python,util: Pull enum hh|cc generation out of the MetaEnum class.

Change-Id: Ibfcc2d6916318ffef806f74e57e3f8360489efb6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/49452
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/python/m5/params.py

@@ -1318,146 +1318,6 @@ class MetaEnum(MetaParamValue):
 
         super().__init__(name, bases, init_dict)
 
-    # Generate C++ class declaration for this enum type.
-    # Note that we wrap the enum in a class/struct to act as a namespace,
-    # so that the enum strings can be brief w/o worrying about collisions.
-    def cxx_decl(cls, code):
-        wrapper_name = cls.wrapper_name
-        wrapper = 'struct' if cls.wrapper_is_struct else 'namespace'
-        name = cls.__name__ if cls.enum_name is None else cls.enum_name
-        idem_macro = '__ENUM__%s__%s__' % (wrapper_name, name)
-
-        code('''\
-#ifndef $idem_macro
-#define $idem_macro
-
-namespace gem5
-{
-''')
-        if cls.is_class:
-            code('''\
-enum class $name
-{
-''')
-        else:
-            code('''\
-$wrapper $wrapper_name {
-    enum $name
-    {
-''')
-            code.indent(1)
-        code.indent(1)
-        for val in cls.vals:
-            code('$val = ${{cls.map[val]}},')
-        code('Num_$name = ${{len(cls.vals)}}')
-        code.dedent(1)
-        code('};')
-
-        if cls.is_class:
-            code('''\
-extern const char *${name}Strings[static_cast<int>(${name}::Num_${name})];
-''')
-        elif cls.wrapper_is_struct:
-            code('static const char *${name}Strings[Num_${name}];')
-        else:
-            code('extern const char *${name}Strings[Num_${name}];')
-
-        if not cls.is_class:
-            code.dedent(1)
-            code('}; // $wrapper_name')
-
-        code()
-        code('} // namespace gem5')
-
-        code()
-        code('#endif // $idem_macro')
-
-    def cxx_def(cls, code):
-        wrapper_name = cls.wrapper_name
-        file_name = cls.__name__
-        name = cls.__name__ if cls.enum_name is None else cls.enum_name
-
-        code('#include "base/compiler.hh"')
-        code('#include "enums/$file_name.hh"')
-
-        code()
-        code('namespace gem5')
-        code('{')
-        code()
-
-        if cls.wrapper_is_struct:
-            code('const char *${wrapper_name}::${name}Strings'
-                '[Num_${name}] =')
-        else:
-            if cls.is_class:
-                code('''\
-const char *${name}Strings[static_cast<int>(${name}::Num_${name})] =
-''')
-            else:
-                code('''GEM5_DEPRECATED_NAMESPACE(Enums, enums);
-namespace enums
-{''')
-                code.indent(1)
-                code('const char *${name}Strings[Num_${name}] =')
-
-        code('{')
-        code.indent(1)
-        for val in cls.vals:
-            code('"$val",')
-        code.dedent(1)
-        code('};')
-
-        if not cls.wrapper_is_struct and not cls.is_class:
-            code.dedent(1)
-            code('} // namespace enums')
-
-        code('} // namespace gem5')
-
-
-    def pybind_def(cls, code):
-        name = cls.__name__
-        enum_name = cls.__name__ if cls.enum_name is None else cls.enum_name
-        wrapper_name = enum_name if cls.is_class else cls.wrapper_name
-
-        code('''#include "pybind11/pybind11.h"
-#include "pybind11/stl.h"
-
-#include <sim/init.hh>
-
-namespace py = pybind11;
-
-namespace gem5
-{
-
-static void
-module_init(py::module_ &m_internal)
-{
-    py::module_ m = m_internal.def_submodule("enum_${name}");
-
-''')
-        if cls.is_class:
-            code('py::enum_<${enum_name}>(m, "enum_${name}")')
-        else:
-            code('py::enum_<${wrapper_name}::${enum_name}>(m, "enum_${name}")')
-
-        code.indent()
-        code.indent()
-        for val in cls.vals:
-            code('.value("${val}", ${wrapper_name}::${val})')
-        code('.value("Num_${name}", ${wrapper_name}::Num_${enum_name})')
-        if not cls.is_class:
-            code('.export_values()')
-        code(';')
-        code.dedent()
-
-        code('}')
-        code.dedent()
-        code()
-        code('static EmbeddedPyBind embed_enum("enum_${name}", module_init);')
-        code()
-        code('} // namespace gem5')
-
-
 # Base class for enum types.
 class Enum(ParamValue, metaclass=MetaEnum):
     vals = []