package antlr.preprocessor;
/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.jGuru.com
* Software rights: http://www.antlr.org/RIGHTS.html
*
* $Id: //depot/code/org.antlr/release/antlr-2.7.2/antlr/preprocessor/GrammarFile.java#1 $
*/
import antlr.collections.impl.IndexedVector;
import java.util.Enumeration;
import java.io.*;
/** Stores header action, grammar preamble, file options, and
* list of grammars in the file
*/
public class GrammarFile {
protected String fileName;
protected String headerAction = "";
protected IndexedVector options;
protected IndexedVector grammars;
protected boolean expanded = false; // any grammars expanded within?
protected antlr.Tool tool;
public GrammarFile(antlr.Tool tool, String f) {
fileName = f;
grammars = new IndexedVector();
this.tool = tool;
}
public void addGrammar(Grammar g) {
grammars.appendElement(g.getName(), g);
}
public void generateExpandedFile() throws IOException {
if (!expanded) {
return; // don't generate if nothing got expanded
}
String expandedFileName = nameForExpandedGrammarFile(this.getName());
// create the new grammar file with expanded grammars
PrintWriter expF = tool.openOutputFile(expandedFileName);
expF.println(toString());
expF.close();
}
public IndexedVector getGrammars() {
return grammars;
}
public String getName() {
return fileName;
}
public String nameForExpandedGrammarFile(String f) {
if (expanded) {
// strip path to original input, make expanded file in current dir
return "expanded" + tool.fileMinusPath(f);
}
else {
return f;
}
}
public void setExpanded(boolean exp) {
expanded = exp;
}
public void addHeaderAction(String a) {
headerAction += a + System.getProperty("line.separator");
}
public void setOptions(IndexedVector o) {
options = o;
}
public String toString() {
String h = headerAction == null ? "" : headerAction;
String o = options == null ? "" : Hierarchy.optionsToString(options);
StringBuffer s = new StringBuffer(10000); s.append(h); s.append(o);
for (Enumeration e = grammars.elements(); e.hasMoreElements();) {
Grammar g = (Grammar)e.nextElement();
s.append(g.toString());
}
return s.toString();
}
}