Swift: add possibility to add flags in tests

Author: redsun82

swift/tools/qltest.sh

@@ -7,5 +7,8 @@ QLTEST_LOG="$CODEQL_EXTRACTOR_SWIFT_LOG_DIR"/qltest.log
 export LD_LIBRARY_PATH="$CODEQL_EXTRACTOR_SWIFT_ROOT/tools/$CODEQL_PLATFORM"
 
 for src in *.swift; do
-  "$CODEQL_EXTRACTOR_SWIFT_ROOT/tools/$CODEQL_PLATFORM/extractor" -sdk "$CODEQL_EXTRACTOR_SWIFT_ROOT/qltest/$CODEQL_PLATFORM/sdk" -c -primary-file $src >> $QLTEST_LOG 2>&1
+  opts=(-sdk "$CODEQL_EXTRACTOR_SWIFT_ROOT/qltest/$CODEQL_PLATFORM/sdk" -c -primary-file $src)
+  opts+=($(sed -n '1 s=//codeql-extractor-options:==p' $src))
+  echo -e "calling extractor with flags: ${opts[@]}\n" >> $QLTEST_LOG
+  "$CODEQL_EXTRACTOR_SWIFT_ROOT/tools/$CODEQL_PLATFORM/extractor" "${opts[@]}" >> $QLTEST_LOG 2>&1
 done