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 nmodule
.is_importation_done
= true
385 var mmodule
= nmodule
.mmodule
.as(not null)
387 var imported_modules
= new Array[MModule]
388 for aimport
in nmodule
.n_imports
do
390 if not aimport
isa AStdImport then
393 var mod_name
= aimport
.n_name
.n_id
.text
394 var sup
= self.get_mmodule_by_name
(aimport
.n_name
, mmodule
, mod_name
)
395 if sup
== null then continue # Skip error
396 imported_modules
.add
(sup
)
397 var mvisibility
= aimport
.n_visibility
.mvisibility
398 mmodule
.set_visibility_for
(sup
, mvisibility
)
401 var mod_name
= "standard"
402 var sup
= self.get_mmodule_by_name
(nmodule
, null, mod_name
)
403 if sup
!= null then # Skip error
404 imported_modules
.add
(sup
)
405 mmodule
.set_visibility_for
(sup
, public_visibility
)
408 self.toolcontext
.info
("{mmodule} imports {imported_modules.join(", ")}", 3)
409 mmodule
.set_imported_mmodules
(imported_modules
)
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 nmodule
.mclass2nclassdef
.has_key
(mclass
) then
462 error
(nclassdef
, "Error: A class {name} is already defined at line {nmodule.mclass2nclassdef[mclass].location.line_start}.")
464 else if nclassdef
isa AStdClassdef and nclassdef
.n_kwredef
== null then
465 error
(nclassdef
, "Redef error: {name} is an imported class. Add the redef keyword to refine it.")
467 else if mclass
.arity
!= arity
then
468 error
(nclassdef
, "Redef error: Formal parameter arity missmatch; got {arity}, expected {mclass.arity}.")
470 else if nkind
!= null and mkind
!= concrete_kind
and mclass
.kind
!= mkind
then
471 error
(nkind
, "Error: refinement changed the kind from a {mclass.kind} to a {mkind}")
472 else if nvisibility
!= null and mvisibility
!= public_visibility
and mclass
.visibility
!= mvisibility
then
473 error
(nvisibility
, "Error: refinement changed the visibility from a {mclass.visibility} to a {mvisibility}")
475 nclassdef
.mclass
= mclass
476 nmodule
.mclass2nclassdef
[mclass
] = nclassdef
479 # Visit the AST and create the MClassDef objects
480 private fun build_a_mclassdef
(nmodule
: AModule, nclassdef
: AClassdef)
482 var mmodule
= nmodule
.mmodule
.as(not null)
483 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
484 var mclass
= nclassdef
.mclass
485 if mclass
== null then return # Skip error
486 #var mclassdef = nclassdef.mclassdef.as(not null)
488 var names
= new Array[String]
489 var bounds
= new Array[MType]
490 if nclassdef
isa AStdClassdef and mclass
.arity
> 0 then
491 # Collect formal parameter names
492 for i
in [0..mclass
.arity
[ do
493 var nfd
= nclassdef
.n_formaldefs
[i
]
494 var ptname
= nfd
.n_id
.text
495 if names
.has
(ptname
) then
496 error
(nfd
, "Error: A formal parameter type `{ptname}' already exists")
502 # Revolve bound for formal parameter names
503 for i
in [0..mclass
.arity
[ do
504 var nfd
= nclassdef
.n_formaldefs
[i
]
505 var nfdt
= nfd
.n_type
507 var bound
= resolve_mtype
(nclassdef
, nfdt
)
508 if bound
== null then return # Forward error
509 if bound
.need_anchor
then
511 error
(nfd
, "Error: Formal parameter type `{names[i]}' bounded with a formal parameter type")
515 else if mclass
.mclassdefs
.is_empty
then
516 # No bound, then implicitely bound by nullable Object
517 bounds
.add
(objectclass
.mclass_type
.as_nullable
)
520 bounds
.add
(mclass
.mclassdefs
.first
.bound_mtype
.arguments
[i
])
525 var bound_mtype
= mclass
.get_mtype
(bounds
)
526 var mclassdef
= new MClassDef(mmodule
, bound_mtype
, nclassdef
.location
, names
)
527 nclassdef
.mclassdef
= mclassdef
528 self.mclassdef2nclassdef
[mclassdef
] = nclassdef
530 if mclassdef
.is_intro
then
531 self.toolcontext
.info
("{mclassdef} introduces new {mclass.kind} {mclass.full_name}", 3)
533 self.toolcontext
.info
("{mclassdef} refine {mclass.kind} {mclass.full_name}", 3)
537 # Visit the AST and set the super-types of the MClassdef objects
538 private fun collect_a_mclassdef_inheritance
(nmodule
: AModule, nclassdef
: AClassdef)
540 var mmodule
= nmodule
.mmodule
.as(not null)
541 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
542 var mclass
= nclassdef
.mclass
.as(not null)
543 var mclassdef
= nclassdef
.mclassdef
.as(not null)
545 var specobject
= true
546 var supertypes
= new Array[MClassType]
547 if nclassdef
isa AStdClassdef then
548 for nsc
in nclassdef
.n_superclasses
do
550 var ntype
= nsc
.n_type
551 var mtype
= resolve_mtype
(nclassdef
, ntype
)
552 if mtype
== null then continue # Skip because of error
553 if not mtype
isa MClassType then
554 error
(ntype
, "Error: supertypes cannot be a formal type")
558 #print "new super : {mclass} < {mtype}"
561 if specobject
and mclass
.name
!= "Object" and objectclass
!= null and mclassdef
.is_intro
then
562 supertypes
.add objectclass
.mclass_type
565 mclassdef
.set_supertypes
(supertypes
)
566 if not supertypes
.is_empty
then self.toolcontext
.info
("{mclassdef} new super-types: {supertypes.join(", ")}", 3)
569 # Check the validity of the specialization heirarchy
570 # FIXME Stub implementation
571 private fun check_supertypes
(nmodule
: AModule, nclassdef
: AClassdef)
573 var mmodule
= nmodule
.mmodule
.as(not null)
574 var objectclass
= try_get_mclass_by_name
(nmodule
, mmodule
, "Object")
575 var mclass
= nclassdef
.mclass
.as(not null)
576 var mclassdef
= nclassdef
.mclassdef
.as(not null)
579 # Build the classes of the module `nmodule'.
580 # REQUIRE: classes of imported modules are already build. (let `build_all_classes' do the job)
581 private fun build_classes
(nmodule
: AModule)
583 # Force building recursively
584 if nmodule
.build_classes_is_done
then return
585 nmodule
.build_classes_is_done
= true
586 var mmodule
= nmodule
.mmodule
.as(not null)
587 for imp
in mmodule
.in_importation
.direct_greaters
do
589 build_classes
(mmodule2nmodule
[imp
])
593 for nclassdef
in nmodule
.n_classdefs
do
594 self.build_a_mclass
(nmodule
, nclassdef
)
597 # Create all classdefs
598 for nclassdef
in nmodule
.n_classdefs
do
599 self.build_a_mclassdef
(nmodule
, nclassdef
)
602 for nclassdef
in nmodule
.n_classdefs
do
603 if nclassdef
.mclassdef
== null then return # forward error
606 # Create inheritance on all classdefs
607 for nclassdef
in nmodule
.n_classdefs
do
608 self.collect_a_mclassdef_inheritance
(nmodule
, nclassdef
)
611 # Create the mclassdef hierarchy
612 for nclassdef
in nmodule
.n_classdefs
do
613 var mclassdef
= nclassdef
.mclassdef
.as(not null)
614 mclassdef
.add_in_hierarchy
617 # TODO: Check that the super-class is not intrusive
619 # TODO: Check that the super-class is not already known (by transitivity)
621 for nclassdef
in nmodule
.n_classdefs
do
622 self.build_properties
(nclassdef
)
626 # Register the nmodule associated to each mmodule
627 # FIXME: why not refine the MModule class with a nullable attribute?
628 var mmodule2nmodule
: HashMap[MModule, AModule] = new HashMap[MModule, AModule]
629 # Register the nclassdef associated to each mclassdef
630 # FIXME: why not refine the MClassDef class with a nullable attribute?
631 var mclassdef2nclassdef
: HashMap[MClassDef, AClassdef] = new HashMap[MClassDef, AClassdef]
632 # Register the npropdef associated to each mpropdef
633 # FIXME: why not refine the MPropDef class with a nullable attribute?
634 var mpropdef2npropdef
: HashMap[MPropDef, APropdef] = new HashMap[MPropDef, APropdef]
636 # Build the properties of `nclassdef'.
637 # REQUIRE: all superclasses are built.
638 private fun build_properties
(nclassdef
: AClassdef)
640 # Force building recursively
641 if nclassdef
.build_properties_is_done
then return
642 nclassdef
.build_properties_is_done
= true
643 var mclassdef
= nclassdef
.mclassdef
.as(not null)
644 if mclassdef
.in_hierarchy
== null then return # Skip error
645 for superclassdef
in mclassdef
.in_hierarchy
.direct_greaters
do
646 build_properties
(mclassdef2nclassdef
[superclassdef
])
649 for npropdef
in nclassdef
.n_propdefs
do
650 npropdef
.build_property
(self, nclassdef
)
652 for npropdef
in nclassdef
.n_propdefs
do
653 npropdef
.build_signature
(self, nclassdef
)
655 for npropdef
in nclassdef
.n_propdefs
do
656 npropdef
.check_signature
(self, nclassdef
)
658 process_default_constructors
(nclassdef
)
661 # Introduce or inherit default constructor
662 # This is the last part of `build_properties'.
663 private fun process_default_constructors
(nclassdef
: AClassdef)
665 var mclassdef
= nclassdef
.mclassdef
.as(not null)
667 # Are we a refinement
668 if not mclassdef
.is_intro
then return
670 # Is the class forbid constructors?
671 if not mclassdef
.mclass
.kind
.need_init
then return
673 # Is there already a constructor defined?
674 for mpropdef
in mclassdef
.mpropdefs
do
675 if not mpropdef
isa MMethodDef then continue
676 if mpropdef
.mproperty
.is_init
then return
679 if not nclassdef
isa AStdClassdef then return
681 var mmodule
= nclassdef
.mclassdef
.mmodule
682 # Do we inherit for a constructor?
683 var combine
= new Array[MMethod]
684 var inhc
: nullable MClass = null
685 for st
in mclassdef
.supertypes
do
687 if not c
.kind
.need_init
then continue
688 st
= st
.anchor_to
(mmodule
, nclassdef
.mclassdef
.bound_mtype
)
689 var candidate
= self.try_get_mproperty_by_name2
(nclassdef
, mmodule
, st
, "init").as(nullable MMethod)
690 if candidate
!= null and candidate
.intro
.msignature
.arity
== 0 then
691 combine
.add
(candidate
)
694 var inhc2
= c
.inherit_init_from
695 if inhc2
== null then inhc2
= c
696 if inhc2
== inhc
then continue
698 self.error
(nclassdef
, "Error: Cannot provide a defaut constructor: conflict for {inhc} and {c}")
703 if combine
.is_empty
and inhc
!= null then
704 # TODO: actively inherit the consturctor
705 self.toolcontext
.info
("{mclassdef} inherits all constructors from {inhc}", 3)
706 mclassdef
.mclass
.inherit_init_from
= inhc
709 if not combine
.is_empty
and inhc
!= null then
710 self.error
(nclassdef
, "Error: Cannot provide a defaut constructor: conflict for {combine.join(", ")} and {inhc}")
714 if not combine
.is_empty
then
715 nclassdef
.super_inits
= combine
716 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
717 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
718 var mparameters
= new Array[MParameter]
719 var msignature
= new MSignature(mparameters
, null)
720 mpropdef
.msignature
= msignature
722 nclassdef
.mfree_init
= mpropdef
723 self.toolcontext
.info
("{mclassdef} gets a free empty constructor {mpropdef}{msignature}", 3)
727 # Collect undefined attributes
728 var mparameters
= new Array[MParameter]
729 for npropdef
in nclassdef
.n_propdefs
do
730 if npropdef
isa AAttrPropdef and npropdef
.n_expr
== null then
731 if npropdef
.mpropdef
== null then return # Skip broken attribute
732 var paramname
= npropdef
.mpropdef
.mproperty
.name
.substring_from
(1)
733 var ret_type
= npropdef
.mpropdef
.static_mtype
734 if ret_type
== null then return
735 var mparameter
= new MParameter(paramname
, ret_type
, false)
736 mparameters
.add
(mparameter
)
740 var mprop
= new MMethod(mclassdef
, "init", mclassdef
.mclass
.visibility
)
741 var mpropdef
= new MMethodDef(mclassdef
, mprop
, nclassdef
.location
)
742 var msignature
= new MSignature(mparameters
, null)
743 mpropdef
.msignature
= msignature
745 nclassdef
.mfree_init
= mpropdef
746 self.toolcontext
.info
("{mclassdef} gets a free constructor for attributes {mpropdef}{msignature}", 3)
749 # Return the static type associated to the node `ntype'.
750 # `classdef' is the context where the call is made (used to understand formal types)
751 # The mmodule used as context is `nclassdef.mmodule'
752 # In case of problem, an error is displayed on `ntype' and null is returned.
753 # FIXME: the name "resolve_mtype" is awful
754 fun resolve_mtype
(nclassdef
: AClassdef, ntype
: AType): nullable MType
756 var name
= ntype
.n_id
.text
757 var mclassdef
= nclassdef
.mclassdef
758 var mmodule
= nclassdef
.parent
.as(AModule).mmodule
.as(not null)
762 if mclassdef
!= null then
763 var prop
= try_get_mproperty_by_name
(ntype
, mclassdef
, name
).as(nullable MVirtualTypeProp)
765 if not ntype
.n_types
.is_empty
then
766 error
(ntype
, "Type error: formal type {name} cannot have formal parameters.")
768 res
= prop
.mvirtualtype
769 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
774 # Check parameter type
775 if mclassdef
!= null and mclassdef
.parameter_names
.has
(name
) then
776 if not ntype
.n_types
.is_empty
then
777 error
(ntype
, "Type error: formal type {name} cannot have formal parameters.")
779 for i
in [0..mclassdef
.parameter_names
.length
[ do
780 if mclassdef
.parameter_names
[i
] == name
then
781 res
= mclassdef
.mclass
.mclass_type
.arguments
[i
]
782 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
790 var mclass
= try_get_mclass_by_name
(ntype
, mmodule
, name
)
791 if mclass
!= null then
792 var arity
= ntype
.n_types
.length
793 if arity
!= mclass
.arity
then
795 error
(ntype
, "Type error: '{name}' is a generic class.")
796 else if mclass
.arity
== 0 then
797 error
(ntype
, "Type error: '{name}' is not a generic class.")
799 error
(ntype
, "Type error: '{name}' has {mclass.arity} parameters ({arity} are provided).")
804 res
= mclass
.mclass_type
805 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
808 var mtypes
= new Array[MType]
809 for nt
in ntype
.n_types
do
810 var mt
= resolve_mtype
(nclassdef
, nt
)
811 if mt
== null then return null # Forward error
814 res
= mclass
.get_mtype
(mtypes
)
815 if ntype
.n_kwnullable
!= null then res
= res
.as_nullable
820 # If everything fail, then give up :(
821 error
(ntype
, "Type error: class {name} not found in module {mmodule}.")
825 # Helper function to display an error on a node.
826 # Alias for `self.toolcontext.error(n.hot_location, text)'
827 fun error
(n
: ANode, text
: String)
829 self.toolcontext
.error
(n
.hot_location
, text
)
832 # Helper function to display a warning on a node.
833 # Alias for: `self.toolcontext.warning(n.hot_location, text)'
834 fun warning
(n
: ANode, text
: String)
836 self.toolcontext
.warning
(n
.hot_location
, text
)
839 # Force to get the primitive method named `name' on the type `recv' or do a fatal error on `n'
840 fun force_get_primitive_method
(n
: ANode, name
: String, recv
: MType, mmodule
: MModule): MMethod
842 var res
= mmodule
.try_get_primitive_method
(name
, recv
)
844 self.toolcontext
.fatal_error
(n
.hot_location
, "Fatal Error: {recv} must have a property named {name}.")
852 # The associated MModule once build by a `ModelBuilder'
853 var mmodule
: nullable MModule
854 # Flag that indicate if the importation is already completed
855 var is_importation_done
: Bool = false
856 # Flag that indicate if the class and prop building is already completed
857 var build_classes_is_done
: Bool = false
858 # What is the AClassdef associated to a MClass?
859 # Used to check multiple definition of a class.
860 var mclass2nclassdef
: Map[MClass, AClassdef] = new HashMap[MClass, AClassdef]
865 # The class whose self inherit all the constructors.
866 # 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
867 var inherit_init_from
: nullable MClass = null
870 redef class AClassdef
871 # The associated MClass once build by a `ModelBuilder'
872 var mclass
: nullable MClass
873 # The associated MClassDef once build by a `ModelBuilder'
874 var mclassdef
: nullable MClassDef
875 var build_properties_is_done
: Bool = false
876 # The list of super-constructor to call at the start of the free constructor
877 # 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
878 var super_inits
: nullable Collection[MMethod] = null
880 # The free init (implicitely constructed by the class if required)
881 var mfree_init
: nullable MMethodDef = null
883 # What is the APropdef associated to a MProperty?
884 # Used to check multiple definition of a property.
885 var mprop2npropdef
: Map[MProperty, APropdef] = new HashMap[MProperty, APropdef]
888 redef class AClasskind
889 # The class kind associated with the AST node class
890 private fun mkind
: MClassKind is abstract
892 redef class AConcreteClasskind
893 redef fun mkind
do return concrete_kind
895 redef class AAbstractClasskind
896 redef fun mkind
do return abstract_kind
898 redef class AInterfaceClasskind
899 redef fun mkind
do return interface_kind
901 redef class AEnumClasskind
902 redef fun mkind
do return enum_kind
904 redef class AExternClasskind
905 redef fun mkind
do return extern_kind
908 redef class AVisibility
909 # The visibility level associated with the AST node class
910 private fun mvisibility
: MVisibility is abstract
912 redef class AIntrudeVisibility
913 redef fun mvisibility
do return intrude_visibility
915 redef class APublicVisibility
916 redef fun mvisibility
do return public_visibility
918 redef class AProtectedVisibility
919 redef fun mvisibility
do return protected_visibility
921 redef class APrivateVisibility
922 redef fun mvisibility
do return private_visibility
929 # Join the text of all tokens
930 # Used to get the 'real name' of method definitions.
931 fun collect_text
: String
933 var v
= new TextCollectorVisitor
940 private class TextCollectorVisitor
942 var text
: String = ""
945 if n
isa Token then text
+= n
.text
951 private fun build_property
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
954 private fun build_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
957 private fun check_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef)
960 private fun new_property_visibility
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, nvisibility
: nullable AVisibility): MVisibility
962 var mvisibility
= public_visibility
963 if nvisibility
!= null then mvisibility
= nvisibility
.mvisibility
964 if nclassdef
.mclassdef
.mclass
.visibility
== private_visibility
then
965 if mvisibility
== protected_visibility
then
966 assert nvisibility
!= null
967 modelbuilder
.error
(nvisibility
, "Error: The only legal visibility for properties in a private class is private.")
968 else if mvisibility
== private_visibility
then
969 assert nvisibility
!= null
971 # modelbuilder.warning(nvisibility, "Warning: private is unrequired since the only legal visibility for properties in a private class is private.")
973 mvisibility
= private_visibility
978 private fun check_redef_property_visibility
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, nvisibility
: nullable AVisibility, mprop
: MProperty)
980 if nvisibility
== null then return
981 var mvisibility
= nvisibility
.mvisibility
982 if mvisibility
!= mprop
.visibility
and mvisibility
!= public_visibility
then
983 modelbuilder
.error
(nvisibility
, "Error: redefinition changed the visibility from a {mprop.visibility} to a {mvisibility}")
987 private fun check_redef_keyword
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, kwredef
: nullable Token, need_redef
: Bool, mprop
: MProperty): Bool
989 if nclassdef
.mprop2npropdef
.has_key
(mprop
) then
990 modelbuilder
.error
(self, "Error: A property {mprop} is already defined in class {nclassdef.mclassdef.mclass}.")
993 if kwredef
== null then
995 modelbuilder
.error
(self, "Redef error: {nclassdef.mclassdef.mclass}::{mprop.name} is an inherited property. To redefine it, add the redef keyword.")
999 if not need_redef
then
1000 modelbuilder
.error
(self, "Error: No property {nclassdef.mclassdef.mclass}::{mprop.name} is inherited. Remove the redef keyword to define a new property.")
1009 redef class ASignature
1010 # Is the model builder has correctly visited the signature
1011 var is_visited
= false
1012 # Names of parameters from the AST
1013 # REQUIRE: is_visited
1014 var param_names
= new Array[String]
1015 # Types of parameters from the AST
1016 # REQUIRE: is_visited
1017 var param_types
= new Array[MType]
1018 # Rank of the vararg (of -1 if none)
1019 # REQUIRE: is_visited
1020 var vararg_rank
: Int = -1
1022 var ret_type
: nullable MType = null
1024 # Visit and fill information about a signature
1025 private fun visit_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef): Bool
1027 var param_names
= self.param_names
1028 var param_types
= self.param_types
1029 for np
in self.n_params
do
1030 param_names
.add
(np
.n_id
.text
)
1031 var ntype
= np
.n_type
1032 if ntype
!= null then
1033 var mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1034 if mtype
== null then return false # Skip error
1035 for i
in [0..param_names
.length-param_types
.length
[ do
1036 param_types
.add
(mtype
)
1038 if np
.n_dotdotdot
!= null then
1039 if self.vararg_rank
!= -1 then
1040 modelbuilder
.error
(np
, "Error: {param_names[self.vararg_rank]} is already a vararg")
1043 self.vararg_rank
= param_names
.length
- 1
1048 var ntype
= self.n_type
1049 if ntype
!= null then
1050 self.ret_type
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1051 if self.ret_type
== null then return false # Skip errir
1054 for nclosure
in self.n_closure_decls
do
1055 if not nclosure
.n_signature
.visit_signature
(modelbuilder
, nclassdef
) then return false
1058 self.is_visited
= true
1062 # Build a visited signature
1063 fun build_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef): nullable MSignature
1065 if param_names
.length
!= param_types
.length
then
1066 # Some parameters are typed, other parameters are not typed.
1067 modelbuilder
.error
(self.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
1071 var mparameters
= new Array[MParameter]
1072 for i
in [0..param_names
.length
[ do
1073 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
1074 mparameters
.add
(mparameter
)
1077 var msignature
= new MSignature(mparameters
, ret_type
)
1082 redef class AMethPropdef
1083 # The associated MMethodDef once build by a `ModelBuilder'
1084 var mpropdef
: nullable MMethodDef
1086 # The associated super init if any
1087 var super_init
: nullable MMethod
1088 redef fun build_property
(modelbuilder
, nclassdef
)
1090 var is_init
= self isa AInitPropdef
1091 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1093 var amethodid
= self.n_methid
1094 var name_node
: ANode
1095 if amethodid
== null then
1096 if self isa AMainMethPropdef then
1099 else if self isa AConcreteInitPropdef then
1101 name_node
= self.n_kwinit
1102 else if self isa AExternInitPropdef then
1104 name_node
= self.n_kwnew
1108 else if amethodid
isa AIdMethid then
1109 name
= amethodid
.n_id
.text
1110 name_node
= amethodid
1112 # operator, bracket or assign
1113 name
= amethodid
.collect_text
1114 name_node
= amethodid
1116 if name
== "-" and self.n_signature
.n_params
.length
== 0 then
1121 var mprop
: nullable MMethod = null
1122 if not is_init
or n_kwredef
!= null then mprop
= modelbuilder
.try_get_mproperty_by_name
(name_node
, mclassdef
, name
).as(nullable MMethod)
1123 if mprop
== null then
1124 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1125 mprop
= new MMethod(mclassdef
, name
, mvisibility
)
1126 mprop
.is_init
= is_init
1127 mprop
.is_new
= self isa AExternInitPropdef
1128 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, false, mprop
) then return
1130 if n_kwredef
== null then
1131 if self isa AMainMethPropdef then
1134 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, true, mprop
) then return
1137 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1139 nclassdef
.mprop2npropdef
[mprop
] = self
1141 var mpropdef
= new MMethodDef(mclassdef
, mprop
, self.location
)
1143 self.mpropdef
= mpropdef
1144 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1145 if mpropdef
.is_intro
then
1146 modelbuilder
.toolcontext
.info
("{mpropdef} introduces new method {mprop.full_name}", 3)
1148 modelbuilder
.toolcontext
.info
("{mpropdef} redefines method {mprop.full_name}", 3)
1152 redef fun build_signature
(modelbuilder
, nclassdef
)
1154 var mpropdef
= self.mpropdef
1155 if mpropdef
== null then return # Error thus skiped
1156 var mmodule
= mpropdef
.mclassdef
.mmodule
1157 var nsig
= self.n_signature
1159 # Retrieve info from the signature AST
1160 var param_names
= new Array[String] # Names of parameters from the AST
1161 var param_types
= new Array[MType] # Types of parameters from the AST
1162 var vararg_rank
= -1
1163 var ret_type
: nullable MType = null # Return type from the AST
1164 if nsig
!= null then
1165 if not nsig
.visit_signature
(modelbuilder
, nclassdef
) then return
1166 param_names
= nsig
.param_names
1167 param_types
= nsig
.param_types
1168 vararg_rank
= nsig
.vararg_rank
1169 ret_type
= nsig
.ret_type
1172 # Look for some signature to inherit
1173 # FIXME: do not inherit from the intro, but from the most specific
1174 var msignature
: nullable MSignature = null
1175 if not mpropdef
.is_intro
then
1176 msignature
= mpropdef
.mproperty
.intro
.msignature
1177 if msignature
== null then return # Skip error
1179 # Check inherited signature arity
1180 if param_names
.length
!= msignature
.arity
then
1182 if nsig
!= null then node
= nsig
else node
= self
1183 modelbuilder
.error
(node
, "Redef error: {mpropdef} redefines {mpropdef.mproperty.intro} with {param_names.length} parameter(s), {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1186 else if mpropdef
.mproperty
.is_init
then
1187 # FIXME UGLY: inherit signature from a super-constructor
1188 for msupertype
in nclassdef
.mclassdef
.supertypes
do
1189 msupertype
= msupertype
.anchor_to
(mmodule
, nclassdef
.mclassdef
.bound_mtype
)
1190 var candidate
= modelbuilder
.try_get_mproperty_by_name2
(self, mmodule
, msupertype
, mpropdef
.mproperty
.name
)
1191 if candidate
!= null then
1192 if msignature
== null then
1193 msignature
= candidate
.intro
.as(MMethodDef).msignature
1200 # Inherit the signature
1201 if msignature
!= null and param_names
.length
!= param_types
.length
and param_names
.length
== msignature
.arity
and param_types
.length
== 0 then
1202 # Parameters are untyped, thus inherit them
1203 param_types
= new Array[MType]
1204 for mparameter
in msignature
.mparameters
do
1205 param_types
.add
(mparameter
.mtype
)
1207 vararg_rank
= msignature
.vararg_rank
1209 if msignature
!= null and ret_type
== null then
1210 ret_type
= msignature
.return_mtype
1213 if param_names
.length
!= param_types
.length
then
1214 # Some parameters are typed, other parameters are not typed.
1215 modelbuilder
.error
(nsig
.n_params
[param_types
.length
], "Error: Untyped parameter `{param_names[param_types.length]}'.")
1219 var mparameters
= new Array[MParameter]
1220 for i
in [0..param_names
.length
[ do
1221 var mparameter
= new MParameter(param_names
[i
], param_types
[i
], i
== vararg_rank
)
1222 mparameters
.add
(mparameter
)
1225 msignature
= new MSignature(mparameters
, ret_type
)
1226 mpropdef
.msignature
= msignature
1228 if nsig
!= null then
1229 for nclosure
in nsig
.n_closure_decls
do
1230 var clos_signature
= nclosure
.n_signature
.build_signature
(modelbuilder
, nclassdef
)
1231 if clos_signature
== null then return
1232 var mparameter
= new MParameter(nclosure
.n_id
.text
, clos_signature
, false)
1233 msignature
.mclosures
.add
(mparameter
)
1239 redef fun check_signature
(modelbuilder
, nclassdef
)
1241 var mpropdef
= self.mpropdef
1242 if mpropdef
== null then return # Error thus skiped
1243 var mmodule
= mpropdef
.mclassdef
.mmodule
1244 var nsig
= self.n_signature
1245 var mysignature
= self.mpropdef
.msignature
1246 if mysignature
== null then return # Error thus skiped
1248 # Lookup for signature in the precursor
1249 # FIXME all precursors should be considered
1250 if not mpropdef
.is_intro
then
1251 var msignature
= mpropdef
.mproperty
.intro
.msignature
1252 if msignature
== null then return
1254 var precursor_ret_type
= msignature
.return_mtype
1255 var ret_type
= mysignature
.return_mtype
1256 if ret_type
!= null and precursor_ret_type
== null then
1257 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1261 if mysignature
.arity
> 0 then
1262 # Check parameters types
1263 for i
in [0..mysignature
.arity
[ do
1264 var myt
= mysignature
.mparameters
[i
].mtype
1265 var prt
= msignature
.mparameters
[i
].mtype
1266 if not myt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, prt
) and
1267 not prt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, myt
) then
1268 modelbuilder
.error
(nsig
.n_params
[i
], "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1272 if precursor_ret_type
!= null then
1273 if ret_type
== null then
1274 # Inherit the return type
1275 ret_type
= precursor_ret_type
1276 else if not ret_type
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, precursor_ret_type
) then
1277 modelbuilder
.error
(nsig
.n_type
.as(not null), "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1284 redef class AAttrPropdef
1285 # The associated MAttributeDef once build by a `ModelBuilder'
1286 var mpropdef
: nullable MAttributeDef
1287 # The associated getter (read accessor) if any
1288 var mreadpropdef
: nullable MMethodDef
1289 # The associated setter (write accessor) if any
1290 var mwritepropdef
: nullable MMethodDef
1291 redef fun build_property
(modelbuilder
, nclassdef
)
1293 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1294 var mclass
= mclassdef
.mclass
1297 if self.n_id
!= null then
1298 name
= self.n_id
.text
1300 name
= self.n_id2
.text
1303 if mclass
.kind
== interface_kind
or mclassdef
.mclass
.kind
== enum_kind
then
1304 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the interface {mclass}.")
1305 else if mclass
.kind
== enum_kind
then
1306 modelbuilder
.error
(self, "Error: Attempt to define attribute {name} in the enum class {mclass}.")
1311 # Old attribute style
1312 var mprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, name
)
1313 if mprop
== null then
1314 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1315 mprop
= new MAttribute(mclassdef
, name
, mvisibility
)
1316 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, false, mprop
) then return
1318 assert mprop
isa MAttribute
1319 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1320 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, true, mprop
) then return
1322 nclassdef
.mprop2npropdef
[mprop
] = self
1324 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1325 self.mpropdef
= mpropdef
1326 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1328 var nreadable
= self.n_readable
1329 if nreadable
!= null then
1330 var readname
= name
.substring_from
(1)
1331 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, readname
).as(nullable MMethod)
1332 if mreadprop
== null then
1333 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nreadable
.n_visibility
)
1334 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1335 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, nreadable
.n_kwredef
, false, mreadprop
) then return
1337 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, nreadable
.n_kwredef
, true, mreadprop
) then return
1338 check_redef_property_visibility
(modelbuilder
, nclassdef
, nreadable
.n_visibility
, mreadprop
)
1340 nclassdef
.mprop2npropdef
[mreadprop
] = self
1342 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1343 self.mreadpropdef
= mreadpropdef
1344 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1347 var nwritable
= self.n_writable
1348 if nwritable
!= null then
1349 var writename
= name
.substring_from
(1) + "="
1350 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid
, mclassdef
, writename
).as(nullable MMethod)
1351 if mwriteprop
== null then
1352 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
)
1353 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1354 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, nwritable
.n_kwredef
, false, mwriteprop
) then return
1356 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, nwritable
.n_kwredef
, true, mwriteprop
) then return
1357 check_redef_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
, mwriteprop
)
1359 nclassdef
.mprop2npropdef
[mwriteprop
] = self
1361 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1362 self.mwritepropdef
= mwritepropdef
1363 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1366 # New attribute style
1367 var nid2
= self.n_id2
.as(not null)
1368 var mprop
= new MAttribute(mclassdef
, "@" + name
, none_visibility
)
1369 var mpropdef
= new MAttributeDef(mclassdef
, mprop
, self.location
)
1370 self.mpropdef
= mpropdef
1371 modelbuilder
.mpropdef2npropdef
[mpropdef
] = self
1374 var mreadprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, readname
).as(nullable MMethod)
1375 if mreadprop
== null then
1376 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1377 mreadprop
= new MMethod(mclassdef
, readname
, mvisibility
)
1378 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, false, mreadprop
) then return
1380 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, n_kwredef
, true, mreadprop
) then return
1381 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mreadprop
)
1383 nclassdef
.mprop2npropdef
[mreadprop
] = self
1385 var mreadpropdef
= new MMethodDef(mclassdef
, mreadprop
, self.location
)
1386 self.mreadpropdef
= mreadpropdef
1387 modelbuilder
.mpropdef2npropdef
[mreadpropdef
] = self
1389 var writename
= name
+ "="
1390 var nwritable
= self.n_writable
1391 var mwriteprop
= modelbuilder
.try_get_mproperty_by_name
(nid2
, mclassdef
, writename
).as(nullable MMethod)
1392 var nwkwredef
: nullable Token = null
1393 if nwritable
!= null then nwkwredef
= nwritable
.n_kwredef
1394 if mwriteprop
== null then
1396 if nwritable
!= null then
1397 mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
)
1399 mvisibility
= private_visibility
1401 mwriteprop
= new MMethod(mclassdef
, writename
, mvisibility
)
1402 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, nwkwredef
, false, mwriteprop
) then return
1404 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, nwkwredef
, true, mwriteprop
) then return
1405 if nwritable
!= null then
1406 check_redef_property_visibility
(modelbuilder
, nclassdef
, nwritable
.n_visibility
, mwriteprop
)
1409 nclassdef
.mprop2npropdef
[mwriteprop
] = self
1411 var mwritepropdef
= new MMethodDef(mclassdef
, mwriteprop
, self.location
)
1412 self.mwritepropdef
= mwritepropdef
1413 modelbuilder
.mpropdef2npropdef
[mwritepropdef
] = self
1417 redef fun build_signature
(modelbuilder
, nclassdef
)
1419 var mpropdef
= self.mpropdef
1420 if mpropdef
== null then return # Error thus skiped
1421 var mmodule
= mpropdef
.mclassdef
.mmodule
1422 var mtype
: nullable MType = null
1424 var ntype
= self.n_type
1425 if ntype
!= null then
1426 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1427 if mtype
== null then return
1430 if mtype
== null then
1431 var nexpr
= self.n_expr
1432 if nexpr
!= null then
1433 if nexpr
isa ANewExpr then
1434 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, nexpr
.n_type
)
1435 else if nexpr
isa AIntExpr then
1436 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Int")
1437 if cla
!= null then mtype
= cla
.mclass_type
1438 else if nexpr
isa AFloatExpr then
1439 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Float")
1440 if cla
!= null then mtype
= cla
.mclass_type
1441 else if nexpr
isa ACharExpr then
1442 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Char")
1443 if cla
!= null then mtype
= cla
.mclass_type
1444 else if nexpr
isa ABoolExpr then
1445 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "Bool")
1446 if cla
!= null then mtype
= cla
.mclass_type
1447 else if nexpr
isa ASuperstringExpr then
1448 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1449 if cla
!= null then mtype
= cla
.mclass_type
1450 else if nexpr
isa AStringFormExpr then
1451 var cla
= modelbuilder
.try_get_mclass_by_name
(nexpr
, mmodule
, "String")
1452 if cla
!= null then mtype
= cla
.mclass_type
1454 modelbuilder
.error
(self, "Error: Untyped attribute {mpropdef}. Implicit typing allowed only for literals and new.")
1458 modelbuilder
.error
(self, "Error: Untyped attribute {mpropdef}")
1462 if mtype
== null then return
1464 mpropdef
.static_mtype
= mtype
1466 var mreadpropdef
= self.mreadpropdef
1467 if mreadpropdef
!= null then
1468 var msignature
= new MSignature(new Array[MParameter], mtype
)
1469 mreadpropdef
.msignature
= msignature
1472 var msritepropdef
= self.mwritepropdef
1473 if mwritepropdef
!= null then
1475 if n_id
!= null then
1476 name
= n_id
.text
.substring_from
(1)
1480 var mparameter
= new MParameter(name
, mtype
, false)
1481 var msignature
= new MSignature([mparameter
], null)
1482 mwritepropdef
.msignature
= msignature
1486 redef fun check_signature
(modelbuilder
, nclassdef
)
1488 var mpropdef
= self.mpropdef
1489 if mpropdef
== null then return # Error thus skiped
1490 var mmodule
= mpropdef
.mclassdef
.mmodule
1491 var ntype
= self.n_type
1492 var mtype
= self.mpropdef
.static_mtype
1493 if mtype
== null then return # Error thus skiped
1495 # Lookup for signature in the precursor
1496 # FIXME all precursors should be considered
1497 if not mpropdef
.is_intro
then
1498 var precursor_type
= mpropdef
.mproperty
.intro
.static_mtype
1499 if precursor_type
== null then return
1501 if mtype
!= precursor_type
then
1502 modelbuilder
.error
(ntype
.as(not null), "Redef Error: Wrong static type. found {mtype}, expected {precursor_type}.")
1507 # Check getter and setter
1508 var meth
= self.mreadpropdef
1509 if meth
!= null then self.check_method_signature
(modelbuilder
, nclassdef
, meth
)
1510 meth
= self.mwritepropdef
1511 if meth
!= null then self.check_method_signature
(modelbuilder
, nclassdef
, meth
)
1514 private fun check_method_signature
(modelbuilder
: ModelBuilder, nclassdef
: AClassdef, mpropdef
: MMethodDef)
1516 var mmodule
= mpropdef
.mclassdef
.mmodule
1517 var nsig
= self.n_type
1518 var mysignature
= mpropdef
.msignature
1519 if mysignature
== null then return # Error thus skiped
1521 # Lookup for signature in the precursor
1522 # FIXME all precursors should be considered
1523 if not mpropdef
.is_intro
then
1524 var msignature
= mpropdef
.mproperty
.intro
.msignature
1525 if msignature
== null then return
1527 if mysignature
.arity
!= msignature
.arity
then
1529 if nsig
!= null then node
= nsig
else node
= self
1530 modelbuilder
.error
(node
, "Redef Error: {mysignature.arity} parameters found, {msignature.arity} expected. Signature is {mpropdef}{msignature}")
1533 var precursor_ret_type
= msignature
.return_mtype
1534 var ret_type
= mysignature
.return_mtype
1535 if ret_type
!= null and precursor_ret_type
== null then
1537 if nsig
!= null then node
= nsig
else node
= self
1538 modelbuilder
.error
(node
, "Redef Error: {mpropdef.mproperty} is a procedure, not a function.")
1542 if mysignature
.arity
> 0 then
1543 # Check parameters types
1544 for i
in [0..mysignature
.arity
[ do
1545 var myt
= mysignature
.mparameters
[i
].mtype
1546 var prt
= msignature
.mparameters
[i
].mtype
1547 if not myt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, prt
) and
1548 not prt
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, myt
) then
1550 if nsig
!= null then node
= nsig
else node
= self
1551 modelbuilder
.error
(node
, "Redef Error: Wrong type for parameter `{mysignature.mparameters[i].name}'. found {myt}, expected {prt}.")
1555 if precursor_ret_type
!= null then
1556 if ret_type
== null then
1557 # Inherit the return type
1558 ret_type
= precursor_ret_type
1559 else if not ret_type
.is_subtype
(mmodule
, nclassdef
.mclassdef
.bound_mtype
, precursor_ret_type
) then
1561 if nsig
!= null then node
= nsig
else node
= self
1562 modelbuilder
.error
(node
, "Redef Error: Wrong return type. found {ret_type}, expected {precursor_ret_type}.")
1569 redef class ATypePropdef
1570 # The associated MVirtualTypeDef once build by a `ModelBuilder'
1571 var mpropdef
: nullable MVirtualTypeDef
1572 redef fun build_property
(modelbuilder
, nclassdef
)
1574 var mclassdef
= nclassdef
.mclassdef
.as(not null)
1575 var name
= self.n_id
.text
1576 var mprop
= modelbuilder
.try_get_mproperty_by_name
(self.n_id
, mclassdef
, name
)
1577 if mprop
== null then
1578 var mvisibility
= new_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
)
1579 mprop
= new MVirtualTypeProp(mclassdef
, name
, mvisibility
)
1580 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, false, mprop
) then return
1582 if not self.check_redef_keyword
(modelbuilder
, nclassdef
, self.n_kwredef
, true, mprop
) then return
1583 assert mprop
isa MVirtualTypeProp
1584 check_redef_property_visibility
(modelbuilder
, nclassdef
, self.n_visibility
, mprop
)
1586 nclassdef
.mprop2npropdef
[mprop
] = self
1588 var mpropdef
= new MVirtualTypeDef(mclassdef
, mprop
, self.location
)
1589 self.mpropdef
= mpropdef
1592 redef fun build_signature
(modelbuilder
, nclassdef
)
1594 var mpropdef
= self.mpropdef
1595 if mpropdef
== null then return # Error thus skiped
1596 var mmodule
= mpropdef
.mclassdef
.mmodule
1597 var mtype
: nullable MType = null
1599 var ntype
= self.n_type
1600 mtype
= modelbuilder
.resolve_mtype
(nclassdef
, ntype
)
1601 if mtype
== null then return
1603 mpropdef
.bound
= mtype
1604 # print "{mpropdef}: {mtype}"
1607 redef fun check_signature
(modelbuilder
, nclassdef
)
1609 var bound
= self.mpropdef
.bound
1611 # Fast case: the bound is not a formal type
1612 if not bound
isa MVirtualType then return
1614 var mmodule
= nclassdef
.mclassdef
.mmodule
1615 var anchor
= nclassdef
.mclassdef
.bound_mtype
1617 # Slow case: progress on each resolution until: (i) we loop, or (ii) we found a non formal type
1618 var seen
= [self.mpropdef
.mproperty
.mvirtualtype
]
1620 if seen
.has
(bound
) then
1622 modelbuilder
.error
(self, "Error: circularity of virtual type definition: {seen.join(" -> ")}")
1626 var next
= bound
.lookup_bound
(mmodule
, anchor
)
1627 if not next
isa MVirtualType then return