starting a new assumption on the same depth creates a new scope, added scoping detections for all rules

1 files changed, 10 insertions, 2 deletions

diff --git a/src/eval.c b/src/eval.c
index 9132272..4e978b6 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -27,7 +27,11 @@ char just_is_sound(line_t line, lineSet_t lines) {
 		case DISJUNCT_INTRO:
 			a = *prop.propA;
 			b = *prop.propB;
-			w = lines.lines[just.references[0] - 1].proposition;
+			wl = lines.lines[just.references[0] - 1];
+			w = wl.proposition;
+			if (!seqlt(line.scope, wl.scope)) {
+				return 0;
+			}
 			return peq(a, w) || peq(b, w);
 		case IMPLICATION_INTRO:
 			a = *prop.propA;
@@ -51,7 +55,11 @@ char just_is_sound(line_t line, lineSet_t lines) {
 			/* ensure that the arguments are in the correct scope */
 			return as.scope.id == res.scope.id && as.scope.depth == line.scope.depth + 1;
 		case CONJUNCT_ELIM:
-			w = lines.lines[just.references[0] - 1].proposition;
+			wl = lines.lines[just.references[0] - 1];
+			w = wl.proposition;
+			if (!seqlt(line.scope, wl.scope)) {
+				return 0;
+			}
 			return peq(prop, *w.propA) || peq(prop, *w.propB);
 		default:
 			return 0;