+++ /dev/null
-package ibex.xt;
-
-import ibex.util.XML;
-import org.ibex.js.JS;
-import org.ibex.js.JSScope;
-
-import ibex.collection.*;
-import java.util.*;
-
-import java.io.StringReader;
-import java.io.Writer;
-import java.io.IOException;
-
-public class JSElement extends JSScope implements XML.Element {
- protected XML.Element wrapped;
-
- /** Creates an Element around <tt>wrapped</tt>, replacing
- * references to it in its parent and children with this object. */
- public JSElement(XML.Element wrapped) {
- super(findScope(wrapped));
- this.wrapped = wrapped;
-
- // remap parent and children
- if (wrapped.getParent() != null) {
- List c = wrapped.getParent().getChildren();
- c.remove(wrapped); c.add(this);
- }
- List c = wrapped.getChildren();
- for (int i=c.size(); i >= 0; i--) ((XML.Block)c.get(i)).setParent(this);
- }
-
- public void toXML(Writer w) throws IOException {
- // grab all related attributes
- try {
- XML.Attributes a = getAttributes();
- for(int i=0; i < a.attrSize(); i++) {
- if (!"http://xt.ibex.org/".equals(a.getUri(i))) continue;
- declare(a.getKey(i));
- put(a.getKey(i), eval(a.getVal(i)));
- }
- } catch (Exception e) { throw new RuntimeException(e); }
- }
-
- private Object eval(String s) {
- if (s == null) return null;
- StringBuffer ret = new StringBuffer();
- while (s.indexOf("${") != -1) {
- ret.append(s.substring(0, s.indexOf("${")));
- String s2 = s.substring(s.indexOf("${")+2);
- Object app = exec("return (" + s2.substring(0, s2.indexOf('}')) + ");\n");
- s = s.substring(s.indexOf('}') + 1);
-
- if (!(app == null ||
- app instanceof String ||
- app instanceof Number ||
- app instanceof Boolean))
- throw new RuntimeException("javascripts within ${...} can only return " +
- "strings, numbers, and booleans; not a " +
- app.getClass().getName());
-
- ret.append(app == null ? "null" : app.toString());
- }
- ret.append(s);
- return ret.toString();
- }
-
- public Object exec(String s) {
- try {
- return JS.eval(JS.cloneWithNewParentScope(
- JS.fromReader("input", 0, new StringReader(s)), this));
- } catch (Exception e) {
- e.printStackTrace();
- throw new RuntimeException(e);
- }
- }
-
- // Pass Through ///////////////////////////////////////////////////////////
-
- public void setParent(XML.Element p) { wrapped.setParent(p); }
- public XML.Element getParent() { return wrapped.getParent(); }
- public XML.Attributes getAttributes() { return wrapped.getAttributes(); }
- public XML.Prefixes getPrefixes() { return wrapped.getPrefixes(); }
- public List getChildren() { return wrapped.getChildren(); }
- public String getQName() { return wrapped.getQName(); }
- public String getLocalName() { return wrapped.getLocalName(); }
- public String getPrefix() { return wrapped.getPrefix(); }
- public String getUri() { return wrapped.getUri(); }
-
- /** Works up the Element object model until an instance of a JSScope is found. */
- private static JSScope findScope(XML.Element e) {
- while (e != null && !(e instanceof JSScope)) e = e.getParent();
- return (JSScope)e;
- }
-
- /** A JSElement with the element attributes merged with a second
- * element.
- *
- * All functions of the XML.Element interface are mapped onto the
- * primary element, except <tt>getAttributes()</tt>. This function
- * returns a MergedAttr instance with the <b>secondary</b> element
- * acting as the primary attribute source.
- */
- public static class Merge extends JSElement {
- private final XML.Attributes a;
- public Merge(XML.Element wrapped, XML.Element merge) {
- super(wrapped);
- a = new MergeAttr(merge.getAttributes(), wrapped.getAttributes());
- }
- public XML.Attributes getAttributes() { return a; }
- }
-
- /** Creates a single view onto two sets of Attributes, first
- * checking the <tt>primary</tt> array for an entry, or
- * otherwise returning any matching entry in the
- * <tt>secondary</tt> Attributes object.
- *
- * FIXME: toXML() produces invalid XML if qname in both a and b.
- */
- public static final class MergeAttr implements XML.Attributes {
- private final XML.Attributes a, b;
- public MergeAttr(XML.Attributes primary, XML.Attributes secondary) {
- a = primary; b = secondary;
- }
- public int getIndex(String qname) {
- int i = a.getIndex(qname); if (i >= 0) return i;
- i = b.getIndex(qname); if (i >= 0) return i + a.attrSize();
- return -1;
- }
- public int getIndex(String uri, String key) {
- int i = a.getIndex(uri, key); if (i >= 0) return i;
- i = b.getIndex(uri, key); if (i >= 0) return i + b.attrSize();
- return -1;
- }
- public String getKey(int i) {
- return i >= a.attrSize() ? b.getKey(i-a.attrSize()) : a.getKey(i); }
- public String getVal(int i) {
- return i >= a.attrSize() ? b.getVal(i-a.attrSize()) : a.getVal(i); }
- public String getUri(int i) {
- return i >= a.attrSize() ? b.getUri(i-a.attrSize()) : a.getUri(i); }
- public String getPrefix(int i) {
- return i >= a.attrSize() ? b.getUri(i-a.attrSize()) : a.getUri(i); }
- public String getQName(int i) {
- return i >= a.attrSize() ? b.getUri(i-a.attrSize()) : a.getUri(i); }
- public int attrSize() { return a.attrSize() + b.attrSize(); }
- }
-}
projects / org.ibex.xt-crawshaw.git / blobdiff