Hojun-Cho
1657bdeda3
C bootstrap (phases 0-9):
cmd/wwc, cmd/6c, cmd/6a, cmd/6l, cmd/ww, rt, lib/*.
ww-side self-host (phase 10):
selfhost/cmd/wwc — ww-cgen frontend; bootstrap fixed point.
selfhost/cmd/6a — assembler; byte-identical to C 6a (test 991).
selfhost/cmd/6l — linker w/ archive (.a) support; byte-identical
to C 6l (test 992).
selfhost/cmd/ww — driver (build/run/version); byte-identical to
C ww (test 993).
make test: 15/15. make bootstrap: ww2.s == ww3.s, ww2.o == ww3.o,
ww2 == ww3 byte-identical, with the full ww-tooled chain.
15 lines
409 B
Plaintext
15 lines
409 B
Plaintext
// encoding/utf8 — UTF-8 helpers. RFC 3629; we only handle the legal
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// subset (no over-long encodings, no surrogates).
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def MAX: rune = 1114111; // 0x10FFFF
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def BAD: rune = -1;
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export fn runelen(r: rune) i32 = {
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if (r < 0) { return -1; };
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if (r < 128) { return 1; };
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if (r < 2048) { return 2; };
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if (r < 65536) { return 3; };
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if (r <= MAX) { return 4; };
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return -1;
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};
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