using new modules

lib/parser/composed.rb

@@ -1,34 +1,33 @@
 require_relative "basic_types"
+require_relative "tokens"
 
 module Parser
+  
+  #obviously a work in progress !!
+  # We "compose" the parser from bits, divide and hopefully conquer
+   
   class Composed < Parslet::Parser
     include BasicTypes
+    include Tokens
     
     rule(:args) {
-      lparen >>
+      left_parenthesis >>
       ((expression.as(:arg) >> (comma >> expression.as(:arg)).repeat(0)).maybe).as(:args) >>
-      rparen
+      right_parenthesis
     }
 
     rule(:funcall) { name.as(:funcall) >> args }
 
-    rule(:expression) { cond | funcall | number | name }
+    rule(:expression) { cond | funcall | integer | name }
-
-    rule(:lparen) { str('(') >> space? }
-    rule(:rparen) { str(')') >> space? }
-    rule(:comma)  { str(',') >> space? }
 
     rule(:cond) {
-      if_kw >> lparen >> expression.as(:cond) >> rparen >>
+      if_kw >> left_parenthesis >> expression.as(:cond) >> right_parenthesis >>
         body.as(:if_true) >>
         else_kw >>
         body.as(:if_false)
     }
 
-    rule(:body)    { lbrace >> expression.as(:body) >> rbrace }
+    rule(:body)    { left_brace >> expression.as(:body) >> right_brace }
-    rule(:lbrace)  { str('{')    >> space? }
-    rule(:rbrace)  { str('}')    >> space? }
-    rule(:comma)   { str(',')    >> space? }
     rule(:if_kw)   { str('if')   >> space? }
     rule(:else_kw) { str('else') >> space? }
 
@@ -39,9 +38,9 @@ module Parser
     rule(:func_kw) { str('function') >> space? }
 
     rule(:params) {
-      lparen >>
+      left_parenthesis >>
         ((name.as(:param) >> (comma >> name.as(:param)).repeat(0)).maybe).as(:params) >>
-      rparen
+      right_parenthesis
     }
     rule(:root){ func.repeat(0) >> expression | expression | args }
   end