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v/cmd/tools/vwhere/finder.v

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module main
import os
import term
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import regex
import os.cmdline
// Finder is entity that contains all the logic
struct Finder {
mut:
symbol Symbol
visib Visibility
mutab Mutability
name string
modul string
receiver string
dirs []string
matches []Match
}
fn (mut fdr Finder) configure_from_arguments(args []string) {
match args.len {
1 {
fdr.name = args[0]
}
else {
fdr.symbol.set_from_str(args[0])
if fdr.symbol == .method && !args[1].contains('.') {
make_and_print_error('method require a special notation:', [
'Receiver.method',
], '${args[1]}')
} else if fdr.symbol == .method {
temp_args := args[1].split('.')
fdr.receiver = temp_args[0]
fdr.name = temp_args[1]
} else {
fdr.name = args[1]
}
if fdr.name.contains('-') {
make_and_print_error('It seems you forgot positional arg name:', [], fdr.name)
}
fdr.visib.set_from_str(cmdline.option(args, '-vis', '${Visibility.all}'))
if fdr.symbol == .var && fdr.visib != .all {
make_and_print_error('-vis $fdr.visib just can be setted with symbol_type:',
['fn', 'method', 'const', 'struct', 'enum', 'interface', 'regexp'],
'$fdr.symbol')
}
fdr.mutab.set_from_str(cmdline.option(args, '-mut', '${Mutability.any}'))
if fdr.symbol != .var && fdr.mutab != .any {
make_and_print_error('-mut $fdr.mutab just can be setted with symbol_type:',
['var'], '$fdr.symbol')
}
fdr.modul = cmdline.option(args, '-mod', '')
fdr.dirs = cmdline.options(args, '-dir')
}
}
}
fn (mut fdr Finder) search_for_matches() {
// Define where search
mut recursive := true
mut paths_to_search := []string{}
if fdr.dirs.len == 0 && fdr.modul == '' {
paths_to_search << [current_dir, vmod_dir]
if vlib_dir !in paths_to_search {
paths_to_search << vlib_dir
}
paths_to_search << vmod_paths
} else if fdr.dirs.len == 0 && fdr.modul != '' {
paths_to_search << if fdr.modul == 'main' { current_dir } else { resolve_module(fdr.modul) or {
panic(err)} }
} else if fdr.dirs.len != 0 && fdr.modul == '' {
recursive = false
paths_to_search << fdr.dirs.map(resolve_module(it) or { panic(err) })
} else {
recursive = false
paths_to_search << if fdr.modul == 'main' { current_dir } else { resolve_module(fdr.modul) or {
panic(err)} }
paths_to_search << fdr.dirs.map(resolve_module(it) or { panic(err) })
}
// for p in paths_to_search {
// println(p)
// }
mut files_to_search := []string{}
for path in paths_to_search {
files_to_search << collect_v_files(path, recursive) or { panic(err) }
}
// for f in files_to_search {
// println(f)
// }
// Auxiliar rgx
sp := r'\s*'
op := r'\('
cp := r'\)'
// Build regex query
sy := '$fdr.symbol'
st := if fdr.receiver != '' { '$sp$op$sp[a-z].*$sp$fdr.receiver$cp$sp' } else { '.*' }
na := '$fdr.name'
query := match fdr.symbol {
.@fn {
'.*$sy$sp$na$sp${op}.*${cp}.*'
}
.method {
'.*fn$st$na$sp${op}.*${cp}.*'
}
.var {
'.*$na$sp:=.*'
}
.@const {
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'.*$na$sp = .*'
}
.regexp {
'$na'
}
else {
'.*$sy$sp$na${sp}.*' // for struct, enum and interface
}
}
// println(query)
for file in files_to_search {
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fdr.search_within_file(file, query)
}
}
fn (mut fdr Finder) search_within_file(file string, query string) {
mut re := regex.regex_opt(query) or { panic(err) }
lines := os.read_lines(file) or { panic(err) }
mut const_found := if fdr.symbol == .@const { false } else { true }
mut n_line := 1
for line in lines {
match fdr.visib {
.all {
if line.contains('const (') {
const_found = true
}
}
.@pub {
if line.contains('pub const (') {
const_found = true
}
}
.pri {
if line.contains('const (') && !line.contains('pub') {
const_found = true
}
}
}
if re.matches_string(line) && (const_found || line.contains('const')) {
words := line.split(' ').filter(it != '').map(it.trim('\t'))
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match fdr.visib {
.all {}
.@pub {
if 'pub' !in words && fdr.symbol != .@const {
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continue
}
}
.pri {
if 'pub' in words && fdr.symbol != .@const {
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continue
}
}
}
match fdr.mutab {
.any {}
.yes {
if 'mut' !in words {
continue
}
}
.not {
if 'mut' in words {
continue
}
}
}
fdr.matches << Match{file, n_line, words.join(' ').trim(' {')}
}
if line.starts_with(')') && fdr.symbol == .@const {
const_found = false
}
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n_line++
}
}
fn (fdr Finder) show_results() {
if fdr.matches.len < 1 && (verbose || header) {
print(fdr)
println(maybe_color(term.bright_yellow, 'No Matches found'))
} else if verbose || header {
print(fdr)
println(maybe_color(term.bright_green, '$fdr.matches.len matches Found\n'))
for result in fdr.matches {
result.show()
}
} else {
for result in fdr.matches {
result.show()
}
}
}
fn (fdr Finder) str() string {
v := maybe_color(term.bright_red, '$fdr.visib')
m := maybe_color(term.bright_red, '$fdr.mutab')
st := if fdr.receiver != '' { ' ( _ $fdr.receiver)' } else { '' }
s := maybe_color(term.bright_magenta, '$fdr.symbol')
n := maybe_color(term.bright_cyan, '$fdr.name')
mm := if fdr.modul != '' { maybe_color(term.blue, '$fdr.modul') } else { '' }
dd := if fdr.dirs.len != 0 {
fdr.dirs.map(maybe_color(term.blue, it))
} else {
fdr.dirs
}
dm := if fdr.dirs.len == 0 && fdr.modul == '' {
'all the project scope'
} else if fdr.dirs.len == 0 && fdr.modul != '' {
'module $mm'
} else if fdr.dirs.len != 0 && fdr.modul == '' {
'directories: $dd'
} else {
'module $mm searching within directories: $dd'
}
return '\nFind: $s$st $n | visibility: $v mutability: $m\nwithin $dm '
}
// Match is one result of the search_for_matches() process
struct Match {
path string [required]
line int [required]
text string [required]
}
fn (mtc Match) show() {
path := maybe_color(term.bright_magenta, mtc.path)
line := maybe_color(term.bright_yellow, '$mtc.line')
text := maybe_color(term.bright_green, '$mtc.text')
if verbose || format {
println('$path\n$line : [ $text ]\n')
} else {
println('$path:$line: $text')
}
}