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Martin Atkins 545980d664 langrefs: Separate package for expression reference analysis ... Finding references in an expression is a static analysis operation, but we previously had it grouped in with "package lang" that primarily deals with dynamic evaluation of expressions. We need to do static analysis in far more locations than we do full expression evaluation, the static-analysis-only callers don't need anything else from package lang, and the reference-analysis functions are self-contained little wrappers around the address parsing logic in package addrs anyway. Splitting these into a separate package therefore minimizes which packages depend indirectly on package lang, and thus which packages depend indirectly on the implementations of the built-in functions. Some of the built-in functions rely on dependencies we don't use anywhere else, so cutting these out shrinks how many packages indirectly depend on those external dependencies. In particular, they are no longer in the indirect import chain for the "legacy" module.		2 years ago
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references.go	…