forked from Ports/goldeneye-pc-port
James Dansereau
52539d10de
- README, LICENSE (MIT for the port layer), NOTICE, CONTRIBUTING. - Restructure docs: internals.md, porting-notes.md, dev-process.md + dev/agentic-development.md (the research write-up), dev/ (raw record). - Replace decomp status-badge CI with a PC-port validate workflow. - Remove session/agent scaffolding and stale planning docs from the tree. - Add .gitattributes (normalize line endings to LF); add screenshots. The pre-2026-08 history is the GoldenEye 007 decompilation by Larry Ficken (KholdFuzion) and contributors, preserved unchanged. The PC-port work from 2026-08-17 on is mine.
47 lines
2.0 KiB
C
47 lines
2.0 KiB
C
/*
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* PC port shim for include/CPPLib.h (see docs/internals.md §11 D9).
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*
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* CPPLib's emptiness test pastes its argument into a macro name:
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*
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* #define IS_EMPTY(x) _IS_EMPTY(x)
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* #define _IS_EMPTY(x) IS_PROBE(CAT(_IS_EMPTY, _##x##_))
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*
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* The `_##x##_` paste hard-errors in GCC when x is not a single identifier —
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* e.g. a pp-number like `0.1` (PROPFILERECORD's SCALE argument: "pasting '_'
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* and '0.1' does not give a valid preprocessing token") or a multi-token
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* expression. IDO evidently tolerated the failed paste.
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*
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* After macro-argument expansion, the original test is exactly "is the token
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* sequence empty?": only `_IS_EMPTY__` (the empty case) is defined as PROBE,
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* every other pasted name is undefined and yields 0. This shim replaces
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* IS_EMPTY with a paste-free variant that computes the same result for zero-
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* and single-argument calls:
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*
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* IS_EMPTY() -> 1 (empty argument)
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* IS_EMPTY(<anything>) -> 0
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*
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* Multi-argument calls (only reachable through SWITCH(), which is not used on
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* the port — see D7) are undefined here, as they were only ever meaningful
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* under IDO. NOT/DEFINED/IS_BOOL keep their original paste form: every active
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* port call site passes them a single token (0/1, an identifier, or empty),
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* which pastes cleanly. If a new one does not, extend this shim the same way.
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*
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* All in-tree includes of CPPLib.h are angle-bracketed, so this file
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* (first on the include path) intercepts them. Idempotent under repeated
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* inclusion. Inert in the N64 build (no -DPORT): pure pass-through.
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*/
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#if defined(PORT)
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#include "include/CPPLib.h"
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#undef IS_EMPTY
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#define IS_EMPTY(...) _PORT_IS_EMPTY_SEL(__VA_ARGS__, ~, _PORT_IS_EMPTY_N, _PORT_IS_EMPTY_0)()
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/* Pick the 3rd parameter: with zero content args the sentinels shift it to
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* _PORT_IS_EMPTY_0; with one or more content args it is _PORT_IS_EMPTY_N. */
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#define _PORT_IS_EMPTY_SEL(a, b, f, ...) f
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#define _PORT_IS_EMPTY_0() 1
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#define _PORT_IS_EMPTY_N(x, ...) 0
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#else
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#include "include/CPPLib.h"
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#endif
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