Add generate.py to generate enum declarations into tests/py/dcl.enum/

close #95

Author: Ukilele

CMakeLists.txt

@@ -189,7 +189,6 @@ if (MRDOX_BUILD_TESTS)
     target_link_libraries(mrdox-test PRIVATE mrdox-api ${llvm_libs})
     target_include_directories(mrdox-test PRIVATE ${PROJECT_SOURCE_DIR}/source/tests)
     add_test(NAME mrdox-test COMMAND mrdox-test
-        "${PROJECT_SOURCE_DIR}/tests/n4944"
         "${PROJECT_SOURCE_DIR}/tests/old-tests"
     )
     source_group(TREE ${PROJECT_SOURCE_DIR} PREFIX "" FILES CMakeLists.txt)

tests/generate.py

@@ -0,0 +1,43 @@
+#! python3
+
+import exrex
+import os
+
+def ToplevelFolder():
+    scriptPath = os.path.realpath(__file__)
+    parentDirectory = os.path.dirname(scriptPath)
+    return os.path.join(parentDirectory, "py")
+
+def EnumDeclarationsFolder():
+    return os.path.join(ToplevelFolder(), "dcl.enum")
+
+
+def GenerateEnumDeclarations():
+    #https://eel.is/c++draft/enum
+    enum_base = "(|: short|: unsigned int|: const long|: const volatile long long|: decltype\(0\))"
+    enumerator_initializer = "(| = 0| = true \? 1,2 : 3| = \!\+\[\]\(\)\{\})"
+    enumerators = " (|(A" + enumerator_initializer + "|A" + enumerator_initializer + ", B " + enumerator_initializer + "),?) "
+    regex = "enum (|EnumName|class EnumName|struct EnumName) " + enum_base + " (\{" + enumerators + "\})? ;"
+    generator = exrex.generate(regex)
+    declarations = list(generator)
+    # Unfortunately, the regex produces some invalid declarations. We remove them by hand as of now.
+    for invalidDeclaration in ["enum    ;", "enum  : short  ;", "enum  : unsigned int  ;",
+                               "enum  : const long  ;", "enum  : const volatile long long  ;",
+                               "enum  : decltype(0)  ;", "enum EnumName   ;"]:
+        try:
+            declarations.remove(invalidDeclaration)
+        except ValueError:
+            print("The invalid declaration \"" + invalidDeclaration + "\" gets no longer generated, so it can be removed from the list of invalid declarations.")
+    return declarations
+
+
+def GenerateIndexedCppFiles(parentDirectory, fileContents):
+    os.makedirs(parentDirectory, exist_ok=True)
+    for index, aDeclaration in enumerate(fileContents):
+        fileName = str(index) + ".cpp"
+        filePath = os.path.join(parentDirectory, fileName)
+        with open(filePath, "w") as f:
+            f.write(aDeclaration)
+
+
+GenerateIndexedCppFiles(EnumDeclarationsFolder(), GenerateEnumDeclarations())