summaryrefslogtreecommitdiff
path: root/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Printers.scala
diff options
context:
space:
mode:
Diffstat (limited to 'examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Printers.scala')
-rw-r--r--examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Printers.scala420
1 files changed, 0 insertions, 420 deletions
diff --git a/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Printers.scala b/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Printers.scala
deleted file mode 100644
index 264c548..0000000
--- a/examples/scala-js/tools/shared/src/main/scala/scala/scalajs/tools/javascript/Printers.scala
+++ /dev/null
@@ -1,420 +0,0 @@
-/* __ *\
-** ________ ___ / / ___ __ ____ Scala.js tools **
-** / __/ __// _ | / / / _ | __ / // __/ (c) 2014, LAMP/EPFL **
-** __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \ http://scala-js.org/ **
-** /____/\___/_/ |_/____/_/ | |__/ /____/ **
-** |/____/ **
-\* */
-
-
-package scala.scalajs.tools.javascript
-
-import scala.annotation.switch
-
-import scala.util.control.Breaks
-
-import java.io.Writer
-import java.net.URI
-
-import scala.scalajs.ir
-import ir.Position
-import ir.Position.NoPosition
-import ir.Printers.IndentationManager
-import ir.Utils.escapeJS
-
-import Trees._
-
-import scala.scalajs.tools.sourcemap.SourceMapWriter
-
-object Printers {
-
- class JSTreePrinter(protected val out: Writer) extends IndentationManager {
- def printTopLevelTree(tree: Tree) {
- tree match {
- case Skip() =>
- // do not print anything
- case Block(stats) =>
- for (stat <- stats)
- printTopLevelTree(stat)
- case _ =>
- printStat(tree)
- if (shouldPrintSepAfterTree(tree))
- print(";")
- println()
- }
- }
-
- protected def shouldPrintSepAfterTree(tree: Tree): Boolean =
- !tree.isInstanceOf[DocComment]
-
- protected def printBlock(tree: Tree): Unit = {
- val trees = tree match {
- case Block(trees) => trees
- case _ => List(tree)
- }
- print("{"); indent(); println()
- printSeq(trees) { x =>
- printStat(x)
- } { x =>
- if (shouldPrintSepAfterTree(x))
- print(";")
- println()
- }
- undent(); println(); print("}")
- }
-
- protected def printSig(args: List[ParamDef]): Unit = {
- printRow(args, "(", ", ", ")")
- print(" ")
- }
-
- protected def printArgs(args: List[Tree]): Unit = {
- printRow(args, "(", ", ", ")")
- }
-
- def printStat(tree: Tree): Unit =
- printTree(tree, isStat = true)
-
- def printTree(tree: Tree, isStat: Boolean): Unit = {
- tree match {
- case EmptyTree =>
- print("<empty>")
-
- // Comments
-
- case DocComment(text) =>
- val lines = text.split("\n").toList
- if (lines.tail.isEmpty) {
- print("/** ", lines.head, " */")
- } else {
- print("/** ", lines.head); println()
- for (line <- lines.tail) {
- print(" * ", line); println()
- }
- print(" */")
- }
-
- // Definitions
-
- case VarDef(ident, mutable, rhs) =>
- print("var ", ident)
- if (rhs != EmptyTree)
- print(" = ", rhs)
-
- case ParamDef(ident, mutable) =>
- print(ident)
-
- // Control flow constructs
-
- case Skip() =>
- print("/*<skip>*/")
-
- case tree @ Block(trees) =>
- if (isStat)
- printBlock(tree)
- else
- printRow(trees, "(", ", ", ")")
-
- case Labeled(label, body) =>
- print(label, ": ")
- printBlock(body)
-
- case Assign(lhs, rhs) =>
- print(lhs, " = ", rhs)
-
- case Return(expr) =>
- print("return ", expr)
-
- case If(cond, thenp, elsep) =>
- if (isStat) {
- print("if (", cond, ") ")
- printBlock(thenp)
- elsep match {
- case Skip() => ()
- case If(_, _, _) =>
- print(" else ")
- printTree(elsep, isStat)
- case _ =>
- print(" else ")
- printBlock(elsep)
- }
- } else {
- print("(", cond, " ? ", thenp, " : ", elsep, ")")
- }
-
- case While(cond, body, label) =>
- if (label.isDefined)
- print(label.get, ": ")
- print("while (", cond, ") ")
- printBlock(body)
-
- case DoWhile(body, cond, label) =>
- if (label.isDefined)
- print(label.get, ": ")
- print("do ")
- printBlock(body)
- print(" while (", cond, ")")
-
- case Try(block, errVar, handler, finalizer) =>
- print("try ")
- printBlock(block)
- if (handler != EmptyTree) {
- print(" catch (", errVar, ") ")
- printBlock(handler)
- }
- if (finalizer != EmptyTree) {
- print(" finally ")
- printBlock(finalizer)
- }
-
- case Throw(expr) =>
- print("throw ", expr)
-
- case Break(label) =>
- if (label.isEmpty) print("break")
- else print("break ", label.get)
-
- case Continue(label) =>
- if (label.isEmpty) print("continue")
- else print("continue ", label.get)
-
- case Switch(selector, cases, default) =>
- print("switch (", selector, ") ")
- print("{"); indent
- for ((value, body) <- cases) {
- println()
- print("case ", value, ":"); indent; println()
- printStat(body)
- print(";")
- undent
- }
- if (default != EmptyTree) {
- println()
- print("default:"); indent; println()
- printStat(default)
- print(";")
- undent
- }
- undent; println(); print("}")
-
- case Debugger() =>
- print("debugger")
-
- // Expressions
-
- case New(ctor, args) =>
- def containsOnlySelectsFromAtom(tree: Tree): Boolean = tree match {
- case DotSelect(qual, _) => containsOnlySelectsFromAtom(qual)
- case BracketSelect(qual, _) => containsOnlySelectsFromAtom(qual)
- case VarRef(_, _) => true
- case This() => true
- case _ => false // in particular, Apply
- }
- if (containsOnlySelectsFromAtom(ctor))
- print("new ", ctor)
- else
- print("new (", ctor, ")")
- printArgs(args)
-
- case DotSelect(qualifier, item) =>
- print(qualifier, ".", item)
-
- case BracketSelect(qualifier, item) =>
- print(qualifier, "[", item, "]")
-
- case Apply(fun, args) =>
- print(fun)
- printArgs(args)
-
- case Delete(prop) =>
- print("delete ", prop)
-
- case UnaryOp("typeof", lhs) =>
- print("typeof(", lhs, ")")
-
- case UnaryOp(op, lhs) =>
- print("(", op, lhs, ")")
-
- case BinaryOp(op, lhs, rhs) =>
- print("(", lhs, " ", op, " ", rhs, ")")
-
- case ArrayConstr(items) =>
- printRow(items, "[", ", ", "]")
-
- case ObjectConstr(Nil) =>
- print("{}")
-
- case ObjectConstr(fields) =>
- print("{"); indent; println()
- printSeq(fields) {
- case (name, value) => print(name, ": ", value)
- } { _ =>
- print(",")
- println()
- }
- undent; println(); print("}")
-
- // Literals
-
- case Undefined() =>
- print("(void 0)")
-
- case Null() =>
- print("null")
-
- case BooleanLiteral(value) =>
- print(if (value) "true" else "false")
-
- case IntLiteral(value) =>
- if (value >= 0)
- print(value)
- else
- print("(", value, ")")
-
- case DoubleLiteral(value) =>
- if (value == 0 && 1 / value < 0)
- print("(-0)")
- else if (value >= 0)
- print(value)
- else
- print("(", value, ")")
-
- case StringLiteral(value) =>
- print("\"", escapeJS(value), "\"")
-
- // Atomic expressions
-
- case VarRef(ident, _) =>
- print(ident)
-
- case This() =>
- print("this")
-
- case Function(args, body) =>
- print("(function")
- printSig(args)
- printBlock(body)
- print(")")
-
- case _ =>
- print(s"<error, elem of class ${tree.getClass()}>")
- }
- }
-
- protected def printIdent(ident: Ident): Unit =
- printString(escapeJS(ident.name))
-
- def printOne(arg: Any): Unit = arg match {
- case tree: Tree =>
- printTree(tree, isStat = false)
- case ident: Ident =>
- printIdent(ident)
- case arg =>
- printString(if (arg == null) "null" else arg.toString)
- }
-
- protected def printString(s: String): Unit = {
- out.write(s)
- }
-
- // Make it public
- override def println(): Unit = super.println()
-
- def complete(): Unit = ()
- }
-
- class JSTreePrinterWithSourceMap(_out: Writer,
- sourceMap: SourceMapWriter) extends JSTreePrinter(_out) {
-
- private var column = 0
-
- override def printTree(tree: Tree, isStat: Boolean): Unit = {
- val pos = tree.pos
- if (pos.isDefined)
- sourceMap.startNode(column, pos)
-
- super.printTree(tree, isStat)
-
- if (pos.isDefined)
- sourceMap.endNode(column)
- }
-
- override protected def printIdent(ident: Ident): Unit = {
- if (ident.pos.isDefined)
- sourceMap.startNode(column, ident.pos, ident.originalName)
- super.printIdent(ident)
- if (ident.pos.isDefined)
- sourceMap.endNode(column)
- }
-
- override def println(): Unit = {
- super.println()
- sourceMap.nextLine()
- column = this.indentMargin
- }
-
- override protected def printString(s: String): Unit = {
- // assume no EOL char in s, and assume s only has ASCII characters
- super.printString(s)
- column += s.length()
- }
-
- override def complete(): Unit = {
- sourceMap.complete()
- super.complete()
- }
- }
-
- /** Prints a tree to find original locations based on line numbers.
- * @param untilLine last 0-based line the positions should be recorded for
- */
- class ReverseSourceMapPrinter(untilLine: Int)
- extends JSTreePrinter(ReverseSourceMapPrinter.NullWriter) {
-
- private val positions = Array.fill(untilLine+1)(NoPosition)
- private var curLine = 0
-
- private val doneBreak = new Breaks
-
- def apply(x: Int): Position = positions(x)
-
- def reverseSourceMap(tree: Tree): Unit = doneBreak.breakable {
- printTopLevelTree(tree)
- }
-
- override def printTree(tree: Tree, isStat: Boolean): Unit = {
- if (positions(curLine).isEmpty)
- positions(curLine) = tree.pos
-
- super.printTree(tree, isStat)
- }
-
- override protected def printIdent(ident: Ident): Unit = {
- if (positions(curLine).isEmpty)
- positions(curLine) = ident.pos
-
- super.printIdent(ident)
- }
-
- override def println(): Unit = {
- super.println()
- curLine += 1
- if (curLine > untilLine)
- doneBreak.break()
- }
-
- override protected def printString(s: String): Unit = {
- // assume no EOL char in s, and assume s only has ASCII characters
- // therefore, we fully ignore the string
- }
- }
-
- object ReverseSourceMapPrinter {
- private object NullWriter extends Writer {
- def close(): Unit = ()
- def flush(): Unit = ()
- def write(buf: Array[Char], off: Int, len: Int): Unit = ()
- }
- }
-
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-17 13:20:47 +0000