matp: Remove accidental switch fallthrough (#9082)

Author: bejado

libs/filament-matp/src/MaterialLexer.cpp

@@ -85,8 +85,8 @@ bool MaterialLexer::readLexeme() noexcept {
         case MaterialType::BLOCK:
             if (!readBlock()) {
                 nextMaterialType = MaterialType::UNKNOWN;
-                break;
             }
+            break;
         case MaterialType::IDENTIFIER: readIdentifier(); break;
         case MaterialType::UNKNOWN:    readUnknown();    break;
         default:

libs/filament-matp/tests/test_matp.cpp

@@ -95,6 +95,16 @@ TEST_F(MaterialLexer, MaterialParser) {
     EXPECT_EQ(result, true);
 }
 
+TEST_F(MaterialLexer, NoSpaceBetweenBlockAndIdentifier) {
+    matp::MaterialLexer materialLexer;
+    static std::string source(R"(
+        material {}fragment {}
+    )");
+    materialLexer.lex(source.c_str(), source.size(), 1);
+    auto lexemes = materialLexer.getLexemes();
+    EXPECT_EQ(lexemes.size(), 4);
+}
+
 TEST_F(MaterialLexer, MaterialParserWithToolSection) {
     matp::MaterialParser parser;
     TestMaterialParser testParser(parser);
@@ -285,4 +295,4 @@ TEST_F(MaterialLexer, JsonMaterialParser) {
 int main(int argc, char** argv) {
     ::testing::InitGoogleTest(&argc, argv);
     return RUN_ALL_TESTS();
-}
+}