case class InlineInfoAttribute(inlineInfo: InlineInfo) extends Attribute with Product with Serializable
This attribute stores the InlineInfo for a ClassBType as an independent classfile attribute. The compiler does so for every class being compiled.
The reason is that a precise InlineInfo can only be obtained if the symbol for a class is available. For example, we need to know if a method is final in Scala's terms, or if it has the @inline annotation. Looking up a class symbol for a given class filename is brittle (name-mangling).
The attribute is also helpful for inlining mixin methods. The mixin phase only adds mixin method symbols to classes that are being compiled. For all other class symbols, there are no mixin members. However, the inliner requires an InlineInfo for inlining mixin members. That problem is solved by reading the InlineInfo from this attribute.
In principle we could encode the InlineInfo into a Java annotation (instead of a classfile attribute). However, an attribute allows us to save many bits. In particular, note that the strings in an InlineInfo are serialized as references to constants in the constant pool, and those strings (method names, method signatures) would exist in there anyway. So the ScalaInlineAttribute remains relatively compact.
- Alphabetic
- By Inheritance
- InlineInfoAttribute
- Serializable
- Serializable
- Product
- Equals
- Attribute
- AnyRef
- Any
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
- Hide All
- Show All
- Public
- All
Instance Constructors
- new InlineInfoAttribute(inlineInfo: InlineInfo)
Value Members
-
final
def
!=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
- Definition Classes
- AnyRef → Any
-
def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to any2stringadd[InlineInfoAttribute] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
-
def
->[B](y: B): (InlineInfoAttribute, B)
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to ArrowAssoc[InlineInfoAttribute] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
-
final
def
==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
asInstanceOf[T0]: T0
- Definition Classes
- Any
-
def
clone(): AnyRef
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
def
ensuring(cond: (InlineInfoAttribute) ⇒ Boolean, msg: ⇒ Any): InlineInfoAttribute
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to Ensuring[InlineInfoAttribute] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: (InlineInfoAttribute) ⇒ Boolean): InlineInfoAttribute
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to Ensuring[InlineInfoAttribute] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): InlineInfoAttribute
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to Ensuring[InlineInfoAttribute] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): InlineInfoAttribute
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to Ensuring[InlineInfoAttribute] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
finalize(): Unit
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
-
def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to StringFormat[InlineInfoAttribute] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
-
final
def
getClass(): Class[_]
- Definition Classes
- AnyRef → Any
-
def
getLabels(): Array[Label]
- Attributes
- protected[scala.tools.asm]
- Definition Classes
- Attribute
- val inlineInfo: InlineInfo
-
def
isCodeAttribute(): Boolean
- Definition Classes
- Attribute
-
final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
def
isUnknown(): Boolean
Not sure what this method is good for, it is not invoked anywhere in the ASM framework.
Not sure what this method is good for, it is not invoked anywhere in the ASM framework. However, the example in the ASM manual also overrides it to
false
for custom attributes, so it might be a good idea.- Definition Classes
- InlineInfoAttribute → Attribute
-
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
- Definition Classes
- AnyRef
-
final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
-
def
read(cr: ClassReader, off: Int, len: Int, buf: Array[Char], codeOff: Int, labels: Array[Label]): InlineInfoAttribute
De-serialize the attribute into an InlineInfo.
De-serialize the attribute into an InlineInfo. The attribute starts at cr.b(off), but we don't need to access that array directly, we can use the
read
methods provided by the ClassReader.buf
is a pre-allocated character array that is guaranteed to be long enough to hold any string of the constant pool. So we can use it to invokecr.readUTF8
.- Definition Classes
- InlineInfoAttribute → Attribute
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
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
write(cw: ClassWriter, code: Array[Byte], len: Int, maxStack: Int, maxLocals: Int): ByteVector
Serialize the
inlineInfo
into a byte array.Serialize the
inlineInfo
into a byte array. Strings are added to the constant pool and serialized as references.- Definition Classes
- InlineInfoAttribute → Attribute
-
def
→[B](y: B): (InlineInfoAttribute, B)
- Implicit
- This member is added by an implicit conversion from InlineInfoAttribute to ArrowAssoc[InlineInfoAttribute] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
The Scala compiler and reflection APIs.