parse_result.rb in prism-1.0.0

- old
+ new

@@ -8,11 +8,15 @@
     # Create a new source object with the given source code. This method should
     # be used instead of `new` and it will return either a `Source` or a
     # specialized and more performant `ASCIISource` if no multibyte characters
     # are present in the source code.
     def self.for(source, start_line = 1, offsets = [])
-      source.ascii_only? ? ASCIISource.new(source, start_line, offsets): new(source, start_line, offsets)
+      if source.ascii_only?
+        ASCIISource.new(source, start_line, offsets)
+      else
+        new(source, start_line, offsets)
+      end
     end
 
     # The source code that this source object represents.
     attr_reader :source
 
@@ -85,11 +89,16 @@
     # This method is tested with UTF-8, UTF-16, and UTF-32. If there is the
     # concept of code units that differs from the number of characters in other
     # encodings, it is not captured here.
     def code_units_offset(byte_offset, encoding)
       byteslice = (source.byteslice(0, byte_offset) or raise).encode(encoding)
-      (encoding == Encoding::UTF_16LE || encoding == Encoding::UTF_16BE) ? (byteslice.bytesize / 2) : byteslice.length
+
+      if encoding == Encoding::UTF_16LE || encoding == Encoding::UTF_16BE
+        byteslice.bytesize / 2
+      else
+        byteslice.length
+      end
     end
 
     # Returns the column number in code units for the given encoding for the
     # given byte offset.
     def code_units_column(byte_offset, encoding)
@@ -573,13 +582,15 @@
   end
 
   # This is a result specific to the `parse` and `parse_file` methods.
   class ParseResult < Result
     autoload :Comments, "prism/parse_result/comments"
+    autoload :Errors, "prism/parse_result/errors"
     autoload :Newlines, "prism/parse_result/newlines"
 
     private_constant :Comments
+    private_constant :Errors
     private_constant :Newlines
 
     # The syntax tree that was parsed from the source code.
     attr_reader :value
 
@@ -602,10 +613,16 @@
     # Walk the tree and mark nodes that are on a new line, loosely emulating
     # the behavior of CRuby's `:line` tracepoint event.
     def mark_newlines!
       value.accept(Newlines.new(source.offsets.size)) # steep:ignore
     end
+
+    # Returns a string representation of the syntax tree with the errors
+    # displayed inline.
+    def errors_format
+      Errors.new(self).format
+    end
   end
 
   # This is a result specific to the `lex` and `lex_file` methods.
   class LexResult < Result
     # The list of tokens that were parsed from the source code.
@@ -691,8 +708,14 @@
     # Returns true if the given other token is equal to this token.
     def ==(other)
       Token === other &&
         other.type == type &&
         other.value == value
+    end
+
+    # Returns a string representation of this token.
+    def inspect
+      location
+      super
     end
   end
 end