1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2009 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 # Generate C code from intermediate code representation
18 package compiling_icode
21 private import analysis
24 # Compiler context from ICode to C
25 class I2CCompilerVisitor
27 var _ids
: HashMap[Object, String] = new HashMap[Object, String]
28 # Associate other things
29 var _ids2
: HashMap[Object, String] = new HashMap[Object, String]
31 # Return the string associated with a register
32 fun register
(e
: IRegister): String
34 if e
.stype
isa MMTypeNone then return "NIT_NULL"
36 if closure
and not e
.is_local
then ids
= _ids2
37 if ids
.has_key
(e
) then
42 # The register is dead
48 var strs
: HashMap[Int, String]
49 if e
.in_tag_slots
then
50 strs
= once
new HashMap[Int, String]
51 if not strs
.has_key
(i
) then strs
[i
] = "REGB{i}"
52 else if closure
and not e
.is_local
then
53 strs
= once
new HashMap[Int, String]
54 if not strs
.has_key
(i
) then strs
[i
] = "closctx->REG[{i}]"
56 strs
= once
new HashMap[Int, String]
57 if not strs
.has_key
(i
) then strs
[i
] = "fra.me.REG[{i}]"
66 # Return the strings associated with registers
67 fun registers
(a
: Collection[IRegister]): Array[String]
69 var r
= new Array[String].with_capacity
(a
.length
)
76 var _last_number
: Int = 0
77 # Give a new unique number (unique for the visitor)
84 # Return the string associated with a escape label
85 fun lab
(e
: ISeq): String
87 if _ids
.has_key
(e
) then
90 var s
= "label{new_number}"
96 # The rank (number) of each closure
97 readable var _closures
: HashMap[IClosureDecl, String] = new HashMap[IClosureDecl, String]
99 # The functionnal type of each closure
100 readable var _clostypes
: HashMap[IClosureDecl, String] = new HashMap[IClosureDecl, String]
102 # label locally accessibles
103 readable writable var _local_labels
: HashSet[ISeq] = new HashSet[ISeq]
105 # Not local escaped labels
106 # The integer value is an index identifying the label
107 readable writable var _escaped_labels
: HashMap[ISeq, Int] = new HashMap[ISeq, Int]
109 # Register a escape to a non local label and return an index identifying the label
110 fun register_escape_label
(e
: ISeq): Int
112 if _escaped_labels
.has_key
(e
) then
113 return _escaped_labels
[e
]
115 var res
= _escaped_labels
.length
+ 1
116 _escaped_labels
[e
] = res
121 # Add a C label mark (if needed)
122 fun add_label
(e
: ISeq)
124 if _ids
.has_key
(e
) then
125 add_instr
("{_ids[e]}: while(0);")
129 # Add a goto to a label (even outside a closure)
130 fun add_goto
(seq
: ISeq)
132 if local_labels
.has
(seq
) then
133 add_instr
("goto {lab(seq)};")
136 var ind
= register_escape_label
(seq
)
137 add_instr
("closctx->has_broke = {ind};")
138 add_instr
("goto {lab(return_label.as(not null))};")
142 # Association between IEscapeMarks and visited ISeq
143 readable var _marks_to_seq
: Map[IEscapeMark, ISeq] = new HashMap[IEscapeMark, ISeq]
145 # Are we in a closure ?
146 readable writable var _closure
: Bool = false
148 # The current compiler visitor
149 readable var _visitor
: CompilerVisitor
151 # The current compiled iroutine
152 readable var _iroutine
: IRoutine
154 # The return label of the current compiling C function
155 readable writable var _return_label
: nullable ISeq = null
157 fun add_decl
(s
: String)
162 # Prepare a new instuction (indent, comment)
163 # Caller must ensure to add a new line to finish its instr
164 fun new_instr
: Writer
166 var w
= visitor
.writer
167 var l
= _next_location
169 visitor
.add_indent
(w
)
171 w
.add
(l
.file
.filename
)
173 w
.add
(l
.line_start
.to_s
)
175 _next_location
= null
177 visitor
.add_indent
(w
)
181 fun add_instr
(s
: String)
183 new_instr
.add
(s
).add
("\n")
196 fun add_assignment
(to
, from
: String)
198 visitor
.add_assignment
(to
, from
)
201 var _last_location
: nullable Location = null
202 var _next_location
: nullable Location = null
204 # Add location information in a comment
205 # Do nothing if the last location added is the same
206 fun add_location
(l
: nullable Location)
208 var last
= _last_location
209 if last
== l
or l
== null then return
211 if last
!= null and last
.file
== l
.file
and last
.line_start
== l
.line_start
then
218 # The C fonction name of the iroutine
219 readable var _basecname
: String
221 init(v
: CompilerVisitor, ir
: IRoutine, cname
: String)
230 # Declare and start a C function that match the routine
231 # Return what must be given to compile_inside_to_c or to compile_to_c
232 # After the method, an openinig { and and indent is added.
233 # So, do not forget to add a sub_context, to unintent and to add a closing }
234 fun compile_signature_to_c
(v
: CompilerVisitor, cname
: String, human_name
: nullable String, before_params
, after_params
: nullable String): Array[String]
236 var cargs
= new Array[String]
237 var cparams
= new Array[String]
238 if before_params
!= null then cparams
.add
(before_params
)
239 for i
in [0..params
.length
[ do
241 cparams
.add
("val_t p{i}")
243 if closure_decls
!= null then
244 cparams
.add
("struct stack_frame_t *closctx_param")
245 for i
in [0..closure_decls
.length
[ do
246 var closcn
= "CLOS_{cname}_{i}"
247 var cs
= closure_decls
[i
].closure
.signature
248 var subparams
= new Array[String] # Parameters of the closure
249 subparams
.add
("struct stack_frame_t *")
250 for j
in [0..cs
.arity
[ do
251 subparams
.add
("val_t")
254 if cs
.return_type
!= null then rr
= "val_t"
255 v
.add_decl
("typedef {rr} (*{closcn})({subparams.join(", ")});")
256 cargs
.add
("clos_fun{i}")
257 cparams
.add
("fun_t clos_fun{i}")
260 if after_params
!= null then cparams
.add
(after_params
)
262 if result
!= null then r
= "val_t"
264 if cparams
.is_empty
then
267 p
= cparams
.join
(", ")
269 if human_name
!= null then v
.add_decl
("static const char * const LOCATE_{cname} = \"{human_name}\
";")
270 v
.add_decl
("{r} {cname}({p});")
271 v
.add_decl
("typedef {r} (*{cname}_t)({p});")
272 v
.add_instr
("{r} {cname}({p})\{")
277 # Compile the body of the routine, return the result value is any
278 fun compile_inside_to_c
(v
: I2CCompilerVisitor, args
: Array[String]): nullable String
280 # Create and push the stack frame
282 if location
!= null then
283 ll
= location
.line_start
285 # Encapsulate the frame ('me') in a larger structure ('fra') that has enough space to store the local variables (REG)
286 if std_slots_nb
> 1 then
287 v
.add_decl
("struct \{struct stack_frame_t me; val_t MORE_REG[{std_slots_nb-1}];\} fra;")
289 v
.add_decl
("struct \{struct stack_frame_t me;\} fra;")
291 v
.add_instr
("fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;")
292 v
.add_instr
("fra.me.file = LOCATE_{v.visitor.mmmodule.cname};")
293 v
.add_instr
("fra.me.line = {ll};")
294 v
.add_instr
("fra.me.meth = LOCATE_{v.basecname};")
295 v
.add_instr
("fra.me.has_broke = 0;")
296 v
.add_instr
("fra.me.REG_size = {std_slots_nb};")
298 # Declare/initialize local variables
299 for i
in [0..std_slots_nb
[ do
300 v
.add_instr
("fra.me.REG[{i}] = NIT_NULL;")
302 for i
in [0..tag_slots_nb
[ do
303 v
.add_decl
("val_t REGB{i};")
305 var iclosdecls
= closure_decls
306 if iclosdecls
!= null then
307 v
.add_decl
("fun_t CREG[{iclosdecls.length}];")
308 v
.add_instr
("fra.me.closure_ctx = closctx_param;")
309 v
.add_instr
("fra.me.closure_funs = CREG;")
313 if r
.slot_index
!= null then v
.add_assignment
(v
.register
(r
), args
[k
])
316 if iclosdecls
!= null then
317 for i
in [0..iclosdecls
.length
[ do
318 var iclosdecl
= iclosdecls
[i
]
319 v
.add_instr
("CREG[{i}] = {args[params.length+i]};")
320 v
.closures
[iclosdecl
] = i
.to_s
321 var cs
= iclosdecl
.closure
.signature
# Closure signature
322 var subparams
= new Array[String] # Parameters of the closure
323 subparams
.add
("struct stack_frame_t *")
324 for j
in [0..cs
.arity
[ do
329 if cs
.return_type
!= null then r
= "val_t"
330 v
.clostypes
[iclosdecl
] = "{r} (*)({subparams.join(", ")})"
333 v
.add_decl
("val_t tmp;")
336 var old_rl
= v
.return_label
337 v
.return_label
= body
342 v
.add_instr
("stack_frame_head = fra.me.prev;")
343 v
.return_label
= old_rl
352 # Full compilation of the routine
353 # cv must be in the correct function
354 fun compile_to_c
(cv
: CompilerVisitor, cname
: String, args
: Array[String]): nullable String
356 var v
= new I2CCompilerVisitor(cv
, self, cname
)
357 return compile_inside_to_c
(v
, args
)
362 # Full compilation of the icode
363 fun compile_to_c
(v
: I2CCompilerVisitor) is abstract
365 # Is a result really needed
366 private fun need_result
: Bool
369 return r
!= null and r
.slot_index
!= null
372 # Store s in the result value of self
373 private fun store_result
(v
: I2CCompilerVisitor, w
: nullable Writer)
376 if r
!= null and r
.slot_index
!= null then
379 w2
.add
(v
.register
(r
))
383 else if w
!= null and not is_pure
then
384 # ICode with side effects must be evaluated
385 # even if the result is not wanted
392 # Prepare a writer if the expression icode need to be compiled
393 # * Result assigment is automatic if needed
394 private fun new_result
(v
: I2CCompilerVisitor): Writer
396 assert need_result
or not is_pure
399 if r
!= null and r
.slot_index
!= null then
400 w2
.add
(v
.register
(r
))
410 redef fun compile_to_c
(v
)
412 v
.add_location
(location
)
413 v
.local_labels
.add
(self)
414 var mark
= iescape_mark
415 if mark
!= null then v
.marks_to_seq
[mark
] = self
424 redef fun compile_to_c
(v
)
426 v
.add_location
(location
)
428 w
.add
("if (UNTAG_Bool(")
429 w
.add
(v
.register
(expr
))
431 if not then_seq
.icodes
.is_empty
then
433 then_seq
.compile_to_c
(v
)
436 if not else_seq
.icodes
.is_empty
then
437 v
.add_instr
("\} else \{")
439 else_seq
.compile_to_c
(v
)
447 redef fun compile_to_c
(v
)
449 v
.add_location
(location
)
450 v
.local_labels
.add
(self)
451 var mark
= iescape_mark
452 if mark
!= null then v
.marks_to_seq
[mark
] = self
453 v
.add_instr
("while(1) \{")
465 redef fun compile_to_c
(v
)
467 v
.add_location
(location
)
468 v
.add_goto
(v
.marks_to_seq
[iescape_mark
])
473 redef fun compile_to_c
(v
)
475 v
.add_location
(location
)
476 var args
= v
.registers
(exprs
)
478 # Compile closure definitions
479 var old_el
= v
.escaped_labels
480 var closdefs
= closure_defs
481 var closctx
: nullable String = null # The closure context of closdefs
482 if closdefs
!= null then
483 # Get the closure context
487 closctx
= "(&(fra.me))"
490 # First aditionnal arguments is the closure context
493 # We are in a new escape boundary
494 v
.escaped_labels
= new HashMap[ISeq, Int]
496 # Compile each closures and add each sub-function as an other additionnal parameter
497 for cd
in closdefs
do
499 var cn
= cd
.compile_closure
(v
)
507 # Compile the real call
508 var call
= compile_call_to_c
(v
, args
)
509 var res
: nullable Writer = call
512 if closctx
!= null then
513 var els
= v
.escaped_labels
514 v
.escaped_labels
= old_el
515 # Is there possible escapes?
516 if not els
.is_empty
then
517 # Call in a tmp variable to avoid 'break' overwrite
531 # What are the expected escape indexes
532 v
.new_instr
.add
("switch (").add
(closctx
).add
("->has_broke) \{\n")
534 # No escape occured, continue as usual
535 v
.add_instr
("case 0: break;")
536 var lls
= v
.local_labels
537 var iels
= els
.iterator
538 var forward_escape
= false
542 # Local escape occured
543 # Clear the has_broke information and go to the target
544 v
.new_instr
.add
("case ").add
(iels
.item
.to_s
).add
(": ").add
(closctx
).add
("->has_broke = 0; goto ").add
(v
.lab
(seq
)).add
(";\n")
546 # Forward escape occured: register the escape label
548 v
.register_escape_label
(seq
)
549 forward_escape
= true
553 # If forward escape occured, just pass to the next one
554 if forward_escape
then
555 # Do not need to copy 'has_broke' value since it is shared by the next one.
556 # So just exit the C function.
557 v
.new_instr
.add
("default: goto ").add
(v
.lab
(v
.return_label
.as(not null))).add
(";\n")
565 var w
= new_result
(v
)
570 # The single invocation witout fancy stuffs
571 private fun compile_call_to_c
(v
: I2CCompilerVisitor, args
: Array[String]): Writer is abstract
575 redef fun compile_call_to_c
(v
, args
)
579 # do not compile explicit calls from native methods
580 # theses are really manually called in the native implementation
581 if is_explicit_from_extern
then return w
584 if prop
.global
.is_init
then args
.add
("init_table")
585 w
.add
(prop
.global
.meth_call
)
589 w
.add_all
(args
, ", ")
596 redef fun compile_call_to_c
(v
, args
)
598 # do not compile explicit calls from native methods
599 # theses are really manually called in the native implementation
600 if is_explicit_from_extern
then return new Writer
603 if prop
.global
.is_init
then args
.add
("init_table")
605 w
.add
(prop
.super_meth_call
)
609 w
.add_all
(args
, ", ")
616 redef fun compile_call_to_c
(v
, args
)
620 # do not compile explicit calls from native methods
621 # theses are really manually called in the native implementation
622 if is_explicit_from_extern
then return w
625 w
.add
(stype
.local_class
.to_s
)
627 w
.add
(property
.global
.intro
.cname
)
629 w
.add_all
(args
, ", ")
635 redef class IAllocateInstance
636 redef fun compile_to_c
(v
)
638 v
.add_location
(location
)
639 var w
= new_result
(v
)
641 w
.add
(stype
.local_class
.cname
)
646 redef class ICheckInstance
647 redef fun compile_to_c
(v
)
649 v
.add_location
(location
)
650 var w
= new_result
(v
)
652 w
.add
(stype
.local_class
.cname
)
654 w
.add
(v
.register
(expr
))
659 redef class IInitAttributes
660 redef fun compile_to_c
(v
)
662 v
.add_location
(location
)
664 w
.add
("INIT_ATTRIBUTES__")
665 w
.add
(stype
.local_class
.cname
)
667 w
.add
(v
.register
(expr
))
672 redef class IStaticCall
673 redef fun compile_call_to_c
(v
, args
)
676 if prop
.global
.is_init
then args
.add
("init_table")
678 w
.add
(property
.cname
)
680 w
.add_all
(args
, ", ")
687 redef fun compile_to_c
(v
)
689 v
.add_location
(location
)
690 if method
.is_intern
then
691 compile_intern_method_to_c
(v
)
692 else if not method
.global
.is_init
then
693 compile_extern_method_to_c
(v
)
697 fun compile_extern_method_to_c
(v
: I2CCompilerVisitor)
699 var ename
= "{method.friendly_extern_name(method.local_class)}___out"
701 var sig
= method
.signature
702 assert exprs
.length
== sig
.arity
+ 1
704 var regs
= v
.registers
(exprs
)
706 var args
= new Array[String]
708 for i
in [0..sig
.arity
[ do
711 var s
= "{ename}({args.join(", ")})"
713 if need_result
then s
= s
# sig.return_type.boxtype(s)
714 var w
= new_result
(v
)
718 fun compile_intern_method_to_c
(v
: I2CCompilerVisitor)
720 var sig
= method
.signature
721 assert exprs
.length
== sig
.arity
+ 1
722 var c
= method
.local_class
.name
724 var regs
= v
.registers
(exprs
)
725 var s
: nullable String = null
726 if c
== once
"Int".to_symbol
then
727 if n
== once
"object_id".to_symbol
then
729 else if n
== once
"unary -".to_symbol
then
730 s
= "TAG_Int(-UNTAG_Int({regs[0]}))"
731 else if n
== once
"output".to_symbol
then
732 s
= "printf(\"%ld\\n\
", UNTAG_Int({regs[0]}));"
733 else if n
== once
"ascii".to_symbol
then
734 s
= "TAG_Char(UNTAG_Int({regs[0]}))"
735 else if n
== once
"succ".to_symbol
then
736 s
= "TAG_Int(UNTAG_Int({regs[0]})+1)"
737 else if n
== once
"prec".to_symbol
then
738 s
= "TAG_Int(UNTAG_Int({regs[0]})-1)"
739 else if n
== once
"to_f".to_symbol
then
740 s
= "BOX_Float((float)UNTAG_Int({regs[0]}))"
741 else if n
== once
"+".to_symbol
then
742 s
= "TAG_Int(UNTAG_Int({regs[0]})+UNTAG_Int({regs[1]}))"
743 else if n
== once
"-".to_symbol
then
744 s
= "TAG_Int(UNTAG_Int({regs[0]})-UNTAG_Int({regs[1]}))"
745 else if n
== once
"*".to_symbol
then
746 s
= "TAG_Int(UNTAG_Int({regs[0]})*UNTAG_Int({regs[1]}))"
747 else if n
== once
"/".to_symbol
then
748 s
= "TAG_Int(UNTAG_Int({regs[0]})/UNTAG_Int({regs[1]}))"
749 else if n
== once
"%".to_symbol
then
750 s
= "TAG_Int(UNTAG_Int({regs[0]})%UNTAG_Int({regs[1]}))"
751 else if n
== once
"<".to_symbol
then
752 s
= "TAG_Bool(UNTAG_Int({regs[0]})<UNTAG_Int({regs[1]}))"
753 else if n
== once
">".to_symbol
then
754 s
= "TAG_Bool(UNTAG_Int({regs[0]})>UNTAG_Int({regs[1]}))"
755 else if n
== once
"<=".to_symbol
then
756 s
= "TAG_Bool(UNTAG_Int({regs[0]})<=UNTAG_Int({regs[1]}))"
757 else if n
== once
">=".to_symbol
then
758 s
= "TAG_Bool(UNTAG_Int({regs[0]})>=UNTAG_Int({regs[1]}))"
759 else if n
== once
"lshift".to_symbol
then
760 s
= "TAG_Int(UNTAG_Int({regs[0]})<<UNTAG_Int({regs[1]}))"
761 else if n
== once
"rshift".to_symbol
then
762 s
= "TAG_Int(UNTAG_Int({regs[0]})>>UNTAG_Int({regs[1]}))"
763 else if n
== once
"==".to_symbol
then
764 s
= "TAG_Bool(({regs[0]})==({regs[1]}))"
765 else if n
== once
"!=".to_symbol
then
766 s
= "TAG_Bool(({regs[0]})!=({regs[1]}))"
768 else if c
== once
"Float".to_symbol
then
769 if n
== once
"object_id".to_symbol
then
770 s
= "TAG_Int((bigint)UNBOX_Float({regs[0]}))"
771 else if n
== once
"unary -".to_symbol
then
772 s
= "BOX_Float(-UNBOX_Float({regs[0]}))"
773 else if n
== once
"output".to_symbol
then
774 s
= "printf(\"%f\\n\
", UNBOX_Float({regs[0]}));"
775 else if n
== once
"to_i".to_symbol
then
776 s
= "TAG_Int((bigint)UNBOX_Float({regs[0]}))"
777 else if n
== once
"+".to_symbol
then
778 s
= "BOX_Float(UNBOX_Float({regs[0]})+UNBOX_Float({regs[1]}))"
779 else if n
== once
"-".to_symbol
then
780 s
= "BOX_Float(UNBOX_Float({regs[0]})-UNBOX_Float({regs[1]}))"
781 else if n
== once
"*".to_symbol
then
782 s
= "BOX_Float(UNBOX_Float({regs[0]})*UNBOX_Float({regs[1]}))"
783 else if n
== once
"/".to_symbol
then
784 s
= "BOX_Float(UNBOX_Float({regs[0]})/UNBOX_Float({regs[1]}))"
785 else if n
== once
"<".to_symbol
then
786 s
= "TAG_Bool(UNBOX_Float({regs[0]})<UNBOX_Float({regs[1]}))"
787 else if n
== once
">".to_symbol
then
788 s
= "TAG_Bool(UNBOX_Float({regs[0]})>UNBOX_Float({regs[1]}))"
789 else if n
== once
"<=".to_symbol
then
790 s
= "TAG_Bool(UNBOX_Float({regs[0]})<=UNBOX_Float({regs[1]}))"
791 else if n
== once
">=".to_symbol
then
792 s
= "TAG_Bool(UNBOX_Float({regs[0]})>=UNBOX_Float({regs[1]}))"
794 else if c
== once
"Char".to_symbol
then
795 if n
== once
"object_id".to_symbol
then
796 s
= "TAG_Int(UNTAG_Char({regs[0]}))"
797 else if n
== once
"unary -".to_symbol
then
798 s
= "TAG_Char(-UNTAG_Char({regs[0]}))"
799 else if n
== once
"output".to_symbol
then
800 s
= "printf(\"%c\
", (unsigned char)UNTAG_Char({regs[0]}));"
801 else if n
== once
"ascii".to_symbol
then
802 s
= "TAG_Int((unsigned char)UNTAG_Char({regs[0]}))"
803 else if n
== once
"succ".to_symbol
then
804 s
= "TAG_Char(UNTAG_Char({regs[0]})+1)"
805 else if n
== once
"prec".to_symbol
then
806 s
= "TAG_Char(UNTAG_Char({regs[0]})-1)"
807 else if n
== once
"to_i".to_symbol
then
808 s
= "TAG_Int(UNTAG_Char({regs[0]})-'0')"
809 else if n
== once
"+".to_symbol
then
810 s
= "TAG_Char(UNTAG_Char({regs[0]})+UNTAG_Char({regs[1]}))"
811 else if n
== once
"-".to_symbol
then
812 s
= "TAG_Char(UNTAG_Char({regs[0]})-UNTAG_Char({regs[1]}))"
813 else if n
== once
"*".to_symbol
then
814 s
= "TAG_Char(UNTAG_Char({regs[0]})*UNTAG_Char({regs[1]}))"
815 else if n
== once
"/".to_symbol
then
816 s
= "TAG_Char(UNTAG_Char({regs[0]})/UNTAG_Char({regs[1]}))"
817 else if n
== once
"%".to_symbol
then
818 s
= "TAG_Char(UNTAG_Char({regs[0]})%UNTAG_Char({regs[1]}))"
819 else if n
== once
"<".to_symbol
then
820 s
= "TAG_Bool(UNTAG_Char({regs[0]})<UNTAG_Char({regs[1]}))"
821 else if n
== once
">".to_symbol
then
822 s
= "TAG_Bool(UNTAG_Char({regs[0]})>UNTAG_Char({regs[1]}))"
823 else if n
== once
"<=".to_symbol
then
824 s
= "TAG_Bool(UNTAG_Char({regs[0]})<=UNTAG_Char({regs[1]}))"
825 else if n
== once
">=".to_symbol
then
826 s
= "TAG_Bool(UNTAG_Char({regs[0]})>=UNTAG_Char({regs[1]}))"
827 else if n
== once
"==".to_symbol
then
828 s
= "TAG_Bool(({regs[0]})==({regs[1]}))"
829 else if n
== once
"!=".to_symbol
then
830 s
= "TAG_Bool(({regs[0]})!=({regs[1]}))"
832 else if c
== once
"Bool".to_symbol
then
833 if n
== once
"object_id".to_symbol
then
834 s
= "TAG_Int(UNTAG_Bool({regs[0]}))"
835 else if n
== once
"unary -".to_symbol
then
836 s
= "TAG_Bool(-UNTAG_Bool({regs[0]}))"
837 else if n
== once
"output".to_symbol
then
838 s
= "(void)printf(UNTAG_Bool({regs[0]})?\"true\\n\
":\"false\\n\
");"
839 else if n
== once
"ascii".to_symbol
then
840 s
= "TAG_Bool(UNTAG_Bool({regs[0]}))"
841 else if n
== once
"to_i".to_symbol
then
842 s
= "TAG_Int(UNTAG_Bool({regs[0]}))"
843 else if n
== once
"==".to_symbol
then
844 s
= "TAG_Bool(({regs[0]})==({regs[1]}))"
845 else if n
== once
"!=".to_symbol
then
846 s
= "TAG_Bool(({regs[0]})!=({regs[1]}))"
848 else if c
== once
"NativeArray".to_symbol
then
849 if n
== once
"object_id".to_symbol
then
850 s
= "TAG_Int(((Nit_NativeArray){regs[0]})->object_id)"
851 else if n
== once
"[]".to_symbol
then
852 s
= "((Nit_NativeArray){regs[0]})->val[UNTAG_Int({regs[1]})]"
853 else if n
== once
"[]=".to_symbol
then
854 s
= "((Nit_NativeArray){regs[0]})->val[UNTAG_Int({regs[1]})]={regs[2]}"
855 else if n
== once
"copy_to".to_symbol
then
856 s
= "(void)memcpy(((Nit_NativeArray ){regs[1]})->val, ((Nit_NativeArray){regs[0]})->val, UNTAG_Int({regs[2]})*sizeof(val_t))"
858 else if c
== once
"NativeString".to_symbol
then
859 if n
== once
"object_id".to_symbol
then
860 s
= "TAG_Int(UNBOX_NativeString({regs[0]}))"
861 else if n
== once
"atoi".to_symbol
then
862 s
= "TAG_Int(atoi(UNBOX_NativeString({regs[0]})))"
863 else if n
== once
"[]".to_symbol
then
864 s
= "TAG_Char(UNBOX_NativeString({regs[0]})[UNTAG_Int({regs[1]})])"
865 else if n
== once
"[]=".to_symbol
then
866 s
= "UNBOX_NativeString({regs[0]})[UNTAG_Int({regs[1]})]=UNTAG_Char({regs[2]});"
867 else if n
== once
"copy_to".to_symbol
then
868 s
= "(void)memcpy(UNBOX_NativeString({regs[1]})+UNTAG_Int({regs[4]}), UNBOX_NativeString({regs[0]})+UNTAG_Int({regs[3]}), UNTAG_Int({regs[2]}));"
870 else if n
== once
"object_id".to_symbol
then
871 s
= "TAG_Int((bigint)((obj_t){regs[0]})[1].object_id)"
872 else if n
== once
"sys".to_symbol
then
874 else if n
== once
"is_same_type".to_symbol
then
875 s
= "TAG_Bool((VAL2VFT({regs[0]})==VAL2VFT({regs[1]})))"
876 else if n
== once
"exit".to_symbol
then
877 s
= "exit(UNTAG_Int({regs[1]}));"
878 else if n
== once
"calloc_array".to_symbol
then
879 s
= "NEW_NativeArray(UNTAG_Int({regs[1]}), sizeof(val_t))"
880 else if n
== once
"calloc_string".to_symbol
then
881 s
= "BOX_NativeString((char*)raw_alloc((UNTAG_Int({regs[1]}) * sizeof(char))))"
882 # Add output_class_name native implementation
883 else if n
== once
"output_class_name".to_symbol
then
884 s
= "printf(\"%s\\n\
", VAL2VFT({regs[0]})[2].cname);"
885 # Add class_name implementation
886 else if n
== once
"native_class_name".to_symbol
then
887 s
= "BOX_NativeString(VAL2VFT({regs[0]})[2].cname);"
892 if ll
!= null then v
.add_instr
("fprintf(stderr, \"{ll.to_s}: \
");")
893 v
.add_instr
("fprintf(stderr, \"Fatal error
: unknown
intern method
{method.full_name}.\\n\
");")
894 v
.add_instr
("nit_exit(1);")
897 if result
== null then
898 v
.new_instr
.add
(s
).add
(";\n")
899 else if need_result
then
900 var w
= new_result
(v
)
906 redef class IIntValue
907 redef fun compile_to_c
(v
)
909 v
.add_location
(location
)
910 var w
= new_result
(v
)
911 w
.add
("TAG_Int(").add
(value
.to_s
).add
(")")
915 redef class IBoolValue
916 redef fun compile_to_c
(v
)
918 v
.add_location
(location
)
919 var w
= new_result
(v
)
921 if value
then w
.add
("true") else w
.add
("false")
926 redef class ICharValue
927 redef fun compile_to_c
(v
)
929 v
.add_location
(location
)
930 var w
= new_result
(v
)
931 w
.add
("TAG_Char(").add
(value
).add
(")")
935 redef class IFloatValue
936 redef fun compile_to_c
(v
)
938 v
.add_location
(location
)
939 var w
= new_result
(v
)
940 w
.add
("BOX_Float(").add
(value
).add
(")")
944 redef class IStringValue
945 redef fun compile_to_c
(v
)
947 v
.add_location
(location
)
948 var w
= new_result
(v
)
949 w
.add
("BOX_NativeString(\"").add(value).add("\
")")
954 redef fun compile_to_c
(v
)
956 v
.add_location
(location
)
958 w
.add
("nit_abort(\"")
960 if texts.length > 1 then
968 w.add(module_location.cname)
972 w.add(ll.line_start.to_s)
981 redef fun compile_to_c(v)
983 if not need_result then return
984 var e = v.register(expr)
985 var r = v.register(result.as(not null))
986 if e == r then return
987 v.add_location(location)
996 redef class IAttrRead
997 redef fun compile_to_c(v)
999 if not need_result then return
1000 v.add_location(location)
1001 var w = new_result(v)
1002 w.add(property.global.attr_access)
1004 w.add(v.register(expr))
1009 redef class IAttrIsset
1010 redef fun compile_to_c(v)
1012 if not need_result then return
1013 v.add_location(location)
1014 var w = new_result(v)
1016 w.add(property.global.attr_access)
1018 w.add(v.register(expr))
1019 w.add(")!=NIT_NULL)")
1023 redef class IAttrWrite
1024 redef fun compile_to_c(v)
1026 v.add_location(location)
1028 w.add(property.global.attr_access)
1030 w.add(v.register(expr1))
1032 w.add(v.register(expr2))
1037 redef class ITypeCheck
1038 redef fun compile_to_c(v)
1040 if not need_result then return
1041 # FIXME handle formaltypes
1042 v.add_location(location)
1043 var g = stype.local_class.global
1044 var recv = v.register(expr)
1045 var w = new_result(v)
1047 if expr.stype.is_nullable then
1048 if stype.is_nullable then
1051 w.add("==NIT_NULL) || ")
1052 else if stype.as_nullable == expr.stype then
1054 w.add("!=NIT_NULL)")
1059 w.add("!=NIT_NULL) && ")
1075 redef fun compile_to_c(v)
1077 if not need_result then return
1078 v.add_location(location)
1079 var w = new_result(v)
1081 var t1 = expr1.stype
1082 var t2 = expr2.stype
1083 if t1 isa MMTypeNone then
1084 if t2 isa MMTypeNone then
1087 else if t2.is_nullable then
1088 w.add(v.register(expr2))
1089 w.add("==NIT_NULL)")
1095 else if t1.is_nullable then
1096 if t2 isa MMTypeNone then
1097 w.add(v.register(expr1))
1098 w.add("==NIT_NULL)")
1100 else if t2.is_nullable then
1101 w.add("IS_EQUAL_NN(")
1103 w.add("IS_EQUAL_ON(")
1104 w.add(v.register(expr2))
1106 w.add(v.register(expr1))
1111 if t2 isa MMTypeNone then
1114 else if t2.is_nullable then
1115 w.add("IS_EQUAL_ON(")
1117 w.add("IS_EQUAL_OO(")
1120 w.add(v.register(expr1))
1122 w.add(v.register(expr2))
1128 redef fun compile_to_c(v)
1130 if not need_result then return
1131 v.add_location(location)
1132 var w = new_result(v)
1133 w.add("TAG_Bool(!UNTAG_Bool(")
1134 w.add(v.register(expr))
1140 redef fun compile_to_c(v)
1142 v.add_location(location)
1143 var i = v.new_number
1144 var res = result.as(not null)
1145 if res.stype.is_nullable then
1146 v.add_decl("static val_t once_value_
{i}; static int once_bool_
{i}; /* Once value
*/")
1147 v.add_instr("if (!once_bool_
{i}) \
{")
1149 # Since the value is not nullable, we use the null value to represent the boolean
1150 v.add_decl("static val_t once_value_
{i}; /* Once value
*/")
1151 v.add_instr("if (!once_value_
{i}) \
{")
1154 body.compile_to_c(v)
1155 var e = v.register(res)
1156 v.add_instr("once_value_
{i} = {e};")
1157 v.add_instr("register_static_object
(&once_value_
{i});")
1158 if res.stype.is_nullable then v.add_instr("once_bool_
{i} = true;")
1160 v.add_instr("\
} else {e} = once_value_
{i};")
1161 var w = new_result(v)
1166 redef class IClosCall
1167 redef fun compile_to_c(v: I2CCompilerVisitor)
1169 v.add_location(location)
1171 var args: Array[String]
1173 ivar = "closctx-
>closure_funs
[{v.closures[closure_decl]}]"
1174 args = ["closctx-
>closure_ctx
"]
1176 ivar = "CREG[{v.closures[closure_decl]}]"
1177 args = ["closctx_param
"]
1179 args.append(v.registers(exprs))
1181 var s = "(({v.clostypes[closure_decl]})({ivar}))({args.join(", ")})"
1187 v.add_instr("if ({args.first}->has_broke
) \
{")
1193 v.add_goto(v.iroutine.body)
1199 redef class IHasClos
1200 redef fun compile_to_c(v)
1202 if not need_result then return
1203 v.add_location(location)
1204 var w = new_result(v)
1207 w.add("closctx-
>closure_funs
[")
1208 w.add(v.closures[closure_decl])
1212 w.add(v.closures[closure_decl])
1219 redef class IClosureDef
1220 # Compile the closure as a separate C function in the visitor out_contexts.
1221 # Return a fun_t pointer to the function.
1222 fun compile_closure(v: I2CCompilerVisitor): String
1226 # We are now in a closure
1227 var cfc_old = v.closure
1230 # We are now in a escape boundary
1231 var lls_old = v.local_labels
1232 v.local_labels = new HashSet[ISeq]
1234 # We are now in a new C context
1235 var decl_writer_old = cv.decl_writer
1236 var writer_old = cv.writer
1237 cv.writer = cv.top_writer.sub
1238 cv.decl_writer = cv.header_writer.sub
1240 # Generate the C function
1241 var cname = "OC_{v.basecname}_
{v.new_number}"
1242 var args = compile_signature_to_c(v.visitor, cname, null, "struct stack_frame_t
*closctx
", null)
1243 cv.decl_writer = cv.writer.sub
1245 var s = compile_inside_to_c(v, args)
1247 v.add_instr("return;")
1249 v.add_instr("return {s};")
1255 cv.writer = writer_old
1256 cv.decl_writer = decl_writer_old
1258 v.local_labels = lls_old
1259 return "((fun_t
){cname})"