aranega · May 27, 2025 07:52 · Jun 8, 2021 · Jun 8, 2021 · Jun 8, 2021
diff --git a/genplantuml.py → plantumlgen.py b/genplantuml.py → plantumlgen.py
diff --git a/gistfile1.txt → genplantuml.py b/gistfile1.txt → genplantuml.py
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,85 @@
+from pyecore.resources import ResourceSet
+from pyecore.utils import dispatch
+import pyecore.ecore as ecore
+
+
+class PlantUMLSwitch(object):
+    def __init__(self):
+        self.visited = set()
+
+    @dispatch
+    def generate(self, o):
+        print('Object kind unsupported', o.eClass.name)
+
+    @generate.register(ecore.EPackage)
+    def epackage_switch(self, p):
+        print('package', p.name, '{')
+        for classif in p.eClassifiers:
+            self.generate(classif)
+        print('}')
+
+    @generate.register(ecore.EClass)
+    def eclass_switch(self, o):
+        kind = 'interface' if o.interface else 'class'
+        print(kind, o.name, '{')
+        for attrib in o.eAttributes:
+            self.generate(attrib)
+        print('}')
+        for sclass in o.eSuperTypes:
+            print(sclass.name, '<|--', o.name)
+        for ref in o.eReferences:
+            self.generate(ref)
+
+    @generate.register(ecore.EAttribute)
+    def eattribute_switch(self, a):
+        print('\t', a.name, ':', a.eType.name)
+
+    @generate.register(ecore.EReference)
+    def ereference_switch(self, ref):
+        if ref in self.visited:
+            return
+        self.visited.add(ref)
+        label = f"{ref.name} {ref.lower}..{'*' if ref.many else ref.upper}"
+        link = "--"
+        if ref.containment:
+            link = '*' + link
+        o_label = ""
+        if ref.eOpposite:
+            o = ref.eOpposite
+            self.visited.add(o)
+            o_label = f"{o.name} {o.lower}..{'*' if o.many else o.upper}"
+            if o.containment:
+                link += '*'
+            print(f'{ref.eContainer().name} "{label}" {link} "{o_label}" {ref.eType.name}')
+        else:
+            link += '>'
+            print(f'{ref.eContainer().name} "{label}" {link} {ref.eType.name}')
+
+    @generate.register(ecore.EEnum)
+    def enum_switch(self, o):
+        print('enum', o.name, '{')
+        for literal in o.eLiterals:
+            print(literal.name)
+        print('}')
+
+    @generate.register(ecore.EDataType)
+    def edatatype_switch(self, o):
+        print('class', o.name, '<< (D,orchid) EDataType>>')
+
+
+def generate(mm):
+    print('@startuml')
+    switch = PlantUMLSwitch()
+    switch.generate(mm)
+    print('@enduml')
+
+
+if __name__ == '__main__':
+    import sys
+    if len(sys.argv) < 2:
+        print(f"Usage: {sys.argv[0]} ecore_file")
+        sys.exit(1)
+    rset = ResourceSet()
+    metamodel_resource = rset.get_resource(sys.argv[1])
+    root = metamodel_resource.contents[0]
+    generate(root)