[IDE] Decouple ExprContextAnalyzer and ExprContextInfo
[IDE] Decouple ExprContextAnalyzer and ExprContextInfo

Just refactoring.
ExprContextInfo automatically construct analyzer and analyze().

karwa/swift,shahmishal/swift,aschwaighofer/swift,glessard/swift,jckarter/swift,roambotics/swift,amraboelela/swift,amraboelela/swift,shahmishal/swift,xedin/swift,lorentey/swift,practicalswift/swift,devincoughlin/swift,allevato/swift,amraboelela/swift,xedin/swift,JGiola/swift,JGiola/swift,practicalswift/swift,rudkx/swift,shahmishal/swift,karwa/swift,apple/swift,practicalswift/swift,airspeedswift/swift,gribozavr/swift,jmgc/swift,nathawes/swift,ahoppen/swift,stephentyrone/swift,harlanhaskins/swift,parkera/swift,nathawes/swift,rudkx/swift,karwa/swift,aschwaighofer/swift,practicalswift/swift,stephentyrone/swift,sschiau/swift,harlanhaskins/swift,gribozavr/swift,lorentey/swift,rudkx/swift,xedin/swift,xwu/swift,karwa/swift,aschwaighofer/swift,benlangmuir/swift,gregomni/swift,lorentey/swift,tkremenek/swift,allevato/swift,aschwaighofer/swift,jckarter/swift,amraboelela/swift,parkera/swift,harlanhaskins/swift,xedin/swift,benlangmuir/swift,rudkx/swift,gribozavr/swift,roambotics/swift,stephentyrone/swift,devincoughlin/swift,airspeedswift/swift,shajrawi/swift,atrick/swift,jckarter/swift,benlangmuir/swift,allevato/swift,allevato/swift,tkremenek/swift,atrick/swift,jckarter/swift,shahmishal/swift,stephentyrone/swift,glessard/swift,practicalswift/swift,gribozavr/swift,CodaFi/swift,airspeedswift/swift,aschwaighofer/swift,xwu/swift,gribozavr/swift,apple/swift,tkremenek/swift,karwa/swift,jmgc/swift,lorentey/swift,atrick/swift,shahmishal/swift,roambotics/swift,karwa/swift,glessard/swift,jmgc/swift,apple/swift,sschiau/swift,practicalswift/swift,CodaFi/swift,xwu/swift,apple/swift,xedin/swift,allevato/swift,gribozavr/swift,lorentey/swift,karwa/swift,devincoughlin/swift,shajrawi/swift,harlanhaskins/swift,hooman/swift,parkera/swift,jmgc/swift,jmgc/swift,glessard/swift,ahoppen/swift,harlanhaskins/swift,xedin/swift,allevato/swift,benlangmuir/swift,benlangmuir/swift,hooman/swift,nathawes/swift,jckarter/swift,hooman/swift,gregomni/swift,sschiau/swift,rudkx/swift,practicalswift/swift,sschiau/swift,shajrawi/swift,apple/swift,airspeedswift/swift,CodaFi/swift,airspeedswift/swift,shajrawi/swift,benlangmuir/swift,allevato/swift,amraboelela/swift,sschiau/swift,shahmishal/swift,devincoughlin/swift,gribozavr/swift,jmgc/swift,tkremenek/swift,shajrawi/swift,atrick/swift,xwu/swift,CodaFi/swift,hooman/swift,ahoppen/swift,ahoppen/swift,stephentyrone/swift,stephentyrone/swift,CodaFi/swift,shajrawi/swift,xwu/swift,shahmishal/swift,hooman/swift,harlanhaskins/swift,xedin/swift,parkera/swift,jckarter/swift,gregomni/swift,ahoppen/swift,sschiau/swift,ahoppen/swift,parkera/swift,lorentey/swift,tkremenek/swift,nathawes/swift,devincoughlin/swift,shajrawi/swift,apple/swift,harlanhaskins/swift,CodaFi/swift,gregomni/swift,xwu/swift,devincoughlin/swift,aschwaighofer/swift,nathawes/swift,glessard/swift,xwu/swift,JGiola/swift,lorentey/swift,tkremenek/swift,gribozavr/swift,gregomni/swift,shahmishal/swift,devincoughlin/swift,devincoughlin/swift,nathawes/swift,hooman/swift,glessard/swift,sschiau/swift,amraboelela/swift,lorentey/swift,nathawes/swift,jmgc/swift,gregomni/swift,JGiola/swift,rudkx/swift,karwa/swift,JGiola/swift,atrick/swift,parkera/swift,roambotics/swift,airspeedswift/swift,amraboelela/swift,roambotics/swift,shajrawi/swift,stephentyrone/swift,CodaFi/swift,parkera/swift,jckarter/swift,atrick/swift,xedin/swift,tkremenek/swift,parkera/swift,JGiola/swift,roambotics/swift,aschwaighofer/swift,airspeedswift/swift,sschiau/swift,practicalswift/swift,hooman/swift