shabbyrobe/msgpgen

Unmaintained. Alternative code generation wrapper for tinylib/msgp

msgpgen - Alternative code generator wrapper for msgp

Note: This badly needed a lick of paint before Go Modules came onto the scene, and should now be considered obsolete/unmaintained. Having said that, if you depend on this and you run into trouble with it, please open an issue and I'll see if I can help.

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msgpgen combines tinylib/msgp with shabbyrobe/structer to solve a few issues with the code generating portion of tinylib/msgp.

It supports:

• All the same arguments as the old generator

It differs:

• ignore and shim directives must be declared using the full package path.

It adds:

• Support for non-local identifiers, by simply generating the code for those identifiers in the relevant package.
• Automatic shimming of primitives
• Automatic handling of interface types
• Silencing spurious warnings
• Alternative methods of searching for types, including using a flat file containing a whitelist, or searching for all types that implement an interface.

It has the following issues (which should all be fixed at some point):

• Import recursion is not limited. msgpgen will blindly traverse any user package it finds in your gopath and will generate code into it.
• Ignored fields (with the tag msg:"-") produce a warning in the output which is not currently quashed.

We may be able to support:

• #163 Embedded fields behaviour

It solves the following issues in the msgp tracker:

• #183 Generator output severity labels
• #158 Workaround for types that are defined in another package?
• #141 Directive ignore all
• #128 Best effort warnings re: external types
• #47 Keep track of imports (boy does it ever do that)

Using

To generate msgpack for all types in and under mypkg that implement interface mypkg.Msg, then recursively generate all types in other packages in your GOPATH that those types reference, use the following:

//go:generate msgpgen -iface mypkg.Msg -import mypkg/...

Warning

The recursion is not currenty limited by the -import flag, though it will be.