Trees

Type Members

1. case class Apply(receiver: Tree, method: Ident, args: List[Tree])(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

   

   Apply an instance method with dynamic dispatch (the default).

2. case class ApplyStatic(cls: ClassType, method: Ident, args: List[Tree])(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

   

   Apply a static method.

3. case class ApplyStatically(receiver: Tree, cls: ClassType, method: Ident, args: List[Tree])(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

   

   Apply an instance method with static dispatch (e.g., super calls).

4. case class ArrayLength(array: Tree)(implicit pos: Position) extends Tree with Product with Serializable

   

5. case class ArraySelect(array: Tree, index: Tree)(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

   

6. case class ArrayValue(tpe: ArrayType, elems: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

   

7. case class AsInstanceOf(expr: Tree, cls: ReferenceType)(implicit pos: Position) extends Tree with Product with Serializable

   

8. case class Assign(lhs: Tree, rhs: Tree)(implicit pos: Position) extends Tree with Product with Serializable

   

9. case class BinaryOp(op: Code, lhs: Tree, rhs: Tree)(implicit pos: Position) extends Tree with Product with Serializable

   

   Binary operation (always preserves pureness).

10. class Block extends Tree

    

11. case class BooleanLiteral(value: Boolean)(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

12. case class CallHelper(helper: String, args: List[Tree])(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

13. case class ClassDef(name: Ident, kind: ClassKind, superClass: Option[Ident], interfaces: List[Ident], jsName: Option[String], defs: List[Tree])(optimizerHints: OptimizerHints)(implicit pos: Position) extends Tree with Product with Serializable

    

14. case class ClassOf(cls: ReferenceType)(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

15. case class Closure(captureParams: List[ParamDef], params: List[ParamDef], body: Tree, captureValues: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

    Closure with explicit captures.

    Closure with explicit captures. The n captures map to the n first formal arguments.

16. case class ConstructorExportDef(name: String, args: List[ParamDef], body: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

17. case class Continue(label: Option[Ident] = None)(implicit pos: Position) extends Tree with Product with Serializable

    

18. case class Debugger()(implicit pos: Position) extends Tree with Product with Serializable

    

19. case class DoWhile(body: Tree, cond: Tree, label: Option[Ident] = None)(implicit pos: Position) extends Tree with Product with Serializable

    

20. case class DoubleLiteral(value: Double)(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

21. case class FieldDef(name: PropertyName, ftpe: Type, mutable: Boolean)(implicit pos: Position) extends Tree with Product with Serializable

    

22. case class FloatLiteral(value: Float)(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

23. case class GetClass(expr: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

24. case class Ident(name: String, originalName: Option[String])(implicit pos: Position) extends PropertyName with Product with Serializable

    

25. case class If(cond: Tree, thenp: Tree, elsep: Tree)(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

26. case class IntLiteral(value: Int)(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

27. case class IsInstanceOf(expr: Tree, cls: ReferenceType)(implicit pos: Position) extends Tree with Product with Serializable

    

28. case class JSArrayConstr(items: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

29. case class JSBinaryOp(op: Code, lhs: Tree, rhs: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

    Binary operation (always preserves pureness).

    Binary operation (always preserves pureness).

    Operations which do not preserve pureness are not allowed in this tree. These are notably +=, -=, *=, /= and %=

30. case class JSBracketMethodApply(receiver: Tree, method: Tree, args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

31. case class JSBracketSelect(qualifier: Tree, item: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

32. case class JSClassExportDef(fullName: String)(implicit pos: Position) extends Tree with Product with Serializable

    

33. case class JSDelete(prop: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

34. case class JSDotMethodApply(receiver: Tree, method: Ident, args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

35. case class JSDotSelect(qualifier: Tree, item: Ident)(implicit pos: Position) extends Tree with Product with Serializable

    

36. case class JSFunctionApply(fun: Tree, args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

37. case class JSLinkingInfo()(implicit pos: Position) extends Tree with Product with Serializable

    

38. case class JSNew(ctor: Tree, args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

39. case class JSObjectConstr(fields: List[(PropertyName, Tree)])(implicit pos: Position) extends Tree with Product with Serializable

    

40. case class JSSpread(items: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

    ...items, the "spread" operator of ECMAScript 6.

    ...items, the "spread" operator of ECMAScript 6.

    It is only valid in the args/items of a JSNew, JSFunctionApply, JSDotMethodApply, JSBracketMethodApply, or JSArrayConstr.

    items

    An Array whose items will be spread (not an arbitrary iterable)

41. case class JSSuperBracketCall(cls: ClassType, receiver: Tree, method: Tree, args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

    Calls a method inherited from the parent class of cls on receiver.

    Calls a method inherited from the parent class of cls on receiver.

    cls must be a Scala.js-defined JS class.

    Given the Scala.js-defined JS class

    @ScalaJSDefined
    class Foo extends Bar

    The node

    JSSuperBrackerCall(ClassType(Foo), receiver, method, args)

    which is printed as

    receiver.Foo::super[method](...args)

    has the following semantics:

    Bar.prototype[method].call(receiver, ...args)

    If this happens to be located in an instance method of Foo, *and* receiver happens to be This(), this is equivalent to the ES6 statement

    super[method](...args)

42. case class JSSuperBracketSelect(cls: ClassType, receiver: Tree, item: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

    Selects a property inherited from the parent class of cls on receiver.

    Selects a property inherited from the parent class of cls on receiver.

    cls must be a Scala.js-defined JS class.

    Given the Scala.js-defined JS class

    @ScalaJSDefined
    class Foo extends Bar

    The node

    JSSuperBrackerSelect(ClassType(Foo), qualifier, item)

    which is printed as

    qualifier.Foo::super[item]

    has the semantics of an ES6 super reference

    super[item]

    as if it were in an instance method of Foo with qualifier as the this value.

43. case class JSSuperConstructorCall(args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

    Super constructor call in the constructor of a Scala.js-defined JS class.

    Super constructor call in the constructor of a Scala.js-defined JS class.

    Exactly one such node must appear in the constructor of a Scala.js-defined JS class, at the top-level (possibly as a direct child of a top-level Block). Any other use of this node is invalid.

    Statements before this node, as well as the args, cannot contain any This() node. Statements after this node can use This().

    After the execution of this node, it is guaranteed that all fields declared in the current class have been created and initialized. Up to that point, accessing any field declared in this class (e.g., through an overridden method called from the super constructor) is undefined behavior.

    All in all, the shape of a constructor is therefore:

    {
      statementsNotUsingThis();
      JSSuperConstructorCall(...argsNotUsingThis);
      statementsThatMayUseThis()
    }

    which currently translates to something of the following shape:

    {
      statementsNotUsingThis();
      super(...argsNotUsingThis);
      this.privateField1 = 0;
      this["publicField2"] = false;
      statementsThatMayUseThis()
    }

44. case class JSUnaryOp(op: Code, lhs: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

    Unary operation (always preserves pureness).

    Unary operation (always preserves pureness).

    Operations which do not preserve pureness are not allowed in this tree. These are notably ++ and --

45. case class Labeled(label: Ident, tpe: Type, body: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

46. sealed trait Literal extends Tree

    

    Marker for literals.

    Marker for literals. Literals are always pure.

47. case class LoadJSConstructor(cls: ClassType)(implicit pos: Position) extends Tree with Product with Serializable

    

    Loads the constructor of a JS class (native or not).

    Loads the constructor of a JS class (native or not).

    cls must represent a non-trait JS class (native or not).

    This is used typically to instantiate a JS class, and most importantly if it is a Scala.js-defined JS class. Given the class

    @ScalaJSDefined
    class Foo(x: Int) extends js.Object

    The instantiation new Foo(1) would be represented as

    JSNew(LoadJSConstructor(ClassType("Foo")), List(IntLiteral(1)))

    This node is also useful to encode o.isInstanceOf[Foo]:

    JSBinaryOp(instanceof, o, LoadJSConstructor(ClassType("Foo")))

    If Foo is Scala.js-defined, the presence of this node makes it instantiable, and therefore reachable.

48. case class LoadJSModule(cls: ClassType)(implicit pos: Position) extends Tree with Product with Serializable

    

    Like LoadModule but for a JS module class.

49. case class LoadModule(cls: ClassType)(implicit pos: Position) extends Tree with Product with Serializable

    

50. case class LongLiteral(value: Long)(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

51. case class Match(selector: Tree, cases: List[(List[Literal], Tree)], default: Tree)(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

    A break-free switch (without fallthrough behavior).

    A break-free switch (without fallthrough behavior). Unlike a JavaScript switch, it can be used in expression position. It supports alternatives explicitly (hence the List[Tree] in cases), whereas in a switch one would use the fallthrough behavior to implement alternatives. (This is not a pattern matching construct like in Scala.)

52. case class MethodDef(static: Boolean, name: PropertyName, args: List[ParamDef], resultType: Type, body: Tree)(optimizerHints: OptimizerHints, hash: Option[TreeHash])(implicit pos: Position) extends Tree with Product with Serializable

    

53. case class ModuleExportDef(fullName: String)(implicit pos: Position) extends Tree with Product with Serializable

    

54. case class New(cls: ClassType, ctor: Ident, args: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

55. case class NewArray(tpe: ArrayType, lengths: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

56. case class Null()(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

57. final class OptimizerHints extends AnyVal

    

58. case class ParamDef(name: Ident, ptpe: Type, mutable: Boolean, rest: Boolean)(implicit pos: Position) extends Tree with Product with Serializable

    

59. case class PropertyDef(name: PropertyName, getterBody: Tree, setterArg: ParamDef, setterBody: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

60. sealed trait PropertyName extends AnyRef

    

61. case class RecordValue(tpe: RecordType, elems: List[Tree])(implicit pos: Position) extends Tree with Product with Serializable

    

62. case class Return(expr: Tree, label: Option[Ident] = None)(implicit pos: Position) extends Tree with Product with Serializable

    

63. case class Select(qualifier: Tree, item: Ident)(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

64. case class Skip()(implicit pos: Position) extends Tree with Product with Serializable

    

65. case class StoreModule(cls: ClassType, value: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

66. case class StringLiteral(value: String)(implicit pos: Position) extends Tree with Literal with PropertyName with Product with Serializable

    

67. case class This()(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

68. case class Throw(expr: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

69. sealed abstract class Tree extends AnyRef

    

    AST node of the IR.

70. final class TreeHash extends AnyRef

    

    A hash of a tree (usually a MethodDef).

    A hash of a tree (usually a MethodDef). Contains two SHA-1 hashes

71. case class Try(block: Tree, errVar: Ident, handler: Tree, finalizer: Tree)(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

72. case class UnaryOp(op: Code, lhs: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

    Unary operation (always preserves pureness).

73. case class Unbox(expr: Tree, charCode: Char)(implicit pos: Position) extends Tree with Product with Serializable

    

74. case class Undefined()(implicit pos: Position) extends Tree with Literal with Product with Serializable

    

75. case class UndefinedParam()(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

76. case class VarDef(name: Ident, vtpe: Type, mutable: Boolean, rhs: Tree)(implicit pos: Position) extends Tree with Product with Serializable

    

77. case class VarRef(ident: Ident)(tpe: Type)(implicit pos: Position) extends Tree with Product with Serializable

    

78. case class While(cond: Tree, body: Tree, label: Option[Ident] = None)(implicit pos: Position) extends Tree with Product with Serializable