345 lines
9.7 KiB
V
345 lines
9.7 KiB
V
// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module main
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import os
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import os.cmdline
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import rand
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import v.ast
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import v.pref
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import v.fmt
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import v.util
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import v.parser
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import v.table
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import vhelp
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struct FormatOptions {
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is_l bool
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is_c bool // NB: This refers to the '-c' fmt flag, NOT the C backend
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is_w bool
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is_diff bool
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is_verbose bool
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is_all bool
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is_debug bool
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is_noerror bool
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is_verify bool // exit(1) if the file is not vfmt'ed
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is_worker bool // true *only* in the worker processes. NB: workers can crash.
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}
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const (
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formatted_file_token = '\@\@\@' + 'FORMATTED_FILE: '
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vtmp_folder = util.get_vtmp_folder()
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)
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fn main() {
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// if os.getenv('VFMT_ENABLE') == '' {
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// eprintln('v fmt is disabled for now')
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// exit(1)
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// }
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toolexe := os.executable()
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util.set_vroot_folder(os.dir(os.dir(os.dir(toolexe))))
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args := util.join_env_vflags_and_os_args()
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mut foptions := FormatOptions{
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is_c: '-c' in args
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is_l: '-l' in args
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is_w: '-w' in args
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is_diff: '-diff' in args
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is_verbose: '-verbose' in args || '--verbose' in args
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is_all: '-all' in args || '--all' in args
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is_worker: '-worker' in args
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is_debug: '-debug' in args
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is_noerror: '-noerror' in args
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is_verify: '-verify' in args
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}
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if foptions.is_verbose {
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eprintln('vfmt foptions: $foptions')
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}
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if foptions.is_worker {
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// -worker should be added by a parent vfmt process.
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// We launch a sub process for each file because
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// the v compiler can do an early exit if it detects
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// a syntax error, but we want to process ALL passed
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// files if possible.
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foptions.format_file(cmdline.option(args, '-worker', ''))
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exit(0)
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}
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// we are NOT a worker at this stage, i.e. we are a parent vfmt process
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possible_files := cmdline.only_non_options(cmdline.options_after(args, ['fmt']))
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if foptions.is_verbose {
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eprintln('vfmt toolexe: $toolexe')
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eprintln('vfmt args: ' + os.args.str())
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eprintln('vfmt env_vflags_and_os_args: ' + args.str())
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eprintln('vfmt possible_files: ' + possible_files.str())
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}
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mut files := []string{}
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for file in possible_files {
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if os.is_dir(file) {
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files << os.walk_ext(file, '.v')
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files << os.walk_ext(file, '.vsh')
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continue
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}
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if !file.ends_with('.v') && !file.ends_with('.vv') && !file.ends_with('.vsh') {
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verror('v fmt can only be used on .v files.\nOffending file: "$file"')
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continue
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}
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if !os.exists(file) {
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verror('"$file" does not exist')
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continue
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}
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files << file
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}
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if is_atty(0) == 0 && files.len == 0 {
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foptions.format_pipe()
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exit(0)
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}
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if files.len == 0 || '-help' in args || '--help' in args {
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vhelp.show_topic('fmt')
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exit(0)
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}
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mut cli_args_no_files := []string{}
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for a in os.args {
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if a !in files {
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cli_args_no_files << a
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}
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}
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mut errors := 0
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for file in files {
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fpath := os.real_path(file)
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mut worker_command_array := cli_args_no_files.clone()
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worker_command_array << ['-worker', util.quote_path(fpath)]
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worker_cmd := worker_command_array.join(' ')
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if foptions.is_verbose {
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eprintln('vfmt worker_cmd: $worker_cmd')
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}
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worker_result := os.exec(worker_cmd) or {
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errors++
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continue
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}
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// Guard against a possibly crashing worker process.
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if worker_result.exit_code != 0 {
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eprintln(worker_result.output)
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if worker_result.exit_code == 1 {
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eprintln('vfmt error while formatting file: $file .')
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}
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errors++
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continue
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}
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if worker_result.output.len > 0 {
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if worker_result.output.contains(formatted_file_token) {
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wresult := worker_result.output.split(formatted_file_token)
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formatted_warn_errs := wresult[0]
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formatted_file_path := wresult[1].trim_right('\n\r')
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foptions.post_process_file(fpath, formatted_file_path) or { errors = errors + 1 }
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if formatted_warn_errs.len > 0 {
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eprintln(formatted_warn_errs)
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}
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continue
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}
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}
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errors++
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}
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if errors > 0 {
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eprintln('Encountered a total of: $errors errors.')
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if foptions.is_noerror {
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exit(0)
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}
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if foptions.is_verify {
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exit(1)
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}
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if foptions.is_c {
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exit(2)
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}
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}
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}
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fn (foptions &FormatOptions) format_file(file string) {
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mut prefs := pref.new_preferences()
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prefs.is_fmt = true
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if foptions.is_verbose {
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eprintln('vfmt2 running fmt.fmt over file: $file')
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}
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table := table.new_table()
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// checker := checker.new_checker(table, prefs)
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file_ast := parser.parse_file(file, table, .parse_comments, prefs, &ast.Scope{
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parent: 0
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})
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// checker.check(file_ast)
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formatted_content := fmt.fmt(file_ast, table, prefs, foptions.is_debug)
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file_name := os.file_name(file)
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ulid := rand.ulid()
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vfmt_output_path := os.join_path(vtmp_folder, 'vfmt_${ulid}_$file_name')
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os.write_file(vfmt_output_path, formatted_content) or { panic(err) }
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if foptions.is_verbose {
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eprintln('fmt.fmt worked and $formatted_content.len bytes were written to $vfmt_output_path .')
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}
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eprintln('$formatted_file_token$vfmt_output_path')
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}
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fn (foptions &FormatOptions) format_pipe() {
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mut prefs := pref.new_preferences()
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prefs.is_fmt = true
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if foptions.is_verbose {
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eprintln('vfmt2 running fmt.fmt over stdin')
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}
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input_text := os.get_raw_lines_joined()
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table := table.new_table()
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// checker := checker.new_checker(table, prefs)
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file_ast := parser.parse_text(input_text, '', table, .parse_comments, prefs, &ast.Scope{
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parent: 0
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})
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// checker.check(file_ast)
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formatted_content := fmt.fmt(file_ast, table, prefs, foptions.is_debug)
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print(formatted_content)
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if foptions.is_verbose {
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eprintln('fmt.fmt worked and $formatted_content.len bytes were written to stdout.')
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}
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}
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fn print_compiler_options(compiler_params &pref.Preferences) {
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eprintln(' os: ' + compiler_params.os.str())
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eprintln(' ccompiler: $compiler_params.ccompiler')
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eprintln(' path: $compiler_params.path ')
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eprintln(' out_name: $compiler_params.out_name ')
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eprintln(' vroot: $compiler_params.vroot ')
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eprintln('lookup_path: $compiler_params.lookup_path ')
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eprintln(' out_name: $compiler_params.out_name ')
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eprintln(' cflags: $compiler_params.cflags ')
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eprintln(' is_test: $compiler_params.is_test ')
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eprintln(' is_script: $compiler_params.is_script ')
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}
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fn (foptions &FormatOptions) post_process_file(file string, formatted_file_path string) ? {
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if formatted_file_path.len == 0 {
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return
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}
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if foptions.is_diff {
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diff_cmd := util.find_working_diff_command() or {
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eprintln(err)
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return
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}
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if foptions.is_verbose {
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eprintln('Using diff command: $diff_cmd')
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}
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println(util.color_compare_files(diff_cmd, file, formatted_file_path))
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return
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}
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if foptions.is_verify {
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diff_cmd := util.find_working_diff_command() or {
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eprintln(err)
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return
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}
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x := util.color_compare_files(diff_cmd, file, formatted_file_path)
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if x.len != 0 {
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println("$file is not vfmt'ed")
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return error('')
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}
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return
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}
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fc := os.read_file(file) or {
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eprintln('File $file could not be read')
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return
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}
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formatted_fc := os.read_file(formatted_file_path) or {
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eprintln('File $formatted_file_path could not be read')
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return
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}
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is_formatted_different := fc != formatted_fc
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if foptions.is_c {
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if is_formatted_different {
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eprintln('File is not formatted: $file')
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return error('')
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}
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return
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}
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if foptions.is_l {
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if is_formatted_different {
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eprintln('File needs formatting: $file')
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}
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return
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}
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if foptions.is_w {
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if is_formatted_different {
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os.mv_by_cp(formatted_file_path, file) or { panic(err) }
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eprintln('Reformatted file: $file')
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} else {
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eprintln('Already formatted file: $file')
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}
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return
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}
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print(formatted_fc)
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}
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fn (f FormatOptions) str() string {
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return
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'FormatOptions{ is_l: $f.is_l, is_w: $f.is_w, is_diff: $f.is_diff, is_verbose: $f.is_verbose,' +
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' is_all: $f.is_all, is_worker: $f.is_worker, is_debug: $f.is_debug, is_noerror: $f.is_noerror,' +
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' is_verify: $f.is_verify" }'
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}
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fn file_to_mod_name_and_is_module_file(file string) (string, bool) {
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mut mod_name := 'main'
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mut is_module_file := false
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flines := read_source_lines(file) or { return mod_name, is_module_file }
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for fline in flines {
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line := fline.trim_space()
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if line.starts_with('module ') {
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if !line.starts_with('module main') {
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is_module_file = true
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mod_name = line.replace('module ', ' ').trim_space()
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}
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break
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}
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}
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return mod_name, is_module_file
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}
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fn read_source_lines(file string) ?[]string {
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source_lines := os.read_lines(file) or { return error('can not read $file') }
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return source_lines
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}
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fn get_compile_name_of_potential_v_project(file string) string {
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// This function get_compile_name_of_potential_v_project returns:
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// a) the file's folder, if file is part of a v project
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// b) the file itself, if the file is a standalone v program
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pfolder := os.real_path(os.dir(file))
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// a .v project has many 'module main' files in one folder
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// if there is only one .v file, then it must be a standalone
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all_files_in_pfolder := os.ls(pfolder) or { panic(err) }
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mut vfiles := []string{}
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for f in all_files_in_pfolder {
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vf := os.join_path(pfolder, f)
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if f.starts_with('.') || !f.ends_with('.v') || os.is_dir(vf) {
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continue
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}
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vfiles << vf
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}
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if vfiles.len == 1 {
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return file
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}
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// /////////////////////////////////////////////////////////////
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// At this point, we know there are many .v files in the folder
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// We will have to read them all, and if there are more than one
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// containing `fn main` then the folder contains multiple standalone
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// v programs. If only one contains `fn main` then the folder is
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// a project folder, that should be compiled with `v pfolder`.
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mut main_fns := 0
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for f in vfiles {
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slines := read_source_lines(f) or { panic(err) }
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for line in slines {
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if line.contains('fn main()') {
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main_fns++
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if main_fns > 1 {
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return file
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}
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}
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}
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}
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return pfolder
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}
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fn verror(s string) {
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util.verror('vfmt error', s)
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}
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