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")
37 # --inline-coloring-numbers
38 var opt_inline_coloring_numbers
= new OptionBool("Inline colors and ids (semi-global)", "--inline-coloring-numbers")
39 # --inline-some-methods
40 var opt_inline_some_methods
= new OptionBool("Allow the separate compiler to inline some methods (semi-global)", "--inline-some-methods")
41 # --direct-call-monomorph
42 var opt_direct_call_monomorph
= new OptionBool("Allow the separate compiler to direct call monomorph sites (semi-global)", "--direct-call-monomorph")
44 var opt_skip_dead_methods
= new OptionBool("Do not compile dead methods (semi-global)", "--skip-dead-methods")
46 var opt_semi_global
= new OptionBool("Enable all semi-global optimizations", "--semi-global")
47 # --no-colo-dead-methods
48 var opt_colo_dead_methods
= new OptionBool("Force colorization of dead methods", "--colo-dead-methods")
50 var opt_tables_metrics
= new OptionBool("Enable static size measuring of tables used for vft, typing and resolution", "--tables-metrics")
55 self.option_context
.add_option
(self.opt_separate
)
56 self.option_context
.add_option
(self.opt_no_inline_intern
)
57 self.option_context
.add_option
(self.opt_no_union_attribute
)
58 self.option_context
.add_option
(self.opt_no_shortcut_equate
, opt_colors_are_symbols
, opt_trampoline_call
)
59 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
)
60 self.option_context
.add_option
(self.opt_colo_dead_methods
)
61 self.option_context
.add_option
(self.opt_tables_metrics
)
64 redef fun process_options
(args
)
69 if tc
.opt_semi_global
.value
then
70 tc
.opt_inline_coloring_numbers
.value
= true
71 tc
.opt_inline_some_methods
.value
= true
72 tc
.opt_direct_call_monomorph
.value
= true
73 tc
.opt_skip_dead_methods
.value
= true
77 var separate_compiler_phase
= new SeparateCompilerPhase(self, null)
80 class SeparateCompilerPhase
82 redef fun process_mainmodule
(mainmodule
, given_mmodules
) do
83 if not toolcontext
.opt_separate
.value
then return
85 var modelbuilder
= toolcontext
.modelbuilder
86 var analysis
= modelbuilder
.do_rapid_type_analysis
(mainmodule
)
87 modelbuilder
.run_separate_compiler
(mainmodule
, analysis
)
91 redef class ModelBuilder
92 fun run_separate_compiler
(mainmodule
: MModule, runtime_type_analysis
: nullable RapidTypeAnalysis)
95 self.toolcontext
.info
("*** GENERATING C ***", 1)
97 var compiler
= new SeparateCompiler(mainmodule
, self, runtime_type_analysis
)
98 compiler
.do_compilation
99 compiler
.display_stats
102 self.toolcontext
.info
("*** END GENERATING C: {time1-time0} ***", 2)
103 write_and_make
(compiler
)
106 # Count number of invocations by VFT
107 private var nb_invok_by_tables
= 0
108 # Count number of invocations by direct call
109 private var nb_invok_by_direct
= 0
110 # Count number of invocations by inlining
111 private var nb_invok_by_inline
= 0
114 # Singleton that store the knowledge about the separate compilation process
115 class SeparateCompiler
116 super AbstractCompiler
118 redef type VISITOR: SeparateCompilerVisitor
120 # The result of the RTA (used to know live types and methods)
121 var runtime_type_analysis
: nullable RapidTypeAnalysis
123 private var undead_types
: Set[MType] = new HashSet[MType]
124 private var live_unresolved_types
: Map[MClassDef, Set[MType]] = new HashMap[MClassDef, HashSet[MType]]
126 private var type_ids
: Map[MType, Int] is noinit
127 private var type_colors
: Map[MType, Int] is noinit
128 private var opentype_colors
: Map[MType, Int] is noinit
129 protected var method_colors
: Map[PropertyLayoutElement, Int] is noinit
130 protected var attr_colors
: Map[MAttribute, Int] is noinit
133 var file
= new_file
("nit.common")
134 self.header
= new CodeWriter(file
)
135 self.compile_box_kinds
138 redef fun do_compilation
141 compiler
.compile_header
143 var c_name
= mainmodule
.c_name
145 # compile class structures
146 modelbuilder
.toolcontext
.info
("Property coloring", 2)
147 compiler
.new_file
("{c_name}.classes")
148 compiler
.do_property_coloring
149 for m
in mainmodule
.in_importation
.greaters
do
150 for mclass
in m
.intro_mclasses
do
151 #if mclass.kind == abstract_kind or mclass.kind == interface_kind then continue
152 compiler
.compile_class_to_c
(mclass
)
156 # The main function of the C
157 compiler
.new_file
("{c_name}.main")
158 compiler
.compile_nitni_global_ref_functions
159 compiler
.compile_main_function
160 compiler
.compile_finalizer_function
163 for m
in mainmodule
.in_importation
.greaters
do
164 modelbuilder
.toolcontext
.info
("Generate C for module {m.full_name}", 2)
165 compiler
.new_file
("{m.c_name}.sep")
166 compiler
.compile_module_to_c
(m
)
169 # compile live & cast type structures
170 modelbuilder
.toolcontext
.info
("Type coloring", 2)
171 compiler
.new_file
("{c_name}.types")
172 compiler
.compile_types
175 # Color and compile type structures and cast information
180 var mtypes
= compiler
.do_type_coloring
182 compiler
.compile_type_to_c
(t
)
184 # compile remaining types structures (useless but needed for the symbol resolution at link-time)
185 for t
in compiler
.undead_types
do
186 if mtypes
.has
(t
) then continue
187 compiler
.compile_type_to_c
(t
)
192 redef fun compile_header_structs
do
193 self.header
.add_decl
("typedef void(*nitmethod_t)(void); /* general C type representing a Nit method. */")
194 self.compile_header_attribute_structs
195 self.header
.add_decl
("struct class \{ int box_kind; nitmethod_t vft[]; \}; /* general C type representing a Nit class. */")
197 # With resolution_table_table, all live type resolution are stored in a big table: resolution_table
198 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. */")
199 self.header
.add_decl
("struct instance \{ const struct type *type; const struct class *class; nitattribute_t attrs[]; \}; /* general C type representing a Nit instance. */")
200 self.header
.add_decl
("struct types \{ int dummy; const struct type *types[]; \}; /* a list types (used for vts, fts and unresolved lists). */")
201 self.header
.add_decl
("typedef struct instance val; /* general C type representing a Nit instance. */")
204 fun compile_header_attribute_structs
206 if modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
207 self.header
.add_decl
("typedef void* nitattribute_t; /* general C type representing a Nit attribute. */")
209 self.header
.add_decl
("typedef union \{")
210 self.header
.add_decl
("void* val;")
211 for c
, v
in self.box_kinds
do
212 var t
= c
.mclass_type
214 # `Pointer` reuse the `val` field
215 if t
.mclass
.name
== "Pointer" then continue
217 self.header
.add_decl
("{t.ctype_extern} {t.ctypename};")
219 self.header
.add_decl
("\} nitattribute_t; /* general C type representing a Nit attribute. */")
223 fun compile_box_kinds
225 # Collect all bas box class
226 # FIXME: this is not completely fine with a separate compilation scheme
227 for classname
in ["Int", "Bool", "Char", "Float", "NativeString", "Pointer"] do
228 var classes
= self.mainmodule
.model
.get_mclasses_by_name
(classname
)
229 if classes
== null then continue
230 assert classes
.length
== 1 else print classes
.join
(", ")
231 self.box_kinds
[classes
.first
] = self.box_kinds
.length
+ 1
235 var box_kinds
= new HashMap[MClass, Int]
237 fun box_kind_of
(mclass
: MClass): Int
239 #var pointer_type = self.mainmodule.pointer_type
240 #if mclass.mclass_type.ctype == "val*" or mclass.mclass_type.is_subtype(self.mainmodule, mclass.mclass_type pointer_type) then
241 if mclass
.mclass_type
.ctype_extern
== "val*" then
243 else if mclass
.kind
== extern_kind
and mclass
.name
!= "NativeString" then
244 return self.box_kinds
[self.mainmodule
.get_primitive_class
("Pointer")]
246 return self.box_kinds
[mclass
]
251 fun compile_color_consts
(colors
: Map[Object, Int]) do
253 for m
, c
in colors
do
254 compile_color_const
(v
, m
, c
)
258 fun compile_color_const
(v
: SeparateCompilerVisitor, m
: Object, color
: Int) do
259 if color_consts_done
.has
(m
) then return
260 if m
isa MEntity then
261 if modelbuilder
.toolcontext
.opt_inline_coloring_numbers
.value
then
262 self.provide_declaration
(m
.const_color
, "#define {m.const_color} {color}")
263 else if not modelbuilder
.toolcontext
.opt_colors_are_symbols
.value
or not v
.compiler
.target_platform
.supports_linker_script
then
264 self.provide_declaration
(m
.const_color
, "extern const int {m.const_color};")
265 v
.add
("const int {m.const_color} = {color};")
267 # The color 'C' is the ``address'' of a false static variable 'XC'
268 self.provide_declaration
(m
.const_color
, "#define {m.const_color} ((long)&X{m.const_color})\nextern const void X{m.const_color};")
269 if color
== -1 then color
= 0 # Symbols cannot be negative, so just use 0 for dead things
270 # Teach the linker that the address of 'XC' is `color`.
271 linker_script
.add
("X{m.const_color} = {color};")
276 color_consts_done
.add
(m
)
279 private var color_consts_done
= new HashSet[Object]
281 # colorize classe properties
282 fun do_property_coloring
do
284 var rta
= runtime_type_analysis
287 var poset
= mainmodule
.flatten_mclass_hierarchy
288 var mclasses
= new HashSet[MClass].from
(poset
)
289 var colorer
= new POSetColorer[MClass]
290 colorer
.colorize
(poset
)
292 # The dead methods, still need to provide a dead color symbol
293 var dead_methods
= new Array[MMethod]
295 # lookup properties to build layout with
296 var mmethods
= new HashMap[MClass, Set[PropertyLayoutElement]]
297 var mattributes
= new HashMap[MClass, Set[MAttribute]]
298 for mclass
in mclasses
do
299 mmethods
[mclass
] = new HashSet[PropertyLayoutElement]
300 mattributes
[mclass
] = new HashSet[MAttribute]
301 for mprop
in self.mainmodule
.properties
(mclass
) do
302 if mprop
isa MMethod then
303 if not modelbuilder
.toolcontext
.opt_colo_dead_methods
.value
and rta
!= null and not rta
.live_methods
.has
(mprop
) then
304 dead_methods
.add
(mprop
)
307 mmethods
[mclass
].add
(mprop
)
308 else if mprop
isa MAttribute then
309 mattributes
[mclass
].add
(mprop
)
314 # Collect all super calls (dead or not)
315 var all_super_calls
= new HashSet[MMethodDef]
316 for mmodule
in self.mainmodule
.in_importation
.greaters
do
317 for mclassdef
in mmodule
.mclassdefs
do
318 for mpropdef
in mclassdef
.mpropdefs
do
319 if not mpropdef
isa MMethodDef then continue
320 if mpropdef
.has_supercall
then
321 all_super_calls
.add
(mpropdef
)
327 # lookup super calls and add it to the list of mmethods to build layout with
330 super_calls
= rta
.live_super_sends
332 super_calls
= all_super_calls
335 for mmethoddef
in super_calls
do
336 var mclass
= mmethoddef
.mclassdef
.mclass
337 mmethods
[mclass
].add
(mmethoddef
)
338 for descendant
in mclass
.in_hierarchy
(self.mainmodule
).smallers
do
339 mmethods
[descendant
].add
(mmethoddef
)
344 var meth_colorer
= new POSetBucketsColorer[MClass, PropertyLayoutElement](poset
, colorer
.conflicts
)
345 method_colors
= meth_colorer
.colorize
(mmethods
)
346 method_tables
= build_method_tables
(mclasses
, super_calls
)
347 compile_color_consts
(method_colors
)
349 # attribute null color to dead methods and supercalls
350 for mproperty
in dead_methods
do
351 compile_color_const
(new_visitor
, mproperty
, -1)
353 for mpropdef
in all_super_calls
do
354 if super_calls
.has
(mpropdef
) then continue
355 compile_color_const
(new_visitor
, mpropdef
, -1)
358 # attributes coloration
359 var attr_colorer
= new POSetBucketsColorer[MClass, MAttribute](poset
, colorer
.conflicts
)
360 attr_colors
= attr_colorer
.colorize
(mattributes
)
361 attr_tables
= build_attr_tables
(mclasses
)
362 compile_color_consts
(attr_colors
)
365 fun build_method_tables
(mclasses
: Set[MClass], super_calls
: Set[MMethodDef]): Map[MClass, Array[nullable MPropDef]] do
366 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
367 for mclass
in mclasses
do
368 var table
= new Array[nullable MPropDef]
369 tables
[mclass
] = table
371 var mproperties
= self.mainmodule
.properties
(mclass
)
372 var mtype
= mclass
.intro
.bound_mtype
374 for mproperty
in mproperties
do
375 if not mproperty
isa MMethod then continue
376 if not method_colors
.has_key
(mproperty
) then continue
377 var color
= method_colors
[mproperty
]
378 if table
.length
<= color
then
379 for i
in [table
.length
.. color
[ do
383 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
386 for supercall
in super_calls
do
387 if not mtype
.collect_mclassdefs
(mainmodule
).has
(supercall
.mclassdef
) then continue
389 var color
= method_colors
[supercall
]
390 if table
.length
<= color
then
391 for i
in [table
.length
.. color
[ do
395 var mmethoddef
= supercall
.lookup_next_definition
(mainmodule
, mtype
)
396 table
[color
] = mmethoddef
403 fun build_attr_tables
(mclasses
: Set[MClass]): Map[MClass, Array[nullable MPropDef]] do
404 var tables
= new HashMap[MClass, Array[nullable MPropDef]]
405 for mclass
in mclasses
do
406 var table
= new Array[nullable MPropDef]
407 tables
[mclass
] = table
409 var mproperties
= self.mainmodule
.properties
(mclass
)
410 var mtype
= mclass
.intro
.bound_mtype
412 for mproperty
in mproperties
do
413 if not mproperty
isa MAttribute then continue
414 if not attr_colors
.has_key
(mproperty
) then continue
415 var color
= attr_colors
[mproperty
]
416 if table
.length
<= color
then
417 for i
in [table
.length
.. color
[ do
421 table
[color
] = mproperty
.lookup_first_definition
(mainmodule
, mtype
)
427 # colorize live types of the program
428 private fun do_type_coloring
: POSet[MType] do
429 # Collect types to colorize
430 var live_types
= runtime_type_analysis
.live_types
431 var live_cast_types
= runtime_type_analysis
.live_cast_types
432 var mtypes
= new HashSet[MType]
433 mtypes
.add_all
(live_types
)
434 for c
in self.box_kinds
.keys
do
435 mtypes
.add
(c
.mclass_type
)
439 var poset
= poset_from_mtypes
(mtypes
, live_cast_types
)
440 var colorer
= new POSetColorer[MType]
441 colorer
.colorize
(poset
)
442 type_ids
= colorer
.ids
443 type_colors
= colorer
.colors
444 type_tables
= build_type_tables
(poset
)
446 # VT and FT are stored with other unresolved types in the big resolution_tables
447 self.compile_resolution_tables
(mtypes
)
452 private fun poset_from_mtypes
(mtypes
, cast_types
: Set[MType]): POSet[MType] do
453 var poset
= new POSet[MType]
456 for o
in cast_types
do
457 if e
== o
then continue
459 if e
.is_subtype
(mainmodule
, null, o
) then
468 fun build_type_tables
(mtypes
: POSet[MType]): Map[MType, Array[nullable MType]] do
469 var tables
= new HashMap[MType, Array[nullable MType]]
470 for mtype
in mtypes
do
471 var table
= new Array[nullable MType]
472 for sup
in mtypes
[mtype
].greaters
do
473 var color
= type_colors
[sup
]
474 if table
.length
<= color
then
475 for i
in [table
.length
.. color
[ do
481 tables
[mtype
] = table
486 protected fun compile_resolution_tables
(mtypes
: Set[MType]) do
487 # resolution_tables is used to perform a type resolution at runtime in O(1)
489 # During the visit of the body of classes, live_unresolved_types are collected
491 # Collect all live_unresolved_types (visited in the body of classes)
493 # Determinate fo each livetype what are its possible requested anchored types
494 var mtype2unresolved
= new HashMap[MClassType, Set[MType]]
495 for mtype
in self.runtime_type_analysis
.live_types
do
496 var set
= new HashSet[MType]
497 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
498 if self.live_unresolved_types
.has_key
(cd
) then
499 set
.add_all
(self.live_unresolved_types
[cd
])
502 mtype2unresolved
[mtype
] = set
505 # Compute the table layout with the prefered method
506 var colorer
= new BucketsColorer[MType, MType]
507 opentype_colors
= colorer
.colorize
(mtype2unresolved
)
508 resolution_tables
= self.build_resolution_tables
(mtype2unresolved
)
510 # Compile a C constant for each collected unresolved type.
511 # Either to a color, or to -1 if the unresolved type is dead (no live receiver can require it)
512 var all_unresolved
= new HashSet[MType]
513 for t
in self.live_unresolved_types
.values
do
514 all_unresolved
.add_all
(t
)
516 var all_unresolved_types_colors
= new HashMap[MType, Int]
517 for t
in all_unresolved
do
518 if opentype_colors
.has_key
(t
) then
519 all_unresolved_types_colors
[t
] = opentype_colors
[t
]
521 all_unresolved_types_colors
[t
] = -1
524 self.compile_color_consts
(all_unresolved_types_colors
)
527 #for k, v in unresolved_types_tables.as(not null) do
528 # print "{k}: {v.join(", ")}"
533 fun build_resolution_tables
(elements
: Map[MClassType, Set[MType]]): Map[MClassType, Array[nullable MType]] do
534 var tables
= new HashMap[MClassType, Array[nullable MType]]
535 for mclasstype
, mtypes
in elements
do
536 var table
= new Array[nullable MType]
537 for mtype
in mtypes
do
538 var color
= opentype_colors
[mtype
]
539 if table
.length
<= color
then
540 for i
in [table
.length
.. color
[ do
546 tables
[mclasstype
] = table
551 # Separately compile all the method definitions of the module
552 fun compile_module_to_c
(mmodule
: MModule)
554 var old_module
= self.mainmodule
555 self.mainmodule
= mmodule
556 for cd
in mmodule
.mclassdefs
do
557 for pd
in cd
.mpropdefs
do
558 if not pd
isa MMethodDef then continue
559 var rta
= runtime_type_analysis
560 if modelbuilder
.toolcontext
.opt_skip_dead_methods
.value
and rta
!= null and not rta
.live_methoddefs
.has
(pd
) then continue
561 #print "compile {pd} @ {cd} @ {mmodule}"
562 var r
= pd
.separate_runtime_function
564 var r2
= pd
.virtual_runtime_function
565 if r2
!= r
then r2
.compile_to_c
(self)
567 # Generate trampolines
568 if modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
569 r2
.compile_trampolines
(self)
573 self.mainmodule
= old_module
576 # Globaly compile the type structure of a live type
577 fun compile_type_to_c
(mtype
: MType)
579 assert not mtype
.need_anchor
580 var is_live
= mtype
isa MClassType and runtime_type_analysis
.live_types
.has
(mtype
)
581 var is_cast_live
= runtime_type_analysis
.live_cast_types
.has
(mtype
)
582 var c_name
= mtype
.c_name
583 var v
= new SeparateCompilerVisitor(self)
584 v
.add_decl
("/* runtime type {mtype} */")
586 # extern const struct type_X
587 self.provide_declaration
("type_{c_name}", "extern const struct type type_{c_name};")
589 # const struct type_X
590 v
.add_decl
("const struct type type_{c_name} = \{")
592 # type id (for cast target)
594 v
.add_decl
("{type_ids[mtype]},")
596 v
.add_decl
("-1, /*CAST DEAD*/")
600 v
.add_decl
("\"{mtype}\
", /* class_name_string */")
602 # type color (for cast target)
604 v
.add_decl
("{type_colors[mtype]},")
606 v
.add_decl
("-1, /*CAST DEAD*/")
610 if mtype
isa MNullableType then
616 # resolution table (for receiver)
618 var mclass_type
= mtype
.as_notnullable
619 assert mclass_type
isa MClassType
620 if resolution_tables
[mclass_type
].is_empty
then
621 v
.add_decl
("NULL, /*NO RESOLUTIONS*/")
623 compile_type_resolution_table
(mtype
)
624 v
.require_declaration
("resolution_table_{c_name}")
625 v
.add_decl
("&resolution_table_{c_name},")
628 v
.add_decl
("NULL, /*DEAD*/")
631 # cast table (for receiver)
633 v
.add_decl
("{self.type_tables[mtype].length},")
635 for stype
in self.type_tables
[mtype
] do
636 if stype
== null then
637 v
.add_decl
("-1, /* empty */")
639 v
.add_decl
("{type_ids[stype]}, /* {stype} */")
644 v
.add_decl
("0, \{\}, /*DEAD TYPE*/")
649 fun compile_type_resolution_table
(mtype
: MType) do
651 var mclass_type
= mtype
.as_notnullable
.as(MClassType)
653 # extern const struct resolution_table_X resolution_table_X
654 self.provide_declaration
("resolution_table_{mtype.c_name}", "extern const struct types resolution_table_{mtype.c_name};")
656 # const struct fts_table_X fts_table_X
658 v
.add_decl
("const struct types resolution_table_{mtype.c_name} = \{")
659 v
.add_decl
("0, /* dummy */")
661 for t
in self.resolution_tables
[mclass_type
] do
663 v
.add_decl
("NULL, /* empty */")
665 # The table stores the result of the type resolution
666 # Therefore, for a receiver `mclass_type`, and a unresolved type `t`
667 # the value stored is tv.
668 var tv
= t
.resolve_for
(mclass_type
, mclass_type
, self.mainmodule
, true)
669 # FIXME: What typeids means here? How can a tv not be live?
670 if type_ids
.has_key
(tv
) then
671 v
.require_declaration
("type_{tv.c_name}")
672 v
.add_decl
("&type_{tv.c_name}, /* {t}: {tv} */")
674 v
.add_decl
("NULL, /* empty ({t}: {tv} not a live type) */")
682 # Globally compile the table of the class mclass
683 # In a link-time optimisation compiler, tables are globally computed
684 # In a true separate compiler (a with dynamic loading) you cannot do this unfortnally
685 fun compile_class_to_c
(mclass
: MClass)
687 var mtype
= mclass
.intro
.bound_mtype
688 var c_name
= mclass
.c_name
690 var vft
= self.method_tables
[mclass
]
691 var attrs
= self.attr_tables
[mclass
]
694 var rta
= runtime_type_analysis
695 var is_dead
= rta
!= null and not rta
.live_classes
.has
(mclass
) and mtype
.ctype
== "val*" and mclass
.name
!= "NativeArray" and mclass
.name
!= "Pointer"
697 v
.add_decl
("/* runtime class {c_name} */")
701 self.provide_declaration
("class_{c_name}", "extern const struct class class_{c_name};")
702 v
.add_decl
("const struct class class_{c_name} = \{")
703 v
.add_decl
("{self.box_kind_of(mclass)}, /* box_kind */")
705 for i
in [0 .. vft
.length
[ do
706 var mpropdef
= vft
[i
]
707 if mpropdef
== null then
708 v
.add_decl
("NULL, /* empty */")
710 assert mpropdef
isa MMethodDef
711 if rta
!= null and not rta
.live_methoddefs
.has
(mpropdef
) then
712 v
.add_decl
("NULL, /* DEAD {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
715 var rf
= mpropdef
.virtual_runtime_function
716 v
.require_declaration
(rf
.c_name
)
717 v
.add_decl
("(nitmethod_t){rf.c_name}, /* pointer to {mclass.intro_mmodule}:{mclass}:{mpropdef} */")
724 if mtype
.ctype
!= "val*" or mtype
.mclass
.name
== "Pointer" then
725 # Is a primitive type or the Pointer class, not any other extern class
727 #Build instance struct
728 self.header
.add_decl
("struct instance_{c_name} \{")
729 self.header
.add_decl
("const struct type *type;")
730 self.header
.add_decl
("const struct class *class;")
731 self.header
.add_decl
("{mtype.ctype_extern} value;")
732 self.header
.add_decl
("\};")
734 if not rta
.live_types
.has
(mtype
) and mtype
.mclass
.name
!= "Pointer" then return
737 self.provide_declaration
("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
738 v
.add_decl
("/* allocate {mtype} */")
739 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype_extern} value) \{")
740 v
.add
("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")
741 v
.compiler
.undead_types
.add
(mtype
)
742 v
.require_declaration
("type_{c_name}")
743 v
.add
("res->type = &type_{c_name};")
744 v
.require_declaration
("class_{c_name}")
745 v
.add
("res->class = &class_{c_name};")
746 v
.add
("res->value = value;")
747 v
.add
("return (val*)res;")
750 if mtype
.mclass
.name
!= "Pointer" then return
753 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
754 v
.add_decl
("/* allocate {mtype} */")
755 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
757 v
.add_abort
("{mclass} is DEAD")
759 var res
= v
.new_named_var
(mtype
, "self")
761 v
.add
("{res} = nit_alloc(sizeof(struct instance_{mtype.c_name}));")
762 v
.add
("{res}->type = type;")
763 hardening_live_type
(v
, "type")
764 v
.require_declaration
("class_{c_name}")
765 v
.add
("{res}->class = &class_{c_name};")
766 v
.add
("((struct instance_{mtype.c_name}*){res})->value = NULL;")
767 v
.add
("return {res};")
771 else if mclass
.name
== "NativeArray" then
772 #Build instance struct
773 self.header
.add_decl
("struct instance_{c_name} \{")
774 self.header
.add_decl
("const struct type *type;")
775 self.header
.add_decl
("const struct class *class;")
776 # NativeArrays are just a instance header followed by a length and an array of values
777 self.header
.add_decl
("int length;")
778 self.header
.add_decl
("val* values[0];")
779 self.header
.add_decl
("\};")
782 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(int length, const struct type* type);")
783 v
.add_decl
("/* allocate {mtype} */")
784 v
.add_decl
("{mtype.ctype} NEW_{c_name}(int length, const struct type* type) \{")
785 var res
= v
.get_name
("self")
786 v
.add_decl
("struct instance_{c_name} *{res};")
787 var mtype_elt
= mtype
.arguments
.first
788 v
.add
("{res} = nit_alloc(sizeof(struct instance_{c_name}) + length*sizeof({mtype_elt.ctype}));")
789 v
.add
("{res}->type = type;")
790 hardening_live_type
(v
, "type")
791 v
.require_declaration
("class_{c_name}")
792 v
.add
("{res}->class = &class_{c_name};")
793 v
.add
("{res}->length = length;")
794 v
.add
("return (val*){res};")
797 else if mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
798 # Is an extern class (other than Pointer and NativeString)
799 # Pointer is caught in a previous `if`, and NativeString is internal
801 var pointer_type
= mainmodule
.pointer_type
803 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
804 v
.add_decl
("/* allocate {mtype} */")
805 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
807 v
.add_abort
("{mclass} is DEAD")
809 var res
= v
.new_named_var
(mtype
, "self")
811 v
.add
("{res} = nit_alloc(sizeof(struct instance_{pointer_type.c_name}));")
812 v
.add
("{res}->type = type;")
813 hardening_live_type
(v
, "type")
814 v
.require_declaration
("class_{c_name}")
815 v
.add
("{res}->class = &class_{c_name};")
816 v
.add
("((struct instance_{pointer_type.c_name}*){res})->value = NULL;")
817 v
.add
("return {res};")
824 self.provide_declaration
("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(const struct type* type);")
825 v
.add_decl
("/* allocate {mtype} */")
826 v
.add_decl
("{mtype.ctype} NEW_{c_name}(const struct type* type) \{")
828 v
.add_abort
("{mclass} is DEAD")
830 var res
= v
.new_named_var
(mtype
, "self")
832 v
.add
("{res} = nit_alloc(sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t));")
833 v
.add
("{res}->type = type;")
834 hardening_live_type
(v
, "type")
835 v
.require_declaration
("class_{c_name}")
836 v
.add
("{res}->class = &class_{c_name};")
837 self.generate_init_attr
(v
, res
, mtype
)
839 v
.add
("return {res};")
844 # Add a dynamic test to ensure that the type referenced by `t` is a live type
845 fun hardening_live_type
(v
: VISITOR, t
: String)
847 if not v
.compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
848 v
.add
("if({t} == NULL) \{")
849 v
.add_abort
("type null")
851 v
.add
("if({t}->table_size == 0) \{")
852 v
.add
("PRINT_ERROR(\"Insantiation of a dead
type: %s\\n\
", {t}->name);")
853 v
.add_abort
("type dead")
857 redef fun new_visitor
do return new SeparateCompilerVisitor(self)
861 private var type_tables
: Map[MType, Array[nullable MType]] = new HashMap[MType, Array[nullable MType]]
862 private var resolution_tables
: Map[MClassType, Array[nullable MType]] = new HashMap[MClassType, Array[nullable MType]]
863 protected var method_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
864 protected var attr_tables
: Map[MClass, Array[nullable MPropDef]] = new HashMap[MClass, Array[nullable MPropDef]]
866 redef fun display_stats
869 if self.modelbuilder
.toolcontext
.opt_tables_metrics
.value
then
872 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
875 var tc
= self.modelbuilder
.toolcontext
876 tc
.info
("# implementation of method invocation",2)
877 var nb_invok_total
= modelbuilder
.nb_invok_by_tables
+ modelbuilder
.nb_invok_by_direct
+ modelbuilder
.nb_invok_by_inline
878 tc
.info
("total number of invocations: {nb_invok_total}",2)
879 tc
.info
("invocations by VFT send: {modelbuilder.nb_invok_by_tables} ({div(modelbuilder.nb_invok_by_tables,nb_invok_total)}%)",2)
880 tc
.info
("invocations by direct call: {modelbuilder.nb_invok_by_direct} ({div(modelbuilder.nb_invok_by_direct,nb_invok_total)}%)",2)
881 tc
.info
("invocations by inlining: {modelbuilder.nb_invok_by_inline} ({div(modelbuilder.nb_invok_by_inline,nb_invok_total)}%)",2)
886 print
"# size of subtyping tables"
887 print
"\ttotal \tholes"
890 for t
, table
in type_tables
do
891 total
+= table
.length
892 for e
in table
do if e
== null then holes
+= 1
894 print
"\t{total}\t{holes}"
896 print
"# size of resolution tables"
897 print
"\ttotal \tholes"
900 for t
, table
in resolution_tables
do
901 total
+= table
.length
902 for e
in table
do if e
== null then holes
+= 1
904 print
"\t{total}\t{holes}"
906 print
"# size of methods tables"
907 print
"\ttotal \tholes"
910 for t
, table
in method_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 attributes tables"
917 print
"\ttotal \tholes"
920 for t
, table
in attr_tables
do
921 total
+= table
.length
922 for e
in table
do if e
== null then holes
+= 1
924 print
"\t{total}\t{holes}"
927 protected var isset_checks_count
= 0
928 protected var attr_read_count
= 0
930 fun display_isset_checks
do
931 print
"# total number of compiled attribute reads"
932 print
"\t{attr_read_count}"
933 print
"# total number of compiled isset-checks"
934 print
"\t{isset_checks_count}"
937 redef fun compile_nitni_structs
939 self.header
.add_decl
"""
940 struct nitni_instance \{
941 struct nitni_instance *next,
942 *prev; /* adjacent global references in global list */
943 int count; /* number of time this global reference has been marked */
944 struct instance *value;
950 redef fun finalize_ffi_for_module
(mmodule
)
952 var old_module
= self.mainmodule
953 self.mainmodule
= mmodule
955 self.mainmodule
= old_module
959 # A visitor on the AST of property definition that generate the C code of a separate compilation process.
960 class SeparateCompilerVisitor
961 super AbstractCompilerVisitor
963 redef type COMPILER: SeparateCompiler
965 redef fun adapt_signature
(m
, args
)
967 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
968 var recv
= args
.first
969 if recv
.mtype
.ctype
!= m
.mclassdef
.mclass
.mclass_type
.ctype
then
970 args
.first
= self.autobox
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
972 for i
in [0..msignature
.arity
[ do
973 var t
= msignature
.mparameters
[i
].mtype
974 if i
== msignature
.vararg_rank
then
977 args
[i
+1] = self.autobox
(args
[i
+1], t
)
981 redef fun unbox_signature_extern
(m
, args
)
983 var msignature
= m
.msignature
.resolve_for
(m
.mclassdef
.bound_mtype
, m
.mclassdef
.bound_mtype
, m
.mclassdef
.mmodule
, true)
984 if not m
.mproperty
.is_init
and m
.is_extern
then
985 args
.first
= self.unbox_extern
(args
.first
, m
.mclassdef
.mclass
.mclass_type
)
987 for i
in [0..msignature
.arity
[ do
988 var t
= msignature
.mparameters
[i
].mtype
989 if i
== msignature
.vararg_rank
then
992 if m
.is_extern
then args
[i
+1] = self.unbox_extern
(args
[i
+1], t
)
996 redef fun autobox
(value
, mtype
)
998 if value
.mtype
== mtype
then
1000 else if value
.mtype
.ctype
== "val*" and mtype
.ctype
== "val*" then
1002 else if value
.mtype
.ctype
== "val*" then
1003 return self.new_expr
("((struct instance_{mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
1004 else if mtype
.ctype
== "val*" then
1005 var valtype
= value
.mtype
.as(MClassType)
1006 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and mtype
.mclass
.name
!= "NativeString" then
1007 valtype
= compiler
.mainmodule
.pointer_type
1009 var res
= self.new_var
(mtype
)
1010 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
1011 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
1012 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1015 self.require_declaration
("BOX_{valtype.c_name}")
1016 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
1018 else if (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "void*") or
1019 (value
.mtype
.ctype
== "char*" and mtype
.ctype
== "void*") or
1020 (value
.mtype
.ctype
== "void*" and mtype
.ctype
== "char*") then
1023 # Bad things will appen!
1024 var res
= self.new_var
(mtype
)
1025 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
1026 self.add
("PRINT_ERROR(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); show_backtrace(1);")
1031 redef fun unbox_extern
(value
, mtype
)
1033 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1034 mtype
.mclass
.name
!= "NativeString" then
1035 var pointer_type
= compiler
.mainmodule
.pointer_type
1036 var res
= self.new_var_extern
(mtype
)
1037 self.add
"{res} = ((struct instance_{pointer_type.c_name}*){value})->value; /* unboxing {value.mtype} */"
1044 redef fun box_extern
(value
, mtype
)
1046 if mtype
isa MClassType and mtype
.mclass
.kind
== extern_kind
and
1047 mtype
.mclass
.name
!= "NativeString" then
1048 var valtype
= compiler
.mainmodule
.pointer_type
1049 var res
= self.new_var
(mtype
)
1050 if compiler
.runtime_type_analysis
!= null and not compiler
.runtime_type_analysis
.live_types
.has
(value
.mtype
.as(MClassType)) then
1051 self.add
("/*no boxing of {value.mtype}: {value.mtype} is not live! */")
1052 self.add
("PRINT_ERROR(\"Dead code executed
!\\n\
"); show_backtrace(1);")
1055 self.require_declaration
("BOX_{valtype.c_name}")
1056 self.add
("{res} = BOX_{valtype.c_name}({value}); /* boxing {value.mtype} */")
1057 self.require_declaration
("type_{mtype.c_name}")
1058 self.add
("{res}->type = &type_{mtype.c_name};")
1059 self.require_declaration
("class_{mtype.c_name}")
1060 self.add
("{res}->class = &class_{mtype.c_name};")
1067 # Return a C expression returning the runtime type structure of the value
1068 # The point of the method is to works also with primitives types.
1069 fun type_info
(value
: RuntimeVariable): String
1071 if value
.mtype
.ctype
== "val*" then
1072 return "{value}->type"
1074 compiler
.undead_types
.add
(value
.mtype
)
1075 self.require_declaration
("type_{value.mtype.c_name}")
1076 return "(&type_{value.mtype.c_name})"
1080 redef fun compile_callsite
(callsite
, args
)
1082 var rta
= compiler
.runtime_type_analysis
1083 var mmethod
= callsite
.mproperty
1084 # TODO: Inlining of new-style constructors with initializers
1085 if compiler
.modelbuilder
.toolcontext
.opt_direct_call_monomorph
.value
and rta
!= null and callsite
.mpropdef
.initializers
.is_empty
then
1086 var tgs
= rta
.live_targets
(callsite
)
1087 if tgs
.length
== 1 then
1089 var res0
= before_send
(mmethod
, args
)
1090 var res
= call
(tgs
.first
, tgs
.first
.mclassdef
.bound_mtype
, args
)
1091 if res0
!= null then
1093 self.assign
(res0
, res
)
1096 add
("\}") # close the before_send
1102 redef fun send
(mmethod
, arguments
)
1104 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1105 # In order to shortcut the primitive, we need to find the most specific method
1106 # Howverr, because of performance (no flattening), we always work on the realmainmodule
1107 var m
= self.compiler
.mainmodule
1108 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1109 var res
= self.monomorphic_send
(mmethod
, arguments
.first
.mcasttype
, arguments
)
1110 self.compiler
.mainmodule
= m
1114 return table_send
(mmethod
, arguments
, mmethod
.const_color
)
1117 # Handle common special cases before doing the effective method invocation
1118 # This methods handle the `==` and `!=` methods and the case of the null receiver.
1119 # Note: a { is open in the generated C, that enclose and protect the effective method invocation.
1120 # Client must not forget to close the } after them.
1122 # The value returned is the result of the common special cases.
1123 # If not null, client must compile it with the result of their own effective method invocation.
1125 # If `before_send` can shortcut the whole message sending, a dummy `if(0){`
1126 # is generated to cancel the effective method invocation that will follow
1127 # TODO: find a better approach
1128 private fun before_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1130 var res
: nullable RuntimeVariable = null
1131 var recv
= arguments
.first
1132 var consider_null
= not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_null
.value
or mmethod
.name
== "==" or mmethod
.name
== "!="
1133 var maybenull
= (recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType) and consider_null
1135 self.add
("if ({recv} == NULL) \{")
1136 if mmethod
.name
== "==" or mmethod
.name
== "is_same_instance" then
1137 res
= self.new_var
(bool_type
)
1138 var arg
= arguments
[1]
1139 if arg
.mcasttype
isa MNullableType then
1140 self.add
("{res} = ({arg} == NULL);")
1141 else if arg
.mcasttype
isa MNullType then
1142 self.add
("{res} = 1; /* is null */")
1144 self.add
("{res} = 0; /* {arg.inspect} cannot be null */")
1146 else if mmethod
.name
== "!=" then
1147 res
= self.new_var
(bool_type
)
1148 var arg
= arguments
[1]
1149 if arg
.mcasttype
isa MNullableType then
1150 self.add
("{res} = ({arg} != NULL);")
1151 else if arg
.mcasttype
isa MNullType then
1152 self.add
("{res} = 0; /* is null */")
1154 self.add
("{res} = 1; /* {arg.inspect} cannot be null */")
1157 self.add_abort
("Receiver is null")
1159 self.add
("\} else \{")
1163 if not self.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_equate
.value
and (mmethod
.name
== "==" or mmethod
.name
== "!=" or mmethod
.name
== "is_same_instance") then
1164 # Recv is not null, thus if arg is, it is easy to conclude (and respect the invariants)
1165 var arg
= arguments
[1]
1166 if arg
.mcasttype
isa MNullType then
1167 if res
== null then res
= self.new_var
(bool_type
)
1168 if mmethod
.name
== "!=" then
1169 self.add
("{res} = 1; /* arg is null and recv is not */")
1170 else # `==` and `is_same_instance`
1171 self.add
("{res} = 0; /* arg is null but recv is not */")
1173 self.add
("\}") # closes the null case
1174 self.add
("if (0) \{") # what follow is useless, CC will drop it
1180 private fun table_send
(mmethod
: MMethod, arguments
: Array[RuntimeVariable], const_color
: String): nullable RuntimeVariable
1182 compiler
.modelbuilder
.nb_invok_by_tables
+= 1
1183 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_tables++;")
1185 assert arguments
.length
== mmethod
.intro
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethod}. {arguments.length} arguments given.")
1186 var recv
= arguments
.first
1188 var res0
= before_send
(mmethod
, arguments
)
1190 var runtime_function
= mmethod
.intro
.virtual_runtime_function
1191 var msignature
= runtime_function
.called_signature
1193 var res
: nullable RuntimeVariable
1194 var ret
= msignature
.return_mtype
1198 res
= self.new_var
(ret
)
1201 var ss
= new FlatBuffer
1204 for i
in [0..msignature
.arity
[ do
1205 var a
= arguments
[i
+1]
1206 var t
= msignature
.mparameters
[i
].mtype
1207 if i
== msignature
.vararg_rank
then
1208 t
= arguments
[i
+1].mcasttype
1210 a
= self.autobox
(a
, t
)
1215 if not compiler
.modelbuilder
.toolcontext
.opt_trampoline_call
.value
then
1216 self.require_declaration
(const_color
)
1217 call
= "(({runtime_function.c_funptrtype})({arguments.first}->class->vft[{const_color}]))({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1219 var callsym
= "CALL_" + const_color
1220 self.require_declaration
(callsym
)
1221 call
= "{callsym}({ss}) /* {mmethod} on {arguments.first.inspect}*/"
1225 self.add
("{res} = {call};")
1230 if res0
!= null then
1236 self.add
("\}") # closes the null case
1241 redef fun call
(mmethoddef
, recvtype
, arguments
)
1243 assert arguments
.length
== mmethoddef
.msignature
.arity
+ 1 else debug
("Invalid arity for {mmethoddef}. {arguments.length} arguments given.")
1245 var res
: nullable RuntimeVariable
1246 var ret
= mmethoddef
.msignature
.return_mtype
1250 ret
= ret
.resolve_for
(mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.bound_mtype
, mmethoddef
.mclassdef
.mmodule
, true)
1251 res
= self.new_var
(ret
)
1254 if (mmethoddef
.is_intern
and not compiler
.modelbuilder
.toolcontext
.opt_no_inline_intern
.value
) or
1255 (compiler
.modelbuilder
.toolcontext
.opt_inline_some_methods
.value
and mmethoddef
.can_inline
(self)) then
1256 compiler
.modelbuilder
.nb_invok_by_inline
+= 1
1257 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_inline++;")
1258 var frame
= new StaticFrame(self, mmethoddef
, recvtype
, arguments
)
1259 frame
.returnlabel
= self.get_name
("RET_LABEL")
1260 frame
.returnvar
= res
1261 var old_frame
= self.frame
1263 self.add
("\{ /* Inline {mmethoddef} ({arguments.join(",")}) on {arguments.first.inspect} */")
1264 mmethoddef
.compile_inside_to_c
(self, arguments
)
1265 self.add
("{frame.returnlabel.as(not null)}:(void)0;")
1267 self.frame
= old_frame
1270 compiler
.modelbuilder
.nb_invok_by_direct
+= 1
1271 if compiler
.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then add
("count_invoke_by_direct++;")
1274 self.adapt_signature
(mmethoddef
, arguments
)
1276 self.require_declaration
(mmethoddef
.c_name
)
1278 self.add
("{mmethoddef.c_name}({arguments.join(", ")}); /* Direct call {mmethoddef} on {arguments.first.inspect}*/")
1281 self.add
("{res} = {mmethoddef.c_name}({arguments.join(", ")});")
1287 redef fun supercall
(m
: MMethodDef, recvtype
: MClassType, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1289 if arguments
.first
.mcasttype
.ctype
!= "val*" then
1290 # In order to shortcut the primitive, we need to find the most specific method
1291 # However, because of performance (no flattening), we always work on the realmainmodule
1292 var main
= self.compiler
.mainmodule
1293 self.compiler
.mainmodule
= self.compiler
.realmainmodule
1294 var res
= self.monomorphic_super_send
(m
, recvtype
, arguments
)
1295 self.compiler
.mainmodule
= main
1298 return table_send
(m
.mproperty
, arguments
, m
.const_color
)
1301 redef fun vararg_instance
(mpropdef
, recv
, varargs
, elttype
)
1303 # A vararg must be stored into an new array
1304 # The trick is that the dymaic type of the array may depends on the receiver
1305 # of the method (ie recv) if the static type is unresolved
1306 # This is more complex than usual because the unresolved type must not be resolved
1307 # with the current receiver (ie self).
1308 # Therefore to isolate the resolution from self, a local StaticFrame is created.
1309 # One can see this implementation as an inlined method of the receiver whose only
1310 # job is to allocate the array
1311 var old_frame
= self.frame
1312 var frame
= new StaticFrame(self, mpropdef
, mpropdef
.mclassdef
.bound_mtype
, [recv
])
1314 #print "required Array[{elttype}] for recv {recv.inspect}. bound=Array[{self.resolve_for(elttype, recv)}]. selfvar={frame.arguments.first.inspect}"
1315 var res
= self.array_instance
(varargs
, elttype
)
1316 self.frame
= old_frame
1320 redef fun isset_attribute
(a
, recv
)
1322 self.check_recv_notnull
(recv
)
1323 var res
= self.new_var
(bool_type
)
1325 # What is the declared type of the attribute?
1326 var mtype
= a
.intro
.static_mtype
.as(not null)
1327 var intromclassdef
= a
.intro
.mclassdef
1328 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1330 if mtype
isa MNullableType then
1331 self.add
("{res} = 1; /* easy isset: {a} on {recv.inspect} */")
1335 self.require_declaration
(a
.const_color
)
1336 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1337 self.add
("{res} = {recv}->attrs[{a.const_color}] != NULL; /* {a} on {recv.inspect}*/")
1340 if mtype
.ctype
== "val*" then
1341 self.add
("{res} = {recv}->attrs[{a.const_color}].val != NULL; /* {a} on {recv.inspect} */")
1343 self.add
("{res} = 1; /* NOT YET IMPLEMENTED: isset of primitives: {a} on {recv.inspect} */")
1349 redef fun read_attribute
(a
, recv
)
1351 self.check_recv_notnull
(recv
)
1353 # What is the declared type of the attribute?
1354 var ret
= a
.intro
.static_mtype
.as(not null)
1355 var intromclassdef
= a
.intro
.mclassdef
1356 ret
= ret
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1358 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1359 self.compiler
.attr_read_count
+= 1
1360 self.add
("count_attr_reads++;")
1363 self.require_declaration
(a
.const_color
)
1364 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1365 # Get the attribute or a box (ie. always a val*)
1366 var cret
= self.object_type
.as_nullable
1367 var res
= self.new_var
(cret
)
1370 self.add
("{res} = {recv}->attrs[{a.const_color}]; /* {a} on {recv.inspect} */")
1372 # Check for Uninitialized attribute
1373 if not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1374 self.add
("if (unlikely({res} == NULL)) \{")
1375 self.add_abort
("Uninitialized attribute {a.name}")
1378 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1379 self.compiler
.isset_checks_count
+= 1
1380 self.add
("count_isset_checks++;")
1384 # Return the attribute or its unboxed version
1385 # Note: it is mandatory since we reuse the box on write, we do not whant that the box escapes
1386 return self.autobox
(res
, ret
)
1388 var res
= self.new_var
(ret
)
1389 self.add
("{res} = {recv}->attrs[{a.const_color}].{ret.ctypename}; /* {a} on {recv.inspect} */")
1391 # Check for Uninitialized attribute
1392 if ret
.ctype
== "val*" and not ret
isa MNullableType and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_attr_isset
.value
then
1393 self.add
("if (unlikely({res} == NULL)) \{")
1394 self.add_abort
("Uninitialized attribute {a.name}")
1396 if self.compiler
.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
1397 self.compiler
.isset_checks_count
+= 1
1398 self.add
("count_isset_checks++;")
1406 redef fun write_attribute
(a
, recv
, value
)
1408 self.check_recv_notnull
(recv
)
1410 # What is the declared type of the attribute?
1411 var mtype
= a
.intro
.static_mtype
.as(not null)
1412 var intromclassdef
= a
.intro
.mclassdef
1413 mtype
= mtype
.resolve_for
(intromclassdef
.bound_mtype
, intromclassdef
.bound_mtype
, intromclassdef
.mmodule
, true)
1415 # Adapt the value to the declared type
1416 value
= self.autobox
(value
, mtype
)
1418 self.require_declaration
(a
.const_color
)
1419 if self.compiler
.modelbuilder
.toolcontext
.opt_no_union_attribute
.value
then
1420 var attr
= "{recv}->attrs[{a.const_color}]"
1421 if mtype
.ctype
!= "val*" then
1422 assert mtype
isa MClassType
1423 # The attribute is primitive, thus we store it in a box
1424 # The trick is to create the box the first time then resuse the box
1425 self.add
("if ({attr} != NULL) \{")
1426 self.add
("((struct instance_{mtype.c_name}*){attr})->value = {value}; /* {a} on {recv.inspect} */")
1427 self.add
("\} else \{")
1428 value
= self.autobox
(value
, self.object_type
.as_nullable
)
1429 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1432 # The attribute is not primitive, thus store it direclty
1433 self.add
("{attr} = {value}; /* {a} on {recv.inspect} */")
1436 self.add
("{recv}->attrs[{a.const_color}].{mtype.ctypename} = {value}; /* {a} on {recv.inspect} */")
1440 # Check that mtype is a live open type
1441 fun hardening_live_open_type
(mtype
: MType)
1443 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1444 self.require_declaration
(mtype
.const_color
)
1445 var col
= mtype
.const_color
1446 self.add
("if({col} == -1) \{")
1447 self.add
("PRINT_ERROR(\"Resolution of a dead open
type: %s\\n\
", \"{mtype.to_s.escape_to_c}\
");")
1448 self.add_abort
("open type dead")
1452 # Check that mtype it a pointer to a live cast type
1453 fun hardening_cast_type
(t
: String)
1455 if not compiler
.modelbuilder
.toolcontext
.opt_hardening
.value
then return
1456 add
("if({t} == NULL) \{")
1457 add_abort
("cast type null")
1459 add
("if({t}->id == -1 || {t}->color == -1) \{")
1460 add
("PRINT_ERROR(\"Try to cast on a dead cast
type: %s\\n\
", {t}->name);")
1461 add_abort
("cast type dead")
1465 redef fun init_instance
(mtype
)
1467 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1468 var compiler
= self.compiler
1469 if mtype
isa MGenericType and mtype
.need_anchor
then
1470 hardening_live_open_type
(mtype
)
1471 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1472 var recv
= self.frame
.arguments
.first
1473 var recv_type_info
= self.type_info
(recv
)
1474 self.require_declaration
(mtype
.const_color
)
1475 return self.new_expr
("NEW_{mtype.mclass.c_name}({recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1477 compiler
.undead_types
.add
(mtype
)
1478 self.require_declaration
("type_{mtype.c_name}")
1479 return self.new_expr
("NEW_{mtype.mclass.c_name}(&type_{mtype.c_name})", mtype
)
1482 redef fun type_test
(value
, mtype
, tag
)
1484 self.add
("/* {value.inspect} isa {mtype} */")
1485 var compiler
= self.compiler
1487 var recv
= self.frame
.arguments
.first
1488 var recv_type_info
= self.type_info
(recv
)
1490 var res
= self.new_var
(bool_type
)
1492 var cltype
= self.get_name
("cltype")
1493 self.add_decl
("int {cltype};")
1494 var idtype
= self.get_name
("idtype")
1495 self.add_decl
("int {idtype};")
1497 var maybe_null
= self.maybe_null
(value
)
1498 var accept_null
= "0"
1500 if ntype
isa MNullableType then
1505 if value
.mcasttype
.is_subtype
(self.frame
.mpropdef
.mclassdef
.mmodule
, self.frame
.mpropdef
.mclassdef
.bound_mtype
, mtype
) then
1506 self.add
("{res} = 1; /* easy {value.inspect} isa {mtype}*/")
1507 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1508 self.compiler
.count_type_test_skipped
[tag
] += 1
1509 self.add
("count_type_test_skipped_{tag}++;")
1514 if ntype
.need_anchor
then
1515 var type_struct
= self.get_name
("type_struct")
1516 self.add_decl
("const struct type* {type_struct};")
1518 # Either with resolution_table with a direct resolution
1519 hardening_live_open_type
(mtype
)
1520 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1521 self.require_declaration
(mtype
.const_color
)
1522 self.add
("{type_struct} = {recv_type_info}->resolution_table->types[{mtype.const_color}];")
1523 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1524 self.compiler
.count_type_test_unresolved
[tag
] += 1
1525 self.add
("count_type_test_unresolved_{tag}++;")
1527 hardening_cast_type
(type_struct
)
1528 self.add
("{cltype} = {type_struct}->color;")
1529 self.add
("{idtype} = {type_struct}->id;")
1530 if maybe_null
and accept_null
== "0" then
1531 var is_nullable
= self.get_name
("is_nullable")
1532 self.add_decl
("short int {is_nullable};")
1533 self.add
("{is_nullable} = {type_struct}->is_nullable;")
1534 accept_null
= is_nullable
.to_s
1536 else if ntype
isa MClassType then
1537 compiler
.undead_types
.add
(mtype
)
1538 self.require_declaration
("type_{mtype.c_name}")
1539 hardening_cast_type
("(&type_{mtype.c_name})")
1540 self.add
("{cltype} = type_{mtype.c_name}.color;")
1541 self.add
("{idtype} = type_{mtype.c_name}.id;")
1542 if compiler
.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
1543 self.compiler
.count_type_test_resolved
[tag
] += 1
1544 self.add
("count_type_test_resolved_{tag}++;")
1547 self.add
("PRINT_ERROR(\"NOT YET IMPLEMENTED: type_test
(%s
, {mtype}).\\n\
", \"{value.inspect}\
"); show_backtrace(1);")
1550 # check color is in table
1552 self.add
("if({value} == NULL) \{")
1553 self.add
("{res} = {accept_null};")
1554 self.add
("\} else \{")
1556 var value_type_info
= self.type_info
(value
)
1557 self.add
("if({cltype} >= {value_type_info}->table_size) \{")
1558 self.add
("{res} = 0;")
1559 self.add
("\} else \{")
1560 self.add
("{res} = {value_type_info}->type_table[{cltype}] == {idtype};")
1569 redef fun is_same_type_test
(value1
, value2
)
1571 var res
= self.new_var
(bool_type
)
1572 # Swap values to be symetric
1573 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1578 if value1
.mtype
.ctype
!= "val*" then
1579 if value2
.mtype
== value1
.mtype
then
1580 self.add
("{res} = 1; /* is_same_type_test: compatible types {value1.mtype} vs. {value2.mtype} */")
1581 else if value2
.mtype
.ctype
!= "val*" then
1582 self.add
("{res} = 0; /* is_same_type_test: incompatible types {value1.mtype} vs. {value2.mtype}*/")
1584 var mtype1
= value1
.mtype
.as(MClassType)
1585 self.require_declaration
("class_{mtype1.c_name}")
1586 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name}); /* is_same_type_test */")
1589 self.add
("{res} = ({value1} == {value2}) || ({value1} != NULL && {value2} != NULL && {value1}->class == {value2}->class); /* is_same_type_test */")
1594 redef fun class_name_string
(value
)
1596 var res
= self.get_name
("var_class_name")
1597 self.add_decl
("const char* {res};")
1598 if value
.mtype
.ctype
== "val*" then
1599 self.add
"{res} = {value} == NULL ? \"null\
" : {value}->type->name;"
1600 else if value
.mtype
isa MClassType and value
.mtype
.as(MClassType).mclass
.kind
== extern_kind
and
1601 value
.mtype
.as(MClassType).name
!= "NativeString" then
1602 self.add
"{res} = \"{value.mtype.as(MClassType).mclass}\
";"
1604 self.require_declaration
("type_{value.mtype.c_name}")
1605 self.add
"{res} = type_{value.mtype.c_name}.name;"
1610 redef fun equal_test
(value1
, value2
)
1612 var res
= self.new_var
(bool_type
)
1613 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1618 if value1
.mtype
.ctype
!= "val*" then
1619 if value2
.mtype
== value1
.mtype
then
1620 self.add
("{res} = {value1} == {value2};")
1621 else if value2
.mtype
.ctype
!= "val*" then
1622 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1624 var mtype1
= value1
.mtype
.as(MClassType)
1625 self.require_declaration
("class_{mtype1.c_name}")
1626 self.add
("{res} = ({value2} != NULL) && ({value2}->class == &class_{mtype1.c_name});")
1627 self.add
("if ({res}) \{")
1628 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1633 var maybe_null
= true
1634 var test
= new Array[String]
1635 var t1
= value1
.mcasttype
1636 if t1
isa MNullableType then
1637 test
.add
("{value1} != NULL")
1642 var t2
= value2
.mcasttype
1643 if t2
isa MNullableType then
1644 test
.add
("{value2} != NULL")
1650 var incompatible
= false
1652 if t1
.ctype
!= "val*" then
1655 # No need to compare class
1656 else if t2
.ctype
!= "val*" then
1658 else if can_be_primitive
(value2
) then
1659 test
.add
("{value1}->class == {value2}->class")
1663 else if t2
.ctype
!= "val*" then
1665 if can_be_primitive
(value1
) then
1666 test
.add
("{value1}->class == {value2}->class")
1674 if incompatible
then
1676 self.add
("{res} = {value1} == {value2}; /* incompatible types {t1} vs. {t2}; but may be NULL*/")
1679 self.add
("{res} = 0; /* incompatible types {t1} vs. {t2}; cannot be NULL */")
1683 if primitive
!= null then
1684 test
.add
("((struct instance_{primitive.c_name}*){value1})->value == ((struct instance_{primitive.c_name}*){value2})->value")
1685 else if can_be_primitive
(value1
) and can_be_primitive
(value2
) then
1686 test
.add
("{value1}->class == {value2}->class")
1687 var s
= new Array[String]
1688 for t
, v
in self.compiler
.box_kinds
do
1689 s
.add
"({value1}->class->box_kind == {v} && ((struct instance_{t.c_name}*){value1})->value == ((struct instance_{t.c_name}*){value2})->value)"
1691 test
.add
("({s.join(" || ")})")
1693 self.add
("{res} = {value1} == {value2};")
1696 self.add
("{res} = {value1} == {value2} || ({test.join(" && ")});")
1700 fun can_be_primitive
(value
: RuntimeVariable): Bool
1702 var t
= value
.mcasttype
.as_notnullable
1703 if not t
isa MClassType then return false
1704 var k
= t
.mclass
.kind
1705 return k
== interface_kind
or t
.ctype
!= "val*"
1708 fun maybe_null
(value
: RuntimeVariable): Bool
1710 var t
= value
.mcasttype
1711 return t
isa MNullableType or t
isa MNullType
1714 redef fun array_instance
(array
, elttype
)
1716 var nclass
= self.get_class
("NativeArray")
1717 var arrayclass
= self.get_class
("Array")
1718 var arraytype
= arrayclass
.get_mtype
([elttype
])
1719 var res
= self.init_instance
(arraytype
)
1720 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1721 var length
= self.int_instance
(array
.length
)
1722 var nat
= native_array_instance
(elttype
, length
)
1723 for i
in [0..array
.length
[ do
1724 var r
= self.autobox
(array
[i
], self.object_type
)
1725 self.add
("((struct instance_{nclass.c_name}*){nat})->values[{i}] = (val*) {r};")
1727 self.send
(self.get_property
("with_native", arrayclass
.intro
.bound_mtype
), [res
, nat
, length
])
1732 redef fun native_array_instance
(elttype
: MType, length
: RuntimeVariable): RuntimeVariable
1734 var mtype
= self.get_class
("NativeArray").get_mtype
([elttype
])
1735 self.require_declaration
("NEW_{mtype.mclass.c_name}")
1736 assert mtype
isa MGenericType
1737 var compiler
= self.compiler
1738 if mtype
.need_anchor
then
1739 hardening_live_open_type
(mtype
)
1740 link_unresolved_type
(self.frame
.mpropdef
.mclassdef
, mtype
)
1741 var recv
= self.frame
.arguments
.first
1742 var recv_type_info
= self.type_info
(recv
)
1743 self.require_declaration
(mtype
.const_color
)
1744 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, {recv_type_info}->resolution_table->types[{mtype.const_color}])", mtype
)
1746 compiler
.undead_types
.add
(mtype
)
1747 self.require_declaration
("type_{mtype.c_name}")
1748 return self.new_expr
("NEW_{mtype.mclass.c_name}({length}, &type_{mtype.c_name})", mtype
)
1751 redef fun native_array_def
(pname
, ret_type
, arguments
)
1753 var elttype
= arguments
.first
.mtype
1754 var nclass
= self.get_class
("NativeArray")
1755 var recv
= "((struct instance_{nclass.c_name}*){arguments[0]})->values"
1756 if pname
== "[]" then
1757 self.ret
(self.new_expr
("{recv}[{arguments[1]}]", ret_type
.as(not null)))
1759 else if pname
== "[]=" then
1760 self.add
("{recv}[{arguments[1]}]={arguments[2]};")
1762 else if pname
== "length" then
1763 self.ret
(self.new_expr
("((struct instance_{nclass.c_name}*){arguments[0]})->length", ret_type
.as(not null)))
1765 else if pname
== "copy_to" then
1766 var recv1
= "((struct instance_{nclass.c_name}*){arguments[1]})->values"
1767 self.add
("memmove({recv1}, {recv}, {arguments[2]}*sizeof({elttype.ctype}));")
1772 redef fun calloc_array
(ret_type
, arguments
)
1774 var mclass
= self.get_class
("ArrayCapable")
1775 var ft
= mclass
.mparameters
.first
1776 var res
= self.native_array_instance
(ft
, arguments
[1])
1780 fun link_unresolved_type
(mclassdef
: MClassDef, mtype
: MType) do
1781 assert mtype
.need_anchor
1782 var compiler
= self.compiler
1783 if not compiler
.live_unresolved_types
.has_key
(self.frame
.mpropdef
.mclassdef
) then
1784 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
] = new HashSet[MType]
1786 compiler
.live_unresolved_types
[self.frame
.mpropdef
.mclassdef
].add
(mtype
)
1790 redef class MMethodDef
1791 # The C function associated to a mmethoddef
1792 fun separate_runtime_function
: SeparateRuntimeFunction
1794 var res
= self.separate_runtime_function_cache
1796 var recv
= mclassdef
.bound_mtype
1797 var msignature
= msignature
.resolve_for
(recv
, recv
, mclassdef
.mmodule
, true)
1798 res
= new SeparateRuntimeFunction(self, recv
, msignature
, c_name
)
1799 self.separate_runtime_function_cache
= res
1803 private var separate_runtime_function_cache
: nullable SeparateRuntimeFunction
1805 # The C function associated to a mmethoddef, that can be stored into a VFT of a class
1806 # The first parameter (the reciever) is always typed by val* in order to accept an object value
1807 # The C-signature is always compatible with the intro
1808 fun virtual_runtime_function
: SeparateRuntimeFunction
1810 var res
= self.virtual_runtime_function_cache
1812 # Because the function is virtual, the signature must match the one of the original class
1813 var intromclassdef
= mproperty
.intro
.mclassdef
1814 var recv
= intromclassdef
.bound_mtype
1816 res
= separate_runtime_function
1817 if res
.called_recv
== recv
then
1818 self.virtual_runtime_function_cache
= res
1822 var msignature
= mproperty
.intro
.msignature
.resolve_for
(recv
, recv
, intromclassdef
.mmodule
, true)
1824 if recv
.ctype
== res
.called_recv
.ctype
and msignature
.c_equiv
(res
.called_signature
) then
1825 self.virtual_runtime_function_cache
= res
1829 res
= new SeparateRuntimeFunction(self, recv
, msignature
, "VIRTUAL_{c_name}")
1830 self.virtual_runtime_function_cache
= res
1835 private var virtual_runtime_function_cache
: nullable SeparateRuntimeFunction
1838 redef class MSignature
1839 # Does the C-version of `self` the same than the C-version of `other`?
1840 fun c_equiv
(other
: MSignature): Bool
1842 if self == other
then return true
1843 if arity
!= other
.arity
then return false
1844 for i
in [0..arity
[ do
1845 if mparameters
[i
].mtype
.ctype
!= other
.mparameters
[i
].mtype
.ctype
then return false
1847 if return_mtype
!= other
.return_mtype
then
1848 if return_mtype
== null or other
.return_mtype
== null then return false
1849 if return_mtype
.ctype
!= other
.return_mtype
.ctype
then return false
1855 # The C function associated to a methoddef separately compiled
1856 class SeparateRuntimeFunction
1857 super AbstractRuntimeFunction
1859 # The call-side static receiver
1860 var called_recv
: MType
1862 # The call-side static signature
1863 var called_signature
: MSignature
1865 # The name on the compiled method
1866 redef var build_c_name
: String
1868 # Statically call the original body instead
1869 var is_thunk
= false
1871 redef fun to_s
do return self.mmethoddef
.to_s
1873 # The C return type (something or `void`)
1874 var c_ret
: String is lazy
do
1875 var ret
= called_signature
.return_mtype
1883 # The C signature (only the parmeter part)
1884 var c_sig
: String is lazy
do
1885 var sig
= new FlatBuffer
1886 sig
.append
("({called_recv.ctype} self")
1887 for i
in [0..called_signature
.arity
[ do
1888 var mtype
= called_signature
.mparameters
[i
].mtype
1889 if i
== called_signature
.vararg_rank
then
1890 mtype
= mmethoddef
.mclassdef
.mmodule
.get_primitive_class
("Array").get_mtype
([mtype
])
1892 sig
.append
(", {mtype.ctype} p{i}")
1898 # The C type for the function pointer.
1899 var c_funptrtype
: String is lazy
do return "{c_ret}(*){c_sig}"
1901 # The arguments, as generated by `compile_to_c`
1902 private var arguments
: Array[RuntimeVariable] is noinit
1904 redef fun compile_to_c
(compiler
)
1906 var mmethoddef
= self.mmethoddef
1908 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1909 var v
= compiler
.new_visitor
1910 var selfvar
= new RuntimeVariable("self", called_recv
, recv
)
1911 var arguments
= new Array[RuntimeVariable]
1912 var frame
= new StaticFrame(v
, mmethoddef
, recv
, arguments
)
1915 var msignature
= called_signature
1916 var ret
= called_signature
.return_mtype
1918 var sig
= new FlatBuffer
1919 var comment
= new FlatBuffer
1922 sig
.append
(self.c_name
)
1924 comment
.append
("({selfvar}: {selfvar.mtype}")
1925 arguments
.add
(selfvar
)
1926 for i
in [0..msignature
.arity
[ do
1927 var mtype
= msignature
.mparameters
[i
].mtype
1928 if i
== msignature
.vararg_rank
then
1929 mtype
= v
.get_class
("Array").get_mtype
([mtype
])
1931 comment
.append
(", {mtype}")
1932 var argvar
= new RuntimeVariable("p{i}", mtype
, mtype
)
1933 arguments
.add
(argvar
)
1937 comment
.append
(": {ret}")
1939 compiler
.provide_declaration
(self.c_name
, "{sig};")
1940 self.arguments
= arguments
.to_a
1942 v
.add_decl
("/* method {self} for {comment} */")
1943 v
.add_decl
("{sig} \{")
1945 frame
.returnvar
= v
.new_var
(ret
)
1947 frame
.returnlabel
= v
.get_name
("RET_LABEL")
1950 var subret
= v
.call
(mmethoddef
, recv
, arguments
)
1952 assert subret
!= null
1953 v
.assign
(frame
.returnvar
.as(not null), subret
)
1956 mmethoddef
.compile_inside_to_c
(v
, arguments
)
1959 v
.add
("{frame.returnlabel.as(not null)}:;")
1961 v
.add
("return {frame.returnvar.as(not null)};")
1964 compiler
.names
[self.c_name
] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
1967 fun compile_trampolines
(compiler
: SeparateCompiler)
1969 var recv
= self.mmethoddef
.mclassdef
.bound_mtype
1970 var selfvar
= arguments
.first
1971 var ret
= called_signature
.return_mtype
1973 if mmethoddef
.is_intro
and recv
.ctype
== "val*" then
1974 var m
= mmethoddef
.mproperty
1975 var n2
= "CALL_" + m
.const_color
1976 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
1977 var v2
= compiler
.new_visitor
1978 v2
.add
"{c_ret} {n2}{c_sig} \{"
1979 v2
.require_declaration
(m
.const_color
)
1980 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
1982 v2
.add
"return {call}"
1990 if mmethoddef
.has_supercall
and recv
.ctype
== "val*" then
1992 var n2
= "CALL_" + m
.const_color
1993 compiler
.provide_declaration
(n2
, "{c_ret} {n2}{c_sig};")
1994 var v2
= compiler
.new_visitor
1995 v2
.add
"{c_ret} {n2}{c_sig} \{"
1996 v2
.require_declaration
(m
.const_color
)
1997 var call
= "(({c_funptrtype})({selfvar}->class->vft[{m.const_color}]))({arguments.join(", ")});"
1999 v2
.add
"return {call}"
2010 var const_color
: String is lazy
do return "COLOR_{c_name}"
2013 interface PropertyLayoutElement end
2015 redef class MProperty
2016 super PropertyLayoutElement
2019 redef class MPropDef
2020 super PropertyLayoutElement
2023 redef class AMethPropdef
2024 # The semi-global compilation does not support inlining calls to extern news
2025 redef fun can_inline
2028 if m
!= null and m
.mproperty
.is_init
and m
.is_extern
then return false