* Project led by Terence Parr at http://www.cs.usfca.edu

* Software rights: http://www.antlr.org/license.html

*

* $Id: //depot/code/org.antlr/release/antlr-2.7.6/antlr/JavaCodeGenerator.java#3 $

*/

    // non-zero if inside syntactic predicate generation

  /** Constant to indicate that we shouldn't generate a mapping entry */

  public static final int NO_MAPPING = -999;

  /**

   * Constant to indicate that we should continue mapping based on the

   *   last mapping seen by the SMAP generator (there may have been

   *   intermediate mappings generated by nested elements)

   */

  public static final int CONTINUE_LAST_MAPPING = -888;

  private JavaCodeGeneratorPrintWriterManager printWriterManager;

    private int defaultLine = NO_MAPPING;

    protected int syntacticPredLevel = 0;

    // Are we generating ASTs (for parsers and tree parsers) right now?

    protected boolean genAST = false;

    // Are we saving the text consumed (for lexers) right now?

    protected boolean saveText = false;

    // Grammar parameters set up to handle different grammar classes.

    // These are used to get instanceof tests out of code generation

    String labeledElementType;

    String labeledElementASTType;

    String labeledElementInit;

    String commonExtraArgs;

    String commonExtraParams;

    String commonLocalVars;

    String lt1Value;

    String exceptionThrown;

    String throwNoViable;

    /** Tracks the rule being generated.  Used for mapTreeId */

    RuleBlock currentRule;

    /** Tracks the rule or labeled subrule being generated.  Used for

     AST generation. */

    String currentASTResult;

    /** Mapping between the ids used in the current alt, and the

     * names of variables used to represent their AST values.

     */

    Hashtable treeVariableMap = new Hashtable();

    /** Used to keep track of which AST variables have been defined in a rule

     * (except for the #rule_name and #rule_name_in var's

     */

    Hashtable declaredASTVariables = new Hashtable();

    /* Count of unnamed generated variables */

    int astVarNumber = 1;

    /** Special value used to mark duplicate in treeVariableMap */

    protected static final String NONUNIQUE = new String();

    public static final int caseSizeThreshold = 127; // ascii is max

    private Vector semPreds;

    /** Create a Java code-generator using the given Grammar.

     * The caller must still call setTool, setBehavior, and setAnalyzer

     * before generating code.

     */

    public JavaCodeGenerator() {

        super();

        charFormatter = new JavaCharFormatter();

    }

    protected void printAction(String code) {

      printAction(code, defaultLine);

    }

     protected void printAction(String code, int sourceStartLine) {

      getPrintWriterManager().startMapping(sourceStartLine);

      super.printAction(code);

      getPrintWriterManager().endMapping();

    }

   

    public void println(String code) {

      println(code, defaultLine);

    }

     public void println(String code, int sourceStartLine) {

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().startSingleSourceLineMapping(sourceStartLine);

    super.println(code);

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().endMapping();

    }

   

    protected void print(String code) {

      print(code, defaultLine);

    }

     protected void print(String code, int sourceStartLine) {

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().startMapping(sourceStartLine);

    super.print(code);

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().endMapping();

    }

   

    protected void _print(String code) {

      _print(code, defaultLine);

    }

     protected void _print(String code, int sourceStartLine) {

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().startMapping(sourceStartLine);

      super._print(code);

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().endMapping();

    }

   

    protected void _println(String code) {

      _println(code, defaultLine);

    }

    protected void _println(String code, int sourceStartLine) {

    if (sourceStartLine > 0 || sourceStartLine == CONTINUE_LAST_MAPPING)

      getPrintWriterManager().startMapping(sourceStartLine);