Merge pull request #178 from lvignoli/wasm-support

WASM support

.github/workflows/ci.yaml

@@ -47,6 +47,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: taiki-e/install-action@just
       - uses: actions/setup-node@v4
+      - uses: mymindstorm/setup-emsdk@v14
         with:
           node-version: 20
       - name: Get npm cache directory
@@ -66,3 +67,5 @@ jobs:
         run: just --verbose test
       - name: Check if generated files are up to date (warn only)
         run: just --verbose ci-validate-generated-files 0
+      - name: Test WASM build
+        run: just --verbose build-wasm

justfile

@@ -128,6 +128,9 @@ gen *extra-args:
 		clang-format -i src/parser.c || \
 		echo "skipping clang-format"
 
+build-wasm: gen
+    npx tree-sitter build --wasm
+
 alias t := test
 
 # Run tests that are built into tree-sitter, as well as integration and Cargo tests

src/scanner.c

@@ -22,6 +22,10 @@
 #define unused_attr
 #endif
 
+#ifdef __wasm__
+#define assertf(...) (void)0;
+#else
+
 #ifndef fprintf_s
 #define fprintf_s fprintf // NOLINT
 #endif
@@ -55,6 +59,8 @@
 #define __builtin_expect(a, b) a
 #endif
 
+#endif
+
 #define SBYTES sizeof(Scanner)
 
 enum TokenType {