Merge pull request #83 from ucan-wg/feat/invocation-witharguments

feat(invocation): add WithArguments Option to set all arguments at once

token/invocation/options.go

@@ -6,6 +6,7 @@ import (
 	"github.com/ipfs/go-cid"
 
 	"github.com/ucan-wg/go-ucan/did"
+	"github.com/ucan-wg/go-ucan/pkg/args"
 )
 
 // Option is a type that allows optional fields to be set during the
@@ -19,6 +20,22 @@ func WithArgument(key string, val any) Option {
 	}
 }
 
+// WithArguments merges the provided arguments into the Token's existing
+// arguments.
+//
+// If duplicate keys are encountered, the new value is silently dropped
+// without causing an error.  Since duplicate keys can only be encountered
+// due to previous calls to WithArgument or WithArguments, calling only
+// this function to set the Token's arguments is equivalent to assigning
+// the arguments to the Token.
+func WithArguments(args *args.Args) Option {
+	return func(t *Token) error {
+		t.arguments.Include(args)
+
+		return nil
+	}
+}
+
 // WithAudience sets the Token's audience to the provided did.DID.
 //
 // If the provided did.DID is the same as the Token's subject, the