internal: prepare to use standard .run pattern for subcommands

crates/rust-analyzer/src/cli/flags.rs

@@ -0,0 +1,210 @@
+//! Grammar for the command-line arguments.
+#![allow(unreachable_pub)]
+use std::path::PathBuf;
+
+use ide_ssr::{SsrPattern, SsrRule};
+
+use crate::cli::Verbosity;
+
+xflags::xflags! {
+    src "./src/bin/flags.rs"
+
+    /// LSP server for the Rust programming language.
+    cmd rust-analyzer {
+        /// Verbosity level, can be repeated multiple times.
+        repeated -v, --verbose
+        /// Verbosity level.
+        optional -q, --quiet
+
+        /// Log to the specified file instead of stderr.
+        optional --log-file path: PathBuf
+        /// Flush log records to the file immediately.
+        optional --no-log-buffering
+
+        /// Wait until a debugger is attached to (requires debug build).
+        optional --wait-dbg
+
+        default cmd lsp-server {
+            /// Print version.
+            optional --version
+            /// Print help.
+            optional -h, --help
+
+            /// Dump a LSP config JSON schema.
+            optional --print-config-schema
+        }
+
+        /// Parse stdin.
+        cmd parse {
+            /// Suppress printing.
+            optional --no-dump
+        }
+
+        /// Parse stdin and print the list of symbols.
+        cmd symbols {}
+
+        /// Highlight stdin as html.
+        cmd highlight {
+            /// Enable rainbow highlighting of identifiers.
+            optional --rainbow
+        }
+
+        /// Batch typecheck project and print summary statistics
+        cmd analysis-stats
+            /// Directory with Cargo.toml.
+            required path: PathBuf
+        {
+            /// Randomize order in which crates, modules, and items are processed.
+            optional --randomize
+            /// Run type inference in parallel.
+            optional --parallel
+            /// Collect memory usage statistics.
+            optional --memory-usage
+
+            /// Only analyze items matching this path.
+            optional -o, --only path: String
+            /// Also analyze all dependencies.
+            optional --with-deps
+            /// Don't load sysroot crates (`std`, `core` & friends).
+            optional --no-sysroot
+
+            /// Don't run build scripts or load `OUT_DIR` values by running `cargo check` before analysis.
+            optional --disable-build-scripts
+            /// Don't use expand proc macros.
+            optional --disable-proc-macros
+            /// Only resolve names, don't run type inference.
+            optional --skip-inference
+        }
+
+        cmd diagnostics
+            /// Directory with Cargo.toml.
+            required path: PathBuf
+        {
+            /// Don't run build scripts or load `OUT_DIR` values by running `cargo check` before analysis.
+            optional --disable-build-scripts
+            /// Don't use expand proc macros.
+            optional --disable-proc-macros
+        }
+
+        cmd ssr
+            /// A structured search replace rule (`$a.foo($b) ==> bar($a, $b)`)
+            repeated rule: SsrRule
+        {}
+
+        cmd search
+            /// A structured search replace pattern (`$a.foo($b)`)
+            repeated pattern: SsrPattern
+        {
+            /// Prints debug information for any nodes with source exactly equal to snippet.
+            optional --debug snippet: String
+        }
+
+        cmd proc-macro {}
+    }
+}
+
+// generated start
+// The following code is generated by `xflags` macro.
+// Run `env UPDATE_XFLAGS=1 cargo build` to regenerate.
+#[derive(Debug)]
+pub struct RustAnalyzer {
+    pub verbose: u32,
+    pub quiet: bool,
+    pub log_file: Option<PathBuf>,
+    pub no_log_buffering: bool,
+    pub wait_dbg: bool,
+    pub subcommand: RustAnalyzerCmd,
+}
+
+#[derive(Debug)]
+pub enum RustAnalyzerCmd {
+    LspServer(LspServer),
+    Parse(Parse),
+    Symbols(Symbols),
+    Highlight(Highlight),
+    AnalysisStats(AnalysisStats),
+    Diagnostics(Diagnostics),
+    Ssr(Ssr),
+    Search(Search),
+    ProcMacro(ProcMacro),
+}
+
+#[derive(Debug)]
+pub struct LspServer {
+    pub version: bool,
+    pub help: bool,
+    pub print_config_schema: bool,
+}
+
+#[derive(Debug)]
+pub struct Parse {
+    pub no_dump: bool,
+}
+
+#[derive(Debug)]
+pub struct Symbols;
+
+#[derive(Debug)]
+pub struct Highlight {
+    pub rainbow: bool,
+}
+
+#[derive(Debug)]
+pub struct AnalysisStats {
+    pub path: PathBuf,
+
+    pub randomize: bool,
+    pub parallel: bool,
+    pub memory_usage: bool,
+    pub only: Option<String>,
+    pub with_deps: bool,
+    pub no_sysroot: bool,
+    pub disable_build_scripts: bool,
+    pub disable_proc_macros: bool,
+    pub skip_inference: bool,
+}
+
+#[derive(Debug)]
+pub struct Diagnostics {
+    pub path: PathBuf,
+
+    pub disable_build_scripts: bool,
+    pub disable_proc_macros: bool,
+}
+
+#[derive(Debug)]
+pub struct Ssr {
+    pub rule: Vec<SsrRule>,
+}
+
+#[derive(Debug)]
+pub struct Search {
+    pub pattern: Vec<SsrPattern>,
+
+    pub debug: Option<String>,
+}
+
+#[derive(Debug)]
+pub struct ProcMacro;
+
+impl RustAnalyzer {
+    pub const HELP: &'static str = Self::HELP_;
+
+    pub fn from_env() -> xflags::Result<Self> {
+        Self::from_env_()
+    }
+}
+// generated end
+
+impl RustAnalyzer {
+    pub fn verbosity(&self) -> Verbosity {
+        if self.quiet {
+            return Verbosity::Quiet;
+        }
+        match self.verbose {
+            0 => Verbosity::Normal,
+            1 => Verbosity::Verbose,
+            _ => Verbosity::Spammy,
+        }
+    }
+}