Alan Donovan 0725e5a5b3 go.tools/oracle: new query 'referrers' returns all references to an identifier. ... + test. Also: - provide non-nil map to Importer.doImport0() to avoid a crash. - reorganize oracle "needs" bits. - reduce "needs" of 'freevars' and 'implements' queries by avoiding ssa.Packages when types.Package suffices. R=crawshaw CC=golang-dev https://golang.org/cl/13421046		2013-09-10 14:11:42 -04:00
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json.go	go.tools/oracle: new query 'referrers' returns all references to an identifier.	2013-09-10 14:11:42 -04:00