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package dotty.tools
package dotc
import core._
import Contexts._
import Periods._
import Symbols._
import Scopes._
import typer.{FrontEnd, Typer, Mode, ImportInfo}
import reporting.ConsoleReporter
import dotty.tools.dotc.core.Phases.Phase
import dotty.tools.dotc.transform._
import dotty.tools.dotc.transform.TreeTransforms.{TreeTransform, TreeTransformer}
import dotty.tools.dotc.transform.PostTyperTransformers.PostTyperTransformer
import dotty.tools.dotc.core.DenotTransformers.DenotTransformer
import dotty.tools.dotc.core.Denotations.SingleDenotation
class Compiler {
def phases: List[List[Phase]] =
List(
List(new FrontEnd),
List(new LazyValsCreateCompanionObjects, new TailRec), //force separataion between lazyVals and LVCreateCO
List(new PatternMatcher, new LazyValTranformContext().transformer,
new Splitter, new TypeTestsCasts, new InterceptedMethods),
List(new Erasure),
List(new UncurryTreeTransform)
)
var runId = 1
def nextRunId = {
runId += 1; runId
}
/** Produces the following contexts, from outermost to innermost
*
* bootStrap: A context with next available runId and a scope consisting of
* the RootPackage _root_
* start A context with RootClass as owner and the necessary initializations
* for type checking.
* imports For each element of RootImports, an import context
*/
def rootContext(implicit ctx: Context): Context = {
ctx.definitions.init(ctx)
ctx.usePhases(phases)
val rootScope = new MutableScope
val bootstrap = ctx.fresh
.setPeriod(Period(nextRunId, FirstPhaseId))
.setScope(rootScope)
rootScope.enter(ctx.definitions.RootPackage)(bootstrap)
val start = bootstrap.fresh
.setOwner(defn.RootClass)
.setTyper(new Typer)
.setMode(Mode.ImplicitsEnabled)
.setTyperState(new MutableTyperState(ctx.typerState, new ConsoleReporter()(ctx), isCommittable = true))
ctx.definitions.init(start) // set context of definitions to start
def addImport(ctx: Context, sym: Symbol) =
ctx.fresh.setImportInfo(ImportInfo.rootImport(sym)(ctx))
(start.setRunInfo(new RunInfo(start)) /: defn.RootImports)(addImport)
}
def newRun(implicit ctx: Context): Run = {
try new Run(this)(rootContext)
finally {
ctx.base.reset()
ctx.runInfo.clear()
}
}
}
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