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/*
* Hard-coded IR for java.lang.String.
*/
import scala.scalajs.ir
import ir._
import ir.Definitions._
import ir.Infos._
import ir.Trees._
import ir.Types._
import ir.Position.NoPosition
/** Hard-coded IR for java.lang.String.
* Unlike for the other hijacked classes, scalac does not like at all to
* compile even a mocked version of java.lang.String. So we have to bypass
* entirely the compiler to define java.lang.String.
*/
object JavaLangString {
/** Optimizer hints with `@inline`
* Unfortunately we do not have access to private details of
* [[OptimizerHints]], so we cannot do this cleanly. But it is fine
* somehow because we're part of the same project implementation.
*/
private def inlineOptimizerHints = new OptimizerHints(2)
val InfoAndTree = (Info, Definition)
private def Info = ClassInfo(
name = "java.lang.String",
encodedName = "T",
ancestorCount = 1,
kind = ClassKind.HijackedClass,
superClass = "O",
ancestors = List(
"T", "Ljava_io_Serializable", "jl_CharSequence", "jl_Comparable", "O"),
methods = List(
MethodInfo("equals__O__Z",
optimizerHints = inlineOptimizerHints
),
MethodInfo("hashCode__I",
calledMethods = Map(
"sjsr_RuntimeString$" -> List("hashCode__T__I")
),
accessedModules = List("sjsr_RuntimeString"),
optimizerHints = inlineOptimizerHints
),
MethodInfo("compareTo__T__I",
calledMethods = Map(
"sjsr_RuntimeString$" -> List("compareTo__T__T__I")
),
accessedModules = List("sjsr_RuntimeString"),
optimizerHints = inlineOptimizerHints
),
MethodInfo("compareTo__O__I",
calledMethods = Map(
"T" -> List("compareTo__T__I")
),
optimizerHints = inlineOptimizerHints
),
MethodInfo("toString__T",
optimizerHints = inlineOptimizerHints
),
MethodInfo("charAt__I__C",
calledMethods = Map(
"sjsr_RuntimeString$" -> List("charAt__T__I__C")
),
accessedModules = List("sjsr_RuntimeString"),
optimizerHints = inlineOptimizerHints
),
MethodInfo("length__I",
calledMethods = Map(
"sjsr_RuntimeString$" -> List("length__T__I")
),
accessedModules = List("sjsr_RuntimeString"),
optimizerHints = inlineOptimizerHints
),
MethodInfo("subSequence__I__I__jl_CharSequence",
calledMethods = Map(
"sjsr_RuntimeString$" -> List("subSequence__T__I__I__jl_CharSequence")
),
accessedModules = List("sjsr_RuntimeString"),
optimizerHints = inlineOptimizerHints
)
)
)
private def Definition = {
implicit val DummyPos = NoPosition
val ThisType = ClassType(StringClass)
ClassDef(
Ident("T", Some("java.lang.String")),
ClassKind.HijackedClass,
Some(Ident("O", Some("java.lang.Object"))),
List(
Ident("Ljava_io_Serializable", Some("java.io.Serializable")),
Ident("jl_CharSequence", Some("java.lang.CharSequence")),
Ident("jl_Comparable", Some("java.lang.Comparable")),
Ident("O", Some("java.lang.Object"))
),
List(
/* def equals(that: Object): Boolean = this eq that */
MethodDef(
Ident("equals__O__Z", Some("equals__O__Z")),
List(ParamDef(Ident("that", Some("that")), AnyType, mutable = false)),
BooleanType,
{
BinaryOp(BinaryOp.===,
This()(ThisType),
VarRef(Ident("that", Some("that")), mutable = false)(AnyType))
})(None),
/* def hashCode(): Int = RuntimeString.hashCode(this) */
MethodDef(
Ident("hashCode__I", Some("hashCode__I")),
Nil,
IntType,
{
Apply(
LoadModule(ClassType("sjsr_RuntimeString$")),
Ident("hashCode__T__I", Some("hashCode__T__I")),
List(This()(ThisType)))(IntType)
})(None),
/* def compareTo(that: String): Int = RuntimeString.compareTo(this, that) */
MethodDef(
Ident("compareTo__T__I", Some("compareTo__T__I")),
List(ParamDef(Ident("that", Some("that")), ThisType, mutable = false)),
IntType,
{
Apply(
LoadModule(ClassType("sjsr_RuntimeString$")),
Ident("compareTo__T__T__I", Some("compareTo__T__T__I")),
List(
This()(ThisType),
VarRef(Ident("that", Some("that")), mutable = false)(ThisType)))(IntType)
})(None),
/* def compareTo(that: Object): Int = compareTo(that.asInstanceOf[String]) */
MethodDef(
Ident("compareTo__O__I", Some("compareTo__O__I")),
List(ParamDef(Ident("that", Some("that")), AnyType, mutable = false)),
IntType,
{
Apply(
This()(ThisType),
Ident("compareTo__T__I", Some("compareTo__T__I")),
List(AsInstanceOf(
VarRef(Ident("that", Some("that")), mutable = false)(AnyType),
ThisType)))(IntType)
})(None),
/* def toString(): String = this */
MethodDef(
Ident("toString__T", Some("toString__T")),
Nil,
ClassType(StringClass),
{
This()(ThisType)
})(None),
/* def charAt(i: Int): Char = RuntimeString.charAt(this, i) */
MethodDef(
Ident("charAt__I__C", Some("charAt__I__C")),
List(ParamDef(Ident("i", Some("i")), IntType, mutable = false)),
IntType,
{
Apply(
LoadModule(ClassType("sjsr_RuntimeString$")),
Ident("charAt__T__I__C", Some("charAt__T__I__C")),
List(
This()(ThisType),
VarRef(Ident("i", Some("i")), mutable = false)(IntType)))(IntType)
})(None),
/* def length(): Int = RuntimeString.length(this) */
MethodDef(
Ident("length__I", Some("length__I")),
Nil,
IntType,
{
Apply(
LoadModule(ClassType("sjsr_RuntimeString$")),
Ident("length__T__I", Some("length__T__I")),
List(This()(ThisType)))(IntType)
})(None),
/* def subSequence(begin: Int, end: Int): CharSequence =
* RuntimeString.subSequence(this, begin, end)
*/
MethodDef(
Ident("subSequence__I__I__jl_CharSequence",
Some("subSequence__I__I__jl_CharSequence")),
List(
ParamDef(Ident("begin", Some("begin")), IntType, mutable = false),
ParamDef(Ident("end", Some("end")), IntType, mutable = false)
),
ClassType("jl_CharSequence"),
{
Apply(
LoadModule(ClassType("sjsr_RuntimeString$")),
Ident("subSequence__T__I__I__jl_CharSequence",
Some("subSequence__T__I__I__jl_CharSequence")),
List(
This()(ThisType),
VarRef(Ident("begin", Some("begin")), mutable = false)(IntType),
VarRef(Ident("end", Some("end")), mutable = false)(IntType)))(
ClassType("jl_CharSequence"))
})(None)
))
}
}
|
