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 # Things needed by typing.nit to generate intermediate code from AST
18 package icode_generation
23 private import primitive_info
25 # An AST2ICode context stores the currently built icode informations
28 redef fun stmt
(s
: ICode)
30 if _current_node
!= null then
31 current_location
= _current_node
.location
32 else if visitor
.current_node
!= null then
33 current_location
= visitor
.current_node
.location
38 # Prepare a new array of length item
39 fun add_new_array
(stype
: MMType, length
: Int): IRegister
41 var prop
= visitor
.get_method
(stype
, once
"with_capacity".to_symbol
)
42 var ni
= expr
(new IIntValue(length
.to_s
), visitor
.type_int
)
43 return expr
(new INew(stype
, prop
, [ni
]), stype
)
47 fun add_call_array_add
(recv
, item
: IRegister)
49 var stype
= recv
.stype
50 var prop
= visitor
.get_method
(stype
, once
"add".to_symbol
)
51 stmt
(new ICall(prop
, [recv
, item
]))
54 # Get the iregister associated with a variable
55 # Or assign one if none exists
56 fun variable
(v
: Variable): IRegister
58 if _variables
.has_key
(v
) then
61 var reg
= new_register
(v
.stype
.as(not null))
67 # Current registered variable
68 var _variables
: HashMap[Variable, IRegister] = new HashMap[Variable, IRegister]
70 # Current registered closurevariables
71 readable var _closurevariables
: HashMap[ClosureVariable, IClosureDecl] = new HashMap[ClosureVariable, IClosureDecl]
73 # The current syntax visitor
74 readable var _visitor
: AbsSyntaxVisitor
76 # Where a nit return must branch
77 readable writable var _return_seq
: nullable ISeq
79 # Register where a functionnal nit return must store its value
80 readable writable var _return_value
: nullable IRegister
82 # The method associated to the iroutine (if any)
83 readable var _method
: nullable MMMethod
85 init(visitor
: AbsSyntaxVisitor, r
: IRoutine, m
: nullable MMMethod)
87 super(visitor
.mmmodule
, r
)
90 _return_value
= r
.result
94 # Insert implicit super init calls
95 fun invoke_super_init_calls_after
(start_prop
: nullable MMMethod)
98 assert p
isa MMSrcMethod
100 assert n
isa AConcreteInitPropdef
102 if n
.super_init_calls
.is_empty
then return
105 if start_prop
!= null then
106 while n
.super_init_calls
[i
] != start_prop
do
111 while n
.explicit_super_init_calls
[j
] != start_prop
do
116 var stop_prop
: nullable MMMethod = null
117 if j
< n
.explicit_super_init_calls
.length
then
118 stop_prop
= n
.explicit_super_init_calls
[j
]
120 var l
= n
.super_init_calls
.length
122 var sp
= n
.super_init_calls
[i
]
123 if sp
== stop_prop
then break
124 var cargs
= new Array[IRegister]
125 if sp
.signature
.arity
== 0 then
126 cargs
.add
(iroutine
.params
.first
)
128 for va
in iroutine
.params
do
132 stmt
(new ICall(sp
, cargs
))
138 var _current_node
: nullable AExpr = null
140 # Generate icode in the current sequence from a statement
141 fun generate_stmt
(n
: nullable AExpr)
143 if n
== null then return
144 var old
= _current_node
146 n
.generate_icode
(self)
150 # Generate icode in the current sequence from an expression
151 fun generate_expr
(n
: AExpr): IRegister
153 var old
= _current_node
155 var reg
= n
.generate_icode
(self).as(not null)
161 redef class EscapableBlock
162 # Where a nit break must branch
163 readable writable var _break_seq
: nullable ISeq
165 # Where a nit continue must branch
166 readable writable var _continue_seq
: nullable ISeq
168 # Register where a functionnal nit break must store its value
169 readable writable var _break_value
: nullable IRegister
171 # Register where a functionnal nit continue must store its value
172 readable writable var _continue_value
: nullable IRegister
175 redef class MMSrcModule
176 # Generate icode for method bodies
177 fun generate_icode
(tc
: ToolContext)
179 var v
= new A2IVisitor(tc
, self)
180 for c
in src_local_classes
do
181 for p
in c
.src_local_properties
do
182 if p
isa MMSrcMethod then
183 p
.generate_iroutine
(v
)
184 else if p
isa MMSrcAttribute then
185 p
.generate_iroutine
(v
)
192 redef class MMSrcAttribute
193 redef readable writable var _iroutine
: nullable IRoutine
195 # Generate the initialization iroutine
196 fun generate_iroutine
(visitor
: A2IVisitor)
198 if node
.n_expr
!= null then
199 var iroutine
= signature
.generate_empty_iroutine
200 iroutine
.location
= node
.location
201 var v
= new A2IContext(visitor
, iroutine
, null)
202 visitor
.icode_ctx
= v
203 visitor
.enter_visit
(node
)
204 visitor
.icode_ctx
= null
210 redef class MMSrcMethod
211 redef readable writable var _iroutine
: nullable IRoutine
213 # Generate the body iroutine
214 fun generate_iroutine
(visitor
: A2IVisitor)
216 var iroutine
= signature
.generate_empty_iroutine
218 iroutine
.location
= node
.location
220 var v
= new A2IContext(visitor
, iroutine
, self)
221 visitor
.icode_ctx
= v
222 inner_generate_iroutine
(v
)
223 visitor
.icode_ctx
= null
227 # Generate the body iroutine (specific part)
228 fun inner_generate_iroutine
(v
: A2IContext) is abstract
231 redef class MMReadImplementationMethod
232 redef fun inner_generate_iroutine
(v
)
234 var e
= v
.add_attr_read
(node
.prop
, v
.iroutine
.params
.first
)
235 v
.add_return_value
(e
)
239 redef class MMWriteImplementationMethod
240 redef fun inner_generate_iroutine
(v
)
242 var params
= v
.iroutine
.params
243 v
.stmt
(new IAttrWrite(node
.prop
, params
[0], params
[1]))
247 redef class MMMethSrcMethod
248 redef fun inner_generate_iroutine
(v
)
250 v
.visitor
.enter_visit
(node
)
254 redef class MMImplicitInit
255 redef fun inner_generate_iroutine
(v
)
257 var params
= v
.iroutine
.params
258 var f
= params
.length
- unassigned_attributes
.length
259 var recv
= params
.first
260 for sp
in super_inits
do
261 assert sp
isa MMMethod
262 var args_recv
= [recv
]
263 if sp
== super_init
then
264 var args
= new Array[IRegister].with_capacity
(f
)
269 v
.stmt
(new ICall(sp
, args
))
271 v
.stmt
(new ICall(sp
, args_recv
))
274 for i
in [f
..params
.length
[ do
275 var attribute
= unassigned_attributes
[i-f
]
276 v
.stmt
(new IAttrWrite(attribute
, recv
, params
[i
]))
282 super AbsSyntaxVisitor
283 writable var _icode_ctx
: nullable A2IContext
284 fun icode_ctx
: A2IContext do return _icode_ctx
.as(not null)
285 redef fun visit
(n
) do n
.accept_icode_generation
(self)
290 ###############################################################################
293 fun accept_icode_generation
(v
: A2IVisitor) do accept_abs_syntax_visitor
(v
) end
296 redef class AAttrPropdef
297 redef fun accept_icode_generation
(vv
)
300 v
.stmt
(new IMove(v
.variable
(self_var
), v
.iroutine
.params
.first
))
304 v
.stmt
(new IMove(v
.iroutine
.result
.as(not null), v
.generate_expr
(ne
)))
309 redef class AMethPropdef
310 redef fun accept_icode_generation
(vv
)
313 fill_iroutine
(vv
.icode_ctx
, method
)
316 # Compile the method body common preambule (before specific body stuff if any)
317 fun fill_iroutine
(v
: A2IContext, method
: MMSrcMethod) is abstract
320 redef class ASignature
321 fun fill_iroutine_parameters
(v
: A2IContext, orig_sig
: MMSignature, params
: Sequence[IRegister], closdecls
: nullable Sequence[IClosureDecl])
323 for ap
in n_params
do
324 var reg
= v
.variable
(ap
.variable
)
325 var orig_type
= orig_sig
[ap
.position
]
326 var apst
= ap
.variable
.stype
.as(not null)
327 if not orig_type
< apst
then
328 v
.add_type_cast
(params
[ap
.position
], apst
)
330 v
.stmt
(new IMove(reg
, params
[ap
.position
]))
332 for i
in [0..n_closure_decls
.length
[ do
333 var wd
= n_closure_decls
[i
]
334 v
.closurevariables
[wd
.variable
] = closdecls
[i
]
339 redef class AClosureDecl
340 redef fun accept_icode_generation
(vv
)
343 var iclos
= variable
.closure
.signature
.generate_empty_iclosuredef
(v
)
346 escapable
.continue_seq
= iclos
.body
347 escapable
.continue_value
= iclos
.result
348 escapable
.break_seq
= v
.return_seq
349 escapable
.break_value
= v
.return_value
350 n_signature
.fill_iroutine_parameters
(v
, variable
.closure
.signature
, iclos
.params
, null)
352 if n_expr
!= null then
353 v
.generate_stmt
(n_expr
)
354 v
.iroutine
.closure_decls
[position
].default
= iclos
356 # Add a final break in case of break block witout value
357 if variable
.closure
.is_break
and v
.return_value
== null then
358 v
.add_escape
(v
.return_seq
.as(not null))
365 redef class AConcreteMethPropdef
366 redef fun fill_iroutine
(v
, method
)
368 var params
= v
.iroutine
.params
.to_a
369 var selfreg
= v
.variable
(self_var
)
370 v
.stmt
(new IMove(selfreg
, params
[0]))
373 var orig_meth
: MMLocalProperty = method
.global
.intro
374 var orig_sig
= orig_meth
.signature_for
(method
.signature
.recv
)
375 if n_signature
!= null then
376 n_signature
.fill_iroutine_parameters
(v
, orig_sig
, params
, v
.iroutine
.closure_decls
)
379 if self isa AConcreteInitPropdef then
380 v
.invoke_super_init_calls_after
(null)
383 if n_block
!= null then
384 v
.generate_stmt
(n_block
)
389 redef class ADeferredMethPropdef
390 redef fun fill_iroutine
(v
, method
)
392 v
.add_abort
("Deferred method called")
396 redef class AExternMethPropdef
397 redef fun fill_iroutine
(v
, method
)
399 var params
= v
.iroutine
.params
400 var rtype
= method
.signature
.return_type
401 if rtype
!= null then
402 v
.add_return_value
(v
.expr
(new INative(method
, params
), rtype
))
404 v
.stmt
(new INative(method
, params
))
409 redef class AInternMethPropdef
410 redef fun fill_iroutine
(v
, method
)
412 var params
= v
.iroutine
.params
413 var rtype
= method
.signature
.return_type
414 if rtype
!= null then
415 v
.add_return_value
(v
.expr
(new INative(method
, params
), rtype
))
417 v
.stmt
(new INative(method
, params
))
422 ###############################################################################
425 redef fun accept_icode_generation
(v
) do end
427 # Generate icode sequence in the current A2IContext
428 # This method should not be called direclty: use generate_expr and generate_stmt from A2IContext instead
429 protected fun generate_icode
(v
: A2IContext): nullable IRegister is abstract
432 redef class AVardeclExpr
433 redef fun generate_icode
(v
)
435 var reg
= v
.variable
(variable
)
438 v
.add_assignment
(reg
, v
.generate_expr
(ne
))
444 redef class ABlockExpr
445 redef fun generate_icode
(v
)
447 for ne
in n_expr
do v
.generate_stmt
(ne
)
453 redef fun generate_icode
(v
)
458 escapable
.break_seq
= seq
461 v
.generate_stmt
(n_block
)
468 redef class AReturnExpr
469 redef fun generate_icode
(v
)
473 v
.add_assignment
(v
.return_value
.as(not null), v
.generate_expr
(ne
))
475 v
.add_escape
(v
.return_seq
.as(not null))
480 redef class ABreakExpr
481 redef fun generate_icode
(v
)
485 v
.add_assignment
(escapable
.break_value
.as(not null), v
.generate_expr
(ne
))
487 v
.add_escape
(escapable
.break_seq
.as(not null))
492 redef class AContinueExpr
493 redef fun generate_icode
(v
)
497 v
.add_assignment
(escapable
.continue_value
.as(not null), v
.generate_expr
(ne
))
499 v
.add_escape
(escapable
.continue_seq
.as(not null))
504 redef class AAbortExpr
505 redef fun generate_icode
(v
)
507 v
.add_abort
("Aborted")
513 redef fun generate_icode
(v
)
515 var iif
= new IIf(v
.generate_expr
(n_expr
))
519 if n_then
!= null then
521 v
.generate_stmt
(n_then
)
524 if n_else
!= null then
526 v
.generate_stmt
(n_else
)
534 redef class AWhileExpr
535 redef fun generate_icode
(v
)
538 var iloop
= new ILoop
540 escapable
.break_seq
= iloop
544 var iif
= new IIf(v
.generate_expr
(n_expr
))
547 # Process inside (condition is true)
548 if n_block
!= null then
550 escapable
.continue_seq
= iif
.then_seq
551 v
.generate_stmt
(n_block
)
554 # Process escape (condition is false)
563 redef class ALoopExpr
564 redef fun generate_icode
(v
)
567 var iloop
= new ILoop
569 escapable
.break_seq
= iloop
573 if n_block
!= null then
577 escapable
.continue_seq
= seq
578 v
.generate_stmt
(n_block
)
587 redef fun generate_icode
(v
)
590 var expr_type
= ne
.stype
591 var tint
= v
.visitor
.type_int
592 var meth
# The method that call the closure
593 var args
# The arguments of meth
595 if ne
isa ARangeExpr and expr_type
== v
.visitor
.type_range
(tint
) then
596 # Shortcut. No Range[Int] object allocated.
597 # 'for x in [y..z] do' become 'y.enumerate_to(z) !each(x) do'
598 # 'for x in [y..z[ do' become 'y.enumerate_before(z) !each(x) do'
599 # And both methods may be inlined
600 args
= [v
.generate_expr
(ne
.n_expr
), v
.generate_expr
(ne
.n_expr2
)]
601 if ne
isa ACrangeExpr then
602 meth
= v
.visitor
.get_method
(tint
, once
"enumerate_to".to_symbol
)
604 assert ne
isa AOrangeExpr
605 meth
= v
.visitor
.get_method
(tint
, once
"enumerate_before".to_symbol
)
609 # 'for x in e do' become 'e.iterate !each(x) do'
610 # Some iterate methods may be inlined (eg. the Array one)
611 meth
= v
.visitor
.get_method
(expr_type
, once
"iterate".to_symbol
)
612 args
= [v
.generate_expr
(n_expr
)]
616 var iclos
= meth
.signature
.closures
.first
.signature
.generate_empty_iclosuredef
(v
)
622 escapable
.break_seq
= seq
623 escapable
.break_value
= null
626 escapable
.continue_seq
= iclos
.body
627 escapable
.continue_value
= null
628 v
.stmt
(new IMove(v
.variable
(variable
), iclos
.params
.first
))
629 v
.generate_stmt
(n_block
)
633 v
.add_call
(meth
, args
, [iclos
])
640 redef class AAssertExpr
641 redef fun generate_icode
(v
)
643 var e
= v
.generate_expr
(n_expr
)
648 v
.generate_stmt
(n_else
)
651 v
.add_abort
("Assert failed")
653 v
.add_abort
("Assert %s failed", id
.to_s
)
661 redef fun generate_icode
(v
)
663 return v
.variable
(variable
)
667 redef class AVarAssignExpr
668 redef fun generate_icode
(v
)
670 var e
= v
.generate_expr
(n_value
)
671 v
.add_assignment
(v
.variable
(variable
), e
)
676 redef class AVarReassignExpr
677 redef fun generate_icode
(v
)
679 var e1
= v
.variable
(variable
)
680 var e2
= v
.generate_expr
(n_value
)
681 var e3
= v
.expr
(new ICall(assign_method
, [e1
, e2
]), assign_method
.signature
.return_type
.as(not null))
682 v
.add_assignment
(e1
, e3
)
687 redef class ASelfExpr
688 redef fun generate_icode
(v
)
690 return v
.variable
(variable
)
694 redef class AIfexprExpr
695 redef fun generate_icode
(v
)
698 var iif
= new IIf(v
.generate_expr
(n_expr
))
703 var reg
= v
.new_register
(stype
)
707 v
.add_assignment
(reg
, v
.generate_expr
(n_then
))
711 v
.add_assignment
(reg
, v
.generate_expr
(n_else
))
719 redef fun generate_icode
(v
)
721 var e
= v
.generate_expr
(n_expr
)
722 var e2
= v
.generate_expr
(n_expr2
)
723 return v
.expr
(new IIs(e
, e2
), stype
)
728 redef fun generate_icode
(v
)
731 var reg
= v
.new_register
(stype
)
733 # Process left operand (in a if/then)
734 var iif
= new IIf(v
.generate_expr
(n_expr
))
738 v
.add_assignment
(reg
, v
.lit_true_reg
)
740 # Process right operand (in the else)
742 v
.add_assignment
(reg
, v
.generate_expr
(n_expr2
))
750 redef fun generate_icode
(v
)
753 var reg
= v
.new_register
(stype
)
755 # Process left operand (in a if/else)
756 var iif
= new IIf(v
.generate_expr
(n_expr
))
760 v
.add_assignment
(reg
, v
.lit_false_reg
)
762 # Process right operand (in the then)
764 v
.add_assignment
(reg
, v
.generate_expr
(n_expr2
))
772 redef fun generate_icode
(v
)
774 var e
= v
.generate_expr
(n_expr
)
775 return v
.expr
(new INot(e
), stype
)
779 redef class AOrElseExpr
780 redef fun generate_icode
(v
)
782 # Compute left operand
783 var e
= v
.generate_expr
(n_expr
)
786 var reg
= v
.new_register
(stype
)
788 # Compare left and null
789 var n
= v
.lit_null_reg
790 var c
= v
.expr
(new IIs(e
, n
), v
.mmmodule
.type_bool
)
795 # if equal, result = right opr
797 v
.add_assignment
(reg
, v
.generate_expr
(n_expr2
))
799 # else, result = left operand
801 v
.add_assignment
(reg
, e
)
810 redef fun generate_icode
(v
)
812 var e
= v
.generate_expr
(n_expr
)
813 return v
.expr
(new ITypeCheck(e
, n_type
.stype
), stype
)
817 redef class AAsCastExpr
818 redef fun generate_icode
(v
)
820 var e
= v
.generate_expr
(n_expr
)
821 v
.add_type_cast
(e
, stype
)
826 redef class AAsNotnullExpr
827 redef fun generate_icode
(v
)
829 var e
= v
.generate_expr
(n_expr
)
830 v
.add_type_cast
(e
, stype
)
835 redef class ATrueExpr
836 redef fun generate_icode
(v
)
838 return v
.lit_true_reg
842 redef class AFalseExpr
843 redef fun generate_icode
(v
)
845 return v
.lit_false_reg
850 redef fun generate_icode
(v
)
852 return v
.expr
(new IIntValue(n_number
.text
), stype
)
856 redef class AFloatExpr
857 redef fun generate_icode
(v
)
859 return v
.expr
(new IFloatValue(n_float
.text
), stype
)
863 redef class ACharExpr
864 redef fun generate_icode
(v
)
866 return v
.expr
(new ICharValue(n_char
.text
), stype
)
870 redef class AStringFormExpr
871 redef fun generate_icode
(v
)
875 var ionce
= new IOnce
876 var reg
= v
.expr
(ionce
, stype
)
878 var ns
= v
.expr
(new IStringValue(_cstring
.as(not null)), v
.visitor
.type_nativestring
)
879 var ni
= v
.expr
(new IIntValue(_cstring_length
.to_s
), v
.visitor
.type_int
)
880 var prop
= v
.visitor
.get_method
(stype
, once
"with_native".to_symbol
)
881 var e
= v
.expr
(new INew(stype
, prop
, [ns
, ni
]), stype
)
882 v
.add_assignment
(reg
, e
)
887 # The raw string value
888 protected fun string_text
: String is abstract
890 # The string in a C native format
891 protected var _cstring
: nullable String
893 # The string length in bytes
894 protected var _cstring_length
: nullable Int
896 # Compute _cstring and _cstring_length using string_text
897 protected fun compute_string_infos
900 var str
= string_text
903 while i
< str
.length
do
908 if c2
!= '{' and c2 != '}' then
918 _cstring_length
= len
922 redef class AStringExpr
923 redef fun string_text
do return n_string
.text
.substring
(1, n_string
.text
.length
- 2)
925 redef class AStartStringExpr
926 redef fun string_text
do return n_string
.text
.substring
(1, n_string
.text
.length
- 2)
928 redef class AMidStringExpr
929 redef fun string_text
do return n_string
.text
.substring
(1, n_string
.text
.length
- 2)
931 redef class AEndStringExpr
932 redef fun string_text
do return n_string
.text
.substring
(1, n_string
.text
.length
- 2)
935 redef class ASuperstringExpr
936 redef fun generate_icode
(v
)
938 var array
= v
.add_new_array
(atype
, n_exprs
.length
)
939 var prop_to_s
= v
.visitor
.get_method
(v
.visitor
.type_object
, once
"to_s".to_symbol
)
941 var e
= v
.generate_expr
(ne
)
942 if ne
.stype
!= stype
then
943 e
= v
.expr
(new ICall(prop_to_s
, [e
]), stype
)
945 v
.add_call_array_add
(array
, e
)
947 return v
.expr
(new ICall(prop_to_s
, [array
]), stype
)
951 redef class ANullExpr
952 redef fun generate_icode
(v
)
954 return v
.lit_null_reg
958 redef class AArrayExpr
959 redef fun generate_icode
(v
)
961 var recv
= v
.add_new_array
(stype
, n_exprs
.length
)
963 var e
= v
.generate_expr
(ne
)
964 v
.add_call_array_add
(recv
, e
)
970 redef class ACrangeExpr
971 redef fun generate_icode
(v
)
973 var e
= v
.generate_expr
(n_expr
)
974 var e2
= v
.generate_expr
(n_expr2
)
975 var prop
= v
.visitor
.get_method
(stype
, once
"init".to_symbol
)
976 return v
.expr
(new INew(stype
, prop
, [e
, e2
]), stype
)
980 redef class AOrangeExpr
981 redef fun generate_icode
(v
)
983 var e
= v
.generate_expr
(n_expr
)
984 var e2
= v
.generate_expr
(n_expr2
)
985 var prop
= v
.visitor
.get_method
(stype
, once
"without_last".to_symbol
)
986 return v
.expr
(new INew(stype
, prop
, [e
, e2
]), stype
)
990 redef class ASuperExpr
991 redef fun generate_icode
(v
)
993 var arity
= v
.iroutine
.params
.length
- 1
994 if init_in_superclass
!= null then
995 arity
= init_in_superclass
.signature
.arity
997 var args
= new Array[IRegister].with_capacity
(arity
+ 1)
998 args
.add
(v
.iroutine
.params
[0])
999 if n_args
.length
!= arity
then
1000 for i
in [0..arity
[ do
1001 args
.add
(v
.iroutine
.params
[i
+ 1])
1005 args
.add
(v
.generate_expr
(na
))
1008 var p
= init_in_superclass
1010 var rtype
= p
.signature
.return_type
1011 if rtype
!= null then
1012 return v
.expr
(new ICall(p
, args
), rtype
)
1014 v
.stmt
(new ICall(p
, args
))
1019 var rtype
= p
.signature
.return_type
1020 if rtype
== null then
1021 v
.stmt
(new ISuper(p
, args
))
1024 return v
.expr
(new ISuper(p
, args
), rtype
)
1030 redef class AAttrExpr
1031 redef fun generate_icode
(v
)
1033 var e
= v
.generate_expr
(n_expr
)
1034 if n_expr
.stype
.is_nullable
then v
.add_null_reciever_check
(e
)
1035 return v
.add_attr_read
(prop
, e
)
1039 redef class AAttrAssignExpr
1040 redef fun generate_icode
(v
)
1042 var e
= v
.generate_expr
(n_expr
)
1043 if n_expr
.stype
.is_nullable
then v
.add_null_reciever_check
(e
)
1044 var e2
= v
.generate_expr
(n_value
)
1045 v
.stmt
(new IAttrWrite(prop
, e
, e2
))
1049 redef class AAttrReassignExpr
1050 redef fun generate_icode
(v
)
1052 var e1
= v
.generate_expr
(n_expr
)
1053 if n_expr
.stype
.is_nullable
then v
.add_null_reciever_check
(e1
)
1054 var e2
= v
.expr
(new IAttrRead(prop
, e1
), attr_type
)
1055 var e3
= v
.generate_expr
(n_value
)
1056 var e4
= v
.expr
(new ICall(assign_method
, [e2
, e3
]), attr_type
)
1057 v
.stmt
(new IAttrWrite(prop
, e1
, e4
))
1062 redef class AIssetAttrExpr
1063 redef fun generate_icode
(v
)
1065 var e
= v
.generate_expr
(n_expr
)
1066 if n_expr
.stype
.is_nullable
then v
.add_null_reciever_check
(e
)
1067 return v
.expr
(new IAttrIsset(prop
, e
), stype
)
1071 redef class AAbsAbsSendExpr
1072 # Compile each argument and add them to the array
1073 fun generate_icode_for_arguments_in
(v
: A2IContext, args
: Array[IRegister], signature
: MMSignature)
1075 var par_arity
= signature
.arity
1076 var par_vararg
= signature
.vararg_rank
1077 var raw_args
= raw_arguments
1078 var raw_arity
= raw_args
.length
1080 for par_idx
in [0..par_arity
[ do
1082 var par_type
= signature
[par_idx
]
1083 if par_idx
== par_vararg
then
1084 var arr
= v
.add_new_array
(v
.visitor
.type_array
(par_type
), raw_arity-par_arity
)
1085 for i
in [0..(raw_arity-par_arity
)] do
1086 a
= raw_args
[arg_idx
]
1087 v
.add_call_array_add
(arr
, v
.generate_expr
(a
))
1088 arg_idx
= arg_idx
+ 1
1092 a
= raw_args
[arg_idx
]
1093 args
.add
(v
.generate_expr
(a
))
1094 arg_idx
= arg_idx
+ 1
1100 redef class ASendExpr
1101 redef fun generate_icode
(v
)
1103 var recv
= v
.generate_expr
(n_expr
)
1104 var args
= new Array[IRegister]
1107 generate_icode_for_arguments_in
(v
, args
, prop
.signature
.as(not null))
1108 var r
: nullable IRegister = null # The full result of the send (raw call + breaks)
1109 var r2
: nullable IRegister # The raw result of the call
1113 var closcns
: nullable Array[nullable IClosureDef] = null
1114 if not prop_signature
.closures
.is_empty
then
1115 var rtype
= prop_signature
.return_type
1116 if rtype
!= null then
1117 r
= v
.new_register
(rtype
)
1122 closcns
= new Array[nullable IClosureDef]
1124 if closure_defs
!= null then cdarity
= closure_defs
.length
1125 var closure_defs
= closure_defs
1126 for mmc
in prop_signature
.closures
do
1129 if closure_defs
!= null then
1130 for cd
in closure_defs
do
1131 if cd
.n_id
.to_symbol
!= name
then continue
1132 assert found
== false
1134 cd
.escapable
.break_seq
= seq
1135 cd
.escapable
.break_value
= r
1136 var cn
= cd
.generate_iclosuredef
(v
)
1146 r2
= v
.add_call
(prop
, args
, closcns
)
1149 if not prop_signature
.closures
.is_empty
then
1150 if r
!= null and r2
!= null then v
.add_assignment
(r
, r2
)
1156 if prop
.global
.is_init
then
1157 v
.invoke_super_init_calls_after
(prop
)
1163 redef class ASendReassignExpr
1164 redef fun generate_icode
(v
)
1166 var recv
= v
.generate_expr
(n_expr
)
1167 if n_expr
.stype
.is_nullable
then v
.add_null_reciever_check
(recv
)
1168 var args
= new Array[IRegister]
1170 generate_icode_for_arguments_in
(v
, args
, read_prop
.signature
.as(not null))
1172 var e2
= v
.expr
(new ICall(read_prop
, args
), read_prop
.signature
.return_type
.as(not null))
1173 var e3
= v
.generate_expr
(n_value
)
1174 var e4
= v
.expr
(new ICall(assign_method
, [e2
, e3
]), assign_method
.signature
.return_type
.as(not null))
1175 var args2
= args
.to_a
1177 v
.stmt
(new ICall(prop
, args2
))
1182 redef class ANewExpr
1183 redef fun generate_icode
(v
)
1185 var args
= new Array[IRegister]
1186 generate_icode_for_arguments_in
(v
, args
, prop
.signature
.as(not null))
1187 return v
.expr
(new INew(stype
, prop
, args
), stype
)
1191 redef class AProxyExpr
1192 redef fun generate_icode
(v
)
1194 return v
.generate_expr
(n_expr
)
1198 redef class AOnceExpr
1199 redef fun generate_icode
(v
)
1201 var ionce
= new IOnce
1202 var reg
= v
.expr
(ionce
, stype
)
1206 var e
= v
.generate_expr
(n_expr
)
1207 v
.add_assignment
(reg
, e
)
1215 redef class AClosureDef
1216 var _iclosure_def
: nullable IClosureDef
1218 fun generate_iclosuredef
(v
: A2IContext): IClosureDef
1221 var args
= new Array[IRegister]
1222 var sig
= closure
.signature
1223 for i
in [0..sig
.arity
[ do
1224 args
.add
(v
.new_register
(sig
[i
]))
1226 var ret
: nullable IRegister = null
1227 var rtype
= sig
.return_type
1228 if rtype
!= null then
1229 ret
= v
.new_register
(rtype
)
1232 var iclos
= new IClosureDef(args
, ret
)
1233 iclos
.location
= location
1238 escapable
.continue_seq
= iclos
.body
1239 escapable
.continue_value
= iclos
.result
1242 for i
in [0..variables
.length
[ do
1243 var res
= v
.variable
(variables
[i
])
1244 v
.add_assignment
(res
, iclos
.params
[i
])
1247 v
.generate_stmt
(n_expr
)
1249 # Add a final break in case of break block witout value
1250 if closure
.is_break
and escapable
.break_value
== null then
1251 v
.add_escape
(escapable
.break_seq
.as(not null))
1255 _iclosure_def
= iclos
1260 redef class AClosureCallExpr
1261 redef fun generate_icode
(v
)
1264 var args
= new Array[IRegister]
1265 generate_icode_for_arguments_in
(v
, args
, variable
.closure
.signature
)
1268 var closdecl
= v
.closurevariables
[variable
]
1269 var icall
= new IClosCall(closdecl
, args
)
1272 # Fill break of ical
1273 if n_closure_defs
.length
== 1 then do
1275 icall
.break_seq
= iseq
1277 v
.generate_stmt
(n_closure_defs
.first
.n_expr
)
1281 # Prepare in case of default block
1282 var iif
: nullable IIf = null # The iif of default block
1283 var closdecl_default
= closdecl
.default
# The default (if any)
1284 if closdecl_default
!= null then
1285 iif
= new IIf(v
.expr
(new IHasClos(closdecl
), v
.visitor
.type_bool
))
1287 v
.seq
= iif
.then_seq
1291 var r2
: nullable IRegister = null # the result of the icall
1292 var rtype
= variable
.closure
.signature
.return_type
1293 if rtype
== null then
1296 r2
= v
.expr
(icall
, rtype
)
1299 # Process the case of default block
1300 var r
: nullable IRegister = null # the real result
1301 if closdecl_default
!= null then
1304 assert rtype
!= null
1305 r
= v
.new_register
(rtype
)
1306 v
.add_assignment
(r
, r2
)
1308 v
.seq
= iif
.else_seq
1309 var r3
= v
.inline_routine
(closdecl_default
, args
, null)
1312 v
.add_assignment
(r
, r3
)