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>
67 lines
1.0 KiB
C
67 lines
1.0 KiB
C
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/* Bitset primitives used by the parser generator */
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#include "pgenheaders.h"
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#include "bitset.h"
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bitset
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newbitset(int nbits)
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{
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int nbytes = NBYTES(nbits);
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bitset ss = (char *)PyObject_MALLOC(sizeof(BYTE) * nbytes);
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if (ss == NULL)
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Py_FatalError("no mem for bitset");
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ss += nbytes;
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while (--nbytes >= 0)
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*--ss = 0;
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return ss;
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}
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void
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delbitset(bitset ss)
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{
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PyObject_FREE(ss);
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}
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int
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addbit(bitset ss, int ibit)
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{
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int ibyte = BIT2BYTE(ibit);
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BYTE mask = BIT2MASK(ibit);
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if (ss[ibyte] & mask)
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return 0; /* Bit already set */
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ss[ibyte] |= mask;
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return 1;
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}
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#if 0 /* Now a macro */
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int
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testbit(bitset ss, int ibit)
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{
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return (ss[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0;
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}
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#endif
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int
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samebitset(bitset ss1, bitset ss2, int nbits)
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{
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int i;
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for (i = NBYTES(nbits); --i >= 0; )
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if (*ss1++ != *ss2++)
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return 0;
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return 1;
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}
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void
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mergebitset(bitset ss1, bitset ss2, int nbits)
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{
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int i;
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for (i = NBYTES(nbits); --i >= 0; )
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*ss1++ |= *ss2++;
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}
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