lib/hemingway/math/math.rb in hemingway-0.0.2 vs lib/hemingway/math/math.rb in hemingway-0.0.3

@@ -14,11 +14,11 @@
     module Math0
       def math_start
         elements[0]
       end
 
-      def symbol
+      def content
         elements[1]
       end
 
       def math_end
         elements[2]
@@ -38,15 +38,27 @@
 
       i0, s0 = index, []
       r1 = _nt_math_start
       s0 << r1
       if r1
-        r2 = _nt_symbol
+        i2 = index
+        r3 = _nt_symbol
+        if r3
+          r2 = r3
+        else
+          r4 = _nt_exponent
+          if r4
+            r2 = r4
+          else
+            @index = i2
+            r2 = nil
+          end
+        end
         s0 << r2
         if r2
-          r3 = _nt_math_end
-          s0 << r3
+          r5 = _nt_math_end
+          s0 << r5
         end
       end
       if s0.last
         r0 = instantiate_node(MathNode,input, i0...index, s0)
         r0.extend(Math0)
@@ -72,9 +84,81 @@
       end
 
       r0 = _nt_math_symbol
 
       node_cache[:symbol][start_index] = r0
+
+      r0
+    end
+
+    module Exponent0
+      def value
+        elements[1]
+      end
+
+    end
+
+    def _nt_exponent
+      start_index = index
+      if node_cache[:exponent].has_key?(index)
+        cached = node_cache[:exponent][index]
+        if cached
+          cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
+          @index = cached.interval.end
+        end
+        return cached
+      end
+
+      i0, s0 = index, []
+      if has_terminal?("^{", false, index)
+        r1 = instantiate_node(SyntaxNode,input, index...(index + 2))
+        @index += 2
+      else
+        terminal_parse_failure("^{")
+        r1 = nil
+      end
+      s0 << r1
+      if r1
+        i2 = index
+        if has_terminal?("\\circ", false, index)
+          r3 = instantiate_node(SyntaxNode,input, index...(index + 5))
+          @index += 5
+        else
+          terminal_parse_failure("\\circ")
+          r3 = nil
+        end
+        if r3
+          r2 = r3
+        else
+          r4 = _nt_text
+          if r4
+            r2 = r4
+          else
+            @index = i2
+            r2 = nil
+          end
+        end
+        s0 << r2
+        if r2
+          if has_terminal?("}", false, index)
+            r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
+            @index += 1
+          else
+            terminal_parse_failure("}")
+            r5 = nil
+          end
+          s0 << r5
+        end
+      end
+      if s0.last
+        r0 = instantiate_node(ExponentNode,input, i0...index, s0)
+        r0.extend(Exponent0)
+      else
+        @index = i0
+        r0 = nil
+      end
+
+      node_cache[:exponent][start_index] = r0
 
       r0
     end
 
     def _nt_math_start
\ No newline at end of file