shenleiandClaude Opus 5
5fad769ee8
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>
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
"""Check for errs in the AST.
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The Python parser does not catch all syntax errors. Others, like
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assignments with invalid targets, are caught in the code generation
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phase.
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The compiler package catches some errors in the transformer module.
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But it seems clearer to write checkers that use the AST to detect
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errors.
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"""
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from compiler import ast, walk
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def check(tree, multi=None):
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v = SyntaxErrorChecker(multi)
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walk(tree, v)
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return v.errors
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class SyntaxErrorChecker:
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"""A visitor to find syntax errors in the AST."""
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def __init__(self, multi=None):
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"""Create new visitor object.
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If optional argument multi is not None, then print messages
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for each error rather than raising a SyntaxError for the
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first.
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"""
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self.multi = multi
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self.errors = 0
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def error(self, node, msg):
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self.errors = self.errors + 1
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if self.multi is not None:
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print "%s:%s: %s" % (node.filename, node.lineno, msg)
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else:
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raise SyntaxError, "%s (%s:%s)" % (msg, node.filename, node.lineno)
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def visitAssign(self, node):
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# the transformer module handles many of these
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pass
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## for target in node.nodes:
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## if isinstance(target, ast.AssList):
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## if target.lineno is None:
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## target.lineno = node.lineno
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## self.error(target, "can't assign to list comprehension")
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