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v/vlib/compiler/module_header.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.
module compiler
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import (
strings
os
)
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/*
.vh generation logic.
.vh files contain only function signatures, consts, and types.
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They are used together with pre-compiled modules.
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*/
// "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]
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typ := v_type_str(recv.typ).replace('*', '')
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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 {
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if i == 0 && f.is_method { // skip the receiver
continue
}
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typ := v_type_str(arg.typ).replace('*', '&')
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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' {
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typ := v_type_str(f.typ).replace('*', '&')
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sb.write(' ')
sb.write(typ)
sb.writeln(' ')
}
//println('ms: ${time.ticks() - t}')
return sb.str()
}
fn v_type_str(typ_ string) string {
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mut typ := if typ_.ends_with('*') {
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'*' + typ_.left(typ_.len - 1)
} else {
typ_
}
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typ = typ.replace('Option_', '?')
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// fn parent/alias?
if typ.starts_with('fn ') {
mut types := []string
fi_lpar := typ.index_byte(`(`)
li_rpar := typ.last_index_byte(`)`)
ret_type := typ.right(li_rpar+1)
for t in typ.substr(fi_lpar+1, li_rpar).split(',') {
types << v_type_str(t)
}
return 'fn (' + types.join(', ') + ')$ret_type'
}
typ = typ.replace('Option_', '?')
// multiple return
if typ.contains('_V_MulRet') {
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words := typ.replace('_V_MulRet_', '').replace('_PTR_', '*').split('_V_')
typ = '('
for i in 0 .. words.len {
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typ += v_type_str(words[i])
if i != words.len - 1 {
typ += ','
}
}
typ += ')'
return typ
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}
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//println('"$typ"')
if typ == '*void' {
return 'voidptr'
}
if typ == '*byte' {
return 'byteptr'
}
if typ.starts_with('array_') {
return '[]' + typ.right(6)
}
if typ.contains('__') {
opt := typ.starts_with('?')
typ = typ.all_after('__')
if opt {
typ = '?' + typ
}
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}
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return typ
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}
fn (v &V) generate_vh() {
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println('\n\n\n\nGenerating a V header file for module `$v.mod`')
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mod_path := v.mod.replace('.', os.path_separator)
dir := if v.dir.starts_with('vlib') {
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'$v_modules_path${os.path_separator}$v.dir'
} else {
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'$v_modules_path${os.path_separator}$mod_path'
}
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path := dir + '.vh'
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pdir := dir.all_before_last(os.path_separator)
if !os.dir_exists(pdir) {
os.mkdir_all(pdir)
// os.mkdir(os.realpath(dir))
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}
file := os.create(path) or { panic(err) }
// Consts
mod_def := if v.mod.contains('.') { v.mod.all_after('.') } else { v.mod }
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file.writeln('// $v.mod module header \n')
file.writeln('module $mod_def')
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file.writeln('// Consts')
if v.table.consts.len > 0 {
file.writeln('const (')
for i, c in v.table.consts {
if c.mod != v.mod {
continue
}
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// println('$i $c.name')
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//if !c.name.contains('__') {
//continue
//}
name := c.name.all_after('__')
typ := v_type_str(c.typ)
file.writeln('\t$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 $typ')
}
file.writeln('\n')
}
// Types
file.writeln('// Types')
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for _, typ in v.table.typesmap {
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//println(typ.name)
if typ.mod != v.mod && typ.mod != ''{ // int, string etc mod == ''
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// println('skipping type "$typ.name"')
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continue
}
if typ.name.contains('_V_MulRet') {
continue
}
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mut name := typ.name
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if typ.name.contains('__') {
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name = typ.name.all_after('__')
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}
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// type alias
if typ.parent != '' && typ.cat == .alias {
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parent := v_type_str(typ.parent)
file.writeln('type $typ.name $parent')
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}
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if typ.cat in [TypeCategory.struct_, .c_struct] {
c := if typ.is_c { 'C.' } else { '' }
file.writeln('struct ${c}$name {')
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// Private fields
for field in typ.fields {
if field.access_mod == .public {
continue
}
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field_type := v_type_str(field.typ).replace('*', '&')
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file.writeln('\t$field.name $field_type')
}
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//file.writeln('pub:')
mut public_str := ''
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for field in typ.fields {
if field.access_mod == .private {
continue
}
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field_type := v_type_str(field.typ).replace('*', '&')
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public_str += '\t$field.name $field_type\n'
//file.writeln('\t$field.name $field_type')
}
if public_str != '' {
file.writeln('pub:' + public_str)
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}
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 {
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if f.mod == v.mod || f.mod == ''{
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fns << f
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} else {
//println('skipping fn $f.name mod=$f.mod')
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}
}
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 == '') {
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// println('skipping method typ $typ.name mod=$typ.mod')
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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'))
}
}
*/
}