Header files missing "#pragma once"

Fixes #604

Signed-off-by: Roberto Raggi <[email protected]>

Author: robertoraggi

packages/cxx-gen-ast/src/kwgen.ts

@@ -25,11 +25,13 @@ export default function kwgen(options: Options) {
   } = options;
 
   let out: string[] = [];
-  const emit = (s: string) => out.push(s);
+  const emit = (s: string = "") => out.push(s);
 
   if (copyright !== undefined) {
     emit("// Generated file by: kwgen.ts");
     emit(copyright);
+    emit();
+    emit("#pragma once");
   }
 
   const keywordsByLength = Map.groupBy(keywords, (s) => s.length);

src/parser/cxx/literals.h

@@ -18,6 +18,8 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
+
 #include <cxx/cxx_fwd.h>
 
 #include <cstdint>

src/parser/cxx/literals_fwd.h

@@ -18,6 +18,8 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
+
 #include <cxx/cxx_fwd.h>
 
 namespace cxx {

src/parser/cxx/name_lookup.h

@@ -18,6 +18,8 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
+
 #include <cxx/ast_fwd.h>
 #include <cxx/names_fwd.h>
 #include <cxx/symbols_fwd.h>

src/parser/cxx/private/c_keywords-priv.h

@@ -19,6 +19,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
 static inline auto classifyC2(const char* s) -> cxx::TokenKind {
   if (s[0] == 'd') {
     if (s[1] == 'o') {

src/parser/cxx/private/keywords-priv.h

@@ -19,6 +19,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
 static inline auto classify2(const char* s) -> cxx::TokenKind {
   if (s[0] == 'd') {
     if (s[1] == 'o') {

src/parser/cxx/private/pp_directives-priv.h

@@ -19,6 +19,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
 enum class PreprocessorDirectiveKind {
   T_IDENTIFIER,
   T_DEFINE,

src/parser/cxx/symbol_instantiation.h

@@ -18,6 +18,8 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+#pragma once
+
 #include <cxx/names_fwd.h>
 #include <cxx/symbols_fwd.h>
 #include <cxx/types_fwd.h>