port 2P step 1: vendor CPython 2.7.18 as the mtpython static library

The embedded 40250 script layer needs its own interpreter on five platforms. 2.7 is end-of-life, so nothing can be fetched from the target SDKs and the source is vendored (official 2.7.18 tarball, trimmed to 25MB; Lib/ stays for step 3's python27.zip). cpython-2.7.18/CMakeLists.txt builds one `mtpython` static library from exactly the 133 objects the reference libpython2.7.a contains, off by default behind -DMTGODOT_EMBED_PYTHON=ON. The source list and the built-in module table (config/config.c, 39 entries) are shared; pyconfig.h is a probe result and is not, so each platform keeps its own under config/<platform>/, regenerated by tools/py_embed/gen_pyconfig.sh and checked against the shared table. Three vendor patches, documented in docs/THIRD-PARTY.md: configure/configure.ac learn arm64 on macOS, and posixmodule.c undefines the process-control calls it hard-defines past pyconfig.h when building for iOS. macOS (ctest python.embed: every builtin imports, codecs and pickle work off the vendored Lib/), Android arm64 and iOS arm64 build. Linux needs a Linux host and Windows needs a MinGW-vs-MSVC decision; both are noted for step 4. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-23 08:27:35 +09:00
parent a9b31dec67
commit 5fad769ee8
1018 changed files with 652582 additions and 19 deletions
@@ -0,0 +1,110 @@
+"""Python version compatibility support for minidom."""
+
+# This module should only be imported using "import *".
+#
+# The following names are defined:
+#
+#   NodeList      -- lightest possible NodeList implementation
+#
+#   EmptyNodeList -- lightest possible NodeList that is guaranteed to
+#                    remain empty (immutable)
+#
+#   StringTypes   -- tuple of defined string types
+#
+#   defproperty   -- function used in conjunction with GetattrMagic;
+#                    using these together is needed to make them work
+#                    as efficiently as possible in both Python 2.2+
+#                    and older versions.  For example:
+#
+#                        class MyClass(GetattrMagic):
+#                            def _get_myattr(self):
+#                                return something
+#
+#                        defproperty(MyClass, "myattr",
+#                                    "return some value")
+#
+#                    For Python 2.2 and newer, this will construct a
+#                    property object on the class, which avoids
+#                    needing to override __getattr__().  It will only
+#                    work for read-only attributes.
+#
+#                    For older versions of Python, inheriting from
+#                    GetattrMagic will use the traditional
+#                    __getattr__() hackery to achieve the same effect,
+#                    but less efficiently.
+#
+#                    defproperty() should be used for each version of
+#                    the relevant _get_<property>() function.
+
+__all__ = ["NodeList", "EmptyNodeList", "StringTypes", "defproperty"]
+
+import xml.dom
+
+try:
+    unicode
+except NameError:
+    StringTypes = type(''),
+else:
+    StringTypes = type(''), type(unicode(''))
+
+
+class NodeList(list):
+    __slots__ = ()
+
+    def item(self, index):
+        if 0 <= index < len(self):
+            return self[index]
+
+    def _get_length(self):
+        return len(self)
+
+    def _set_length(self, value):
+        raise xml.dom.NoModificationAllowedErr(
+            "attempt to modify read-only attribute 'length'")
+
+    length = property(_get_length, _set_length,
+                      doc="The number of nodes in the NodeList.")
+
+    # For backward compatibility
+    def __setstate__(self, state):
+        if state is None:
+            state = []
+        self[:] = state
+
+
+class EmptyNodeList(tuple):
+    __slots__ = ()
+
+    def __add__(self, other):
+        NL = NodeList()
+        NL.extend(other)
+        return NL
+
+    def __radd__(self, other):
+        NL = NodeList()
+        NL.extend(other)
+        return NL
+
+    def item(self, index):
+        return None
+
+    def _get_length(self):
+        return 0
+
+    def _set_length(self, value):
+        raise xml.dom.NoModificationAllowedErr(
+            "attempt to modify read-only attribute 'length'")
+
+    length = property(_get_length, _set_length,
+                      doc="The number of nodes in the NodeList.")
+
+
+def defproperty(klass, name, doc):
+    get = getattr(klass, ("_get_" + name)).im_func
+    def set(self, value, name=name):
+        raise xml.dom.NoModificationAllowedErr(
+            "attempt to modify read-only attribute " + repr(name))
+    assert not hasattr(klass, "_set_" + name), \
+           "expected not to find _set_" + name
+    prop = property(get, set, doc=doc)
+    setattr(klass, name, prop)