class TreeChecker
extends DotClass with Phase with SymTransformer

Run by -Ycheck option after a given phase, this class retypes all syntax trees and verifies that the type of each tree node so obtained conforms to the type found in the tree node. It also performs the following checks:

  • The owner of each definition is the same as the owner of the current typing context.
  • Ident nodes do not refer to a denotation that would need a select to be accessible (see tpd.needsSelect).
  • After typer, identifiers and select nodes refer to terms only (all types should be represented as TypeTrees then).

Constructors

TreeChecker ( )

Members

class Checker
val NoSuperClass : FlagSet
private val seenClasses : HashMap [ String, Symbol ]
private val seenModuleVals : HashMap [ String, Symbol ]
def check ( phasesToRun: Seq [ Phase ] , ctx: Context ) : Tree
def checkCompanion ( symd: SymDenotation ) ( implicit ctx: Context ) : Unit
def isValidJVMMethodName ( name: Name ) : Boolean
def isValidJVMName ( name: Name ) : Boolean
[+] def phaseName : String

A name given to the Phase that can be used to debug the compiler. For instance, it is possible to print trees after a given phase using:

A name given to the Phase that can be used to debug the compiler. For instance, it is possible to print trees after a given phase using:

$ ./bin/dotc -Xprint:<phaseNameHere> sourceFile.scala
private def previousPhases ( phases: List [ Phase ] ) ( implicit ctx: Context ) : List [ Phase ]
def printError ( str: String ) ( implicit ctx: Context ) : Unit
def run ( implicit ctx: Context ) : Unit
def testDuplicate ( sym: Symbol , registry: Map [ String, Symbol ] , typ: String ) ( implicit ctx: Context ) : Unit
def transformSym ( symd: SymDenotation ) ( implicit ctx: Context ) : SymDenotation