circuitpython/py/parsehelper.c

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// these functions are separate from parse.c to keep parser independent of mp_obj_t
#include <stdint.h>
#include <stdio.h>
#include "misc.h"
#include "mpconfig.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;
}