Issue To Be Solved

Currently the AST only retains comments for declarations if they are docstrings (/// line comments, a and /** block comments).

To be able to use the AST for formatting, it must retain also non-docstring comments.

Retain comments for:

• Declarations
• Statements
• Expressions

Definition of Done

• Add AST elements for comments:
  • Block comment
  • Line comment
• Add a leading/trailing comments property
  • Declarations: Line and block comments
  • Statements: Line and block comments
  • Expressions: Block comments
• Add comments to AST elements when parsing
  • Declarations
  • Statements
  • Expressions
• Tests