add a feature flag to disable printlns in kcl-lib for the lsp

.github/workflows/cargo-build.yml

@@ -0,0 +1,40 @@
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '**/Cargo.toml'
+      - '**/Cargo.lock'
+      - '**/rust-toolchain.toml'
+      - '**.rs'
+      - .github/workflows/cargo-build.yml
+  pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+name: cargo build
+jobs:
+  cargobuild:
+    name: cargo build
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        dir: ['src/wasm-lib']
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install latest rust
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: stable
+            override: true
+
+      - name: Rust Cache
+        uses: Swatinem/[email protected]
+
+      - name: Run build
+        run: |
+          cd "${{ matrix.dir }}"
+          # We specifically want to test the disable-println feature
+          # Since it is not enabled by default, we need to specify it
+          # This is used in kcl-lsp
+          cargo build --all --features disable-println

.github/workflows/cargo-clippy.yml

@@ -53,7 +53,8 @@ jobs:
       - name: Run clippy
         run: |
           cd "${{ matrix.dir }}"
-          cargo clippy --all --tests --all-features --benches -- -D warnings
+          cargo clippy --all --tests --benches -- -D warnings
+          cargo clippy --all --tests --features pyo3 --benches -- -D warnings
       # If this fails, run "cargo check" to update Cargo.lock,
       # then add Cargo.lock to the PR.
       - name: Check Cargo.lock doesn't need updating

src/wasm-lib/kcl/Cargo.toml

@@ -63,6 +63,9 @@ tower-lsp = { version = "0.20.0", features = ["proposed"] }
 [features]
 default = ["cli", "engine"]
 cli = ["dep:clap"]
+# For the lsp server, when run with stdout for rpc we want to disable println.
+# This is used for editor extensions that use the lsp server.
+disable-println = []
 engine = []
 pyo3 = ["dep:pyo3"]
 

src/wasm-lib/kcl/src/engine/conn.rs

@@ -180,11 +180,7 @@ impl EngineConnection {
             loop {
                 match tcp_read.read().await {
                     Ok(ws_resp) => {
-                        for e in ws_resp.errors.iter().flatten() {
-                            println!("got error message: {} {}", e.error_code, e.message);
-                        }
                         // If we got a batch response, add all the inner responses.
-                        println!("got response: {:?}", ws_resp);
                         if let Some(kittycad::types::OkWebSocketResponseData::ModelingBatch { responses }) =
                             &ws_resp.resp
                         {

src/wasm-lib/kcl/src/lib.rs

@@ -4,6 +4,13 @@
 //! the standard library implementation, a LSP implementation, generator for the docs, and more.
 #![recursion_limit = "1024"]
 
+macro_rules! println {
+    ($($rest:tt)*) => {
+        #[cfg(not(feature = "disable-println"))]
+        std::println!($($rest)*)
+    }
+}
+
 pub mod ast;
 pub mod coredump;
 pub mod docs;

src/wasm-lib/kcl/src/parser/parser_impl.rs

@@ -2907,7 +2907,10 @@ let myBox = box([0,0], -3, -16, -10)
         let tokens = crate::token::lexer(some_program_string).unwrap();
         let parser = crate::parser::Parser::new(tokens);
         let err = parser.ast().unwrap_err();
-        println!("{err}")
+        assert_eq!(
+            err.to_string(),
+            r#"syntax: KclErrorDetails { source_ranges: [SourceRange([30, 36])], message: "All expressions in a pipeline must use the % (substitution operator)" }"#
+        );
     }
 }