checker: fix #9330 (#9342)

vlib/v/checker/checker.v

@@ -2626,22 +2626,25 @@ pub fn (mut c Checker) assign_stmt(mut assign_stmt ast.AssignStmt) {
 	right_first := assign_stmt.right[0]
 	mut right_len := assign_stmt.right.len
 	mut right_type0 := table.void_type
-	for right in assign_stmt.right {
+	for i, right in assign_stmt.right {
 		if right is ast.CallExpr || right is ast.IfExpr || right is ast.LockExpr
 			|| right is ast.MatchExpr {
-			right_type0 = c.expr(right)
+			right_type := c.expr(right)
+			if i == 0 {
+				right_type0 = right_type
 				assign_stmt.right_types = [
 					c.check_expr_opt_call(right, right_type0),
 				]
-			right_type_sym0 := c.table.get_type_symbol(right_type0)
+			}
-			if right_type_sym0.kind == .multi_return {
+			right_type_sym := c.table.get_type_symbol(right_type)
+			if right_type_sym.kind == .multi_return {
 				if assign_stmt.right.len > 1 {
-					c.error('cannot use multi-value $right_type_sym0.name in signle-value context',
+					c.error('cannot use multi-value $right_type_sym.name in single-value context',
 						right.position())
 				}
-				assign_stmt.right_types = right_type_sym0.mr_info().types
+				assign_stmt.right_types = right_type_sym.mr_info().types
 				right_len = assign_stmt.right_types.len
-			} else if right_type0 == table.void_type {
+			} else if right_type == table.void_type {
 				right_len = 0
 			}
 		}

vlib/v/checker/tests/assign_multi_mismatch.out

@@ -12,42 +12,42 @@ vlib/v/checker/tests/assign_multi_mismatch.vv:6:3: error: assignment mismatch: 1
       |   ~~
     7 | _, _ := f()
     8 | _, _ := 0, f()
-vlib/v/checker/tests/assign_multi_mismatch.vv:8:12: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:8:12: error: cannot use multi-value (int, int) in single-value context
     6 | _ := f()
     7 | _, _ := f()
     8 | _, _ := 0, f()
       |            ~~~
     9 | _, _ := f(), 0
    10 | _, _, _ := 0, f()
-vlib/v/checker/tests/assign_multi_mismatch.vv:9:9: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:9:9: error: cannot use multi-value (int, int) in single-value context
     7 | _, _ := f()
     8 | _, _ := 0, f()
     9 | _, _ := f(), 0
       |         ~~~
    10 | _, _, _ := 0, f()
    11 | _, _, _ := f(), 0
-vlib/v/checker/tests/assign_multi_mismatch.vv:10:15: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:10:15: error: cannot use multi-value (int, int) in single-value context
     8 | _, _ := 0, f()
     9 | _, _ := f(), 0
    10 | _, _, _ := 0, f()
       |               ~~~
    11 | _, _, _ := f(), 0
    12 | _, _ := f(), f()
-vlib/v/checker/tests/assign_multi_mismatch.vv:11:12: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:11:12: error: cannot use multi-value (int, int) in single-value context
     9 | _, _ := f(), 0
    10 | _, _, _ := 0, f()
    11 | _, _, _ := f(), 0
       |            ~~~
    12 | _, _ := f(), f()
    13 | _, _, _, _ := f(), f()
-vlib/v/checker/tests/assign_multi_mismatch.vv:12:9: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:12:9: error: cannot use multi-value (int, int) in single-value context
    10 | _, _, _ := 0, f()
    11 | _, _, _ := f(), 0
    12 | _, _ := f(), f()
       |         ~~~
    13 | _, _, _, _ := f(), f()
    14 |
-vlib/v/checker/tests/assign_multi_mismatch.vv:13:15: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:13:15: error: cannot use multi-value (int, int) in single-value context
    11 | _, _, _ := f(), 0
    12 | _, _ := f(), f()
    13 | _, _, _, _ := f(), f()
@@ -61,7 +61,7 @@ vlib/v/checker/tests/assign_multi_mismatch.vv:19:3: error: assignment mismatch:
       |   ~~
    20 |     1 { f() }
    21 |     else { f() }
-vlib/v/checker/tests/assign_multi_mismatch.vv:23:12: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:23:12: error: cannot use multi-value (int, int) in single-value context
    21 |     else { f() }
    22 | }
    23 | _, _ := 0, match 4 {
@@ -74,7 +74,7 @@ vlib/v/checker/tests/assign_multi_mismatch.vv:29:3: error: assignment mismatch:
    29 | _ := if true { f() } else { f() }
       |   ~~
    30 | _, _ := 0, if true { f() } else { f() }
-vlib/v/checker/tests/assign_multi_mismatch.vv:30:12: error: cannot use multi-value (int, int) in signle-value context
+vlib/v/checker/tests/assign_multi_mismatch.vv:30:12: error: cannot use multi-value (int, int) in single-value context
    28 | _, _ := 0, if true { 0 } else { 1 }
    29 | _ := if true { f() } else { f() }
    30 | _, _ := 0, if true { f() } else { f() }

vlib/v/tests/complex_assign_test.v

@@ -104,3 +104,20 @@ fn test_assign_multi_expr() {
 	assert s.value == 555
 	assert s.name == 'initial'
 }
+
+fn test_issue_9330() {
+	arr := "0.1".split('.')
+	a0, a1 := arr[0], arr[1].int()
+	assert a0 == '0'
+	assert a1 == 1
+	b0, b1 := arr[0].int(), arr[1]
+	assert b0 == 0
+	assert b1 == '1'
+	c0, c1 := arr[0], arr[1]
+	assert c0 == '0'
+	assert c1 == '1'
+	d0, d1 := arr[0].int(), arr[1].f64()
+	assert d0 == 0
+	assert d1 == 1.0
+
+}