scala.Predef

MacroCompiler

trait MacroCompiler extends AnyRef

Type class which abstracts compilation of macro defs.

Previously macro defs were linked to macro impls using hardcoded logic in Macros.scala. This logic took the right-hand side of a macro def, typechecked it as a reference to a static method and then used that method as a corresponding macro implementation.

Now compilation of macro defs is fully extensible. Instead of using a hardcoded implementation to look up macro impls, the macro engine performs an implicit search of a MacroCompiler in scope and then invokes its resolveMacroImpl method, passing it the DefDef of a macro def and expecting a reference to a static method in return. Of course, resolveMacroImpl should itself be a macro, namely an untyped one, for this to work.

Default instance of the type class, Predef.DefaultMacroCompiler, implements formerly hardcoded typechecking logic. Alternative implementations could for instance provide lightweight syntax for macro defs, generation macro impls on-the-fly using c.introduceToplevel.

Source
Predef.scala
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  1. by StringAdd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  5. by StringAdd
  6. by StringFormat
  7. by Ensuring
  8. by ArrowAssoc
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  1. final def !=(arg0: AnyRef): Boolean

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

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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  8. final def eq(arg0: AnyRef): Boolean

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  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

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  11. final def getClass(): java.lang.Class[_]

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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

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  14. final def ne(arg0: AnyRef): Boolean

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  15. final def notify(): Unit

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  16. final def notifyAll(): Unit

    Definition Classes
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  17. def resolveMacroImpl(macroDef: <untyped>): <untyped>

  18. final def synchronized[T0](arg0: ⇒ T0): T0

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  19. def toString(): java.lang.String

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  20. final def wait(): Unit

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  21. final def wait(arg0: Long, arg1: Int): Unit

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  22. final def wait(arg0: Long): Unit

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Shadowed Implicit Value Members

  1. def +(other: String): java.lang.String

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to StringAdd[MacroCompiler] performed by method StringAdd in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: StringAdd[MacroCompiler]).+(other)
    Definition Classes
    StringAdd

  2. def +(other: String): java.lang.String

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to StringAdd[MacroCompiler] performed by method StringAdd in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    (macroCompiler: StringAdd[MacroCompiler]).+(other)
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  3. def ->[B](y: B): (MacroCompiler, B)

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to ArrowAssoc[MacroCompiler] performed by method ArrowAssoc in scala.Predef.
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    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    (macroCompiler: ArrowAssoc[MacroCompiler]).->(y)
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    @inline()

  4. def ->[B](y: B): (MacroCompiler, B)

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to ArrowAssoc[MacroCompiler] performed by method ArrowAssoc in scala.Predef.
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    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    (macroCompiler: ArrowAssoc[MacroCompiler]).->(y)
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    @inline()

  5. def ensuring(cond: (MacroCompiler) ⇒ Boolean, msg: ⇒ Any): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
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    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond, msg)
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  6. def ensuring(cond: (MacroCompiler) ⇒ Boolean): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
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    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond)
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  7. def ensuring(cond: Boolean, msg: ⇒ Any): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond, msg)
    Definition Classes
    Ensuring

  8. def ensuring(cond: Boolean): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond)
    Definition Classes
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  9. def ensuring(cond: (MacroCompiler) ⇒ Boolean, msg: ⇒ Any): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond, msg)
    Definition Classes
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  10. def ensuring(cond: (MacroCompiler) ⇒ Boolean): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond)
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  11. def ensuring(cond: Boolean, msg: ⇒ Any): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond, msg)
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  12. def ensuring(cond: Boolean): MacroCompiler

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to Ensuring[MacroCompiler] performed by method Ensuring in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: Ensuring[MacroCompiler]).ensuring(cond)
    Definition Classes
    Ensuring

  13. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to StringFormat[MacroCompiler] performed by method StringFormat in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    (macroCompiler: StringFormat[MacroCompiler]).formatted(fmtstr)
    Definition Classes
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    Annotations
    @inline()

  14. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to StringFormat[MacroCompiler] performed by method StringFormat in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: StringFormat[MacroCompiler]).formatted(fmtstr)
    Definition Classes
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    Annotations
    @inline()

  15. def →[B](y: B): (MacroCompiler, B)

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to ArrowAssoc[MacroCompiler] performed by method ArrowAssoc in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
    To access this member you can use a type ascription:
    (macroCompiler: ArrowAssoc[MacroCompiler]).→(y)
    Definition Classes
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  16. def →[B](y: B): (MacroCompiler, B)

    Implicit information
    This member is added by an implicit conversion from MacroCompiler to ArrowAssoc[MacroCompiler] performed by method ArrowAssoc in scala.Predef.
    Shadowing
    This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion StringAdd from MacroCompiler to StringAdd[MacroCompiler]

Inherited by implicit conversion StringFormat from MacroCompiler to StringFormat[MacroCompiler]

Inherited by implicit conversion Ensuring from MacroCompiler to Ensuring[MacroCompiler]

Inherited by implicit conversion ArrowAssoc from MacroCompiler to ArrowAssoc[MacroCompiler]

Inherited by implicit conversion StringAdd from MacroCompiler to StringAdd[MacroCompiler]

Inherited by implicit conversion StringFormat from MacroCompiler to StringFormat[MacroCompiler]

Inherited by implicit conversion Ensuring from MacroCompiler to Ensuring[MacroCompiler]

Inherited by implicit conversion ArrowAssoc from MacroCompiler to ArrowAssoc[MacroCompiler]

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