AST cleanup: simplify initialization contexts #4603
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… in a pattern binding decl.
…-local scopes. We were optimizing away unused pattern binding initializer contexts in both the parser and in semantic analysis, which led to a somewhat-unpredictable set of DeclContexts in the AST. Normalize everything by always creating these contexts.
ExprHandle is a relic from a horrible time when expressions made their way into the type system via default arguments. It's been unnecessary for a long time, so get rid of it.
…ault argument. As with pattern binding initializer contexts, we were trying to optimize away these contexts, leading to an unpredictable AST.
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@swift-ci please smoke test and merge |
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Yay! ExprHandle is dead! |
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Simplify various parts of the AST's handling of initialization contexts. Should be NFC.
Addresses rdar://problem/28142028.