GDScript: Fix typing of iterator in for loop

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_constant_float.gd

@@ -0,0 +1,6 @@
+const constant_float = 1.0
+
+func test():
+	for x in constant_float:
+		if x is String:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_constant_float.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "float" so it can't be of type "String".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_constant_int.gd

@@ -0,0 +1,6 @@
+const constant_int = 1
+
+func test():
+	for x in constant_int:
+		if x is String:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_constant_int.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "int" so it can't be of type "String".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_enum_value.gd

@@ -0,0 +1,6 @@
+enum { enum_value = 1 }
+
+func test():
+	for x in enum_value:
+		if x is String:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_enum_value.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "int" so it can't be of type "String".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_float.gd

@@ -0,0 +1,6 @@
+func test():
+	var hard_float := 1.0
+
+	for x in hard_float:
+		if x is String:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_float.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "float" so it can't be of type "String".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_int.gd

@@ -0,0 +1,6 @@
+func test():
+	var hard_int := 1
+
+	for x in hard_int:
+		if x is String:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_int.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "int" so it can't be of type "String".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_iterator.gd

@@ -0,0 +1,14 @@
+class Iterator:
+	func _iter_init(_count):
+		return true
+	func _iter_next(_count):
+		return false
+	func _iter_get(_count) -> StringName:
+		return &'custom'
+
+func test():
+	var hard_iterator := Iterator.new()
+
+	for x in hard_iterator:
+		if x is int:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_iterator.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "StringName" so it can't be of type "int".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_string.gd

@@ -0,0 +1,6 @@
+func test():
+	var hard_string := 'a'
+
+	for x in hard_string:
+		if x is int:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_hard_string.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "String" so it can't be of type "int".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_literal_bool.gd

@@ -0,0 +1,3 @@
+func test():
+	for x in true:
+		pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_literal_bool.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Unable to iterate on value of type "bool".

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_literal_int.gd

@@ -0,0 +1,4 @@
+func test():
+	for x in 1:
+		if x is String:
+			pass

modules/gdscript/tests/scripts/analyzer/errors/for_loop_on_literal_int.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Expression is of type "int" so it can't be of type "String".