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v/cmd/tools/measure/scanner_speed.v

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import os
import time
import v.scanner
import v.pref
fn main() {
files := os.args#[1..]
if files.len > 0 && files[0].starts_with('@') {
lst_path := files[0].all_after('@')
listed_files := os.read_file(lst_path)!.split('\n')
process_files(listed_files)!
return
}
process_files(files)!
}
fn process_files(files []string) ! {
mut pref := pref.new_preferences()
pref.is_fmt = true
pref.skip_warnings = true
pref.output_mode = .silent
mut sw := time.new_stopwatch()
mut total_us := i64(0)
mut total_bytes := i64(0)
mut total_tokens := i64(0)
for f in files {
if f == '' {
continue
}
if f.ends_with('_test.v') {
continue
}
sw.restart()
s := scanner.new_scanner_file(f, .skip_comments, pref)!
f_us := sw.elapsed().microseconds()
total_us += f_us
total_bytes += s.text.len
total_tokens += s.all_tokens.len
println('${f_us:10}us ${s.all_tokens.len:10} ${s.text.len:10} ${(f64(s.text.len) / s.all_tokens.len):7.3f} ${f}')
}
println('${total_us:10}us ${total_tokens:10} ${total_bytes:10} ${(f64(total_tokens) / total_bytes):7.3f} | speed: ${(f64(total_bytes) / total_us):2.5f} MB/s')
}