mtype
.ctype
!= other
.mparameters
[i
].mtype
.ctype
then return false
1868 if return_mtype
!= other
.return_mtype
then
1869 if return_mtype
== null or other
.return_mtype
== null then return false
1870 if return_mtype
.ctype
!= other
.return_mtype
.ctype
then return false
1876 # The C function associated to a methoddef separately compiled
1877 class SeparateRuntimeFunction
1878 super AbstractRuntimeFunction
1880 # The call-side static receiver
1881 var called_recv
: MType
1883 # The call-side static signature
1884 var called_signature
: MSignature
1886 # The name on the compiled method
1887 redef var build_c_name
: String
1889 # Statically call the original body instead
1890 var is_thunk
= false
1892 redef fun to_s
do return self.mmethoddef
.to_s
1894 # The C return type (something or `void`)
1895 var c_ret
: String is lazy
do
1896 var ret
= called_signature
.return_mtype
1904 # The C signature (only the parmeter part)
1905 var c_sig
: String is lazy
do
1906 var sig
= new FlatBuffer
1907 sig
.append
("({called_recv.ctype} self")
1908 for i
in [0..called_signature
.arity
[ do
1909 var mtype
= called_signature
.mparameters
[i
].mtype
1910 if i
== called_signature
.vararg_rank
then
1911 mtype
= mmethoddef
.mclassdef
.mmodule
.get_primitive_class
("Array").get_mtype
([mtype
])
1913 sig
.append
(", {mtype.ctype} p{i}")
1919 # The C type for the function pointer.
1920 var c_funptrtype
: String is lazy
do return "{c_ret}(*){c_sig}"
1922 # The arguments, as generated by `compile_to_c`
1923 private var arguments
: Array[RuntimeVariable] is noinit
1925 redef fun compile_to_c
(compiler
)
1927 var mmethoddef
= self.mmethoddef
1929 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1930 var v
= compiler
.new_visitor
1931 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
1932 var arguments
= new Array[RuntimeVariable]
1933 var frame
= new StaticFrame(v
, mmethoddef
, recv
, arguments
)
1936 var msignature
= called_signature
1937 var ret
= called_signature
.return_mtype
1939 var sig
= new FlatBuffer
1940 var comment
= new FlatBuffer
1943 sig
.append
(self.c_name
)
1945 comment
.append
("({selfvar}: {selfvar.mtype}")
1946 arguments
.add
(selfvar
)
1947 for i
in [0..msignature
.arity
[ do
1948 var mtype
= msignature
.mparameters
[i
].mtype
1949 if i
== msignature
.vararg_rank
then
1950 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
1952 comment
.append
(", {mtype}")
1953 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
1954 arguments
.add
(argvar
)
1958 comment
.append
(": {ret}")
1960 compiler
.provide_declaration
(self.c_name
, "{sig};")
1961 self.arguments
= arguments
.to_a
1963 v
.add_decl
("/* method {self} for {comment} */")
1964 v
.add_decl
("{sig} \{")
1966 frame
.returnvar
= v
.new_var
(ret
)
1968 frame
.returnlabel
= v
.get_name
("RET_LABEL")
1971 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
1973 assert subret
!= null
1974 v
.assign
(frame
.returnvar
.as(not null), subret
)
1977 mmethoddef
.compile_inside_to_c
(v
, arguments
)
1980 v
.add
("{frame.returnlabel.as(not null)}:;")
1982 v
.add
("return {frame.returnvar.as(not null)};")
1985 compiler
.names
[self.c_name
] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
1988 fun compile_trampolines
(compiler
: SeparateCompiler)
1990 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1991 var selfvar
= arguments
.first
1992 var ret
= called_signature
.return_mtype
1994 if mmethoddef
.is_intro
and recv
.ctype
== "val*" then
1995 var m
= mmethoddef
.mproperty
1996 var n2
= "CALL_" + m
.const_color
1997 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
1998 var v2
= compiler
.new_visitor
1999 v2
.add
"{c_ret} {n2}{c_sig} \{"
2000 v2
.require_declaration
(m
.const_color
)
2001 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2003 v2
.add
"return {call}"
2011 if mmethoddef
.has_supercall
and recv
.ctype
== "val*" then
2013 var n2
= "CALL_" + m
.const_color
2014 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
2015 var v2
= compiler
.new_visitor
2016 v2
.add
"{c_ret} {n2}{c_sig} \{"
2017 v2
.require_declaration
(m
.const_color
)
2018 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
2020 v2
.add
"return {call}"
2031 var const_color
: String is lazy
do return "COLOR_{c_name}"
2034 interface PropertyLayoutElement end
2036 redef class MProperty
2037 super PropertyLayoutElement
2040 redef class MPropDef
2041 super PropertyLayoutElement
2044 redef class AMethPropdef
2045 # The semi-global compilation does not support inlining calls to extern news
2046 redef fun can_inline
2049 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false