SymbolModule
Methods of the module object val Symbol
Attributes
- Graph
-
- Supertypes
- Self type
Members list
Value members
Abstract methods
The class Symbol of a global class definition
The class Symbol of a global class definition
Attributes
Generates a pattern bind symbol with the given parent, name and type.
Generates a pattern bind symbol with the given parent, name and type.
This symbol starts without an accompanying definition. It is the meta-programmer's responsibility to provide exactly one corresponding definition by passing this symbol to the BindDef constructor.
Value parameters
- flags
-
extra flags to with which the symbol should be constructed
- name
-
The name of the binding
- parent
-
The owner of the binding
- tpe
-
The type of the binding
Attributes
- Note
-
As a macro can only splice code into the point at which it is expanded, all generated symbols must be direct or indirect children of the reflection context's owner.
Generates a new method symbol with the given parent, name and type.
Generates a new method symbol with the given parent, name and type.
To define a member method of a class, use the newMethod
within the decls
function of newClass
.
Value parameters
- name
-
The name of the method
- parent
-
The owner of the method
- tpe
-
The type of the method (MethodType, PolyType, ByNameType) This symbol starts without an accompanying definition. It is the meta-programmer's responsibility to provide exactly one corresponding definition by passing this symbol to the DefDef constructor.
Attributes
- Note
-
As a macro can only splice code into the point at which it is expanded, all generated symbols must be direct or indirect children of the reflection context's owner.
Works as the other newMethod, but with additional parameters.
Works as the other newMethod, but with additional parameters.
To define a member method of a class, use the newMethod
within the decls
function of newClass
.
Value parameters
- flags
-
extra flags to with which the symbol should be constructed
- name
-
The name of the method
- parent
-
The owner of the method
- privateWithin
-
the symbol within which this new method symbol should be private. May be noSymbol.
- tpe
-
The type of the method (MethodType, PolyType, ByNameType)
Attributes
Generates a new val/var/lazy val symbol with the given parent, name and type.
Generates a new val/var/lazy val symbol with the given parent, name and type.
This symbol starts without an accompanying definition. It is the meta-programmer's responsibility to provide exactly one corresponding definition by passing this symbol to the ValDef constructor.
Note: Also see ValDef.let
Value parameters
- flags
-
extra flags to with which the symbol should be constructed
- name
-
The name of the val/var/lazy val
- parent
-
The owner of the val/var/lazy val
- privateWithin
-
the symbol within which this new method symbol should be private. May be noSymbol.
- tpe
-
The type of the val/var/lazy val
Attributes
- Note
-
As a macro can only splice code into the point at which it is expanded, all generated symbols must be direct or indirect children of the reflection context's owner.
Get class symbol if class is either defined in current compilation run or present on classpath.
Get class symbol if class is either defined in current compilation run or present on classpath.
Attributes
Get method symbol if method is either defined in current compilation run or present on classpath. Throws if the method has an overload.
Get method symbol if method is either defined in current compilation run or present on classpath. Throws if the method has an overload.
Attributes
Get module symbol if module is either defined in current compilation run or present on classpath.
Get module symbol if module is either defined in current compilation run or present on classpath.
Attributes
Get package symbol if package is either defined in current compilation run or present on classpath.
Get package symbol if package is either defined in current compilation run or present on classpath.
Attributes
Symbol of the definition that encloses the current splicing context.
Symbol of the definition that encloses the current splicing context.
For example, the following call to spliceOwner
would return the symbol x
.
val x = ${ ... Symbol.spliceOwner ... }
For a macro splice, it is the symbol of the definition where the macro expansion happens.
Attributes
Experimental methods
Generates a new class symbol for a class with a parameterless constructor.
Generates a new class symbol for a class with a parameterless constructor.
Example usage:
val name: String = "myClass"
val parents = List(TypeTree.of[Object], TypeTree.of[Foo])
def decls(cls: Symbol): List[Symbol] =
List(Symbol.newMethod(cls, "foo", MethodType(Nil)(_ => Nil, _ => TypeRepr.of[Unit])))
val cls = Symbol.newClass(Symbol.spliceOwner, name, parents = parents.map(_.tpe), decls, selfType = None)
val fooSym = cls.declaredMethod("foo").head
val fooDef = DefDef(fooSym, argss => Some('{println(s"Calling foo")}.asTerm))
val clsDef = ClassDef(cls, parents, body = List(fooDef))
val newCls = Typed(Apply(Select(New(TypeIdent(cls)), cls.primaryConstructor), Nil), TypeTree.of[Foo])
Block(List(clsDef), newCls).asExprOf[Foo]
constructs the equivalent to
'{
class myClass() extends Object with Foo {
def foo(): Unit = println("Calling foo")
}
new myClass(): Foo
}
Value parameters
- decls
-
The member declarations of the class provided the symbol of this class
- name
-
The name of the class
- parent
-
The owner of the class
- parents
-
The parent classes of the class. The first parent must not be a trait.
- selfType
-
The self type of the class if it has one This symbol starts without an accompanying definition. It is the meta-programmer's responsibility to provide exactly one corresponding definition by passing this symbol to the ClassDef constructor.
Attributes
- Note
-
As a macro can only splice code into the point at which it is expanded, all generated symbols must be direct or indirect children of the reflection context's owner.
- Experimental
- true
Generates a new method symbol with the given parent, name and type.
Generates a new method symbol with the given parent, name and type.
To define a member method of a class, use the newMethod
within the decls
function of newClass
.
Value parameters
- flags
-
extra flags to with which the symbol should be constructed
- name
-
The name of the method
- parent
-
The owner of the method
- privateWithin
-
the symbol within which this new method symbol should be private. May be noSymbol. This symbol starts without an accompanying definition. It is the meta-programmer's responsibility to provide exactly one corresponding definition by passing this symbol to the DefDef constructor.
- tpe
-
The type of the method (MethodType, PolyType, ByNameType)
Attributes
- Note
-
As a macro can only splice code into the point at which it is expanded, all generated symbols must be direct or indirect children of the reflection context's owner.
- Experimental
- true
Generates a new val/var/lazy val symbol with the given parent, name prefix and type.
Generates a new val/var/lazy val symbol with the given parent, name prefix and type.
This symbol starts without an accompanying definition. It is the meta-programmer's responsibility to provide exactly one corresponding definition by passing this symbol to the ValDef constructor.
Note: Also see newVal Note: Also see ValDef.let
Value parameters
- flags
-
extra flags to with which the symbol should be constructed
- name
-
The name of the val/var/lazy val
- parent
-
The owner of the val/var/lazy val
- privateWithin
-
the symbol within which this new method symbol should be private. May be noSymbol.
- tpe
-
The type of the val/var/lazy val
Attributes
- Note
-
As a macro can only splice code into the point at which it is expanded, all generated symbols must be direct or indirect children of the reflection context's owner.
- Experimental
- true