1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2008 Jean Privat <jean@pryen.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 # Compute and generate tables for classes and modules.
18 package compiling_global
20 private import compiling_icode
22 # Something that store color of table elements
24 var _colors
: HashMap[TableElt, Int] = new HashMap[TableElt, Int]
26 # The color of a table element.
27 fun color
(e
: TableElt): Int
32 # Is a table element already colored?
33 fun has_color
(e
: TableElt): Bool
35 return _colors
.has_key
(e
)
38 # Assign a color to a table element.
39 fun color
=(e
: TableElt, c
: Int)
43 for i
in [0..e
.length
[ do
44 _colors
[e
.item
(i
)] = idx
50 # All information and results of the global analysis.
53 # Associate global classes to compiled classes
54 readable var _compiled_classes
: HashMap[MMGlobalClass, CompiledClass] = new HashMap[MMGlobalClass, CompiledClass]
56 # The main module of the program globally analysed
57 readable var _module
: MMModule
59 # FIXME: do something better.
60 readable writable var _max_class_table_length
: Int = 0
62 init(module: MMModule)
68 class GlobalCompilerVisitor
69 special CompilerVisitor
70 # The global analysis result
71 readable var _global_analysis
: GlobalAnalysis
72 init(m
: MMModule, tc
: ToolContext, ga
: GlobalAnalysis)
79 # A compiled class is a class in a program
82 # The corresponding local class in the main module of the prgram
83 readable var _local_class
: MMLocalClass
85 # The identifier of the class
86 readable writable var _id
: Int = 0
88 # The full class table of the class
89 readable var _class_table
: Array[nullable TableElt] = new Array[nullable TableElt]
91 # The full instance table of the class
92 readable var _instance_table
: Array[nullable TableElt] = new Array[nullable TableElt]
94 # The proper class table part (no superclasses but all refinements)
95 readable writable var _class_layout
: TableEltComposite = new TableEltComposite(self)
97 # The proper instance table part (no superclasses but all refinements)
98 readable writable var _instance_layout
: TableEltComposite = new TableEltComposite(self)
100 init(c
: MMLocalClass) do _local_class
= c
103 redef class MMConcreteClass
104 # The table element of the subtype check
105 fun class_color_pos
: TableEltClassColor do return _class_color_pos
.as(not null)
106 var _class_color_pos
: nullable TableEltClassColor
108 # The proper local class table part (nor superclasses nor refinments)
109 readable var _class_layout
: Array[TableElt] = new Array[TableElt]
111 # The proper local instance table part (nor superclasses nor refinments)
112 readable var _instance_layout
: Array[TableElt] = new Array[TableElt]
114 # Build the local layout of the class and feed the module table
115 fun build_layout_in
(tc
: ToolContext, module_table
: Array[ModuleTableElt])
117 var clt
= _class_layout
118 var ilt
= _instance_layout
120 if global
.intro
== self then
121 module_table
.add
(new TableEltClassId(self))
122 var cpp
= new TableEltClassColor(self)
123 _class_color_pos
= cpp
124 module_table
.add
(cpp
)
125 clt
.add
(new TableEltClassInitTable(self))
127 for p
in local_local_properties
do
129 if pg
.intro
== p
then
130 if p
isa MMAttribute then
131 ilt
.add
(new TableEltAttr(p
))
132 else if p
isa MMMethod then
133 clt
.add
(new TableEltMeth(p
))
136 if p
isa MMMethod and p
.need_super
then
137 clt
.add
(new TableEltSuper(p
))
141 if not ilt
.is_empty
then
142 var teg
= new ModuleTableEltGroup
143 teg
.elements
.append
(ilt
)
144 module_table
.add
(teg
)
147 if not clt
.is_empty
then
148 var teg
= new ModuleTableEltGroup
149 teg
.elements
.append
(clt
)
150 module_table
.add
(teg
)
156 # The local table of the module (refers things introduced in the module)
157 var _local_table
: Array[ModuleTableElt] = new Array[ModuleTableElt]
159 # Builds the local tables and local classes layouts
160 fun local_analysis
(tc
: ToolContext)
162 for c
in local_classes
do
163 if c
isa MMConcreteClass then
164 c
.build_layout_in
(tc
, _local_table
)
169 # Do the complete global analysis
170 fun global_analysis
(cctx
: ToolContext): GlobalAnalysis
172 #print "Do the complete global analysis"
173 var ga
= new GlobalAnalysis(self)
174 var smallest_classes
= new Array[MMLocalClass]
175 var global_properties
= new HashSet[MMGlobalProperty]
176 var ctab
= new Array[TableElt]
177 var itab
= new Array[TableElt]
179 ctab
.add
(new TableEltClassSelfId)
180 itab
.add
(new TableEltVftPointer)
181 itab
.add
(new TableEltObjectId)
186 # We have to work on ALL the classes of the module
187 var classes
= new Array[MMLocalClass]
188 for c
in local_classes
do
189 c
.compute_super_classes
192 (new ClassSorter).sort
(classes
)
195 # Finish processing the class (if invisible)
197 c
.inherit_global_properties
199 # Associate a CompiledClass to the class
200 var cc
= new CompiledClass(c
)
201 ga
.compiled_classes
[c
.global
] = cc
203 # Assign a unique class identifier
204 # (negative are for primitive classes)
207 if c
.primitive_info
!= null then
209 pclassid
= pclassid
- 4
212 classid
= classid
+ 4
215 # Register is the class is a leaf
216 if c
.cshe
.direct_smallers
.is_empty
then
217 smallest_classes
.add
(c
)
220 # Store the colortableelt in the class table pool
221 var bc
= c
.global
.intro
222 assert bc
isa MMConcreteClass
223 ctab
.add
(bc
.class_color_pos
)
226 # Compute core and crown classes for colorization
227 var crown_classes
= new HashSet[MMLocalClass]
228 var core_classes
= new HashSet[MMLocalClass]
229 for c
in smallest_classes
do
230 while c
.cshe
.direct_greaters
.length
== 1 do
231 c
= c
.cshe
.direct_greaters
.first
234 core_classes
.add_all
(c
.cshe
.greaters_and_self
)
236 #print("nbclasses: {classes.length} leaves: {smallest_classes.length} crown: {crown_classes.length} core: {core_classes.length}")
238 # Colorize core color for typechecks
239 colorize
(ga
, ctab
, crown_classes
, 0)
241 # Compute tables for typechecks
244 var cc
= ga
.compiled_classes
[c
.global
]
245 if core_classes
.has
(c
) then
246 # For core classes, just build the table
247 build_tables_in
(cc
.class_table
, ga
, c
, ctab
)
248 if maxcolor
< cc
.class_table
.length
then maxcolor
= cc
.class_table
.length
250 # For other classes, it's easier: just append to the parent tables
251 var sc
= c
.cshe
.direct_greaters
.first
252 var scc
= ga
.compiled_classes
[sc
.global
]
253 assert cc
.class_table
.is_empty
254 cc
.class_table
.add_all
(scc
.class_table
)
255 var bc
= c
.global
.intro
256 assert bc
isa MMConcreteClass
257 var colpos
= bc
.class_color_pos
258 var colposcolor
= cc
.class_table
.length
259 ga
.color
(colpos
) = colposcolor
260 cc
.class_table
.add
(colpos
)
261 if maxcolor
< colposcolor
then maxcolor
= colposcolor
264 ga
.max_class_table_length
= maxcolor
+ 1
266 # Fill class table and instance tables pools
268 var cc
= ga
.compiled_classes
[c
.global
]
269 var cte
= cc
.class_layout
270 var ite
= cc
.instance_layout
271 for sc
in c
.crhe
.greaters_and_self
do
272 if sc
isa MMConcreteClass then
273 cte
.add
(sc
, sc
.class_layout
)
274 ite
.add
(sc
, sc
.instance_layout
)
278 if core_classes
.has
(c
) then
279 if cte
.length
> 0 then
282 if ite
.length
> 0 then
288 # Colorize all elements in pools tables
289 colorize
(ga
, ctab
, crown_classes
, maxcolor
+1)
290 colorize
(ga
, itab
, crown_classes
, 0)
292 # Build class and instance tables now things are colored
293 ga
.max_class_table_length
= 0
295 var cc
= ga
.compiled_classes
[c
.global
]
296 if core_classes
.has
(c
) then
297 # For core classes, just build the table
298 build_tables_in
(cc
.class_table
, ga
, c
, ctab
)
299 build_tables_in
(cc
.instance_table
, ga
, c
, itab
)
301 # For other classes, it's easier: just append to the parent tables
302 var sc
= c
.cshe
.direct_greaters
.first
303 var scc
= ga
.compiled_classes
[sc
.global
]
305 cc
.class_table
.add_all
(scc
.class_table
)
306 var bc
= c
.global
.intro
307 assert bc
isa MMConcreteClass
308 var colpos
= bc
.class_color_pos
309 cc
.class_table
[ga
.color
(colpos
)] = colpos
310 while cc
.class_table
.length
<= maxcolor
do
311 cc
.class_table
.add
(null)
313 append_to_table
(ga
, cc
.class_table
, cc
.class_layout
)
314 assert cc
.instance_table
.is_empty
315 cc
.instance_table
.add_all
(scc
.instance_table
)
316 append_to_table
(ga
, cc
.instance_table
, cc
.instance_layout
)
323 private fun append_to_table
(cc
: ColorContext, table
: Array[nullable TableElt], cmp
: TableEltComposite)
325 for j
in [0..cmp
.length
[ do
327 cc
.color
(e
) = table
.length
332 private fun build_tables_in
(table
: Array[nullable TableElt], ga
: GlobalAnalysis, c
: MMLocalClass, elts
: Array[TableElt])
334 var tab
= new HashMap[Int, TableElt]
337 if e
.is_related_to
(c
) then
338 var col
= ga
.color
(e
)
339 var l
= col
+ e
.length
348 if tab
.has_key
(i
) then
350 for j
in [0..e
.length
[ do
362 fun colorize
(ga
: GlobalAnalysis, elts
: Array[TableElt], classes
: Collection[MMLocalClass], startcolor
: Int)
364 var colors
= new HashMap[Int, Array[TableElt]]
365 var rel_classes
= new Array[MMLocalClass]
369 if ga
.has_color
(e
) then
374 if e
.is_related_to
(c
) then
378 var trycolor
= startcolor
379 while trycolor
!= color
do
381 for c
in rel_classes
do
384 if colors
.has_key
(trycolor
+ idx
) and not free_color
(colors
[trycolor
+ idx
], c
) then
385 trycolor
= trycolor
+ idx
+ 1
395 for idx
in [0..len
[ do
396 if colors
.has_key
(color
+ idx
) then
397 colors
[color
+ idx
].add
(e
)
399 colors
[color
+ idx
] = [e
]
405 private fun free_color
(es
: Array[TableElt], c
: MMLocalClass): Bool
408 if e2
.is_related_to
(c
) then
415 # Compile module and class tables
416 fun compile_tables_to_c
(v
: GlobalCompilerVisitor)
418 for m
in mhe
.greaters_and_self
do
419 m
.compile_local_table_to_c
(v
)
422 for c
in local_classes
do
423 c
.compile_tables_to_c
(v
)
425 var s
= new Buffer.from
("classtable_t TAG2VFT[4] = \{NULL")
426 for t
in ["Int","Char","Bool"] do
427 if has_global_class_named
(t
.to_symbol
) then
428 s
.append
(", (const classtable_t)VFT_{t}")
437 # Declare class table (for _sep.h)
438 fun declare_class_tables_to_c
(v
: GlobalCompilerVisitor)
440 for c
in local_classes
do
441 if c
.global
.module == self then
442 c
.declare_tables_to_c
(v
)
447 # Compile main part (for _table.c)
448 fun compile_main_part
(v
: GlobalCompilerVisitor)
450 v
.add_instr
("int main(int argc, char **argv) \{")
452 v
.add_instr
("prepare_signals();")
453 v
.add_instr
("glob_argc = argc; glob_argv = argv;")
454 var sysname
= once
"Sys".to_symbol
455 if not has_global_class_named
(sysname
) then
458 var sys
= class_by_name
(sysname
)
459 var name
= once
"main".to_symbol
460 if not sys
.has_global_property_by_name
(name
) then
463 var mainm
= sys
.select_method
(name
)
464 v
.add_instr
("G_sys = NEW_Sys();")
465 v
.add_instr
("{mainm.cname}(G_sys);")
468 v
.add_instr
("return 0;")
474 fun compile_mod_to_c
(v
: GlobalCompilerVisitor)
476 v
.add_decl
("extern const char *LOCATE_{name};")
477 if not v
.tc
.global
then
478 v
.add_decl
("extern const int SFT_{name}[];")
481 for e
in _local_table
do
484 value
= "{e.value(v.global_analysis)}"
486 value
= "SFT_{name}[{i}]"
489 e
.compile_macros
(v
, value
)
491 for c
in local_classes
do
492 if not c
isa MMConcreteClass then continue
493 for pg
in c
.global_properties
do
495 if p
.local_class
== c
and p
isa MMMethod then
496 p
.compile_property_to_c
(v
)
498 if pg
.is_init_for
(c
) then
499 # Declare constructors
500 var params
= new Array[String]
501 for j
in [0..p
.signature
.arity
[ do
502 params
.add
("val_t p{j}")
504 v
.add_decl
("val_t NEW_{c}_{p.global.intro.cname}({params.join(", ")});")
510 # Compile module file for the current module
511 fun compile_local_table_to_c
(v
: GlobalCompilerVisitor)
513 v
.add_instr
("const char *LOCATE_{name} = \"{location.file}\
";")
515 if v
.tc
.global
or _local_table
.is_empty
then
519 v
.add_instr
("const int SFT_{name}[{_local_table.length}] = \{")
521 for e
in _local_table
do
522 v
.add_instr
(e
.value
(v
.global_analysis
) + ",")
529 ###############################################################################
531 # An element of a class, an instance or a module table
532 abstract class AbsTableElt
533 # Compile the macro needed to use the element and other related elements
534 fun compile_macros
(v
: GlobalCompilerVisitor, value
: String) is abstract
537 # An element of a class or an instance table
538 # Such an elements represent method function pointers, attribute values, etc.
539 abstract class TableElt
541 # Is the element conflict to class `c' (used for coloring)
542 fun is_related_to
(c
: MMLocalClass): Bool is abstract
544 # Number of sub-elements. 1 if none
545 fun length
: Int do return 1
547 # Access the ith subelement.
548 fun item
(i
: Int): TableElt do return self
550 # Return the value of the element for a given class
551 fun compile_to_c
(v
: GlobalCompilerVisitor, c
: MMLocalClass): String is abstract
554 # An element of a module table
555 # Such an elements represent colors or identifiers
556 abstract class ModuleTableElt
558 # Return the value of the element once the global analisys is performed
559 fun value
(ga
: GlobalAnalysis): String is abstract
562 # An element of a module table that represents a group of TableElt defined in the same local class
563 class ModuleTableEltGroup
564 special ModuleTableElt
565 readable var _elements
: Array[TableElt] = new Array[TableElt]
567 redef fun value
(ga
) do return "{ga.color(_elements.first)} /* Group of ? */"
568 redef fun compile_macros
(v
, value
)
571 for e
in _elements
do
572 e
.compile_macros
(v
, "{value} + {i}")
578 # An element that represents a class property
579 abstract class TableEltProp
581 var _property
: MMLocalProperty
583 init(p
: MMLocalProperty)
589 # An element that represents a function pointer to a global method
592 redef fun compile_macros
(v
, value
)
594 var pg
= _property
.global
595 v
.add_decl
("#define {pg.meth_call}(recv) (({pg.intro.cname}_t)CALL((recv), ({value})))")
598 redef fun compile_to_c
(v
, c
)
600 var p
= c
[_property
.global
]
605 # An element that represents a function pointer to the super method of a local method
608 redef fun compile_macros
(v
, value
)
611 v
.add_decl
("#define {p.super_meth_call}(recv) (({p.cname}_t)CALL((recv), ({value})))")
614 redef fun compile_to_c
(v
, c
)
616 var pc
= _property
.local_class
617 var g
= _property
.global
618 var lin
= c
.che
.linear_extension
621 #print "{c.module}::{c} for {pc.module}::{pc}::{_property} try {s.module}:{s}"
624 else if found
and c
.che
< s
then
625 if s
.has_global_property
(g
) then
626 #print "found {s.module}::{s}::{p}"
635 # An element that represents the value stored for a global attribute
638 redef fun compile_macros
(v
, value
)
640 var pg
= _property
.global
641 v
.add_decl
("#define {pg.attr_access}(recv) ATTR(recv, ({value}))")
644 redef fun compile_to_c
(v
, c
)
646 var ga
= v
.global_analysis
647 var p
= c
[_property
.global
]
648 return "/* {ga.color(self)}: Attribute {c}::{p} */"
652 # An element representing a class information
653 class AbsTableEltClass
655 # The local class where the information comes from
656 var _local_class
: MMLocalClass
658 init(c
: MMLocalClass)
663 # The C macro name refering the value
664 fun symbol
: String is abstract
666 redef fun compile_macros
(v
, value
)
668 v
.add_decl
("#define {symbol} ({value})")
672 # An element of a class table representing a class information
675 special AbsTableEltClass
676 redef fun is_related_to
(c
)
678 var bc
= c
.module[_local_class
.global
]
683 # An element representing the id of a class in a module table
684 class TableEltClassId
685 special ModuleTableElt
686 special AbsTableEltClass
687 redef fun symbol
do return _local_class
.global
.id_id
691 return "{ga.compiled_classes[_local_class.global].id} /* Id of {_local_class} */"
695 # An element representing the constructor marker position in a class table
696 class TableEltClassInitTable
697 special TableEltClass
698 redef fun symbol
do return _local_class
.global
.init_table_pos_id
700 redef fun compile_to_c
(v
, c
)
702 var ga
= v
.global_analysis
703 var cc
= ga
.compiled_classes
[_local_class
.global
]
704 var linext
= c
.cshe
.reverse_linear_extension
706 while linext
[i
].global
!= _local_class
.global
do
709 return "{i} /* {ga.color(self)}: {c} < {cc.local_class}: superclass init_table position */"
713 # An element used for a cast
714 # Note: this element is both a TableElt and a ModuleTableElt.
715 # At the TableElt offset, there is the id of the super-class
716 # At the ModuleTableElt offset, there is the TableElt offset (ie. the color of the super-class).
717 class TableEltClassColor
718 special TableEltClass
719 special ModuleTableElt
720 redef fun symbol
do return _local_class
.global
.color_id
724 return "{ga.color(self)} /* Color of {_local_class} */"
727 redef fun compile_to_c
(v
, c
)
729 var ga
= v
.global_analysis
730 var cc
= ga
.compiled_classes
[_local_class
.global
]
731 return "{cc.id} /* {ga.color(self)}: {c} < {cc.local_class}: superclass typecheck marker */"
735 # A Group of elements introduced in the same global-class that are colored together
736 class TableEltComposite
738 var _table
: Array[TableElt]
739 var _cc
: CompiledClass
740 var _offsets
: HashMap[MMLocalClass, Int]
741 redef fun length
do return _table
.length
742 redef fun is_related_to
(c
) do return c
.cshe
<= _cc
.local_class
744 fun add
(c
: MMLocalClass, tab
: Array[TableElt])
746 _offsets
[c
] = _table
.length
750 redef fun item
(i
) do return _table
[i
]
752 redef fun compile_to_c
(v
, c
) do abort
754 init(cc
: CompiledClass)
757 _table
= new Array[TableElt]
758 _offsets
= new HashMap[MMLocalClass, Int]
762 # The element that represent the class id
763 class TableEltClassSelfId
765 redef fun is_related_to
(c
) do return true
766 redef fun compile_to_c
(v
, c
)
768 var ga
= v
.global_analysis
769 return "{v.global_analysis.compiled_classes[c.global].id} /* {ga.color(self)}: Identity */"
773 # The element that represent the object id
774 class TableEltObjectId
776 redef fun is_related_to
(c
) do return true
777 redef fun compile_to_c
(v
, c
)
779 var ga
= v
.global_analysis
780 return "/* {ga.color(self)}: Object_id */"
785 class TableEltVftPointer
787 redef fun is_related_to
(c
) do return true
788 redef fun compile_to_c
(v
, c
)
790 var ga
= v
.global_analysis
791 return "/* {ga.color(self)}: Pointer to the classtable */"
795 ###############################################################################
797 # Used to sort local class in a deterministic total order
798 # The total order superset the class refinement and the class specialisation relations
800 special AbstractSorter[MMLocalClass]
801 redef fun compare
(a
, b
) do return a
.compare
(b
)
805 redef class MMLocalClass
806 # Comparaison in a total order that superset the class refinement and the class specialisation relations
807 fun compare
(b
: MMLocalClass): Int
812 else if a
.module.mhe
< b
.module then
814 else if b
.module.mhe
< a
.module then
824 return b
.name
.to_s
<=> a
.name
.to_s
828 # Declaration and macros related to the class table
829 fun declare_tables_to_c
(v
: GlobalCompilerVisitor)
832 var pi
= primitive_info
833 v
.add_decl
("extern const classtable_elt_t VFT_{name}[];")
834 if name
== "NativeArray".to_symbol
then
835 v
.add_decl
("val_t NEW_NativeArray(size_t length, size_t size);")
836 else if pi
== null then
837 # v.add_decl("val_t NEW_{name}(void);")
838 else if not pi
.tagged
then
840 var tbox
= "struct TBOX_{name}"
841 v
.add_decl
("{tbox} \{ const classtable_elt_t * vft; bigint object_id; {t} val;};")
842 v
.add_decl
("val_t BOX_{name}({t} val);")
843 v
.add_decl
("#define UNBOX_{name}(x) ((({tbox} *)(VAL2OBJ(x)))->val)")
847 # Compilation of table and new (or box)
848 fun compile_tables_to_c
(v
: GlobalCompilerVisitor)
850 var cc
= v
.global_analysis
.compiled_classes
[self.global
]
851 var ctab
= cc
.class_table
852 var clen
= ctab
.length
853 if v
.global_analysis
.max_class_table_length
> ctab
.length
then
854 clen
= v
.global_analysis
.max_class_table_length
857 v
.add_instr
("const classtable_elt_t VFT_{name}[{clen}] = \{")
861 v
.add_instr
("\{0} /* Class Hole :( */,")
863 v
.add_instr
("\{(bigint) {e.compile_to_c(v, self)}},")
866 if clen
> ctab
.length
then
867 v
.add_instr
("\{0},"*(clen-ctab
.length
))
871 var itab
= cc
.instance_table
874 v
.add_instr
("/* Instance Hole :( */")
876 v
.add_instr
(e
.compile_to_c
(v
, self))
880 var pi
= primitive_info
881 if name
== "NativeArray".to_symbol
then
882 v
.add_instr
("val_t NEW_NativeArray(size_t length, size_t size) \{")
884 v
.add_instr
("Nit_NativeArray array;")
885 v
.add_instr
("array = (Nit_NativeArray)alloc(sizeof(struct Nit_NativeArray) + ((length - 1) * size));")
886 v
.add_instr
("array->vft = (classtable_elt_t*)VFT_{name};")
887 v
.add_instr
("array->object_id = object_id_counter;")
888 v
.add_instr
("object_id_counter = object_id_counter + 1;")
889 v
.add_instr
("array->size = length;")
890 v
.add_instr
("return OBJ2VAL(array);")
893 else if pi
== null then
895 var iself
= new IRegister(get_type
)
897 var iroutine
= new IRoutine(new Array[IRegister], iself
)
898 var icb
= new ICodeBuilder(module, iroutine
)
899 var obj
= new INative("OBJ2VAL(obj)", null)
903 for g
in global_properties
do
905 var t
= p
.signature
.return_type
906 if p
isa MMAttribute and t
!= null then
908 if ir
== null then continue
909 # FIXME: Not compatible with sep compilation
910 var e
= icb
.inline_routine
(ir
, iselfa
, null).as(not null)
911 icb
.stmt
(new IAttrWrite(p
, iself
, e
))
915 var cname
= "NEW_{name}"
916 var args
= iroutine
.compile_signature_to_c
(v
, cname
, "new {name}", null, null)
919 v
.add_decl
("obj_t obj;")
920 v
.add_instr
("obj = alloc(sizeof(val_t) * {itab.length});")
921 v
.add_instr
("obj->vft = (classtable_elt_t*)VFT_{name};")
922 v
.add_instr
("obj[1].object_id = object_id_counter;")
923 v
.add_instr
("object_id_counter = object_id_counter + 1;")
924 var r
= iroutine
.compile_to_c
(v
, cname
, args
).as(not null)
925 v
.add_instr
("return {r};")
926 ctx_old
.append
(v
.ctx
)
934 var iself
= new IRegister(get_type
)
936 var iroutine
= new IRoutine(iselfa
, null)
937 var icb
= new ICodeBuilder(module, iroutine
)
938 for g
in global_properties
do
940 var t
= p
.signature
.return_type
941 if p
isa MMAttribute and t
!= null and not t
.is_nullable
then
942 icb
.add_attr_check
(p
, iself
)
945 var cname
= "CHECKNEW_{name}"
946 var args
= iroutine
.compile_signature_to_c
(v
, cname
, "check new {name}", null, null)
949 iroutine
.compile_to_c
(v
, cname
, args
)
950 ctx_old
.append
(v
.ctx
)
956 var init_table_size
= cshe
.greaters
.length
+ 1
957 var init_table_decl
= "int init_table[{init_table_size}] = \{0{", 0" * (init_table_size-1)}};"
959 for g
in global_properties
do
961 # FIXME skip invisible constructors
962 if not p
.global
.is_init_for
(self) then continue
963 assert p
isa MMMethod
965 var iself
= new IRegister(get_type
)
966 var iparams
= new Array[IRegister]
967 for i
in [0..p
.signature
.arity
[ do iparams
.add
(new IRegister(p
.signature
[i
]))
968 var iroutine
= new IRoutine(iparams
, iself
)
969 iroutine
.location
= p
.iroutine
.location
970 var icb
= new ICodeBuilder(module, iroutine
)
972 var inew
= new INative("NEW_{name}()", null)
976 iargs
.add_all
(iparams
)
977 icb
.stmt
(new INative("{p.cname}(@@@{", @@@"*iparams.length}, init_table)", iargs
))
978 icb
.stmt
(new INative("CHECKNEW_{name}(@@@)", [iself
]))
980 var cname
= "NEW_{self}_{p.global.intro.cname}"
981 var new_args
= iroutine
.compile_signature_to_c
(v
, cname
, "new {self} {p.full_name}", null, null)
984 v
.add_instr
(init_table_decl
)
985 var e
= iroutine
.compile_to_c
(v
, cname
, new_args
).as(not null)
986 v
.add_instr
("return {e};")
987 ctx_old
.append
(v
.ctx
)
992 else if not pi
.tagged
then
994 var tbox
= "struct TBOX_{name}"
995 v
.add_instr
("val_t BOX_{name}({t} val) \{")
997 v
.add_instr
("{tbox} *box = ({tbox}*)alloc(sizeof({tbox}));")
998 v
.add_instr
("box->vft = VFT_{name};")
999 v
.add_instr
("box->val = val;")
1000 v
.add_instr
("box->object_id = object_id_counter;")
1001 v
.add_instr
("object_id_counter = object_id_counter + 1;")
1002 v
.add_instr
("return OBJ2VAL(box);")
1009 redef class MMMethod
1010 fun compile_property_to_c
(v
: CompilerVisitor)
1015 var more_params
: nullable String = null
1016 if global
.is_init
then more_params
= "int* init_table"
1017 var args
= ir
.compile_signature_to_c
(v
, cname
, full_name
, null, more_params
)
1019 v
.ctx
= new CContext
1021 v
.out_contexts
.clear
1023 var itpos
: nullable String = null
1024 if global
.is_init
then
1025 itpos
= "itpos{v.new_number}"
1026 v
.add_decl
("int {itpos} = VAL2OBJ({args.first})->vft[{local_class.global.init_table_pos_id}].i;")
1027 v
.add_instr
("if (init_table[{itpos}]) return;")
1030 var s
= ir
.compile_to_c
(v
, cname
, args
)
1032 if itpos
!= null then
1033 v
.add_instr
("init_table[{itpos}] = 1;")
1036 v
.add_instr
("return;")
1038 v
.add_instr
("return ", s
, ";")
1041 ctx_old
.append
(v
.ctx
)
1046 for ctx
in v
.out_contexts
do v
.ctx
.merge
(ctx
)