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/*

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 * (c) 2003 Mario de Sousa

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 *

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 * Offered to the public under the terms of the GNU General Public License

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 * as published by the Free Software Foundation; either version 2 of the

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 * License, or (at your option) any later version.

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 *

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 * This program is distributed in the hope that it will be useful, but

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 * WITHOUT ANY WARRANTY; without even the implied warranty of

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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General

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 * Public License for more details.

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 *

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 * This code is made available on the understanding that it will not be

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 * used in safety-critical situations without a full and competent review.

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 */

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/*

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 * An IEC 61131-3 IL and ST compiler.

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 *

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 * Based on the

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 * FINAL DRAFT - IEC 61131-3, 2nd Ed. (2001-12-10)

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 *

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 */

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/*

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 * This file contains the code that stores the output generated

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 * by each specific version of the 4th stage.

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 */

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// #include <stdio.h>  /* required for NULL */

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#include <string>

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#include <iostream>

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#include "stage4.hh"

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stage4out_c::stage4out_c(std::string indent_level) {

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  this->indent_level = indent_level;

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  this->indent_spaces = "";

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}

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stage4out_c::~stage4out_c(void) {}

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void stage4out_c::indent_right(void) {

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  indent_spaces+=indent_level;

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}

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void stage4out_c::indent_left(void) {

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  if (indent_spaces.length() >= indent_level.length())

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    indent_spaces.erase(indent_spaces.length() - indent_level.length(), indent_level.length());

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  else

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    indent_spaces.erase();

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}

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void *stage4out_c::print(const char *str) {

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  std::cout << str;

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  return NULL;

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}

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void *stage4out_c::printupper(const char *str) {

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  for (int i = 0; str[i] != '\0'; i++)

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    std::cout << (unsigned char)toupper(str[i]);

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  return NULL;

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}

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void *stage4out_c::print(std::string str) {

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  std::cout << str;

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  return NULL;

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}

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void *stage4out_c::printupper(std::string str) {

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  /* The string standard class does not have a converter member function to upper case.

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   * We have to do it ourselves, a character at a time...

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   */

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#if 0

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  /* The C++ way of doint things... */

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  for (string::const_iterator p = str.begin(); p != str.end(); ++p)

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    std::cout << (unsigned char)toupper(*p);

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#else

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  /* Or more simply... */

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    printupper(str.c_str());

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#endif

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  return NULL;

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}

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/***********************************************************************/

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/* forward declarations... */

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/* These functions will be implemented in generate_XXX.cc */

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visitor_c *new_code_generator(stage4out_c *s4o);

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void delete_code_generator(visitor_c *code_generator);

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int stage4(symbol_c *tree_root) {

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  stage4out_c s4o;

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  visitor_c *generate_code = new_code_generator(&s4o);

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  if (NULL == generate_code)

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    return -1;

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  tree_root->accept(*generate_code);

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  delete_code_generator(generate_code);

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  return 0;

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}

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