1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
//! Command like parsing for rust-analyzer.
//!
//! If run started args, we run the LSP server loop. With a subcommand, we do a
//! one-time batch processing.
use std::{env, path::PathBuf};
use anyhow::{bail, format_err, Result};
use pico_args::Arguments;
use rust_analyzer::cli::{AnalysisStatsCmd, BenchCmd, BenchWhat, Position, Verbosity};
use ssr::{SsrPattern, SsrRule};
use vfs::AbsPathBuf;
pub(crate) struct Args {
pub(crate) verbosity: Verbosity,
pub(crate) log_file: Option<PathBuf>,
pub(crate) no_buffering: bool,
pub(crate) command: Command,
}
pub(crate) enum Command {
Parse { no_dump: bool },
Symbols,
Highlight { rainbow: bool },
AnalysisStats(AnalysisStatsCmd),
Bench(BenchCmd),
Diagnostics { path: PathBuf, load_output_dirs: bool, with_proc_macro: bool },
Ssr { rules: Vec<SsrRule> },
StructuredSearch { debug_snippet: Option<String>, patterns: Vec<SsrPattern> },
ProcMacro,
RunServer,
PrintConfigSchema,
Version,
Help,
}
const HELP: &str = "\
rust-analyzer
USAGE:
rust-analyzer [FLAGS] [COMMAND] [COMMAND_OPTIONS]
FLAGS:
--version Print version
-h, --help Print this help
-v, --verbose
-vv, --spammy
-q, --quiet Set verbosity
--log-file <PATH> Log to the specified file instead of stderr
--no-buffering Flush log records to the file immediately
ENVIRONMENTAL VARIABLES:
RA_LOG Set log filter in env_logger format
RA_PROFILE Enable hierarchical profiler
COMMANDS:
not specified Launch LSP server
parse < main.rs Parse tree
--no-dump Suppress printing
symbols < main.rs Parse input an print the list of symbols
highlight < main.rs Highlight input as html
--rainbow Enable rainbow highlighting of identifiers
analysis-stats <PATH> Batch typecheck project and print summary statistics
<PATH> Directory with Cargo.toml
--randomize Randomize order in which crates, modules, and items are processed
--parallel Run type inference in parallel
--memory-usage Collect memory usage statistics
-o, --only <PATH> Only analyze items matching this path
--with-deps Also analyze all dependencies
--load-output-dirs
Load OUT_DIR values by running `cargo check` before analysis
--with-proc-macro Use proc-macro-srv for proc-macro expanding
analysis-bench <PATH> Benchmark specific analysis operation
<PATH> Directory with Cargo.toml
--highlight <PATH>
Compute syntax highlighting for this file
--complete <PATH:LINE:COLUMN>
Compute completions at this location
--goto-def <PATH:LINE:COLUMN>
Compute goto definition at this location
--memory-usage Collect memory usage statistics
--load-output-dirs
Load OUT_DIR values by running `cargo check` before analysis
--with-proc-macro Use proc-macro-srv for proc-macro expanding
diagnostics <PATH>
<PATH> Directory with Cargo.toml
--load-output-dirs
Load OUT_DIR values by running `cargo check` before analysis
--with-proc-macro Use proc-macro-srv for proc-macro expanding
ssr [RULE...]
<RULE> A structured search replace rule (`$a.foo($b) ==> bar($a, $b)`)
search [PATTERN..]
<PATTERN> A structured search replace pattern (`$a.foo($b)`)
--debug <snippet> Prints debug information for any nodes with source exactly
equal to <snippet>
";
impl Args {
pub(crate) fn parse() -> Result<Args> {
let mut matches = Arguments::from_env();
if matches.contains("--version") {
finish_args(matches)?;
return Ok(Args {
verbosity: Verbosity::Normal,
log_file: None,
command: Command::Version,
no_buffering: false,
});
}
let verbosity = match (
matches.contains(["-vv", "--spammy"]),
matches.contains(["-v", "--verbose"]),
matches.contains(["-q", "--quiet"]),
) {
(true, _, true) => bail!("Invalid flags: -q conflicts with -vv"),
(true, _, false) => Verbosity::Spammy,
(false, false, false) => Verbosity::Normal,
(false, false, true) => Verbosity::Quiet,
(false, true, false) => Verbosity::Verbose,
(false, true, true) => bail!("Invalid flags: -q conflicts with -v"),
};
let log_file = matches.opt_value_from_str("--log-file")?;
let no_buffering = matches.contains("--no-buffering");
if matches.contains(["-h", "--help"]) {
eprintln!("{}", HELP);
return Ok(Args { verbosity, log_file: None, command: Command::Help, no_buffering });
}
if matches.contains("--print-config-schema") {
return Ok(Args { verbosity, log_file, command: Command::PrintConfigSchema, no_buffering }, );
}
let subcommand = match matches.subcommand()? {
Some(it) => it,
None => {
finish_args(matches)?;
return Ok(Args { verbosity, log_file, command: Command::RunServer, no_buffering });
}
};
let command = match subcommand.as_str() {
"parse" => Command::Parse { no_dump: matches.contains("--no-dump") },
"symbols" => Command::Symbols,
"highlight" => Command::Highlight { rainbow: matches.contains("--rainbow") },
"analysis-stats" => Command::AnalysisStats(AnalysisStatsCmd {
randomize: matches.contains("--randomize"),
parallel: matches.contains("--parallel"),
memory_usage: matches.contains("--memory-usage"),
only: matches.opt_value_from_str(["-o", "--only"])?,
with_deps: matches.contains("--with-deps"),
load_output_dirs: matches.contains("--load-output-dirs"),
with_proc_macro: matches.contains("--with-proc-macro"),
path: matches
.opt_free_from_str()?
.ok_or_else(|| format_err!("expected positional argument"))?,
}),
"analysis-bench" => Command::Bench(BenchCmd {
what: {
let highlight_path: Option<String> =
matches.opt_value_from_str("--highlight")?;
let complete_path: Option<Position> =
matches.opt_value_from_str("--complete")?;
let goto_def_path: Option<Position> =
matches.opt_value_from_str("--goto-def")?;
match (highlight_path, complete_path, goto_def_path) {
(Some(path), None, None) => {
let path = env::current_dir().unwrap().join(path);
BenchWhat::Highlight { path: AbsPathBuf::assert(path) }
}
(None, Some(position), None) => BenchWhat::Complete(position),
(None, None, Some(position)) => BenchWhat::GotoDef(position),
_ => panic!(
"exactly one of `--highlight`, `--complete` or `--goto-def` must be set"
),
}
},
memory_usage: matches.contains("--memory-usage"),
load_output_dirs: matches.contains("--load-output-dirs"),
with_proc_macro: matches.contains("--with-proc-macro"),
path: matches
.opt_free_from_str()?
.ok_or_else(|| format_err!("expected positional argument"))?,
}),
"diagnostics" => Command::Diagnostics {
load_output_dirs: matches.contains("--load-output-dirs"),
with_proc_macro: matches.contains("--with-proc-macro"),
path: matches
.opt_free_from_str()?
.ok_or_else(|| format_err!("expected positional argument"))?,
},
"proc-macro" => Command::ProcMacro,
"ssr" => Command::Ssr {
rules: {
let mut acc = Vec::new();
while let Some(rule) = matches.opt_free_from_str()? {
acc.push(rule);
}
acc
},
},
"search" => Command::StructuredSearch {
debug_snippet: matches.opt_value_from_str("--debug")?,
patterns: {
let mut acc = Vec::new();
while let Some(rule) = matches.opt_free_from_str()? {
acc.push(rule);
}
acc
},
},
_ => {
eprintln!("{}", HELP);
return Ok(Args { verbosity, log_file: None, command: Command::Help, no_buffering });
}
};
finish_args(matches)?;
Ok(Args { verbosity, log_file, command, no_buffering })
}
}
fn finish_args(args: Arguments) -> Result<()> {
if !args.finish().is_empty() {
bail!("Unused arguments.");
}
Ok(())
}
|
