treeproc.java

来自「用Java实现的编译器。把源代码编译成SPARC汇编程序」· Java 代码 · 共 71 行

// $Id: TreeProc.java,v 1.3 2000/10/21 22:44:33 mdeeds Exp $

package java6035.tools.IR;

/**
 * TreeProc represents a procedure. It extends TreeBlock, and has an
 * additional symbol table field.
 */

public class TreeProc extends TreeBlock
{
    protected SymbolTable symtab;

    /* AUGMENT THIS WITH A SET NAME METHOD. This is for groups that
       reduce the block, and then the header. */

    /**
     * Constructs a TreeProc object.  @param procname may be the name
     * of the procedure, or any other descriptive name for this block.
     * It may also be the empty string.
     *
     * @param procname will become the suffix to the label of the
     * procedure. The symbol table is initialized to null.
     */
    public TreeProc(String procname)
    {
	super(procname);
	this.symtab = null;
    }

    /**
     * Constructs a TreeProc object.  @param procname may be the name
     * of the procedure, or any other descriptive name for this block.
     * It may also be the empty string.
     *
     * @param procname will become the suffix to the label of the
     * procedure. The symbol table is initialized to null.
     *
     * @param st is used as the Symbol table for this object.
     */
    public TreeProc(String procname, SymbolTable st)
    {
	super(procname);
	this.symtab = st;
    }

    protected int tnkind()
    {
	return TREE_PROC;
    }

    /**
     * Returns the symbol table associated with the TreeProc.
     **/
    public SymbolTable getSymbolTable()
    {
	return symtab;
    }

    /**
     * Makes the given symbol table the table associated with this
     * procedure.
     **/
    public void setSymbolTable(SymbolTable st)
    {
	this.symtab = st;
    }
}