flow_cmp.c

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/*
 * Copyright 2017      Sven Verdoolaege
 *
 * Use of this software is governed by the MIT license
 *
 * Written by Sven Verdoolaege.
 */
 
#include <stdlib.h>
 
#include <isl/arg.h>
#include <isl/options.h>
#include <isl/union_map.h>
#include <isl/stream.h>
 
struct options {
  struct isl_options *isl;
  char *flow1;
  char *flow2;
};
 
ISL_ARGS_START(struct options, options_args)
ISL_ARG_CHILD(struct options, isl, "isl", &isl_options_args, "isl options")
ISL_ARG_ARG(struct options, flow1, "flow1", NULL)
ISL_ARG_ARG(struct options, flow2, "flow2", NULL)
ISL_ARGS_END
 
ISL_ARG_DEF(options, struct options, options_args)
 
static void die(const char *msg)
{
  fprintf(stderr, "%s\n", msg);
  exit(EXIT_FAILURE);
}
 
static FILE *open_or_die(const char *filename)
{
  FILE *file;
 
  file = fopen(filename, "r");
  if (!file) {
    fprintf(stderr, "Unable to open %s\n", filename);
    exit(EXIT_FAILURE);
  }
  return file;
}
 
#undef BASE
#define BASE union_map
#include "read_in_string_templ.c"
 
/* Given two YAML descriptions of isl_union_flow objects, check whether
 * they are equivalent.
 * Return EXIT_SUCCESS if they are and EXIT_FAILURE if they are not
 * or if anything else went wrong.
 *
 * The descriptions are checked field by field, meaning that the fields
 * are expected to appear in the same order in both inputs.
 */
int main(int argc, char **argv)
{
  isl_bool more;
  isl_ctx *ctx;
  struct options *options;
  FILE *input1, *input2;
  isl_stream *s1, *s2;
 
  options = options_new_with_defaults();
  if (!options)
    return EXIT_FAILURE;
 
  ctx = isl_ctx_alloc_with_options(&options_args, options);
  argc = options_parse(options, argc, argv, ISL_ARG_ALL);
 
  input1 = open_or_die(options->flow1);
  input2 = open_or_die(options->flow2);
  s1 = isl_stream_new_file(ctx, input1);
  s2 = isl_stream_new_file(ctx, input2);
 
  if (isl_stream_yaml_read_start_mapping(s1) < 0)
    isl_die(ctx, isl_error_unknown, "arg1 not a YAML mapping",
      return EXIT_FAILURE);
  if (isl_stream_yaml_read_start_mapping(s2) < 0)
    isl_die(ctx, isl_error_unknown, "arg2 not a YAML mapping",
      return EXIT_FAILURE);
 
  while ((more = isl_stream_yaml_next(s1)) == isl_bool_true) {
    isl_bool more2;
    isl_bool equal;
    isl_union_map *umap1, *umap2;
 
    more2 = isl_stream_yaml_next(s2);
    if (more2 < 0)
      return EXIT_FAILURE;
    if (!more2)
      isl_die(ctx, isl_error_unknown, "arg2 shorter",
        return EXIT_FAILURE);
    if (isl_stream_eat(s1, ISL_TOKEN_IDENT) < 0)
      return EXIT_FAILURE;
    if (isl_stream_eat(s2, ISL_TOKEN_IDENT) < 0)
      return EXIT_FAILURE;
    more = isl_stream_yaml_next(s1);
    more2 = isl_stream_yaml_next(s2);
    if (more < 0 || more2 < 0)
      return EXIT_FAILURE;
    if (!more || !more2)
      isl_die(ctx, isl_error_unknown, "missing value",
        return EXIT_FAILURE);
 
    umap1 = read_union_map(s1);
    umap2 = read_union_map(s2);
    equal = isl_union_map_is_equal(umap1, umap2);
    isl_union_map_free(umap1);
    isl_union_map_free(umap2);
    if (equal < 0)
      return EXIT_FAILURE;
    if (!equal)
      die("field not equal");
  }
  if (more < 0)
    return EXIT_FAILURE;
 
 
  if (isl_stream_yaml_read_end_mapping(s1) < 0)
    return EXIT_FAILURE;
  if (isl_stream_yaml_read_end_mapping(s2) < 0)
    return EXIT_FAILURE;
 
  isl_stream_free(s1);
  isl_stream_free(s2);
  fclose(input1);
  fclose(input2);
  isl_ctx_free(ctx);
 
  return EXIT_SUCCESS;
}