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interface fix

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This commit is contained in:
Alexander Medvednikov
2020-01-09 01:39:47 +01:00
parent c1cc203c17
commit 29564ed63d
7 changed files with 61 additions and 53 deletions
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9
vlib/compiler/expression.v
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@@ -50,6 +50,15 @@ fn (p mut Parser) bool_expression() string {
if p.inside_return_expr && p.expected_type.contains('_MulRet_') { //is_ret { // return a,b hack TODO
expected = p.expected_type
}
// `window.widget = button`, widget is an interface
if expected != typ && expected.ends_with('er') && expected.contains('I') {
tt := typ.replace('*', '_ptr')
p.cgen.set_placeholder(start_ph,
'($expected) { ._interface_idx = _${expected}_${tt}_index, ._object = ' )
p.gen('}')
//p.satisfies_interface(expected, typ, true)
}
// e.g. `return BinaryExpr{}` in a function expecting `Expr`
if expected != typ && expected in p.table.sum_types { // TODO perf
//p.warn('SUM CAST exp=$expected typ=$typ p.exp=$p.expected_type')
T := p.table.find_type(typ)