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praser done, using serde (amazing)

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This commit is contained in:
Noah Swerhun 2024-03-11 20:22:08 -05:00
parent 001a9735ee
commit 7865c73006
13 changed files with 335 additions and 500 deletions
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1
Cargo.lock generated
View file

@ -85,6 +85,7 @@ name = "ngen"
version = "0.1.0"
dependencies = [
"clap",
"serde",
"toml",
]

1
Cargo.toml
View file

@ -7,4 +7,5 @@ edition = "2021"
[dependencies]
clap = { version = "4.5.1", features = ["derive", "std", "help", "usage"], default-features = false }
serde = { version = "1.0.197", features = ["derive"] }
toml = "0.8.10"

106
src/config_file_parsing.rs
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@ -1,106 +0,0 @@
use std::fmt::Display;
use toml::{Table, Value};
#[derive(Debug)]
pub struct ConfigFileError<'a> {
pub key_path: String,
pub message: &'a str,
}
impl Display for ConfigFileError<'_> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"config file error: key {}: {}.",
self.key_path, self.message
)
}
}
pub fn get_key_as_str<'a>(
table: &'a Table,
key: &str,
key_path: String,
) -> Result<Option<&'a str>, ConfigFileError<'a>> {
if let Some(v) = table.get(key) {
if let Value::String(s) = v {
Ok(Some(s))
} else {
Err(ConfigFileError {
key_path,
message: "invalid type, should be string",
})
}
} else {
Ok(None)
}
}
pub fn get_key_as_table<'a>(
table: &'a Table,
key: &str,
key_path: String,
) -> Result<Option<&'a Table>, ConfigFileError<'a>> {
if let Some(v) = table.get(key) {
if let Value::Table(s) = v {
Ok(Some(s))
} else {
Err(ConfigFileError {
key_path,
message: "invalid type, should be a table of key-value pairs",
})
}
} else {
Ok(None)
}
}
pub fn get_key_as_bool<'a>(
table: &'a Table,
key: &str,
key_path: String,
) -> Result<Option<bool>, ConfigFileError<'a>> {
if let Some(v) = table.get(key) {
if let Value::Boolean(s) = v {
Ok(Some(*s))
} else {
Err(ConfigFileError {
key_path,
message: "invalid type, should be boolean",
})
}
} else {
Ok(None)
}
}
pub fn get_key_as_vec_str<'a>(
table: &'a Table,
key: &str,
key_path: String,
) -> Result<Option<Vec<&'a str>>, ConfigFileError<'a>> {
if let Some(v) = table.get(key) {
if let Value::Array(a) = v {
let mut ret: Vec<&'a str> = vec![];
for elem in a {
if let Value::String(s) = elem {
ret.push(&s);
} else {
return Err(ConfigFileError {
key_path: format!("{key_path} elemement '{elem}'"),
message: "invalid type, should be string",
});
}
}
Ok(Some(ret))
} else {
Err(ConfigFileError {
key_path,
message: "invalid type, should be array of strings",
})
}
} else {
Ok(None)
}
}

45
src/config_table.rs
View file

@ -1,45 +0,0 @@
use toml::Table;
use crate::config_file_parsing::*;
#[derive(Debug, Clone)]
pub struct ConfigTable<'a> {
pub build_dir: &'a str,
pub compile_commands: bool,
pub compile_commands_target: &'a str,
}
impl<'a> ConfigTable<'a> {
pub fn get_default() -> Self {
ConfigTable {
build_dir: "build",
compile_commands: false,
compile_commands_target: "main",
}
}
pub fn from_table(table: &'a Table, key_path: String) -> Result<Self, ConfigFileError<'a>> {
let mut ret = Self::get_default();
if let Some(v) = get_key_as_str(table, "build_dir", format!("{key_path}.build_dir"))? {
ret.build_dir = v;
}
if let Some(v) = get_key_as_bool(
table,
"compile_commands",
format!("{key_path}.compile_commands"),
)? {
ret.compile_commands = v;
}
if let Some(v) = get_key_as_str(
table,
"compile_commands_target",
format!("{key_path}.compile_commands_target"),
)? {
ret.compile_commands_target = v;
}
Ok(ret)
}
}

278
src/main.rs
View file

@ -1,21 +1,15 @@
use clap::Parser;
use config_file_parsing::get_key_as_table;
use core::{panic, str};
use std::{
fs::{read_to_string, write},
path::Path,
process::exit,
};
use toml::{Table, Value};
use core::panic;
use std::collections::HashMap;
use std::fs::read_to_string;
mod target;
use target::*;
mod ngen_toml;
use ngen_toml::*;
mod config_table;
use config_table::*;
mod config_file_parsing;
mod target_options;
mod parsed_config_processing;
use parsed_config_processing::config_table::*;
use parsed_config_processing::parsed_config_processing::*;
use parsed_config_processing::target::*;
/// ngen is a build file generator for the ninja build system.
#[derive(Parser)]
@ -32,226 +26,54 @@ struct Args {
write_compile_commands: Option<String>,
}
fn gen_ninja_code(target: &Target) -> String {
let mut ret = String::from("\n");
// necessary because you cannot access struct members in a format string :(
let name = &target.name;
let outfile = &target.outfile;
let compiler = &target.compiler;
let compiler_flags = &target.compiler_flags.join(" ");
let linker = &target.linker;
let linker_flags = &target.linker_flags.join(" ");
let linker_libs = &target.linker_libs.join(" ");
let sources = &target.sources;
ret.push_str(&format!(
"\
# BEGIN TARGET {name}
rule cc_{name}
deps = gcc
depfile = $dep
command = {compiler} {compiler_flags} -MD -MF $dep -o $out -c $in
description = Building $in -> $out
rule link_{name}
command = {linker} {linker_flags} -o $out $in {linker_libs}
description = Linking $out
build $builddir/{name}/obj: mkdir
build $builddir/{name}/dep: mkdir
"
));
let mut object_list: Vec<String> = Vec::new();
for s in sources {
let new_file = s.replace("/", "-");
let obj_name = format!("$builddir/{name}/obj/{new_file}.o");
let dep_name = format!("$builddir/{name}/dep/{new_file}.o.d");
ret.push_str(&format!(
"build {obj_name}: cc_{name} {s}\n dep = {dep_name}\n"
));
object_list.push(obj_name);
}
ret.push_str(&format!("\nbuild $builddir/{name}/{outfile}: link_{name} "));
ret.push_str(&object_list.join(" "));
ret.push_str(&format!(
" || $builddir/{name}/obj $builddir/{name}/dep\nbuild {name}: phony $builddir/{name}/{outfile}\n"
));
if target.is_default {
ret.push_str(&format!("\ndefault {name}\n"));
}
ret.push_str(&format!("# END TARGET {name}\n"));
ret
}
fn gen_compile_commands(target: &Target, build_dir: &str) -> String {
let mut ret = String::from("[\n");
let name = &target.name;
let compiler = &target.compiler;
let compiler_flags = &target.compiler_flags.join(" ");
let pwd = Path::new(".");
let pwd = pwd
.canonicalize()
.unwrap_or_else(|e| panic!("cwd is non canonical (something is very wrong): {e}"));
let pwd = pwd.to_str().unwrap();
for (i, s) in target.sources.iter().enumerate() {
let new_file = s.replace("/", "-");
let obj_name = format!("{build_dir}/{name}/obj/{new_file}.o");
ret.push_str(&format!(
" {{
\"directory\": \"{pwd}\",
\"command\": \"{compiler} {compiler_flags} -o {obj_name} -c {s}\",
\"file\": \"{s}\"
}}"
));
if i != target.sources.len() - 1 {
ret.push(',');
}
ret.push('\n');
}
ret.push_str("]\n");
ret
}
fn main() {
let args = Args::parse();
let output_file = &args.output_file;
let config_file_name = &args.config_file;
let config_file = read_to_string(config_file_name)
.unwrap_or_else(|e| panic!("could not read config file {config_file_name}: {e}"));
let toml_config = toml::from_str::<Table>(&config_file)
.unwrap_or_else(|e| panic!("error parsing toml file {config_file_name}: {e}"));
let config_file = read_to_string(&args.config_file)
.unwrap_or_else(|e| panic!("error reading config file `{}`: {e}", args.config_file));
let toml_config: NgenToml = toml::from_str(&config_file)
.unwrap_or_else(|e| panic!("error parsing config file `{}`: {e}", args.config_file));
// get config
let config_tbl: ConfigTable;
match get_key_as_table(&toml_config, "config", "".to_string()) {
Ok(v) => match v {
Some(c) => {
config_tbl = ConfigTable::from_table(&c, ".config".to_string())
.unwrap_or_else(|e| panic!("{e}"))
let config_table: ConfigTable;
match &toml_config.config {
Some(v) => {
config_table = ConfigTable::from_parsed_config(&v).unwrap_or_else(|e| panic!("{e}"))
}
None => config_table = ConfigTable::get_default(),
}
let all_parsed_targets: &HashMap<String, ParsedTarget>;
match &toml_config.targets {
Some(v) => {
all_parsed_targets = v;
}
None => panic!(
"{}",
ConfigurationError {
message: "no targets found, nothing to do. Exiting".to_string()
}
),
}
let mut targets: HashMap<&str, Target> = HashMap::new();
for (name, parsed_target) in all_parsed_targets {
if let Some(_) = targets.get(name as &str) {
continue;
}
let mut inheritance_chain: HashMap<&str, &str> = HashMap::new();
match Target::from_parsed_target(
parsed_target,
name,
all_parsed_targets,
&targets,
&mut inheritance_chain,
) {
Ok(v) => {
targets.extend(v.into_iter());
}
None => config_tbl = ConfigTable::get_default(),
},
Err(e) => panic!("{e}"),
}
println!("{:?}", config_tbl);
//let mut config = Config::get_default();
//if let Some(v) = parsed_config.get("config") {
// if let Value::Table(t) = v {
// config.set(&t);
// } else {
// panic!("error parsing config table: config invalid type, must be a table.");
// }
//}
//----
// parse the main target first
//let mut targets: Vec<Target> = vec![];
match Target::from_table(&toml_config, "main", "".to_string()) {
Ok(v) => println!("{:?}", v),
Err(e) => panic!("{e}"),
}
exit(10);
// targets.push(main_target.clone());
// let mut target_for_comp_cmds = main_target;
// let mut target_for_comp_cmds_changed = false;
//
// // parse other targets
// for k in parsed_config.keys() {
// if let Value::Table(t) = parsed_config.get(k).unwrap() {
// if k == "config" {
// continue; // ignore config
// }
// let target = Target::new(&t, k, Some(&targets[0]));
// targets.push(target);
// if let Some(_) = args.write_compile_commands {
// if *k == config.compile_commands_target {
// target_for_comp_cmds = targets[targets.len() - 1].clone();
// target_for_comp_cmds_changed = true;
// }
// }
// }
// }
//
// if let Some(file) = args.write_compile_commands {
// if config.compile_commands_target == "" {
// eprintln!(
// "ngen: warn: no compile_commands target found, using 'main' target by default."
// );
// } else if !target_for_comp_cmds_changed && config.compile_commands_target != "main" {
// let c = &config.compile_commands_target;
// eprintln!(
// "ngen: warn: compile_commands target {c} not found, using 'main' target instead."
// );
// }
// write(
// &file,
// &gen_compile_commands(&target_for_comp_cmds, &config.build_dir),
// )
// .unwrap_or_else(|e| panic!("fatal: could not write {file}: {e}"));
// // no need to write ninja file
// exit(0);
// }
//
// let build_dir = &config.build_dir;
// let mut ninjafile = format!(
// "\
//# Generated by ngen. Do not modify by hand.
//
//builddir = {build_dir}
//
//rule mkdir
// command = mkdir -p $out
// description = Creating directory $out
//
//rule regen_ninjafile
// command = ngen -c $in -o $out
// generator = 1
// description = Regenerating $out
//
//",
// );
//
// if config.compile_commands {
// ninjafile.push_str(&format!(
// "\
//rule regen_compile_commands
// command = ngen -c $in --write-compile-commands $out
// description = Regenerating $out
//
//build $builddir: mkdir
//
//build $builddir/compile_commands.json: regen_compile_commands {config_file_name} || $builddir
// pool = console
//
//build {output_file}: regen_ninjafile {config_file_name} || $builddir/compile_commands.json
// pool = console
//"
// ));
// } else {
// ninjafile.push_str(&format!(
// "build {output_file}: regen_ninjafile {config_file_name}\n pool = console\n"
// ));
// }
//
// for t in targets {
// ninjafile.push_str(&gen_ninja_code(&t));
// }
//
// write(output_file, &ninjafile)
// .unwrap_or_else(|e| panic!("could not write ninja file {ninjafile}: {e}"));
println!("{:#?}", targets);
}

38
src/ngen_toml.rs Normal file
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@ -0,0 +1,38 @@
use serde::Deserialize;
use std::collections::HashMap;
#[derive(Debug, Clone, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ParsedTarget {
pub outfile: Option<String>,
pub compiler: Option<String>,
pub compiler_flags: Option<Vec<String>>,
pub linker: Option<String>,
pub linker_flags: Option<Vec<String>>,
pub linker_libs: Option<Vec<String>>,
pub sources: Option<Vec<String>>,
pub opts: Option<ParsedTargetOptions>,
}
#[derive(Debug, Clone, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ParsedTargetOptions {
pub inherit: Option<bool>,
pub inherit_from: Option<String>,
pub default: Option<bool>,
}
#[derive(Debug, Clone, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ParsedConfigTable {
pub build_dir: Option<String>,
pub compile_commands: Option<bool>,
pub compile_commands_target: Option<String>,
}
#[derive(Debug, Clone, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct NgenToml {
pub config: Option<ParsedConfigTable>,
pub targets: Option<HashMap<String, ParsedTarget>>,
}

39
src/parsed_config_processing/config_table.rs Normal file
View file

@ -0,0 +1,39 @@
use super::parsed_config_processing::*;
use crate::ngen_toml::*;
#[derive(Debug, Clone)]
pub struct ConfigTable<'a> {
pub build_dir: &'a str,
pub compile_commands: bool,
pub compile_commands_target: &'a str,
}
impl<'a> ConfigTable<'a> {
pub fn get_default() -> Self {
ConfigTable {
build_dir: "build",
compile_commands: false,
compile_commands_target: "main",
}
}
pub fn from_parsed_config(
parsed_config_table: &'a ParsedConfigTable,
) -> Result<Self, ConfigurationError> {
let mut ret = Self::get_default();
if let Some(v) = &parsed_config_table.build_dir {
ret.build_dir = v;
}
if let Some(v) = &parsed_config_table.compile_commands {
ret.compile_commands = *v;
}
if let Some(v) = &parsed_config_table.compile_commands_target {
ret.compile_commands_target = v;
}
Ok(ret)
}
}

4
src/parsed_config_processing/mod.rs Normal file
View file

@ -0,0 +1,4 @@
pub mod config_table;
pub mod parsed_config_processing;
pub mod target;
pub mod target_options;

12
src/parsed_config_processing/parsed_config_processing.rs Normal file
View file

@ -0,0 +1,12 @@
use std::fmt::Display;
#[derive(Debug)]
pub struct ConfigurationError {
pub message: String,
}
impl Display for ConfigurationError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "configuration error: {}", self.message)
}
}

151
src/parsed_config_processing/target.rs Normal file
View file

@ -0,0 +1,151 @@
use core::str;
use std::collections::HashMap;
use super::parsed_config_processing::*;
use super::target_options::*;
use crate::ngen_toml::*;
#[derive(Debug, Clone)]
pub struct Target<'a> {
pub outfile: &'a str,
pub compiler: &'a str,
pub compiler_flags: Vec<&'a str>,
pub linker: &'a str,
pub linker_flags: Vec<&'a str>,
pub linker_libs: Vec<&'a str>,
pub sources: Vec<&'a str>,
pub opts: TargetOptions<'a>,
}
impl<'a> Target<'a> {
pub fn get_default(
) -> Self {
Target {
outfile: "a.out",
compiler: "cc",
compiler_flags: vec![],
linker: "cc",
linker_flags: vec![],
linker_libs: vec![],
sources: vec![],
opts: TargetOptions::get_default(),
}
}
pub fn from_parsed_target(
parsed_target: &'a ParsedTarget,
name: &'a str,
all_parsed_targets: &'a HashMap<String, ParsedTarget>,
all_targets: &HashMap<&'a str, Target<'a>>,
inheritance_chain: &mut HashMap<&'a str, &'a str>
) -> Result<HashMap<&'a str, Target<'a>>, ConfigurationError> {
let mut retmap: HashMap<&str, Target> = HashMap::new();
let mut ret = Self::get_default();
if ret.opts.inherit_from == name {
ret.opts.inherit = false;
}
if let Some(v) = &parsed_target.opts {
ret.opts = TargetOptions::from_parsed_target_options(v)?;
}
if ret.opts.inherit {
let inherit_target: Target;
match all_targets.get(ret.opts.inherit_from) {
Some(v) => {
inherit_target = v.clone()
}
None => {
match all_parsed_targets.get(ret.opts.inherit_from) {
Some(v) => {
let inherited_targets: HashMap<&str, Target>;
if let Some(_) = inheritance_chain.get(ret.opts.inherit_from) {
let mut message = format!("inheritance dependency cylce detected: ");
for (targ_name, depends_on) in inheritance_chain {
message.push_str(&format!("`{}` depends on `{}`, ", targ_name, depends_on));
}
message.push_str(&format!("and `{}` depends on `{}`", name, ret.opts.inherit_from));
return Err(ConfigurationError { message });
}
inheritance_chain.insert(name, ret.opts.inherit_from);
inherited_targets = Self::from_parsed_target(v, ret.opts.inherit_from, all_parsed_targets, all_targets, inheritance_chain)?;
inherit_target = inherited_targets.get(ret.opts.inherit_from).unwrap().clone();
retmap.extend(inherited_targets.into_iter());
}
None => {
return Err(ConfigurationError {
message:
format!("target `{0}` trying to inherit from target `{1}`, but target `{1}` does not exist",
name,
ret.opts.inherit_from)
});
}
}
}
}
if let None = parsed_target.outfile {
ret.outfile = inherit_target.outfile;
}
if let None = parsed_target.compiler {
ret.compiler = inherit_target.compiler;
}
if let None = parsed_target.linker {
ret.linker = inherit_target.linker;
}
for string in inherit_target.compiler_flags {
ret.compiler_flags.push(string);
}
for string in inherit_target.linker_flags {
ret.linker_flags.push(string);
}
for string in inherit_target.linker_libs {
ret.linker_libs.push(string);
}
for string in inherit_target.sources {
ret.sources.push(string);
}
}
if let Some(v) = &parsed_target.outfile {
ret.outfile = v;
}
if let Some(v) = &parsed_target.compiler {
ret.compiler = v;
}
if let Some(v) = &parsed_target.compiler_flags {
for string in v {
ret.compiler_flags.push(string);
}
}
if let Some(v) = &parsed_target.linker {
ret.linker = v;
} else {
if let Some(v) = &parsed_target.compiler {
ret.linker = v;
}
}
if let Some(v) = &parsed_target.linker_flags {
for string in v {
ret.linker_flags.push(string);
}
}
if let Some(v) = &parsed_target.linker_libs {
for string in v {
ret.linker_libs.push(string);
}
}
if let Some(v) = &parsed_target.sources {
for string in v {
ret.sources.push(string);
}
}
retmap.insert(name, ret);
Ok(retmap)
}
}

38
src/parsed_config_processing/target_options.rs Normal file
View file

@ -0,0 +1,38 @@
use super::parsed_config_processing::*;
use crate::ngen_toml::*;
#[derive(Debug, Clone)]
pub struct TargetOptions<'a> {
pub inherit: bool,
pub inherit_from: &'a str,
pub default: bool,
}
impl<'a> TargetOptions<'a> {
pub fn get_default() -> Self {
TargetOptions {
inherit: true,
inherit_from: "main",
default: false,
}
}
pub fn from_parsed_target_options(
parsed_target_options: &'a ParsedTargetOptions,
) -> Result<Self, ConfigurationError> {
let mut ret = Self::get_default();
if let Some(v) = &parsed_target_options.inherit {
ret.inherit = *v;
}
if let Some(v) = &parsed_target_options.inherit_from {
ret.inherit_from = v;
}
if let Some(v) = &parsed_target_options.default {
ret.default = *v;
}
Ok(ret)
}
}

90
src/target.rs
View file

@ -1,90 +0,0 @@
use toml::Table;
use crate::config_file_parsing::*;
use crate::target_options::*;
#[derive(Debug, Clone)]
pub struct Target<'a> {
pub name: &'a str,
pub outfile: &'a str,
pub compiler: &'a str,
pub compiler_flags: Vec<&'a str>,
pub linker: &'a str,
pub linker_flags: Vec<&'a str>,
pub linker_libs: Vec<&'a str>,
pub sources: Vec<&'a str>,
pub is_default: bool,
pub opts: TargetOptions<'a>,
}
impl<'a> Target<'a> {
pub fn get_default() -> Self {
Target {
name: "",
outfile: "a.out",
compiler: "cc",
compiler_flags: vec![""],
linker: "cc",
linker_flags: vec![""],
linker_libs: vec![""],
sources: vec![""],
is_default: false,
opts: TargetOptions::get_default(),
}
}
pub fn from_table(
table: &'a Table,
name: &'a str,
key_path: String,
) -> Result<Self, ConfigFileError<'a>> {
let mut ret = Self::get_default();
if let Some(v) = get_key_as_table(table, "opts", format!("{key_path}.opts"))? {
ret.opts = TargetOptions::from_table(&v, format!("{key_path}.opts"))?;
}
ret.name = name;
if let Some(v) = get_key_as_str(table, "outfile", format!("{key_path}.outfile"))? {
ret.outfile = v;
}
if let Some(v) = get_key_as_str(table, "compiler", format!("{key_path}.compiler"))? {
ret.compiler = v;
}
if let Some(v) = get_key_as_vec_str(
table,
"compiler_flags",
format!("{key_path}.compiler_flags"),
)? {
ret.compiler_flags = v;
}
if let Some(v) = get_key_as_str(table, "linker", format!("{key_path}.linker"))? {
ret.linker = v;
}
if let Some(v) =
get_key_as_vec_str(table, "linker_flags", format!("{key_path}.linker_flags"))?
{
ret.linker_flags = v;
}
if let Some(v) =
get_key_as_vec_str(table, "linker_libs", format!("{key_path}.linker_libs"))?
{
ret.linker_libs = v;
}
if let Some(v) = get_key_as_vec_str(table, "sources", format!("{key_path}.sources"))? {
ret.sources = v;
}
if let Some(v) = get_key_as_bool(table, "is_default", format!("{key_path}.is_default"))? {
ret.is_default = v;
}
Ok(ret)
}
}

30
src/target_options.rs
View file

@ -1,30 +0,0 @@
use toml::{Table, Value};
use crate::config_file_parsing::*;
#[derive(Debug, Clone)]
pub struct TargetOptions<'a> {
pub inherit: bool,
pub inherit_from: &'a str,
}
impl<'a> TargetOptions<'a> {
pub fn get_default() -> Self {
TargetOptions {
inherit: true,
inherit_from: "main",
}
}
pub fn from_table(table: &'a Table, key_path: String) -> Result<Self, ConfigFileError<'a>> {
let mut ret = Self::get_default();
if let Some(v) = get_key_as_bool(table, "inherit", format!("{key_path}.inherit"))? {
ret.inherit = v;
}
if let Some(v) = get_key_as_str(table, "inherit_from", format!("{key_path}.inherit_from"))?
{
ret.inherit_from = v;
}
Ok(ret)
}
}