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/* See LICENSE file for copyright and license details. */
/* This file exist to help debugging */
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libparser.h"
static int
print_sentence(const union libparser_sentence *sentence, int indent)
{
int len;
switch (sentence->type) {
case LIBPARSER_SENTENCE_TYPE_CONCATENATION:
printf("(");
indent = print_sentence(sentence->binary.left, indent + 1);
printf(", ");
indent = print_sentence(sentence->binary.right, indent + 2);
printf(")");
indent + 1;
break;
case LIBPARSER_SENTENCE_TYPE_ALTERNATION:
printf("(");
print_sentence(sentence->binary.left, indent + 1);
printf(" | \n%*.s", indent + 1, "");
indent = print_sentence(sentence->binary.right, indent + 1);
printf(")");
indent + 1;
break;
case LIBPARSER_SENTENCE_TYPE_REJECTION:
printf("!(");
indent = print_sentence(sentence->unary.sentence, indent + 2);
printf(")");
indent + 1;
break;
case LIBPARSER_SENTENCE_TYPE_OPTIONAL:
printf("[");
indent = print_sentence(sentence->unary.sentence, indent + 1);
printf("]");
indent + 1;
break;
case LIBPARSER_SENTENCE_TYPE_REPEATED:
printf("{");
indent = print_sentence(sentence->unary.sentence, indent + 1);
printf("}");
indent += 1;
break;
case LIBPARSER_SENTENCE_TYPE_STRING:
printf("\"%.*s\"%n", (int)sentence->string.length, sentence->string.string, &len);
indent += len;
break;
case LIBPARSER_SENTENCE_TYPE_CHAR_RANGE:
if (isprint(sentence->char_range.low) && isprint(sentence->char_range.high))
printf("<\"%c\", \"%c\">%n", sentence->char_range.low, sentence->char_range.high, &len);
else if (isprint(sentence->char_range.low))
printf("<\"%c\", 0x%02x>%n", sentence->char_range.low, sentence->char_range.high, &len);
else if (isprint(sentence->char_range.high))
printf("<0x%02x, \"%c\">%n", sentence->char_range.low, sentence->char_range.high, &len);
else
printf("<0x%02x, 0x%02x>%n", sentence->char_range.low, sentence->char_range.high, &len);
indent += len;
break;
case LIBPARSER_SENTENCE_TYPE_RULE:
printf("%s%n", sentence->rule.rule, &len);
indent += len;
break;
case LIBPARSER_SENTENCE_TYPE_EXCEPTION:
printf("-");
indent += 1;
break;
case LIBPARSER_SENTENCE_TYPE_EOF:
printf("%s%n", "(* end of file *)", &len);
indent += len;
break;
default:
abort();
}
return indent;
}
int
main(int argc, char *argv[0])
{
size_t i;
int indent, first = 1;
if (argc != 1) {
fprintf(stderr, "usage: %s\n", argv[0]);
return 1;
}
for (i = 0; libparser_rule_table[i]; i++) {
if (libparser_rule_table[i]->name[0] == '@')
continue;
if (!first) {
printf("\n");
} else {
first = 0;
}
printf("%s = %n", libparser_rule_table[i]->name, &indent);
print_sentence(libparser_rule_table[i]->sentence, indent);
printf(";\n");
}
if (fflush(stdout) || ferror(stdout) || fclose(stdout)) {
fprintf(stderr, "%s: printf: %s\n", argv[0], strerror(errno));
return 1;
}
return 0;
}
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