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 # Load nit source files and build the associated model
21 # FIXME split this module into submodules
22 # FIXME add missing error checks
33 redef class ToolContext
35 readable var _opt_path
: OptionArray = new OptionArray("Set include path for loaders (may be used more than once)", "-I", "--path")
37 # Option --only-metamodel
38 readable var _opt_only_metamodel
: OptionBool = new OptionBool("Stop after meta-model processing", "--only-metamodel")
41 readable var _opt_only_parse
: OptionBool = new OptionBool("Only proceed to parse step of loaders", "--only-parse")
46 option_context
.add_option
(opt_path
, opt_only_parse
, opt_only_metamodel
)
50 # A model builder knows how to load nit source files and build the associated model
51 # The important function is `parse_and_build' that does all the job.
52 # The others function can be used for specific tasks
54 # The model where new modules, classes and properties are added
57 # The toolcontext used to control the interaction with the user (getting options and displaying messages)
58 var toolcontext
: ToolContext
60 # Instantiate a modelbuilder for a model and a toolcontext
61 # Important, the options of the toolcontext must be correctly set (parse_option already called)
62 init(model
: Model, toolcontext
: ToolContext)
65 self.toolcontext
= toolcontext
67 # Setup the paths value
68 paths
.append
(toolcontext
.opt_path
.value
)
70 var path_env
= "NIT_PATH".environ
71 if not path_env
.is_empty
then
72 paths
.append
(path_env
.split_with
(':'))
75 path_env
= "NIT_DIR".environ
76 if not path_env
.is_empty
then
77 var libname
= "{path_env}/lib"
78 if libname
.file_exists
then paths
.add
(libname
)
81 var libname
= "{sys.program_name.dirname}/../lib"
82 if libname
.file_exists
then paths
.add
(libname
.simplify_path
)
85 # Load and analyze a bunch of modules.
86 # `modules' can contains filenames or module names.
87 # Imported modules are automatically loaded, builds and analysed.
88 # The result is the corresponding built modules.
89 # Errors and warnings are printed with the toolcontext.
91 # FIXME: Maybe just let the client do the loop (instead of playing with Sequences)
92 fun parse_and_build
(modules
: Sequence[String]): Array[MModule]
95 # Parse and recursively load
96 self.toolcontext
.info
("*** PARSE ***", 1)
97 var mmodules
= new Array[MModule]
99 var nmodule
= self.load_module
(null, a
)
100 if nmodule
== null then continue # Skip error
101 mmodules
.add
(nmodule
.mmodule
.as(not null))
104 self.toolcontext
.info
("*** END PARSE: {time1-time0} ***", 2)
106 self.toolcontext
.check_errors
108 if self.toolcontext
.opt_only_parse
.value
then
109 self.toolcontext
.info
("--only-parse: stop processing", 2)
110 return new Array[MModule]
114 self.toolcontext
.info
("*** BUILD MODEL ***", 1)
115 self.build_all_classes
117 self.toolcontext
.info
("*** END BUILD MODEL: {time2-time1} ***", 2)
119 self.toolcontext
.check_errors
124 # Return a class named `name' visible by the module `mmodule'.
125 # Visibility in modules is correctly handled.
126 # If no such a class exists, then null is returned.
127 # If more than one class exists, then an error on `anode' is displayed and null is returned.
128 # FIXME: add a way to handle class name conflict
129 fun try_get_mclass_by_name
(anode
: ANode, mmodule
: MModule, name
: String): nullable MClass
131 var classes
= model
.get_mclasses_by_name
(name
)
132 if classes
== null then
136 var res
: nullable MClass = null
137 for mclass
in classes
do
138 if not mmodule
.in_importation
<= mclass
.intro_mmodule
then continue
139 if not mmodule
.is_visible
(mclass
.intro_mmodule
, mclass
.visibility
) then continue
143 error
(anode
, "Ambigous class name '{name}'; conflict between {mclass.full_name} and {res.full_name}")
150 # Return a property named `name' on the type `mtype' visible in the module `mmodule'.
151 # Visibility in modules is correctly handled.
152 # Protected properties are returned (it is up to the caller to check and reject protected properties).
153 # If no such a property exists, then null is returned.
154 # If more than one property exists, then an error on `anode' is displayed and null is returned.
155 # FIXME: add a way to handle property name conflict
156 fun try_get_mproperty_by_name2
(anode
: ANode, mmodule
: MModule, mtype
: MType, name
: String): nullable MProperty
158 var props
= self.model
.get_mproperties_by_name
(name
)
159 if props
== null then
163 var cache
= self.try_get_mproperty_by_name2_cache
[mmodule
, mtype
, name
]
164 if cache
!= null then return cache
166 var res
: nullable MProperty = null
167 var ress
: nullable Array[MProperty] = null
168 for mprop
in props
do
169 if not mtype
.has_mproperty
(mmodule
, mprop
) then continue
170 if not mmodule
.is_visible
(mprop
.intro_mclassdef
.mmodule
, mprop
.visibility
) then continue
174 var restype
= res
.intro_mclassdef
.bound_mtype
175 var mproptype
= mprop
.intro_mclassdef
.bound_mtype
176 if restype
.is_subtype
(mmodule
, null, mproptype
) then
178 else if mproptype
.is_subtype
(mmodule
, null, restype
) then
181 if ress
== null then ress
= new Array[MProperty]
187 var restype
= res
.intro_mclassdef
.bound_mtype
189 var mproptype
= mprop
.intro_mclassdef
.bound_mtype
190 if not restype
.is_subtype
(mmodule
, null, mproptype
) then
191 self.error
(anode
, "Ambigous property name '{name}' for {mtype}; conflict between {mprop.full_name} and {res.full_name}")
197 self.try_get_mproperty_by_name2_cache
[mmodule
, mtype
, name
] = res
201 private var try_get_mproperty_by_name2_cache
: HashMap3[MModule, MType, String, nullable MProperty] = new HashMap3[MModule, MType, String, nullable MProperty]
204 # Alias for try_get_mproperty_by_name2(anode, mclassdef.mmodule, mclassdef.mtype, name)
205 fun try_get_mproperty_by_name
(anode
: ANode, mclassdef
: MClassDef, name
: String): nullable MProperty
207 return try_get_mproperty_by_name2
(anode
, mclassdef
.mmodule
, mclassdef
.bound_mtype
, name
)
210 # The list of directories to search for top level modules
211 # The list is initially set with :
212 # * the toolcontext --path option
213 # * the NIT_PATH environment variable
214 # * some heuristics including the NIT_DIR environment variable and the progname of the process
215 # Path can be added (or removed) by the client
216 var paths
: Array[String] = new Array[String]
218 # Get a module by its short name; if required, the module is loaded, parsed and its hierarchies computed.
219 # If `mmodule' is set, then the module search starts from it up to the top level (see `paths');
220 # if `mmodule' is null then the module is searched in the top level only.
221 # If no module exists or there is a name conflict, then an error on `anode' is displayed and null is returned.
222 # FIXME: add a way to handle module name conflict
223 fun get_mmodule_by_name
(anode
: ANode, mmodule
: nullable MModule, name
: String): nullable MModule
225 var origmmodule
= mmodule
226 var modules
= model
.get_mmodules_by_name
(name
)
228 var tries
= new Array[String]
230 var lastmodule
= mmodule
231 while mmodule
!= null do
232 var dirname
= mmodule
.location
.file
.filename
.dirname
234 # Determine the owner
235 var owner
: nullable MModule
236 if dirname
.basename
("") != mmodule
.name
then
237 owner
= mmodule
.direct_owner
242 # First, try the already known nested modules
243 if modules
!= null then
244 for candidate
in modules
do
245 if candidate
.direct_owner
== owner
then
251 # Second, try the directory to find a file
252 var try_file
= dirname
+ "/" + name
+ ".nit"
254 if try_file
.file_exists
then
255 var res
= self.load_module
(owner
, try_file
.simplify_path
)
256 if res
== null then return null # Forward error
257 return res
.mmodule
.as(not null)
260 # Third, try if the requested module is itself an owner
261 try_file
= dirname
+ "/" + name
+ "/" + name
+ ".nit"
262 if try_file
.file_exists
then
263 var res
= self.load_module
(owner
, try_file
.simplify_path
)
264 if res
== null then return null # Forward error
265 return res
.mmodule
.as(not null)
269 mmodule
= mmodule
.direct_owner
272 if modules
!= null then
273 for candidate
in modules
do
274 if candidate
.direct_owner
== null then
280 # Look at some known directories
281 var lookpaths
= self.paths
283 # Look in the directory of the last module also (event if not in the path)
284 if lastmodule
!= null then
285 var dirname
= lastmodule
.location
.file
.filename
.dirname
286 if dirname
.basename
("") == lastmodule
.name
then
287 dirname
= dirname
.dirname
289 if not lookpaths
.has
(dirname
) then
290 lookpaths
= lookpaths
.to_a
291 lookpaths
.add
(dirname
)
295 var candidate
: nullable String = null
296 for dirname
in lookpaths
do
297 var try_file
= (dirname
+ "/" + name
+ ".nit").simplify_path
299 if try_file
.file_exists
then
300 if candidate
== null then
302 else if candidate
!= try_file
then
303 error
(anode
, "Error: conflicting module file for {name}: {candidate} {try_file}")
306 try_file
= (dirname
+ "/" + name
+ "/" + name
+ ".nit").simplify_path
307 if try_file
.file_exists
then
308 if candidate
== null then
310 else if candidate
!= try_file
then
311 error
(anode
, "Error: conflicting module file for {name}: {candidate} {try_file}")
315 if candidate
== null then
316 if origmmodule
!= null then
317 error
(anode
, "Error: cannot find module {name} from {origmmodule}. tried {tries.join(", ")}")
319 error
(anode
, "Error: cannot find module {name}. tried {tries.join(", ")}")
323 var res
= self.load_module
(mmodule
, candidate
)
324 if res
== null then return null # Forward error
325 return res
.mmodule
.as(not null)
328 # Try to load a module using a path.
329 # Display an error if there is a problem (IO / lexer / parser) and return null
330 # Note: usually, you do not need this method, use `get_mmodule_by_name` instead.
331 fun load_module
(owner
: nullable MModule, filename
: String): nullable AModule
333 if not filename
.file_exists
then
334 self.toolcontext
.error
(null, "Error: file {filename} not found.")
338 var x
= if owner
!= null then owner
.to_s
else "."
339 self.toolcontext
.info
("load module {filename} in {x}", 2)
342 var file
= new IFStream.open
(filename
)
343 var lexer
= new Lexer(new SourceFile(filename
, file
))
344 var parser
= new Parser(lexer
)
345 var tree
= parser
.parse
348 # Handle lexer and parser error
349 var nmodule
= tree
.n_base
350 if nmodule
== null then
351 var neof
= tree
.n_eof
352 assert neof
isa AError
353 error
(neof
, neof
.message
)
357 # Check the module name
358 var mod_name
= filename
.basename
(".nit")
359 var decl
= nmodule
.n_moduledecl
361 #warning(nmodule, "Warning: Missing 'module' keyword") #FIXME: NOT YET FOR COMPATIBILITY
363 var decl_name
= decl
.n_name
.n_id
.text
364 if decl_name
!= mod_name
then
365 error
(decl
.n_name
, "Error: module name missmatch; declared {decl_name} file named {mod_name}")
370 var mmodule
= new MModule(model
, owner
, mod_name
, nmodule
.location
)
371 nmodule
.mmodule
= mmodule
372 nmodules
.add
(nmodule
)
373 self.mmodule2nmodule
[mmodule
] = nmodule
375 build_module_importation
(nmodule
)
380 # Analysis the module importation and fill the module_importation_hierarchy
381 private fun build_module_importation
(nmodule
: AModule)
383 if nmodule
.is_importation_done
then return
384 var mmodule
= nmodule
.mmodule
.as(not null)
386 var imported_modules
= new Array[MModule]
387 for aimport
in nmodule
.n_imports
do
389 if not aimport
isa AStdImport then
392 var mod_name
= aimport
.n_name
.n_id
.text
393 var sup
= self.get_mmodule_by_name
(aimport
.n_name
, mmodule
, mod_name
)
394 if sup
== null then continue # Skip error
395 imported_modules
.add
(sup
)
396 var mvisibility
= aimport
.n_visibility
.mvisibility
397 mmodule
.set_visibility_for
(sup
, mvisibility
)
400 var mod_name
= "standard"
401 var sup
= self.get_mmodule_by_name
(nmodule
, null, mod_name
)
402 if sup
!= null then # Skip error
403 imported_modules
.add
(sup
)
404 mmodule
.set_visibility_for
(sup
, public_visibility
)
407 self.toolcontext
.info
("{mmodule} imports {imported_modules.join(", ")}", 3)
408 mmodule
.set_imported_mmodules
(imported_modules
)
409 nmodule
.is_importation_done
= true
412 # All the loaded modules
413 var nmodules
: Array[AModule] = new Array[AModule]
415 # Build the classes of all modules `nmodules'.
416 private fun build_all_classes
418 for nmodule
in self.nmodules
do
419 build_classes
(nmodule
)
423 # Visit the AST and create the MClass objects
424 private fun build_a_mclass
(nmodule
: AModule, nclassdef
: AClassdef)
426 var mmodule
= nmodule
.mmodule
.as(not null)
429 var nkind
: nullable AClasskind
430 var mkind
: MClassKind
431 var nvisibility
: nullable AVisibility
432 var mvisibility
: nullable MVisibility
434 if nclassdef
isa AStdClassdef then
435 name
= nclassdef
.n_id
.text
436 nkind
= nclassdef
.n_classkind
438 nvisibility
= nclassdef
.n_visibility
439 mvisibility
= nvisibility
.mvisibility
440 arity
= nclassdef
.n_formaldefs
.length
441 else if nclassdef
isa ATopClassdef then
444 mkind
= interface_kind
446 mvisibility
= public_visibility
447 else if nclassdef
isa AMainClassdef then
450 mkind
= concrete_kind
452 mvisibility
= public_visibility
457 var mclass
= try_get_mclass_by_name
(nclassdef
, mmodule
, name
)
458 if mclass
== null then
459 mclass
= new MClass(mmodule
, name
, arity
, mkind
, mvisibility
)
460 #print "new class {mclass}"
461 else if nclassdef
isa AStdClassdef and nclassdef
.n_kwredef
== null then
462 error
(nclassdef
, "Redef error: {name} is an imported class. Add the redef keyword to refine it.")
464 else if mclass
.arity
!= arity
then
465 error
(nclassdef
, "Redef error: Formal parameter arity missmatch; got {arity}, expected {mclass.arity}.")
467 else if nkind
!= null and mkind
!= concrete_kind
and mclass
.kind
!= mkind
then
468 error
(nkind
, "Error: refinement changed the kind from a {mclass.kind} to a {mkind}")
469 else if nvisibility
!= null and mvisibility
!= public_visibility
and mclass
.visibility
!= mvisibility
then
470 error
(nvisibility
, "Error: refinement changed the visibility from a {mclass.visibility} to a {mvisibility}")
472 nclassdef
.mclass
= mclass
475 # Visit the AST and create the MClassDef objects
476 private fun build_a_mclassdef
(nmodule
: AModule, nclassdef
: AClassdef)
478 var mmodule
= nmodule
.mmodule
.as(not null)
479 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
480 var mclass
= nclassdef
.mclass
481 if mclass
== null then return # Skip error
482 #var mclassdef = nclassdef.mclassdef.as(not null)
484 var names
= new Array[String]
485 var bounds
= new Array[MType]
486 if nclassdef
isa AStdClassdef and mclass
.arity
> 0 then
487 # Collect formal parameter names
488 for i
in [0..mclass
.arity
[ do
489 var nfd
= nclassdef
.n_formaldefs
[i
]
490 var ptname
= nfd
.n_id
.text
491 if names
.has
(ptname
) then
492 error
(nfd
, "Error: A formal parameter type `{ptname}' already exists")
498 # Revolve bound for formal parameter names
499 for i
in [0..mclass
.arity
[ do
500 var nfd
= nclassdef
.n_formaldefs
[i
]
501 var nfdt
= nfd
.n_type
503 var bound
= resolve_mtype
(nclassdef
, nfdt
)
504 if bound
== null then return # Forward error
505 if bound
.need_anchor
then
507 error
(nfd
, "Error: Formal parameter type `{names[i]}' bounded with a formal parameter type")
511 else if mclass
.mclassdefs
.is_empty
then
512 # No bound, then implicitely bound by nullable Object
513 bounds
.add
(objectclass
.mclass_type
.as_nullable
)
516 bounds
.add
(mclass
.mclassdefs
.first
.bound_mtype
.as(MGenericType).arguments
[i
])
521 var bound_mtype
= mclass
.get_mtype
(bounds
)
522 var mclassdef
= new MClassDef(mmodule
, bound_mtype
, nclassdef
.location
, names
)
523 nclassdef
.mclassdef
= mclassdef
524 self.mclassdef2nclassdef
[mclassdef
] = nclassdef
526 if mclassdef
.is_intro
then
527 self.toolcontext
.info
("{mclassdef} introduces new {mclass.kind} {mclass.full_name}", 3)
529 self.toolcontext
.info
("{mclassdef} refine {mclass.kind} {mclass.full_name}", 3)
533 # Visit the AST and set the super-types of the MClass objects (ie compute the inheritance)
534 private fun build_a_mclassdef_inheritance
(nmodule
: AModule, nclassdef
: AClassdef)
536 var mmodule
= nmodule
.mmodule
.as(not null)
537 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
538 var mclass
= nclassdef
.mclass
.as(not null)
539 var mclassdef
= nclassdef
.mclassdef
.as(not null)
541 var specobject
= true
542 var supertypes
= new Array[MClassType]
543 if nclassdef
isa AStdClassdef then
544 for nsc
in nclassdef
.n_superclasses
do
546 var ntype
= nsc
.n_type
547 var mtype
= resolve_mtype
(nclassdef
, ntype
)
548 if mtype
== null then continue # Skip because of error
549 if not mtype
isa MClassType then
550 error
(ntype
, "Error: supertypes cannot be a formal type")
554 #print "new super : {mclass} < {mtype}"
557 if specobject
and mclass
.name
!= "Object" and objectclass
!= null and mclassdef
.is_intro
then
558 supertypes
.add objectclass
.mclass_type
561 mclassdef
.set_supertypes
(supertypes
)
562 if not supertypes
.is_empty
then self.toolcontext
.info
("{mclassdef} new super-types: {supertypes.join(", ")}", 3)
565 # Check the validity of the specialization heirarchy
566 # FIXME Stub implementation
567 private fun check_supertypes
(nmodule
: AModule, nclassdef
: AClassdef)
569 var mmodule
= nmodule
.mmodule
.as(not null)
570 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
571 var mclass
= nclassdef
.mclass
.as(not null)
572 var mclassdef
= nclassdef
.mclassdef
.as(not null)
575 # Build the classes of the module `nmodule'.
576 # REQUIRE: classes of imported modules are already build. (let `build_all_classes' do the job)
577 private fun build_classes
(nmodule
: AModule)
579 # Force building recursively
580 if nmodule
.build_classes_is_done
then return
581 var mmodule
= nmodule
.mmodule
.as(not null)
582 for imp
in mmodule
.in_importation
.direct_greaters
do
583 build_classes
(mmodule2nmodule
[imp
])
587 for nclassdef
in nmodule
.n_classdefs
do
588 self.build_a_mclass
(nmodule
, nclassdef
)
591 # Create all classdefs
592 for nclassdef
in nmodule
.n_classdefs
do
593 self.build_a_mclassdef
(nmodule
, nclassdef
)
596 for nclassdef
in nmodule
.n_classdefs
do
597 if nclassdef
.mclassdef
== null then return # forward error
600 # Create inheritance on all classdefs
601 for nclassdef
in nmodule
.n_classdefs
do
602 self.build_a_mclassdef_inheritance
(nmodule
, nclassdef
)
605 # TODO: Check that the super-class is not intrusive
607 # TODO: Check that the super-class is not already known (by transitivity)
609 for nclassdef
in nmodule
.n_classdefs
do
610 self.build_properties
(nclassdef
)
613 nmodule
.build_classes_is_done
= true
616 # Register the nmodule associated to each mmodule
617 # FIXME: why not refine the MModule class with a nullable attribute?
618 var mmodule2nmodule
: HashMap[MModule, AModule] = new HashMap[MModule, AModule]
619 # Register the nclassdef associated to each mclassdef
620 # FIXME: why not refine the MClassDef class with a nullable attribute?
621 var mclassdef2nclassdef
: HashMap[MClassDef, AClassdef] = new HashMap[MClassDef, AClassdef]
622 # Register the npropdef associated to each mpropdef
623 # FIXME: why not refine the MPropDef class with a nullable attribute?
624 var mpropdef2npropdef
: HashMap[MPropDef, APropdef] = new HashMap[MPropDef, APropdef]
626 # Build the properties of `nclassdef'.
627 # REQUIRE: all superclasses are built.
628 private fun build_properties
(nclassdef
: AClassdef)
630 # Force building recursively
631 if nclassdef
.build_properties_is_done
then return
632 var mclassdef
= nclassdef
.mclassdef
.as(not null)
633 if mclassdef
.in_hierarchy
== null then return # Skip error
634 for superclassdef
in mclassdef
.in_hierarchy
.direct_greaters
do
635 build_properties
(mclassdef2nclassdef
[superclassdef
])
638 for npropdef
in nclassdef
.n_propdefs
do
639 npropdef
.build_property
(self, nclassdef
)
641 for npropdef
in nclassdef
.n_propdefs
do
642 npropdef
.build_signature
(self, nclassdef
)
644 for npropdef
in nclassdef
.n_propdefs
do
645 npropdef
.check_signature
(self, nclassdef
)
647 process_default_constructors
(nclassdef
)
648 nclassdef
.build_properties_is_done
= true
651 # Introduce or inherit default constructor
652 # This is the last part of `build_properties'.
653 private fun process_default_constructors
(nclassdef
: AClassdef)
655 var mclassdef
= nclassdef
.mclassdef
.as(not null)
657 # Are we a refinement
658 if not mclassdef
.is_intro
then return
660 # Is the class forbid constructors?
661 if not mclassdef
.mclass
.kind
.need_init
then return
663 # Is there already a constructor defined?
664 for mpropdef
in mclassdef
.mpropdefs
do
665 if not mpropdef
isa MMethodDef then continue
666 if mpropdef
.mproperty
.is_init
then return
669 if not nclassdef
isa AStdClassdef then return
671 var mmodule
= nclassdef
.mclassdef
.mmodule
672 # Do we inherit for a constructor?
673 var combine
= new Array[MMethod]
674 var inhc
: nullable MClass = null
675 for st
in mclassdef
.supertypes
do
677 if not c
.kind
.need_init
then continue
678 st
= st
.anchor_to
(mmodule
, nclassdef
.mclassdef
.bound_mtype
)
679 var candidate
= self.try_get_mproperty_by_name2
(nclassdef
, mmodule
, st
, "init").as(nullable MMethod)
680 if candidate
!= null and candidate
.intro
.msignature
.arity
== 0 then
681 combine
.add
(candidate
)
684 var inhc2
= c
.inherit_init_from
685 if inhc2
== null then inhc2
= c
686 if inhc2
== inhc
then continue
688 self.error
(nclassdef
, "Error: Cannot provide a defaut constructor: conflict for {inhc} and {c}")
693 if combine
.is_empty
and inhc
!= null then
694 # TODO: actively inherit the consturctor
695 self.toolcontext
.info
("{mclassdef} inherits all constructors from {inhc}", 3)
696 mclassdef
.mclass
.inherit_init_from
= inhc
699 if not combine
.is_empty
and inhc
!= null then
700 self.error
(nclassdef
, "Error: Cannot provide a defaut constructor: conflict for {combine.join(", ")} and {inhc}")
704 if not combine
.is_empty
then
705 nclassdef
.super_inits
= combine
706 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
707 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
708 var mparameters
= new Array[MParameter]
709 var msignature
= new MSignature(mparameters
, null)
710 mpropdef
.msignature
= msignature
712 nclassdef
.mfree_init
= mpropdef
713 self.toolcontext
.info
("{mclassdef} gets a free empty constructor {mpropdef}{msignature}", 3)
717 # Collect undefined attributes
718 var mparameters
= new Array[MParameter]
719 for npropdef
in nclassdef
.n_propdefs
do
720 if npropdef
isa AAttrPropdef and npropdef
.n_expr
== null then
721 var paramname
= npropdef
.mpropdef
.mproperty
.name
.substring_from
(1)
722 var ret_type
= npropdef
.mpropdef
.static_mtype
723 if ret_type
== null then return
724 var mparameter
= new MParameter(paramname
, ret_type
, false)
725 mparameters
.add
(mparameter
)
729 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
730 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
731 var msignature
= new MSignature(mparameters
, null)
732 mpropdef
.msignature
= msignature
734 nclassdef
.mfree_init
= mpropdef
735 self.toolcontext
.info
("{mclassdef} gets a free constructor for attributes {mpropdef}{msignature}", 3)
738 # Return the static type associated to the node `ntype'.
739 # `classdef' is the context where the call is made (used to understand formal types)
740 # The mmodule used as context is `nclassdef.mmodule'
741 # In case of problem, an error is displayed on `ntype' and null is returned.
742 # FIXME: the name "resolve_mtype" is awful
743 fun resolve_mtype
(nclassdef
: AClassdef, ntype
: AType): nullable MType
745 var name
= ntype
.n_id
.text
746 var mclassdef
= nclassdef
.mclassdef
747 var mmodule
= nclassdef
.parent
.as(AModule).mmodule
.as(not null)
751 if mclassdef
!= null then
752 var prop
= try_get_mproperty_by_name
(ntype
, mclassdef
, name
).as(nullable MVirtualTypeProp)
754 if not ntype
.n_types
.is_empty
then
755 error
(ntype
, "Type error: formal type {name} cannot have formal parameters.")
757 res
= prop
.mvirtualtype
758 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
763 # Check parameter type
764 if mclassdef
!= null and mclassdef
.parameter_names
.has
(name
) then
765 if not ntype
.n_types
.is_empty
then
766 error
(ntype
, "Type error: formal type {name} cannot have formal parameters.")
768 for i
in [0..mclassdef
.parameter_names
.length
[ do
769 if mclassdef
.parameter_names
[i
] == name
then
770 res
= mclassdef
.mclass
.mclass_type
.as(MGenericType).arguments
[i
]
771 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
779 var mclass
= try_get_mclass_by_name
(ntype
, mmodule
, name
)
780 if mclass
!= null then
781 var arity
= ntype
.n_types
.length
782 if arity
!= mclass
.arity
then
784 error
(ntype
, "Type error: '{name}' is a generic class.")
785 else if mclass
.arity
== 0 then
786 error
(ntype
, "Type error: '{name}' is not a generic class.")
788 error
(ntype
, "Type error: '{name}' has {mclass.arity} parameters ({arity} are provided).")
793 res
= mclass
.mclass_type
794 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
797 var mtypes
= new Array[MType]
798 for nt
in ntype
.n_types
do
799 var mt
= resolve_mtype
(nclassdef
, nt
)
800 if mt
== null then return null # Forward error
803 res
= mclass
.get_mtype
(mtypes
)
804 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
809 # If everything fail, then give up :(
810 error
(ntype
, "Type error: class {name} not found in module {mmodule}.")
814 # Helper function to display an error on a node.
815 # Alias for `self.toolcontext.error(n.hot_location, text)'
816 fun error
(n
: ANode, text
: String)
818 self.toolcontext
.error
(n
.hot_location
, text
)
821 # Helper function to display a warning on a node.
822 # Alias for: `self.toolcontext.warning(n.hot_location, text)'
823 fun warning
(n
: ANode, text
: String)
825 self.toolcontext
.warning
(n
.hot_location
, text
)
828 # Force to get the primitive method named `name' on the type `recv' or do a fatal error on `n'
829 fun force_get_primitive_method
(n
: ANode, name
: String, recv
: MType, mmodule
: MModule): MMethod
831 var res
= mmodule
.try_get_primitive_method
(name
, recv
)
833 self.toolcontext
.fatal_error
(n
.hot_location
, "Fatal Error: {recv} must have a property named {name}.")
841 # The associated MModule once build by a `ModelBuilder'
842 var mmodule
: nullable MModule
843 # Flag that indicate if the importation is already completed
844 var is_importation_done
: Bool = false
845 # Flag that indicate if the class and prop building is already completed
846 var build_classes_is_done
: Bool = false
850 # The class whose self inherit all the constructors.
851 # FIXME: this is needed to implement the crazy constructor mixin thing of the of old compiler. We need to think what to do with since this cannot stay in the modelbuilder
852 var inherit_init_from
: nullable MClass = null
855 redef class AClassdef
856 # The associated MClass once build by a `ModelBuilder'
857 var mclass
: nullable MClass
858 # The associated MClassDef once build by a `ModelBuilder'
859 var mclassdef
: nullable MClassDef
860 var build_properties_is_done
: Bool = false
861 # The list of super-constructor to call at the start of the free constructor
862 # FIXME: this is needed to implement the crazy constructor thing of the of old compiler. We need to think what to do with since this cannot stay in the modelbuilder
863 var super_inits
: nullable Collection[MMethod] = null
865 # The free init (implicitely constructed by the class if required)
866 var mfree_init
: nullable MMethodDef = null
869 redef class AClasskind
870 # The class kind associated with the AST node class
871 private fun mkind
: MClassKind is abstract
873 redef class AConcreteClasskind
874 redef fun mkind
do return concrete_kind
876 redef class AAbstractClasskind
877 redef fun mkind
do return abstract_kind
879 redef class AInterfaceClasskind
880 redef fun mkind
do return interface_kind
882 redef class AEnumClasskind
883 redef fun mkind
do return enum_kind
885 redef class AExternClasskind
886 redef fun mkind
do return extern_kind
889 redef class AVisibility
890 # The visibility level associated with the AST node class
891 private fun mvisibility
: MVisibility is abstract
893 redef class AIntrudeVisibility
894 redef fun mvisibility
do return intrude_visibility
896 redef class APublicVisibility
897 redef fun mvisibility
do return public_visibility
899 redef class AProtectedVisibility
900 redef fun mvisibility
do return protected_visibility
902 redef class APrivateVisibility
903 redef fun mvisibility
do return private_visibility
910 # Join the text of all tokens
911 # Used to get the 'real name' of method definitions.
912 fun collect_text
: String
914 var v
= new TextCollectorVisitor
921 private class TextCollectorVisitor
923 var text
: String = ""
926 if n
isa Token then text
+= n
.text
932 private fun build_property
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
935 private fun build_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
938 private fun check_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
941 private fun new_property_visibility
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, nvisibility
: nullable AVisibility): MVisibility
943 var mvisibility
= public_visibility
944 if nvisibility
!= null then mvisibility
= nvisibility
.mvisibility
945 if nclassdef
.mclassdef
.mclass
.visibility
== private_visibility
then
946 if mvisibility
== protected_visibility
then
947 assert nvisibility
!= null
948 modelbuilder
.error
(nvisibility
, "Error: The only legal visibility for properties in a private class is private.")
949 else if mvisibility
== private_visibility
then
950 assert nvisibility
!= null
952 # modelbuilder.warning(nvisibility, "Warning: private is unrequired since the only legal visibility for properties in a private class is private.")
954 mvisibility
= private_visibility
959 private fun check_redef_property_visibility
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, nvisibility
: nullable AVisibility, mprop
: MProperty)
961 if nvisibility
== null then return
962 var mvisibility
= nvisibility
.mvisibility
963 if mvisibility
!= mprop
.visibility
and mvisibility
!= public_visibility
then
964 modelbuilder
.error
(nvisibility
, "Error: redefinition changed the visibility from a {mprop.visibility} to a {mvisibility}")
968 private fun check_redef_keyword
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, kwredef
: nullable Token, need_redef
: Bool, mprop
: MProperty)
970 if kwredef
== null then
972 modelbuilder
.error
(self, "Redef error: {nclassdef.mclassdef.mclass}::{mprop.name} is an inherited property. To redefine it, add the redef keyword.")
975 if not need_redef
then
976 modelbuilder
.error
(self, "Error: No property {nclassdef.mclassdef.mclass}::{mprop.name} is inherited. Remove the redef keyword to define a new property.")
983 redef class ASignature
984 # Is the model builder has correctly visited the signature
985 var is_visited
= false
986 # Names of parameters from the AST
987 # REQUIRE: is_visited
988 var param_names
= new Array[String]
989 # Types of parameters from the AST
990 # REQUIRE: is_visited
991 var param_types
= new Array[MType]
992 # Rank of the vararg (of -1 if none)
993 # REQUIRE: is_visited
994 var vararg_rank
: Int = -1
996 var ret_type
: nullable MType = null
998 # Visit and fill information about a signature
999 private fun visit_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef): Bool
1001 var param_names
= self.param_names
1002 var param_types
= self.param_types
1003 for np
in self.n_params
do
1004 param_names
.add
(np
.n_id
.text
)
1005 var ntype
= np
.n_type
1006 if ntype
!= null then
1007 var mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1008 if mtype
== null then return false # Skip error
1009 for i
in [0..param_names
.length-param_types
.length
[ do
1010 param_types
.add
(mtype
)
1012 if np
.n_dotdotdot
!= null then
1013 if self.vararg_rank
!= -1 then
1014 modelbuilder
.error
(np
, "Error: {param_names[self.vararg_rank]} is already a vararg")
1017 self.vararg_rank
= param_names
.length
- 1
1022 var ntype
= self.n_type
1023 if ntype
!= null then
1024 self.ret_type
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1025 if self.ret_type
== null then return false # Skip errir
1028 for nclosure
in self.n_closure_decls
do
1029 if not nclosure
.n_signature
.visit_signature
(modelbuilder
, nclassdef
) then return false
1032 self.is_visited
= true
1036 # Build a visited signature
1037 fun build_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef): nullable MSignature
1039 if param_names
.length
!= param_types
.length
then
1040 # Some parameters are typed, other parameters are not typed.
1041 modelbuilder
.error
(self.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
1045 var mparameters
= new Array[MParameter]
1046 for i
in [0..param_names
.length
[ do
1047 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
1048 mparameters
.add
(mparameter
)
1051 var msignature
= new MSignature(mparameters
, ret_type
)
1056 redef class AMethPropdef
1057 # The associated MMethodDef once build by a `ModelBuilder'
1058 var mpropdef
: nullable MMethodDef
1060 # The associated super init if any
1061 var super_init
: nullable MMethod
1062 redef fun build_property
(modelbuilder
, nclassdef
)
1064 var is_init
= self isa AInitPropdef
1065 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1067 var amethodid
= self.n_methid
1068 var name_node
: ANode
1069 if amethodid
== null then
1070 if self isa AMainMethPropdef then
1073 else if self isa AConcreteInitPropdef then
1075 name_node
= self.n_kwinit
1076 else if self isa AExternInitPropdef then
1078 name_node
= self.n_kwnew
1082 else if amethodid
isa AIdMethid then
1083 name
= amethodid
.n_id
.text
1084 name_node
= amethodid
1086 # operator, bracket or assign
1087 name
= amethodid
.collect_text
1088 name_node
= amethodid
1090 if name
== "-" and self.n_signature
.n_params
.length
== 0 then
1095 var mprop
: nullable MMethod = null
1096 if not is_init
or n_kwredef
!= null then mprop
= modelbuilder
.try_get_mproperty_by_name
(name_node
, mclassdef
, name
).as(nullable MMethod)
1097 if mprop
== null then
1098 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1099 mprop
= new MMethod(mclassdef
, name
, mvisibility
)
1100 mprop
.is_init
= is_init
1101 mprop
.is_new
= self isa AExternInitPropdef
1102 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, false, mprop
)
1104 if n_kwredef
== null then
1105 if self isa AMainMethPropdef then
1108 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, true, mprop
)
1111 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1114 var mpropdef
= new MMethodDef(mclassdef
, mprop
, self.location
)
1116 self.mpropdef
= mpropdef
1117 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1118 if mpropdef
.is_intro
then
1119 modelbuilder
.toolcontext
.info
("{mpropdef} introduces new method {mprop.full_name}", 3)
1121 modelbuilder
.toolcontext
.info
("{mpropdef} redefines method {mprop.full_name}", 3)
1125 redef fun build_signature
(modelbuilder
, nclassdef
)
1127 var mpropdef
= self.mpropdef
1128 if mpropdef
== null then return # Error thus skiped
1129 var mmodule
= mpropdef
.mclassdef
.mmodule
1130 var nsig
= self.n_signature
1132 # Retrieve info from the signature AST
1133 var param_names
= new Array[String] # Names of parameters from the AST
1134 var param_types
= new Array[MType] # Types of parameters from the AST
1135 var vararg_rank
= -1
1136 var ret_type
: nullable MType = null # Return type from the AST
1137 if nsig
!= null then
1138 if not nsig
.visit_signature
(modelbuilder
, nclassdef
) then return
1139 param_names
= nsig
.param_names
1140 param_types
= nsig
.param_types
1141 vararg_rank
= nsig
.vararg_rank
1142 ret_type
= nsig
.ret_type
1145 # Look for some signature to inherit
1146 # FIXME: do not inherit from the intro, but from the most specific
1147 var msignature
: nullable MSignature = null
1148 if not mpropdef
.is_intro
then
1149 msignature
= mpropdef
.mproperty
.intro
.msignature
1150 if msignature
== null then return # Skip error
1152 # Check inherited signature arity
1153 if param_names
.length
!= msignature
.arity
then
1155 if nsig
!= null then node
= nsig
else node
= self
1156 modelbuilder
.error
(node
, "Redef error: {mpropdef} redefines {mpropdef.mproperty.intro} with {param_names.length} parameter(s), {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1159 else if mpropdef
.mproperty
.is_init
then
1160 # FIXME UGLY: inherit signature from a super-constructor
1161 for msupertype
in nclassdef
.mclassdef
.supertypes
do
1162 msupertype
= msupertype
.anchor_to
(mmodule
, nclassdef
.mclassdef
.bound_mtype
)
1163 var candidate
= modelbuilder
.try_get_mproperty_by_name2
(self, mmodule
, msupertype
, mpropdef
.mproperty
.name
)
1164 if candidate
!= null then
1165 if msignature
== null then
1166 msignature
= candidate
.intro
.as(MMethodDef).msignature
1173 # Inherit the signature
1174 if msignature
!= null and param_names
.length
!= param_types
.length
and param_names
.length
== msignature
.arity
and param_types
.length
== 0 then
1175 # Parameters are untyped, thus inherit them
1176 param_types
= new Array[MType]
1177 for mparameter
in msignature
.mparameters
do
1178 param_types
.add
(mparameter
.mtype
)
1180 vararg_rank
= msignature
.vararg_rank
1182 if msignature
!= null and ret_type
== null then
1183 ret_type
= msignature
.return_mtype
1186 if param_names
.length
!= param_types
.length
then
1187 # Some parameters are typed, other parameters are not typed.
1188 modelbuilder
.error
(nsig
.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
1192 var mparameters
= new Array[MParameter]
1193 for i
in [0..param_names
.length
[ do
1194 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
1195 mparameters
.add
(mparameter
)
1198 msignature
= new MSignature(mparameters
, ret_type
)
1199 mpropdef
.msignature
= msignature
1201 if nsig
!= null then
1202 for nclosure
in nsig
.n_closure_decls
do
1203 var clos_signature
= nclosure
.n_signature
.build_signature
(modelbuilder
, nclassdef
)
1204 if clos_signature
== null then return
1205 var mparameter
= new MParameter(nclosure
.n_id
.text
, clos_signature
, false)
1206 msignature
.mclosures
.add
(mparameter
)
1212 redef fun check_signature
(modelbuilder
, nclassdef
)
1214 var mpropdef
= self.mpropdef
1215 if mpropdef
== null then return # Error thus skiped
1216 var mmodule
= mpropdef
.mclassdef
.mmodule
1217 var nsig
= self.n_signature
1218 var mysignature
= self.mpropdef
.msignature
1219 if mysignature
== null then return # Error thus skiped
1221 # Lookup for signature in the precursor
1222 # FIXME all precursors should be considered
1223 if not mpropdef
.is_intro
then
1224 var msignature
= mpropdef
.mproperty
.intro
.msignature
1225 if msignature
== null then return
1227 var precursor_ret_type
= msignature
.return_mtype
1228 var ret_type
= mysignature
.return_mtype
1229 if ret_type
!= null and precursor_ret_type
== null then
1230 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1234 if mysignature
.arity
> 0 then
1235 # Check parameters types
1236 for i
in [0..mysignature
.arity
[ do
1237 var myt
= mysignature
.mparameters
[i
].mtype
1238 var prt
= msignature
.mparameters
[i
].mtype
1239 if not myt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, prt
) and
1240 not prt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, myt
) then
1241 modelbuilder
.error
(nsig
.n_params
[i
], "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1245 if precursor_ret_type
!= null then
1246 if ret_type
== null then
1247 # Inherit the return type
1248 ret_type
= precursor_ret_type
1249 else if not ret_type
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, precursor_ret_type
) then
1250 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1257 redef class AAttrPropdef
1258 # The associated MAttributeDef once build by a `ModelBuilder'
1259 var mpropdef
: nullable MAttributeDef
1260 # The associated getter (read accessor) if any
1261 var mreadpropdef
: nullable MMethodDef
1262 # The associated setter (write accessor) if any
1263 var mwritepropdef
: nullable MMethodDef
1264 redef fun build_property
(modelbuilder
, nclassdef
)
1266 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1267 var mclass
= mclassdef
.mclass
1270 if self.n_id
!= null then
1271 name
= self.n_id
.text
1273 name
= self.n_id2
.text
1276 if mclass
.kind
== interface_kind
or mclassdef
.mclass
.kind
== enum_kind
then
1277 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the interface {mclass}.")
1278 else if mclass
.kind
== enum_kind
then
1279 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the enum class {mclass}.")
1284 # Old attribute style
1285 var mprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, name
)
1286 if mprop
== null then
1287 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1288 mprop
= new MAttribute(mclassdef
, name
, mvisibility
)
1289 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, false, mprop
)
1291 assert mprop
isa MAttribute
1292 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1293 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, true, mprop
)
1295 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1296 self.mpropdef
= mpropdef
1297 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1299 var nreadable
= self.n_readable
1300 if nreadable
!= null then
1301 var readname
= name
.substring_from
(1)
1302 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, readname
).as(nullable MMethod)
1303 if mreadprop
== null then
1304 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nreadable
.n_visibility
)
1305 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1306 self.check_redef_keyword
(modelbuilder
, nclassdef
, nreadable
.n_kwredef
, false, mreadprop
)
1308 self.check_redef_keyword
(modelbuilder
, nclassdef
, nreadable
.n_kwredef
, true, mreadprop
)
1309 check_redef_property_visibility
(modelbuilder
, nclassdef
, nreadable
.n_visibility
, mreadprop
)
1311 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1312 self.mreadpropdef
= mreadpropdef
1313 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1316 var nwritable
= self.n_writable
1317 if nwritable
!= null then
1318 var writename
= name
.substring_from
(1) + "="
1319 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, writename
).as(nullable MMethod)
1320 if mwriteprop
== null then
1321 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
)
1322 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1323 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwritable
.n_kwredef
, false, mwriteprop
)
1325 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwritable
.n_kwredef
, true, mwriteprop
)
1326 check_redef_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
, mwriteprop
)
1328 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1329 self.mwritepropdef
= mwritepropdef
1330 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1333 # New attribute style
1334 var nid2
= self.n_id2
.as(not null)
1335 var mprop
= new MAttribute(mclassdef
, "@" + name
, none_visibility
)
1336 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1337 self.mpropdef
= mpropdef
1338 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1341 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, readname
).as(nullable MMethod)
1342 if mreadprop
== null then
1343 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1344 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1345 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, false, mreadprop
)
1347 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, true, mreadprop
)
1348 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mreadprop
)
1350 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1351 self.mreadpropdef
= mreadpropdef
1352 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1354 var writename
= name
+ "="
1355 var nwritable
= self.n_writable
1356 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, writename
).as(nullable MMethod)
1357 var nwkwredef
: nullable Token = null
1358 if nwritable
!= null then nwkwredef
= nwritable
.n_kwredef
1359 if mwriteprop
== null then
1361 if nwritable
!= null then
1362 mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
)
1364 mvisibility
= private_visibility
1366 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1367 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwkwredef
, false, mwriteprop
)
1369 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwkwredef
, true, mwriteprop
)
1370 if nwritable
!= null then
1371 check_redef_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
, mwriteprop
)
1374 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1375 self.mwritepropdef
= mwritepropdef
1376 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1380 redef fun build_signature
(modelbuilder
, nclassdef
)
1382 var mpropdef
= self.mpropdef
1383 if mpropdef
== null then return # Error thus skiped
1384 var mmodule
= mpropdef
.mclassdef
.mmodule
1385 var mtype
: nullable MType = null
1387 var ntype
= self.n_type
1388 if ntype
!= null then
1389 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1390 if mtype
== null then return
1393 if mtype
== null then
1394 var nexpr
= self.n_expr
1395 if nexpr
!= null then
1396 if nexpr
isa ANewExpr then
1397 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, nexpr
.n_type
)
1398 else if nexpr
isa AIntExpr then
1399 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Int")
1400 if cla
!= null then mtype
= cla
.mclass_type
1401 else if nexpr
isa AFloatExpr then
1402 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Float")
1403 if cla
!= null then mtype
= cla
.mclass_type
1404 else if nexpr
isa ACharExpr then
1405 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Char")
1406 if cla
!= null then mtype
= cla
.mclass_type
1407 else if nexpr
isa ABoolExpr then
1408 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Bool")
1409 if cla
!= null then mtype
= cla
.mclass_type
1410 else if nexpr
isa ASuperstringExpr then
1411 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1412 if cla
!= null then mtype
= cla
.mclass_type
1413 else if nexpr
isa AStringFormExpr then
1414 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1415 if cla
!= null then mtype
= cla
.mclass_type
1417 modelbuilder
.error
(self, "Error: Untyped attribute {mpropdef}. Implicit typing allowed only for literals and new.")
1421 modelbuilder
.error
(self, "Error: Untyped attribute {mpropdef}")
1425 if mtype
== null then return
1427 mpropdef
.static_mtype
= mtype
1429 var mreadpropdef
= self.mreadpropdef
1430 if mreadpropdef
!= null then
1431 var msignature
= new MSignature(new Array[MParameter], mtype
)
1432 mreadpropdef
.msignature
= msignature
1435 var msritepropdef
= self.mwritepropdef
1436 if mwritepropdef
!= null then
1438 if n_id
!= null then
1439 name
= n_id
.text
.substring_from
(1)
1443 var mparameter
= new MParameter(name
, mtype
, false)
1444 var msignature
= new MSignature([mparameter
], null)
1445 mwritepropdef
.msignature
= msignature
1449 redef fun check_signature
(modelbuilder
, nclassdef
)
1451 var mpropdef
= self.mpropdef
1452 if mpropdef
== null then return # Error thus skiped
1453 var mmodule
= mpropdef
.mclassdef
.mmodule
1454 var ntype
= self.n_type
1455 var mtype
= self.mpropdef
.static_mtype
1456 if mtype
== null then return # Error thus skiped
1458 # Lookup for signature in the precursor
1459 # FIXME all precursors should be considered
1460 if not mpropdef
.is_intro
then
1461 var precursor_type
= mpropdef
.mproperty
.intro
.static_mtype
1462 if precursor_type
== null then return
1464 if mtype
!= precursor_type
then
1465 modelbuilder
.error
(ntype
.as(not null), "Redef Error: Wrong static type. found {mtype}, expected {precursor_type}.")
1470 # Check getter and setter
1471 var meth
= self.mreadpropdef
1472 if meth
!= null then self.check_method_signature
(modelbuilder
, nclassdef
, meth
)
1473 meth
= self.mwritepropdef
1474 if meth
!= null then self.check_method_signature
(modelbuilder
, nclassdef
, meth
)
1477 private fun check_method_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, mpropdef
: MMethodDef)
1479 var mmodule
= mpropdef
.mclassdef
.mmodule
1480 var nsig
= self.n_type
1481 var mysignature
= mpropdef
.msignature
1482 if mysignature
== null then return # Error thus skiped
1484 # Lookup for signature in the precursor
1485 # FIXME all precursors should be considered
1486 if not mpropdef
.is_intro
then
1487 var msignature
= mpropdef
.mproperty
.intro
.msignature
1488 if msignature
== null then return
1490 if mysignature
.arity
!= msignature
.arity
then
1492 if nsig
!= null then node
= nsig
else node
= self
1493 modelbuilder
.error
(node
, "Redef Error: {mysignature.arity} parameters found, {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1496 var precursor_ret_type
= msignature
.return_mtype
1497 var ret_type
= mysignature
.return_mtype
1498 if ret_type
!= null and precursor_ret_type
== null then
1500 if nsig
!= null then node
= nsig
else node
= self
1501 modelbuilder
.error
(node
, "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1505 if mysignature
.arity
> 0 then
1506 # Check parameters types
1507 for i
in [0..mysignature
.arity
[ do
1508 var myt
= mysignature
.mparameters
[i
].mtype
1509 var prt
= msignature
.mparameters
[i
].mtype
1510 if not myt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, prt
) and
1511 not prt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, myt
) then
1513 if nsig
!= null then node
= nsig
else node
= self
1514 modelbuilder
.error
(node
, "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1518 if precursor_ret_type
!= null then
1519 if ret_type
== null then
1520 # Inherit the return type
1521 ret_type
= precursor_ret_type
1522 else if not ret_type
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, precursor_ret_type
) then
1524 if nsig
!= null then node
= nsig
else node
= self
1525 modelbuilder
.error
(node
, "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1532 redef class ATypePropdef
1533 # The associated MVirtualTypeDef once build by a `ModelBuilder'
1534 var mpropdef
: nullable MVirtualTypeDef
1535 redef fun build_property
(modelbuilder
, nclassdef
)
1537 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1538 var name
= self.n_id
.text
1539 var mprop
= modelbuilder
.try_get_mproperty_by_name
(self.n_id
, mclassdef
, name
)
1540 if mprop
== null then
1541 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1542 mprop
= new MVirtualTypeProp(mclassdef
, name
, mvisibility
)
1543 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, false, mprop
)
1545 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, true, mprop
)
1546 assert mprop
isa MVirtualTypeProp
1547 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1549 var mpropdef
= new MVirtualTypeDef(mclassdef
, mprop
, self.location
)
1550 self.mpropdef
= mpropdef
1553 redef fun build_signature
(modelbuilder
, nclassdef
)
1555 var mpropdef
= self.mpropdef
1556 if mpropdef
== null then return # Error thus skiped
1557 var mmodule
= mpropdef
.mclassdef
.mmodule
1558 var mtype
: nullable MType = null
1560 var ntype
= self.n_type
1561 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1562 if mtype
== null then return
1564 mpropdef
.bound
= mtype
1565 # print "{mpropdef}: {mtype}"
1568 redef fun check_signature
(modelbuilder
, nclassdef
)
1570 var bound
= self.mpropdef
.bound
1572 # Fast case: the bound is not a formal type
1573 if not bound
isa MVirtualType then return
1575 var mmodule
= nclassdef
.mclassdef
.mmodule
1576 var anchor
= nclassdef
.mclassdef
.bound_mtype
1578 # Slow case: progress on each resolution until: (i) we loop, or (ii) we found a non formal type
1579 var seen
= [self.mpropdef
.mproperty
.mvirtualtype
]
1581 if seen
.has
(bound
) then
1583 modelbuilder
.error
(self, "Error: circularity of virtual type definition: {seen.join(" -> ")}")
1587 var next
= bound
.lookup_bound
(mmodule
, anchor
)
1588 if not next
isa MVirtualType then return