Better error message if position of tree isn't set.

DarkDimius · DarkDimius · commit 20010624fe07 · 2014-05-06T16:18:46.000+02:00
diff --git a/src/dotty/tools/dotc/typer/Typer.scala b/src/dotty/tools/dotc/typer/Typer.scala
@@ -956,7 +956,7 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit
   }
 
   def typed(tree: untpd.Tree, pt: Type = WildcardType)(implicit ctx: Context): Tree = /*>|>*/ ctx.traceIndented (i"typing $tree", typr, show = true) /*<|<*/ {
-    if (!tree.isEmpty && ctx.typerState.isGlobalCommittable) assert(tree.pos.exists, tree)
+    if (!tree.isEmpty && ctx.typerState.isGlobalCommittable) assert(tree.pos.exists, i"position not set for $tree")
     try adapt(typedUnadapted(tree, pt), pt)
     catch {
       case ex: CyclicReference => errorTree(tree, cyclicErrorMsg(ex))

Original file line number	Diff line number	Diff line change
`@@ -956,7 +956,7 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit`
`956`	`956`	`}`
`957`	`957`
`958`	`958`	`def typed(tree: untpd.Tree, pt: Type = WildcardType)(implicit ctx: Context): Tree = />\|>/ ctx.traceIndented (i"typing $tree", typr, show = true) /<\|</ {`
`959`		`- if (!tree.isEmpty && ctx.typerState.isGlobalCommittable) assert(tree.pos.exists, tree)`
	`959`	`+ if (!tree.isEmpty && ctx.typerState.isGlobalCommittable) assert(tree.pos.exists, i"position not set for $tree")`
`960`	`960`	`try adapt(typedUnadapted(tree, pt), pt)`
`961`	`961`	`catch {`
`962`	`962`	`case ex: CyclicReference => errorTree(tree, cyclicErrorMsg(ex))`