mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
523 lines
11 KiB
V
523 lines
11 KiB
V
// Copyright (c) 2019-2020 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 compiler
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import (
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os
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strings
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)
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struct CGen {
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out os.File
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out_path string
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// types []string
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thread_fns []string
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// buf strings.Builder
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is_user bool
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mut:
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lines []string
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lines_extra []string
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typedefs []string
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type_aliases []string
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includes []string
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thread_args []string
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consts []string
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const_defines []string
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fns []string
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so_fns []string
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consts_init []string
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pass Pass
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nogen bool
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prev_tmps []string
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tmp_line string
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cur_line string
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prev_line string
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is_tmp bool
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fn_main string
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stash string
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file string
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line int
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line_directives bool
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cut_pos int
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}
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pub fn new_cgen(out_name_c string) &CGen {
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path := out_name_c
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out := os.create(path)or{
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println('failed to create $path')
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return &CGen{
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}
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}
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gen := &CGen{
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out_path: path
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out: out
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// buf: strings.new_builder(10000)
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lines: make(0, 1000, sizeof(string))
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}
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return gen
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}
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fn (g mut CGen) genln(s string) {
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if g.nogen || g.pass != .main {
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return
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}
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if g.is_tmp {
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g.tmp_line = '$g.tmp_line $s\n'
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return
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}
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g.cur_line = '$g.cur_line $s'
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if g.cur_line != '' {
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if g.line_directives && g.cur_line.trim_space() != '' {
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if g.file.len > 0 && g.line > 0 {
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g.lines << '\n#line $g.line "$g.file"'
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}
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}
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g.lines << g.cur_line
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g.prev_line = g.cur_line
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g.cur_line = ''
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}
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}
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// same as `set_placeholder(0, s)`, but faster
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fn (g mut CGen) prepend_to_statement(s string) {
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if g.is_tmp {
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g.tmp_line = s + g.tmp_line
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return
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}
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g.lines << s
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g.prev_line = g.cur_line
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}
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fn (g mut CGen) gen(s string) {
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if g.nogen || g.pass != .main {
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return
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}
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if g.is_tmp {
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g.tmp_line = '$g.tmp_line $s'
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}
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else {
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g.cur_line = '$g.cur_line $s'
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}
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}
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fn (g mut CGen) resetln(s string) {
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if g.nogen || g.pass != .main {
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return
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}
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if g.is_tmp {
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g.tmp_line = s
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}
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else {
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g.cur_line = s
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}
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}
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fn (g mut CGen) save() {
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s := g.lines.join('\n')
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g.out.writeln(s)
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g.out.writeln(g.lines_extra.join('\n'))
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g.out.close()
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}
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// returns expression's type, and entire expression's string representation)
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fn (p mut Parser) tmp_expr() (string,string) {
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// former start_tmp()
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if p.cgen.is_tmp {
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p.cgen.prev_tmps << p.cgen.tmp_line
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}
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// kg.tmp_lines_pos++
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p.cgen.tmp_line = ''
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p.cgen.is_tmp = true
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//
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typ := p.bool_expression()
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res := p.cgen.tmp_line
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if p.cgen.prev_tmps.len > 0 {
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p.cgen.tmp_line = p.cgen.prev_tmps.last()
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p.cgen.prev_tmps = p.cgen.prev_tmps[0..p.cgen.prev_tmps.len - 1]
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}
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else {
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p.cgen.tmp_line = ''
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p.cgen.is_tmp = false
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}
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return typ,res
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}
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fn (g &CGen) add_placeholder() int {
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if g.is_tmp {
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return g.tmp_line.len
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}
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return g.cur_line.len
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}
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fn (g mut CGen) start_cut() {
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g.cut_pos = g.add_placeholder()
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}
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fn (g mut CGen) cut() string {
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pos := g.cut_pos
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g.cut_pos = 0
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if g.is_tmp {
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res := g.tmp_line[pos..]
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g.tmp_line = g.tmp_line[..pos]
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return res
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}
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res := g.cur_line[pos..]
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g.cur_line = g.cur_line[..pos]
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return res
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}
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fn (g mut CGen) set_placeholder(pos int, val string) {
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if g.nogen || g.pass != .main {
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return
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}
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// if pos == 0 {
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// g.prepend_to_statement(val)
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// return
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// }
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// g.lines.set(pos, val)
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if g.is_tmp {
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left := g.tmp_line[..pos]
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right := g.tmp_line[pos..]
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g.tmp_line = '${left}${val}${right}'
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return
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}
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left := g.cur_line[..pos]
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right := g.cur_line[pos..]
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g.cur_line = '${left}${val}${right}'
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// g.genln('')
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}
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fn (g mut CGen) insert_before(val string) {
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if g.nogen {
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return
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}
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prev := g.lines[g.lines.len - 1]
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g.lines[g.lines.len - 1] = '$prev \n $val \n'
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}
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fn (g mut CGen) register_thread_fn(wrapper_name, wrapper_text, struct_text string) {
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for arg in g.thread_args {
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if arg.contains(wrapper_name) {
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return
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}
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}
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g.thread_args << struct_text
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g.thread_args << wrapper_text
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}
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fn (v &V) prof_counters() string {
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res := []string
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// Global fns
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// for f in c.table.fns {
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// res << 'double ${c.table.cgen_name(f)}_time;'
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// }
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// Methods
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/*
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for typ in c.table.types {
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// println('')
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for f in typ.methods {
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// res << f.cgen_name()
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res << 'double ${c.table.cgen_name(f)}_time;'
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// println(f.cgen_name())
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}
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}
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*/
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return res.join(';\n')
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}
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fn (p &Parser) print_prof_counters() string {
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res := []string
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// Global fns
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// for f in p.table.fns {
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// counter := '${p.table.cgen_name(f)}_time'
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// res << 'if ($counter) printf("%%f : $f.name \\n", $counter);'
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// }
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// Methods
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/*
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for typ in p.table.types {
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// println('')
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for f in typ.methods {
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counter := '${p.table.cgen_name(f)}_time'
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res << 'if ($counter) printf("%%f : ${p.table.cgen_name(f)} \\n", $counter);'
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// res << 'if ($counter) printf("$f.name : %%f\\n", $counter);'
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// res << f.cgen_name()
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// res << 'double ${f.cgen_name()}_time;'
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// println(f.cgen_name())
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}
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}
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*/
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return res.join(';\n')
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}
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fn (p mut Parser) gen_typedef(s string) {
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if !p.first_pass() {
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return
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}
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p.cgen.typedefs << s
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}
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fn (p mut Parser) gen_type_alias(s string) {
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if !p.first_pass() {
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return
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}
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p.cgen.type_aliases << s
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}
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fn (g mut CGen) add_to_main(s string) {
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g.fn_main = g.fn_main + s
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}
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fn (v &V) build_thirdparty_obj_file(path string, moduleflags []CFlag) {
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obj_path := os.realpath(path)
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if os.exists(obj_path) {
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return
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}
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println('$obj_path not found, building it...')
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parent := os.dir(obj_path)
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files := os.ls(parent)or{
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panic(err)
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}
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mut cfiles := ''
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for file in files {
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if file.ends_with('.c') {
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cfiles += '"' + os.realpath(parent + os.path_separator + file) + '" '
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}
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}
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btarget := moduleflags.c_options_before_target()
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atarget := moduleflags.c_options_after_target()
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cmd := '$v.pref.ccompiler $v.pref.third_party_option $btarget -c -o "$obj_path" $cfiles $atarget '
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res := os.exec(cmd)or{
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println('failed thirdparty object build cmd: $cmd')
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verror(err)
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return
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}
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if res.exit_code != 0 {
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println('failed thirdparty object build cmd: $cmd')
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verror(res.output)
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return
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}
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println(res.output)
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}
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fn os_name_to_ifdef(name string) string {
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match name {
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'windows' {
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return '_WIN32'
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}
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'mac' {
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return '__APPLE__'
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}
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'macos' {
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return '__APPLE__'
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}
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'linux' {
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return '__linux__'
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}
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'freebsd' {
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return '__FreeBSD__'
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}
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'openbsd' {
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return '__OpenBSD__'
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}
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'netbsd' {
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return '__NetBSD__'
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}
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'dragonfly' {
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return '__DragonFly__'
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}
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'msvc' {
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return '_MSC_VER'
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}
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'android' {
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return '__ANDROID__'
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}
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'js' {
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return '_VJS'
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}
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'solaris' {
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return '__sun'
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}
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'haiku' {
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return '__haiku__'
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}
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'linux_or_macos' {
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return ''
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}
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else {
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verror('bad os ifdef name "$name"')
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}}
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// verror('bad os ifdef name "$name"')
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return ''
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}
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fn (v &V) platform_postfix_to_ifdefguard(name string) string {
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if name.starts_with('custom '){
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cdefine := name.replace('custom ','')
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return '#ifdef CUSTOM_DEFINE_${cdefine}'
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}
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s := match name {
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'.v'{
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''
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} // no guard needed
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'_win.v', '_windows.v'{
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'#ifdef _WIN32'
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}
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'_nix.v'{
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'#ifndef _WIN32'
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}
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'_lin.v', '_linux.v'{
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'#ifdef __linux__'
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}
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'_mac.v', '_darwin.v'{
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'#ifdef __APPLE__'
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}
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'_bsd.v', '_freebsd.v '{
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'#ifdef __FreeBSD__'
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}
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'_solaris.v'{
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'#ifdef __sun'
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}
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'_haiku.v'{
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'#ifdef __haiku__'
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}
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else {
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// verror('bad platform_postfix "$name"')
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// TODO
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''}}
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if s == '' {
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verror('bad platform_postfix "$name"')
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}
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return s
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}
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// C struct definitions, ordered
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// Sort the types, make sure types that are referenced by other types
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// are added before them.
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fn (v &V) type_definitions() string {
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mut types := []Type // structs that need to be sorted
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mut builtin_types := []Type // builtin types
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// builtin types need to be on top
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builtins := ['string', 'array', 'KeyValue', 'DenseArray', 'map', 'Option']
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for builtin in builtins {
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typ := v.table.typesmap[builtin]
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builtin_types << typ
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}
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// everything except builtin will get sorted
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for t_name, t in v.table.typesmap {
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if t_name in builtins || t.is_generic {
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continue
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}
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types << t
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}
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// sort structs
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types_sorted := sort_structs(types)
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// Generate C code
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res := types_to_c(builtin_types, v.table) + '\n//----\n' + types_to_c(types_sorted, v.table)
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return res
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}
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// sort structs by dependant fields
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fn sort_structs(types []Type) []Type {
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mut dep_graph := new_dep_graph()
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// types name list
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mut type_names := []string
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for typ in types {
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type_names << typ.name
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}
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// loop over types
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for t in types {
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// create list of deps
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mut field_deps := []string
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for field in t.fields {
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// Need to handle fixed size arrays as well (`[10]Point`)
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ft := if field.typ.starts_with('[') { field.typ.all_after(']') } else { field.typ }
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// skip if not in types list or already in deps
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if !(ft in type_names) || ft in field_deps {
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continue
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}
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field_deps << ft // field.typ
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}
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// add type and dependant types to graph
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dep_graph.add(t.name, field_deps)
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}
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// sort graph
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dep_graph_sorted := dep_graph.resolve()
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if !dep_graph_sorted.acyclic {
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verror('cgen.sort_structs(): the following structs form a dependency cycle:\n' + dep_graph_sorted.display_cycles() + '\nyou can solve this by making one or both of the dependant struct fields references, eg: field &MyStruct' + '\nif you feel this is an error, please create a new issue here: https://github.com/vlang/v/issues and tag @joe-conigliaro')
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}
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// sort types
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mut types_sorted := []Type
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for node in dep_graph_sorted.nodes {
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for t in types {
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if t.name == node.name {
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types_sorted << t
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continue
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}
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}
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}
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return types_sorted
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}
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// Generates interface table and interface indexes
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fn (v &V) interface_table() string {
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mut sb := strings.new_builder(100)
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for _, t in v.table.typesmap {
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if t.cat != .interface_ {
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continue
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}
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// interface_name is for example Speaker
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interface_name := t.name
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mut methods := ''
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mut generated_casting_functions := ''
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sb.writeln('// NR methods = $t.gen_types.len')
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for i, gen_type in t.gen_types {
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// ptr_ctype can be for example Cat OR Cat_ptr:
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ptr_ctype := gen_type.replace('*', '_ptr')
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// cctype is the Cleaned Concrete Type name, *without ptr*,
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// i.e. cctype is always just Cat, not Cat_ptr:
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cctype := gen_type.replace('*', '')
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// Speaker_Cat_index = 0
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interface_index_name := '_${interface_name}_${ptr_ctype}_index'
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generated_casting_functions += '
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${interface_name} I_${cctype}_to_${interface_name}(${cctype} x) {
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return (${interface_name}){
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._object = (void*) memdup(&x, sizeof(${cctype})),
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._interface_idx = ${interface_index_name} };
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}
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'
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methods += '{\n'
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for j, method in t.methods {
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// Cat_speak
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methods += ' (void*) ${cctype}_${method.name}'
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if j < t.methods.len - 1 {
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methods += ', \n'
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}
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}
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methods += '\n},\n\n'
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sb.writeln('int ${interface_index_name} = $i;')
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}
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if t.gen_types.len > 0 {
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// methods = '{TCCSKIP(0)}'
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// }
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sb.writeln('void* (* ${interface_name}_name_table[][$t.methods.len]) = ' + '{ \n $methods \n }; ')
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}
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else {
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// The line below is needed so that C compilation succeeds,
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// even if no interface methods are called.
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// See https://github.com/zenith391/vgtk3/issues/7
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sb.writeln('void* (* ${interface_name}_name_table[][1]) = ' + '{ {NULL} }; ')
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}
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if generated_casting_functions.len > 0 {
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sb.writeln('// Casting functions for interface "${interface_name}" :')
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sb.writeln( generated_casting_functions )
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}
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}
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return sb.str()
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}
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