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parser: allow embedding interfaces from other modules (#13385)

This commit is contained in:
Vincenzo Palazzo 2022-02-06 23:20:34 +01:00 committed by GitHub
parent 1dc239227d
commit 10dcb2e0d9
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3 changed files with 44 additions and 0 deletions

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@ -519,6 +519,32 @@ fn (mut p Parser) interface_decl() ast.InterfaceDecl {
}
continue
}
// Check embedded interface from external module
if p.tok.kind == .name && p.peek_tok.kind == .dot {
if p.tok.lit !in p.imports {
p.error_with_pos('mod `$p.tok.lit` not imported', p.tok.pos())
break
}
mod_name := p.tok.lit
from_mod_typ := p.parse_type()
from_mod_name := '${mod_name}.$p.prev_tok.lit'
if from_mod_name.is_lower() {
p.error_with_pos('The interface name need to have the pascal case', p.prev_tok.pos())
break
}
comments := p.eat_comments()
ifaces << ast.InterfaceEmbedding{
name: from_mod_name
typ: from_mod_typ
pos: p.prev_tok.pos()
comments: comments
}
if p.tok.kind == .rcbr {
break
}
}
if p.tok.kind == .key_mut {
if is_mut {
p.error_with_pos('redefinition of `mut` section', p.tok.pos())

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@ -0,0 +1,15 @@
module main
import interface_from_another_module.mod
interface IBar {
mod.IFoo
}
struct Abc {}
fn test_interface() {
a := IBar(Abc{})
dump(a)
assert true
}

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@ -0,0 +1,3 @@
module mod
pub interface IFoo {}