Extract properties block parser to file

src/parser/utils.nim

@@ -0,0 +1,21 @@
+import std/sugar
+import std/collections/sequtils
+import ./parser
+import results
+
+type StringBuilderT* = string
+type StringBuilder* = Builder[StringBuilderT]
+type StringBuilderResult* = BuilderResult[StringBuilderT]
+
+proc stringConcat*(typeInfo: StringBuilderT):
+                  (seq[ParserToken], seq[StringBuilderT]) -> seq[StringBuilderT] =
+
+  return proc(xs: seq[ParserToken], ys: seq[StringBuilderT]): seq[StringBuilderT] =
+    return ys & xs.foldl(a & b.tokenStringValue(), typeInfo)
+
+proc initStringBuilder*(str: string): StringBuilderResult =
+  StringBuilderResult
+  .ok(StringBuilder((
+    parser: initParser(str),
+    tree: newSeq[StringBuilderT](),
+  )))