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.
32 lines
796 B
C
32 lines
796 B
C
/*
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* lex.c — character-level helpers for 6a's line-oriented parser.
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* The parser itself lives in parse.c; here we keep the tokenisers
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* for identifiers and numbers so parse.c stays focused on syntax.
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*/
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#include "a.h"
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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int
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a_isidstart(int c)
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{
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return c == '_' || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
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}
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int
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a_isidcont(int c)
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{
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return a_isidstart(c) || (c >= '0' && c <= '9') || c == '.';
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}
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i64
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a_parsenum(const char *s, char **end)
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{
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/* Let strtoll handle the sign itself: hand-stripping '-' then
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* negating the result fails for LLONG_MIN because the positive
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* magnitude (2^63) doesn't fit in long long, strtoll clamps to
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* LLONG_MAX, and the negation lands one short. */
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return (i64)strtoll(s, end, 0);
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}
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