From fd79fd18c6c32884e757e91b8629c87af4cbf34e Mon Sep 17 00:00:00 2001
From: Charlie Stanton <charlie@shtanton.xyz>
Date: Sat, 30 Mar 2024 21:09:32 +0000
Subject: Add map destructure

---
 subex/parse.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'subex/parse.go')

diff --git a/subex/parse.go b/subex/parse.go
index 98821fd..1e17bb3 100644
--- a/subex/parse.go
+++ b/subex/parse.go
@@ -35,6 +35,7 @@ const (
 	StringStructure
 	ArrayStructure
 	ArrayValuesStructure
+	MapStructure
 )
 func (s Structure) String() string {
 	switch s {
@@ -46,6 +47,8 @@ func (s Structure) String() string {
 		return "@"
 	case ArrayValuesStructure:
 		return ":"
+	case MapStructure:
+		return "#"
 	default:
 		panic("Invalid structure")
 	}
@@ -329,6 +332,9 @@ func parseDestructure(l RuneReader, destructure Structure, inType Type) (lhs Sub
 	case ArrayValuesStructure:
 		innerInType = ValueType
 		expectedInType = ValueType
+	case MapStructure:
+		innerInType = ValueType
+		expectedInType = ValueType
 	default:
 		panic("Invalid structure")
 	}
@@ -356,6 +362,9 @@ func parseDestructure(l RuneReader, destructure Structure, inType Type) (lhs Sub
 	case ':':
 		structure = ArrayValuesStructure
 		expectedInnerOutType = ValueType
+	case '#':
+		structure = MapStructure
+		expectedInnerOutType = ValueType
 	default:
 		panic("Missing matching destructure")
 	}
@@ -371,6 +380,8 @@ func parseDestructure(l RuneReader, destructure Structure, inType Type) (lhs Sub
 		outType = ValueType
 	case ArrayValuesStructure:
 		outType = ValueType
+	case MapStructure:
+		outType = ValueType
 	}
 
 	lhs = SubexASTDestructure {
@@ -400,6 +411,8 @@ func parseSubex(l RuneReader, minPower int, inType Type) (lhs SubexAST, outType
 			lhs, outType = parseDestructure(l, ArrayStructure, inType)
 		case ':':
 			lhs, outType = parseDestructure(l, ArrayValuesStructure, inType)
+		case '#':
+			lhs, outType = parseDestructure(l, MapStructure, inType)
 		// TODO
 		// case '[':
 		// 	rangeParts := parseRangeSubex(l)
-- 
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