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commit
3ae59a7837
@ -2508,7 +2508,8 @@ pub fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
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&& final_to_sym.kind !in [.sum_type, .interface_] {
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ft := c.table.type_to_str(from_type)
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tt := c.table.type_to_str(to_type)
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c.error('cannot cast `$ft` to `$tt`, please use `as` instead, e.g. `expr as Ident`',
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kind_name := if from_sym.kind == .sum_type { 'sum type' } else { 'interface' }
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c.error('cannot cast `$ft` $kind_name value to `$tt`, use `$node.expr as $tt` instead',
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node.pos)
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}
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@ -1,6 +1,13 @@
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vlib/v/checker/tests/cast_sumtype_err.vv:7:14: error: cannot cast `Test` to `int`, please use `as` instead, e.g. `expr as Ident`
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5 | fn main() {
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6 | data := Test(12)
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7 | eprintln(int(data))
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vlib/v/checker/tests/cast_sumtype_err.vv:8:11: error: cannot cast `Test` sum type value to `int`, use `data as int` instead
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6 | fn main() {
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7 | data := Test(12)
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8 | eprintln(int(data))
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| ~~~~~~~~~
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8 | }
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9 |
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10 | foo := Bar('123.45')
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vlib/v/checker/tests/cast_sumtype_err.vv:11:10: error: cannot cast `Bar` sum type value to `f32`, use `foo as f32` instead
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9 |
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10 | foo := Bar('123.45')
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11 | println(f32(foo))
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| ~~~~~~~~
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12 | }
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@ -1,8 +1,12 @@
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module main
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type Test = int | u32 | f32
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type Bar = int | string
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fn main() {
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data := Test(12)
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eprintln(int(data))
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foo := Bar('123.45')
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println(f32(foo))
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}
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