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checker: check error for arguments of array.contains() (#14102)

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yuyi
2022-04-20 16:00:59 +08:00
committed by GitHub
parent 711e90cf99
commit 8cc79e4299
3 changed files with 55 additions and 0 deletions
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11
vlib/v/checker/fn.v
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@@ -1893,6 +1893,17 @@ fn (mut c Checker) array_builtin_method_call(mut node ast.CallExpr, left_type as
node.return_type = ast.void_type node.return_type = ast.void_type
} else if method_name == 'contains' { } else if method_name == 'contains' {
// c.warn('use `value in arr` instead of `arr.contains(value)`', node.pos) // c.warn('use `value in arr` instead of `arr.contains(value)`', node.pos)
if node.args.len != 1 {
c.error('`.contains()` expected 1 argument, but got $node.args.len', node.pos)
} else {
arg_typ := ast.mktyp(c.expr(node.args[0].expr))
elem_typ_str := c.table.type_to_str(elem_typ)
arg_typ_str := c.table.type_to_str(arg_typ)
if !left_sym.has_method('contains') && elem_typ_str != arg_typ_str {
c.error('`.contains()` expected `$elem_typ_str` argument, but got `$arg_typ_str`',
node.pos)
}
}
node.return_type = ast.bool_type node.return_type = ast.bool_type
} else if method_name == 'index' { } else if method_name == 'index' {
node.return_type = ast.int_type node.return_type = ast.int_type

35
vlib/v/checker/tests/array_contains_args_err.out Normal file
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@@ -0,0 +1,35 @@
vlib/v/checker/tests/array_contains_args_err.vv:3:17: error: `.contains()` expected `int` argument, but got `[]int`
1 | fn main() {
2 | arr := [0]
3 | mut ret := [0].contains([0])
| ~~~~~~~~~~~~~
4 | ret = [0].contains()
5 | ret = [0, 1, 2].contains(0, 1, 2)
vlib/v/checker/tests/array_contains_args_err.vv:4:12: error: `.contains()` expected 1 argument, but got 0
2 | arr := [0]
3 | mut ret := [0].contains([0])
4 | ret = [0].contains()
| ~~~~~~~~~~
5 | ret = [0, 1, 2].contains(0, 1, 2)
6 | ret = [0].contains('a')
vlib/v/checker/tests/array_contains_args_err.vv:5:18: error: `.contains()` expected 1 argument, but got 3
3 | mut ret := [0].contains([0])
4 | ret = [0].contains()
5 | ret = [0, 1, 2].contains(0, 1, 2)
| ~~~~~~~~~~~~~~~~~
6 | ret = [0].contains('a')
7 | ret = [0].contains(arr)
vlib/v/checker/tests/array_contains_args_err.vv:6:12: error: `.contains()` expected `int` argument, but got `string`
4 | ret = [0].contains()
5 | ret = [0, 1, 2].contains(0, 1, 2)
6 | ret = [0].contains('a')
| ~~~~~~~~~~~~~
7 | ret = [0].contains(arr)
8 | println(ret)
vlib/v/checker/tests/array_contains_args_err.vv:7:12: error: `.contains()` expected `int` argument, but got `[]int`
5 | ret = [0, 1, 2].contains(0, 1, 2)
6 | ret = [0].contains('a')
7 | ret = [0].contains(arr)
| ~~~~~~~~~~~~~
8 | println(ret)
9 | }

9
vlib/v/checker/tests/array_contains_args_err.vv Normal file
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@@ -0,0 +1,9 @@
fn main() {
arr := [0]
mut ret := [0].contains([0])
ret = [0].contains()
ret = [0, 1, 2].contains(0, 1, 2)
ret = [0].contains('a')
ret = [0].contains(arr)
println(ret)
}