checker: check array builtin method's arguments (#14119)
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8013bd43b0
commit
f13583b04a
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@ -1884,6 +1884,9 @@ fn (mut c Checker) array_builtin_method_call(mut node ast.CallExpr, left_type as
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c.check_map_and_filter(false, elem_typ, node)
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node.return_type = ast.bool_type
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} else if method_name == 'clone' {
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if node.args.len != 0 {
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c.error('`.clone()` does not have any arguments', node.args[0].pos)
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}
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// need to return `array_xxx` instead of `array`
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// in ['clone', 'str'] {
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node.receiver_type = left_type.ref()
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@ -1914,6 +1917,9 @@ fn (mut c Checker) array_builtin_method_call(mut node ast.CallExpr, left_type as
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} else if method_name == 'index' {
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node.return_type = ast.int_type
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} else if method_name in ['first', 'last', 'pop'] {
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if node.args.len != 0 {
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c.error('`.${method_name}()` does not have any arguments', node.args[0].pos)
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}
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node.return_type = array_info.elem_type
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if method_name == 'pop' {
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c.fail_if_immutable(node.left)
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@ -0,0 +1,28 @@
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vlib/v/checker/tests/array_builtin_method_args_err.vv:4:18: error: `.clone()` does not have any arguments
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2 | arr := [1, 2, 3]
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3 |
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4 | a1 := arr.clone(22)
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| ~~
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5 | println(a1)
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6 |
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vlib/v/checker/tests/array_builtin_method_args_err.vv:7:18: error: `.first()` does not have any arguments
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5 | println(a1)
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6 |
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7 | a2 := arr.first('a2')
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| ~~~~
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8 | println(a2)
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9 |
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vlib/v/checker/tests/array_builtin_method_args_err.vv:10:17: error: `.last()` does not have any arguments
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8 | println(a2)
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9 |
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10 | a3 := arr.last(1)
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| ^
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11 | println(a3)
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12 |
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vlib/v/checker/tests/array_builtin_method_args_err.vv:13:16: error: `.pop()` does not have any arguments
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11 | println(a3)
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12 |
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13 | a4 := arr.pop(2)
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| ^
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14 | println(a4)
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15 | }
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@ -0,0 +1,15 @@
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fn main() {
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arr := [1, 2, 3]
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a1 := arr.clone(22)
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println(a1)
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a2 := arr.first('a2')
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println(a2)
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a3 := arr.last(1)
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println(a3)
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a4 := arr.pop(2)
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println(a4)
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}
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