Class

xsbt

ExtractUsedNames

Related Doc: package xsbt

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class ExtractUsedNames[GlobalType <: CallbackGlobal] extends Compat with ClassName with GlobalHelpers

Extracts simple names used in given compilation unit.

Extracts simple (unqualified) names mentioned in given in non-definition position by collecting all symbols associated with non-definition trees and extracting names from all collected symbols. Also extract the names of the types of non-definition trees (see source-dependencies/types-in-used-names-* and source-dependencies/as-seen-from-* for examples where this is required).

If given symbol is mentioned both in definition and in non-definition position (e.g. in member selection) then that symbol is collected. It means that names of symbols defined and used in the same compilation unit are extracted. We've considered not extracting names of those symbols as an optimization strategy. It turned out that this is not correct. Check https://github.com/gkossakowski/sbt/issues/3 for an example of scenario where it matters.

All extracted names are returned in _decoded_ form. This way we stay consistent with the rest of incremental compiler which works with names in decoded form.

Names mentioned in Import nodes are handled properly but require some special logic for two reasons:

  1. The termSymbol of Import nodes point to the symbol of the prefix it imports from (not the actual members that we import, that are represented as names). 2. ImportSelector is not subtype of Tree therefore is not processed by Tree.foreach.

Another type of tree nodes that requires special handling is TypeTree. TypeTree nodes has a little bit odd representation:

  1. TypeTree.hasSymbol always returns false even when TypeTree.symbol returns a symbol 2. The original tree from which given TypeTree was derived is stored in TypeTree.original but Tree.forech doesn't walk into original tree so we missed it

The tree walking algorithm walks into TypeTree.original explicitly.

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Inherited
  1. ExtractUsedNames
  2. GlobalHelpers
  3. ClassName
  4. Compat
  5. AnyRef
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Instance Constructors

  1. new ExtractUsedNames(global: GlobalType)

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  4. object Feedback

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    Define common error messages for error reporting and assertions.

    Define common error messages for error reporting and assertions.

    Definition Classes
    GlobalHelpers
  5. object MacroExpansionOf

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    Definition Classes
    GlobalHelpers
  6. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  7. def className(s: GlobalType.Symbol): GlobalType.Name

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    Create a (source) name for a class symbol s.

    Create a (source) name for a class symbol s.

    Attributes
    protected
    Definition Classes
    ClassName
  8. def classNameAsSeenIn(in: GlobalType.Symbol, s: GlobalType.Symbol): String

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    Create a (source) name for the class symbol s with a prefix determined by the class symbol in.

    Create a (source) name for the class symbol s with a prefix determined by the class symbol in.

    If s represents a package object pkg3, then the returned name will be pkg1.pkg2.pkg3.package. If s represents a class Foo nested in package object pkg3 then the returned name is pkg1.pkg2.pk3.Foo.

    Note that some objects with special access rights are encoded in names (like qualified privates private[qualifier]). In order to get the right original names, we need to use unexpandedName.

    Attributes
    protected
    Definition Classes
    ClassName
  9. def classNameAsString(s: GlobalType.Symbol): String

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    Create a String (source) name for a class symbol s.

    Create a String (source) name for a class symbol s.

    Attributes
    protected
    Definition Classes
    ClassName
  10. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  11. def constructorName(cls: GlobalType.Symbol): GlobalType.Name

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    Given a class symbol cls, construct a name representing this constructor.

    Given a class symbol cls, construct a name representing this constructor. For a class:

    a.b.Foo

    this is:

    a;b;Foo;init;

    The prefix is important to avoid name hashing all constructors together (see #97), the weird format is necessary to avoid scalac or zinc trying to interpret this name (in particular we should not use '.' and we should not use '<init>'), we use ';' because it is one of the few characters that cannot appear in a valid JVM name.

    Attributes
    protected
    Definition Classes
    ClassName
  12. def constructorNameAsString(cls: GlobalType.Symbol, index: String): String

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    Attributes
    protected
    Definition Classes
    ClassName
  13. def constructorNameAsString(cls: GlobalType.Symbol): String

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    Attributes
    protected
    Definition Classes
    ClassName
  14. def enclOrModuleClass(s: GlobalType.Symbol): GlobalType.Symbol

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    Return the enclosing class or the module class if it's a module.

    Return the enclosing class or the module class if it's a module.

    Definition Classes
    GlobalHelpers
  15. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  16. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  17. def extractAndReport(unit: GlobalType.CompilationUnit): Unit

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  18. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  19. def flatclassName(s: GlobalType.Symbol, sep: Char, dollarRequired: Boolean): String

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    Attributes
    protected
    Definition Classes
    ClassName
  20. def flatname(s: GlobalType.Symbol, separator: Char): String

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    Creates a flat (binary) name for a class symbol s.

    Creates a flat (binary) name for a class symbol s.

    Attributes
    protected
    Definition Classes
    ClassName
  21. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  22. val global: GlobalType

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    Definition Classes
    ExtractUsedNamesGlobalHelpersClassNameCompat
  23. def hashCode(): Int

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    Definition Classes
    AnyRef → Any
  24. def ignoredSymbol(symbol: GlobalType.Symbol): Boolean

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    Return true if symbol shall be ignored, false otherwise.

    Return true if symbol shall be ignored, false otherwise.

    Definition Classes
    GlobalHelpers
    Annotations
    @inline()
  25. def ignoredType(tpe: GlobalType.Type): Boolean

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    Return true if type shall be ignored, false otherwise.

    Return true if type shall be ignored, false otherwise.

    Definition Classes
    GlobalHelpers
    Annotations
    @inline()
  26. def isEmptyName(name: GlobalType.Name): Boolean

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    Return true if name is empty, false otherwise.

    Return true if name is empty, false otherwise.

    Definition Classes
    GlobalHelpers
  27. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  28. final def isSyntheticCoreClass(sym: GlobalType.Symbol): Boolean

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    Definition Classes
    GlobalHelpers
  29. def isTopLevelModule(sym: GlobalType.Symbol): Boolean

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    Attributes
    protected
    Definition Classes
    ClassName
  30. def mangledName(s: GlobalType.Symbol): GlobalType.Name

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    Mangle a JVM symbol name in a format better suited for internal uses by sbt.

    Mangle a JVM symbol name in a format better suited for internal uses by sbt.

    Attributes
    protected
    Definition Classes
    ClassName
  31. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  32. final def notify(): Unit

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    Definition Classes
    AnyRef
  33. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  34. def processMacroExpansion(in: GlobalType.Tree)(func: (GlobalType.Tree) ⇒ Unit): Boolean

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    Returns true if given tree contains macro attchment.

    Returns true if given tree contains macro attchment. In such case calls func on tree from attachment.

    Definition Classes
    GlobalHelpers
  35. def processOriginalTreeAttachment(in: GlobalType.Tree)(func: (GlobalType.Tree) ⇒ Unit): Unit

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    Attributes
    protected
    Definition Classes
    Compat
  36. def processSAMAttachment(f: GlobalType.Function)(addDependency: (GlobalType.Symbol) ⇒ Unit): Unit

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    Attributes
    protected
    Definition Classes
    Compat
  37. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  38. def toString(): String

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    Definition Classes
    AnyRef → Any
  39. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  40. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  41. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from GlobalHelpers

Inherited from ClassName

Inherited from Compat

Inherited from AnyRef

Inherited from Any

Ungrouped