abstract class ContextReporter extends Reporter
A reporter for use during type checking. It has multiple modes for handling errors.
The default (immediate mode) is to send the error to the global reporter. When switched into buffering mode via makeBuffering, errors and warnings are buffered and not be reported (there's a special case for ambiguity errors for some reason: those are force to the reporter when context.ambiguousErrors, or else they are buffered -- TODO: can we simplify this?)
When using the type checker after typers, an error results in a TypeError being thrown. TODO: get rid of this mode.
To handle nested contexts, reporters share buffers. TODO: only buffer in BufferingReporter, emit immediately in ImmediateReporter
- Source
- Contexts.scala
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- ContextReporter
- Reporter
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- Public
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Instance Constructors
- new ContextReporter(_errorBuffer: LinkedHashSet[Analyzer.AbsTypeError] = null, _warningBuffer: LinkedHashSet[(Global.Position, String)] = null)
Type Members
-
class
Severity
extends AnyRef
- Definition Classes
- Reporter
- type Error = Analyzer.AbsTypeError
- type Warning = (Global.Position, String)
Abstract Value Members
-
abstract
def
handleError(pos: Global.Position, msg: String): Unit
- Attributes
- protected
Concrete Value Members
-
object
INFO
extends Severity
- Definition Classes
- Reporter → Reporter
-
object
WARNING
extends Severity
- Definition Classes
- Reporter → Reporter
-
final
def
!=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
- returns
true
if !(this == that), false otherwise.
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
Equivalent to
x.hashCode
except for boxed numeric types andnull
.Equivalent to
x.hashCode
except for boxed numeric types andnull
. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. Fornull
returns a hashcode wherenull.hashCode
throws aNullPointerException
.- returns
a hash value consistent with ==
- Definition Classes
- AnyRef → Any
-
def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to any2stringadd[Analyzer.ContextReporter] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
-
def
->[B](y: B): (Analyzer.ContextReporter, B)
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to ArrowAssoc[Analyzer.ContextReporter] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
-
final
def
==(arg0: Any): Boolean
The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.- returns
true
if the receiver object is equivalent to the argument;false
otherwise.
- Definition Classes
- AnyRef → Any
-
lazy val
ERROR: Severity
- Definition Classes
- Reporter → Reporter
-
def
addDiagString(msg: String)(implicit context: Analyzer.Context): String
- Attributes
- protected
-
final
def
asInstanceOf[T0]: T0
Cast the receiver object to be of type
T0
.Cast the receiver object to be of type
T0
.Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression
1.asInstanceOf[String]
will throw aClassCastException
at runtime, while the expressionList(1).asInstanceOf[List[String]]
will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.- returns
the receiver object.
- Definition Classes
- Any
- Exceptions thrown
ClassCastException
if the receiver object is not an instance of the erasure of typeT0
.
-
var
cancelled: Boolean
- Definition Classes
- Reporter
- final def clearAll(): Unit
- final def clearAllErrors(): Unit
-
def
clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the
clone
method is platform dependent.- returns
a copy of the receiver object.
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
- Note
not specified by SLS as a member of AnyRef
-
def
comment(pos: Position, msg: String): Unit
- Definition Classes
- Reporter
-
def
count(severity: Severity): Int
- Definition Classes
- Reporter → Reporter
-
def
echo(msg: String): Unit
For sending a message which should not be labelled as a warning/error, but also shouldn't require -verbose to be visible.
For sending a message which should not be labelled as a warning/error, but also shouldn't require -verbose to be visible.
- Definition Classes
- Reporter
-
def
echo(pos: Position, msg: String): Unit
- Definition Classes
- Reporter
- final def emitWarnings(): Unit
-
def
ensuring(cond: (Analyzer.ContextReporter) ⇒ Boolean, msg: ⇒ Any): Analyzer.ContextReporter
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to Ensuring[Analyzer.ContextReporter] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: (Analyzer.ContextReporter) ⇒ Boolean): Analyzer.ContextReporter
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to Ensuring[Analyzer.ContextReporter] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): Analyzer.ContextReporter
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to Ensuring[Analyzer.ContextReporter] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): Analyzer.ContextReporter
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to Ensuring[Analyzer.ContextReporter] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
final
def
eq(arg0: AnyRef): Boolean
Tests whether the argument (
that
) is a reference to the receiver object (this
).Tests whether the argument (
that
) is a reference to the receiver object (this
).The
eq
method implements an equivalence relation on non-null instances ofAnyRef
, and has three additional properties:- It is consistent: for any non-null instances
x
andy
of typeAnyRef
, multiple invocations ofx.eq(y)
consistently returnstrue
or consistently returnsfalse
. - For any non-null instance
x
of typeAnyRef
,x.eq(null)
andnull.eq(x)
returnsfalse
. null.eq(null)
returnstrue
.
When overriding the
equals
orhashCode
methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2
), they should be equal to each other (o1 == o2
) and they should hash to the same value (o1.hashCode == o2.hashCode
).- returns
true
if the argument is a reference to the receiver object;false
otherwise.
- Definition Classes
- AnyRef
- It is consistent: for any non-null instances
-
def
equals(arg0: Any): Boolean
The equality method for reference types.
-
def
error(pos: Position, msg: String): Unit
- Definition Classes
- Reporter
-
final
def
errorBuffer: LinkedHashSet[Analyzer.AbsTypeError]
- Attributes
- protected
-
def
errorCount: Int
- Definition Classes
- Reporter
- final def errors: collection.immutable.Seq[Error]
-
def
finalize(): Unit
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the
finalize
method is invoked, as well as the interaction betweenfinalize
and non-local returns and exceptions, are all platform dependent.- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
- Note
not specified by SLS as a member of AnyRef
-
def
finish(): Unit
- Definition Classes
- Reporter
- final def firstError: Option[Analyzer.AbsTypeError]
-
def
flush(): Unit
- Definition Classes
- Reporter
-
def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to StringFormat[Analyzer.ContextReporter] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
-
final
def
getClass(): Class[_]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
- returns
a class object corresponding to the runtime type of the receiver.
- Definition Classes
- AnyRef → Any
-
def
handleSuppressedAmbiguous(err: Analyzer.AbsAmbiguousTypeError): Unit
- Attributes
- protected
-
def
handleWarning(pos: Global.Position, msg: String): Unit
- Attributes
- protected
-
final
def
hasErrors: Boolean
- Definition Classes
- ContextReporter → Reporter → Reporter
-
def
hasWarnings: Boolean
- Definition Classes
- Reporter
-
def
hashCode(): Int
The hashCode method for reference types.
-
final
def
info(pos: Position, msg: String, force: Boolean): Unit
Informational messages.
Informational messages. If
!force
, they may be suppressed.- Definition Classes
- Reporter
-
final
def
info0(pos: Global.Position, msg: String, severity: Severity, force: Boolean): Unit
- Attributes
- protected
- Definition Classes
- ContextReporter → Reporter
- def isBuffering: Boolean
-
final
def
isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object is
T0
.Test whether the dynamic type of the receiver object is
T0
.Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression
1.isInstanceOf[String]
will returnfalse
, while the expressionList(1).isInstanceOf[List[String]]
will returntrue
. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.- returns
true
if the receiver object is an instance of erasure of typeT0
;false
otherwise.
- Definition Classes
- Any
- def isThrowing: Boolean
- def issue(err: Analyzer.AbsTypeError)(implicit context: Analyzer.Context): Unit
-
final
def
issueAmbiguousError(err: Analyzer.AbsAmbiguousTypeError)(implicit context: Analyzer.Context): Unit
Emit an ambiguous error according to context.ambiguousErrors
Emit an ambiguous error according to context.ambiguousErrors
- when true, use global.reporter regardless of whether we're buffering (TODO: can we change this?)
- else, let this context reporter decide
- def makeBuffering: Analyzer.ContextReporter
- def makeImmediate: Analyzer.ContextReporter
-
final
def
ne(arg0: AnyRef): Boolean
Equivalent to
!(this eq that)
.Equivalent to
!(this eq that)
.- returns
true
if the argument is not a reference to the receiver object;false
otherwise.
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
- Definition Classes
- AnyRef
- Note
not specified by SLS as a member of AnyRef
-
final
def
notifyAll(): Unit
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
- Definition Classes
- AnyRef
- Note
not specified by SLS as a member of AnyRef
- def propagateImplicitTypeErrorsTo(target: Analyzer.ContextReporter): Unit
-
final
def
propagatingErrorsTo[T](target: Analyzer.ContextReporter)(expr: ⇒ T): T
- Annotations
- @inline()
- def reportFirstDivergentError(fun: Global.Tree, param: Global.Symbol, paramTp: Global.Type)(implicit context: Analyzer.Context): Unit
-
def
reset(): Unit
- Definition Classes
- Reporter → Reporter
-
def
resetCount(severity: Severity): Unit
- Definition Classes
- Reporter → Reporter
- def retainDivergentErrorsExcept(saved: Analyzer.DivergentImplicitTypeError): Unit
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toString(): String
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
- returns
a String representation of the object.
- Definition Classes
- AnyRef → Any
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
def
warning(pos: Position, msg: String): Unit
- Definition Classes
- Reporter
-
final
def
warningBuffer: LinkedHashSet[(Global.Position, String)]
- Attributes
- protected
-
def
warningCount: Int
- Definition Classes
- Reporter
- final def warnings: collection.immutable.Seq[Warning]
-
final
def
withFreshErrorBuffer[T](expr: ⇒ T): T
- Annotations
- @inline()
-
def
→[B](y: B): (Analyzer.ContextReporter, B)
- Implicit
- This member is added by an implicit conversion from Analyzer.ContextReporter to ArrowAssoc[Analyzer.ContextReporter] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
The Scala compiler API.
The following resources are useful for Scala plugin/compiler development: