Python make_lexer示例

示例#1

文件： mpasparse.py 项目： RafaPinzon93/mpascal

def sintactico():
    import mpaslex
    import sys
    lexer = mpaslex.make_lexer()
    parser = make_parser()
    program = parser.parse(open(sys.argv[1]).read())
    program.pprint()
    program.semantico()
    print "Succeded"
    return program

示例#2

文件： mpascheck.py 项目： Davesco/mpascal-1

def main():
  import mpasparse
  import sys
  from errors import subscribe_errors
  lexer = mpaslex.make_lexer()
  parser = mpasparse.make_parser()
  with subscribe_errors(lambda msg: sys.stdout.write(msg+"\n")):
    program = parser.parse(open(sys.argv[1]).read())
    # Revisa el programa
    check_program(program)

示例#3

文件： mpasparse.py 项目： Davesco/mpascal-1

    '''
    pass

def p_error(p):
    if p:
        error(p.lineno, "Error de sintaxis en el token '%s'" % p.value)
    else:
        error("EOF","Error de sintaxis, fin de entrada.")

def make_parser():
    parser = yacc.yacc()
    return parser


if __name__ == '__main__':
    import mpaslex
    import sys
    from errors import subscribe_errors
    lexer = mpaslex.make_lexer()
    parser = make_parser()
    with subscribe_errors(lambda msg: sys.stdout.write(msg+"\n")):
        program = parser.parse(open(sys.argv[1]).read())
    print "listo parte uno"
    dot = DotVisitor()
    dot.visit(program)
    print "listo visitado"
    dot.graph.write_png("grafo.png")

    #dump_tree(program)
    #for depth,node in flatten(program):
    #    print("%s%s" % (" "*(4*depth),node.__class__.__name__))

示例#4

文件： mpasparse.py 项目： pin3da/compiler

def make_parser(): 
    lexer = mpaslex.make_lexer()
    parser = yacc.yacc(debug=1)
    return parser