1 files changed, 51 insertions, 0 deletions
diff --git a/scalatex/scalaParser/src/main/scala/scalaParser/syntax/Basic.scala b/scalatex/scalaParser/src/main/scala/scalaParser/syntax/Basic.scala
new file mode 100644
index 0000000..8d3232a
--- /dev/null
+++ b/scalatex/scalaParser/src/main/scala/scalaParser/syntax/Basic.scala
@@ -0,0 +1,51 @@
+package scalaParser
+package syntax
+import acyclic.file
+import org.parboiled2._
+
+trait Basic { self: Parser =>
+  object Basic{
+    def UnicodeExcape = rule { "\\u" ~ 4.times(HexDigit) }
+
+
+    //Numbers and digits
+    def HexDigit = rule { Digit | "a" - "f" | "A" - "Z" }
+    def Digit = rule { "0" | NonZeroDigit }
+    def NonZeroDigit = rule { "1" - "9" }
+    def HexNumeral = rule { "0x" ~ oneOrMore(HexDigit) }
+    def DecimalNumeral = rule(oneOrMore(Digit))
+    def ExponentPart = rule { anyOf("Ee") ~ optional(anyOf("+-")) ~ oneOrMore(Digit) }
+    def FloatType = rule { anyOf("FfDd") }
+
+    def Parentheses = rule { "(" | ")" | "[" | "]" | "{" | "}" }
+    def DelimiterChar = rule { "'" | "\"" | "." | ";" | "," }
+
+    def WhitespaceChar = rule { "\u0020" | "\u0009" }
+    def Newline = rule { "\r\n" | "\n" }
+    def Semi = rule { ';' | oneOrMore(Newline) }
+    def OperatorChar = rule {
+      anyOf("""!#$%&*+-/:<=>?@\^|~""") |
+      CharPredicate.from(_.getType match {
+        case Character.OTHER_SYMBOL | Character.MATH_SYMBOL => true; case _ => false
+      })
+    }
+    def Letter = rule { Upper | Lower | CharPredicate.from(c => c.isLetter | c.isDigit) }
+    def Lower = rule { "a" - "z" | "$" | "_" | CharPredicate.from(_.isLower) }
+    def Upper = rule { "A" - "Z" | CharPredicate.from(_.isUpper) }
+  }
+  /**
+   * Most keywords don't just require the correct characters to match,
+   * they have to ensure that subsequent characters *don't* match in
+   * order for it to be a keyword. This enforces that rule for key-words
+   * (W) and key-operators (O) which have different non-match criteria.
+   */
+  object Key {
+    def W(s: String) = rule {
+      str(s) ~ !(Basic.Letter | Basic.Digit)
+    }
+
+    def O(s: String) = rule {
+      str(s) ~ !Basic.OperatorChar
+    }
+  }
+}