Remove old parser and move new parser to 'ast' package

smnp/ast/node/program.py

@@ -1,6 +1,32 @@
-from smnp.ast.node.model import Node
+from smnp.ast.node.expression import ExpressionNode
+from smnp.ast.node.extend import ExtendNode
+from smnp.ast.node.function import FunctionDefinitionNode
+from smnp.ast.node.imports import ImportNode
+from smnp.ast.node.model import Node, ParseResult
+from smnp.ast.node.statement import StatementNode
+from smnp.ast.parser import Parser
+from smnp.error.syntax import SyntaxException
 
 
 class Program(Node):
     def __init__(self):
-        Node.__init__(self, None, (-1, -1))
+        super().__init__((-1, -1))
+
+    @classmethod
+    def _parse(cls, input):
+        def parseToken(input):
+            return Parser.oneOf(
+                FunctionDefinitionNode.parse,
+                ExtendNode.parse,
+                ExpressionNode.parse,
+                ImportNode.parse,
+                StatementNode.parse,
+                exception = SyntaxException(f"Unknown statement: {input.current().pos}")
+            )(input)
+
+        root = Program()
+        while input.hasCurrent():
+            result = parseToken(input)
+            if result.result:
+                root.append(result.node)
+        return ParseResult.OK(root)