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>
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
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/* Grammar subroutines needed by parser */
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#include "Python.h"
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#include "pgenheaders.h"
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#include "grammar.h"
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#include "token.h"
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/* Return the DFA for the given type */
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dfa *
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PyGrammar_FindDFA(grammar *g, register int type)
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{
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register dfa *d;
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#if 1
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/* Massive speed-up */
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d = &g->g_dfa[type - NT_OFFSET];
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assert(d->d_type == type);
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return d;
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#else
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/* Old, slow version */
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register int i;
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for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) {
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if (d->d_type == type)
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return d;
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}
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assert(0);
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/* NOTREACHED */
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#endif
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}
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char *
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PyGrammar_LabelRepr(label *lb)
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{
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static char buf[100];
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if (lb->lb_type == ENDMARKER)
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return "EMPTY";
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else if (ISNONTERMINAL(lb->lb_type)) {
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if (lb->lb_str == NULL) {
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PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type);
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return buf;
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}
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else
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return lb->lb_str;
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}
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else {
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if (lb->lb_str == NULL)
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return _PyParser_TokenNames[lb->lb_type];
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else {
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PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)",
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_PyParser_TokenNames[lb->lb_type], lb->lb_str);
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return buf;
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}
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}
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}
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