/*
* @(#)ExpressionStatement.java 1.13 95/09/14 Arthur van Hoff
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
package sun.tools.tree;
import sun.tools.java.*;
import sun.tools.asm.Assembler;
import java.io.PrintStream;
import java.util.Hashtable;
public
class ExpressionStatement extends Statement {
Expression expr;
/**
* Constructor
*/
public ExpressionStatement(int where, Expression expr) {
super(EXPRESSION, where);
this.expr = expr;
}
/**
* Check statement
*/
long check(Environment env, Context ctx, long vset, Hashtable exp) {
return expr.check(env, ctx, reach(env, vset), exp);
}
/**
* Inline
*/
public Statement inline(Environment env, Context ctx) {
if (expr != null) {
expr = expr.inline(env, ctx);
return (expr == null) ? null : this;
}
return null;
}
/**
* Create a copy of the statement for method inlining
*/
public Statement copyInline(Context ctx, boolean valNeeded) {
ExpressionStatement s = (ExpressionStatement)clone();
s.expr = expr.copyInline(ctx);
return s;
}
/**
* The cost of inlining this statement
*/
public int costInline(int thresh) {
return expr.costInline(thresh);
}
/**
* Code
*/
public void code(Environment env, Context ctx, Assembler asm) {
expr.code(env, ctx, asm);
}
/**
* Check if the first thing is a constructor invocation
*/
public boolean firstConstructor() {
return expr.firstConstructor();
}
/**
* Print
*/
public void print(PrintStream out, int indent) {
super.print(out, indent);
if (expr != null) {
expr.print(out);
} else {
out.print("<empty>");
}
out.print(";");
}
}