From ba8c57984bc2e947c1f8a1c22c3df398188959a5 Mon Sep 17 00:00:00 2001
From: Ganesh Viswanathan <dev@genotrance.com>
Date: Mon, 3 Dec 2018 16:17:13 -0600
Subject: Support for unsigned, function params with pointers

---
 nimterop/ast.nim     |  8 +++++++-
 nimterop/getters.nim |  7 ++++++-
 nimterop/grammar.nim | 35 +++++++++++++++++++++++++++++++----
 3 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/nimterop/ast.nim b/nimterop/ast.nim
index cce07c3..ca4a563 100644
--- a/nimterop/ast.nim
+++ b/nimterop/ast.nim
@@ -12,6 +12,7 @@ const gAtoms = @[
   "number_literal",
   "preproc_arg",
   "primitive_type",
+  "sized_type_specifier",
   "type_identifier"
 ]
 
@@ -21,7 +22,10 @@ proc saveNodeData(node: TSNode): bool =
     var
       val = node.getNodeVal()
 
-    if name == "primitive_type":
+    if name == "primitive_type" and node.tsNodeParent.tsNodeType() == "sized_type_specifier":
+      return true
+
+    if name in ["primitive_type", "sized_type_specifier"]:
       val = val.getType()
 
     if node.tsNodeParent().tsNodeType() == "pointer_declarator":
@@ -36,6 +40,8 @@ proc searchAstForNode(ast: ref Ast, node: TSNode): bool =
   let
     childNames = node.getTSNodeNamedChildNames().join()
 
+  if ast.isNil:
+    return
   if ast.children.len != 0:
     let
       rstr = ast.getRegexForAstChildren()
diff --git a/nimterop/getters.nim b/nimterop/getters.nim
index ff8a361..02732e5 100644
--- a/nimterop/getters.nim
+++ b/nimterop/getters.nim
@@ -13,7 +13,12 @@ proc getIdentifier*(str: string): string =
   result = str.strip(chars={'_'})
 
 proc getType*(str: string): string =
-  result = str.strip(chars={'_'}).replace(re"([u]?int[\d]+)_t", "$1").replace(re"^void$", "object")
+  if str == "void":
+    return "object"
+
+  result = str.strip(chars={'_'}).
+    replace("unsigned ", "u").
+    replace(re"([u]?int[\d]+)_t", "$1")
 
 proc getLit*(str: string): string =
   if str.contains(re"^[\-]?[\d]+$") or
diff --git a/nimterop/grammar.nim b/nimterop/grammar.nim
index 4e819d9..1fc45c2 100644
--- a/nimterop/grammar.nim
+++ b/nimterop/grammar.nim
@@ -15,7 +15,7 @@ proc initGrammar() =
         name = gStateRT.data[0].val.getIdentifier()
         val = gStateRT.data[1].val
 
-      if name notin gStateRT.consts:
+      if name notin gStateRT.consts and val.nBl:
         gStateRT.consts.add(name)
         gStateRT.constStr &= &"  {name}* = {val}\n"
   ))
@@ -27,6 +27,9 @@ proc initGrammar() =
   gStateRT.grammar.add(("""
    (type_definition
     (primitive_type|type_identifier?)
+    (sized_type_specifier?
+     (primitive_type)
+    )
     (struct_specifier?
      (type_identifier)
     )
@@ -66,6 +69,9 @@ proc initGrammar() =
     (field_declaration_list
      (field_declaration+
       (primitive_type|type_identifier?)
+      (sized_type_specifier?
+       (primitive_type)
+      )
       (struct_specifier?
        (type_identifier)
       )
@@ -88,6 +94,9 @@ proc initGrammar() =
      (field_declaration_list
       (field_declaration+
        (primitive_type|type_identifier?)
+       (sized_type_specifier?
+        (primitive_type)
+       )
        (struct_specifier?
         (type_identifier)
        )
@@ -163,6 +172,9 @@ proc initGrammar() =
   gStateRT.grammar.add(("""
    (declaration
     (primitive_type|type_identifier?)
+    (sized_type_specifier?
+     (primitive_type)
+    )
     (struct_specifier?
      (type_identifier)
     )
@@ -171,13 +183,19 @@ proc initGrammar() =
      (parameter_list
       (parameter_declaration*
        (primitive_type|type_identifier?)
+       (sized_type_specifier?
+        (primitive_type)
+       )
        (struct_specifier?
         (type_identifier)
        )
        (enum_specifier?
         (type_identifier)
        )
-       (identifier)
+       (identifier?)
+       (pointer_declarator?
+        (identifier)
+       )
       )
      )
     )
@@ -187,13 +205,19 @@ proc initGrammar() =
       (parameter_list
        (parameter_declaration*
         (primitive_type|type_identifier?)
+        (sized_type_specifier?
+         (primitive_type)
+        )
         (struct_specifier?
          (type_identifier)
         )
         (enum_specifier?
          (type_identifier)
         )
-        (identifier)
+        (identifier?)
+        (pointer_declarator?
+         (identifier)
+        )
        )
       )
      )
@@ -220,7 +244,10 @@ proc initGrammar() =
         if pout.len != 0 and pout[^1] == ',':
           pout = pout[0 .. ^2]
 
-        gStateRT.procStr &= &"proc {fnname}({pout}): {ftyp} {{.importc: \"{fname}\", header: {gStateRT.currentHeader}.}}\n"
+        if ftyp != "object":
+          gStateRT.procStr &= &"proc {fnname}({pout}): {ftyp} {{.importc: \"{fname}\", header: {gStateRT.currentHeader}.}}\n"
+        else:
+          gStateRT.procStr &= &"proc {fnname}({pout}) {{.importc: \"{fname}\", header: {gStateRT.currentHeader}.}}\n"
 
   ))
 
-- 
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