Merge pull request #15811 from som-snytt/issue/15808-repl-load-truncated

Author: dwijnand

compiler/src/dotty/tools/repl/ParseResult.scala

@@ -139,7 +139,7 @@ object ParseResult {
     Settings.command -> (arg => Settings(arg)),
   )
 
-  def apply(source: SourceFile)(implicit state: State): ParseResult = {
+  def apply(source: SourceFile)(using state: State): ParseResult = {
     val sourceCode = source.content().mkString
     sourceCode match {
       case "" => Newline
@@ -167,8 +167,14 @@ object ParseResult {
     }
   }
 
-  def apply(sourceCode: String)(implicit state: State): ParseResult =
-    apply(SourceFile.virtual(str.REPL_SESSION_LINE + (state.objectIndex + 1), sourceCode, maybeIncomplete = true))
+  def apply(sourceCode: String)(using state: State): ParseResult =
+    maybeIncomplete(sourceCode, maybeIncomplete = true)
+
+  def complete(sourceCode: String)(using state: State): ParseResult =
+    maybeIncomplete(sourceCode, maybeIncomplete = false)
+
+  private def maybeIncomplete(sourceCode: String, maybeIncomplete: Boolean)(using state: State): ParseResult =
+    apply(SourceFile.virtual(str.REPL_SESSION_LINE + (state.objectIndex + 1), sourceCode, maybeIncomplete = maybeIncomplete))
 
   /** Check if the input is incomplete.
    *

compiler/src/dotty/tools/repl/ReplCompiler.scala

@@ -166,7 +166,7 @@ class ReplCompiler extends Compiler:
         PackageDef(Ident(nme.EMPTY_PACKAGE), List(wrapper))
       }
 
-      ParseResult(sourceFile)(state) match {
+      ParseResult(sourceFile) match {
         case Parsed(_, trees, _) =>
           wrap(trees).result
         case SyntaxErrors(_, reported, trees) =>

compiler/src/dotty/tools/repl/ReplDriver.scala

@@ -146,15 +146,15 @@ class ReplDriver(settings: Array[String],
          |Type in expressions for evaluation. Or try :help.""".stripMargin)
 
     /** Blockingly read a line, getting back a parse result */
-    def readLine(state: State): ParseResult = {
+    def readLine()(using state: State): ParseResult = {
       val completer: Completer = { (_, line, candidates) =>
         val comps = completions(line.cursor, line.line, state)
         candidates.addAll(comps.asJava)
       }
       given Context = state.context
       try {
         val line = terminal.readLine(completer)
-        ParseResult(line)(state)
+        ParseResult(line)
       } catch {
         case _: EndOfFileException |
             _: UserInterruptException => // Ctrl+D or Ctrl+C
@@ -163,7 +163,7 @@ class ReplDriver(settings: Array[String],
     }
 
     @tailrec def loop(using state: State)(): State = {
-      val res = readLine(state)
+      val res = readLine()
       if (res == Quit) state
       else loop(using interpret(res))()
     }
@@ -173,8 +173,7 @@ class ReplDriver(settings: Array[String],
   }
 
   final def run(input: String)(using state: State): State = runBody {
-    val parsed = ParseResult(input)(state)
-    interpret(parsed)
+    interpret(ParseResult.complete(input))
   }
 
   private def runBody(body: => State): State = rendering.classLoader()(using rootCtx).asContext(withRedirectedOutput(body))

compiler/test/dotty/tools/repl/LoadTests.scala

@@ -47,6 +47,19 @@ class LoadTests extends ReplTest {
                  |""".stripMargin
   )
 
+  @Test def truncated = loadTest(
+    file    = """|def f: Unit =
+                 |  for i <- 1 to 2
+                 |  do
+                 |    println(i)""".stripMargin, // was: unindent expected, but eof found
+    defs    = """|def f: Unit
+                 |""".stripMargin,
+    runCode = """f""",
+    output  = """|1
+                 |2
+                 |""".stripMargin
+  )
+
   def loadTest(file: String, defs: String, runCode: String, output: String) =
     eval(s":load ${writeFile(file)}") andThen {
       assertMultiLineEquals(defs, storedOutput())