1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 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 and verification of property definitions to instantiate model element
18 module modelize_property
20 intrude import modelize_class
21 private import annotation
23 redef class ToolContext
24 # Run `AClassdef::build_property` on the classdefs of each module
25 var modelize_property_phase
: Phase = new ModelizePropertyPhase(self, [modelize_class_phase
])
28 private class ModelizePropertyPhase
30 redef fun process_nmodule
(nmodule
)
32 for nclassdef
in nmodule
.n_classdefs
do
33 if nclassdef
.all_defs
== null then continue # skip non principal classdef
34 toolcontext
.modelbuilder
.build_properties
(nclassdef
)
39 redef class ModelBuilder
40 # Registration of the npropdef associated to each mpropdef.
42 # Public clients need to use `mpropdef2node` to access stuff.
43 private var mpropdef2npropdef
= new HashMap[MPropDef, APropdef]
45 # Retrieve the associated AST node of a mpropertydef.
46 # This method is used to associate model entity with syntactic entities.
48 # If the property definition is not associated with a node, returns `null`.
49 fun mpropdef2node
(mpropdef
: MPropDef): nullable ANode
52 res
= mpropdef2npropdef
.get_or_null
(mpropdef
)
54 # Run the phases on it
55 toolcontext
.run_phases_on_npropdef
(res
)
58 if mpropdef
isa MMethodDef and mpropdef
.mproperty
.is_root_init
then
59 res
= mclassdef2nclassdef
.get_or_null
(mpropdef
.mclassdef
)
60 if res
!= null then return res
65 # Retrieve all the attributes nodes localy definied
66 # FIXME think more about this method and how the separations separate/global and ast/model should be done.
67 fun collect_attr_propdef
(mclassdef
: MClassDef): Array[AAttrPropdef]
69 var res
= new Array[AAttrPropdef]
70 var n
= mclassdef2nclassdef
.get_or_null
(mclassdef
)
71 if n
== null then return res
72 for npropdef
in n
.n_propdefs
do
73 if npropdef
isa AAttrPropdef then
74 # Run the phases on it
75 toolcontext
.run_phases_on_npropdef
(npropdef
)
82 # Build the properties of `nclassdef`.
83 # REQUIRE: all superclasses are built.
84 private fun build_properties
(nclassdef
: AClassdef)
86 # Force building recursively
87 if nclassdef
.build_properties_is_done
then return
88 nclassdef
.build_properties_is_done
= true
89 var mclassdef
= nclassdef
.mclassdef
.as(not null)
90 if mclassdef
.in_hierarchy
== null then return # Skip error
91 for superclassdef
in mclassdef
.in_hierarchy
.direct_greaters
do
92 if not mclassdef2nclassdef
.has_key
(superclassdef
) then continue
93 build_properties
(mclassdef2nclassdef
[superclassdef
])
96 mclassdef
.build_self_type
(self, nclassdef
)
97 for nclassdef2
in nclassdef
.all_defs
do
98 for npropdef
in nclassdef2
.n_propdefs
do
99 npropdef
.build_property
(self, mclassdef
)
101 for npropdef
in nclassdef2
.n_propdefs
do
102 npropdef
.build_signature
(self)
104 for npropdef
in nclassdef2
.n_propdefs
do
105 if not npropdef
isa ATypePropdef then continue
107 var mpropdef
= npropdef
.mpropdef
108 if mpropdef
== null then continue
109 if mpropdef
.bound
== null then continue
110 if not check_virtual_types_circularity
(npropdef
, mpropdef
.mproperty
, mclassdef
.bound_mtype
, mclassdef
.mmodule
) then
111 # Invalidate the bound
112 mpropdef
.bound
= mclassdef
.mmodule
.model
.null_type
115 for npropdef
in nclassdef2
.n_propdefs
do
116 # Check ATypePropdef first since they may be required for the other properties
117 if not npropdef
isa ATypePropdef then continue
118 npropdef
.check_signature
(self)
121 for npropdef
in nclassdef2
.n_propdefs
do
122 if npropdef
isa ATypePropdef then continue
123 npropdef
.check_signature
(self)
126 process_default_constructors
(nclassdef
)
129 # the root init of the Object class
130 # Is usually implicitly defined
131 # Then explicit or implicit definitions of root-init are attached to it
132 var the_root_init_mmethod
: nullable MMethod
134 # Introduce or inherit default constructor
135 # This is the last part of `build_properties`.
136 private fun process_default_constructors
(nclassdef
: AClassdef)
138 var mclassdef
= nclassdef
.mclassdef
.as(not null)
140 # Are we a refinement
141 if not mclassdef
.is_intro
then return
143 # Look for the init in Object, or create it
144 if mclassdef
.mclass
.name
== "Object" and the_root_init_mmethod
== null then
145 # Create the implicit root-init method
146 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
147 mprop
.is_root_init
= true
148 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
149 var mparameters
= new Array[MParameter]
150 var msignature
= new MSignature(mparameters
, null)
151 mpropdef
.msignature
= msignature
152 mpropdef
.new_msignature
= msignature
154 nclassdef
.mfree_init
= mpropdef
155 self.toolcontext
.info
("{mclassdef} gets a free empty constructor {mpropdef}{msignature}", 3)
156 the_root_init_mmethod
= mprop
160 # Is the class forbid constructors?
161 if not mclassdef
.mclass
.kind
.need_init
then return
163 # Is there already a constructor defined?
164 var defined_init
: nullable MMethodDef = null
165 for mpropdef
in mclassdef
.mpropdefs
do
166 if not mpropdef
isa MMethodDef then continue
167 if not mpropdef
.mproperty
.is_init
then continue
168 if mpropdef
.mproperty
.is_root_init
then
169 assert defined_init
== null
170 defined_init
= mpropdef
171 else if mpropdef
.mproperty
.name
== "init" then
172 # An explicit old-style init named "init", so return
177 if not nclassdef
isa AStdClassdef then return
179 # Collect undefined attributes
180 var mparameters
= new Array[MParameter]
181 var initializers
= new Array[MProperty]
182 for npropdef
in nclassdef
.n_propdefs
do
183 if npropdef
isa AMethPropdef then
184 if npropdef
.mpropdef
== null then return # Skip broken attribute
185 var at
= npropdef
.get_single_annotation
("autoinit", self)
186 if at
== null then continue # Skip non tagged init
188 var sig
= npropdef
.mpropdef
.msignature
189 if sig
== null then continue # Skip broken method
191 if not npropdef
.mpropdef
.is_intro
then
192 self.error
(at
, "Error: `autoinit` cannot be set on redefinitions")
196 for param
in sig
.mparameters
do
197 var ret_type
= param
.mtype
198 var mparameter
= new MParameter(param
.name
, ret_type
, false)
199 mparameters
.add
(mparameter
)
201 initializers
.add
(npropdef
.mpropdef
.mproperty
)
202 npropdef
.mpropdef
.mproperty
.is_autoinit
= true
204 if npropdef
isa AAttrPropdef then
205 if npropdef
.mpropdef
== null then return # Skip broken attribute
206 if npropdef
.noinit
then continue # Skip noinit attribute
207 var atautoinit
= npropdef
.get_single_annotation
("autoinit", self)
208 if atautoinit
!= null then
209 # For autoinit attributes, call the reader to force
210 # the lazy initialization of the attribute.
211 initializers
.add
(npropdef
.mreadpropdef
.mproperty
)
212 npropdef
.mreadpropdef
.mproperty
.is_autoinit
= true
215 if npropdef
.has_value
then continue
216 var paramname
= npropdef
.mpropdef
.mproperty
.name
.substring_from
(1)
217 var ret_type
= npropdef
.mpropdef
.static_mtype
218 if ret_type
== null then return
219 var mparameter
= new MParameter(paramname
, ret_type
, false)
220 mparameters
.add
(mparameter
)
221 var msetter
= npropdef
.mwritepropdef
222 if msetter
== null then
223 # No setter, it is a old-style attribute, so just add it
224 initializers
.add
(npropdef
.mpropdef
.mproperty
)
225 npropdef
.mpropdef
.mproperty
.is_autoinit
= true
227 # Add the setter to the list
228 initializers
.add
(msetter
.mproperty
)
229 msetter
.mproperty
.is_autoinit
= true
234 if the_root_init_mmethod
== null then return
236 # Look for most-specific new-stype init definitions
237 var spropdefs
= the_root_init_mmethod
.lookup_super_definitions
(mclassdef
.mmodule
, mclassdef
.bound_mtype
)
238 if spropdefs
.is_empty
then
239 toolcontext
.error
(nclassdef
.location
, "Error: {mclassdef} does not specialize {the_root_init_mmethod.intro_mclassdef}. Possible duplication of the root class `Object`?")
243 # Look at the autoinit class-annotation
244 var autoinit
= nclassdef
.get_single_annotation
("autoinit", self)
245 var noautoinit
= nclassdef
.get_single_annotation
("noautoinit", self)
246 if autoinit
!= null then
247 # Just throws the collected initializers
251 if noautoinit
!= null then
252 error
(autoinit
, "Error: `autoinit` and `noautoinit` are incompatible.")
255 if autoinit
.n_args
.is_empty
then
256 error
(autoinit
, "Syntax error: `autoinit` expects method identifiers, use `noautoinit` to clear all autoinits.")
259 # Get and check each argument
260 for narg
in autoinit
.n_args
do
263 error
(narg
, "Syntax error: `autoinit` expects method identifiers.")
267 # Search the property.
268 # To avoid bad surprises, try to get the setter first.
269 var p
= try_get_mproperty_by_name
(narg
, mclassdef
, id
+ "=")
271 p
= try_get_mproperty_by_name
(narg
, mclassdef
, id
)
274 error
(narg
, "Error: unknown method `{id}`")
277 if not p
.is_autoinit
then
278 error
(narg
, "Error: `{p}` is not an autoinit method")
282 # Register the initializer and the parameters
285 if pd
isa MMethodDef then
286 # Get the signature resolved for the current receiver
287 var sig
= pd
.msignature
.resolve_for
(mclassdef
.mclass
.mclass_type
, mclassdef
.bound_mtype
, mclassdef
.mmodule
, false)
288 mparameters
.add_all sig
.mparameters
294 else if noautoinit
!= null then
295 if initializers
.is_empty
then
296 warning
(noautoinit
, "useless-noautoinit", "Warning: the list of autoinit is already empty.")
298 # Just clear initializers
302 # Search the longest-one and checks for conflict
303 var longest
= spropdefs
.first
304 if spropdefs
.length
> 1 then
305 # Check for conflict in the order of initializers
306 # Each initializer list must me a prefix of the longest list
307 # part 1. find the longest list
308 for spd
in spropdefs
do
309 if spd
.initializers
.length
> longest
.initializers
.length
then longest
= spd
312 for spd
in spropdefs
do
314 for p
in spd
.initializers
do
315 if p
!= longest
.initializers
[i
] then
316 self.error
(nclassdef
, "Error: conflict for inherited inits {spd}({spd.initializers.join(", ")}) and {longest}({longest.initializers.join(", ")})")
324 # Can we just inherit?
325 if spropdefs
.length
== 1 and mparameters
.is_empty
and defined_init
== null then
326 self.toolcontext
.info
("{mclassdef} inherits the basic constructor {longest}", 3)
327 mclassdef
.mclass
.root_init
= longest
331 # Combine the inherited list to what is collected
332 if longest
.initializers
.length
> 0 then
333 mparameters
.prepend longest
.new_msignature
.mparameters
334 initializers
.prepend longest
.initializers
338 # If we already have a basic init definition, then setup its initializers
339 if defined_init
!= null then
340 defined_init
.initializers
.add_all
(initializers
)
341 var msignature
= new MSignature(mparameters
, null)
342 defined_init
.new_msignature
= msignature
343 self.toolcontext
.info
("{mclassdef} extends its basic constructor signature to {defined_init}{msignature}", 3)
344 mclassdef
.mclass
.root_init
= defined_init
348 # Else create the local implicit basic init definition
349 var mprop
= the_root_init_mmethod
.as(not null)
350 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
351 mpropdef
.has_supercall
= true
352 mpropdef
.initializers
.add_all
(initializers
)
353 var msignature
= new MSignature(mparameters
, null)
354 mpropdef
.new_msignature
= msignature
355 mpropdef
.msignature
= new MSignature(new Array[MParameter], null) # always an empty real signature
356 nclassdef
.mfree_init
= mpropdef
357 self.toolcontext
.info
("{mclassdef} gets a free constructor for attributes {mpropdef}{msignature}", 3)
358 mclassdef
.mclass
.root_init
= mpropdef
361 # Check the visibility of `mtype` as an element of the signature of `mpropdef`.
362 fun check_visibility
(node
: ANode, mtype
: MType, mpropdef
: MPropDef)
364 var mmodule
= mpropdef
.mclassdef
.mmodule
365 var mproperty
= mpropdef
.mproperty
367 # Extract visibility information of the main part of `mtype`
368 # It is a case-by case
369 var vis_type
: nullable MVisibility = null # The own visibility of the type
370 var mmodule_type
: nullable MModule = null # The original module of the type
371 mtype
= mtype
.as_notnullable
372 if mtype
isa MClassType then
373 vis_type
= mtype
.mclass
.visibility
374 mmodule_type
= mtype
.mclass
.intro
.mmodule
375 else if mtype
isa MVirtualType then
376 vis_type
= mtype
.mproperty
.visibility
377 mmodule_type
= mtype
.mproperty
.intro_mclassdef
.mmodule
378 else if mtype
isa MParameterType then
379 # nothing, always visible
380 else if mtype
isa MNullType then
383 node
.debug
"Unexpected type {mtype}"
387 if vis_type
!= null then
388 assert mmodule_type
!= null
389 var vis_module_type
= mmodule
.visibility_for
(mmodule_type
) # the visibility of the original module
390 if mproperty
.visibility
> vis_type
then
391 error
(node
, "Error: The {mproperty.visibility} property `{mproperty}` cannot contain the {vis_type} type `{mtype}`")
393 else if mproperty
.visibility
> vis_module_type
then
394 error
(node
, "Error: The {mproperty.visibility} property `{mproperty}` cannot contain the type `{mtype}` from the {vis_module_type} module `{mmodule_type}`")
399 # No error, try to go deeper in generic types
400 if node
isa AType then
401 for a
in node
.n_types
do
403 if t
== null then continue # Error, thus skipped
404 check_visibility
(a
, t
, mpropdef
)
406 else if mtype
isa MGenericType then
407 for t
in mtype
.arguments
do check_visibility
(node
, t
, mpropdef
)
411 # Detect circularity errors for virtual types.
412 fun check_virtual_types_circularity
(node
: ANode, mproperty
: MVirtualTypeProp, recv
: MType, mmodule
: MModule): Bool
415 # Slow case: progress on each resolution until we visit all without getting a loop
417 # The graph used to detect loops
418 var mtype
= mproperty
.mvirtualtype
419 var poset
= new POSet[MType]
421 # The work-list of types to resolve
422 var todo
= new List[MType]
425 while not todo
.is_empty
do
429 if not t
.need_anchor
then continue
431 # Get the types derived of `t` (subtypes and bounds)
433 if t
isa MNullableType then
435 else if t
isa MGenericType then
437 else if t
isa MVirtualType then
439 # Because `vt` is possibly unchecked, we have to do the bound-lookup manually
440 var defs
= vt
.lookup_definitions
(mmodule
, recv
)
441 # TODO something to manage correctly bound conflicts
442 assert not defs
.is_empty
443 nexts
= new Array[MType]
445 var next
= defs
.first
.bound
446 if next
== null then return false
449 else if t
isa MClassType then
450 # Basic type, nothing to to
452 else if t
isa MParameterType then
453 # Parameter types cannot depend on virtual types, so nothing to do
461 if poset
.has_edge
(next
, t
) then
462 if mtype
== next
then
463 error
(node
, "Error: circularity of virtual type definition: {next} <-> {t}")
465 error
(node
, "Error: circularity of virtual type definition: {mtype} -> {next} <-> {t}")
469 poset
.add_edge
(t
, next
)
479 # Does the MPropDef contains a call to super or a call of a super-constructor?
480 # Subsequent phases of the frontend (esp. typing) set it if required
481 var has_supercall
: Bool = false is writable
484 redef class AClassdef
485 # Marker used in `ModelBuilder::build_properties`
486 private var build_properties_is_done
= false
488 # The free init (implicitely constructed by the class if required)
489 var mfree_init
: nullable MMethodDef = null
493 # The base init of the class.
494 # Used to get the common new_msignature and initializers
496 # TODO: Where to put this information is not clear because unlike other
497 # informations, the initialisers are stable in a same class.
498 var root_init
: nullable MMethodDef = null
501 redef class MClassDef
502 # What is the `APropdef` associated to a `MProperty`?
503 # Used to check multiple definition of a property.
504 var mprop2npropdef
: Map[MProperty, APropdef] = new HashMap[MProperty, APropdef]
506 # Build the virtual type `SELF` only for introduction `MClassDef`
507 fun build_self_type
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
509 if not is_intro
then return
512 var mprop
= modelbuilder
.try_get_mproperty_by_name
(nclassdef
, self, name
)
514 # If SELF type is declared nowherer?
515 if mprop
== null then return
517 # SELF is not a virtual type? it is weird but we ignore it
518 if not mprop
isa MVirtualTypeProp then return
520 # Is this the intro of SELF in the library?
521 var intro
= mprop
.intro
522 var intro_mclassdef
= intro
.mclassdef
523 if intro_mclassdef
== self then
524 var nintro
= modelbuilder
.mpropdef2npropdef
[intro
]
526 # SELF must be declared in Object, otherwise this will create conflicts
527 if intro_mclassdef
.mclass
.name
!= "Object" then
528 modelbuilder
.error
(nintro
, "Error: the virtual type SELF must be declared in Object.")
531 # SELF must be public
532 if mprop
.visibility
!= public_visibility
then
533 modelbuilder
.error
(nintro
, "Error: the virtual type SELF must be public.")
536 # SELF must not be fixed
537 if intro
.is_fixed
then
538 modelbuilder
.error
(nintro
, "Error: the virtual type SELF cannot be fixed.")
544 # This class introduction inherits a SELF
545 # We insert an artificial property to update it
546 var mpropdef
= new MVirtualTypeDef(self, mprop
, self.location
)
547 mpropdef
.bound
= mclass
.mclass_type
552 # The associated main model entity
553 type MPROPDEF: MPropDef
555 # The associated propdef once build by a `ModelBuilder`
556 var mpropdef
: nullable MPROPDEF is writable
558 private fun build_property
(modelbuilder
: ModelBuilder, mclassdef
: MClassDef) do end
559 private fun build_signature
(modelbuilder
: ModelBuilder) do end
560 private fun check_signature
(modelbuilder
: ModelBuilder) do end
561 private fun new_property_visibility
(modelbuilder
: ModelBuilder, mclassdef
: MClassDef, nvisibility
: nullable AVisibility): MVisibility
563 var mvisibility
= public_visibility
564 if nvisibility
!= null then
565 mvisibility
= nvisibility
.mvisibility
566 if mvisibility
== intrude_visibility
then
567 modelbuilder
.error
(nvisibility
, "Error: intrude is not a legal visibility for properties.")
568 mvisibility
= public_visibility
571 if mclassdef
.mclass
.visibility
== private_visibility
then
572 if mvisibility
== protected_visibility
then
573 assert nvisibility
!= null
574 modelbuilder
.error
(nvisibility
, "Error: The only legal visibility for properties in a private class is private.")
575 else if mvisibility
== private_visibility
then
576 assert nvisibility
!= null
577 modelbuilder
.advice
(nvisibility
, "useless-visibility", "Warning: private is superfluous since the only legal visibility for properties in a private class is private.")
579 mvisibility
= private_visibility
584 private fun set_doc
(mpropdef
: MPropDef, modelbuilder
: ModelBuilder)
586 var ndoc
= self.n_doc
588 var mdoc
= ndoc
.to_mdoc
590 mdoc
.original_mentity
= mpropdef
591 else if mpropdef
.is_intro
and mpropdef
.mproperty
.visibility
>= protected_visibility
then
592 modelbuilder
.advice
(self, "missing-doc", "Documentation warning: Undocumented property `{mpropdef.mproperty}`")
595 var at_deprecated
= get_single_annotation
("deprecated", modelbuilder
)
596 if at_deprecated
!= null then
597 if not mpropdef
.is_intro
then
598 modelbuilder
.error
(self, "Error: method redefinition cannot be deprecated.")
600 var info
= new MDeprecationInfo
601 ndoc
= at_deprecated
.n_doc
602 if ndoc
!= null then info
.mdoc
= ndoc
.to_mdoc
603 mpropdef
.mproperty
.deprecation
= info
608 private fun check_redef_property_visibility
(modelbuilder
: ModelBuilder, nvisibility
: nullable AVisibility, mprop
: MProperty)
610 if nvisibility
== null then return
611 var mvisibility
= nvisibility
.mvisibility
612 if mvisibility
!= mprop
.visibility
and mvisibility
!= public_visibility
then
613 modelbuilder
.error
(nvisibility
, "Error: redefinition changed the visibility from a {mprop.visibility} to a {mvisibility}")
617 private fun check_redef_keyword
(modelbuilder
: ModelBuilder, mclassdef
: MClassDef, kwredef
: nullable Token, need_redef
: Bool, mprop
: MProperty): Bool
619 if mclassdef
.mprop2npropdef
.has_key
(mprop
) then
620 modelbuilder
.error
(self, "Error: A property {mprop} is already defined in class {mclassdef.mclass} at line {mclassdef.mprop2npropdef[mprop].location.line_start}.")
623 if mprop
isa MMethod and mprop
.is_toplevel
!= (parent
isa ATopClassdef) then
624 if mprop
.is_toplevel
then
625 modelbuilder
.error
(self, "Error: {mprop} is a top level method.")
627 modelbuilder
.error
(self, "Error: {mprop} is not a top level method.")
632 if mprop
isa MMethod and mprop
.is_root_init
then return true
633 if kwredef
== null then
635 modelbuilder
.error
(self, "Redef error: {mclassdef.mclass}::{mprop.name} is an inherited property. To redefine it, add the redef keyword.")
639 # Check for full-name conflicts in the project.
640 # A public property should have a unique qualified name `project::class::prop`.
641 if mprop
.intro_mclassdef
.mmodule
.mgroup
!= null and mprop
.visibility
>= protected_visibility
then
642 var others
= modelbuilder
.model
.get_mproperties_by_name
(mprop
.name
)
643 if others
!= null then for other
in others
do
644 if other
!= mprop
and other
.intro_mclassdef
.mmodule
.mgroup
!= null and other
.intro_mclassdef
.mmodule
.mgroup
.mproject
== mprop
.intro_mclassdef
.mmodule
.mgroup
.mproject
and other
.intro_mclassdef
.mclass
.name
== mprop
.intro_mclassdef
.mclass
.name
and other
.visibility
>= protected_visibility
then
645 modelbuilder
.advice
(self, "full-name-conflict", "Warning: A property named `{other.full_name}` is already defined in module `{other.intro_mclassdef.mmodule}` for the class `{other.intro_mclassdef.mclass.name}`.")
651 if not need_redef
then
652 modelbuilder
.error
(self, "Error: No property {mclassdef.mclass}::{mprop.name} is inherited. Remove the redef keyword to define a new property.")
661 redef class ASignature
662 # Is the model builder has correctly visited the signature
663 var is_visited
= false
664 # Names of parameters from the AST
665 # REQUIRE: is_visited
666 var param_names
= new Array[String]
667 # Types of parameters from the AST
668 # REQUIRE: is_visited
669 var param_types
= new Array[MType]
670 # Rank of the vararg (of -1 if none)
671 # REQUIRE: is_visited
672 var vararg_rank
: Int = -1
674 var ret_type
: nullable MType = null
676 # Visit and fill information about a signature
677 private fun visit_signature
(modelbuilder
: ModelBuilder, mclassdef
: MClassDef): Bool
679 var mmodule
= mclassdef
.mmodule
680 var param_names
= self.param_names
681 var param_types
= self.param_types
682 for np
in self.n_params
do
683 param_names
.add
(np
.n_id
.text
)
684 var ntype
= np
.n_type
685 if ntype
!= null then
686 var mtype
= modelbuilder
.resolve_mtype_unchecked
(mmodule
, mclassdef
, ntype
, true)
687 if mtype
== null then return false # Skip error
688 for i
in [0..param_names
.length-param_types
.length
[ do
689 param_types
.add
(mtype
)
691 if np
.n_dotdotdot
!= null then
692 if self.vararg_rank
!= -1 then
693 modelbuilder
.error
(np
, "Error: {param_names[self.vararg_rank]} is already a vararg")
696 self.vararg_rank
= param_names
.length
- 1
701 var ntype
= self.n_type
702 if ntype
!= null then
703 self.ret_type
= modelbuilder
.resolve_mtype_unchecked
(mmodule
, mclassdef
, ntype
, true)
704 if self.ret_type
== null then return false # Skip error
707 self.is_visited
= true
711 private fun check_signature
(modelbuilder
: ModelBuilder, mclassdef
: MClassDef): Bool
714 for np
in self.n_params
do
715 var ntype
= np
.n_type
716 if ntype
!= null then
717 if modelbuilder
.resolve_mtype
(mclassdef
.mmodule
, mclassdef
, ntype
) == null then
722 var ntype
= self.n_type
723 if ntype
!= null then
724 if modelbuilder
.resolve_mtype
(mclassdef
.mmodule
, mclassdef
, ntype
) == null then
733 # The associated mparameter if any
734 var mparameter
: nullable MParameter = null
737 redef class AMethPropdef
738 redef type MPROPDEF: MMethodDef
741 # Can self be used as a root init?
742 private fun look_like_a_root_init
(modelbuilder
: ModelBuilder, mclassdef
: MClassDef): Bool
744 # Need the `init` keyword
745 if n_kwinit
== null then return false
746 # Need to by anonymous
747 if self.n_methid
!= null then return false
748 # No annotation on itself
749 if get_single_annotation
("old_style_init", modelbuilder
) != null then return false
751 var amod
= self.parent
.parent
.as(AModule)
752 var amoddecl
= amod
.n_moduledecl
753 if amoddecl
!= null then
754 var old
= amoddecl
.get_single_annotation
("old_style_init", modelbuilder
)
755 if old
!= null then return false
758 if self.n_signature
.n_params
.length
> 0 then
759 modelbuilder
.advice
(self, "old-init", "Warning: init with signature in {mclassdef}")
762 # Cannot be private or something
763 if not self.n_visibility
isa APublicVisibility then
764 modelbuilder
.advice
(self, "old-init", "Warning: non-public init in {mclassdef}")
771 redef fun build_property
(modelbuilder
, mclassdef
)
773 var n_kwinit
= n_kwinit
774 var n_kwnew
= n_kwnew
775 var is_init
= n_kwinit
!= null or n_kwnew
!= null
777 var amethodid
= self.n_methid
779 if amethodid
== null then
783 else if n_kwinit
!= null then
786 else if n_kwnew
!= null then
792 else if amethodid
isa AIdMethid then
793 name
= amethodid
.n_id
.text
794 name_node
= amethodid
796 # operator, bracket or assign
797 name
= amethodid
.collect_text
798 name_node
= amethodid
800 if name
== "-" and self.n_signature
.n_params
.length
== 0 then
805 var look_like_a_root_init
= look_like_a_root_init
(modelbuilder
, mclassdef
)
806 var mprop
: nullable MMethod = null
807 if not is_init
or n_kwredef
!= null then mprop
= modelbuilder
.try_get_mproperty_by_name
(name_node
, mclassdef
, name
).as(nullable MMethod)
808 if mprop
== null and look_like_a_root_init
then
809 mprop
= modelbuilder
.the_root_init_mmethod
811 if nb
isa ABlockExpr and nb
.n_expr
.is_empty
and n_doc
== null then
812 modelbuilder
.advice
(self, "useless-init", "Warning: useless empty init in {mclassdef}")
815 if mprop
== null then
816 var mvisibility
= new_property_visibility
(modelbuilder
, mclassdef
, self.n_visibility
)
817 mprop
= new MMethod(mclassdef
, name
, mvisibility
)
818 if look_like_a_root_init
and modelbuilder
.the_root_init_mmethod
== null then
819 modelbuilder
.the_root_init_mmethod
= mprop
820 mprop
.is_root_init
= true
822 mprop
.is_init
= is_init
823 mprop
.is_new
= n_kwnew
!= null
824 if mprop
.is_new
then mclassdef
.mclass
.has_new_factory
= true
825 if parent
isa ATopClassdef then mprop
.is_toplevel
= true
826 self.check_redef_keyword
(modelbuilder
, mclassdef
, n_kwredef
, false, mprop
)
828 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, n_kwredef
, not self isa AMainMethPropdef, mprop
) then return
829 check_redef_property_visibility
(modelbuilder
, self.n_visibility
, mprop
)
832 # Check name conflicts in the local class for constructors.
834 for p
, n
in mclassdef
.mprop2npropdef
do
835 if p
!= mprop
and p
isa MMethod and p
.name
== name
then
836 check_redef_keyword
(modelbuilder
, mclassdef
, n_kwredef
, false, p
)
842 mclassdef
.mprop2npropdef
[mprop
] = self
844 var mpropdef
= new MMethodDef(mclassdef
, mprop
, self.location
)
846 set_doc
(mpropdef
, modelbuilder
)
848 self.mpropdef
= mpropdef
849 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
850 if mpropdef
.is_intro
then
851 modelbuilder
.toolcontext
.info
("{mpropdef} introduces new method {mprop.full_name}", 4)
853 modelbuilder
.toolcontext
.info
("{mpropdef} redefines method {mprop.full_name}", 4)
857 redef fun build_signature
(modelbuilder
)
859 var mpropdef
= self.mpropdef
860 if mpropdef
== null then return # Error thus skiped
861 var mclassdef
= mpropdef
.mclassdef
862 var mmodule
= mclassdef
.mmodule
863 var nsig
= self.n_signature
865 if mpropdef
.mproperty
.is_root_init
and not mclassdef
.is_intro
then
866 var root_init
= mclassdef
.mclass
.root_init
867 if root_init
!= null then
868 # Inherit the initializers by refinement
869 mpropdef
.new_msignature
= root_init
.new_msignature
870 assert mpropdef
.initializers
.is_empty
871 mpropdef
.initializers
.add_all root_init
.initializers
875 # Retrieve info from the signature AST
876 var param_names
= new Array[String] # Names of parameters from the AST
877 var param_types
= new Array[MType] # Types of parameters from the AST
879 var ret_type
: nullable MType = null # Return type from the AST
881 if not nsig
.visit_signature
(modelbuilder
, mclassdef
) then return
882 param_names
= nsig
.param_names
883 param_types
= nsig
.param_types
884 vararg_rank
= nsig
.vararg_rank
885 ret_type
= nsig
.ret_type
888 # Look for some signature to inherit
889 # FIXME: do not inherit from the intro, but from the most specific
890 var msignature
: nullable MSignature = null
891 if not mpropdef
.is_intro
then
892 msignature
= mpropdef
.mproperty
.intro
.msignature
893 if msignature
== null then return # Skip error
895 # The local signature is adapted to use the local formal types, if any.
896 msignature
= msignature
.resolve_for
(mclassdef
.mclass
.mclass_type
, mclassdef
.bound_mtype
, mmodule
, false)
898 # Check inherited signature arity
899 if param_names
.length
!= msignature
.arity
then
901 if nsig
!= null then node
= nsig
else node
= self
902 modelbuilder
.error
(node
, "Redef error: {mpropdef} redefines {mpropdef.mproperty.intro} with {param_names.length} parameter(s), {msignature.arity} expected. Signature is {mpropdef}{msignature}")
905 else if mpropdef
.mproperty
.is_init
and not mpropdef
.mproperty
.is_new
then
906 # FIXME UGLY: inherit signature from a super-constructor
907 for msupertype
in mclassdef
.supertypes
do
908 msupertype
= msupertype
.anchor_to
(mmodule
, mclassdef
.bound_mtype
)
909 var candidate
= modelbuilder
.try_get_mproperty_by_name2
(self, mmodule
, msupertype
, mpropdef
.mproperty
.name
)
910 if candidate
!= null then
911 if msignature
== null then
912 msignature
= candidate
.intro
.as(MMethodDef).msignature
919 # Inherit the signature
920 if msignature
!= null and param_names
.length
!= param_types
.length
and param_names
.length
== msignature
.arity
and param_types
.length
== 0 then
921 # Parameters are untyped, thus inherit them
922 param_types
= new Array[MType]
923 for mparameter
in msignature
.mparameters
do
924 param_types
.add
(mparameter
.mtype
)
926 vararg_rank
= msignature
.vararg_rank
928 if msignature
!= null and ret_type
== null then
929 ret_type
= msignature
.return_mtype
932 if param_names
.length
!= param_types
.length
then
933 # Some parameters are typed, other parameters are not typed.
934 modelbuilder
.error
(nsig
.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
938 var mparameters
= new Array[MParameter]
939 for i
in [0..param_names
.length
[ do
940 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
941 if nsig
!= null then nsig
.n_params
[i
].mparameter
= mparameter
942 mparameters
.add
(mparameter
)
945 # In `new`-factories, the return type is by default the classtype.
946 if ret_type
== null and mpropdef
.mproperty
.is_new
then ret_type
= mclassdef
.mclass
.mclass_type
948 msignature
= new MSignature(mparameters
, ret_type
)
949 mpropdef
.msignature
= msignature
950 mpropdef
.is_abstract
= self.get_single_annotation
("abstract", modelbuilder
) != null
951 mpropdef
.is_intern
= self.get_single_annotation
("intern", modelbuilder
) != null
952 mpropdef
.is_extern
= self.n_extern_code_block
!= null or self.get_single_annotation
("extern", modelbuilder
) != null
955 var at
= self.get_single_annotation
("lazy", modelbuilder
)
956 if at
!= null then modelbuilder
.error
(at
, "Syntax error: `lazy` must be used on attributes.")
959 redef fun check_signature
(modelbuilder
)
961 var mpropdef
= self.mpropdef
962 if mpropdef
== null then return # Error thus skiped
963 var mclassdef
= mpropdef
.mclassdef
964 var mmodule
= mclassdef
.mmodule
965 var nsig
= self.n_signature
966 var mysignature
= self.mpropdef
.msignature
967 if mysignature
== null then return # Error thus skiped
971 if not nsig
.check_signature
(modelbuilder
, mclassdef
) then
972 self.mpropdef
.msignature
= null # invalidate
973 return # Forward error
977 # Lookup for signature in the precursor
978 # FIXME all precursors should be considered
979 if not mpropdef
.is_intro
then
980 var msignature
= mpropdef
.mproperty
.intro
.msignature
981 if msignature
== null then return
983 var precursor_ret_type
= msignature
.return_mtype
984 var ret_type
= mysignature
.return_mtype
985 if ret_type
!= null and precursor_ret_type
== null then
986 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
990 if mysignature
.arity
> 0 then
991 # Check parameters types
992 for i
in [0..mysignature
.arity
[ do
993 var myt
= mysignature
.mparameters
[i
].mtype
994 var prt
= msignature
.mparameters
[i
].mtype
995 var node
= nsig
.n_params
[i
]
996 if not modelbuilder
.check_sametype
(node
, mmodule
, mclassdef
.bound_mtype
, myt
, prt
) then
997 modelbuilder
.error
(node
, "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt} as in {mpropdef.mproperty.intro}.")
1001 if precursor_ret_type
!= null then
1002 var node
: nullable ANode = null
1003 if nsig
!= null then node
= nsig
.n_type
1004 if node
== null then node
= self
1005 if ret_type
== null then
1006 # Inherit the return type
1007 ret_type
= precursor_ret_type
1008 else if not modelbuilder
.check_subtype
(node
, mmodule
, mclassdef
.bound_mtype
, ret_type
, precursor_ret_type
) then
1009 modelbuilder
.error
(node
, "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type} as in {mpropdef.mproperty.intro}.")
1014 if mysignature
.arity
> 0 then
1015 # Check parameters visibility
1016 for i
in [0..mysignature
.arity
[ do
1017 var nt
= nsig
.n_params
[i
].n_type
1018 if nt
!= null then modelbuilder
.check_visibility
(nt
, nt
.mtype
.as(not null), mpropdef
)
1020 var nt
= nsig
.n_type
1021 if nt
!= null then modelbuilder
.check_visibility
(nt
, nt
.mtype
.as(not null), mpropdef
)
1026 redef class AAttrPropdef
1027 redef type MPROPDEF: MAttributeDef
1029 # Is the node tagged `noinit`?
1032 # Is the node tagged lazy?
1035 # Has the node a default value?
1036 # Could be through `n_expr` or `n_block`
1037 var has_value
= false
1039 # The guard associated to a lazy attribute.
1040 # Because some engines does not have a working `isset`,
1041 # this additional attribute is used to guard the lazy initialization.
1042 # TODO: to remove once isset is correctly implemented
1043 var mlazypropdef
: nullable MAttributeDef
1045 # The associated getter (read accessor) if any
1046 var mreadpropdef
: nullable MMethodDef is writable
1047 # The associated setter (write accessor) if any
1048 var mwritepropdef
: nullable MMethodDef is writable
1050 redef fun build_property
(modelbuilder
, mclassdef
)
1052 var mclass
= mclassdef
.mclass
1054 var name
= nid2
.text
1056 var atabstract
= self.get_single_annotation
("abstract", modelbuilder
)
1057 if atabstract
== null then
1058 if mclass
.kind
== interface_kind
then
1059 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the interface {mclass}.")
1060 else if mclass
.kind
== enum_kind
then
1061 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the enum class {mclass}.")
1062 else if mclass
.kind
== extern_kind
then
1063 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the extern class {mclass}.")
1066 var mprop
= new MAttribute(mclassdef
, "_" + name
, private_visibility
)
1067 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1068 self.mpropdef
= mpropdef
1069 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1073 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, readname
).as(nullable MMethod)
1074 if mreadprop
== null then
1075 var mvisibility
= new_property_visibility
(modelbuilder
, mclassdef
, self.n_visibility
)
1076 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1077 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, n_kwredef
, false, mreadprop
) then return
1079 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, n_kwredef
, true, mreadprop
) then return
1080 check_redef_property_visibility
(modelbuilder
, self.n_visibility
, mreadprop
)
1082 mclassdef
.mprop2npropdef
[mreadprop
] = self
1084 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1085 self.mreadpropdef
= mreadpropdef
1086 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1087 set_doc
(mreadpropdef
, modelbuilder
)
1088 if mpropdef
!= null then mpropdef
.mdoc
= mreadpropdef
.mdoc
1089 if atabstract
!= null then mreadpropdef
.is_abstract
= true
1091 has_value
= n_expr
!= null or n_block
!= null
1093 if atabstract
!= null and has_value
then
1094 modelbuilder
.error
(atabstract
, "Error: `abstract` attributes cannot have an initial value")
1098 var atnoinit
= self.get_single_annotation
("noinit", modelbuilder
)
1099 if atnoinit
== null then atnoinit
= self.get_single_annotation
("noautoinit", modelbuilder
)
1100 if atnoinit
!= null then
1103 modelbuilder
.error
(atnoinit
, "Error: `noautoinit` attributes cannot have an initial value")
1106 if atabstract
!= null then
1107 modelbuilder
.error
(atnoinit
, "Error: `noautoinit` attributes cannot be abstract")
1112 var atlazy
= self.get_single_annotation
("lazy", modelbuilder
)
1113 var atautoinit
= self.get_single_annotation
("autoinit", modelbuilder
)
1114 if atlazy
!= null or atautoinit
!= null then
1115 if atlazy
!= null and atautoinit
!= null then
1116 modelbuilder
.error
(atlazy
, "Error: lazy incompatible with autoinit")
1119 if not has_value
then
1120 if atlazy
!= null then
1121 modelbuilder
.error
(atlazy
, "Error: a lazy attribute needs a value")
1122 else if atautoinit
!= null then
1123 modelbuilder
.error
(atautoinit
, "Error: a autoinit attribute needs a value")
1128 var mlazyprop
= new MAttribute(mclassdef
, "lazy _" + name
, none_visibility
)
1129 var mlazypropdef
= new MAttributeDef(mclassdef
, mlazyprop
, self.location
)
1130 self.mlazypropdef
= mlazypropdef
1133 var atreadonly
= self.get_single_annotation
("readonly", modelbuilder
)
1134 if atreadonly
!= null then
1135 if not has_value
then
1136 modelbuilder
.error
(atreadonly
, "Error: a readonly attribute needs a value")
1138 # No setter, so just leave
1142 var writename
= name
+ "="
1143 var atwritable
= self.get_single_annotation
("writable", modelbuilder
)
1144 if atwritable
!= null then
1145 if not atwritable
.n_args
.is_empty
then
1146 writename
= atwritable
.arg_as_id
(modelbuilder
) or else writename
1149 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, writename
).as(nullable MMethod)
1150 var nwkwredef
: nullable Token = null
1151 if atwritable
!= null then nwkwredef
= atwritable
.n_kwredef
1152 if mwriteprop
== null then
1154 if atwritable
!= null then
1155 mvisibility
= new_property_visibility
(modelbuilder
, mclassdef
, atwritable
.n_visibility
)
1157 mvisibility
= private_visibility
1159 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1160 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, nwkwredef
, false, mwriteprop
) then return
1161 mwriteprop
.deprecation
= mreadprop
.deprecation
1163 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, nwkwredef
or else n_kwredef
, true, mwriteprop
) then return
1164 if atwritable
!= null then
1165 check_redef_property_visibility
(modelbuilder
, atwritable
.n_visibility
, mwriteprop
)
1168 mclassdef
.mprop2npropdef
[mwriteprop
] = self
1170 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1171 self.mwritepropdef
= mwritepropdef
1172 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1173 mwritepropdef
.mdoc
= mreadpropdef
.mdoc
1174 if atabstract
!= null then mwritepropdef
.is_abstract
= true
1177 redef fun build_signature
(modelbuilder
)
1179 var mreadpropdef
= self.mreadpropdef
1180 var mpropdef
= self.mpropdef
1181 if mreadpropdef
== null then return # Error thus skipped
1182 var mclassdef
= mreadpropdef
.mclassdef
1183 var mmodule
= mclassdef
.mmodule
1184 var mtype
: nullable MType = null
1187 var ntype
= self.n_type
1188 if ntype
!= null then
1189 mtype
= modelbuilder
.resolve_mtype_unchecked
(mmodule
, mclassdef
, ntype
, true)
1190 if mtype
== null then return
1193 var inherited_type
: nullable MType = null
1194 # Inherit the type from the getter (usually an abstract getter)
1195 if not mreadpropdef
.is_intro
then
1196 var msignature
= mreadpropdef
.mproperty
.intro
.msignature
1197 if msignature
== null then return # Error, thus skipped
1198 inherited_type
= msignature
.return_mtype
1199 if inherited_type
!= null then
1200 # The inherited type is adapted to use the local formal types, if any.
1201 inherited_type
= inherited_type
.resolve_for
(mclassdef
.mclass
.mclass_type
, mclassdef
.bound_mtype
, mmodule
, false)
1202 if mtype
== null then mtype
= inherited_type
1206 var nexpr
= self.n_expr
1207 if mtype
== null then
1208 if nexpr
!= null then
1209 if nexpr
isa ANewExpr then
1210 mtype
= modelbuilder
.resolve_mtype_unchecked
(mmodule
, mclassdef
, nexpr
.n_type
, true)
1211 else if nexpr
isa AIntExpr then
1212 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Int")
1213 if cla
!= null then mtype
= cla
.mclass_type
1214 else if nexpr
isa AFloatExpr then
1215 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Float")
1216 if cla
!= null then mtype
= cla
.mclass_type
1217 else if nexpr
isa ACharExpr then
1218 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Char")
1219 if cla
!= null then mtype
= cla
.mclass_type
1220 else if nexpr
isa ABoolExpr then
1221 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Bool")
1222 if cla
!= null then mtype
= cla
.mclass_type
1223 else if nexpr
isa ASuperstringExpr then
1224 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1225 if cla
!= null then mtype
= cla
.mclass_type
1226 else if nexpr
isa AStringFormExpr then
1227 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1228 if cla
!= null then mtype
= cla
.mclass_type
1230 modelbuilder
.error
(self, "Error: Untyped attribute {mreadpropdef}. Implicit typing allowed only for literals and new.")
1233 if mtype
== null then return
1235 else if ntype
!= null and inherited_type
== mtype
then
1236 if nexpr
isa ANewExpr then
1237 var xmtype
= modelbuilder
.resolve_mtype_unchecked
(mmodule
, mclassdef
, nexpr
.n_type
, true)
1238 if xmtype
== mtype
then
1239 modelbuilder
.advice
(ntype
, "useless-type", "Warning: useless type definition")
1244 if mtype
== null then
1245 modelbuilder
.error
(self, "Error: Untyped attribute {mreadpropdef}")
1249 if mpropdef
!= null then
1250 mpropdef
.static_mtype
= mtype
1254 var msignature
= new MSignature(new Array[MParameter], mtype
)
1255 mreadpropdef
.msignature
= msignature
1258 var mwritepropdef
= self.mwritepropdef
1259 if mwritepropdef
!= null then
1262 var mparameter
= new MParameter(name
, mtype
, false)
1263 var msignature
= new MSignature([mparameter
], null)
1264 mwritepropdef
.msignature
= msignature
1267 var mlazypropdef
= self.mlazypropdef
1268 if mlazypropdef
!= null then
1269 mlazypropdef
.static_mtype
= modelbuilder
.model
.get_mclasses_by_name
("Bool").first
.mclass_type
1273 redef fun check_signature
(modelbuilder
)
1275 var mpropdef
= self.mpropdef
1276 if mpropdef
== null then return # Error thus skipped
1277 var ntype
= self.n_type
1278 var mtype
= self.mpropdef
.static_mtype
1279 if mtype
== null then return # Error thus skipped
1281 var mclassdef
= mpropdef
.mclassdef
1282 var mmodule
= mclassdef
.mmodule
1285 if ntype
!= null then
1286 if modelbuilder
.resolve_mtype
(mmodule
, mclassdef
, ntype
) == null then return
1289 if nexpr
isa ANewExpr then
1290 if modelbuilder
.resolve_mtype
(mmodule
, mclassdef
, nexpr
.n_type
) == null then return
1293 # Lookup for signature in the precursor
1294 # FIXME all precursors should be considered
1295 if not mpropdef
.is_intro
then
1296 var precursor_type
= mpropdef
.mproperty
.intro
.static_mtype
1297 if precursor_type
== null then return
1299 if mtype
!= precursor_type
then
1300 modelbuilder
.error
(ntype
.as(not null), "Redef Error: Wrong static type. found {mtype}, expected {precursor_type}.")
1305 # Check getter and setter
1306 var meth
= self.mreadpropdef
1307 if meth
!= null then
1308 self.check_method_signature
(modelbuilder
, meth
)
1309 var node
: nullable ANode = ntype
1310 if node
== null then node
= self
1311 modelbuilder
.check_visibility
(node
, mtype
, meth
)
1313 meth
= self.mwritepropdef
1314 if meth
!= null then
1315 self.check_method_signature
(modelbuilder
, meth
)
1316 var node
: nullable ANode = ntype
1317 if node
== null then node
= self
1318 modelbuilder
.check_visibility
(node
, mtype
, meth
)
1322 private fun check_method_signature
(modelbuilder
: ModelBuilder, mpropdef
: MMethodDef)
1324 var mclassdef
= mpropdef
.mclassdef
1325 var mmodule
= mclassdef
.mmodule
1326 var nsig
= self.n_type
1327 var mysignature
= mpropdef
.msignature
1328 if mysignature
== null then return # Error thus skiped
1330 # Lookup for signature in the precursor
1331 # FIXME all precursors should be considered
1332 if not mpropdef
.is_intro
then
1333 var msignature
= mpropdef
.mproperty
.intro
.msignature
1334 if msignature
== null then return
1336 if mysignature
.arity
!= msignature
.arity
then
1338 if nsig
!= null then node
= nsig
else node
= self
1339 modelbuilder
.error
(node
, "Redef Error: {mysignature.arity} parameters found, {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1342 var precursor_ret_type
= msignature
.return_mtype
1343 var ret_type
= mysignature
.return_mtype
1344 if ret_type
!= null and precursor_ret_type
== null then
1346 if nsig
!= null then node
= nsig
else node
= self
1347 modelbuilder
.error
(node
, "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1351 if mysignature
.arity
> 0 then
1352 # Check parameters types
1353 for i
in [0..mysignature
.arity
[ do
1354 var myt
= mysignature
.mparameters
[i
].mtype
1355 var prt
= msignature
.mparameters
[i
].mtype
1357 if nsig
!= null then node
= nsig
else node
= self
1358 if not modelbuilder
.check_sametype
(node
, mmodule
, mclassdef
.bound_mtype
, myt
, prt
) then
1359 modelbuilder
.error
(node
, "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1363 if precursor_ret_type
!= null then
1365 if nsig
!= null then node
= nsig
else node
= self
1366 if ret_type
== null then
1367 # Inherit the return type
1368 ret_type
= precursor_ret_type
1369 else if not modelbuilder
.check_subtype
(node
, mmodule
, mclassdef
.bound_mtype
, ret_type
, precursor_ret_type
) then
1370 modelbuilder
.error
(node
, "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1377 redef class ATypePropdef
1378 redef type MPROPDEF: MVirtualTypeDef
1380 redef fun build_property
(modelbuilder
, mclassdef
)
1382 var name
= self.n_id
.text
1383 var mprop
= modelbuilder
.try_get_mproperty_by_name
(self.n_id
, mclassdef
, name
)
1384 if mprop
== null then
1385 var mvisibility
= new_property_visibility
(modelbuilder
, mclassdef
, self.n_visibility
)
1386 mprop
= new MVirtualTypeProp(mclassdef
, name
, mvisibility
)
1387 for c
in name
.chars
do if c
>= 'a' and c
<= 'z' then
1388 modelbuilder
.warning
(n_id
, "bad-type-name", "Warning: lowercase in the virtual type {name}")
1391 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, self.n_kwredef
, false, mprop
) then return
1393 if not self.check_redef_keyword
(modelbuilder
, mclassdef
, self.n_kwredef
, true, mprop
) then return
1394 assert mprop
isa MVirtualTypeProp
1395 check_redef_property_visibility
(modelbuilder
, self.n_visibility
, mprop
)
1397 mclassdef
.mprop2npropdef
[mprop
] = self
1399 var mpropdef
= new MVirtualTypeDef(mclassdef
, mprop
, self.location
)
1400 self.mpropdef
= mpropdef
1401 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1402 if mpropdef
.is_intro
then
1403 modelbuilder
.toolcontext
.info
("{mpropdef} introduces new type {mprop.full_name}", 4)
1405 modelbuilder
.toolcontext
.info
("{mpropdef} redefines type {mprop.full_name}", 4)
1407 set_doc
(mpropdef
, modelbuilder
)
1409 var atfixed
= get_single_annotation
("fixed", modelbuilder
)
1410 if atfixed
!= null then
1411 mpropdef
.is_fixed
= true
1415 redef fun build_signature
(modelbuilder
)
1417 var mpropdef
= self.mpropdef
1418 if mpropdef
== null then return # Error thus skipped
1419 var mclassdef
= mpropdef
.mclassdef
1420 var mmodule
= mclassdef
.mmodule
1421 var mtype
: nullable MType = null
1423 var ntype
= self.n_type
1424 mtype
= modelbuilder
.resolve_mtype_unchecked
(mmodule
, mclassdef
, ntype
, true)
1425 if mtype
== null then return
1427 mpropdef
.bound
= mtype
1428 # print "{mpropdef}: {mtype}"
1431 redef fun check_signature
(modelbuilder
)
1433 var mpropdef
= self.mpropdef
1434 if mpropdef
== null then return # Error thus skipped
1436 var bound
= mpropdef
.bound
1437 if bound
== null then return # Error thus skipped
1439 modelbuilder
.check_visibility
(n_type
, bound
, mpropdef
)
1441 var mclassdef
= mpropdef
.mclassdef
1442 var mmodule
= mclassdef
.mmodule
1443 var anchor
= mclassdef
.bound_mtype
1445 var ntype
= self.n_type
1446 if modelbuilder
.resolve_mtype
(mmodule
, mclassdef
, ntype
) == null then
1447 mpropdef
.bound
= null
1451 # Check redefinitions
1452 for p
in mpropdef
.mproperty
.lookup_super_definitions
(mmodule
, anchor
) do
1453 var supbound
= p
.bound
1454 if supbound
== null then break # broken super bound, skip error
1456 modelbuilder
.error
(self, "Redef Error: Virtual type {mpropdef.mproperty} is fixed in super-class {p.mclassdef.mclass}")
1459 if p
.mclassdef
.mclass
== mclassdef
.mclass
then
1460 # Still a warning to pass existing bad code
1461 modelbuilder
.warning
(n_type
, "refine-type", "Redef Error: a virtual type cannot be refined.")
1464 if not modelbuilder
.check_subtype
(n_type
, mmodule
, anchor
, bound
, supbound
) then
1465 modelbuilder
.error
(n_type
, "Redef Error: Wrong bound type. Found {bound}, expected a subtype of {supbound}, as in {p}.")