suppress warnings from dependencies

Author: Frotty

de.peeeq.wurstscript/src/main/java/de/peeeq/wurstscript/gui/WurstGui.java

@@ -21,9 +21,22 @@ public abstract class WurstGui {
     public abstract void showInfoMessage(String message);
 
     public void sendError(CompileError err) {
+        if (shouldSuppressWarning(err)) {
+            return;
+        }
         errors.add(err);
     }
 
+    private boolean shouldSuppressWarning(CompileError err) {
+        if (err.getErrorType() != ErrorType.WARNING) {
+            return false;
+        }
+        String file = err.getSource().getFile();
+        String normalized = file.replace('\\', '/').toLowerCase();
+        return normalized.contains("/_build/dependencies/")
+            || normalized.startsWith("_build/dependencies/");
+    }
+
     public void clearErrors() {
         errors.clear();
     }

de.peeeq.wurstscript/src/test/java/tests/wurstscript/tests/BugTests.java

@@ -176,6 +176,39 @@ public void classVarInitOrderShouldError_770() {
                 "endpackage");
     }
 
+    @Test
+    public void dependencyDiagnosticsAreMuted() {
+        CompilationResult res = test()
+            .setStopOnFirstError(false)
+            .withCu(compilationUnit("_build/dependencies/dep/Dep.wurst",
+                "package dep",
+                "init",
+                "    if true",
+                "endpackage"))
+            .run();
+
+        Assert.assertTrue(res.getGui().getErrorList().isEmpty(), "Expected no errors.");
+        Assert.assertTrue(res.getGui().getWarningList().isEmpty(),
+            "Expected no warnings from _build/dependencies sources.");
+    }
+
+    @Test
+    public void projectDiagnosticsStayVisible() {
+        CompilationResult res = test()
+            .setStopOnFirstError(false)
+            .withCu(compilationUnit("wurst/Local.wurst",
+                "package local",
+                "init",
+                "    if true",
+                "endpackage"))
+            .run();
+
+        Assert.assertTrue(res.getGui().getErrorList().isEmpty(), "Expected no errors.");
+        Assert.assertTrue(res.getGui().getWarningList().stream()
+                .anyMatch(w -> w.getMessage().contains("empty then-block")),
+            "Expected warning for project sources.");
+    }
+
 
     @Test
     public void test_for_from() {