Merge: Enforce namespace rules
[nit.git] / src / modelize / modelize_class.nit
index ed4df60..8a49296 100644 (file)
@@ -20,6 +20,7 @@ module modelize_class
 import modelbuilder
 
 redef class ToolContext
+       # Run `AModule::build_classes` on each module
        var modelize_class_phase: Phase = new ModelizeClassPhase(self, null)
 end
 
@@ -44,6 +45,7 @@ redef class ModelBuilder
                var nvisibility: nullable AVisibility
                var mvisibility: nullable MVisibility
                var arity = 0
+               var names = new Array[String]
                if nclassdef isa AStdClassdef then
                        name = nclassdef.n_id.text
                        nkind = nclassdef.n_classkind
@@ -58,6 +60,21 @@ redef class ModelBuilder
                                error(nvisibility, "Error: intrude is not a legal visibility for classes.")
                                return
                        end
+                       # Collect formal parameter names
+                       for i in [0..arity[ do
+                               var nfd = nclassdef.n_formaldefs[i]
+                               var ptname = nfd.n_id.text
+                               if names.has(ptname) then
+                                       error(nfd, "Error: A formal parameter type `{ptname}' already exists")
+                                       return
+                               end
+                               for c in ptname.chars do if c >= 'a' and c<= 'z' then
+                                       warning(nfd, "formal-type-name", "Warning: lowercase in the formal parameter type {ptname}")
+                                       break
+                               end
+                               names.add(ptname)
+                       end
+
                else if nclassdef isa ATopClassdef then
                        name = "Object"
                        nkind = null
@@ -80,7 +97,19 @@ redef class ModelBuilder
                                error(nclassdef, "Redef error: No imported class {name} to refine.")
                                return
                        end
-                       mclass = new MClass(mmodule, name, arity, mkind, mvisibility)
+
+                       # Check for conflicting class full-names in the project
+                       if mmodule.mgroup != null and mvisibility >= protected_visibility then
+                               var mclasses = model.get_mclasses_by_name(name)
+                               if mclasses != null then for other in mclasses do
+                                       if other.intro_mmodule.mgroup != null and other.intro_mmodule.mgroup.mproject == mmodule.mgroup.mproject then
+                                               error(nclassdef, "Error: A class named `{other.full_name}` is already defined in module `{other.intro_mmodule}` at {other.intro.location}.")
+                                               break
+                                       end
+                               end
+                       end
+
+                       mclass = new MClass(mmodule, name, names, mkind, mvisibility)
                        #print "new class {mclass}"
                else if nclassdef isa AStdClassdef and nmodule.mclass2nclassdef.has_key(mclass) then
                        error(nclassdef, "Error: A class {name} is already defined at line {nmodule.mclass2nclassdef[mclass].location.line_start}.")
@@ -88,7 +117,7 @@ redef class ModelBuilder
                else if nclassdef isa AStdClassdef and nclassdef.n_kwredef == null then
                        error(nclassdef, "Redef error: {name} is an imported class. Add the redef keyword to refine it.")
                        return
-               else if mclass.arity != arity then
+               else if arity != 0 and mclass.arity != arity then
                        error(nclassdef, "Redef error: Formal parameter arity missmatch; got {arity}, expected {mclass.arity}.")
                        return
                else if nkind != null and mkind != concrete_kind and mclass.kind != mkind then
@@ -121,35 +150,29 @@ redef class ModelBuilder
                        return
                end
 
-               var names = new Array[String]
                var bounds = new Array[MType]
                if nclassdef isa AStdClassdef and mclass.arity > 0 then
-                       # Collect formal parameter names
+                       # Revolve bound for formal parameters
                        for i in [0..mclass.arity[ do
-                               var nfd = nclassdef.n_formaldefs[i]
-                               var ptname = nfd.n_id.text
-                               if names.has(ptname) then
-                                       error(nfd, "Error: A formal parameter type `{ptname}' already exists")
-                                       return
-                               end
-                               for c in ptname.chars do if c >= 'a' and c<= 'z' then
-                                       warning(nfd, "formal-type-name", "Warning: lowercase in the formal parameter type {ptname}")
-                                       break
+                               if nclassdef.n_formaldefs.is_empty then
+                                       # Inherit the bound
+                                       var bound = mclass.intro.bound_mtype.arguments[i]
+                                       bounds.add(bound)
+                                       continue
                                end
-                               names.add(ptname)
-                               nfd.mtype = mclass.mclass_type.arguments[i].as(MParameterType)
-                       end
 
-                       # Revolve bound for formal parameter names
-                       for i in [0..mclass.arity[ do
                                var nfd = nclassdef.n_formaldefs[i]
+                               var pname = mclass.mparameters[i].name
+                               if nfd.n_id.text != pname then
+                                       error(nfd.n_id, "Error: Formal parameter type #{i} `{nfd.n_id.text}` must be named `{pname}' as in the original definition in module `{mclass.intro.mmodule}`.")
+                               end
                                var nfdt = nfd.n_type
                                if nfdt != null then
                                        var bound = resolve_mtype_unchecked(mmodule, null, nfdt, false)
                                        if bound == null then return # Forward error
                                        if bound.need_anchor then
                                                # No F-bounds!
-                                               error(nfd, "Error: Formal parameter type `{names[i]}' bounded with a formal parameter type")
+                                               error(nfd, "Error: Formal parameter type `{pname}' bounded with a formal parameter type")
                                        else
                                                bounds.add(bound)
                                                nfd.bound = bound
@@ -158,6 +181,10 @@ redef class ModelBuilder
                                                warning(nfdt, "useless-bound", "Warning: Useless formal parameter type since `{bound}` cannnot have subclasses.")
                                        end
                                else if mclass.mclassdefs.is_empty then
+                                       if objectclass == null then
+                                               error(nfd, "Error: Formal parameter type `{pname}' unbounded but no Object class exist.")
+                                               return
+                                       end
                                        # No bound, then implicitely bound by nullable Object
                                        var bound = objectclass.mclass_type.as_nullable
                                        bounds.add(bound)
@@ -172,7 +199,7 @@ redef class ModelBuilder
                end
 
                var bound_mtype = mclass.get_mtype(bounds)
-               var mclassdef = new MClassDef(mmodule, bound_mtype, nclassdef.location, names)
+               var mclassdef = new MClassDef(mmodule, bound_mtype, nclassdef.location)
                nclassdef.mclassdef = mclassdef
                self.mclassdef2nclassdef[mclassdef] = nclassdef
 
@@ -182,6 +209,8 @@ redef class ModelBuilder
                                var mdoc = ndoc.to_mdoc
                                mclassdef.mdoc = mdoc
                                mdoc.original_mentity = mclassdef
+                       else if mclassdef.is_intro and mclass.visibility >= public_visibility then
+                               advice(nclassdef, "missing-doc", "Documentation warning: Undocumented public class `{mclass}`")
                        end
                end
 
@@ -246,7 +275,6 @@ redef class ModelBuilder
        private fun check_supertypes(nmodule: AModule, nclassdef: AClassdef)
        do
                var mmodule = nmodule.mmodule.as(not null)
-               var objectclass = try_get_mclass_by_name(nmodule, mmodule, "Object")
                var mclass = nclassdef.mclass.as(not null)
                var mclassdef = nclassdef.mclassdef.as(not null)
 
@@ -267,9 +295,8 @@ redef class ModelBuilder
                nmodule.build_classes_is_done = true
                var mmodule = nmodule.mmodule.as(not null)
                for imp in mmodule.in_importation.direct_greaters do
-
-                       if not mmodule2nmodule.has_key(imp) then continue
-                       build_classes(mmodule2nmodule[imp])
+                       var nimp = mmodule2node(imp)
+                       if nimp != null then build_classes(nimp)
                end
 
                if errcount != toolcontext.error_count then return
@@ -396,9 +423,8 @@ redef class ModelBuilder
                end
        end
 
-       # Register the nclassdef associated to each mclassdef
-       # FIXME: why not refine the `MClassDef` class with a nullable attribute?
-       var mclassdef2nclassdef: HashMap[MClassDef, AClassdef] = new HashMap[MClassDef, AClassdef]
+       # Registration of the nclassdef associated to each mclassdef
+       private var mclassdef2nclassdef = new HashMap[MClassDef, AClassdef]
 
        # Return the static type associated to the node `ntype`.
        # `mmodule` and `mclassdef` is the context where the call is made (used to understand formal types)
@@ -424,19 +450,19 @@ redef class ModelBuilder
                end
 
                # Check parameter type
-               if mclassdef != null and mclassdef.parameter_names.has(name) then
-                       if not ntype.n_types.is_empty then
-                               error(ntype, "Type error: formal type {name} cannot have formal parameters.")
-                       end
-                       for i in [0..mclassdef.parameter_names.length[ do
-                               if mclassdef.parameter_names[i] == name then
-                                       res = mclassdef.mclass.mclass_type.arguments[i]
-                                       if ntype.n_kwnullable != null then res = res.as_nullable
-                                       ntype.mtype = res
-                                       return res
+               if mclassdef != null then
+                       for p in mclassdef.mclass.mparameters do
+                               if p.name != name then continue
+
+                               if not ntype.n_types.is_empty then
+                                       error(ntype, "Type error: formal type {name} cannot have formal parameters.")
                                end
+
+                               res = p
+                               if ntype.n_kwnullable != null then res = res.as_nullable
+                               ntype.mtype = res
+                               return res
                        end
-                       abort
                end
 
                # Check class