diff options
Diffstat (limited to 'examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Trees.scala')
| -rw-r--r-- | examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Trees.scala | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Trees.scala b/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Trees.scala deleted file mode 100644 index 0b86d1b..0000000 --- a/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Trees.scala +++ /dev/null @@ -1,194 +0,0 @@ -/* __ *\ -** ________ ___ / / ___ __ ____ Scala.js tools ** -** / __/ __// _ | / / / _ | __ / // __/ (c) 2014, LAMP/EPFL ** -** __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \ http://scala-js.org/ ** -** /____/\___/_/ |_/____/_/ | |__/ /____/ ** -** |/____/ ** -\* */ - - -package scala.scalajs.tools.javascript - -import scala.annotation.switch - -import scala.scalajs.ir -import ir.Position -import ir.Position.NoPosition - -object Trees { - import ir.Trees.requireValidIdent - - /** AST node of JavaScript. */ - abstract sealed class Tree { - val pos: Position - - def show: String = { - val writer = new java.io.StringWriter - val printer = new Printers.JSTreePrinter(writer) - printer.printTree(this, isStat = true) - writer.toString() - } - } - - case object EmptyTree extends Tree { - val pos = NoPosition - } - - // Comments - - case class DocComment(text: String)(implicit val pos: Position) extends Tree - - // Identifiers and properties - - sealed trait PropertyName { - def name: String - def pos: Position - } - - case class Ident(name: String, originalName: Option[String])( - implicit val pos: Position) extends PropertyName { - requireValidIdent(name) - } - - object Ident { - def apply(name: String)(implicit pos: Position): Ident = - new Ident(name, Some(name)) - } - - // Definitions - - case class VarDef(name: Ident, mutable: Boolean, rhs: Tree)(implicit val pos: Position) extends Tree { - def ref(implicit pos: Position): Tree = - VarRef(name, mutable = mutable) - } - - case class ParamDef(name: Ident, mutable: Boolean)(implicit val pos: Position) extends Tree { - def ref(implicit pos: Position): Tree = - VarRef(name, mutable = mutable) - } - - // Control flow constructs - - case class Skip()(implicit val pos: Position) extends Tree - - class Block private (val stats: List[Tree])(implicit val pos: Position) extends Tree { - override def toString(): String = - stats.mkString("Block(", ",", ")") - } - - object Block { - def apply(stats: List[Tree])(implicit pos: Position): Tree = { - val flattenedStats = stats flatMap { - case Skip() => Nil - case Block(subStats) => subStats - case other => other :: Nil - } - flattenedStats match { - case Nil => Skip() - case only :: Nil => only - case _ => new Block(flattenedStats) - } - } - - def apply(stats: Tree*)(implicit pos: Position): Tree = - apply(stats.toList) - - def unapply(block: Block): Some[List[Tree]] = Some(block.stats) - } - - case class Labeled(label: Ident, body: Tree)(implicit val pos: Position) extends Tree - - case class Assign(lhs: Tree, rhs: Tree)(implicit val pos: Position) extends Tree { - require(lhs match { - case _:VarRef | _:DotSelect | _:BracketSelect => true - case _ => false - }, s"Invalid lhs for Assign: $lhs") - } - - case class Return(expr: Tree)(implicit val pos: Position) extends Tree - - case class If(cond: Tree, thenp: Tree, elsep: Tree)(implicit val pos: Position) extends Tree - - case class While(cond: Tree, body: Tree, label: Option[Ident] = None)(implicit val pos: Position) extends Tree - - case class DoWhile(body: Tree, cond: Tree, label: Option[Ident] = None)(implicit val pos: Position) extends Tree - - case class Try(block: Tree, errVar: Ident, handler: Tree, finalizer: Tree)(implicit val pos: Position) extends Tree - - case class Throw(expr: Tree)(implicit val pos: Position) extends Tree - - case class Break(label: Option[Ident] = None)(implicit val pos: Position) extends Tree - - case class Continue(label: Option[Ident] = None)(implicit val pos: Position) extends Tree - - case class Switch(selector: Tree, cases: List[(Tree, Tree)], default: Tree)(implicit val pos: Position) extends Tree - - case class Debugger()(implicit val pos: Position) extends Tree - - // Expressions - - case class New(ctor: Tree, args: List[Tree])(implicit val pos: Position) extends Tree - - case class DotSelect(qualifier: Tree, item: Ident)(implicit val pos: Position) extends Tree - - case class BracketSelect(qualifier: Tree, item: Tree)(implicit val pos: Position) extends Tree - - /** Syntactic apply. - * It is a method call if fun is a dot-select or bracket-select. It is a - * function call otherwise. - */ - case class Apply(fun: Tree, args: List[Tree])(implicit val pos: Position) extends Tree - - case class Delete(prop: Tree)(implicit val pos: Position) extends Tree { - require(prop match { - case _:DotSelect | _:BracketSelect => true - case _ => false - }, s"Invalid prop for Delete: $prop") - } - - /** Unary operation (always preserves pureness). - * - * Operations which do not preserve pureness are not allowed in this tree. - * These are notably ++ and -- - */ - case class UnaryOp(op: String, lhs: Tree)(implicit val pos: Position) extends Tree - - /** Binary operation (always preserves pureness). - * - * Operations which do not preserve pureness are not allowed in this tree. - * These are notably +=, -=, *=, /= and %= - */ - case class BinaryOp(op: String, lhs: Tree, rhs: Tree)(implicit val pos: Position) extends Tree - - case class ArrayConstr(items: List[Tree])(implicit val pos: Position) extends Tree - - case class ObjectConstr(fields: List[(PropertyName, Tree)])(implicit val pos: Position) extends Tree - - // Literals - - /** Marker for literals. Literals are always pure. */ - sealed trait Literal extends Tree - - case class Undefined()(implicit val pos: Position) extends Literal - - case class Null()(implicit val pos: Position) extends Literal - - case class BooleanLiteral(value: Boolean)(implicit val pos: Position) extends Literal - - case class IntLiteral(value: Int)(implicit val pos: Position) extends Literal - - case class DoubleLiteral(value: Double)(implicit val pos: Position) extends Literal - - case class StringLiteral(value: String)( - implicit val pos: Position) extends Literal with PropertyName { - override def name = value - } - - // Atomic expressions - - case class VarRef(ident: Ident, mutable: Boolean)(implicit val pos: Position) extends Tree - - case class This()(implicit val pos: Position) extends Tree - - case class Function(args: List[ParamDef], body: Tree)(implicit val pos: Position) extends Tree -} |