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use anyhow::Result;
use serde_derive::{Deserialize, Serialize};
use structopt::StructOpt;
use std::path::PathBuf;
#[derive(Debug, Clone, StructOpt, Deserialize, Serialize)]
#[serde(rename_all = "kebab-case")]
pub(crate) struct Config {
pub(super) compile_commands_location: PathBuf,
pub(super) extra_args: Vec<String>,
}
#[derive(Debug, Clone, Default, StructOpt, Deserialize, Serialize)]
#[serde(rename_all = "kebab-case")]
pub(crate) struct ProvidedConfig {
#[structopt(long = "clang-compile-commands-location")]
pub(super) compile_commands_location: Option<PathBuf>,
#[structopt(long = "clang-extra-args", number_of_values = 1)]
pub(super) extra_args: Option<Vec<String>>,
}
impl Default for Config {
fn default() -> Self {
Config::from_merge(ProvidedConfig::default(), ProvidedConfig::default())
// Currently errors out only on CLI parse fail with clang's extra args
.unwrap()
}
}
fn default_extra_args() -> Vec<String> {
vec![
// We don't parse function bodies so libclang report every arguments/functions/etc. as unused.
String::from("-Wno-unused-const-variable"),
String::from("-Wno-unused-function"),
String::from("-Wno-unused-parameter"),
String::from("-Wno-unused-private-field"),
String::from("-Wno-unused-variable"),
// We don't "link" so every linker arguments from the compile_commands.json gets reported
String::from("-Qunused-arguments"),
]
}
impl Config {
pub(crate) fn from_merge(cli: ProvidedConfig, config: ProvidedConfig) -> Result<Self> {
let mut extra_args = Vec::new();
if let Some(cli_extra_args) = cli.extra_args {
for args in cli_extra_args {
extra_args.append(&mut ::shell_words::split(&args)?);
}
}
extra_args.append(&mut config.extra_args.unwrap_or_else(default_extra_args));
Ok(Self {
compile_commands_location: cli
.compile_commands_location
.or(config.compile_commands_location)
.unwrap_or_else(|| PathBuf::from(r".")),
extra_args,
})
}
}
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