feat(runner.py): replace api with runner and runner class

rajinipp/runner.py

@@ -0,0 +1,59 @@
+"""
+# rajinipp python runner.
+The rajinipp runner exposes the rajinipp interpreter
+to python scripts.
+"""
+
+import os
+import sys
+from pathlib import Path
+
+from loguru import logger
+
+from .lexer import Lexer
+from .parser.parser import Parser
+from .utils import read_yml
+
+
+class RppRunner:
+    """
+    The RppRunner handles the execution of rajini++ code.
+    """
+
+    def __init__(self) -> None:
+        yml_path = os.path.join(Path(__file__).parent, "token.yml")
+        self.tokens_dict = read_yml(yml_path)
+
+    def tokenize(self, code: str):
+        """
+        tokenize tokenizes the input code.
+
+        Args:
+            code (str): the rajini++ code to tokenize.
+
+        Returns:
+            LexerStream: a generator of the tokens.
+        """
+        lexer = Lexer(self.tokens_dict).get_lexer()
+        tokens = lexer.lex(code)
+        return tokens
+
+    def exec(self, code: str, log_level: str = "ERROR"):
+        """
+        exec executes a copmplete rajini++ program.
+
+        Args:
+            code (str): the rajini++ program to execute.
+            log_level (str, optional): log level. Defaults to "ERROR".
+        """
+        logger.remove()
+        logger.add(sys.stderr, level=log_level)
+
+        parser = Parser(list(self.tokens_dict.keys()))
+        parser.parse()
+
+        parser = parser.get_parser()
+
+        parsed_tokens = parser.parse(self.tokenize(code))
+
+        parsed_tokens.eval()