Making test case
Undo the changes of the var_declaration
Added escape cases and comment out unused tokens
Fix typo, map function in parser, refactor literals
Corrected typo and changes the definition of "Graph_Insert/Delete" according the johan's syntax
Add tests for Complex types
Merge branch 'parser_johan_syntax' of https://github.com/jhn/PLT into parser_johan_syntax
Add shell script for test
Add test for function "neighbors"
Add test for builtin function "map" and "find_many", "find_many" is not finished.
Statements
Merge branch 'parser_johan_syntax' of https://github.com/jhn/PLT into parser_johan_syntax
Add test for find_many when there is single node literal passed into the function
new definition for var_decl and statement
Removes conflicts of var_decl
modified the .gitignore
Remove constructor from expr
Add example for var_decl and statement
Removed constructor instantiation from var_decl and statement
Merge branch 'parser_johan_syntax' of https://github.com/jhn/PLT into parser_johan_syntax