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package os2
import "core:io"
import "base:runtime"
General_Error :: enum u32 {
None,
Permission_Denied,
Exist,
Not_Exist,
Closed,
Timeout,
Broken_Pipe,
// Indicates that an attempt to retrieve a file's size was made, but the
// file doesn't have a size.
No_Size,
Invalid_File,
Invalid_Dir,
Invalid_Path,
Pattern_Has_Separator,
Unsupported,
}
Platform_Error :: enum i32 {None=0}
Error :: union #shared_nil {
General_Error,
io.Error,
runtime.Allocator_Error,
Platform_Error,
}
#assert(size_of(Error) == size_of(u64))
is_platform_error :: proc(ferr: Error) -> (err: i32, ok: bool) {
v := ferr.(Platform_Error) or_else {}
return i32(v), i32(v) != 0
}
error_string :: proc(ferr: Error) -> string {
if ferr == nil {
return ""
}
switch e in ferr {
case General_Error:
switch e {
case .None: return ""
case .Permission_Denied: return "permission denied"
case .Exist: return "file already exists"
case .Not_Exist: return "file does not exist"
case .Closed: return "file already closed"
case .Timeout: return "i/o timeout"
case .Broken_Pipe: return "Broken pipe"
case .No_Size: return "file has no definite size"
case .Invalid_File: return "invalid file"
case .Invalid_Dir: return "invalid directory"
case .Invalid_Path: return "invalid path"
case .Unsupported: return "unsupported"
case .Pattern_Has_Separator: return "pattern has separator"
}
case io.Error:
switch e {
case .None: return ""
case .EOF: return "eof"
case .Unexpected_EOF: return "unexpected eof"
case .Short_Write: return "short write"
case .Invalid_Write: return "invalid write result"
case .Short_Buffer: return "short buffer"
case .No_Progress: return "multiple read calls return no data or error"
case .Invalid_Whence: return "invalid whence"
case .Invalid_Offset: return "invalid offset"
case .Invalid_Unread: return "invalid unread"
case .Negative_Read: return "negative read"
case .Negative_Write: return "negative write"
case .Negative_Count: return "negative count"
case .Buffer_Full: return "buffer full"
case .Unknown, .Empty: //
}
case runtime.Allocator_Error:
switch e {
case .None: return ""
case .Out_Of_Memory: return "out of memory"
case .Invalid_Pointer: return "invalid allocator pointer"
case .Invalid_Argument: return "invalid allocator argument"
case .Mode_Not_Implemented: return "allocator mode not implemented"
}
case Platform_Error:
return _error_string(i32(e))
}
return "unknown error"
}
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