girparser: Handle duplicated and unnamed symbols

Issue warnings and skip such symbols to avoid errors on vala's side.

4 files changed, 60 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index be5b9f4e7..91ab42c02 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -847,7 +847,9 @@ TESTS = \
 	gir/parameter-nullable-out-simple-type.test \
 	gir/property-non-readable.test \
 	gir/signal-virtual.test \
+	gir/symbol-redefined.test \
 	gir/symbol-type-csuffix.test \
+	gir/symbol-without-name.test \
 	gir/union.test \
 	gir/union-transparent.test \
 	girwriter/class-final.test \
diff --git a/tests/gir/symbol-redefined.test b/tests/gir/symbol-redefined.test
new file mode 100644
index 000000000..1ae3b3b5a
--- /dev/null
+++ b/tests/gir/symbol-redefined.test
@@ -0,0 +1,27 @@
+GIR
+
+Input:
+
+<enumeration name="Test"
+             c:type="Test">
+  <member name="bar"
+          value="0"
+          c:identifier="TEST_BAR">
+  </member>
+  <member name="foo"
+          value="1"
+          c:identifier="TEST_FOO">
+  </member>
+  <member name="bar"
+          value="0"
+          c:identifier="TEST_BAR">
+  </member>
+</enumeration>
+
+Output:
+
+[CCode (cheader_filename = "test.h", cname = "Test", cprefix = "TEST_", has_type_id = false)]
+public enum Test {
+	BAR,
+	FOO
+}
diff --git a/tests/gir/symbol-without-name.test b/tests/gir/symbol-without-name.test
new file mode 100644
index 000000000..4b56f6bdf
--- /dev/null
+++ b/tests/gir/symbol-without-name.test
@@ -0,0 +1,19 @@
+GIR
+
+Input:
+
+<function name="" c:identifier="test_foo">
+  <return-value transfer-ownership="none">
+    <type name="void"/>
+  </return-value>
+</function>
+<function name="bar" c:identifier="test_bar">
+  <return-value transfer-ownership="none">
+    <type name="void"/>
+  </return-value>
+</function>
+
+Output:
+
+[CCode (cheader_filename = "test.h")]
+public static void bar ();
diff --git a/vala/valagirparser.vala b/vala/valagirparser.vala
index 6b3d69357..88f38434b 100644
--- a/vala/valagirparser.vala
+++ b/vala/valagirparser.vala
@@ -1535,6 +1535,18 @@ public class Vala.GirParser : CodeVisitor {
 	const string GIR_VERSION = "1.2";
 
 	static void add_symbol_to_container (Symbol container, Symbol sym) {
+		if (sym.name == "") {
+			Report.warning (sym.source_reference, "node with empty name");
+			return;
+		} else if (sym.name != null) {
+			Symbol? old_sym = container.scope.lookup (sym.name);
+			if (old_sym != null) {
+				Report.warning (sym.source_reference, "`%s' already contains a definition for `%s'", container.name, sym.name);
+				Report.notice (old_sym.source_reference, "previous definition of `%s' was here", old_sym.name);
+				return;
+			}
+		}
+
 		if (container is Class) {
 			unowned Class cl = (Class) container;