Add IterGen parser

Author: shubhamugare

syncode/parsers/__init__.py

@@ -1,12 +1,18 @@
 import os
 from syncode.parsers import incremental_parser
+from syncode.parsers.itergen_parser import IGParser
 from syncode.parsers.python_parser import PythonIncrementalParser, PythonIndenter
 from syncode.parsers.go_parser import GoIncrementalParser
 import syncode.common as common
 from syncode.larkm.lark import Lark
 from syncode.parsers.grammars.grammar import Grammar
 
-def create_parser(grammar: Grammar, parser='lalr', **kwargs) -> incremental_parser.IncrementalParser:   
+def create_parser(
+          grammar: Grammar, 
+          parser='lalr', 
+          use_symbol_pos_map=False,
+          **kwargs
+        ) -> incremental_parser.IncrementalParser:   
         """ 
         Creates an incremental parser for the given grammar. The parser is cached for future use.
         parser (str, optional): The type of parser to use. Can be 'lalr' or 'lr'. Defaults to 'lalr'.        
@@ -16,6 +22,10 @@ def create_parser(grammar: Grammar, parser='lalr', **kwargs) -> incremental_pars
         cache_filename = parser_cache_dir + f'{grammar}_{parser}_{grammar.hash()}_parser.pkl'
         os.makedirs(os.path.dirname(parser_cache_dir), exist_ok=True)
 
+        # First check if we should use the IGParser with symbol position map
+        if use_symbol_pos_map:
+            return IGParser(base_parser, **kwargs)
+
         if grammar.name == 'python':
             indenter = PythonIndenter()
 
@@ -27,6 +37,7 @@ def create_parser(grammar: Grammar, parser='lalr', **kwargs) -> incremental_pars
             return GoIncrementalParser(base_parser, **kwargs)
         return incremental_parser.IncrementalParser(base_parser, **kwargs)
 
+
 def create_base_parser(grammar, parser='lalr', indenter=None, cache_filename=None):
     base_parser = Lark( # This is the standard Lark parser
                         grammar.ebnf,