-// Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
package org.xwt;
import java.io.*;
import java.util.*;
import java.lang.*;
import org.xwt.js.*;
+import org.xwt.translators.*;
import org.xwt.util.*;
/**
* Encapsulates a template node (the <template/> element of a
- * .xwt file, or any child element thereof). Each instance of
- * Template has a <tt>nodeName</tt> -- this is the resource name of
- * the file that the template node occurs in, concatenated with the
- * path from the root element to this node, each step of which is in
- * the form .n for some integer n. Static nodes use the string "._"
- * as a path.
+ * .xwt file, or any child element thereof).
*
* Note that the Template instance corresponding to the
* <template/> node carries all the header information -- hence
// Instance Members ///////////////////////////////////////////////////////
- /** this instance's nodeName */
- String nodeName;
+ String id = null; ///< the id of this box
+ String redirect = null; ///< the id of the redirect target; only meaningful on a root node
+ private String[] keys; ///< keys to be "put" to instances of this template; elements correspond to those of vals
+ private Object[] vals; ///< values to be "put" to instances of this template; elements correspond to those of keys
+ private Vec children = new Vec(); ///< during XML parsing, this holds the list of currently-parsed children; null otherwise
+ private int numunits = -1; ///< see numUnits(); -1 means that this value has not yet been computed
- /** the id of the redirect target; only meaningful on a root node */
- String redirect = null;
+ private JSFunction script = null; ///< the script on this node
+ private String fileName = "unknown"; ///< the filename this node came from; used only for debugging
+ private Vec preapply = new Vec(); ///< templates that should be preapplied (in the order of application)
- /** templates that should be preapplied (in the order of application); only meaningful on a root node */
- private String[] preapply;
- /** 'linked' form of preapply -- the String references have been resolved into instance references */
- private Template[] _preapply = null;
+ // Instance Members that are only meaningful on root Template //////////////////////////////////////
- /** templates that should be postapplied (in the order of application); only meaningful on a root node */
- private String[] postapply;
+ private JSScope staticScope = null; ///< the scope in which the static block is executed
+ private JSFunction staticscript = null; ///< the script on the static node of this template, null already performed
- /** 'linked' form of postapply -- the String references have been resolved into instance references */
- private Template[] _postapply = null;
- /** keys to be "put" to instances of this template; elements correspond to those of vals */
- private String[] keys;
+ // Only used during parsing /////////////////////////////////////////////////////////////////
- /** values to be "put" to instances of this template; elements correspond to those of keys */
- private Object[] vals;
+ private StringBuffer content = null; ///< during XML parsing, this holds partially-read character data; null otherwise
+ private int content_start = 0; ///< line number of the first line of <tt>content</tt>
+ private int startLine = -1; ///< the line number that this element starts on
+ private final Stream r; ///< the resource we came from
- /** array of strings representing the importlist for this template */
- private String[] importlist;
-
- /** child template objects */
- private Template[] children;
-
- /** an array of the names of properties to be preserved when retheming; only meaningful on a root node */
- private String[] preserve = null;
-
- /** the <tt>id</tt> attribute on this node */
- private String id = "";
-
- /** see numUnits(); -1 means that this value has not yet been computed */
- private int numunits = -1;
-
- /** true iff the resolution of this template's preapply/postapply sets changed as a result of the most recent call to retheme() */
- private boolean changed = false;
-
- /** the script on the static node of this template, null if it has already been executed */
- private JS.CompiledFunction staticscript = null;
-
- /** the script on this node */
- private JS.CompiledFunction script = null;
-
- /** during XML parsing, this holds the list of currently-parsed children; null otherwise */
- private Vec childvect = new Vec();
-
- /** during XML parsing, this holds partially-read character data; null otherwise */
- private StringBuffer content = null;
-
- /** line number of the first line of <tt>content</tt> */
- private int content_start = 0;
-
- /** number of lines in <tt>content</tt> */
- private int content_lines = 0;
-
- /** the line number that this element starts on */
- private int startLine = -1;
// Static data/methods ///////////////////////////////////////////////////////////////////
- /** a template cache so that only one Template object is created for each xwt */
- private static Hashtable cache = new Hashtable(1000);
-
- /** The default importlist; in future revisions this will contain "xwt.*" */
- public static final String[] defaultImportList = new String[] { };
-
- /** returns the appropriate template, resolving and theming as needed */
- public static Template getTemplate(String name, String[] importlist) {
- String resolved = Resources.resolve(name + ".xwt", importlist);
- Template t = resolved == null ? null : (Template)cache.get(resolved.substring(0, resolved.length() - 4));
- if (t != null) return t;
- if (resolved == null) return null;
-
- // note that Templates in xwar's are instantiated as read in via loadStream() --
- // the following code only runs when XWT is reading templates from a filesystem.
- ByteArrayInputStream bais = new ByteArrayInputStream(Resources.getResource(resolved));
- return buildTemplate(bais, resolved.substring(0, resolved.length() - 4));
+ // FIXME need to provide the XWT object too
+ public static Template getTemplate(Stream r) throws JSExn {
+ try {
+ r = r.addExtension(".xwt");
+ if (r.t != null) return r.t;
+ r.t = new Template(r);
+ new TemplateHelper().parseit(r.getInputStream(), r.t);
+ return r.t;
+ } catch (Exception e) {
+ throw new JSExn("Error reading template stream: " + r + "\n" + e.toString());
+ }
}
- public static Template buildTemplate(InputStream is, String nodeName) {
- return buildTemplate(is, nodeName, new TemplateHelper());
- }
+ public static Stream resolveStringToResource(String str, XWT xwt, boolean permitAbsolute) throws JSExn {
+ // URL
+ if (str.indexOf("://") != -1) {
+ if (permitAbsolute) return (Stream)xwt.url2res(str);
+ throw new JSExn("absolute URL " + str + " not permitted here");
+ }
- public static Template buildTemplate(InputStream is, String nodeName, TemplateHelper t) {
- try {
- return new Template(is, nodeName, t);
- } catch (XML.SchemaException e) {
- if (Log.on) Log.log(Template.class, "error parsing template " + nodeName);
- if (Log.on) Log.log(Template.class, e.getMessage());
- return null;
- } catch (XML.XMLException e) {
- if (Log.on) Log.log(Template.class, "error parsing template at " + nodeName + ":" + e.getLine() + "," + e.getCol());
- if (Log.on) Log.log(Template.class, e.getMessage());
- return null;
- } catch (IOException e) {
- if (Log.on) Log.log(Template.class, "IOException while parsing template " + nodeName + " -- this should never happen");
- if (Log.on) Log.log(Template.class, e);
- return null;
+ // root-relative
+ Stream ret = xwt.rr;
+ while(str.indexOf('.') != -1) {
+ String path = str.substring(0, str.indexOf('.'));
+ str = str.substring(str.indexOf('.') + 1);
+ ret = (Stream)ret.get(path);
}
+ ret = (Stream)ret.get(str);
+ return ret;
}
// Methods to apply templates ////////////////////////////////////////////////////////
- private Template(String nodeName) {
- this.nodeName = nodeName;
- cache.put(nodeName, this);
- }
- private Template(InputStream is, String nodeName, TemplateHelper th) throws XML.XMLException, IOException {
- this(nodeName);
- th.parseit(is, this);
+ private Template(Stream r) {
+ this.r = r;
+ String f = r.toString();
+ if (f != null && !f.equals(""))
+ fileName = f.substring(f.lastIndexOf('/')+1, f.endsWith(".xwt") ? f.length() - 4 : f.length());
}
- /** calculates, caches, and returns an integer approximation of how long it will take to apply this template, including pre/post and children */
- int numUnits() {
- link();
- if (numunits != -1) return numunits;
- numunits = 1;
- for(int i=0; _preapply != null && i<_preapply.length; i++) if (_preapply[i] != null) numunits += _preapply[i].numUnits();
- for(int i=0; _postapply != null && i<_postapply.length; i++) if (_postapply[i] != null) numunits += _postapply[i].numUnits();
- if (script != null) numunits += 10;
- numunits += keys == null ? 0 : keys.length;
- for(int i=0; children != null && i<children.length; i++) numunits += children[i].numUnits();
- return numunits;
+ /** called before this template is applied or its static object can be externally referenced */
+ JSScope getStatic(XWT xwt) throws JSExn {
+ if (staticScope == null) staticScope = new PerInstantiationJSScope(null, xwt, null, null);
+ if (staticscript == null) return staticScope;
+ JSFunction temp = staticscript;
+ staticscript = null;
+ temp.cloneWithNewParentScope(staticScope).call(null, null, null, null, 0);
+ return staticScope;
}
/** Applies the template to Box b
* @param pboxes a vector of all box parents on which to put $-references
- * @param ptemplates a vector of the nodeNames to recieve private references on the pboxes
+ * @param ptemplates a vector of the fileNames to recieve private references on the pboxes
*/
- void apply(Box b, Vec pboxes, Vec ptemplates, JS.Callable callback, int numerator, int denominator) {
-
- int original_numerator = numerator;
-
- if (pboxes == null) {
- pboxes = new Vec();
- ptemplates = new Vec();
- }
-
- if (id != null && !id.equals(""))
- for(int i=0; i<pboxes.size(); i++) {
- Box parent = (Box)pboxes.elementAt(i);
- String parentNodeName = (String)ptemplates.elementAt(i);
- parent.put("$" + id, b);
- }
-
- if (script != null || (redirect != null && !"self".equals(redirect))) {
- pboxes.addElement(b);
- ptemplates.addElement(nodeName);
+ void apply(Box b, XWT xwt) throws JSExn {
+ try {
+ apply(b, xwt, null);
+ } catch (JSExn e) {
+ b.clear(b.VISIBLE);
+ b.mark_for_repack();
+ throw e;
}
+ }
- int numids = pboxes.size();
-
- link();
- for(int i=0; _preapply != null && i<_preapply.length; i++)
- if (_preapply[i] != null) {
- _preapply[i].apply(b, null, null, callback, numerator, denominator);
- numerator += _preapply[i].numUnits();
- }
+ private void apply(Box b, XWT xwt, PerInstantiationJSScope parentPis) throws JSExn {
+ getStatic(xwt);
- for (int i=0; children != null && i<children.length; i++) {
- b.put(Integer.MAX_VALUE, new Box(children[i], pboxes, ptemplates, callback, numerator, denominator));
- numerator += children[i].numUnits();
+ if (id != null) parentPis.putDollar(id, b);
+ for(int i=0; i<preapply.size(); i++) {
+ Template t = getTemplate(resolveStringToResource((String)preapply.elementAt(i), xwt, false));
+ if (t == null) throw new RuntimeException("unable to resolve resource " + preapply.elementAt(i));
+ t.apply(b, xwt);
}
- // whom to redirect to; doesn't take effect until after script runs
- Box redir = null;
- if (redirect != null && !"self".equals(redirect)) redir = (Box)b.get("$" + redirect);
-
- if (script != null) try {
- script.call(new JS.Array(), b);
- } catch (JS.Exn e) {
- if (Log.on) Log.log(this, "WARNING: uncaught ecmascript exception: " + e.getMessage());
- }
+ PerInstantiationJSScope pis = new PerInstantiationJSScope(b, xwt, parentPis, staticScope);
- for(int i=0; keys != null && i<keys.length; i++) {
- // FIXME: make sure that if exceptions are thrown in here, the line number of the offending XML is logged
- if (keys[i] == null) { }
- else if (keys[i].equals("border") || keys[i].equals("image") &&
- !vals[i].toString().startsWith("http://") && !vals[i].toString().startsWith("https://")) {
- String s = Resources.resolve(vals[i].toString() + ".png", importlist);
- if (s != null) b.put(keys[i], s.substring(0, s.length() - 4));
- else if (Log.on) Log.log(this, "unable to resolve image " + vals[i].toString() + " referenced in attributes of " + nodeName);
- }
- else b.put(keys[i], vals[i]);
+ for (int i=0; children != null && i<children.size(); i++) {
+ Box kid = new Box();
+ ((Template)children.elementAt(i)).apply(kid, xwt, pis);
+ b.putAndTriggerTraps(b.get("numchildren"), kid);
}
- if (redirect != null && !"self".equals(redirect)) b.redirect = redir;
-
- for(int i=0; _postapply != null && i<_postapply.length; i++)
- if (_postapply[i] != null) {
- _postapply[i].apply(b, null, null, callback, numerator, denominator);
- numerator += _postapply[i].numUnits();
- }
+ if (script != null) script.cloneWithNewParentScope(pis).call(null, null, null, null, 0);
- pboxes.setSize(numids);
- ptemplates.setSize(numids);
+ Object key, val;
+ for(int i=0; keys != null && i < keys.length; i++) {
+ if (keys[i] == null) continue;
+ key = keys[i];
+ val = vals[i];
- numerator = original_numerator + numUnits();
+ if ("null".equals(val)) val = null;
- if (callback != null)
- try {
- JS.Array args = new JS.Array();
- args.addElement(new Double(numerator));
- args.addElement(new Double(denominator));
- callback.call(args);
- } catch (JS.Exn e) {
- if (Log.on) Log.log(this, "WARNING: uncaught ecmascript exception: " + e);
- }
-
- if (Thread.currentThread() instanceof ThreadMessage) try {
- XWT.sleep(0);
- } catch (JS.Exn e) {
- if (Log.on) Log.log(this, "WARNING: uncaught ecmascript exception: " + e);
- }
- }
-
-
- // Theming Logic ////////////////////////////////////////////////////////////
-
- /** helper method to recursively gather up the list of keys to be preserved */
- private void gatherPreserves(Vec v) {
- for(int i=0; preserve != null && i<preserve.length; i++) v.addElement(preserve[i]);
- for(int i=0; _preapply != null && i<_preapply.length; i++) if (_preapply[i] != null) _preapply[i].gatherPreserves(v);
- for(int i=0; _postapply != null && i<_postapply.length; i++) if (_postapply[i] != null) _postapply[i].gatherPreserves(v);
- }
-
- /** adds a theme mapping, retemplatizing as needed */
- public static void retheme(JS.Callable callback) {
- XWF.flushXWFs();
-
- // clear changed marker and relink
- Template[] t = new Template[cache.size()];
- Enumeration e = cache.elements();
- for(int i=0; e.hasMoreElements(); i++) t[i] = (Template)e.nextElement();
- for(int i=0; i<t.length; i++) {
- t[i].changed = false;
- t[i].numunits = -1;
- t[i].link(true);
- }
-
- for(int i=0; i<Surface.allSurfaces.size(); i++) {
- Box b = ((Surface)Surface.allSurfaces.elementAt(i)).root;
- if (b != null) reapply(b);
- }
-
- if (callback != null)
- try {
- JS.Array args = new JS.Array();
- args.addElement(new Double(1.0));
- args.addElement(new Double(1.0));
- callback.call(args);
- } catch (JS.Exn ex) {
- if (Log.on) Log.log(Template.class, "WARNING: uncaught ecmascript exception: " + ex.getMessage());
- }
- }
-
- /** template reapplication procedure */
- private static void reapply(Box b) {
-
- Log.log(Template.class, "Template.reapply() not implemented");
- /*
- // Ref 7.5.1: check if we need to retemplatize
- boolean retemplatize = false;
- if (b.templatename != null) {
- Template t = getTemplate(b.templatename, b.importlist);
- if (t != b.template) retemplatize = true;
- b.template = t;
- }
- if (b.template != null && b.template.changed) retemplatize = true;
-
- if (retemplatize) {
-
- // Ref 7.5.2: "Preserve all properties on the box mentioned in the <preserve> elements of any
- // of the templates which would be applied in step 7."
- Vec keys = new Vec();
- b.template.gatherPreserves(keys);
- Object[] vals = new Object[keys.size()];
- for(int i=0; i<keys.size(); i++) vals[i] = b.get(((String)keys.elementAt(i)), null);
-
- // Ref 7.5.3: "Remove and save all children of the box, or its redirect target, if it has one"
- Box[] kids = null;
- if (b.redirect != null) {
- kids = new Box[b.redirect.numChildren()];
- for(int i=b.redirect.numChildren() - 1; i >= 0; i--) {
- kids[i] = b.redirect.getChild(i);
- kids[i].remove();
+ if (val != null && val instanceof String && ((String)val).length() > 0) {
+ switch (((String)val).charAt(0)) {
+ case '$':
+ val = pis.get(val);
+ if (val == null) throw new JSExn("unknown box id '"+vals[i]+"' referenced in XML attribute");
+ break;
+ case '.':
+ val = resolveStringToResource(((String)val).substring(1), xwt, true);
}
}
-
- // Ref 7.5.4: "Set the box's redirect target to self"
- b.redirect = b;
-
- // Ref 7.5.5: "Remove all of the box's immediate children"
- for(Box cur = b.getChild(b.numChildren() - 1); cur != null;) {
- Box oldcur = cur;
- cur = cur.prevSibling();
- oldcur.remove();
- }
-
- // Ref 7.5.6: "Remove all traps set by scripts run during the application of any template to this box"
- Trap.removeAllTrapsByBox(b);
-
- // Ref 7.5.7: "Apply the template to the box according to the usual application procedure"
- b.template.apply(b, null, null, null, 0, 1);
-
- // Ref 7.5.8: "Re-add the saved children which were removed in step 3"
- for(int i=0; kids != null && i<kids.length; i++) b.put(Integer.MAX_VALUE, null, kids[i]);
-
- // Ref 7.5.9: "Re-put any property values which were preserved in step 2"
- for(int i=0; i<keys.size(); i++) b.put((String)keys.elementAt(i), null, vals[i]);
- }
-
- // Recurse
- for(Box j = b.getChild(0); j != null; j = j.nextSibling()) reapply(j);
- */
- }
-
- /** runs statics, resolves string references to other templates into actual Template instance references, and sets <tt>change</tt> as needed */
- void link() { link(false); }
-
- /** same as link(), except that with a true value, it will force a re-link */
- private void link(boolean force) {
-
- if (staticscript != null) try {
- JS.Scope s = Static.createStatic(nodeName, false);
- if (staticscript != null) {
- JS.CompiledFunction temp = staticscript;
- staticscript = null;
- // we layer a transparent scope over the Static so that we can catch requests for the xwt object
- // yet not screw up paths that include a package called xwt (ie xwt.static.org.xwt.foo)
- JS.Scope varScope = new JS.Scope(s) {
- public boolean isTransparent() { return true; }
- public Object get(Object key) {
- if ("xwt".equals(key)) return XWT.singleton; else return super.get(key);
- } };
-
- temp.call(new JS.Array(), varScope);
+ if (val != null && "redirect".equals(key)) {
+ val = pis.get("$"+val);
+ if (val == null) throw new JSExn("redirect target '"+vals[i]+"' not found");
}
- } catch (JS.Exn e) {
- if (Log.on) Log.log(this, "WARNING: uncaught ecmascript exception: " + e.getMessage());
- }
- if (!(force || (preapply != null && _preapply == null) || (postapply != null && _postapply == null))) return;
-
- if (preapply != null) {
- if (_preapply == null) _preapply = new Template[preapply.length];
- for(int i=0; i<_preapply.length; i++) {
- Template t = getTemplate(preapply[i], importlist);
- if (t != _preapply[i]) changed = true;
- _preapply[i] = t;
- }
- }
- if (postapply != null) {
- if (_postapply == null) _postapply = new Template[postapply.length];
- for(int i=0; i<_postapply.length; i++) {
- Template t = getTemplate(postapply[i], importlist);
- if (t != _postapply[i]) changed = true;
- _postapply[i] = t;
+ try {
+ b.putAndTriggerTraps(key, val);
+ } catch(JSExn e) {
+ e.addBacktrace(fileName + ":attr-" + key,0);
+ throw e;
}
}
-
- for(int i=0; children != null && i<children.length; i++) children[i].link(force);
}
+
// XML Parsing /////////////////////////////////////////////////////////////////
/** handles XML parsing; builds a Template tree as it goes */
TemplateHelper() { }
- /** parse an XML input stream, building a Template tree off of <tt>root</tt> */
- void parseit(InputStream is, Template root) throws XML.XMLException, IOException {
- rootNodeHasBeenEncountered = false;
- templateNodeHasBeenEncountered = false;
- staticNodeHasBeenEncountered = false;
- templateNodeHasBeenFinished = false;
- nameOfHeaderNodeBeingProcessed = null;
+ private int state;
+ private static final int STATE_INITIAL = 0;
+ private static final int STATE_IN_XWT_NODE = 1;
+ private static final int STATE_IN_TEMPLATE_NODE = 2;
+ private static final int STATE_FINISHED_TEMPLATE_NODE = 3;
- nodeStack.setSize(0);
- importlist.setSize(0);
- preapply.setSize(0);
- postapply.setSize(0);
+ private String nameOfHeaderNodeBeingProcessed;
- importlist.fromArray(defaultImportList);
+ Vec nodeStack = new Vec(); ///< stack of Templates whose XML elements we have seen open-tags for but not close-tags
+ Template t = null; ///< the template we're currently working on
+ /** parse an XML input stream, building a Template tree off of <tt>root</tt> */
+ void parseit(InputStream is, Template root) throws XML.Exn, IOException {
+ state = STATE_INITIAL;
+ nameOfHeaderNodeBeingProcessed = null;
+ nodeStack.setSize(0);
t = root;
parse(new InputStreamReader(is));
}
- /** parsing state: true iff we have already encountered the <xwt> open-tag */
- boolean rootNodeHasBeenEncountered = false;
-
- /** parsing state: true iff we have already encountered the <template> open-tag */
- boolean templateNodeHasBeenEncountered = false;
-
- /** parsing state: true iff we have already encountered the <static> open-tag */
- boolean staticNodeHasBeenEncountered = false;
-
- /** parsing state: true iff we have already encountered the <template> close-tag */
- boolean templateNodeHasBeenFinished = false;
-
- /** parsing state: If we have encountered the open tag of a header node, but not the close tag, this is the name of
- * that tag; otherwise, it is null. */
- String nameOfHeaderNodeBeingProcessed = null;
-
- /** stack of Templates whose XML elements we have seen open-tags for but not close-tags */
- Vec nodeStack = new Vec();
-
- /** builds up the list of imports */
- Vec importlist = new Vec();
-
- /** builds up the list of preapplies */
- Vec preapply = new Vec();
-
- /** builds up the list of postapplies */
- Vec postapply = new Vec();
-
- /** the template we're currently working on */
- Template t = null;
-
- public void startElement(XML.Element c) throws XML.SchemaException {
- if (templateNodeHasBeenFinished) {
- throw new XML.SchemaException("no elements may appear after the <template> node");
-
- } else if (!rootNodeHasBeenEncountered) {
- if (!"xwt".equals(c.localName)) throw new XML.SchemaException("root element was not <xwt>");
- if (c.len != 0) throw new XML.SchemaException("root element must not have attributes");
- rootNodeHasBeenEncountered = true;
+ public void startElement(XML.Element c) throws XML.Exn {
+ switch(state) {
+ case STATE_INITIAL:
+ if (!"xwt".equals(c.getLocalName()))
+ throw new XML.Exn("root element was not <xwt>", XML.Exn.SCHEMA, getLine(), getCol());
+ if (c.getAttrLen() != 0)
+ throw new XML.Exn("root element must not have attributes", XML.Exn.SCHEMA, getLine(), getCol());
+ state = STATE_IN_XWT_NODE;
return;
-
- } else if (!templateNodeHasBeenEncountered) {
- if (nameOfHeaderNodeBeingProcessed != null) throw new XML.SchemaException("can't nest header nodes");
- nameOfHeaderNodeBeingProcessed = c.localName;
-
- if (c.localName.equals("import")) {
- if (c.len != 1 || !c.keys[0].equals("name"))
- throw new XML.SchemaException("<import> node must have exactly one attribute, which must be called 'name'");
- String importpackage = c.vals[0].toString();
- if (importpackage.endsWith(".*")) importpackage = importpackage.substring(0, importpackage.length() - 2);
- importlist.addElement(importpackage);
- return;
- } else if (c.localName.equals("redirect")) {
- if (c.len != 1 || !c.keys[0].equals("target"))
- throw new XML.SchemaException("<redirect> node must have exactly one attribute, which must be called 'target'");
- if (t.redirect != null)
- throw new XML.SchemaException("the <redirect> header element may not appear more than once");
- t.redirect = c.vals[0].toString();
- if(t.redirect.equals("null")) t.redirect = null;
+ case STATE_IN_XWT_NODE:
+ if (nameOfHeaderNodeBeingProcessed != null)
+ throw new XML.Exn("can't nest header nodes", XML.Exn.SCHEMA, getLine(), getCol());
+ nameOfHeaderNodeBeingProcessed = c.getLocalName();
+ //#switch(c.getLocalName())
+ case "doc":
+ // FEATURE
return;
-
- } else if (c.localName.equals("preapply")) {
- if (c.len != 1 || !c.keys[0].equals("name"))
- throw new XML.SchemaException("<preapply> node must have exactly one attribute, which must be called 'name'");
- preapply.addElement(c.vals[0]);
- return;
-
- } else if (c.localName.equals("postapply")) {
- if (c.len != 1 || !c.keys[0].equals("name"))
- throw new XML.SchemaException("<postapply> node must have exactly one attribute, which must be called 'name'");
- postapply.addElement(c.vals[0]);
- return;
-
- } else if (c.localName.equals("static")) {
- if (staticNodeHasBeenEncountered)
- throw new XML.SchemaException("the <static> header node may not appear more than once");
- if (c.len > 0)
- throw new XML.SchemaException("the <static> node may not have attributes");
- staticNodeHasBeenEncountered = true;
+ case "static":
+ if (t.staticscript != null)
+ throw new XML.Exn("the <static> header node may only appear once", XML.Exn.SCHEMA, getLine(), getCol());
+ if (c.getAttrLen() > 0)
+ throw new XML.Exn("the <static> node may not have attributes", XML.Exn.SCHEMA, getLine(), getCol());
return;
-
- } else if (c.localName.equals("preserve")) {
- if (c.len != 1 || !c.keys[0].equals("attributes"))
- throw new XML.SchemaException("<preserve> node must have exactly one attribute, which must be called 'attributes'");
- if (t.preserve != null)
- throw new XML.SchemaException("<preserve> header element may not appear more than once");
-
- StringTokenizer tok = new StringTokenizer(c.vals[0].toString(), ",", false);
- t.preserve = new String[tok.countTokens()];
- for(int i=0; i<t.preserve.length; i++) t.preserve[i] = tok.nextToken();
- return;
-
- } else if (c.localName.equals("template")) {
- // finalize importlist/preapply/postapply, since they can't change from here on
+ case "template":
t.startLine = getLine();
- importlist.toArray(t.importlist = new String[importlist.size()]);
- if (preapply.size() > 0) preapply.copyInto(t.preapply = new String[preapply.size()]);
- if (postapply.size() > 0) postapply.copyInto(t.postapply = new String[postapply.size()]);
- importlist.setSize(0); preapply.setSize(0); postapply.setSize(0);
- templateNodeHasBeenEncountered = true;
-
- } else {
- throw new XML.SchemaException("unrecognized header node \"" + c.localName + "\"");
-
- }
-
- } else {
+ state = STATE_IN_TEMPLATE_NODE;
+ processBodyElement(c);
+ return;
+ //#end
+ throw new XML.Exn("unrecognized header node \"" + c.getLocalName() + "\"", XML.Exn.SCHEMA, getLine(), getCol());
+ case STATE_IN_TEMPLATE_NODE:
// push the last node we were in onto the stack
nodeStack.addElement(t);
-
- // instantiate a new node, and set its nodeName/importlist/preapply
- Template t2 = new Template(t.nodeName + "." + t.childvect.size());
- t2.importlist = t.importlist;
+ // instantiate a new node, and set its fileName/importlist/preapply
+ Template t2 = new Template(t.r);
t2.startLine = getLine();
- if (!c.localName.equals("box")) t2.preapply = new String[] { c.localName };
-
+ if (!c.getLocalName().equals("box") && !c.getLocalName().equals("template"))
+ t2.preapply.addElement((c.getUri().equals("") ? "" : (c.getUri() + ".")) + c.getLocalName());
// make the new node the current node
t = t2;
+ processBodyElement(c);
+ return;
+ case STATE_FINISHED_TEMPLATE_NODE:
+ throw new XML.Exn("no elements may appear after the <template> node", XML.Exn.SCHEMA, getLine(), getCol());
}
+ }
- // TODO: Sort contents straight from one array to another
- t.keys = new String[c.len];
- t.vals = new Object[c.len];
- System.arraycopy(c.keys, 0, t.keys, 0, c.len);
- System.arraycopy(c.vals, 0, t.vals, 0, c.len);
- quickSortAttributes(0, t.keys.length - 1);
+ private void processBodyElement(XML.Element c) {
+ Vec keys = new Vec(c.getAttrLen());
+ Vec vals = new Vec(c.getAttrLen());
+
+ // process attributes into Vecs, dealing with any XML Namespaces in the process
+ ATTR: for (int i=0; i < c.getAttrLen(); i++) {
+ //#switch(c.getAttrKey(i))
+ case "preapply":
+ String uri = c.getAttrUri(i); if (!uri.equals("")) uri += ".";
+ StringTokenizer tok = new StringTokenizer(c.getAttrVal(i).toString(), " ");
+ while(tok.hasMoreTokens()) t.preapply.addElement(uri + tok.nextToken());
+ continue ATTR;
+
+ case "id":
+ t.id = c.getAttrVal(i).toString().intern();
+ continue ATTR;
+ //#end
+
+ // treat value starting with '.' as resource reference
+ String uri = c.getAttrUri(i); if (!uri.equals("")) uri = '.' + uri;
+ keys.addElement(c.getAttrKey(i));
+ vals.addElement((c.getAttrVal(i).startsWith(".") ? uri : "") + c.getAttrVal(i));
+ }
- for(int i=0; i<t.keys.length; i++) {
- if (t.keys[i].equals("id")) {
- t.id = t.vals[i].toString().intern();
- t.keys[i] = null;
- continue;
- }
+ if (keys.size() == 0) return;
+ // sort the attributes lexicographically
+ Vec.sort(keys, vals, new Vec.CompareFunc() { public int compare(Object a, Object b) {
+ return ((String)a).compareTo((String)b);
+ } });
+
+ t.keys = new String[keys.size()];
+ t.vals = new Object[vals.size()];
+ keys.copyInto(t.keys);
+ vals.copyInto(t.vals);
+
+ // convert attributes to appropriate types and intern strings
+ for(int i=0; i<t.keys.length; i++) {
t.keys[i] = t.keys[i].intern();
String valString = t.vals[i].toString();
if (valString.length() > 0 && !hasNonNumeral) t.vals[i] = new Double(valString);
else t.vals[i] = valString.intern();
}
-
- // bump thisbox to the front of the pack
- if (t.keys[i].equals("thisbox")) {
- t.keys[i] = t.keys[0];
- t.keys[0] = "thisbox";
- Object o = t.vals[0];
- t.vals[0] = t.vals[i];
- t.vals[i] = o;
- }
- }
- }
-
- /** simple quicksort, from http://sourceforge.net/snippet/detail.php?type=snippet&id=100240 */
- private int partitionAttributes(int left, int right) {
- int i, j, middle;
- middle = (left + right) / 2;
- String s = t.keys[right]; t.keys[right] = t.keys[middle]; t.keys[middle] = s;
- Object o = t.vals[right]; t.vals[right] = t.vals[middle]; t.vals[middle] = o;
- for (i = left - 1, j = right; ; ) {
- while (t.keys[++i].compareTo(t.keys[right]) < 0);
- while (j > left && t.keys[--j].compareTo(t.keys[right]) > 0);
- if (i >= j) break;
- s = t.keys[i]; t.keys[i] = t.keys[j]; t.keys[j] = s;
- o = t.vals[i]; t.vals[i] = t.vals[j]; t.vals[j] = o;
}
- s = t.keys[right]; t.keys[right] = t.keys[i]; t.keys[i] = s;
- o = t.vals[right]; t.vals[right] = t.vals[i]; t.vals[i] = o;
- return i;
}
- /** simple quicksort, from http://sourceforge.net/snippet/detail.php?type=snippet&id=100240 */
- private void quickSortAttributes(int left, int right) {
- if (left >= right) return;
- int p = partitionAttributes(left, right);
- quickSortAttributes(left, p - 1);
- quickSortAttributes(p + 1, right);
+ private JSFunction parseScript(boolean isstatic) throws IOException {
+ JSFunction thisscript = null;
+ String contentString = t.content.toString();
+ if (contentString.trim().length() > 0)
+ thisscript = JSFunction.fromReader(t.fileName + (isstatic ? "._" : ""),
+ t.content_start,
+ new StringReader(contentString));
+ t.content = null;
+ t.content_start = 0;
+ return thisscript;
}
- public void endElement(XML.Element c) throws XML.SchemaException {
- if (rootNodeHasBeenEncountered && !templateNodeHasBeenEncountered) {
- if ("static".equals(nameOfHeaderNodeBeingProcessed) && t.content != null) t.staticscript = genscript(true);
+ public void endElement(XML.Element c) throws XML.Exn, IOException {
+ if (state == STATE_IN_XWT_NODE) {
+ if ("static".equals(nameOfHeaderNodeBeingProcessed) && t.content != null) t.staticscript = parseScript(true);
nameOfHeaderNodeBeingProcessed = null;
-
- } else if (templateNodeHasBeenEncountered && !templateNodeHasBeenFinished) {
- // turn our childvect into a Template[]
- t.childvect.copyInto(t.children = new Template[t.childvect.size()]);
- t.childvect = null;
- if (t.content != null) t.script = genscript(false);
+ } else if (state == STATE_IN_TEMPLATE_NODE) {
+ if (t.content != null) t.script = parseScript(false);
if (nodeStack.size() == 0) {
// </template>
- templateNodeHasBeenFinished = true;
-
+ state = STATE_FINISHED_TEMPLATE_NODE;
+
} else {
// add this template as a child of its parent
Template oldt = t;
t = (Template)nodeStack.lastElement();
nodeStack.setSize(nodeStack.size() - 1);
- t.childvect.addElement(oldt);
- }
-
- }
- }
+ t.children.addElement(oldt);
- private JS.CompiledFunction genscript(boolean isstatic) {
- JS.CompiledFunction thisscript = null;
- try {
- thisscript = JS.parse(t.nodeName + (isstatic ? "._" : ""), t.content_start, new StringReader(t.content.toString()));
- } catch (JS.Exn ee) {
- if (Log.on) Log.log(this, " ERROR: " + ee.getMessage());
- thisscript = null;
- } catch (IOException ioe) {
- if (Log.on) Log.log(this, " ERROR: " + ioe.getMessage());
- thisscript = null;
+ int oldt_lines = getLine() - oldt.startLine;
+ for (int i=0; oldt_lines > i; i++) t.content.append('\n');
+ }
}
+ }
- t.content = null;
- t.content_start = 0;
- t.content_lines = 0;
- return thisscript;
- }
-
- public void characters(char[] ch, int start, int length) throws XML.SchemaException {
+ public void characters(char[] ch, int start, int length) throws XML.Exn {
// invoke the no-tab crusade
- for (int i=0; length >i; i++) if (ch[start+i] == '\t') throw new XML.SchemaException(
- t.nodeName+ ":" + getLine() + "," + getCol() + ": tabs are not allowed in XWT files");
+ for (int i=0; length >i; i++) if (ch[start+i] == '\t')
+ Log.error(Template.class, "tabs are not allowed in XWT files ("+getLine()+":"+getCol()+")");
- if ("static".equals(nameOfHeaderNodeBeingProcessed) || templateNodeHasBeenEncountered) {
+ if ("static".equals(nameOfHeaderNodeBeingProcessed) || state == STATE_IN_TEMPLATE_NODE) {
if (t.content == null) {
t.content_start = getLine();
- t.content_lines = 0;
t.content = new StringBuffer();
}
t.content.append(ch, start, length);
- t.content_lines++;
- } else if (nameOfHeaderNodeBeingProcessed != null) {
- throw new XML.SchemaException("header node <" + nameOfHeaderNodeBeingProcessed + "> cannot have text content");
+ } else if (nameOfHeaderNodeBeingProcessed != null && state != STATE_FINISHED_TEMPLATE_NODE) { throw new XML.Exn(
+ "header node <" +nameOfHeaderNodeBeingProcessed+ "> cannot have text content", XML.Exn.SCHEMA, getLine(), getCol());
}
}
- public void whitespace(char[] ch, int start, int length) throws XML.SchemaException {
+ public void whitespace(char[] ch, int start, int length) throws XML.Exn { }
+ }
+
+ private static class PerInstantiationJSScope extends JSScope {
+ XWT xwt = null;
+ PerInstantiationJSScope parentBoxPis = null;
+ JSScope myStatic = null;
+ void putDollar(String key, Box target) throws JSExn {
+ if (parentBoxPis != null) parentBoxPis.putDollar(key, target);
+ declare("$" + key);
+ put("$" + key, target);
+ }
+ public PerInstantiationJSScope(JSScope parentScope, XWT xwt, PerInstantiationJSScope parentBoxPis, JSScope myStatic) {
+ super(parentScope);
+ this.parentBoxPis = parentBoxPis;
+ this.xwt = xwt;
+ this.myStatic = myStatic;
+ }
+ public Object get(Object key) throws JSExn {
+ if (super.has(key)) return super.get(key);
+ if (key.equals("xwt")) return xwt;
+ if (key.equals("")) return xwt.rr;
+ if (key.equals("static")) return myStatic;
+ return super.get(key);
+ }
+ public void put(Object key, Object val) throws JSExn {
+ if (super.has(key)) super.put(key, val);
+ else super.put(key, val);
}
}
projects / org.ibex.core.git / blobdiff