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parser: add check for string casting

pull/3395/head
Swastik Baranwal 2020-01-11 00:29:15 +05:30 committed by Alexander Medvednikov
parent 66a6fa163e
commit 5537b09492
1 changed files with 7 additions and 4 deletions
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11
vlib/compiler/gen_c.v
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@ -277,8 +277,8 @@ fn (table mut Table) fn_gen_name(f &Fn) string {
`%` {
name = name.replace('%', 'op_mod')
}
else {
}}
else {}
}
}
}
if f.is_interface {
@ -600,6 +600,9 @@ fn (p mut Parser) cast(typ string) {
}
// Strings can't be cast
if expr_typ == 'string' {
if is_number_type(typ) || is_float_type(typ) {
p.error('cannot cast `string` to `$typ`, use `${expr_typ}.${typ}()` instead')
}
p.error('cannot cast `$expr_typ` to `$typ`')
}
// Nothing can be cast to bool
@ -671,8 +674,8 @@ fn type_default(typ string) string {
'voidptr' {
return '0'
}
else {
}}
else {}
}
return '{0}'
// TODO this results in
// error: expected a field designator, such as '.field = 4'