v/v.v

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// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
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module main
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import (
compiler
benchmark
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os
filepath
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// time
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)
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const (
known_commands = ['run', 'build', 'version', 'doc']
simple_tools = ['fmt', 'up', 'create', 'test', 'test-compiler', 'build-tools', 'build-examples', 'build-vbinaries']
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)
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fn main() {
is_verbose := '-verbose' in os.args || '--verbose' in os.args
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// t := time.ticks()
// defer { println(time.ticks() - t) }
args := compiler.env_vflags_and_os_args()
options, command := compiler.get_v_options_and_main_command( args )
if is_verbose {
eprintln('v args: $args')
eprintln('v command: $command')
eprintln('v options: $options')
}
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// external tool
if command in simple_tools {
compiler.launch_tool('v' + command)
return
}
// v run, v doc, etc
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if !command.starts_with('-') && !command.ends_with('.v') && !os.exists(command) {
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v_command(command, args)
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}
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// Print the version and exit.
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if '-v' in options || '--version' in options {
version_hash := compiler.vhash()
println('V $compiler.Version $version_hash')
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return
}
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else if '-h' in options || '--help' in options {
println(compiler.help_text)
return
}
// No args? REPL
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else if command == '' || (args.len == 2 && args[1] == '-') {
compiler.launch_tool('vrepl')
return
}
// Construct the V object from command line arguments
mut v := compiler.new_v(args)
if v.pref.is_verbose {
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println(args)
}
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if command == 'run' {
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// always recompile for now, too error prone to skip recompilation otherwise
// for example for -repl usage, especially when piping lines to v
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v.compile()
v.run_compiled_executable_and_exit()
}
mut tmark := benchmark.new_benchmark()
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if v.pref.x64 {
v.compile_x64()
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}
else {
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v.compile()
}
if v.pref.is_stats {
tmark.stop()
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println('compilation took: ' + tmark.total_duration().str() + 'ms')
}
if v.pref.is_test {
v.run_compiled_executable_and_exit()
}
v.finalize_compilation()
}
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fn v_command(command string, args []string) {
match command {
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'', '.', 'run', 'build' {
// handled later in vlib/compiler/main.v
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return
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}
'version' {
println('V $compiler.Version $compiler.vhash()')
}
'help' {
println(compiler.help_text)
}
'translate' {
println('Translating C to V will be available in V 0.3 (January)')
}
'search', 'install', 'update', 'remove' {
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compiler.launch_tool('vpm')
}
'get' {
println('use `v install` to install modules from vpm.vlang.io ')
}
'symlink' {
compiler.create_symlink()
}
'runrepl' {
compiler.launch_tool('vrepl')
}
'doc' {
vexe := os.executable()
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vdir := filepath.dir(os.executable())
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os.chdir(vdir)
mod := args.last()
os.system('$vexe build module vlib$os.path_separator' + args.last())
vhfile := filepath.join(compiler.v_modules_path,'vlib','${mod}.vh')
txt := os.read_file(vhfile) or { panic(err) }
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println(txt)
// v.gen_doc_html_for_module(args.last())
}
else {
println('v $command: unknown command')
println('Run "v help" for usage.')
}
}
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exit(0)
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}