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Change \UXXXXXXXX -> \UXXXXXX and check codepoint max.

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No need to add two extra leading zeros, as the max unicode
codepoint is 0x10FFFF.
This commit is contained in:
Calvin Rose
2020-04-05 07:09:53 -05:00
parent 810ef7401c
commit 87ecdb8112
3 changed files with 9 additions and 5 deletions
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6
src/core/parse.c
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@@ -273,6 +273,10 @@ static int escapeu(JanetParser *p, JanetParseState *state, uint8_t c) {
state->argn = (state->argn << 4) + digit;
state->counter--;
if (!state->counter) {
if (state->argn > 0x10FFFF) {
p->error = "invalid unicode codepoint";
return 1;
}
write_codepoint(p, state->argn);
state->argn = 0;
state->consumer = stringchar;
@@ -291,7 +295,7 @@ static int escape1(JanetParser *p, JanetParseState *state, uint8_t c) {
state->argn = 0;
state->consumer = escapeh;
} else if (c == 'u' || c == 'U') {
state->counter = c == 'u' ? 4 : 8;
state->counter = c == 'u' ? 4 : 6;
state->argn = 0;
state->consumer = escapeu;
} else {