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org.scalajs.ir.Hashers.scala Maven / Gradle / Ivy
/*
* Scala.js (https://www.scala-js.org/)
*
* Copyright EPFL.
*
* Licensed under Apache License 2.0
* (https://www.apache.org/licenses/LICENSE-2.0).
*
* See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*/
package org.scalajs.ir
import java.io.{DataOutputStream, OutputStream}
import Names._
import Trees._
import Types._
import Tags._
object Hashers {
def hashMethodDef(methodDef: MethodDef): MethodDef = {
if (methodDef.version.isHash) {
methodDef
} else {
val hasher = new TreeHasher()
val MethodDef(flags, name, originalName, args, resultType, body) = methodDef
hasher.mixPos(methodDef.pos)
hasher.mixInt(MemberFlags.toBits(flags))
hasher.mixMethodIdent(name)
hasher.mixOriginalName(originalName)
hasher.mixParamDefs(args)
hasher.mixType(resultType)
body.foreach(hasher.mixTree)
hasher.mixInt(OptimizerHints.toBits(methodDef.optimizerHints))
val hash = hasher.finalizeHash()
MethodDef(flags, name, originalName, args, resultType, body)(
methodDef.optimizerHints, hash)(methodDef.pos)
}
}
def hashJSConstructorDef(ctorDef: JSConstructorDef): JSConstructorDef = {
if (ctorDef.version.isHash) {
ctorDef
} else {
val hasher = new TreeHasher()
val JSConstructorDef(flags, params, restParam, body) = ctorDef
hasher.mixPos(ctorDef.pos)
hasher.mixInt(MemberFlags.toBits(flags))
hasher.mixParamDefs(params)
restParam.foreach(hasher.mixParamDef(_))
hasher.mixPos(body.pos)
hasher.mixTrees(body.allStats)
hasher.mixInt(OptimizerHints.toBits(ctorDef.optimizerHints))
val hash = hasher.finalizeHash()
JSConstructorDef(flags, params, restParam, body)(
ctorDef.optimizerHints, hash)(ctorDef.pos)
}
}
def hashJSMethodDef(methodDef: JSMethodDef): JSMethodDef = {
if (methodDef.version.isHash) {
methodDef
} else {
val hasher = new TreeHasher()
val JSMethodDef(flags, name, params, restParam, body) = methodDef
hasher.mixPos(methodDef.pos)
hasher.mixInt(MemberFlags.toBits(flags))
hasher.mixTree(name)
hasher.mixParamDefs(params)
restParam.foreach(hasher.mixParamDef(_))
hasher.mixTree(body)
hasher.mixInt(OptimizerHints.toBits(methodDef.optimizerHints))
val hash = hasher.finalizeHash()
JSMethodDef(flags, name, params, restParam, body)(
methodDef.optimizerHints, hash)(methodDef.pos)
}
}
def hashJSPropertyDef(propDef: JSPropertyDef): JSPropertyDef = {
if (propDef.version.isHash) {
propDef
} else {
val hasher = new TreeHasher()
val JSPropertyDef(flags, name, getterBody, setterArgAndBody) = propDef
hasher.mixPos(propDef.pos)
hasher.mixInt(MemberFlags.toBits(flags))
hasher.mixTree(name)
getterBody.foreach(hasher.mixTree(_))
setterArgAndBody.foreach { case (param, body) =>
hasher.mixParamDef(param)
hasher.mixTree(body)
}
val hash = hasher.finalizeHash()
JSPropertyDef(flags, name, getterBody, setterArgAndBody)(hash)(propDef.pos)
}
}
def hashTopLevelExportDef(tle: TopLevelExportDef): TopLevelExportDef = tle match {
case TopLevelMethodExportDef(moduleID, methodDef) =>
TopLevelMethodExportDef(moduleID, hashJSMethodDef(methodDef))(tle.pos)
case _:TopLevelFieldExportDef | _:TopLevelModuleExportDef |
_:TopLevelJSClassExportDef =>
tle
}
/** Hash the definitions in a ClassDef (where applicable) */
def hashClassDef(classDef: ClassDef): ClassDef = {
import classDef._
val newMethods = methods.map(hashMethodDef(_))
val newJSConstructorDef = jsConstructor.map(hashJSConstructorDef(_))
val newExportedMembers = jsMethodProps.map {
case methodDef: JSMethodDef => hashJSMethodDef(methodDef)
case propDef: JSPropertyDef => hashJSPropertyDef(propDef)
}
val newTopLevelExportDefs = topLevelExportDefs.map(hashTopLevelExportDef(_))
ClassDef(name, originalName, kind, jsClassCaptures, superClass, interfaces,
jsSuperClass, jsNativeLoadSpec, fields, newMethods, newJSConstructorDef,
newExportedMembers, jsNativeMembers, newTopLevelExportDefs)(
optimizerHints)
}
private final class TreeHasher {
private[this] val digestBuilder = new SHA1.DigestBuilder
private[this] val digestStream = {
new DataOutputStream(new OutputStream {
def write(b: Int): Unit =
digestBuilder.update(b.toByte)
override def write(b: Array[Byte]): Unit =
digestBuilder.update(b)
override def write(b: Array[Byte], off: Int, len: Int): Unit =
digestBuilder.update(b, off, len)
})
}
def finalizeHash(): Version =
Version.fromHash(digestBuilder.finalizeDigest())
def mixParamDef(paramDef: ParamDef): Unit = {
mixPos(paramDef.pos)
mixLocalIdent(paramDef.name)
mixOriginalName(paramDef.originalName)
mixType(paramDef.ptpe)
mixBoolean(paramDef.mutable)
}
def mixParamDefs(paramDefs: List[ParamDef]): Unit =
paramDefs.foreach(mixParamDef)
def mixTree(tree: Tree): Unit = {
mixPos(tree.pos)
tree match {
case VarDef(ident, originalName, vtpe, mutable, rhs) =>
mixTag(TagVarDef)
mixLocalIdent(ident)
mixOriginalName(originalName)
mixType(vtpe)
mixBoolean(mutable)
mixTree(rhs)
case Skip() =>
mixTag(TagSkip)
case Block(stats) =>
mixTag(TagBlock)
mixTrees(stats)
case Labeled(label, tpe, body) =>
mixTag(TagLabeled)
mixLabelIdent(label)
mixType(tpe)
mixTree(body)
case Assign(lhs, rhs) =>
mixTag(TagAssign)
mixTree(lhs)
mixTree(rhs)
case Return(expr, label) =>
mixTag(TagReturn)
mixTree(expr)
mixLabelIdent(label)
case If(cond, thenp, elsep) =>
mixTag(TagIf)
mixTree(cond)
mixTree(thenp)
mixTree(elsep)
mixType(tree.tpe)
case While(cond, body) =>
mixTag(TagWhile)
mixTree(cond)
mixTree(body)
case ForIn(obj, keyVar, keyVarOriginalName, body) =>
mixTag(TagForIn)
mixTree(obj)
mixLocalIdent(keyVar)
mixOriginalName(keyVarOriginalName)
mixTree(body)
case TryCatch(block, errVar, errVarOriginalName, handler) =>
mixTag(TagTryCatch)
mixTree(block)
mixLocalIdent(errVar)
mixOriginalName(errVarOriginalName)
mixTree(handler)
mixType(tree.tpe)
case TryFinally(block, finalizer) =>
mixTag(TagTryFinally)
mixTree(block)
mixTree(finalizer)
mixType(tree.tpe)
case Throw(expr) =>
mixTag(TagThrow)
mixTree(expr)
case Match(selector, cases, default) =>
mixTag(TagMatch)
mixTree(selector)
cases foreach { case (patterns, body) =>
mixTrees(patterns)
mixTree(body)
}
mixTree(default)
mixType(tree.tpe)
case Debugger() =>
mixTag(TagDebugger)
case New(className, ctor, args) =>
mixTag(TagNew)
mixName(className)
mixMethodIdent(ctor)
mixTrees(args)
case LoadModule(className) =>
mixTag(TagLoadModule)
mixName(className)
case StoreModule() =>
mixTag(TagStoreModule)
case Select(qualifier, field) =>
mixTag(TagSelect)
mixTree(qualifier)
mixFieldIdent(field)
mixType(tree.tpe)
case SelectStatic(field) =>
mixTag(TagSelectStatic)
mixFieldIdent(field)
mixType(tree.tpe)
case SelectJSNativeMember(className, member) =>
mixTag(TagSelectJSNativeMember)
mixName(className)
mixMethodIdent(member)
case Apply(flags, receiver, method, args) =>
mixTag(TagApply)
mixInt(ApplyFlags.toBits(flags))
mixTree(receiver)
mixMethodIdent(method)
mixTrees(args)
mixType(tree.tpe)
case ApplyStatically(flags, receiver, className, method, args) =>
mixTag(TagApplyStatically)
mixInt(ApplyFlags.toBits(flags))
mixTree(receiver)
mixName(className)
mixMethodIdent(method)
mixTrees(args)
mixType(tree.tpe)
case ApplyStatic(flags, className, method, args) =>
mixTag(TagApplyStatic)
mixInt(ApplyFlags.toBits(flags))
mixName(className)
mixMethodIdent(method)
mixTrees(args)
mixType(tree.tpe)
case ApplyDynamicImport(flags, className, method, args) =>
mixTag(TagApplyDynamicImport)
mixInt(ApplyFlags.toBits(flags))
mixName(className)
mixMethodIdent(method)
mixTrees(args)
case UnaryOp(op, lhs) =>
mixTag(TagUnaryOp)
mixInt(op)
mixTree(lhs)
case BinaryOp(op, lhs, rhs) =>
mixTag(TagBinaryOp)
mixInt(op)
mixTree(lhs)
mixTree(rhs)
case NewArray(typeRef, length) =>
mixTag(TagNewArray)
mixArrayTypeRef(typeRef)
mixTrees(length :: Nil) // mixed as a list for historical reasons
case ArrayValue(typeRef, elems) =>
mixTag(TagArrayValue)
mixArrayTypeRef(typeRef)
mixTrees(elems)
case ArrayLength(array) =>
mixTag(TagArrayLength)
mixTree(array)
case ArraySelect(array, index) =>
mixTag(TagArraySelect)
mixTree(array)
mixTree(index)
mixType(tree.tpe)
case RecordValue(tpe, elems) =>
mixTag(TagRecordValue)
mixType(tpe)
mixTrees(elems)
case RecordSelect(record, field) =>
mixTag(TagRecordSelect)
mixTree(record)
mixSimpleFieldIdent(field)
mixType(tree.tpe)
case IsInstanceOf(expr, testType) =>
mixTag(TagIsInstanceOf)
mixTree(expr)
mixType(testType)
case AsInstanceOf(expr, tpe) =>
mixTag(TagAsInstanceOf)
mixTree(expr)
mixType(tpe)
case GetClass(expr) =>
mixTag(TagGetClass)
mixTree(expr)
case Clone(expr) =>
mixTag(TagClone)
mixTree(expr)
case IdentityHashCode(expr) =>
mixTag(TagIdentityHashCode)
mixTree(expr)
case WrapAsThrowable(expr) =>
mixTag(TagWrapAsThrowable)
mixTree(expr)
case UnwrapFromThrowable(expr) =>
mixTag(TagUnwrapFromThrowable)
mixTree(expr)
case JSNew(ctor, args) =>
mixTag(TagJSNew)
mixTree(ctor)
mixTreeOrJSSpreads(args)
case JSPrivateSelect(qualifier, field) =>
mixTag(TagJSPrivateSelect)
mixTree(qualifier)
mixFieldIdent(field)
case JSSelect(qualifier, item) =>
mixTag(TagJSSelect)
mixTree(qualifier)
mixTree(item)
case JSFunctionApply(fun, args) =>
mixTag(TagJSFunctionApply)
mixTree(fun)
mixTreeOrJSSpreads(args)
case JSMethodApply(receiver, method, args) =>
mixTag(TagJSMethodApply)
mixTree(receiver)
mixTree(method)
mixTreeOrJSSpreads(args)
case JSSuperSelect(superClass, qualifier, item) =>
mixTag(TagJSSuperSelect)
mixTree(superClass)
mixTree(qualifier)
mixTree(item)
case JSSuperMethodCall(superClass, receiver, method, args) =>
mixTag(TagJSSuperMethodCall)
mixTree(superClass)
mixTree(receiver)
mixTree(method)
mixTreeOrJSSpreads(args)
case JSSuperConstructorCall(args) =>
mixTag(TagJSSuperConstructorCall)
mixTreeOrJSSpreads(args)
case JSImportCall(arg) =>
mixTag(TagJSImportCall)
mixTree(arg)
case JSNewTarget() =>
mixTag(TagJSNewTarget)
case JSImportMeta() =>
mixTag(TagJSImportMeta)
case LoadJSConstructor(className) =>
mixTag(TagLoadJSConstructor)
mixName(className)
case LoadJSModule(className) =>
mixTag(TagLoadJSModule)
mixName(className)
case JSDelete(qualifier, item) =>
mixTag(TagJSDelete)
mixTree(qualifier)
mixTree(item)
case JSUnaryOp(op, lhs) =>
mixTag(TagJSUnaryOp)
mixInt(op)
mixTree(lhs)
case JSBinaryOp(op, lhs, rhs) =>
mixTag(TagJSBinaryOp)
mixInt(op)
mixTree(lhs)
mixTree(rhs)
case JSArrayConstr(items) =>
mixTag(TagJSArrayConstr)
mixTreeOrJSSpreads(items)
case JSObjectConstr(fields) =>
mixTag(TagJSObjectConstr)
fields.foreach { case (key, value) =>
mixTree(key)
mixTree(value)
}
case JSGlobalRef(name) =>
mixTag(TagJSGlobalRef)
mixString(name)
case JSTypeOfGlobalRef(globalRef) =>
mixTag(TagJSTypeOfGlobalRef)
mixTree(globalRef)
case JSLinkingInfo() =>
mixTag(TagJSLinkingInfo)
case Undefined() =>
mixTag(TagUndefined)
case Null() =>
mixTag(TagNull)
case BooleanLiteral(value) =>
mixTag(TagBooleanLiteral)
mixBoolean(value)
case CharLiteral(value) =>
mixTag(TagCharLiteral)
mixChar(value)
case ByteLiteral(value) =>
mixTag(TagByteLiteral)
mixByte(value)
case ShortLiteral(value) =>
mixTag(TagShortLiteral)
mixShort(value)
case IntLiteral(value) =>
mixTag(TagIntLiteral)
mixInt(value)
case LongLiteral(value) =>
mixTag(TagLongLiteral)
mixLong(value)
case FloatLiteral(value) =>
mixTag(TagFloatLiteral)
mixFloat(value)
case DoubleLiteral(value) =>
mixTag(TagDoubleLiteral)
mixDouble(value)
case StringLiteral(value) =>
mixTag(TagStringLiteral)
mixString(value)
case ClassOf(typeRef) =>
mixTag(TagClassOf)
mixTypeRef(typeRef)
case VarRef(ident) =>
mixTag(TagVarRef)
mixLocalIdent(ident)
mixType(tree.tpe)
case This() =>
mixTag(TagThis)
mixType(tree.tpe)
case Closure(arrow, captureParams, params, restParam, body, captureValues) =>
mixTag(TagClosure)
mixBoolean(arrow)
mixParamDefs(captureParams)
mixParamDefs(params)
restParam.foreach(mixParamDef(_))
mixTree(body)
mixTrees(captureValues)
case CreateJSClass(className, captureValues) =>
mixTag(TagCreateJSClass)
mixName(className)
mixTrees(captureValues)
case Transient(value) =>
throw new InvalidIRException(tree,
"Cannot hash a transient IR node (its value is of class " +
s"${value.getClass})")
}
}
def mixOptTree(optTree: Option[Tree]): Unit =
optTree.foreach(mixTree)
def mixTrees(trees: List[Tree]): Unit =
trees.foreach(mixTree)
def mixTreeOrJSSpreads(trees: List[TreeOrJSSpread]): Unit =
trees.foreach(mixTreeOrJSSpread)
def mixTreeOrJSSpread(tree: TreeOrJSSpread): Unit = {
tree match {
case JSSpread(items) =>
mixTag(TagJSSpread)
mixTree(items)
case tree: Tree =>
mixTree(tree)
}
}
def mixTypeRef(typeRef: TypeRef): Unit = typeRef match {
case PrimRef(tpe) =>
tpe match {
case NoType => mixTag(TagVoidRef)
case BooleanType => mixTag(TagBooleanRef)
case CharType => mixTag(TagCharRef)
case ByteType => mixTag(TagByteRef)
case ShortType => mixTag(TagShortRef)
case IntType => mixTag(TagIntRef)
case LongType => mixTag(TagLongRef)
case FloatType => mixTag(TagFloatRef)
case DoubleType => mixTag(TagDoubleRef)
case NullType => mixTag(TagNullRef)
case NothingType => mixTag(TagNothingRef)
}
case ClassRef(className) =>
mixTag(TagClassRef)
mixName(className)
case typeRef: ArrayTypeRef =>
mixTag(TagArrayTypeRef)
mixArrayTypeRef(typeRef)
}
def mixArrayTypeRef(arrayTypeRef: ArrayTypeRef): Unit = {
mixTypeRef(arrayTypeRef.base)
mixInt(arrayTypeRef.dimensions)
}
def mixType(tpe: Type): Unit = tpe match {
case AnyType => mixTag(TagAnyType)
case AnyNotNullType => mixTag(TagAnyNotNullType)
case NothingType => mixTag(TagNothingType)
case UndefType => mixTag(TagUndefType)
case BooleanType => mixTag(TagBooleanType)
case CharType => mixTag(TagCharType)
case ByteType => mixTag(TagByteType)
case ShortType => mixTag(TagShortType)
case IntType => mixTag(TagIntType)
case LongType => mixTag(TagLongType)
case FloatType => mixTag(TagFloatType)
case DoubleType => mixTag(TagDoubleType)
case StringType => mixTag(TagStringType)
case NullType => mixTag(TagNullType)
case NoType => mixTag(TagNoType)
case ClassType(className, nullable) =>
mixTag(if (nullable) TagClassType else TagNonNullClassType)
mixName(className)
case ArrayType(arrayTypeRef, nullable) =>
mixTag(if (nullable) TagArrayType else TagNonNullArrayType)
mixArrayTypeRef(arrayTypeRef)
case RecordType(fields) =>
mixTag(TagRecordType)
for (RecordType.Field(name, originalName, tpe, mutable) <- fields) {
mixName(name)
mixOriginalName(originalName)
mixType(tpe)
mixBoolean(mutable)
}
}
def mixLocalIdent(ident: LocalIdent): Unit = {
mixPos(ident.pos)
mixName(ident.name)
}
def mixLabelIdent(ident: LabelIdent): Unit = {
mixPos(ident.pos)
mixName(ident.name)
}
def mixSimpleFieldIdent(ident: SimpleFieldIdent): Unit = {
mixPos(ident.pos)
mixName(ident.name)
}
def mixFieldIdent(ident: FieldIdent): Unit = {
// For historical reasons, the className comes *before* the position
mixName(ident.name.className)
mixPos(ident.pos)
mixName(ident.name.simpleName)
}
def mixMethodIdent(ident: MethodIdent): Unit = {
mixPos(ident.pos)
mixMethodName(ident.name)
}
def mixClassIdent(ident: ClassIdent): Unit = {
mixPos(ident.pos)
mixName(ident.name)
}
def mixName(name: Name): Unit =
mixBytes(name.encoded.bytes)
def mixMethodName(name: MethodName): Unit = {
mixName(name.simpleName)
mixInt(name.paramTypeRefs.size)
for (typeRef <- name.paramTypeRefs)
mixTypeRef(typeRef)
mixTypeRef(name.resultTypeRef)
mixBoolean(name.isReflectiveProxy)
}
def mixOriginalName(originalName: OriginalName): Unit = {
mixBoolean(originalName.isDefined)
if (originalName.isDefined)
mixBytes(originalName.get.bytes)
}
private def mixBytes(bytes: Array[Byte]): Unit = {
digestStream.writeInt(bytes.length)
digestStream.write(bytes)
}
def mixPos(pos: Position): Unit = {
digestStream.writeUTF(pos.source.toString)
digestStream.writeInt(pos.line)
digestStream.writeInt(pos.column)
}
@inline
final def mixTag(tag: Int): Unit = mixInt(tag)
@inline
final def mixString(str: String): Unit = digestStream.writeUTF(str)
@inline
final def mixChar(c: Char): Unit = digestStream.writeChar(c)
@inline
final def mixByte(b: Byte): Unit = digestStream.writeByte(b)
@inline
final def mixShort(s: Short): Unit = digestStream.writeShort(s)
@inline
final def mixInt(i: Int): Unit = digestStream.writeInt(i)
@inline
final def mixLong(l: Long): Unit = digestStream.writeLong(l)
@inline
final def mixBoolean(b: Boolean): Unit = digestStream.writeBoolean(b)
@inline
final def mixFloat(f: Float): Unit = digestStream.writeFloat(f)
@inline
final def mixDouble(d: Double): Unit = digestStream.writeDouble(d)
}
}
