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

smnp/ast/node/expression.py

@@ -0,0 +1,65 @@
+from smnp.ast.node.asterisk import AsteriskNode
+from smnp.ast.node.model import Node
+from smnp.ast.node.none import NoneNode
+from smnp.ast.node.statement import StatementNode
+from smnp.ast.parser import Parser
+from smnp.token.type import TokenType
+
+
+class ExpressionNode(Node):
+    def __init__(self, pos):
+        super().__init__(pos, [NoneNode()])
+
+    @property
+    def value(self):
+        return self[0]
+
+
+    @value.setter
+    def value(self, v):
+        self[0] = v
+
+
+    @classmethod
+    def withValue(cls, val, pos):
+        node = cls(pos)
+        node.value = val
+        return node
+
+    @classmethod
+    def _parse(cls, input):
+        return Parser.oneOf(
+            cls._asteriskParser(),
+            cls._expressionParser(),
+        )(input)
+
+    @classmethod
+    def _asteriskParser(cls):
+        def createNode(iterator, asterisk, statement):
+            node = AsteriskNode(asterisk.pos)
+            node.iterator = iterator
+            node.statement = statement
+            return node
+
+        return Parser.allOf(
+            cls._expressionParser(),
+            Parser.terminalParser(TokenType.ASTERISK),
+            StatementNode.parse,
+            createNode=createNode
+        )
+
+    @classmethod
+    def _expressionParser(cls):
+        from smnp.ast.node.integer import IntegerLiteralNode
+        from smnp.ast.node.string import StringLiteralNode
+        from smnp.ast.node.note import NoteLiteralNode
+        from smnp.ast.node.identifier import IdentifierNode
+        from smnp.ast.node.list import ListNode
+
+        return Parser.oneOf(
+            IntegerLiteralNode.parse,
+            StringLiteralNode.parse,
+            NoteLiteralNode.parse,
+            IdentifierNode.parse,
+            ListNode.parse
+        )