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