def parse(self, expr):
"""Uses the parser to convert a program to an AST
Always ignores the top-level Program AST
"""
tokens = lexer.tokenize(expr)
return parser.parse(tokens)[0]
def mark(self, expr):
"""Returns a marked AST for the specified expression"""
ast = parser.parse(lexer.tokenize(expr))
analyzers.markTailContexts(ast)
return ast[0]
