Typescript improvements (#316)

* Consistency fixes for javascript/main.rb.

* Consistency fixes for typescript/main.rb

* Brought over 99% of the filter improvements from javascript to typescript.

I didn't bring over the directives filter as I don't see that in
typescript (yet).

Otherwise, the files are now nearly identical. This is begging for one
to be a subclass of the other w/ just the name/extension differences.

Author: zenspider

lib/cc/engine/analyzers/javascript/main.rb

@@ -14,13 +14,13 @@ class Main < CC::Engine::Analyzers::Base
           LANGUAGE = "javascript"
           DEFAULT_MASS_THRESHOLD = 45
           DEFAULT_FILTERS = [
-            "(directives (Directive (value (DirectiveLiteral ___))))",
+            "(directives (Directive (value (DirectiveLiteral ___))))".freeze,
             "(ImportDeclaration ___)".freeze,
             "(VariableDeclarator _ (init (CallExpression (_ (Identifier require)) ___)))".freeze,
           ].freeze
           DEFAULT_POST_FILTERS = [
-            "(NUKE ___)",
-            "(Program _ ___)",
+            "(NUKE ___)".freeze,
+            "(Program _ ___)".freeze,
           ].freeze
           POINTS_PER_OVERAGE = 30_000
           REQUEST_PATH = "/javascript".freeze

lib/cc/engine/analyzers/typescript/main.rb

@@ -10,20 +10,39 @@ class Main < CC::Engine::Analyzers::Base
           PATTERNS = [
             "**/*.ts",
             "**/*.tsx",
-          ]
+          ].freeze
           LANGUAGE = "typescript"
           DEFAULT_MASS_THRESHOLD = 45
           DEFAULT_FILTERS = [
-            "(ImportDeclaration ___)",
-            "(VariableDeclarator _ (init (CallExpression (_ (Identifier require)) ___)))",
-          ]
+            "(ImportDeclaration ___)".freeze,
+            "(VariableDeclarator _ (init (CallExpression (_ (Identifier require)) ___)))".freeze,
+          ].freeze
+          DEFAULT_POST_FILTERS = [
+            "(NUKE ___)".freeze,
+            "(Program _ ___)".freeze,
+          ].freeze
           POINTS_PER_OVERAGE = 30_000
-          REQUEST_PATH = "/typescript"
+          REQUEST_PATH = "/typescript".freeze
 
           def use_sexp_lines?
             false
           end
 
+          ##
+          # Transform sexp as such:
+          #
+          #               s(:Program, :module, s(:body, ... ))
+          #   => s(:NUKE, s(:Program, :module, s(:NUKE, ... )))
+
+          def transform_sexp(sexp)
+            return sexp unless sexp.body
+
+            sexp.body.sexp_type = :NUKE # negate top level body
+            sexp = s(:NUKE, sexp) # wrap with extra node to force full process
+
+            sexp
+          end
+
           private
 
           def process_file(file)
@@ -33,6 +52,10 @@ def process_file(file)
           def default_filters
             DEFAULT_FILTERS.map { |filter| Sexp::Matcher.parse filter }
           end
+
+          def default_post_filters
+            DEFAULT_POST_FILTERS.map { |filter| Sexp::Matcher.parse filter }
+          end
         end
       end
     end