fix a few more issues with pp

FrontEnd/Lib/test.cw

@@ -80,8 +80,7 @@ Both must have derivable types as we use `auto`"""
     (mlet $a_val auto $a_expr)
     (AssertEq# (len $e_val) (len $a_val))
     (for $i 0 (len $a_val) 1 :
-        (AssertApproxEq# (^ (pinc (front $e_val) $i)) (^ (pinc (front $a_val) $i))))
-    $epsilon)
+        (AssertApproxEq# (^ (pinc (front $e_val) $i)) (^ (pinc (front $a_val) $i)) $epsilon)))
 
 @doc ""
 @pub (macro AssertTrue# STMT_LIST [(mparam $e_expr EXPR)] [] :

FrontEnd/pp.py

@@ -503,8 +503,6 @@ def EmitTokensCodeBlock(ts: TS, stmts):
     ts.EmitColonEnd(beg_colon)
 
 
-
-
 def TokensExprIndex(ts: TS, node: cwast.ExprIndex):
     EmitTokens(ts, node.container)
     beg_paren = ts.EmitBegParen("[")
@@ -714,12 +712,16 @@ def EmitTokensStatement(ts: TS, n):
         EmitTokensCodeBlock(ts, n.body_for)
     elif isinstance(n, cwast.MacroInvoke):
         _TokensStmtMacroInvoke(ts, n)
+    elif isinstance(n, cwast.MacroId):
+        ts.EmitAttr(n.name)
+        ts.EmitNewline()
     else:
         assert False, f"unexpected stmt node {n}"
     #
     if not ts.LastTokenIsCodeBlock():
         ts.EmitNewline()
 
+
 def EmitTokensExprMacroBlock(ts: TS, stmts):
     beg_colon = ts.EmitColonBeg()
     for child in stmts:
@@ -730,6 +732,7 @@ def EmitTokensExprMacroBlock(ts: TS, stmts):
             assert False
     ts.EmitColonEnd(beg_colon)
 
+
 def _EmitTokensToplevel(ts: TS, node):
     # extra newline before every toplevel stanza
     ts.EmitNewline()
@@ -746,10 +749,12 @@ def _EmitTokensToplevel(ts: TS, node):
         ts.EmitStmtEnd(beg)
     elif isinstance(node, cwast.Import):
         beg = ts.EmitStmtBeg("import")
-        ts.EmitName(node.name)
         if node.alias:
-            ts.EmitBinOp("as")
             ts.EmitAttr(node.alias)
+            ts.EmitBinOp("=")
+        ts.EmitName(node.name)
+        if node.args_mod:
+            TokensParenList(ts, node.args_mod)
         ts.EmitStmtEnd(beg)
     elif isinstance(node, cwast.DefType):
         beg = ts.EmitStmtBeg("type")