v/vlib/compiler/module_header.v

337 lines
7.6 KiB
V

// 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.
module compiler
import (
strings
os
)
/*
.vh generation logic.
.vh files contain only function signatures, consts, and types.
They are used together with pre-compiled modules.
*/
// "fn foo(a int) string"
fn (f &Fn) v_definition() string {
//t :=time.ticks()
mut sb := strings.new_builder(100)
if f.is_public {
sb.write('pub ')
}
sb.write('fn ')
if f.is_c {
sb.write('C.')
}
if f.is_method {
recv := f.args[0]
typ := v_type_str(recv.typ).replace('*', '')
mut mu := if recv.is_mut { 'mut' } else { '' }
if recv.ref {
mu = '&'
}
sb.write('($recv.name $mu $typ) ')
}
if f.name.contains('__') {
sb.write(f.name.all_after('__') + '(')
} else {
sb.write('$f.name(')
}
for i, arg in f.args {
if i == 0 && f.is_method { // skip the receiver
continue
}
typ := v_type_str(arg.typ).replace('*', '&')
if arg.name == '' {
sb.write(typ)
} else {
sb.write('$arg.name $typ')
}
if i != f.args.len - 1 {
sb.write(', ')
}
}
sb.write(')')
if f.typ != 'void' {
typ := v_type_str(f.typ).replace('*', '&')
sb.write(' ')
sb.write(typ)
sb.writeln(' ')
}
//println('ms: ${time.ticks() - t}')
return sb.str()
}
fn v_type_str(typ_ string) string {
mut typ := if typ_.ends_with('*') {
'*' + typ_.left(typ_.len - 1)
} else {
typ_
}
typ = typ.replace('Option_', '?')
// fn parent/alias?
if typ.starts_with('fn ') {
mut types := []string
fi_lpar := typ.index_byte(`(`)
li_rpar := typ.last_index_byte(`)`)
ret_type := typ.right(li_rpar+1)
for t in typ.substr(fi_lpar+1, li_rpar).split(',') {
types << v_type_str(t)
}
return 'fn (' + types.join(', ') + ')$ret_type'
}
typ = typ.replace('Option_', '?')
// multiple return
if typ.contains('_V_MulRet') {
words := typ.replace('_V_MulRet_', '').replace('_PTR_', '*').split('_V_')
typ = '('
for i in 0 .. words.len {
typ += v_type_str(words[i])
if i != words.len - 1 {
typ += ','
}
}
typ += ')'
return typ
}
//println('"$typ"')
if typ == '*void' {
return 'voidptr'
}
if typ == '*byte' {
return 'byteptr'
}
if typ.starts_with('array_') {
return '[]' + typ.right(6)
}
if typ.contains('__') {
opt := typ.starts_with('?')
typ = typ.all_after('__')
if opt {
typ = '?' + typ
}
}
return typ
}
// `mod` == "vlib/os"
fn generate_vh(mod string) {
println('\n\n\n\nGenerating a V header file for module `$mod`')
vexe := os.executable()
full_mod_path := os.dir(vexe) + '/' + mod
mod_path := mod.replace('.', os.path_separator)
dir := if mod.starts_with('vlib') {
'$compiler.v_modules_path${os.path_separator}$mod'
} else {
'$compiler.v_modules_path${os.path_separator}$mod'
}
path := dir + '.vh'
pdir := dir.all_before_last(os.path_separator)
if !os.dir_exists(pdir) {
os.mkdir_all(pdir)
// os.mkdir(os.realpath(dir))
}
out := os.create(path) or { panic(err) }
// Consts
println(full_mod_path)
mut vfiles := os.walk_ext(full_mod_path, '.v')
filtered := vfiles.filter(!it.ends_with('test.v') && !it.ends_with('_win.v')) // TODO merge once filter allows it
println(filtered)
mut v := new_v(['foo.v'])
//v.pref.generating_vh = true
for file in filtered {
mut p := v.new_parser_from_file(file)
p.parse(.decl)
for i, tok in p.tokens {
if !p.tok.is_decl() {
continue
}
match tok.tok {
TokenKind.key_fn => { generate_fn(out, p.tokens, i) }
TokenKind.key_const => { generate_const(out, p.tokens, i) }
}
}
}
}
fn generate_fn(file os.File, tokens []Token, i int) {
mut out := strings.new_builder(100)
mut next := tokens[i+1]
if tokens[i-1].tok != .key_pub {
// Skip private fns
return
}
if next.tok == .name && next.lit == 'C' {
println('skipping C')
return
}
//out.write('pub ')
mut tok := tokens[i]
for i < tokens.len && tok.tok != .lcbr {
next = tokens[i+1]
out.write(tok.str())
if tok.tok != .lpar && !(next.tok in [.comma, .rpar]) {
// No space after (), [], etc
out.write(' ')
}
i++
tok = tokens[i]
}
file.writeln(out.str())
}
fn generate_const(file os.File, tokens []Token, i int) {
//mut out := strings.new_builder(100)
}
fn (v &V) generate_vh_old() {
println('\n\n\n\nGenerating a V header file for module `$v.mod`')
mod_path := v.mod.replace('.', os.path_separator)
dir := if v.dir.starts_with('vlib') {
'$v_modules_path${os.path_separator}$v.dir'
} else {
'$v_modules_path${os.path_separator}$mod_path'
}
path := dir + '.vh'
pdir := dir.all_before_last(os.path_separator)
if !os.dir_exists(pdir) {
os.mkdir_all(pdir)
// os.mkdir(os.realpath(dir))
}
file := os.create(path) or { panic(err) }
// Consts
mod_def := if v.mod.contains('.') { v.mod.all_after('.') } else { v.mod }
file.writeln('// $v.mod module header \n')
file.writeln('module $mod_def')
file.writeln('// Consts')
if v.table.consts.len > 0 {
file.writeln('const (')
for i, c in v.table.consts {
if c.mod != v.mod {
continue
}
// println('$i $c.name')
//if !c.name.contains('__') {
//continue
//}
name := c.name.all_after('__')
typ := v_type_str(c.typ)
file.writeln('\t$name $typ')
}
file.writeln(')\n')
// Globals
for var in v.table.consts {
if var.mod != v.mod {
continue
}
if !var.is_global {
continue
}
name := var.name.all_after('__')
typ := v_type_str(var.typ)
file.writeln('__global $name $typ')
}
file.writeln('\n')
}
// Types
file.writeln('// Types')
for _, typ in v.table.typesmap {
//println(typ.name)
if typ.mod != v.mod && typ.mod != ''{ // int, string etc mod == ''
// println('skipping type "$typ.name"')
continue
}
if typ.name.contains('_V_MulRet') {
continue
}
mut name := typ.name
if typ.name.contains('__') {
name = typ.name.all_after('__')
}
// type alias
if typ.parent != '' && typ.cat == .alias {
parent := v_type_str(typ.parent)
file.writeln('type $typ.name $parent')
}
if typ.cat in [TypeCategory.struct_, .c_struct] {
c := if typ.is_c { 'C.' } else { '' }
file.writeln('struct ${c}$name {')
// Private fields
for field in typ.fields {
if field.access_mod == .public {
continue
}
field_type := v_type_str(field.typ).replace('*', '&')
file.writeln('\t$field.name $field_type')
}
//file.writeln('pub:')
mut public_str := ''
for field in typ.fields {
if field.access_mod == .private {
continue
}
field_type := v_type_str(field.typ).replace('*', '&')
public_str += '\t$field.name $field_type\n'
//file.writeln('\t$field.name $field_type')
}
if public_str != '' {
file.writeln('pub:' + public_str)
}
file.writeln('}\n')
}
}
// Functions & methods
file.writeln('// Functions')
// Public first
mut fns := []Fn
// TODO fns := v.table.fns.filter(.mod == v.mod)
for _, f in v.table.fns {
if f.mod == v.mod || f.mod == ''{
fns << f
} else {
//println('skipping fn $f.name mod=$f.mod')
}
}
for _, f in fns {
if !f.is_public {
continue
}
file.writeln(f.v_definition())
}
// Private
for _, f in fns {
if f.is_public {
continue
}
file.writeln(f.v_definition())
}
// Methods
file.writeln('\n// Methods //////////////////')
for _, typ in v.table.typesmap {
if typ.mod != v.mod && !(v.mod == 'builtin' && typ.mod == '') {
// println('skipping method typ $typ.name mod=$typ.mod')
continue
}
for method in typ.methods {
file.writeln(method.v_definition())
}
}
file.close()
/*
for i, p in v.parsers {
if v.parsers[i].vh_lines.len > 0 {
os.write_file(p.file_name +'.vh', v.parsers[i].vh_lines.join('\n'))
}
}
*/
}