From a7d912a33ae1f6857e5abbda1997bcf1fff2a83d Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Tue, 18 Dec 2018 19:30:01 -0800
Subject: Initial pass on updating syntax.

---
 parser.lua | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

(limited to 'parser.lua')

diff --git a/parser.lua b/parser.lua
index 5eee8ca..8cb96ea 100644
--- a/parser.lua
+++ b/parser.lua
@@ -3,6 +3,19 @@ local re = require('re')
 lpeg.setmaxstack(20000)
 local P, R, S, C, Cmt, Carg, Cc
 P, R, S, C, Cmt, Carg, Cc = lpeg.P, lpeg.R, lpeg.S, lpeg.C, lpeg.Cmt, lpeg.Carg, lpeg.Cc
+local foldr
+foldr = function(...)
+  local inner = select(1, ...)
+  for i = 2, select('#', ...) do
+    assert(inner.type)
+    local outer = select(i, ...)
+    table.insert(outer, 1, inner)
+    inner.start = outer.start
+    inner = outer
+  end
+  assert(inner.type)
+  return inner
+end
 local DEFS
 do
   local _with_0 = { }
@@ -17,6 +30,7 @@ do
   _with_0.Tree = function(t, userdata)
     return userdata.make_tree(t, userdata)
   end
+  _with_0.foldr = foldr
   DEFS = _with_0
 end
 setmetatable(DEFS, {
@@ -40,16 +54,14 @@ setmetatable(DEFS, {
     end
   end
 })
-local peg_tidier = re.compile([[file <- %nl* {~ (def/comment) (%nl+ (def/comment))* %nl* ~}
-def <- anon_def / captured_def
-anon_def <-
-    ({ident} (" "*) ":" {[^%nl]* (%nl+ " "+ [^%nl]*)*}) 
-    -> "%1 <- %2"
-captured_def <-
-    ({ident} (" "*) "(" {ident} ")" (" "*) ":" {[^%nl]* (%nl+ " "+ [^%nl]*)*})
-    -> "%1 <- ({| {:start:{}:} %3 {:stop:{}:} {:type: (''->'%2') :} |} %%userdata) -> Tree"
-ident <- [a-zA-Z_][a-zA-Z0-9_]*
-comment <- "--" [^%nl]*
+local peg_tidier = re.compile([[    file <- %nl* {~ (captured_def/line) (%nl+ (captured_def/line))* %nl* ~}
+    ident <- [a-zA-Z_][a-zA-Z0-9_]*
+    line <- [^%nl]*
+    captured_def <-
+        ({ident} (" "*) "(" {ident} ")" (" "*) "<-" {[^%nl]* (%nl+ " "+ [^%nl]*)*}) ->
+"%1 <- ({| {:type:''->'%2':} {:start:{}:}
+    %3
+    {:stop:{}:} |} %%userdata) -> Tree"
 ]])
 local make_parser
 make_parser = function(peg, make_tree)
-- 
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