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/* Copyright 2010-2019 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <stdlib.h>
#include "parser.h"
static enum context *stack;
static size_t top; /* One above last pushed context. */
static size_t space;
void
reset_context_stack (void)
{
top = 0;
}
void
push_context (enum context c)
{
if (top >= space)
{
stack = realloc (stack, (space += 5) * sizeof (enum context));
}
debug (">>>>>>>>>>>>>>>>>PUSHING STACK AT %d -- %s", top,
c == ct_preformatted ? "preformatted"
: c == ct_line ? "line"
: c == ct_def ? "def"
: c == ct_menu ? "menu"
: "");
stack[top++] = c;
}
enum context
pop_context ()
{
if (top == 0)
abort ();
debug (">>>>>>>>>>>>>POPPING STACK AT %d", top - 1);
return stack[--top];
}
enum context
current_context (void)
{
if (top == 0)
return ct_NONE;
return stack[top - 1];
}
/* The valid regions are 'titlepage', 'copying', and 'documentdescription'.
This stack isn't used that much. */
static ELEMENT **region_stack;
static size_t region_top; /* One above last pushed region. */
static size_t region_space;
void
reset_region_stack (void)
{
region_top = 0;
}
void
push_region (ELEMENT *e)
{
if (region_top >= region_space)
{
region_stack = realloc (region_stack,
(region_space += 5) * sizeof (*region_stack));
}
debug (">>>>>>>>>>>>>>>>>PUSHING REGION STACK AT %d", region_top);
region_stack[region_top++] = e;
}
ELEMENT *
pop_region ()
{
if (region_top == 0)
abort ();
debug (">>>>>>>>>>>>>POPPING REGION STACK AT %d", region_top - 1);
return region_stack[--region_top];
}
enum command_id
current_region_cmd (void)
{
if (region_top == 0)
return CM_NONE;
return region_stack[region_top - 1]->cmd;
}
ELEMENT *
current_region (void)
{
if (region_top == 0)
return 0;
return region_stack[region_top - 1];
}
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