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
.as(not null)
481 #var mclassdef = nclassdef.mclassdef.as(not null)
483 var names
= new Array[String]
484 var bounds
= new Array[MType]
485 if nclassdef
isa AStdClassdef and mclass
.arity
> 0 then
486 # Collect formal parameter names
487 for i
in [0..mclass
.arity
[ do
488 var nfd
= nclassdef
.n_formaldefs
[i
]
489 var ptname
= nfd
.n_id
.text
490 if names
.has
(ptname
) then
491 error
(nfd
, "Error: A formal parameter type `{ptname}' already exists")
497 # Revolve bound for formal parameter names
498 for i
in [0..mclass
.arity
[ do
499 var nfd
= nclassdef
.n_formaldefs
[i
]
500 var nfdt
= nfd
.n_type
502 var bound
= resolve_mtype
(nclassdef
, nfdt
)
503 if bound
== null then return # Forward error
504 if bound
.need_anchor
then
506 error
(nfd
, "Error: Formal parameter type `{names[i]}' bounded with a formal parameter type")
510 else if mclass
.mclassdefs
.is_empty
then
511 # No bound, then implicitely bound by nullable Object
512 bounds
.add
(objectclass
.mclass_type
.as_nullable
)
515 bounds
.add
(mclass
.mclassdefs
.first
.bound_mtype
.as(MGenericType).arguments
[i
])
520 var bound_mtype
= mclass
.get_mtype
(bounds
)
521 var mclassdef
= new MClassDef(mmodule
, bound_mtype
, nclassdef
.location
, names
)
522 nclassdef
.mclassdef
= mclassdef
523 self.mclassdef2nclassdef
[mclassdef
] = nclassdef
525 if mclassdef
.is_intro
then
526 self.toolcontext
.info
("{mclassdef} introduces new {mclass.kind} {mclass.full_name}", 3)
528 self.toolcontext
.info
("{mclassdef} refine {mclass.kind} {mclass.full_name}", 3)
532 # Visit the AST and set the super-types of the MClass objects (ie compute the inheritance)
533 private fun build_a_mclassdef_inheritance
(nmodule
: AModule, nclassdef
: AClassdef)
535 var mmodule
= nmodule
.mmodule
.as(not null)
536 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
537 var mclass
= nclassdef
.mclass
.as(not null)
538 var mclassdef
= nclassdef
.mclassdef
.as(not null)
540 var specobject
= true
541 var supertypes
= new Array[MClassType]
542 if nclassdef
isa AStdClassdef then
543 for nsc
in nclassdef
.n_superclasses
do
545 var ntype
= nsc
.n_type
546 var mtype
= resolve_mtype
(nclassdef
, ntype
)
547 if mtype
== null then continue # Skip because of error
548 if not mtype
isa MClassType then
549 error
(ntype
, "Error: supertypes cannot be a formal type")
553 #print "new super : {mclass} < {mtype}"
556 if specobject
and mclass
.name
!= "Object" and objectclass
!= null and mclassdef
.is_intro
then
557 supertypes
.add objectclass
.mclass_type
560 mclassdef
.set_supertypes
(supertypes
)
561 if not supertypes
.is_empty
then self.toolcontext
.info
("{mclassdef} new super-types: {supertypes.join(", ")}", 3)
564 # Check the validity of the specialization heirarchy
565 # FIXME Stub implementation
566 private fun check_supertypes
(nmodule
: AModule, nclassdef
: AClassdef)
568 var mmodule
= nmodule
.mmodule
.as(not null)
569 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
570 var mclass
= nclassdef
.mclass
.as(not null)
571 var mclassdef
= nclassdef
.mclassdef
.as(not null)
574 # Build the classes of the module `nmodule'.
575 # REQUIRE: classes of imported modules are already build. (let `build_all_classes' do the job)
576 private fun build_classes
(nmodule
: AModule)
578 # Force building recursively
579 if nmodule
.build_classes_is_done
then return
580 var mmodule
= nmodule
.mmodule
.as(not null)
581 for imp
in mmodule
.in_importation
.direct_greaters
do
582 build_classes
(mmodule2nmodule
[imp
])
586 for nclassdef
in nmodule
.n_classdefs
do
587 self.build_a_mclass
(nmodule
, nclassdef
)
590 # Create all classdefs
591 for nclassdef
in nmodule
.n_classdefs
do
592 self.build_a_mclassdef
(nmodule
, nclassdef
)
595 # Create inheritance on all classdefs
596 for nclassdef
in nmodule
.n_classdefs
do
597 self.build_a_mclassdef_inheritance
(nmodule
, nclassdef
)
600 # TODO: Check that the super-class is not intrusive
602 # TODO: Check that the super-class is not already known (by transitivity)
604 for nclassdef
in nmodule
.n_classdefs
do
605 self.build_properties
(nclassdef
)
608 nmodule
.build_classes_is_done
= true
611 # Register the nmodule associated to each mmodule
612 # FIXME: why not refine the MModule class with a nullable attribute?
613 var mmodule2nmodule
: HashMap[MModule, AModule] = new HashMap[MModule, AModule]
614 # Register the nclassdef associated to each mclassdef
615 # FIXME: why not refine the MClassDef class with a nullable attribute?
616 var mclassdef2nclassdef
: HashMap[MClassDef, AClassdef] = new HashMap[MClassDef, AClassdef]
617 # Register the npropdef associated to each mpropdef
618 # FIXME: why not refine the MPropDef class with a nullable attribute?
619 var mpropdef2npropdef
: HashMap[MPropDef, APropdef] = new HashMap[MPropDef, APropdef]
621 # Build the properties of `nclassdef'.
622 # REQUIRE: all superclasses are built.
623 private fun build_properties
(nclassdef
: AClassdef)
625 # Force building recursively
626 if nclassdef
.build_properties_is_done
then return
627 var mclassdef
= nclassdef
.mclassdef
.as(not null)
628 if mclassdef
.in_hierarchy
== null then return # Skip error
629 for superclassdef
in mclassdef
.in_hierarchy
.direct_greaters
do
630 build_properties
(mclassdef2nclassdef
[superclassdef
])
633 for npropdef
in nclassdef
.n_propdefs
do
634 npropdef
.build_property
(self, nclassdef
)
636 for npropdef
in nclassdef
.n_propdefs
do
637 npropdef
.build_signature
(self, nclassdef
)
639 for npropdef
in nclassdef
.n_propdefs
do
640 npropdef
.check_signature
(self, nclassdef
)
642 process_default_constructors
(nclassdef
)
643 nclassdef
.build_properties_is_done
= true
646 # Introduce or inherit default constructor
647 # This is the last part of `build_properties'.
648 private fun process_default_constructors
(nclassdef
: AClassdef)
650 var mclassdef
= nclassdef
.mclassdef
.as(not null)
652 # Are we a refinement
653 if not mclassdef
.is_intro
then return
655 # Is the class forbid constructors?
656 if not mclassdef
.mclass
.kind
.need_init
then return
658 # Is there already a constructor defined?
659 for mpropdef
in mclassdef
.mpropdefs
do
660 if not mpropdef
isa MMethodDef then continue
661 if mpropdef
.mproperty
.is_init
then return
664 if not nclassdef
isa AStdClassdef then return
666 var mmodule
= nclassdef
.mclassdef
.mmodule
667 # Do we inherit for a constructor?
668 var combine
= new Array[MMethod]
669 var inhc
: nullable MClass = null
670 for st
in mclassdef
.supertypes
do
672 if not c
.kind
.need_init
then continue
673 st
= st
.anchor_to
(mmodule
, nclassdef
.mclassdef
.bound_mtype
)
674 var candidate
= self.try_get_mproperty_by_name2
(nclassdef
, mmodule
, st
, "init").as(nullable MMethod)
675 if candidate
!= null and candidate
.intro
.msignature
.arity
== 0 then
676 combine
.add
(candidate
)
679 var inhc2
= c
.inherit_init_from
680 if inhc2
== null then inhc2
= c
681 if inhc2
== inhc
then continue
683 self.error
(nclassdef
, "Cannot provide a defaut constructor: conflict for {inhc} and {c}")
688 if combine
.is_empty
and inhc
!= null then
689 # TODO: actively inherit the consturctor
690 self.toolcontext
.info
("{mclassdef} inherits all constructors from {inhc}", 3)
691 mclassdef
.mclass
.inherit_init_from
= inhc
694 if not combine
.is_empty
and inhc
!= null then
695 self.error
(nclassdef
, "Cannot provide a defaut constructor: conflict for {combine.join(", ")} and {inhc}")
699 if not combine
.is_empty
then
700 nclassdef
.super_inits
= combine
701 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
702 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
703 var mparameters
= new Array[MParameter]
704 var msignature
= new MSignature(mparameters
, null)
705 mpropdef
.msignature
= msignature
707 nclassdef
.mfree_init
= mpropdef
708 self.toolcontext
.info
("{mclassdef} gets a free empty constructor {mpropdef}{msignature}", 3)
712 # Collect undefined attributes
713 var mparameters
= new Array[MParameter]
714 for npropdef
in nclassdef
.n_propdefs
do
715 if npropdef
isa AAttrPropdef and npropdef
.n_expr
== null then
716 var paramname
= npropdef
.mpropdef
.mproperty
.name
.substring_from
(1)
717 var ret_type
= npropdef
.mpropdef
.static_mtype
718 if ret_type
== null then return
719 var mparameter
= new MParameter(paramname
, ret_type
, false)
720 mparameters
.add
(mparameter
)
724 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
725 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
726 var msignature
= new MSignature(mparameters
, null)
727 mpropdef
.msignature
= msignature
729 nclassdef
.mfree_init
= mpropdef
730 self.toolcontext
.info
("{mclassdef} gets a free constructor for attributes {mpropdef}{msignature}", 3)
733 # Return the static type associated to the node `ntype'.
734 # `classdef' is the context where the call is made (used to understand formal types)
735 # The mmodule used as context is `nclassdef.mmodule'
736 # In case of problem, an error is displayed on `ntype' and null is returned.
737 # FIXME: the name "resolve_mtype" is awful
738 fun resolve_mtype
(nclassdef
: AClassdef, ntype
: AType): nullable MType
740 var name
= ntype
.n_id
.text
741 var mclassdef
= nclassdef
.mclassdef
742 var mmodule
= nclassdef
.parent
.as(AModule).mmodule
.as(not null)
746 if mclassdef
!= null then
747 var prop
= try_get_mproperty_by_name
(ntype
, mclassdef
, name
).as(nullable MVirtualTypeProp)
749 if not ntype
.n_types
.is_empty
then
750 error
(ntype
, "Type error: formal type {name} cannot have formal parameters.")
752 res
= prop
.mvirtualtype
753 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
758 # Check parameter type
759 if mclassdef
!= null and mclassdef
.parameter_names
.has
(name
) then
760 if not ntype
.n_types
.is_empty
then
761 error
(ntype
, "Type error: formal type {name} cannot have formal parameters.")
763 for i
in [0..mclassdef
.parameter_names
.length
[ do
764 if mclassdef
.parameter_names
[i
] == name
then
765 res
= mclassdef
.mclass
.mclass_type
.as(MGenericType).arguments
[i
]
766 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
774 var mclass
= try_get_mclass_by_name
(ntype
, mmodule
, name
)
775 if mclass
!= null then
776 var arity
= ntype
.n_types
.length
777 if arity
!= mclass
.arity
then
779 error
(ntype
, "Type error: '{name}' is a generic class.")
780 else if mclass
.arity
== 0 then
781 error
(ntype
, "Type error: '{name}' is not a generic class.")
783 error
(ntype
, "Type error: '{name}' has {mclass.arity} parameters ({arity} are provided).")
788 res
= mclass
.mclass_type
789 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
792 var mtypes
= new Array[MType]
793 for nt
in ntype
.n_types
do
794 var mt
= resolve_mtype
(nclassdef
, nt
)
795 if mt
== null then return null # Forward error
798 res
= mclass
.get_mtype
(mtypes
)
799 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
804 # If everything fail, then give up :(
805 error
(ntype
, "Type error: class {name} not found in module {mmodule}.")
809 # Helper function to display an error on a node.
810 # Alias for `self.toolcontext.error(n.hot_location, text)'
811 fun error
(n
: ANode, text
: String)
813 self.toolcontext
.error
(n
.hot_location
, text
)
816 # Helper function to display a warning on a node.
817 # Alias for: `self.toolcontext.warning(n.hot_location, text)'
818 fun warning
(n
: ANode, text
: String)
820 self.toolcontext
.warning
(n
.hot_location
, text
)
825 # The associated MModule once build by a `ModelBuilder'
826 var mmodule
: nullable MModule
827 # Flag that indicate if the importation is already completed
828 var is_importation_done
: Bool = false
829 # Flag that indicate if the class and prop building is already completed
830 var build_classes_is_done
: Bool = false
834 # The class whose self inherit all the constructors.
835 # 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
836 var inherit_init_from
: nullable MClass = null
839 redef class AClassdef
840 # The associated MClass once build by a `ModelBuilder'
841 var mclass
: nullable MClass
842 # The associated MClassDef once build by a `ModelBuilder'
843 var mclassdef
: nullable MClassDef
844 var build_properties_is_done
: Bool = false
845 # The list of super-constructor to call at the start of the free constructor
846 # 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
847 var super_inits
: nullable Collection[MMethod] = null
849 # The free init (implicitely constructed by the class if required)
850 var mfree_init
: nullable MMethodDef = null
853 redef class AClasskind
854 # The class kind associated with the AST node class
855 private fun mkind
: MClassKind is abstract
857 redef class AConcreteClasskind
858 redef fun mkind
do return concrete_kind
860 redef class AAbstractClasskind
861 redef fun mkind
do return abstract_kind
863 redef class AInterfaceClasskind
864 redef fun mkind
do return interface_kind
866 redef class AEnumClasskind
867 redef fun mkind
do return enum_kind
869 redef class AExternClasskind
870 redef fun mkind
do return extern_kind
873 redef class AVisibility
874 # The visibility level associated with the AST node class
875 private fun mvisibility
: MVisibility is abstract
877 redef class AIntrudeVisibility
878 redef fun mvisibility
do return intrude_visibility
880 redef class APublicVisibility
881 redef fun mvisibility
do return public_visibility
883 redef class AProtectedVisibility
884 redef fun mvisibility
do return protected_visibility
886 redef class APrivateVisibility
887 redef fun mvisibility
do return private_visibility
894 # Join the text of all tokens
895 # Used to get the 'real name' of method definitions.
896 fun collect_text
: String
898 var v
= new TextCollectorVisitor
905 private class TextCollectorVisitor
907 var text
: String = ""
910 if n
isa Token then text
+= n
.text
916 private fun build_property
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
919 private fun build_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
922 private fun check_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
925 private fun new_property_visibility
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, nvisibility
: nullable AVisibility): MVisibility
927 var mvisibility
= public_visibility
928 if nvisibility
!= null then mvisibility
= nvisibility
.mvisibility
929 if nclassdef
.mclassdef
.mclass
.visibility
== private_visibility
then
930 if mvisibility
== protected_visibility
then
931 assert nvisibility
!= null
932 modelbuilder
.error
(nvisibility
, "Error: The only legal visibility for properties in a private class is private.")
933 else if mvisibility
== private_visibility
then
934 assert nvisibility
!= null
936 # modelbuilder.warning(nvisibility, "Warning: private is unrequired since the only legal visibility for properties in a private class is private.")
938 mvisibility
= private_visibility
943 private fun check_redef_property_visibility
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, nvisibility
: nullable AVisibility, mprop
: MProperty)
945 if nvisibility
== null then return
946 var mvisibility
= nvisibility
.mvisibility
947 if mvisibility
!= mprop
.visibility
and mvisibility
!= public_visibility
then
948 modelbuilder
.error
(nvisibility
, "Error: redefinition changed the visibility from a {mprop.visibility} to a {mvisibility}")
952 private fun check_redef_keyword
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, kwredef
: nullable Token, need_redef
: Bool, mprop
: MProperty)
954 if kwredef
== null then
956 modelbuilder
.error
(self, "Redef error: {nclassdef.mclassdef.mclass}::{mprop.name} is an inherited property. To redefine it, add the redef keyword.")
959 if not need_redef
then
960 modelbuilder
.error
(self, "Error: No property {nclassdef.mclassdef.mclass}::{mprop.name} is inherited. Remove the redef keyword to define a new property.")
967 redef class ASignature
968 # Is the model builder has correctly visited the signature
969 var is_visited
= false
970 # Names of parameters from the AST
971 # REQUIRE: is_visited
972 var param_names
= new Array[String]
973 # Types of parameters from the AST
974 # REQUIRE: is_visited
975 var param_types
= new Array[MType]
976 # Rank of the vararg (of -1 if none)
977 # REQUIRE: is_visited
978 var vararg_rank
: Int = -1
980 var ret_type
: nullable MType = null
982 # Visit and fill information about a signature
983 private fun visit_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef): Bool
985 var param_names
= self.param_names
986 var param_types
= self.param_types
987 for np
in self.n_params
do
988 param_names
.add
(np
.n_id
.text
)
989 var ntype
= np
.n_type
990 if ntype
!= null then
991 var mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
992 if mtype
== null then return false # Skip error
993 for i
in [0..param_names
.length-param_types
.length
[ do
994 param_types
.add
(mtype
)
996 if np
.n_dotdotdot
!= null then
997 if self.vararg_rank
!= -1 then
998 modelbuilder
.error
(np
, "Error: {param_names[self.vararg_rank]} is already a vararg")
1001 self.vararg_rank
= param_names
.length
- 1
1006 var ntype
= self.n_type
1007 if ntype
!= null then
1008 self.ret_type
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1009 if self.ret_type
== null then return false # Skip errir
1012 for nclosure
in self.n_closure_decls
do
1013 if not nclosure
.n_signature
.visit_signature
(modelbuilder
, nclassdef
) then return false
1016 self.is_visited
= true
1020 # Build a visited signature
1021 fun build_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef): nullable MSignature
1023 if param_names
.length
!= param_types
.length
then
1024 # Some parameters are typed, other parameters are not typed.
1025 modelbuilder
.warning
(self.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
1029 var mparameters
= new Array[MParameter]
1030 for i
in [0..param_names
.length
[ do
1031 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
1032 mparameters
.add
(mparameter
)
1035 var msignature
= new MSignature(mparameters
, ret_type
)
1040 redef class AMethPropdef
1041 # The associated MMethodDef once build by a `ModelBuilder'
1042 var mpropdef
: nullable MMethodDef
1044 # The associated super init if any
1045 var super_init
: nullable MMethod
1046 redef fun build_property
(modelbuilder
, nclassdef
)
1048 var is_init
= self isa AInitPropdef
1049 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1051 var amethodid
= self.n_methid
1052 var name_node
: ANode
1053 if amethodid
== null then
1054 if self isa AMainMethPropdef then
1057 else if self isa AConcreteInitPropdef then
1059 name_node
= self.n_kwinit
1060 else if self isa AExternInitPropdef then
1062 name_node
= self.n_kwnew
1066 else if amethodid
isa AIdMethid then
1067 name
= amethodid
.n_id
.text
1068 name_node
= amethodid
1070 # operator, bracket or assign
1071 name
= amethodid
.collect_text
1072 name_node
= amethodid
1074 if name
== "-" and self.n_signature
.n_params
.length
== 0 then
1079 var mprop
: nullable MMethod = null
1080 if not is_init
or n_kwredef
!= null then mprop
= modelbuilder
.try_get_mproperty_by_name
(name_node
, mclassdef
, name
).as(nullable MMethod)
1081 if mprop
== null then
1082 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1083 mprop
= new MMethod(mclassdef
, name
, mvisibility
)
1084 mprop
.is_init
= is_init
1085 mprop
.is_new
= self isa AExternInitPropdef
1086 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, false, mprop
)
1088 if n_kwredef
== null then
1089 if self isa AMainMethPropdef then
1092 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, true, mprop
)
1095 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1098 var mpropdef
= new MMethodDef(mclassdef
, mprop
, self.location
)
1100 self.mpropdef
= mpropdef
1101 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1102 if mpropdef
.is_intro
then
1103 modelbuilder
.toolcontext
.info
("{mpropdef} introduces new method {mprop.full_name}", 3)
1105 modelbuilder
.toolcontext
.info
("{mpropdef} redefines method {mprop.full_name}", 3)
1109 redef fun build_signature
(modelbuilder
, nclassdef
)
1111 var mpropdef
= self.mpropdef
1112 if mpropdef
== null then return # Error thus skiped
1113 var mmodule
= mpropdef
.mclassdef
.mmodule
1114 var nsig
= self.n_signature
1116 # Retrieve info from the signature AST
1117 var param_names
= new Array[String] # Names of parameters from the AST
1118 var param_types
= new Array[MType] # Types of parameters from the AST
1119 var vararg_rank
= -1
1120 var ret_type
: nullable MType = null # Return type from the AST
1121 if nsig
!= null then
1122 if not nsig
.visit_signature
(modelbuilder
, nclassdef
) then return
1123 param_names
= nsig
.param_names
1124 param_types
= nsig
.param_types
1125 vararg_rank
= nsig
.vararg_rank
1126 ret_type
= nsig
.ret_type
1129 # Look for some signature to inherit
1130 # FIXME: do not inherit from the intro, but from the most specific
1131 var msignature
: nullable MSignature = null
1132 if not mpropdef
.is_intro
then
1133 msignature
= mpropdef
.mproperty
.intro
.msignature
1134 if msignature
== null then return # Skip error
1135 else if mpropdef
.mproperty
.is_init
then
1136 # FIXME UGLY: inherit signature from a super-constructor
1137 for msupertype
in nclassdef
.mclassdef
.supertypes
do
1138 msupertype
= msupertype
.anchor_to
(mmodule
, nclassdef
.mclassdef
.bound_mtype
)
1139 var candidate
= modelbuilder
.try_get_mproperty_by_name2
(self, mmodule
, msupertype
, mpropdef
.mproperty
.name
)
1140 if candidate
!= null then
1141 if msignature
== null then
1142 msignature
= candidate
.intro
.as(MMethodDef).msignature
1148 # Inherit the signature
1149 if msignature
!= null and param_names
.length
!= param_types
.length
and param_names
.length
== msignature
.arity
and param_types
.length
== 0 then
1150 # Parameters are untyped, thus inherit them
1151 param_types
= new Array[MType]
1152 for mparameter
in msignature
.mparameters
do
1153 param_types
.add
(mparameter
.mtype
)
1155 vararg_rank
= msignature
.vararg_rank
1157 if msignature
!= null and ret_type
== null then
1158 ret_type
= msignature
.return_mtype
1161 if param_names
.length
!= param_types
.length
then
1162 # Some parameters are typed, other parameters are not typed.
1163 modelbuilder
.warning
(nsig
.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
1167 var mparameters
= new Array[MParameter]
1168 for i
in [0..param_names
.length
[ do
1169 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
1170 mparameters
.add
(mparameter
)
1173 msignature
= new MSignature(mparameters
, ret_type
)
1174 mpropdef
.msignature
= msignature
1176 if nsig
!= null then
1177 for nclosure
in nsig
.n_closure_decls
do
1178 var clos_signature
= nclosure
.n_signature
.build_signature
(modelbuilder
, nclassdef
)
1179 if clos_signature
== null then return
1180 var mparameter
= new MParameter(nclosure
.n_id
.text
, clos_signature
, false)
1181 msignature
.mclosures
.add
(mparameter
)
1187 redef fun check_signature
(modelbuilder
, nclassdef
)
1189 var mpropdef
= self.mpropdef
1190 if mpropdef
== null then return # Error thus skiped
1191 var mmodule
= mpropdef
.mclassdef
.mmodule
1192 var nsig
= self.n_signature
1193 var mysignature
= self.mpropdef
.msignature
1194 if mysignature
== null then return # Error thus skiped
1196 # Lookup for signature in the precursor
1197 # FIXME all precursors should be considered
1198 if not mpropdef
.is_intro
then
1199 var msignature
= mpropdef
.mproperty
.intro
.msignature
1200 if msignature
== null then return
1202 if mysignature
.arity
!= msignature
.arity
then
1204 if nsig
!= null then node
= nsig
else node
= self
1205 modelbuilder
.error
(node
, "Redef Error: {mysignature.arity} parameters found, {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1208 var precursor_ret_type
= msignature
.return_mtype
1209 var ret_type
= mysignature
.return_mtype
1210 if ret_type
!= null and precursor_ret_type
== null then
1211 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1215 if mysignature
.arity
> 0 then
1216 # Check parameters types
1217 for i
in [0..mysignature
.arity
[ do
1218 var myt
= mysignature
.mparameters
[i
].mtype
1219 var prt
= msignature
.mparameters
[i
].mtype
1220 if not myt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, prt
) and
1221 not prt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, myt
) then
1222 modelbuilder
.error
(nsig
.n_params
[i
], "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1226 if precursor_ret_type
!= null then
1227 if ret_type
== null then
1228 # Inherit the return type
1229 ret_type
= precursor_ret_type
1230 else if not ret_type
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, precursor_ret_type
) then
1231 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1238 redef class AAttrPropdef
1239 # The associated MAttributeDef once build by a `ModelBuilder'
1240 var mpropdef
: nullable MAttributeDef
1241 # The associated getter (read accessor) if any
1242 var mreadpropdef
: nullable MMethodDef
1243 # The associated setter (write accessor) if any
1244 var mwritepropdef
: nullable MMethodDef
1245 redef fun build_property
(modelbuilder
, nclassdef
)
1247 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1248 var mclass
= mclassdef
.mclass
1251 if self.n_id
!= null then
1252 name
= self.n_id
.text
1254 name
= self.n_id2
.text
1257 if mclass
.kind
== interface_kind
or mclassdef
.mclass
.kind
== enum_kind
then
1258 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the interface {mclass}.")
1259 else if mclass
.kind
== enum_kind
then
1260 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the enum class {mclass}.")
1265 # Old attribute style
1266 var mprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, name
)
1267 if mprop
== null then
1268 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1269 mprop
= new MAttribute(mclassdef
, name
, mvisibility
)
1270 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, false, mprop
)
1272 assert mprop
isa MAttribute
1273 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1274 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, true, mprop
)
1276 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1277 self.mpropdef
= mpropdef
1278 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1280 var nreadable
= self.n_readable
1281 if nreadable
!= null then
1282 var readname
= name
.substring_from
(1)
1283 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, readname
).as(nullable MMethod)
1284 if mreadprop
== null then
1285 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nreadable
.n_visibility
)
1286 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1287 self.check_redef_keyword
(modelbuilder
, nclassdef
, nreadable
.n_kwredef
, false, mreadprop
)
1289 self.check_redef_keyword
(modelbuilder
, nclassdef
, nreadable
.n_kwredef
, true, mreadprop
)
1290 check_redef_property_visibility
(modelbuilder
, nclassdef
, nreadable
.n_visibility
, mreadprop
)
1292 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1293 self.mreadpropdef
= mreadpropdef
1294 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1297 var nwritable
= self.n_writable
1298 if nwritable
!= null then
1299 var writename
= name
.substring_from
(1) + "="
1300 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, writename
).as(nullable MMethod)
1301 if mwriteprop
== null then
1302 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
)
1303 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1304 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwritable
.n_kwredef
, false, mwriteprop
)
1306 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwritable
.n_kwredef
, true, mwriteprop
)
1307 check_redef_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
, mwriteprop
)
1309 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1310 self.mwritepropdef
= mwritepropdef
1311 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1314 # New attribute style
1315 var nid2
= self.n_id2
.as(not null)
1316 var mprop
= new MAttribute(mclassdef
, "@" + name
, none_visibility
)
1317 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1318 self.mpropdef
= mpropdef
1319 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1322 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, readname
).as(nullable MMethod)
1323 if mreadprop
== null then
1324 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1325 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1326 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, false, mreadprop
)
1328 self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, true, mreadprop
)
1329 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mreadprop
)
1331 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1332 self.mreadpropdef
= mreadpropdef
1333 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1335 var writename
= name
+ "="
1336 var nwritable
= self.n_writable
1337 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, writename
).as(nullable MMethod)
1338 var nwkwredef
: nullable Token = null
1339 if nwritable
!= null then nwkwredef
= nwritable
.n_kwredef
1340 if mwriteprop
== null then
1342 if nwritable
!= null then
1343 mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
)
1345 mvisibility
= private_visibility
1347 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1348 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwkwredef
, false, mwriteprop
)
1350 self.check_redef_keyword
(modelbuilder
, nclassdef
, nwkwredef
, true, mwriteprop
)
1351 if nwritable
!= null then
1352 check_redef_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
, mwriteprop
)
1355 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1356 self.mwritepropdef
= mwritepropdef
1357 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1361 redef fun build_signature
(modelbuilder
, nclassdef
)
1363 var mpropdef
= self.mpropdef
1364 if mpropdef
== null then return # Error thus skiped
1365 var mmodule
= mpropdef
.mclassdef
.mmodule
1366 var mtype
: nullable MType = null
1368 var ntype
= self.n_type
1369 if ntype
!= null then
1370 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1371 if mtype
== null then return
1374 if mtype
== null then
1375 var nexpr
= self.n_expr
1376 if nexpr
!= null then
1377 if nexpr
isa ANewExpr then
1378 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, nexpr
.n_type
)
1379 else if nexpr
isa AIntExpr then
1380 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Int")
1381 if cla
!= null then mtype
= cla
.mclass_type
1382 else if nexpr
isa AFloatExpr then
1383 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Float")
1384 if cla
!= null then mtype
= cla
.mclass_type
1385 else if nexpr
isa ACharExpr then
1386 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Char")
1387 if cla
!= null then mtype
= cla
.mclass_type
1388 else if nexpr
isa ABoolExpr then
1389 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Bool")
1390 if cla
!= null then mtype
= cla
.mclass_type
1391 else if nexpr
isa ASuperstringExpr then
1392 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1393 if cla
!= null then mtype
= cla
.mclass_type
1394 else if nexpr
isa AStringFormExpr then
1395 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1396 if cla
!= null then mtype
= cla
.mclass_type
1398 modelbuilder
.error
(self, "Error: Untyped attribute {mpropdef}. Implicit typing allowed only for literals and new.")
1402 modelbuilder
.error
(self, "Error: Untyped attribute {mpropdef}")
1406 if mtype
== null then return
1408 mpropdef
.static_mtype
= mtype
1410 var mreadpropdef
= self.mreadpropdef
1411 if mreadpropdef
!= null then
1412 var msignature
= new MSignature(new Array[MParameter], mtype
)
1413 mreadpropdef
.msignature
= msignature
1416 var msritepropdef
= self.mwritepropdef
1417 if mwritepropdef
!= null then
1419 if n_id
!= null then
1420 name
= n_id
.text
.substring_from
(1)
1424 var mparameter
= new MParameter(name
, mtype
, false)
1425 var msignature
= new MSignature([mparameter
], null)
1426 mwritepropdef
.msignature
= msignature
1430 redef fun check_signature
(modelbuilder
, nclassdef
)
1432 var mpropdef
= self.mpropdef
1433 if mpropdef
== null then return # Error thus skiped
1434 var mmodule
= mpropdef
.mclassdef
.mmodule
1435 var ntype
= self.n_type
1436 var mtype
= self.mpropdef
.static_mtype
1437 if mtype
== null then return # Error thus skiped
1439 # Lookup for signature in the precursor
1440 # FIXME all precursors should be considered
1441 if not mpropdef
.is_intro
then
1442 var precursor_type
= mpropdef
.mproperty
.intro
.static_mtype
1443 if precursor_type
== null then return
1445 if mtype
!= precursor_type
then
1446 modelbuilder
.error
(ntype
.as(not null), "Redef Error: Wrong static type. found {mtype}, expected {precursor_type}.")
1451 # Check getter and setter
1452 var meth
= self.mreadpropdef
1453 if meth
!= null then self.check_method_signature
(modelbuilder
, nclassdef
, meth
)
1454 meth
= self.mwritepropdef
1455 if meth
!= null then self.check_method_signature
(modelbuilder
, nclassdef
, meth
)
1458 private fun check_method_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, mpropdef
: MMethodDef)
1460 var mmodule
= mpropdef
.mclassdef
.mmodule
1461 var nsig
= self.n_type
1462 var mysignature
= mpropdef
.msignature
1463 if mysignature
== null then return # Error thus skiped
1465 # Lookup for signature in the precursor
1466 # FIXME all precursors should be considered
1467 if not mpropdef
.is_intro
then
1468 var msignature
= mpropdef
.mproperty
.intro
.msignature
1469 if msignature
== null then return
1471 if mysignature
.arity
!= msignature
.arity
then
1473 if nsig
!= null then node
= nsig
else node
= self
1474 modelbuilder
.error
(node
, "Redef Error: {mysignature.arity} parameters found, {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1477 var precursor_ret_type
= msignature
.return_mtype
1478 var ret_type
= mysignature
.return_mtype
1479 if ret_type
!= null and precursor_ret_type
== null then
1481 if nsig
!= null then node
= nsig
else node
= self
1482 modelbuilder
.error
(node
, "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1486 if mysignature
.arity
> 0 then
1487 # Check parameters types
1488 for i
in [0..mysignature
.arity
[ do
1489 var myt
= mysignature
.mparameters
[i
].mtype
1490 var prt
= msignature
.mparameters
[i
].mtype
1491 if not myt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, prt
) and
1492 not prt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, myt
) then
1494 if nsig
!= null then node
= nsig
else node
= self
1495 modelbuilder
.error
(node
, "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1499 if precursor_ret_type
!= null then
1500 if ret_type
== null then
1501 # Inherit the return type
1502 ret_type
= precursor_ret_type
1503 else if not ret_type
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, precursor_ret_type
) then
1505 if nsig
!= null then node
= nsig
else node
= self
1506 modelbuilder
.error
(node
, "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1513 redef class ATypePropdef
1514 # The associated MVirtualTypeDef once build by a `ModelBuilder'
1515 var mpropdef
: nullable MVirtualTypeDef
1516 redef fun build_property
(modelbuilder
, nclassdef
)
1518 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1519 var name
= self.n_id
.text
1520 var mprop
= modelbuilder
.try_get_mproperty_by_name
(self.n_id
, mclassdef
, name
)
1521 if mprop
== null then
1522 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1523 mprop
= new MVirtualTypeProp(mclassdef
, name
, mvisibility
)
1524 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, false, mprop
)
1526 self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, true, mprop
)
1527 assert mprop
isa MVirtualTypeProp
1528 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1530 var mpropdef
= new MVirtualTypeDef(mclassdef
, mprop
, self.location
)
1531 self.mpropdef
= mpropdef
1534 redef fun build_signature
(modelbuilder
, nclassdef
)
1536 var mpropdef
= self.mpropdef
1537 if mpropdef
== null then return # Error thus skiped
1538 var mmodule
= mpropdef
.mclassdef
.mmodule
1539 var mtype
: nullable MType = null
1541 var ntype
= self.n_type
1542 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1543 if mtype
== null then return
1545 mpropdef
.bound
= mtype
1546 # print "{mpropdef}: {mtype}"
1549 redef fun check_signature
(modelbuilder
, nclassdef
)
1551 var bound
= self.mpropdef
.bound
1553 # Fast case: the bound is not a formal type
1554 if not bound
isa MVirtualType then return
1556 var mmodule
= nclassdef
.mclassdef
.mmodule
1557 var anchor
= nclassdef
.mclassdef
.bound_mtype
1559 # Slow case: progress on each resolution until: (i) we loop, or (ii) we found a non formal type
1560 var seen
= [self.mpropdef
.mproperty
.mvirtualtype
]
1562 if seen
.has
(bound
) then
1564 modelbuilder
.error
(self, "Error: circularity of virtual type definition: {seen.join(" -> ")}")
1568 var next
= bound
.lookup_bound
(mmodule
, anchor
)
1569 if not next
isa MVirtualType then return