use crate::core::builder::BuildContext;
use crate::core::builder::common;
use crate::platform;
use std::fs;
use std::path::Path;
use std::process::Command;
use std::time::Instant;
pub fn build(ctx: &BuildContext) -> Result<f64, String> {
let compiler = if ctx.compiler.is_empty() {
"cl"
} else {
ctx.compiler
};
let lang = ctx.language.to_lowercase();
if lang.contains("asm") {
return Err("MSVC backend does not support build.language with asm".to_string());
}
let start_time = Instant::now();
let sources = collect_sources(ctx)?;
let obj_dir = match ctx.target_dir {
Some(dir) => Path::new(dir).join("obj"),
None => Path::new("./target").join(ctx.profile).join("obj"),
};
let objects = build_objects(compiler, &sources, &obj_dir, ctx, "obj")?;
if ctx.kind == "staticlib" {
let lib_path = platform::lib_path(ctx.profile, ctx.project_name, ctx.target_dir);
let mut cmd = Command::new(ctx.archiver.unwrap_or("lib"));
cmd.arg("/nologo").arg(format!("/OUT:{lib_path}"));
for obj in &objects {
cmd.arg(obj);
}
if ctx.verbose || std::env::var("DCR_DEBUG").is_ok() {
eprintln!("[dcr] {:?}", cmd);
}
match cmd.status() {
Ok(status) if status.success() => {
let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
return Ok(elapsed);
}
Ok(_) => return Err("Build failed".to_string()),
Err(err) => return Err(format!("Build failed: {err}")),
}
}
let mut cmd = Command::new(compiler);
cmd.arg("/nologo");
if ctx.kind == "sharedlib" {
cmd.arg("/LD");
}
match ctx.language.to_lowercase().as_str() {
"c" => {
cmd.arg("/TC");
}
"c++" | "cpp" | "cxx" => {
cmd.arg("/TP");
}
_ => {
return Err("Unsupported language".to_string());
}
}
if !ctx.standard.is_empty() {
let std_flag = msvc_standard_flag(ctx.language, ctx.standard)?;
cmd.arg(std_flag);
}
for obj in &objects {
cmd.arg(obj);
}
if ctx.cflags.is_empty() {
for flag in default_flags(ctx.profile) {
cmd.arg(flag);
}
}
for flag in ctx.cflags {
cmd.arg(flag);
}
for dir in ctx.lib_dirs {
cmd.arg(format!("/LIBPATH:{dir}"));
}
for lib in ctx.libs {
if lib.to_lowercase().ends_with(".lib") {
cmd.arg(lib);
} else {
cmd.arg(format!("{lib}.lib"));
}
}
if !ctx.ldflags.is_empty() {
cmd.arg("/link");
for flag in ctx.ldflags {
cmd.arg(flag);
}
}
let out_path = if ctx.kind == "sharedlib" {
platform::shared_lib_path(ctx.profile, ctx.project_name, ctx.target_dir)
} else if ctx.kind == "elf" {
platform::elf_path(ctx.profile, ctx.project_name, ctx.target_dir)
} else {
platform::bin_path(ctx.profile, ctx.project_name, ctx.target_dir)
};
cmd.arg(format!("/Fe:{out_path}"));
if ctx.verbose || std::env::var("DCR_DEBUG").is_ok() {
eprintln!("[dcr] {:?}", cmd);
}
match cmd.status() {
Ok(status) if status.success() => {
let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
Ok(elapsed)
}
Ok(_) => Err("Build failed".to_string()),
Err(err) => Err(format!("Build failed: {err}")),
}
}
pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
let extensions = source_extensions(ctx.language);
common::collect_sources(
ctx.source_roots,
&extensions,
ctx.exclude_dirs,
ctx.include_paths,
)
}
fn source_extensions(language: &str) -> Vec<&str> {
let mut out = Vec::new();
for part in language.split('+') {
let lang = part.trim().to_lowercase();
match lang.as_str() {
"c" => out.extend(["c"]),
"c++" | "cpp" | "cxx" => out.extend(["cpp", "cxx", "cc"]),
"asm" => {}
_ => {}
}
}
if out.is_empty() {
out.extend(["c"]);
}
out
}
fn msvc_standard_flag(language: &str, standard: &str) -> Result<String, String> {
let lang = language.to_lowercase();
let std = standard.to_lowercase();
if lang == "c" {
return match std.as_str() {
"c11" => Ok("/std:c11".to_string()),
"c17" => Ok("/std:c17".to_string()),
_ => Err("Unsupported C standard for MSVC".to_string()),
};
}
if lang == "c++" || lang == "cpp" || lang == "cxx" {
return match std.as_str() {
"c++11" => Ok("/std:c++11".to_string()),
"c++14" => Ok("/std:c++14".to_string()),
"c++17" => Ok("/std:c++17".to_string()),
"c++20" => Ok("/std:c++20".to_string()),
"c++23" => Ok("/std:c++latest".to_string()),
_ => Err("Unsupported C++ standard for MSVC".to_string()),
};
}
Err("Unsupported language".to_string())
}
fn msvc_arch_flag(platform: Option<&str>) -> Option<&'static str> {
let raw = platform?.trim();
if raw.is_empty() {
return None;
}
let p = raw.to_lowercase().replace('-', "_");
if p == "x86" || (p.starts_with('i') && p.ends_with("86") && p.len() == 4) {
return Some("/arch:IA32");
}
match p.as_str() {
"sse2" => Some("/arch:SSE2"),
"avx" => Some("/arch:AVX"),
"avx2" => Some("/arch:AVX2"),
_ => None,
}
}
fn default_flags(profile: &str) -> &'static [&'static str] {
match profile {
"release" => &["/O2", "/DNDEBUG"],
"debug" => &["/Od", "/Zi", "/W4", "/DDCR_DEBUG", "/Oy-"],
_ => &[],
}
}
fn build_objects(
compiler: &str,
sources: &[String],
obj_dir: &Path,
ctx: &BuildContext,
obj_ext: &str,
) -> Result<Vec<String>, String> {
let objects: Vec<String> = sources
.iter()
.map(|s| common::object_path(obj_dir, s, obj_ext))
.collect();
common::parallel_build(sources.len(), |i| {
build_object(compiler, &sources[i], &objects[i], ctx)
})?;
Ok(objects)
}
fn build_object(
compiler: &str,
source: &str,
obj_path: &str,
ctx: &BuildContext,
) -> Result<(), String> {
if let Some(parent) = Path::new(obj_path).parent() {
fs::create_dir_all(parent).map_err(|err| format!("obj dir error: {err}"))?;
}
if !common::needs_rebuild(source, obj_path) {
return Ok(());
}
let mut cmd = Command::new(compiler);
cmd.arg("/nologo");
match ctx.language.to_lowercase().as_str() {
"c" => {
cmd.arg("/TC");
}
"c++" | "cpp" | "cxx" => {
cmd.arg("/TP");
}
_ => return Err("Unsupported language".to_string()),
}
if !ctx.standard.is_empty() && ctx.language.to_lowercase() != "asm" {
let std_flag = msvc_standard_flag(ctx.language, ctx.standard)?;
cmd.arg(std_flag);
}
if let Some(flag) = msvc_arch_flag(ctx.platform) {
cmd.arg(flag);
}
if ctx.cflags.is_empty() {
for flag in default_flags(ctx.profile) {
cmd.arg(flag);
}
}
for flag in ctx.cflags {
cmd.arg(flag);
}
for dir in ctx.include_dirs {
cmd.arg(format!("/I{dir}"));
}
cmd.arg("/c").arg(source).arg(format!("/Fo:{}", obj_path));
cmd.arg("/showIncludes");
if std::env::var("DCR_DEBUG").is_ok() {
eprintln!("[dcr] {:?}", cmd);
}
let output = cmd.output().map_err(|err| format!("Build failed: {err}"))?;
let stdout = String::from_utf8_lossy(&output.stdout);
let stderr = String::from_utf8_lossy(&output.stderr);
let mut headers = Vec::new();
let mut clean_stdout = String::new();
for line in stdout.lines() {
if let Some(stripped) = line.strip_prefix("Note: including file:") {
headers.push(stripped.trim().to_string());
} else if let Some(stripped) = line.strip_prefix("Примечание: включение файла:")
{
headers.push(stripped.trim().to_string());
} else {
clean_stdout.push_str(line);
clean_stdout.push('\n');
}
}
let _lock = common::get_output_lock().lock().unwrap();
if !output.status.success() {
eprint!("{}", clean_stdout);
eprint!("{}", stderr);
return Err("Build failed".to_string());
}
let trimmed_out = clean_stdout.trim();
let trimmed_err = stderr.trim();
let src_filename = Path::new(source)
.file_name()
.and_then(|v| v.to_str())
.unwrap_or("");
if !trimmed_out.is_empty() && trimmed_out != src_filename {
print!("{}", clean_stdout);
}
if !trimmed_err.is_empty() {
eprintln!("{}", trimmed_err);
}
let d_path = Path::new(obj_path).with_extension("d");
let mut d_content = format!("{}: \\\n", obj_path.replace('\\', "/"));
for h in headers {
let escaped = h.replace('\\', "/").replace(" ", "\\ ");
d_content.push_str(&format!(" {} \\\n", escaped));
}
fs::write(&d_path, d_content).map_err(|err| format!("d file error: {err}"))?;
Ok(())
}