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 # Analysis property bodies, statements and expressions
22 redef class MMSrcModule
23 # Walk trough the module and type statments and expressions
24 # Require than supermodules are processed
25 meth do_typing
(tc
: ToolContext)
27 var tv
= new TypingVisitor(tc
, self)
33 # * Associate local variables to nodes
34 # * Distinguish method call and local variable access
35 # * Resolve call and attribute access
36 # * Check type conformance
37 private class TypingVisitor
38 special AbsSyntaxVisitor
41 if n
!= null then n
.accept_typing
(self)
44 # Current knowledge about variables names and types
45 readable writable attr _variable_ctx
: VariableContext
47 # Type of the receiver
48 readable writable attr _self_type
: MMType
50 # Block of the current method
51 readable writable attr _top_block
: PExpr
53 # List of explicit invocation of constructors of super-classes
54 readable writable attr _explicit_super_init_calls
: Array[MMMethod]
56 # Is a other constructor of the same class invoked
57 readable writable attr _explicit_other_init_call
: Bool
59 init(tc
, module) do super
61 private meth get_default_constructor_for
(n
: PNode, c
: MMLocalClass, prop
: MMSrcMethod): MMMethod
64 #var prop = v.local_property
65 #assert prop isa MMMethod
66 var candidates
= new Array[MMMethod]
67 var false_candidates
= new Array[MMMethod]
68 var parity
= prop
.signature
.arity
69 for g
in c
.global_properties
do
70 if not g
.is_init
then continue
71 if g
.intro
.local_class
!= c
then continue
73 assert gp
isa MMSrcMethod
74 var garity
= gp
.signature
.arity
75 if prop
!= null and gp
.name
== prop
.name
then
76 if garity
== 0 or (parity
== garity
and prop
.signature
< gp
.signature
) then
79 false_candidates
.add
(gp
)
81 else if garity
== 0 and gp
.name
== once
("init".to_symbol
) then
83 false_candidates
.add
(gp
)
85 false_candidates
.add
(gp
)
88 if candidates
.length
== 1 then
89 return candidates
.first
90 else if candidates
.length
> 0 then
91 v
.error
(n
, "Error: Conflicting default constructor to call for {c}: {candidates.join(", ")}.")
93 else if false_candidates
.length
> 0 then
94 v
.error
(n
, "Error: there is no available compatible constrctor in {c}. discarded candidates are {false_candidates.join(", ")}.")
97 v
.warning
(n
, "Error: there is no available compatible constrctor in {c}.")
103 # Associate symbols to variable and variables to type
105 private class VariableContext
106 # Look for the variable from its name
107 # Return null if nothing found
108 meth
[](s
: Symbol): Variable
110 if _dico
.has_key
(s
) then
117 # Register a new variable with its name
118 meth add
(v
: Variable)
124 # The effective static type of a given variable
125 # May be different from the declaration static type
126 meth stype
(v
: Variable): MMType
131 # Variables by name (in the current context only)
132 attr _dico
: Map[Symbol, Variable]
134 # Build a new VariableContext
135 meth sub
: SubVariableContext
137 return new SubVariableContext.with_prev
(self, null, null)
140 # Build a nested VariableContext with new variable information
141 meth sub_with
(v
: Variable, t
: MMType): SubVariableContext
143 return new SubVariableContext.with_prev
(self, v
, t
)
148 _dico
= new HashMap[Symbol, Variable]
152 private class SubVariableContext
153 special VariableContext
154 readable attr _prev
: VariableContext
155 attr _variable
: Variable
156 attr _var_type
: MMType
160 if _dico
.has_key
(s
) then
169 if _variable
== v
then
175 init with_prev
(p
: VariableContext, v
: Variable, t
: MMType)
185 ###############################################################################
188 private meth accept_typing
(v
: TypingVisitor)
190 accept_abs_syntax_visitor
(v
)
193 private meth after_typing
(v
: TypingVisitor) do end
196 redef class PClassdef
197 redef meth accept_typing
(v
)
199 v
.self_type
= local_class
.get_type
204 redef class AAttrPropdef
205 redef meth accept_typing
(v
)
208 if n_expr
!= null then
209 v
.check_conform_expr
(n_expr
, prop
.signature
.return_type
)
214 redef class AMethPropdef
215 redef meth accept_typing
(v
)
217 v
.variable_ctx
= new VariableContext
222 redef class AConcreteInitPropdef
223 readable attr _super_init_calls
: Array[MMMethod] = new Array[MMMethod]
224 readable attr _explicit_super_init_calls
: Array[MMMethod] = new Array[MMMethod]
225 redef meth accept_typing
(v
)
227 v
.top_block
= n_block
228 v
.explicit_super_init_calls
= explicit_super_init_calls
229 v
.explicit_other_init_call
= false
231 if v
.explicit_other_init_call
then
235 var l
= explicit_super_init_calls
.length
236 var cur_m
: MMMethod = null
237 var cur_c
: MMLocalClass = null
239 cur_m
= explicit_super_init_calls
[i
]
240 cur_c
= cur_m
.global
.intro
.local_class
243 while j
< v
.local_class
.cshe
.direct_greaters
.length
do
244 var c
= v
.local_class
.cshe
.direct_greaters
[j
]
245 if c
.global
.is_interface
or c
.global
.is_universal
then
247 else if cur_c
!= null and c
.cshe
<= cur_c
then
248 if c
== cur_c
then j
+= 1
249 super_init_calls
.add
(cur_m
)
252 cur_m
= explicit_super_init_calls
[i
]
253 cur_c
= cur_m
.global
.intro
.local_class
259 var p
= v
.get_default_constructor_for
(self, c
, method
)
261 super_init_calls
.add
(p
)
271 redef meth after_typing
(v
)
273 if v
.variable_ctx
!= null then
274 v
.variable_ctx
.add
(variable
)
280 readable attr _stype
: MMType
281 redef meth after_typing
(v
)
283 _stype
= get_stype
(v
)
288 redef readable attr _stype
: MMType
290 # Is the expression the implicit receiver
291 meth is_implicit_self
: Bool do return false
293 # Is the expression the current receiver (implicit or explicit)
294 meth is_self
: Bool do return false
296 # Is the expression a variable access
297 meth is_variable
: Bool do return false
299 # The variable type information if current boolean expression is true
300 readable private attr _if_true_variable_ctx
: VariableContext
303 redef class AVardeclExpr
304 redef meth after_typing
(v
)
306 var va
= new VarVariable(n_id
.to_symbol
, self)
308 v
.variable_ctx
.add
(va
)
310 if n_type
!= null then
311 va
.stype
= n_type
.stype
312 if n_expr
!= null then
313 v
.check_conform_expr
(n_expr
, va
.stype
)
317 va
.stype
= n_expr
.stype
322 redef class ABlockExpr
323 redef meth accept_typing
(v
)
325 var old_var_ctx
= v
.variable_ctx
326 v
.variable_ctx
= v
.variable_ctx
.sub
330 v
.variable_ctx
= old_var_ctx
334 redef class AReturnExpr
335 redef meth after_typing
(v
)
337 var t
= v
.local_property
.signature
.return_type
338 if n_expr
== null and t
!= null then
339 v
.error
(self, "Error: Return without value in a function.")
340 else if n_expr
!= null and t
== null then
341 v
.error
(self, "Error: Return with value in a procedure.")
342 else if n_expr
!= null and t
!= null then
343 v
.check_conform_expr
(n_expr
, t
)
349 redef meth accept_typing
(v
)
351 var old_var_ctx
= v
.variable_ctx
353 v
.check_conform_expr
(n_expr
, v
.type_bool
)
355 if n_expr
.if_true_variable_ctx
!= null then
356 v
.variable_ctx
= n_expr
.if_true_variable_ctx
360 # Restore variable ctx
361 v
.variable_ctx
= old_var_ctx
363 if n_else
!= null then
365 v
.variable_ctx
= old_var_ctx
370 redef class AWhileExpr
371 redef meth after_typing
(v
)
373 v
.check_conform_expr
(n_expr
, v
.type_bool
)
378 redef meth after_typing
(v
)
380 # pop context created in AForVardeclExpr
381 var varctx
= v
.variable_ctx
382 assert varctx
isa SubVariableContext
383 v
.variable_ctx
= varctx
.prev
387 redef class AForVardeclExpr
388 redef meth after_typing
(v
)
390 v
.variable_ctx
= v
.variable_ctx
.sub
391 var va
= new AutoVariable(n_id
.to_symbol
, self)
393 v
.variable_ctx
.add
(va
)
395 var expr_type
= n_expr
.stype
396 if not v
.check_conform_expr
(n_expr
, v
.type_collection
) then
399 var prop
= expr_type
.local_class
.select_method
(once
("iterator".to_symbol
))
401 v
.error
(self, "Error: Collection MUST have an iterate method")
404 var iter_type
= prop
.signature_for
(expr_type
).return_type
405 var prop2
= iter_type
.local_class
.select_method
(once
("item".to_symbol
))
406 if prop2
== null then
407 v
.error
(self, "Error: {iter_type} MUST have an item method")
410 var t
= prop2
.signature_for
(iter_type
).return_type
411 if not n_expr
.is_self
then t
= t
.not_for_self
416 redef class AAssertExpr
417 redef meth after_typing
(v
)
419 v
.check_conform_expr
(n_expr
, v
.type_bool
)
420 if n_expr
.if_true_variable_ctx
!= null then v
.variable_ctx
= n_expr
.if_true_variable_ctx
425 redef meth is_variable
do return true
427 redef meth after_typing
(v
)
429 _stype
= v
.variable_ctx
.stype
(variable
)
433 redef class AVarAssignExpr
434 redef meth after_typing
(v
)
436 var t
= v
.variable_ctx
.stype
(variable
)
437 v
.check_conform_expr
(n_value
, t
)
441 redef class AReassignFormExpr
442 # Compute and check method used through the reassigment operator
443 private meth do_lvalue_typing
(v
: TypingVisitor, type_lvalue
: MMType)
445 if type_lvalue
== null then
448 var name
= n_assign_op
.method_name
449 var prop
= type_lvalue
.local_class
.select_method
(name
)
451 v
.error
(self, "Error: Method '{name}' doesn't exists in {type_lvalue}.")
454 prop
.global
.check_visibility
(v
, self, v
.module, false)
455 var psig
= prop
.signature_for
(type_lvalue
)
456 _assign_method
= prop
457 v
.check_conform_expr
(n_value
, psig
[0].not_for_self
)
458 v
.check_conform
(self, psig
.return_type
.not_for_self
, n_value
.stype
)
461 # Method used through the reassigment operator (once computed)
462 readable attr _assign_method
: MMMethod
465 redef class AVarReassignExpr
466 redef meth after_typing
(v
)
468 var t
= v
.variable_ctx
.stype
(variable
)
469 do_lvalue_typing
(v
, t
)
473 redef class PAssignOp
474 meth method_name
: Symbol is abstract
476 redef class APlusAssignOp
477 redef meth method_name
do return once
"+".to_symbol
479 redef class AMinusAssignOp
480 redef meth method_name
do return once
"-".to_symbol
483 redef class ASelfExpr
484 redef meth after_typing
(v
)
486 assert v
.self_type
!= null
490 redef meth is_self
do return true
493 redef class AImplicitSelfExpr
494 redef meth is_implicit_self
do return true
497 redef class AIfexprExpr
498 redef meth accept_typing
(v
)
500 var old_var_ctx
= v
.variable_ctx
503 if n_expr
.if_true_variable_ctx
!= null then v
.variable_ctx
= n_expr
.if_true_variable_ctx
505 v
.variable_ctx
= old_var_ctx
508 v
.check_conform_expr
(n_expr
, v
.type_bool
)
510 if not v
.check_expr
(n_then
) or not v
.check_expr
(n_else
) then return
513 var te
= n_else
.stype
516 else if not te
< t
then
517 v
.error
(self, "Type error: {te} is not a subtype of {t}.")
525 redef class ABoolExpr
526 redef meth after_typing
(v
)
533 redef meth after_typing
(v
)
535 v
.check_conform_expr
(n_expr
, v
.type_bool
)
536 v
.check_conform_expr
(n_expr2
, v
.type_bool
)
542 redef meth accept_typing
(v
)
544 var old_var_ctx
= v
.variable_ctx
547 if n_expr
.if_true_variable_ctx
!= null then v
.variable_ctx
= n_expr
.if_true_variable_ctx
550 if n_expr2
.if_true_variable_ctx
!= null then
551 _if_true_variable_ctx
= n_expr2
.if_true_variable_ctx
553 _if_true_variable_ctx
= v
.variable_ctx
556 v
.variable_ctx
= old_var_ctx
558 v
.check_conform_expr
(n_expr
, v
.type_bool
)
559 v
.check_conform_expr
(n_expr2
, v
.type_bool
)
565 redef meth after_typing
(v
)
567 v
.check_conform_expr
(n_expr
, v
.type_bool
)
573 redef meth after_typing
(v
)
580 redef class AFloatExpr
581 redef meth after_typing
(v
)
583 _stype
= v
.type_float
587 redef class ACharExpr
588 redef meth after_typing
(v
)
594 redef class AStringFormExpr
595 redef meth after_typing
(v
)
597 _stype
= v
.type_string
601 redef class ASuperstringExpr
602 redef meth after_typing
(v
)
604 _stype
= v
.type_string
608 redef class ANullExpr
609 redef meth after_typing
(v
)
615 redef class AArrayExpr
616 private meth stype
=(t
: MMType) do _stype
= t
618 redef meth after_typing
(v
)
620 var stype
: MMType = null
623 if stype
== null or (ntype
!= null and stype
< ntype
) then
628 v
.check_conform_expr
(n
, stype
)
630 _stype
= v
.type_array
(stype
)
634 redef class ARangeExpr
635 redef meth after_typing
(v
)
637 var ntype
= n_expr
.stype
638 var ntype2
= n_expr2
.stype
639 if ntype
== null or ntype
== null then
642 if ntype
< ntype2
then
644 else if not ntype2
< ntype
then
645 v
.error
(self, "Type error: {ntype} incompatible with {ntype2}.")
648 var dtype
= v
.type_discrete
649 v
.check_conform_expr
(n_expr
, dtype
)
650 v
.check_conform_expr
(n_expr2
, dtype
)
651 _stype
= v
.type_range
(ntype
)
655 redef class ASuperExpr
656 special ASuperInitCall
657 # readable attr _prop: MMSrcMethod
658 readable attr _init_in_superclass
: MMMethod
659 redef meth after_typing
(v
)
661 var precs
: Array[MMLocalProperty] = v
.local_property
.prhe
.direct_greaters
662 if not precs
.is_empty
then
663 v
.local_property
.need_super
= true
664 else if v
.local_property
.global
.is_init
then
665 var base_precs
= v
.local_class
.super_methods_named
(v
.local_property
.name
)
666 for p
in base_precs
do
667 if not p
.global
.is_init
then
668 v
.error
(self, "Error: {p.local_class}::{p} is not a constructor.")
670 precs
.add
(v
.local_class
[p
.global
])
673 if precs
.is_empty
then
674 v
.error
(self, "Error: No contructor named {v.local_property.name} in superclasses.")
676 else if precs
.length
> 1 then
677 v
.error
(self, "Error: Conflicting contructors named {v.local_property.name} in superclasses: {precs.join(", ")}.")
680 var p
= base_precs
.first
681 assert p
isa MMMethod
682 _init_in_superclass
= p
683 register_super_init_call
(v
, p
)
684 if n_args
.length
> 0 then
685 var signature
= get_signature
(v
, v
.self_type
, p
, true)
686 _arguments
= process_signature
(v
, signature
, p
, n_args
.to_a
)
689 v
.error
(self, "Error: No super method to call for {v.local_property}.")
693 if precs
.first
.signature_for
(v
.self_type
).return_type
!= null then
694 var stypes
= new Array[MMType]
695 var stype
: MMType = null
697 assert prop
isa MMMethod
698 var t
= prop
.signature_for
(v
.self_type
).return_type
.for_module
(v
.module).adapt_to
(v
.local_property
.signature
.recv
)
700 if stype
== null or stype
< t
then
705 v
.check_conform
(self, t
, stype
)
709 var p
= v
.local_property
710 assert p
isa MMSrcMethod
715 redef class AAttrFormExpr
717 readable attr _prop
: MMAttribute
719 # Attribute type of the acceded attribute
720 readable attr _attr_type
: MMType
722 # Compute the attribute accessed
723 private meth do_typing
(v
: TypingVisitor)
725 if not v
.check_expr
(n_expr
) then return
726 var type_recv
= n_expr
.stype
727 var name
= n_id
.to_symbol
728 var prop
= type_recv
.local_class
.select_attribute
(name
)
730 v
.error
(self, "Error: Attribute {name} doesn't exists in {type_recv}.")
732 else if v
.module.visibility_for
(prop
.global
.local_class
.module) < 3 then
733 v
.error
(self, "Error: Attribute {name} from {prop.global.local_class.module} is invisible in {v.module}")
736 var at
= prop
.signature_for
(type_recv
).return_type
737 if not n_expr
.is_self
then at
= at
.not_for_self
742 redef class AAttrExpr
743 redef meth after_typing
(v
)
753 redef class AAttrAssignExpr
754 redef meth after_typing
(v
)
760 v
.check_conform_expr
(n_value
, attr_type
)
764 redef class AAttrReassignExpr
765 redef meth after_typing
(v
)
771 do_lvalue_typing
(v
, attr_type
)
777 # Compute the called global property
778 private meth do_typing
(v
: TypingVisitor, type_recv
: MMType, is_implicit_self
: Bool, recv_is_self
: Bool, name
: Symbol, raw_args
: Array[PExpr])
780 var prop
= get_property
(v
, type_recv
, is_implicit_self
, name
)
781 if prop
== null then return
782 var sig
= get_signature
(v
, type_recv
, prop
, recv_is_self
)
783 if sig
== null then return
784 var args
= process_signature
(v
, sig
, prop
, raw_args
)
785 if args
== null then return
790 private meth get_property
(v
: TypingVisitor, type_recv
: MMType, is_implicit_self
: Bool, name
: Symbol): MMMethod
792 if type_recv
== null then return null
793 var prop
= type_recv
.local_class
.select_method
(name
)
794 if prop
== null and v
.local_property
.global
.is_init
then
795 var props
= type_recv
.local_class
.super_methods_named
(name
)
796 if props
.length
> 1 then
797 v
.error
(self, "Error: Ambigous method name '{name}' for {props.join(", ")}. Use explicit designation.")
799 else if props
.length
== 1 then
800 var p
= type_recv
.local_class
[props
.first
.global
]
801 assert p
isa MMMethod
807 if is_implicit_self
then
808 v
.error
(self, "Error: Method or variable '{name}' unknown in {type_recv}.")
810 v
.error
(self, "Error: Method '{name}' doesn't exists in {type_recv}.")
817 private meth get_signature
(v
: TypingVisitor, type_recv
: MMType, prop
: MMMethod, recv_is_self
: Bool): MMSignature
819 prop
.global
.check_visibility
(v
, self, v
.module, recv_is_self
)
820 var psig
= prop
.signature_for
(type_recv
)
821 if not recv_is_self
then psig
= psig
.not_for_self
825 # Check the conformity of a set of arguments `raw_args' to a signature.
826 private meth process_signature
(v
: TypingVisitor, psig
: MMSignature, prop
: MMMethod, raw_args
: Array[PExpr]): Array[PExpr]
828 var par_vararg
= psig
.vararg_rank
829 var par_arity
= psig
.arity
831 if raw_args
== null then raw_arity
= 0 else raw_arity
= raw_args
.length
832 if par_arity
> raw_arity
or (par_arity
!= raw_arity
and par_vararg
== -1) then
833 v
.error
(self, "Error: Method '{prop}' arity missmatch.")
837 var args
= new Array[PExpr]
838 for par_idx
in [0..par_arity
[ do
840 var par_type
= psig
[par_idx
]
841 if par_idx
== par_vararg
then
842 var star
= new Array[PExpr]
843 for i
in [0..(raw_arity-par_arity
)] do
844 a
= raw_args
[arg_idx
]
845 v
.check_conform_expr
(a
, par_type
)
847 arg_idx
= arg_idx
+ 1
849 var aa
= new AArrayExpr.init_aarrayexpr
(star
)
850 aa
.stype
= v
.type_array
(par_type
)
853 a
= raw_args
[arg_idx
]
854 v
.check_conform_expr
(a
, par_type
)
855 arg_idx
= arg_idx
+ 1
862 # The invoked method (once computed)
863 readable attr _prop
: MMMethod
865 # The real arguments used (after star transformation) (once computed)
866 readable attr _arguments
: Array[PExpr]
869 # A possible call of constructor in a super class
870 # Could be an explicit call or with the 'super' keyword
873 private meth register_super_init_call
(v
: TypingVisitor, property
: MMMethod)
875 if parent
!= v
.top_block
and self != v
.top_block
then
876 v
.error
(self, "Error: Constructor invocation {property} must not be in nested block.")
878 var cla
= v
.module[property
.global
.intro
.local_class
.global
]
879 var prev_class
: MMLocalClass = null
880 if not v
.explicit_super_init_calls
.is_empty
then
881 prev_class
= v
.explicit_super_init_calls
.last
.global
.intro
.local_class
883 var order
= v
.local_class
.cshe
.reverse_linear_extension
884 if cla
== v
.local_class
then
885 v
.explicit_other_init_call
= true
886 else if not order
.has
(cla
) then
887 v
.error
(self, "Error: Constructor of class {cla} must be one in {order.join(", ")}.")
888 else if cla
== prev_class
then
889 v
.error
(self, "Error: Only one super constructor invocation of class {cla} is allowed.")
891 var last_is_found
= prev_class
== null
893 if c
== prev_class
then
895 else if c
== cla
then
896 if not last_is_found
then
897 v
.error
(self, "Error: Constructor of {c} must be invoked before constructor of {prev_class}")
899 v
.explicit_super_init_calls
.add
(property
)
910 redef meth after_typing
(v
)
913 if t
== null then return
914 if t
.local_class
.global
.is_abstract
then
915 v
.error
(self, "Error: try to instantiate abstract class {t.local_class}.")
920 name
= once
"init".to_symbol
922 name
= n_id
.to_symbol
925 do_typing
(v
, t
, false, false, name
, n_args
.to_a
)
926 if prop
== null then return
928 if not prop
.global
.is_init
then
929 v
.error
(self, "Error: {prop} is not a constructor.")
936 redef class ASendExpr
937 special ASuperInitCall
938 # Name of the invoked property
939 meth name
: Symbol is abstract
941 # Raw arguments used (withour star transformation)
942 meth raw_arguments
: Array[PExpr] is abstract
944 redef meth after_typing
(v
)
949 private meth do_all_typing
(v
: TypingVisitor)
951 if not v
.check_expr
(n_expr
) then return
952 do_typing
(v
, n_expr
.stype
, n_expr
.is_implicit_self
, n_expr
.is_self
, name
, raw_arguments
)
953 if prop
== null then return
954 if prop
.global
.is_init
then
955 if not v
.local_property
.global
.is_init
then
956 v
.error
(self, "Error: try to invoke constructor {prop} in a method.")
957 else if not n_expr
.is_self
then
958 v
.error
(self, "Error: constructor {prop} is not invoken on 'self'.")
960 register_super_init_call
(v
, prop
)
963 var t
= prop
.signature_for
(n_expr
.stype
).return_type
964 if t
!= null and not n_expr
.is_self
then t
= t
.not_for_self
969 class ASendReassignExpr
971 special AReassignFormExpr
972 readable attr _read_prop
: MMMethod
973 redef meth do_all_typing
(v
)
975 if not v
.check_expr
(n_expr
) then return
976 var raw_args
= raw_arguments
977 do_typing
(v
, n_expr
.stype
, n_expr
.is_implicit_self
, n_expr
.is_self
, name
, raw_args
)
978 if prop
== null then return
979 if prop
.global
.is_init
then
980 if not v
.local_property
.global
.is_init
then
981 v
.error
(self, "Error: try to invoke constructor {prop} in a method.")
982 else if not n_expr
.is_self
then
983 v
.error
(self, "Error: constructor {prop} is not invoken on 'self'.")
986 var t
= prop
.signature_for
(n_expr
.stype
).return_type
987 if not n_expr
.is_self
then t
= t
.not_for_self
989 do_lvalue_typing
(v
, t
)
992 var old_args
= arguments
993 raw_args
.add
(n_value
)
995 do_typing
(v
, n_expr
.stype
, n_expr
.is_implicit_self
, n_expr
.is_self
, "{name}=".to_symbol
, raw_args
)
996 if prop
== null then return
997 if prop
.global
.is_init
then
998 if not v
.local_property
.global
.is_init
then
999 v
.error
(self, "Error: try to invoke constructor {prop} in a method.")
1000 else if not n_expr
.is_self
then
1001 v
.error
(self, "Error: constructor {prop} is not invoken on 'self'.")
1005 _arguments
= old_args
# FIXME: What if star parameters do not match betwen the two methods?
1009 redef class ABinopExpr
1010 redef meth raw_arguments
do return [n_expr2
]
1013 redef meth name
do return once
"==".to_symbol
1016 redef meth name
do return once
"!=".to_symbol
1019 redef meth name
do return once
"<".to_symbol
1022 redef meth name
do return once
"<=".to_symbol
1025 redef meth name
do return once
">".to_symbol
1028 redef meth name
do return once
">=".to_symbol
1030 redef class APlusExpr
1031 redef meth name
do return once
"+".to_symbol
1033 redef class AMinusExpr
1034 redef meth name
do return once
"-".to_symbol
1036 redef class AStarshipExpr
1037 redef meth name
do return once
"<=>".to_symbol
1039 redef class AStarExpr
1040 redef meth name
do return once
"*".to_symbol
1042 redef class ASlashExpr
1043 redef meth name
do return once
"/".to_symbol
1045 redef class APercentExpr
1046 redef meth name
do return once
"%".to_symbol
1049 redef class AUminusExpr
1050 redef meth name
do return once
"unary -".to_symbol
1051 redef meth raw_arguments
do return null
1054 redef class ACallFormExpr
1055 redef meth after_typing
(v
)
1057 if n_expr
.is_implicit_self
then
1058 var name
= n_id
.to_symbol
1059 var variable
= v
.variable_ctx
[name
]
1060 if variable
!= null then
1061 if not n_args
.is_empty
then
1062 v
.error
(self, "Error: {name} is variable, not a function.")
1064 var vform
= variable_create
(variable
)
1065 vform
.variable
= variable
1067 vform
.after_typing
(v
)
1074 # Create a variable acces corresponding to the call form
1075 meth variable_create
(variable
: Variable): AVarFormExpr is abstract
1078 redef class ACallExpr
1079 redef meth variable_create
(variable
)
1081 return new AVarExpr.init_avarexpr
(n_id
)
1084 redef meth name
do return n_id
.to_symbol
1085 redef meth raw_arguments
do return n_args
.to_a
1088 redef class ACallAssignExpr
1089 redef meth variable_create
(variable
)
1091 return new AVarAssignExpr.init_avarassignexpr
(n_id
, n_assign
, n_value
)
1094 redef meth name
do return (n_id
.text
+ "=").to_symbol
1095 redef meth raw_arguments
do
1096 var res
= n_args
.to_a
1102 redef class ACallReassignExpr
1103 special ASendReassignExpr
1104 redef meth variable_create
(variable
)
1106 return new AVarReassignExpr.init_avarreassignexpr
(n_id
, n_assign_op
, n_value
)
1109 redef meth name
do return n_id
.to_symbol
1110 redef meth raw_arguments
do return n_args
.to_a
1113 redef class ABraExpr
1114 redef meth name
do return once
"[]".to_symbol
1115 redef meth raw_arguments
do return n_args
.to_a
1118 redef class ABraAssignExpr
1119 redef meth name
do return once
"[]=".to_symbol
1120 redef meth raw_arguments
do
1121 var res
= n_args
.to_a
1127 redef class ABraReassignExpr
1128 special ASendReassignExpr
1129 redef meth name
do return once
"[]".to_symbol
1130 redef meth raw_arguments
do return n_args
.to_a
1133 redef class AInitExpr
1134 redef meth name
do return once
"init".to_symbol
1135 redef meth raw_arguments
do return n_args
.to_a
1138 redef class AIsaExpr
1139 redef meth after_typing
(v
)
1141 if n_expr
.is_variable
then
1143 assert n
isa AVarExpr
1144 _if_true_variable_ctx
= v
.variable_ctx
.sub_with
(n
.variable
, n_type
.stype
)
1146 _stype
= v
.type_bool
1150 redef class AAsCastExpr
1151 redef meth after_typing
(v
)
1153 v
.check_expr
(n_expr
)
1154 _stype
= n_type
.stype
1158 redef class AProxyExpr
1159 redef meth after_typing
(v
)
1161 _stype
= n_expr
.stype