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Make minor improvements

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This commit is contained in:
Justine Tunney 2020-12-19 11:21:04 -08:00
parent 1fc91f3580
commit b562d6fdb3
41 changed files with 1948 additions and 92 deletions
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25
third_party/chibicc/unicode.c vendored
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@ -61,8 +61,11 @@ uint32_t decode_utf8(char **new_pos, char *p) {
}
static bool in_range(uint32_t *range, uint32_t c) {
for (int i = 0; range[i] != -1; i += 2)
if (range[i] <= c && c <= range[i + 1]) return true;
for (int i = 0; range[i] != -1; i += 2) {
if (range[i] <= c && c <= range[i + 1]) {
return true;
}
}
return false;
}
@ -78,7 +81,6 @@ static bool in_range(uint32_t *range, uint32_t c) {
// (U+3000, full-width space) are allowed because they are out of range.
bool is_ident1(uint32_t c) {
static uint32_t range[] = {
'a', 'z', 'A', 'Z', '_', '_', '$', '$',
0x00A8, 0x00A8, 0x00AA, 0x00AA, 0x00AD, 0x00AD, 0x00AF, 0x00AF,
0x00B2, 0x00B5, 0x00B7, 0x00BA, 0x00BC, 0x00BE, 0x00C0, 0x00D6,
0x00D8, 0x00F6, 0x00F8, 0x00FF, 0x0100, 0x02FF, 0x0370, 0x167F,
@ -93,17 +95,26 @@ bool is_ident1(uint32_t c) {
0xA0000, 0xAFFFD, 0xB0000, 0xBFFFD, 0xC0000, 0xCFFFD, 0xD0000, 0xDFFFD,
0xE0000, 0xEFFFD, -1,
};
return in_range(range, c);
if (c < 128) {
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '_' ||
c == '$';
} else {
return in_range(range, c);
}
}
// Returns true if a given character is acceptable as a non-first
// character of an identifier.
bool is_ident2(uint32_t c) {
static uint32_t range[] = {
'0', '9', '$', '$', 0x0300, 0x036F, 0x1DC0,
0x1DFF, 0x20D0, 0x20FF, 0xFE20, 0xFE2F, -1,
0x0300, 0x036F, 0x1DC0, 0x1DFF, 0x20D0, 0x20FF, 0xFE20, 0xFE2F, -1,
};
return is_ident1(c) || in_range(range, c);
if (is_ident1(c)) return true;
if (c < 128) {
return '0' <= c && c <= '9';
} else {
return in_range(range, c);
}
}
// Returns the number of columns needed to display a given