circuitpython/py/parsehelper.c

95 lines
3.5 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// these functions are separate from parse.c to keep parser independent of mp_obj_t
#include <stdint.h>
#include <stdio.h>
#include "mpconfig.h"
#include "misc.h"
#include "qstr.h"
#include "lexer.h"
#include "parse.h"
#include "obj.h"
#include "parsehelper.h"
#define STR_MEMORY "parser could not allocate enough memory"
#define STR_UNEXPECTED_INDENT "unexpected indent"
#define STR_UNMATCHED_UNINDENT "unindent does not match any outer indentation level"
#define STR_INVALID_SYNTAX "invalid syntax"
void mp_parse_show_exception(mp_lexer_t *lex, mp_parse_error_kind_t parse_error_kind) {
printf(" File \"%s\", line %d, column %d\n", qstr_str(mp_lexer_source_name(lex)), mp_lexer_cur(lex)->src_line, mp_lexer_cur(lex)->src_column);
switch (parse_error_kind) {
case MP_PARSE_ERROR_MEMORY:
printf("MemoryError: %s\n", STR_MEMORY);
break;
case MP_PARSE_ERROR_UNEXPECTED_INDENT:
printf("IndentationError: %s\n", STR_UNEXPECTED_INDENT);
break;
case MP_PARSE_ERROR_UNMATCHED_UNINDENT:
printf("IndentationError: %s\n", STR_UNMATCHED_UNINDENT);
break;
case MP_PARSE_ERROR_INVALID_SYNTAX:
default:
printf("SyntaxError: %s\n", STR_INVALID_SYNTAX);
break;
}
}
mp_obj_t mp_parse_make_exception(mp_lexer_t *lex, mp_parse_error_kind_t parse_error_kind) {
// make exception object
mp_obj_t exc;
switch (parse_error_kind) {
case MP_PARSE_ERROR_MEMORY:
exc = mp_obj_new_exception_msg(&mp_type_MemoryError, STR_MEMORY);
break;
case MP_PARSE_ERROR_UNEXPECTED_INDENT:
exc = mp_obj_new_exception_msg(&mp_type_IndentationError, STR_UNEXPECTED_INDENT);
break;
case MP_PARSE_ERROR_UNMATCHED_UNINDENT:
exc = mp_obj_new_exception_msg(&mp_type_IndentationError, STR_UNMATCHED_UNINDENT);
break;
case MP_PARSE_ERROR_INVALID_SYNTAX:
default:
exc = mp_obj_new_exception_msg(&mp_type_SyntaxError, STR_INVALID_SYNTAX);
break;
}
// add traceback to give info about file name and location
// we don't have a 'block' name, so just pass the NULL qstr to indicate this
mp_obj_exception_add_traceback(exc, mp_lexer_source_name(lex), mp_lexer_cur(lex)->src_line, MP_QSTR_NULL);
return exc;
}