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v/vlib/regex/regex_opt.v

35 lines
950 B
V

module regex
import strings
// compile_opt compile RE pattern string
pub fn (mut re RE) compile_opt(pattern string) ? {
re_err,err_pos := re.impl_compile(pattern)
if re_err != compile_ok {
mut err_msg := strings.new_builder(300)
err_msg.write("query: $pattern\n")
line := "-".repeat(err_pos)
err_msg.write("err : ${line}^\n")
err_str := re.get_parse_error_string(re_err)
err_msg.write("ERROR: $err_str\n")
return error_with_code(err_msg.str(), re_err)
}
}
// new_regex create a RE of small size, usually sufficient for ordinary use
pub fn new() RE {
return impl_new_regex_by_size(1)
}
// new_regex_by_size create a RE of large size, mult specify the scale factor of the memory that will be allocated
pub fn new_by_size(mult int) RE {
return impl_new_regex_by_size(mult)
}
// regex_opt create new RE object from RE pattern string
pub fn regex_opt(pattern string) ?RE {
mut re := new()
re.compile_opt(pattern)?
return re
}