diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2018-01-06 14:46:52 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2018-01-08 12:52:31 +0100 |
| commit | 402a0dc87e7d51812a18fa76feeb46d66efda175 (patch) | |
| tree | 03ae2832257917a68829137b0a504f6f8c2e499a /pkg/ast/format.go | |
| parent | 93b4c6f135aeecbb756fe8c8a3d46c7a05412a54 (diff) | |
sys: support type aliases (aka typedefs)
Complex types that are often repeated can be given short type aliases using the
following syntax:
```
type identifier underlying_type
```
For example:
```
type signalno int32[0:65]
type net_port proc[20000, 4, int16be]
```
Then, type alias can be used instead of the underlying type in any contexts.
Underlying type needs to be described as if it's a struct field, that is,
with the base type if it's required. However, type alias can be used as syscall
arguments as well. Underlying types are currently restricted to integer types,
`ptr`, `ptr64`, `const`, `flags` and `proc` types.
Diffstat (limited to 'pkg/ast/format.go')
| -rw-r--r-- | pkg/ast/format.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pkg/ast/format.go b/pkg/ast/format.go index 0f95d7ebf..a77662df8 100644 --- a/pkg/ast/format.go +++ b/pkg/ast/format.go @@ -62,6 +62,10 @@ func (res *Resource) serialize(w io.Writer) { fmt.Fprintf(w, "\n") } +func (typedef *TypeDef) serialize(w io.Writer) { + fmt.Fprintf(w, "type %v %v\n", typedef.Name.Name, fmtType(typedef.Type)) +} + func (c *Call) serialize(w io.Writer) { fmt.Fprintf(w, "%v(", c.Name.Name) for i, a := range c.Args { |