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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include <string.h>
#include <emacs-module.h>
#include "big_endian.h"
#include "helper.h"
int
main(int argc, char **argv)
{
unsigned char error_vec_len[8] = { 0 };
unsigned char error_vec_cap[8] = { 0 };
struct SignedVec error_vec = { 0 };
error_vec.len = error_vec_len;
error_vec.capacity = error_vec_cap;
struct parser *parser = new_parser("start = \"a\"\"b\"\n", &error_vec);
uint64_t error_length = from_big_endian(error_vec.len);
if (error_length) {
printf("error: ");
char *error_str = error_vec.data;
for (int i = 0; i < error_length; i++) {
printf("%c", *(error_str+i));
}
printf("\n");
clean_signed(&error_vec, 4);
return 1;
}
unsigned char *input = malloc (sizeof(unsigned char) * 16);
if (input == NULL) {
clean_parser(parser);
clean_signed(&error_vec, 4);
printf("malloc fails at %s:%d\n", __FILE__, __LINE__);
return EXIT_FAILURE;
}
for (int i = 0; i < 16; i++) *(input+i) = 0;
*(input+15) = 1;
unsigned char input_len[8] = { 0 };
input_len[7] = 16;
struct UnsignedVec input_vec = (struct UnsignedVec) { input_len, NULL, input };
int result = parser_recognize
(parser,
&input_vec,
&error_vec,
(unsigned char) 0);
error_length = from_big_endian(error_vec.len);
if (error_length) {
clean_parser((void *) parser);
free(input);
printf("error: ");
char *error_str = error_vec.data;
for (uint64_t i = 0; i < error_length; i++) {
printf("%c", *(error_str + (unsigned long) i));
}
printf("\n");
clean_signed(&error_vec, 4);
return 1;
}
if (result)
printf("result = true\n");
else
printf("result = false\n");
for (int i = 0; i < 8; i++) {
error_vec.len[i] = 0;
error_vec.capacity[i] = 0;
}
struct UnsignedVec *forest_ptr = parser_parse
(parser,
&input_vec,
&error_vec,
(unsigned char) 1);
error_length = from_big_endian(error_vec.len);
if (error_length) {
clean_parser((void *) parser);
free(input);
printf("error: ");
char *error_str = error_vec.data;
for (uint64_t i = 0; i < error_length; i++) {
printf("%c", *(error_str + (unsigned long) i));
}
printf("\n");
clean_signed(&error_vec, 4);
return 1;
}
free(input);
clean_parser((void *) parser);
if (forest_ptr) {
uint64_t forest_len = from_big_endian(forest_ptr->len);
/* forest_len++; */
printf("a non-empty forest of length %llu\n", forest_len);
unsigned char *forest = forest_ptr->data;
uint64_t forest_real_len = from_big_endian(forest);
if (forest_real_len != forest_len) {
fprintf(stderr, "wrong length: %llu\n", forest_real_len);
clean_unsigned(forest_ptr, 15);
return 1;
}
if (forest_len < 27) {
fprintf(stderr, "length too small: %llu\n", forest_len);
clean_unsigned(forest_ptr, 15);
return 1;
}
printf("the lengths match\n");
if (*(forest+8) != 114 || *(forest+9) != 101 || *(forest+10) != 112) {
fprintf(stderr, "the forest does not begin with the special mark\n");
fprintf(stderr, "the first bytes are: ");
fprintf(stderr, "%c", *(forest+8));
fprintf(stderr, "%c", *(forest+9));
fprintf(stderr, "%c\n", *(forest+10));
clean_unsigned(forest_ptr, 15);
return 1;
}
printf("the special mark is correct.\n");
uint64_t nodes_len = from_big_endian(forest+11);
printf("forest has %llu nodes\n", nodes_len);
uint64_t labels_offset = from_big_endian(forest+19);
printf("the offset of labels is %llu\n", labels_offset);
if (forest_len < labels_offset ||
forest_len < (27 + 16 * nodes_len)) {
fprintf(stderr, "length too small: %llu\n", forest_len);
clean_unsigned(forest_ptr, 15);
return 1;
}
uint64_t total_degree = 0;
for (uint64_t i = 0; i < nodes_len; i++) {
uint64_t offset = 27 + 16 * i;
uint64_t degree = from_big_endian(forest+offset);
uint64_t node_offset = from_big_endian(forest+offset+8);
total_degree += degree;
printf("the %llu-th node has degree %llu and offset %llu\n",
i, degree, node_offset);
printf("label: ");
print_label(read_label(forest + labels_offset + 34 * i));
for (uint64_t j = 0; j < degree; j++) {
uint64_t child = from_big_endian(forest+node_offset+8*j);
printf("the %llu-th child is %llu\n", j, child);
}
printf("\n");
}
uint64_t correct = 27 + 50 * nodes_len + 8 * total_degree;
if (forest_len != correct) {
fprintf(stderr, "length does not conform to the format: %llu\n", correct);
clean_unsigned(forest_ptr, 15);
return 1;
}
printf("the forest has the correct length according to the format\n");
clean_unsigned(forest_ptr, 15);
} else {
printf("no forest\n");
}
return 0;
}
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