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compiler: add error when embedding struct in itself

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joe-conigliaro 2019-09-30 20:41:11 +10:00 committed by Alexander Medvednikov
parent a5b4ed2909
commit 5fb3c0e3a8
1 changed files with 4 additions and 0 deletions
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4
compiler/parser.v
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@ -722,6 +722,7 @@ fn (p mut Parser) struct_decl() {
// p.next() // p.next()
// } // }
// Check if reserved name // Check if reserved name
field_name_token_idx := p.cur_tok_index()
field_name := if name != 'Option' { p.table.var_cgen_name(p.check_name()) } else { p.check_name() } field_name := if name != 'Option' { p.table.var_cgen_name(p.check_name()) } else { p.check_name() }
// Check dups // Check dups
if field_name in names { if field_name in names {
@ -744,6 +745,9 @@ fn (p mut Parser) struct_decl() {
access_mod := if is_pub{AccessMod.public} else { AccessMod.private} access_mod := if is_pub{AccessMod.public} else { AccessMod.private}
p.fgen(' ') p.fgen(' ')
field_type := p.get_type() field_type := p.get_type()
if field_type == name {
p.error_with_token_index( 'cannot embed struct `$name` in itself (field `$field_name`)', field_name_token_idx)
}
p.check_and_register_used_imported_type(field_type) p.check_and_register_used_imported_type(field_type)
is_atomic := p.tok == .key_atomic is_atomic := p.tok == .key_atomic
if is_atomic { if is_atomic {