fff054ea17
When using this package, `ucan.Token` reads better than `ucan.UCAN` to me. Encourages the reader to think in terms of "tokens", from the "ucan" package. Performed this refactoring with a few commands (and a few comment edits): $ gofmt -r 'UCAN -> Token' -w . $ gofmt -r 'NewAttenuatedUCAN -> NewAttenuatedToken' -w . $ gofmt -r 'NewOriginUCAN -> NewOriginToken' -w . $ gofmt -r 'UCANParser -> TokenParser' -w . $ gofmt -r 'NewUCANParser -> NewTokenParser' -w . $ gofmt -r 'UCANCtxKey -> TokenCtxKey' -w . Changed example test "ExampleWalkthrough" to "Example" to make go vet happy BREAKING CHANGE: UCAN symbol is now "Token"
28 lines
642 B
Go
28 lines
642 B
Go
package ucan
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import (
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"context"
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)
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// CtxKey defines a distinct type for context keys used by the access
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// package
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type CtxKey string
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// TokenCtxKey is the key for adding an access UCAN to a context.Context
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const TokenCtxKey CtxKey = "UCAN"
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// CtxWithToken adds a UCAN value to a context
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func CtxWithToken(ctx context.Context, t Token) context.Context {
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return context.WithValue(ctx, TokenCtxKey, t)
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}
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// FromCtx extracts a token from a given context if one is set, returning nil
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// otherwise
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func FromCtx(ctx context.Context) *Token {
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iface := ctx.Value(TokenCtxKey)
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if ref, ok := iface.(*Token); ok {
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return ref
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}
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return nil
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}
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