X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=src%2Forg%2Fxwt%2FTemplate.java;h=bd57bf9878fbc07605e28b0e9b28ff42fd95981f;hb=8c1756ef3fd42cc2f324baf47e13a83f51045efe;hp=1bf8b2b9e3573ad6565ac249505d203f741be23f;hpb=ac49a62b989af76577f5b62e5afd58e7972623b4;p=org.ibex.core.git
diff --git a/src/org/xwt/Template.java b/src/org/xwt/Template.java
index 1bf8b2b..bd57bf9 100644
--- a/src/org/xwt/Template.java
+++ b/src/org/xwt/Template.java
@@ -1,4 +1,4 @@
-// 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.*;
@@ -10,12 +10,7 @@ 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 nodeName -- 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
@@ -30,385 +25,114 @@ public class Template {
// 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 staticJSScope = 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 content
+ private int content_lines = 0; ///< number of lines in content
+ private int startLine = -1; ///< the line number that this element starts on
+ private final Res 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 id 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 content */
- private int content_start = 0;
-
- /** number of lines in content */
- 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));
- }
-
- public static Template buildTemplate(InputStream is, String nodeName) {
- return buildTemplate(is, nodeName, new TemplateHelper());
- }
-
- public static Template buildTemplate(InputStream is, String nodeName, TemplateHelper t) {
+ public static Template getTemplate(Res r) {
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());
+ 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) {
+ if (Log.on) Log.log(r.t == null ? "null" : r.t.fileName, e);
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);
+ }
+ }
+
+ public static Res resolveStringToResource(String str, XWT xwt, boolean permitAbsolute) {
+ // URL
+ if (str.indexOf("://") != -1) {
+ // FIXME
+ //if (permitAbsolute) return Res.fromString(str);
+ Log.log(Template.class, "absolute URL " + str + " not permitted here");
return null;
}
+
+ // root-relative
+ Res ret = xwt.rr;
+ while(str.indexOf('.') != -1) {
+ String path = str.substring(0, str.indexOf('.'));
+ str = str.substring(str.indexOf('.') + 1);
+ ret = (Res)ret.get(path);
+ }
+ ret = (Res)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(Res r) { this.r = r; }
- /** 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 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= 0; i--) {
- kids[i] = b.redirect.getChild(i);
- kids[i].remove();
- }
- }
-
- // 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 && ichange 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);
- }
- } 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;
- }
- }
-
- for(int i=0; children != null && iroot */
void parseit(InputStream is, Template root) throws XML.XMLException, IOException {
- rootNodeHasBeenEncountered = false;
- templateNodeHasBeenEncountered = false;
- staticNodeHasBeenEncountered = false;
- templateNodeHasBeenFinished = false;
+ state = STATE_INITIAL;
nameOfHeaderNodeBeingProcessed = null;
-
nodeStack.setSize(0);
- importlist.setSize(0);
- preapply.setSize(0);
- postapply.setSize(0);
-
- importlist.fromArray(defaultImportList);
-
t = root;
parse(new InputStreamReader(is));
}
- /** parsing state: true iff we have already encountered the open-tag */
- boolean rootNodeHasBeenEncountered = false;
-
- /** parsing state: true iff we have already encountered the open-tag */
- boolean templateNodeHasBeenEncountered = false;
-
- /** parsing state: true iff we have already encountered the open-tag */
- boolean staticNodeHasBeenEncountered = false;
-
- /** parsing state: true iff we have already encountered the 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 node");
-
- } else if (!rootNodeHasBeenEncountered) {
+ switch(state) {
+ case STATE_INITIAL:
if (!"xwt".equals(c.localName)) throw new XML.SchemaException("root element was not ");
if (c.len != 0) throw new XML.SchemaException("root element must not have attributes");
- rootNodeHasBeenEncountered = true;
+ state = STATE_IN_XWT_NODE;
return;
-
- } else if (!templateNodeHasBeenEncountered) {
+
+ case STATE_IN_XWT_NODE:
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(" 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(" node must have exactly one attribute, which must be called 'target'");
- if (t.redirect != null)
- throw new XML.SchemaException("the header element may not appear more than once");
- t.redirect = c.vals[0].toString();
- if(t.redirect.equals("null")) t.redirect = null;
- return;
-
- } else if (c.localName.equals("preapply")) {
- if (c.len != 1 || !c.keys[0].equals("name"))
- throw new XML.SchemaException(" 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(" node must have exactly one attribute, which must be called 'name'");
- postapply.addElement(c.vals[0]);
- return;
-
+ if (c.localName.equals("doc")) {
+ // FEATURE
} else if (c.localName.equals("static")) {
- if (staticNodeHasBeenEncountered)
+ if (t.staticscript != null)
throw new XML.SchemaException("the header node may not appear more than once");
if (c.len > 0)
throw new XML.SchemaException("the node may not have attributes");
- staticNodeHasBeenEncountered = true;
- return;
-
- } else if (c.localName.equals("preserve")) {
- if (c.len != 1 || !c.keys[0].equals("attributes"))
- throw new XML.SchemaException(" node must have exactly one attribute, which must be called 'attributes'");
- if (t.preserve != null)
- throw new XML.SchemaException(" 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 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;
-
+ state = STATE_IN_TEMPLATE_NODE;
+ processBodyElement(c);
} else {
throw new XML.SchemaException("unrecognized header node \"" + c.localName + "\"");
-
}
+ return;
- } else {
-
+ 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.localName.equals("box") && !c.localName.equals("template"))
+ t2.preapply.addElement((c.uri == null ? "" : (c.uri + ".")) + c.localName);
// make the new node the current node
t = t2;
+ processBodyElement(c);
+ return;
+ case STATE_FINISHED_TEMPLATE_NODE:
+ throw new XML.SchemaException("no elements may appear after the node");
}
+ }
- // 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) {
+ Hash h = new Hash(c.len * 2, 3);
+ for(int i=0; i0; j--) { t.keys[j] = t.keys[j - 1]; t.vals[j] = t.vals[j - 1]; }
+ t.keys[0] = (String)v.elementAt(i);
+ t.vals[0] = h.get(t.keys[0]);
+ } else {
+ t.keys[i] = (String)v.elementAt(i);
+ t.vals[i] = h.get(t.keys[i]);
+ }
+ }
for(int i=0; i 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;
+ private JSFunction parseScript(boolean isstatic) {
+ JSFunction thisscript = null;
+ try {
+ String contentString = t.content.toString();
+ if (contentString.trim().length() > 0)
+ thisscript = JS.parse(t.fileName + (isstatic ? "._" : ""), t.content_start, new StringReader(contentString));
+ } catch (IOException ioe) {
+ if (Log.on) Log.log(this, " ERROR: " + ioe.getMessage());
+ thisscript = null;
}
- 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);
+ t.content = null;
+ t.content_start = 0;
+ t.content_lines = 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);
+ 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) {
//
- 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;
}
-
- 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 {
// 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");
+ t.fileName+ ":" + getLine() + "," + getCol() + ": tabs are not allowed in XWT files");
- 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;
@@ -692,12 +330,38 @@ public class Template {
t.content.append(ch, start, length);
t.content_lines++;
- } else if (nameOfHeaderNodeBeingProcessed != null) {
+ } else if (nameOfHeaderNodeBeingProcessed != null && state != STATE_FINISHED_TEMPLATE_NODE) {
throw new XML.SchemaException("header node <" + nameOfHeaderNodeBeingProcessed + "> cannot have text content");
}
}
- public void whitespace(char[] ch, int start, int length) throws XML.SchemaException {
+ public void whitespace(char[] ch, int start, int length) throws XML.SchemaException { }
+ }
+
+ private static class PerInstantiationJSScope extends JSScope {
+ XWT xwt = null;
+ PerInstantiationJSScope parentBoxPis = null;
+ JSScope myStatic = null;
+ void putDollar(String key, Box target) {
+ if (parentBoxPis != null) parentBoxPis.putDollar(key, target);
+ declare("$" + key);
+ put("$" + key, target);
+ }
+ public PerInstantiationJSScope(JSScope parentJSScope, XWT xwt, PerInstantiationJSScope parentBoxPis, JSScope myStatic) {
+ super(parentJSScope);
+ this.parentBoxPis = parentBoxPis;
+ this.xwt = xwt;
+ this.myStatic = myStatic;
+ }
+ public Object get(Object key) {
+ if (super.has(key)) return super.get(key);
+ if (key.equals("xwt")) return xwt;
+ if (key.equals("static")) return myStatic;
+ return super.get(key);
+ }
+ public void put(Object key, Object val) {
+ if (super.has(key)) super.put(key, val);
+ else super.put(key, val);
}
}