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lib/re1.5: Add support for named classes in class sets.

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Total code size change of this and previous commit:

   bare-arm:    +0 +0.000%
minimal x86:    +0 +0.000%
   unix x64:   +32 +0.004% standard
      stm32:   +24 +0.006% PYBV10
     cc3200:   +16 +0.009%
    esp8266:   +20 +0.003% GENERIC
      esp32:   +44 +0.003% GENERIC[incl +8(data)]
     mimxrt:   +32 +0.009% TEENSY40
 renesas-ra:   +24 +0.004% RA6M2_EK
        nrf:    +0 +0.000% pca10040
        rp2:   +24 +0.005% PICO
       samd:   +32 +0.012% ADAFRUIT_ITSYBITSY_M4_EXPRESS

Addresses issue #7920.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2021-10-22 22:23:47 +11:00
parent bd86ce5f82
commit 64193c7de9
3 changed files with 20 additions and 4 deletions
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13
lib/re1.5/compilecode.c
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@@ -66,14 +66,21 @@ static const char *_compilecode(const char *re, ByteProg *prog, int sizecode)
PC++; // Skip # of pair byte
prog->len++;
for (cnt = 0; *re != ']'; re++, cnt++) {
if (*re == '\\') {
char c = *re;
if (c == '\\') {
++re;
c = *re;
if (MATCH_NAMED_CLASS_CHAR(c)) {
c = RE15_CLASS_NAMED_CLASS_INDICATOR;
goto emit_char_pair;
}
}
if (!*re) return NULL;
EMIT(PC++, *re);
if (!c) return NULL;
if (re[1] == '-' && re[2] != ']') {
re += 2;
}
emit_char_pair:
EMIT(PC++, c);
EMIT(PC++, *re);
}
EMIT_CHECKED(term + 1, cnt);