matiec: stage3/case_elements_check.cc@37966f855bed (annotated)

1000 556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	1	/*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	2	* matiec - a compiler for the programming languages defined in IEC 61131-3
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	3	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	4	* Copyright (C) 2015 Mario de Sousa (msousa@fe.up.pt)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	5	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	6	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	7	* This program is free software: you can redistribute it and/or modify
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	8	* it under the terms of the GNU General Public License as published by
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	9	* the Free Software Foundation, either version 3 of the License, or
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	10	* (at your option) any later version.
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	11	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	12	* This program is distributed in the hope that it will be useful,
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	15	* GNU General Public License for more details.
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	16	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	17	* You should have received a copy of the GNU General Public License
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	19	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	20	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	21	* This code is made available on the understanding that it will not be
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	22	* used in safety-critical situations without a full and competent review.
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	23	*/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	24
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	25	/*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	26	* An IEC 61131-3 compiler.
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	27	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	28	* Based on the
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	29	* FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	30	*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	31	*/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	32
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	33
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	34	/*
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	35	* Case Options Checking:
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	36	* - Check whether the options in a case statement are repeated, either directly, or in a range.
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	37	* For example:
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	38	* case var of
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	39	* 1: ... <- OK
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	40	* 2: ... <- OK
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	41	* 1: ... <- OK (not an error), but produce a warning due to repeated '1'!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	42	* 0..8: ...<- OK (not an error), but produce a warning cue to repeated '1' and '2'!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	43	*/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	44
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	45
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	46	#include "case_elements_check.hh"
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	47
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	48
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	49	#define FIRST_(symbol1, symbol2) (((symbol1)->first_order < (symbol2)->first_order) ? (symbol1) : (symbol2))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	50	#define LAST_(symbol1, symbol2) (((symbol1)->last_order > (symbol2)->last_order) ? (symbol1) : (symbol2))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	51
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	52	#define STAGE3_ERROR(error_level, symbol1, symbol2, ...) { \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	53	if (current_display_error_level >= error_level) { \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	54	fprintf(stderr, "%s:%d-%d..%d-%d: error: ", \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	55	FIRST_(symbol1,symbol2)->first_file, FIRST_(symbol1,symbol2)->first_line, FIRST_(symbol1,symbol2)->first_column,\
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	56	LAST_(symbol1,symbol2) ->last_line, LAST_(symbol1,symbol2) ->last_column);\
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	57	fprintf(stderr, __VA_ARGS__); \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	58	fprintf(stderr, "\n"); \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	59	error_count++; \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	60	} \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	61	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	62
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	63
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	64	#define STAGE3_WARNING(symbol1, symbol2, ...) { \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	65	fprintf(stderr, "%s:%d-%d..%d-%d: warning: ", \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	66	FIRST_(symbol1,symbol2)->first_file, FIRST_(symbol1,symbol2)->first_line, FIRST_(symbol1,symbol2)->first_column,\
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	67	LAST_(symbol1,symbol2) ->last_line, LAST_(symbol1,symbol2) ->last_column);\
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	68	fprintf(stderr, __VA_ARGS__); \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	69	fprintf(stderr, "\n"); \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	70	warning_found = true; \
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	71	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	72
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	73
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	74	#define GET_CVALUE(dtype, symbol) ((symbol)->const_value._##dtype.get())
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	75	#define VALID_CVALUE(dtype, symbol) ((symbol)->const_value._##dtype.is_valid())
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	76
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	77
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	78
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	79
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	80	case_elements_check_c::case_elements_check_c(symbol_c *ignore) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	81	warning_found = false;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	82	error_count = 0;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	83	current_display_error_level = 0;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	84	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	85
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	86
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	87
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	88	case_elements_check_c::~case_elements_check_c(void) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	89	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	90
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	91
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	92
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	93	int case_elements_check_c::get_error_count() {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	94	return error_count;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	95	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	96
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	97
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	98
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	99
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	100	/* compare two integer constants, and determins if s1 < s2 */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	101	static bool less_than(symbol_c s1, symbol_c s2) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	102	if ( (VALID_CVALUE( int64, s1))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	103	&& (VALID_CVALUE( int64, s2))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	104	&& ( GET_CVALUE( int64, s1) < GET_CVALUE( int64, s2)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	105	return true;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	106
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	107	if ( (VALID_CVALUE(uint64, s1))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	108	&& (VALID_CVALUE(uint64, s2))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	109	&& ( GET_CVALUE(uint64, s1) < GET_CVALUE(uint64, s2)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	110	return true;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	111
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	112	if ( (VALID_CVALUE( int64, s1))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	113	&& (VALID_CVALUE(uint64, s2))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	114	&& ( GET_CVALUE( int64, s1) < 0))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	115	return true;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	116
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	117	return false;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	118	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	119
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	120
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	121
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	122	void case_elements_check_c::check_subr_subr(symbol_c s1, symbol_c s2) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	123	subrange_c sub1 = dynamic_cast<subrange_c >(s1);
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	124	subrange_c sub2 = dynamic_cast<subrange_c >(s2);
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	125
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	126	if ((NULL == sub1) \|\| (NULL == sub2)) return;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	127	symbol_c *l1 = sub1->lower_limit;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	128	symbol_c *u1 = sub1->upper_limit;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	129	symbol_c *l2 = sub2->lower_limit;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	130	symbol_c *u2 = sub2->upper_limit;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	131
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	132	if (less_than(u1, l2)) return; // no overlap!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	133	if (less_than(u2, l1)) return; // no overlap!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	134
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	135	if ( (VALID_CVALUE( int64, l1) \|\| (VALID_CVALUE(uint64, l1)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	136	&& (VALID_CVALUE( int64, l2) \|\| (VALID_CVALUE(uint64, l2)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	137	&& (VALID_CVALUE( int64, u1) \|\| (VALID_CVALUE(uint64, u1)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	138	&& (VALID_CVALUE( int64, u2) \|\| (VALID_CVALUE(uint64, u2))))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	139	STAGE3_WARNING(s1, s2, "Elements in CASE options have overlapping ranges.");
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	140	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	141
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	142
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	143
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	144
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	145	void case_elements_check_c::check_subr_symb(symbol_c s1, symbol_c s2) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	146	subrange_c *subr = NULL;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	147	symbol_c *symb = NULL;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	148	if ((subr = dynamic_cast<subrange_c *>(s1)) != NULL) {symb = s2;}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	149	if ((subr = dynamic_cast<subrange_c *>(s2)) != NULL) {symb = s1;}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	150
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	151	if ((NULL == subr) \|\| (NULL == symb)) return;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	152	symbol_c *lowl = subr->lower_limit;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	153	symbol_c *uppl = subr->upper_limit;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	154
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	155	if ( (VALID_CVALUE(int64, symb))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	156	&& (VALID_CVALUE(int64, lowl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	157	&& (VALID_CVALUE(int64, uppl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	158	&& ( GET_CVALUE(int64, symb) >= GET_CVALUE(int64, lowl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	159	&& ( GET_CVALUE(int64, symb) <= GET_CVALUE(int64, uppl)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	160	{STAGE3_WARNING(s1, s2, "Element in CASE option falls within range of another element."); return;}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	161
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	162	if ( (VALID_CVALUE(uint64, symb))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	163	&& (VALID_CVALUE( int64, lowl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	164	&& (VALID_CVALUE(uint64, uppl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	165	&& ( GET_CVALUE( int64, lowl) < 0)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	166	&& ( GET_CVALUE(uint64, symb) <= GET_CVALUE(uint64, uppl)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	167	{STAGE3_WARNING(s1, s2, "Element in CASE option falls within range of another element."); return;}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	168
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	169	if ( (VALID_CVALUE(uint64, symb))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	170	&& (VALID_CVALUE(uint64, lowl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	171	&& (VALID_CVALUE(uint64, uppl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	172	&& ( GET_CVALUE(uint64, symb) >= GET_CVALUE(uint64, lowl))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	173	&& ( GET_CVALUE(uint64, symb) <= GET_CVALUE(uint64, uppl)))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	174	{STAGE3_WARNING(s1, s2, "Element in CASE option falls within range of another element."); return;}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	175	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	176
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	177
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	178
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	179
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	180	#include <typeinfo>
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	181	void case_elements_check_c::check_symb_symb(symbol_c s1, symbol_c s2) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	182	if ( (dynamic_cast<subrange_c *>(s1) != NULL)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	183	\|\| (dynamic_cast<subrange_c *>(s2) != NULL))
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	184	return; // only run this test if neither s1 nor s2 are subranges!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	185
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	186	if ( (s1->const_value.is_const() && s2->const_value.is_const() && (s1->const_value == s2->const_value)) // if const, then compare const values (using overloaded '==' operator!)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	187	\|\| (compare_identifiers(s1, s2) == 0)) // if token_c, compare tokens! (compare_identifiers() returns 0 when equal tokens!, -1 when either is not token_c)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	188	STAGE3_WARNING(s1, s2, "Duplicate element found in CASE options.");
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	189	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	190
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	191
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	192
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	193
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	194
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	195
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	196
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	197
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	198
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	199	/***************************************/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	200	/* B.3 - Language ST (Structured Text) */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	201	/***************************************/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	202	/********************/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	203	/* B 3.2 Statements */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	204	/********************/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	205	/********************************/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	206	/* B 3.2.3 Selection Statements */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	207	/********************************/
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	208	/* CASE expression OF case_element_list ELSE statement_list END_CASE */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	209	// SYM_REF3(case_statement_c, expression, case_element_list, statement_list)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	210	void case_elements_check_c::visit(case_statement_c symbol) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	211	std::vector<symbol_c *> case_elements_list_local = case_elements_list; // Required when source code contains CASE inside another CASE !
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	212
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	213	case_elements_list.clear();
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	214	symbol->case_element_list->accept(*this); // will fill up the case_elements_list with all the elements in the case!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	215
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	216	// OK, now check whether we have any overlappings...
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	217	std::vector<symbol_c *>::iterator s1 = case_elements_list.begin();
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	218	for ( ; s1 != case_elements_list.end(); s1++) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	219	std::vector<symbol_c *>::iterator s2 = s1;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	220	s2++; // do not compare the value with itself!
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	221	for (; s2 != case_elements_list.end(); s2++) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	222	// Check for overlapping elements
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	223	check_subr_subr(s1, s2);
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	224	check_subr_symb(s1, s2);
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	225	check_symb_symb(s2, s1);
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	226	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	227	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	228
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	229	case_elements_list = case_elements_list_local;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	230	return NULL;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	231	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	232
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	233	/* helper symbol for case_statement */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	234	// SYM_LIST(case_element_list_c)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	235	// void case_elements_check_c::visit(case_element_list_c symbol) // not needed! We inherit from iterator_visitor_c
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	236
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	237	/* case_list ':' statement_list */
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	238	// SYM_REF2(case_element_c, case_list, statement_list)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	239	// void case_elements_check_c::visit(case_element_c symbol) // not needed! We inherit from iterator_visitor_c
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	240
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	241
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	242	// SYM_LIST(case_list_c)
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	243	void case_elements_check_c::visit(case_list_c symbol) {
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	244	for (int i = 0; i < symbol->n; i++)
1041 56ebe2a31b5b Access elements[] in list_c through a new get_element() method. Mario de Sousa <msousa@fe.up.pt> parents: 1000 diff changeset	245	case_elements_list.push_back(symbol->get_element(i));
1000 556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	246	return NULL;
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	247	}
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	248
556b74055518 Add check for repeated elements in a CASE statement. Emit warnings (and not errors) if found. mjsousa parents: diff changeset	249

author	Mario de Sousa <msousa@fe.up.pt>
	Sun, 16 Apr 2017 08:45:56 +0100
changeset 1048	37966f855bed
parent 1041	56ebe2a31b5b
permissions	-rw-r--r--