Merge branch 'type-classes' into upstream

tests/compile/tcompiles.nim

@@ -1,31 +1,26 @@
-discard """
-  output: '''obj has '==': false
-int has '==': true
-false
-true
-true
-no'''
-"""
-
 # test the new 'compiles' feature:
 
 template supports(opr, x: expr): bool {.immediate.} =
   compiles(opr(x)) or compiles(opr(x, x))
 
+template ok(x: expr): stmt =
+  static: assert(x)
+
+template no(x: expr): stmt =
+  static: assert(not x)
+
 type
   TObj = object
 
 var
   myObj {.compileTime.}: TObj
 
-echo "obj has '==': ", supports(`==`, myObj)
-echo "int has '==': ", supports(`==`, 45)
+ok supports(`==`, myObj)
+ok supports(`==`, 45)
 
-echo supports(`++`, 34)
-echo supports(`not`, true)
-echo supports(`+`, 34)
+no supports(`++`, 34)
+ok supports(`not`, true)
+ok supports(`+`, 34)
+
+no compiles(4+5.0 * "hallo")
 
-when compiles(4+5.0 * "hallo"):
-  echo "yes"
-else:
-  echo "no"

tests/reject/tnoop.nim

@@ -3,11 +3,10 @@ discard """
   line: 11
   errormsg: "expression \'a()\' cannot be called"
 """
-# Tests the new check in the semantic pass
-
-var
-  a: int
-
-a()  #ERROR_MSG expression 'a()' cannot be called
+# Tests the new check in the semantic pass
 
+var
+  a: int
+
+a()  #ERROR_MSG expression 'a()' cannot be called
 

tests/reject/topaque.nim

@@ -1,18 +1,18 @@
 discard """
   file: "topaque.nim"
   line: 16
-  errormsg: "undeclared field: \'buffer\'"
+  errormsg: "undeclared identifier: \'buffer\'"
 """
-# Test the new opaque types
-
-import 
-  mopaque
-  
-var
-  L: TLexer
-  
-L.filename = "ha"
-L.line = 34
-L.buffer[0] = '\0' #ERROR_MSG undeclared field: 'buffer'
+# Test the new opaque types
+
+import 
+  mopaque
+  
+var
+  L: TLexer
+  
+L.filename = "ha"
+L.line = 34
+L.buffer[0] = '\0' #ERROR_MSG undeclared field: 'buffer'
 
 

tests/reject/twrongtupleaccess.nim

@@ -1,12 +1,10 @@
 discard """
   file: "twrongtupleaccess.nim"
   line: 9
-  errormsg: "undeclared field: \'setBLAH\'"
+  errormsg: "undeclared identifier: \'setBLAH\'"
 """
 # Bugfix
 
 var v = (5.0, 10.0)
 v.setBLAH(10)
 
-
-