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typedef struct StringView {
char *start;
size_t n;
} StringView;
char
sv_next(StringView *sv) {
if (sv->n == 0) {
return '\0';
}
char c = sv->start[0];
sv->start++;
sv->n--;
return c;
}
char
sv_peek(const StringView *sv) {
if (sv->n == 0) {
return '\0';
}
return sv->start[0];
}
bool
sv_equal(const StringView *a, const StringView *b) {
if (a->n != b->n) {
return false;
}
for (size_t i = 0; i < a->n; i++) {
if (a->start[i] != b->start[i]) {
return false;
}
}
return true;
}
void
sv_write(const StringView *sv, FILE *file) {
for (size_t i = 0; i < sv->n; i++) {
putc(sv->start[i], file);
}
}
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