Merge pull request #89 from wisn/improve-comment

Improve parser for block-comment

spec/parsers/comment_spec.cr

@@ -0,0 +1,9 @@
+require "../spec_helper"
+
+describe "Block Comment" do
+  subject comment
+
+  expect_ok "/*\n    Block Comment\n */"
+  expect_ok "/*!\n * Block Comment\n */"
+  expect_ok "/* Block comment with EOF"
+end

src/parser.cr

@@ -32,6 +32,10 @@ module Mint
       @position += 1
     end
 
+    def eof? : Bool
+      @position == input.size
+    end
+
     # Helpers for raising errors
     # ----------------------------------------------------------------------------
 
@@ -130,6 +134,12 @@ module Mint
       raise error unless keyword(word)
     end
 
+    def keyword_ahead(word) : Bool
+      result = input[position, word.size]
+
+      result == word
+    end
+
     def keyword(word) : Bool
       result = input[position, word.size]
       if result == word

src/parsers/comment.cr

@@ -5,9 +5,9 @@ module Mint
         skip unless keyword "/*"
 
         value =
-          gather { consume_while(char != '*' || char == '\0') }.to_s
+          gather { consume_while((!(keyword_ahead "*/") || char == '\0') && !eof?) }.to_s
 
-        keyword! "*/", SyntaxError
+        keyword "*/"
         whitespace
 
         Ast::Comment.new(