node_condition.c

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#include "config.h"
#include <assert.h>
#include <stdbool.h>
#include "mutt/lib.h"
#include "node_condition.h"
#include "node.h"
#include "render.h"
 
static int node_condition_render(const struct ExpandoNode *node,
                                 const struct ExpandoRenderData *rdata, struct Buffer *buf,
                                 int max_cols, void *data, MuttFormatFlags flags)
{
  assert(node->type == ENT_CONDITION);
 
  const struct ExpandoNode *node_cond = node_get_child(node, ENC_CONDITION);
 
  // Discard any text returned, just use the return value as a bool
  struct Buffer *buf_cond = buf_pool_get();
  int rc = node_cond->render(node_cond, rdata, buf_cond, max_cols, data, flags);
  buf_pool_release(&buf_cond);
 
  if (rc == true)
  {
    const struct ExpandoNode *node_true = node_get_child(node, ENC_TRUE);
    return node_tree_render(node_true, rdata, buf, max_cols, data, flags);
  }
  else
  {
    const struct ExpandoNode *node_false = node_get_child(node, ENC_FALSE);
    return node_tree_render(node_false, rdata, buf, max_cols, data, flags);
  }
}
 
struct ExpandoNode *node_condition_new(struct ExpandoNode *condition,
                                       struct ExpandoNode *if_true_tree,
                                       struct ExpandoNode *if_false_tree)
{
  assert(condition);
  assert(if_true_tree);
 
  struct ExpandoNode *node = node_new();
 
  node->type = ENT_CONDITION;
  node->render = node_condition_render;
 
  ARRAY_SET(&node->children, ENC_CONDITION, condition);
  ARRAY_SET(&node->children, ENC_TRUE, if_true_tree);
  ARRAY_SET(&node->children, ENC_FALSE, if_false_tree);
 
  return node;
}