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compiler: functions with multiple returns

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This commit is contained in:
joe-conigliaro
2019-09-23 12:45:19 +10:00
committed by Alexander Medvednikov
parent a0c5113611
commit 60d932e57d
3 changed files with 106 additions and 25 deletions
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16
compiler/fn.v
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@@ -279,12 +279,26 @@ fn (p mut Parser) fn_decl() {
// Returns a type?
mut typ := 'void'
if p.tok == .name || p.tok == .mul || p.tok == .amp || p.tok == .lsbr ||
p.tok == .question {
p.tok == .question || p.tok == .lpar {
p.fgen(' ')
// TODO In
// if p.tok in [ .name, .mul, .amp, .lsbr ] {
typ = p.get_type()
}
// multiple returns
if typ.starts_with('MultiReturn_') {
if !p.first_pass() && !p.table.known_type(typ) {
p.table.register_type2(Type{
cat: TypeCategory.struct_,
name: typ,
mod: p.mod
})
for i, t in typ.replace('MultiReturn_', '').replace('0ptr0', '*').split('_') {
p.table.add_field(typ, 'var_$i', t, false, '', .public)
}
p.cgen.typedefs << 'typedef struct $typ $typ;'
}
}
// Translated C code can have empty functions (just definitions)
is_fn_header := !is_c && !is_sig && (p.pref.translated || p.pref.is_test) && p.tok != .lcbr
if is_fn_header {