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v/compiler/cgen.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 os
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import strings
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struct CGen {
out os.File
out_path string
typedefs []string
type_aliases []string
includes []string
types []string
thread_args []string
thread_fns []string
consts []string
fns []string
so_fns []string
consts_init []string
lines []string
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//buf strings.Builder
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is_user bool
mut:
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run Pass
nogen bool
tmp_line string
cur_line string
prev_line string
is_tmp bool
fn_main string
stash string
file string
line int
line_directives bool
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}
fn new_cgen(out_name_c string) *CGen {
path:='.$out_name_c'
out := os.create(path) or {
println('failed to create $path')
return &CGen{}
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}
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gen := &CGen {
out_path: path
out: out
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//buf: strings.new_builder(10000)
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lines: _make(0, 1000, sizeof(string))
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}
return gen
}
fn (g mut CGen) genln(s string) {
if g.nogen || g.run != .main {
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return
}
if g.is_tmp {
g.tmp_line = '$g.tmp_line $s\n'
return
}
g.cur_line = '$g.cur_line $s'
if g.cur_line != '' {
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if g.line_directives && g.cur_line.trim_space() != '' {
g.lines << '#line $g.line "$g.file"'
}
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g.lines << g.cur_line
g.prev_line = g.cur_line
g.cur_line = ''
}
}
fn (g mut CGen) gen(s string) {
if g.nogen || g.run != .main {
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return
}
if g.is_tmp {
g.tmp_line = '$g.tmp_line $s'
}
else {
g.cur_line = '$g.cur_line $s'
}
}
fn (g mut CGen) resetln(s string) {
if g.nogen || g.run != .main {
return
}
if g.is_tmp {
g.tmp_line = s
}
else {
g.cur_line = s
}
}
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fn (g mut CGen) save() {
s := g.lines.join('\n')
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g.out.writeln(s)
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g.out.close()
}
fn (g mut CGen) start_tmp() {
if g.is_tmp {
println(g.tmp_line)
println('start_tmp() already started. cur_line="$g.cur_line"')
exit(1)
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}
// kg.tmp_lines_pos++
g.tmp_line = ''
g.is_tmp = true
}
fn (g mut CGen) end_tmp() string {
g.is_tmp = false
res := g.tmp_line
g.tmp_line = ''
return res
}
fn (g mut CGen) add_placeholder() int {
if g.is_tmp {
return g.tmp_line.len
}
return g.cur_line.len
}
fn (g mut CGen) set_placeholder(pos int, val string) {
if g.nogen || g.run != .main {
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return
}
// g.lines.set(pos, val)
if g.is_tmp {
left := g.tmp_line.left(pos)
right := g.tmp_line.right(pos)
g.tmp_line = '${left}${val}${right}'
return
}
left := g.cur_line.left(pos)
right := g.cur_line.right(pos)
g.cur_line = '${left}${val}${right}'
// g.genln('')
}
fn (g mut CGen) add_placeholder2() int {
if g.is_tmp {
println('tmp in addp2')
exit(1)
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}
g.lines << ''
return g.lines.len - 1
}
fn (g mut CGen) set_placeholder2(pos int, val string) {
if g.nogen || g.run != .main {
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return
}
if g.is_tmp {
println('tmp in setp2')
exit(1)
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}
g.lines[pos] = val
}
fn (g mut CGen) insert_before(val string) {
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prev := g.lines[g.lines.len - 1]
g.lines[g.lines.len - 1] = '$prev \n $val \n'
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}
fn (g mut CGen) register_thread_fn(wrapper_name, wrapper_text, struct_text string) {
for arg in g.thread_args {
if arg.contains(wrapper_name) {
return
}
}
g.thread_args << struct_text
g.thread_args << wrapper_text
}
fn (c mut V) prof_counters() string {
mut res := []string
// Global fns
//for f in c.table.fns {
//res << 'double ${c.table.cgen_name(f)}_time;'
//}
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// Methods
for typ in c.table.types {
// println('')
for f in typ.methods {
// res << f.cgen_name()
res << 'double ${c.table.cgen_name(f)}_time;'
// println(f.cgen_name())
}
}
return res.join(';\n')
}
fn (p mut Parser) print_prof_counters() string {
mut res := []string
// Global fns
//for f in p.table.fns {
//counter := '${p.table.cgen_name(f)}_time'
//res << 'if ($counter) printf("%%f : $f.name \\n", $counter);'
//}
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// Methods
for typ in p.table.types {
// println('')
for f in typ.methods {
counter := '${p.table.cgen_name(f)}_time'
res << 'if ($counter) printf("%%f : ${p.table.cgen_name(f)} \\n", $counter);'
// res << 'if ($counter) printf("$f.name : %%f\\n", $counter);'
// res << f.cgen_name()
// res << 'double ${f.cgen_name()}_time;'
// println(f.cgen_name())
}
}
return res.join(';\n')
}
fn (p mut Parser) gen_type(s string) {
if !p.first_run() {
return
}
p.cgen.types << s
}
fn (p mut Parser) gen_typedef(s string) {
if !p.first_run() {
return
}
p.cgen.typedefs << s
}
fn (p mut Parser) gen_type_alias(s string) {
if !p.first_run() {
return
}
p.cgen.type_aliases << s
}
fn (g mut CGen) add_to_main(s string) {
println('add to main')
g.fn_main = g.fn_main + s
}
fn build_thirdparty_obj_file(flag string) {
obj_path := flag.all_after(' ')
if os.file_exists(obj_path) {
return
}
println('$obj_path not found, building it...')
parent := obj_path.all_before_last('/').trim_space()
files := os.ls(parent)
//files := os.ls(parent).filter(_.ends_with('.c')) TODO
mut cfiles := ''
for file in files {
if file.ends_with('.c') {
cfiles += parent + '/' + file + ' '
}
}
cc := if os.user_os() == 'windows' { 'gcc' } else { 'cc' } // TODO clang support on Windows
res := os.exec('$cc -fPIC -c -o $obj_path $cfiles')
println(res)
}