map: fix map.clone, refactor, fix map_get_1, map_set_1 non-string keys (#7538)

vlib/builtin/map.v

@@ -139,18 +139,10 @@ fn (d &DenseArray) has_index(i int) bool {
 	return d.deletes == 0 || unsafe { d.all_deleted[i] } == 0
 }
 
-[inline]
+// Make space to append an element to array and return index
-fn (d &DenseArray) clone_key(dest voidptr, pkey voidptr) {
-	unsafe {
-		s := (*&string(pkey)).clone()
-		C.memcpy(dest, &s, d.key_bytes)
-	}
-}
-
-// Push element to array and return index
 // The growth-factor is roughly 1.125 `(x + (x >> 3))`
 [inline]
-fn (mut d DenseArray) push(key voidptr, value voidptr) int {
+fn (mut d DenseArray) push() int {
 	if d.cap == d.len {
 		d.cap += d.cap >> 3
 		unsafe {
@@ -166,9 +158,6 @@ fn (mut d DenseArray) push(key voidptr, value voidptr) int {
 		if d.deletes != 0 {
 			d.all_deleted[push_index] = 0
 		}
-		ptr := d.key(push_index)
-		d.clone_key(ptr, key)
-		C.memcpy(byteptr(ptr) + d.key_bytes, value, d.value_bytes)
 	}
 	d.len++
 	return push_index
@@ -281,6 +270,14 @@ fn (m &map) key_to_index(pkey voidptr) (u32, u32) {
 	return u32(index), u32(meta)
 }
 
+[inline]
+fn (m &map) clone_key(dest voidptr, pkey voidptr) {
+	unsafe {
+		s := (*&string(pkey)).clone()
+		C.memcpy(dest, &s, m.key_bytes)
+	}
+}
+
 fn (m &map) free_key(pkey voidptr) {
 	(*&string(pkey)).free()
 }
@@ -369,7 +366,12 @@ fn (mut m map) set_1(key voidptr, value voidptr) {
 		index += 2
 		meta += probe_inc
 	}
-	kv_index := m.key_values.push(key, value)
+	kv_index := m.key_values.push()
+	unsafe {
+		pkey := m.key_values.key(kv_index)
+		m.clone_key(pkey, key)
+		C.memcpy(byteptr(pkey) + m.key_bytes, value, m.value_bytes)
+	}
 	m.meta_greater(index, meta, u32(kv_index))
 	m.len++
 }
@@ -580,7 +582,7 @@ pub fn (m &map) keys() []string {
 		}
 		unsafe {
 			pkey := m.key_values.key(i)
-			m.key_values.clone_key(item, pkey)
+			m.clone_key(item, pkey)
 			item += m.key_bytes
 		}
 	}
@@ -595,7 +597,7 @@ pub fn (m &map) keys_1() array {
 		for i := 0; i < m.key_values.len; i++ {
 			unsafe {
 				pkey := m.key_values.key(i)
-				m.key_values.clone_key(item, pkey)
+				m.clone_key(item, pkey)
 				item += m.key_bytes
 			}
 		}
@@ -607,13 +609,14 @@ pub fn (m &map) keys_1() array {
 		}
 		unsafe {
 			pkey := m.key_values.key(i)
-			m.key_values.clone_key(item, pkey)
+			m.clone_key(item, pkey)
 			item += m.key_bytes
 		}
 	}
 	return keys
 }
 
+// warning: only copies keys, does not clone
 [unsafe]
 pub fn (d &DenseArray) clone() DenseArray {
 	res := DenseArray{
@@ -632,7 +635,6 @@ pub fn (d &DenseArray) clone() DenseArray {
 		}
 		res.data = memdup(d.data, d.cap * d.slot_bytes)
 	}
-	// FIXME clone each key
 	return res
 }
 
@@ -651,6 +653,13 @@ pub fn (m &map) clone() map {
 		len: m.len
 	}
 	unsafe { C.memcpy(res.metas, m.metas, metasize) }
+	// clone keys
+	for i in 0 .. m.key_values.len {
+		if !m.key_values.has_index(i) {
+			continue
+		}
+		m.clone_key(res.key_values.key(i), m.key_values.key(i))
+	}
 	return res
 }
 

vlib/v/gen/cgen.v

@@ -1726,6 +1726,7 @@ fn (mut g Gen) gen_assign_stmt(assign_stmt ast.AssignStmt) {
 						g.writeln(');')
 					} else if sym.kind == .map {
 						info := sym.info as table.Map
+						skeytyp := g.typ(info.key_type)
 						styp := g.typ(info.value_type)
 						zero := g.type_default(info.value_type)
 						val_typ := g.table.get_type_symbol(info.value_type)
@@ -1744,7 +1745,7 @@ fn (mut g Gen) gen_assign_stmt(assign_stmt ast.AssignStmt) {
 						} else {
 							g.expr(left.left)
 						}
-						g.write(', &(string[]){')
+						g.write(', &($skeytyp[]){')
 						g.expr(left.index)
 						g.write('}')
 						if val_typ.kind == .function {
@@ -3884,6 +3885,7 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 				}
 			} else if sym.kind == .map {
 				info := sym.info as table.Map
+				key_type_str := g.typ(info.key_type)
 				elem_type_str := g.typ(info.value_type)
 				elem_typ := g.table.get_type_symbol(info.value_type)
 				get_and_set_types := elem_typ.kind in [.struct_, .map]
@@ -3905,7 +3907,7 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 							g.write('.val')
 						}
 					}
-					g.write(', &(string[]){')
+					g.write(', &($key_type_str[]){')
 					g.expr(node.index)
 					g.write('}')
 					if elem_typ.kind == .function {
@@ -3925,7 +3927,7 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 						g.write('&')
 					}
 					g.expr(node.left)
-					g.write(', &(string[]){')
+					g.write(', &($key_type_str[]){')
 					g.expr(node.index)
 					g.write('}, &($elem_type_str[]){ $zero }))')
 				} else {
@@ -3955,7 +3957,7 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 							g.write('.val')
 						}
 					}
-					g.write('), &(string[]){')
+					g.write('), &($key_type_str[]){')
 					g.expr(node.index)
 					g.write('}')
 					if g.is_fn_index_call {