Changes parser so the storing operator is postfix instead of prefix

1 files changed, 10 insertions, 14 deletions

diff --git a/subex/parse.go b/subex/parse.go
index 0208142..2389c3b 100644
--- a/subex/parse.go
+++ b/subex/parse.go
@@ -206,22 +206,9 @@ func parseSubex(l *RuneReader, minPower int) SubexAST {
 		case '[':
 			rangeParts := parseRangeSubex(l)
 			lhs = SubexASTRange {rangeParts}
-		case ')', '|', ';', '{', '+':
+		case ')', '|', ';', '{', '+', '$':
 			l.rewind()
 			return nil
-		case '$':
-			slot := l.next()
-			if slot == eof {
-				panic("Missing slot character")
-			}
-			match := parseSubex(l, 100)
-			if match == nil {
-				panic("Missing regex for store")
-			}
-			lhs = SubexASTStore{
-				match: match,
-				slot: slot,
-			}
 		case '"':
 			replacement := parseReplacement(l)
 			lhs = SubexASTOutput{replacement}
@@ -249,6 +236,15 @@ func parseSubex(l *RuneReader, minPower int) SubexAST {
 				}
 			case r == '+' && minPower <= 8:
 				lhs = SubexASTSum {lhs}
+			case r == '$' && minPower <= 8:
+				slot := l.next()
+				if slot == eof {
+					panic("Missing slot character")
+				}
+				lhs = SubexASTStore{
+					match: lhs,
+					slot: slot,
+				}
 			case r == '|' && minPower <= 4:
 				rhs := parseSubex(l, 5)
 				if rhs == nil {