Add benchmarks

vhdl_lang/Cargo.toml

@@ -31,6 +31,11 @@ itertools = "0"
 tempfile = "3"
 pretty_assertions = "1"
 assert_matches = "1"
+brunch = "0"
+
+[[bench]]
+name = "benchmark"
+harness = false
 
 [features]
 default = []

vhdl_lang/benches/benchmark.rs

@@ -0,0 +1,71 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+//
+// Copyright (c) 2023, Olof Kraigher [email protected]
+
+use brunch::{Bench, Benches};
+use std::path::Path;
+use vhdl_lang::{Config, MessagePrinter, NullMessages, Project};
+
+fn load_config(include_example_project: bool) -> Config {
+    let repo_root = Path::new(env!("CARGO_MANIFEST_DIR")).join("..");
+
+    let mut config = Config::default();
+    config.append(
+        &Config::read_file_path(&repo_root.join("vhdl_libraries").join("vhdl_ls.toml"))
+            .expect("Failed to read installed config file"),
+        &mut MessagePrinter::default(),
+    );
+
+    if include_example_project {
+        config.append(
+            &Config::read_file_path(&repo_root.join("example_project").join("vhdl_ls.toml"))
+                .expect("Failed to read project config file"),
+            &mut MessagePrinter::default(),
+        );
+    }
+
+    config
+}
+
+fn main() {
+    let mut benches = Benches::default();
+
+    {
+        // Only use standard libraries to benchmark parse and analyze as the time taken to get 100 samples
+        // is very big with the example project
+        let config = load_config(false);
+        benches.push(Bench::new("parse and analyze").with_samples(10).run(|| {
+            let mut project = Project::from_config(config.clone(), &mut NullMessages);
+            project.analyse();
+        }));
+    }
+
+    {
+        let mut project = Project::from_config(load_config(true), &mut NullMessages);
+        project.analyse();
+
+        let integer = project
+        .public_symbols()
+        .find(|ent| matches!(ent.designator().as_identifier(), Some(sym) if sym.name_utf8() == "INTEGER"))
+        .unwrap();
+
+        benches.push(Bench::new("find all references").run(|| {
+            assert!(!project.find_all_references(integer).is_empty());
+        }));
+
+        let integer_pos = integer.decl_pos().unwrap();
+        benches.push(Bench::new("item at cursor").run(|| {
+            assert_eq!(
+                project
+                    .item_at_cursor(&integer_pos.source, integer_pos.start())
+                    .unwrap()
+                    .1,
+                integer
+            );
+        }));
+    }
+
+    benches.finish();
+}