-// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
package org.xwt;
import java.io.*;
// Instance Members ///////////////////////////////////////////////////////
- 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
-
- 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)
-
-
- // Instance Members that are only meaningful on root Template //////////////////////////////////////
-
- 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
+ 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 String[] urikeys;
+ private String[] urivals;
+ private Vec children = new Vec(); ///< during XML parsing, this holds the list of currently-parsed children; null otherwise
+ private JS script = null; ///< the script on this node
+ Template prev;
+ JSScope staticScope = null; ///< the scope in which the static block is executed
// Only used during parsing /////////////////////////////////////////////////////////////////
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 Res r; ///< the resource we came from
+ private XWT xwt;
// Static data/methods ///////////////////////////////////////////////////////////////////
- public static Template getTemplate(Res 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(e.toString());
- }
- }
-
- public static Res resolveStringToResource(String str, XWT xwt, boolean permitAbsolute) throws JSExn {
- // URL
- if (str.indexOf("://") != -1) {
- if (permitAbsolute) return (Res)xwt.url2res(str);
- throw new JSExn("absolute URL " + str + " not permitted here");
- }
-
- // 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;
- }
-
+ // for non-root nodes
+ private Template(Template t, int startLine) { prev = t; this.xwt = t.xwt; this.startLine = startLine; }
+ private Template(XWT xwt) { this.xwt = xwt; }
+
// Methods to apply templates ////////////////////////////////////////////////////////
- private Template(Res 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());
- }
-
- /** 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 fileNames to recieve private references on the pboxes
*/
- void apply(Box b, XWT xwt) {
+ void apply(Box b) throws JSExn {
try {
- apply(b, xwt, null);
+ apply(b, null);
+ } catch (IOException e) {
+ b.clear(b.VISIBLE);
+ b.mark_for_repack();
+ Log.warn(this, e);
+ throw new JSExn(e.toString());
} catch (JSExn e) {
b.clear(b.VISIBLE);
b.mark_for_repack();
- Log.info(Template.class, "WARNING: exception (below) thrown during application of template;");
- Log.info(Template.class, " setting visibility of target box to \"false\"");
- JS.log(e);
+ Log.warn(this, e);
+ throw e;
}
}
+ private void apply(Box b, PerInstantiationScope parentPis) throws JSExn, IOException {
+ if (prev != null) prev.apply(b, null);
- private void apply(Box b, XWT xwt, PerInstantiationJSScope parentPis) throws JSExn {
- getStatic(xwt);
-
+ // FIXME this dollar stuff is all wrong
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);
+
+ PerInstantiationScope pis = new PerInstantiationScope(b, xwt, parentPis, staticScope);
+ for(int i=0; i<urikeys.length; i++) {
+ pis.declare(urikeys[i]);
+ pis.put(urikeys[i], xwt.resolveString(urivals[i], true));
}
- PerInstantiationJSScope pis = new PerInstantiationJSScope(b, xwt, parentPis, staticScope);
+ // FIXME needs to obey the new application-ordering rules
for (int i=0; children != null && i<children.size(); i++) {
Box kid = new Box();
- ((Template)children.elementAt(i)).apply(kid, xwt, pis);
- b.putAndTriggerTraps(JS.N(b.treeSize()), kid);
+ ((Template)children.elementAt(i)).apply(kid, pis);
+ b.putAndTriggerTraps(b.get("numchildren"), kid);
}
- if (script != null) script.cloneWithNewParentScope(pis).call(null, null, null, null, 0);
+ if (script != null) JS.cloneWithNewParentScope(script, pis).call(null, null, null, null, 0);
Object key, val;
for(int i=0; keys != null && i < keys.length; i++) {
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);
+ val = xwt.resolveString(((String)val).substring(1), false);
+ // FIXME: url case
+ // FIXME: should we be resolving all of these in the XML-parsing code?
}
}
- if (val != null && "redirect".equals(key)) {
- val = pis.get("$"+val);
- if (val == null) throw new JSExn("redirect target '"+vals[i]+"' not found");
- }
-
b.putAndTriggerTraps(key, val);
}
}
// XML Parsing /////////////////////////////////////////////////////////////////
+ public static Template buildTemplate(InputStream is, XWT xwt) {
+ try {
+ return new TemplateHelper(is, xwt).t;
+ } catch (Exception e) {
+ Log.error(Template.class, e);
+ return null;
+ }
+ }
+
/** handles XML parsing; builds a Template tree as it goes */
static final class TemplateHelper extends XML {
- TemplateHelper() { }
-
- private int state;
+ private int state = STATE_INITIAL;
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;
+ private static final int STATE_IN_TEMPLATE_NODE = 2;
+ private static final int STATE_IN_META_NODE = 3;
- private String nameOfHeaderNodeBeingProcessed;
+ StringBuffer static_content = null;
+ int static_content_start = 0;
+ Vec nodeStack = new Vec();
+ Template t = null;
+ int meta = 0;
+ XWT xwt;
- 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
+ public TemplateHelper(InputStream is, XWT xwt) throws XML.Exn, IOException, JSExn {
+ this.xwt = xwt;
+ parse(new InputStreamReader(is));
+ JS staticScript = parseScript(static_content, static_content_start);
+ t.staticScope = new PerInstantiationScope(null, xwt, null, null);
+ if (staticScript != null) JS.cloneWithNewParentScope(staticScript, t.staticScope).call(null, null, null, null, 0);
+ }
- /** 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));
+ private JS parseScript(StringBuffer content, int content_start) throws IOException {
+ if (content == null) return null;
+ String contentString = content.toString();
+ if (contentString.trim().length() > 0) return JS.fromReader("FIXME", content_start, new StringReader(contentString));
+ return null;
}
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;
-
- 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
+ case STATE_IN_META_NODE: { meta++; return; }
+ case STATE_INITIAL:
+ if (!"ibex".equals(c.getLocalName()))
+ throw new XML.Exn("root element was not <ibex>", 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;
- 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;
- case "template":
- t.startLine = getLine();
+ case STATE_IN_XWT_NODE:
+ if ("meta".equals(c.getPrefix())) { state = STATE_IN_META_NODE; meta = 0; return; }
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 fileName/importlist/preapply
- Template t2 = new Template(t.r);
- t2.startLine = getLine();
- 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());
+ t = (t == null) ? new Template(xwt) : new Template(t, getLine());
+ break;
+ case STATE_IN_TEMPLATE_NODE:
+ nodeStack.addElement(t);
+ t = new Template(xwt);
+ break;
}
- }
- private void processBodyElement(XML.Element c) {
+ if (!("ui".equals(c.getPrefix()) && "box".equals(c.getLocalName()))) {
+ String tagname = (c.getUri().equals("") ? "" : (c.getUri() + ".")) + c.getLocalName();
+ // GROSS hack
+ try {
+ t.prev = (Template)t.xwt.resolveString(tagname, false).call(null, null, null, null, 9999);
+ } catch (Exception e) {
+ Log.error(Template.class, e);
+ }
+ }
+
+ Hash urimap = c.getUriMap();
+ t.urikeys = new String[urimap.size()];
+ t.urivals = new String[urimap.size()];
+ Enumeration uriEnumeration = urimap.keys();
+ int ii = 0;
+ while(uriEnumeration.hasMoreElements()) {
+ String key = (String)uriEnumeration.nextElement();
+ String val = (String)urimap.get(key);
+ t.urikeys[ii] = key;
+ if (val.charAt(0) == '.') val = val.substring(1);
+ t.urivals[ii] = val;
+ ii++;
+ }
+
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;
}
}
- 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.Exn, IOException {
- if (state == STATE_IN_XWT_NODE) {
- if ("static".equals(nameOfHeaderNodeBeingProcessed) && t.content != null) t.staticscript = parseScript(true);
- nameOfHeaderNodeBeingProcessed = null;
-
- } else if (state == STATE_IN_TEMPLATE_NODE) {
- if (t.content != null) t.script = parseScript(false);
- if (nodeStack.size() == 0) {
- // </template>
- state = STATE_FINISHED_TEMPLATE_NODE;
-
- } else {
- // add this template as a child of its parent
+ switch(state) {
+ case STATE_IN_META_NODE: if (meta-- < 0) state = STATE_IN_XWT_NODE; return;
+ case STATE_IN_XWT_NODE: return;
+ case STATE_IN_TEMPLATE_NODE: {
+ if (t.content != null) { t.script = parseScript(t.content, t.content_start); t.content = null; }
+ if (nodeStack.size() == 0) { state = STATE_IN_XWT_NODE; return; }
Template oldt = t;
t = (Template)nodeStack.lastElement();
nodeStack.setSize(nodeStack.size() - 1);
t.children.addElement(oldt);
-
int oldt_lines = getLine() - oldt.startLine;
for (int i=0; oldt_lines > i; i++) t.content.append('\n');
}
}
- }
+ }
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.Exn("tabs are not allowed in XWT files", XML.Exn.SCHEMA, getLine(), getCol());
-
- if ("static".equals(nameOfHeaderNodeBeingProcessed) || state == STATE_IN_TEMPLATE_NODE) {
- if (t.content == null) {
- t.content_start = getLine();
- t.content = new StringBuffer();
- }
-
- t.content.append(ch, start, length);
-
- } 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());
+ Log.error(Template.class, "tabs are not allowed in XWT files ("+getLine()+":"+getCol()+")");
+ switch(state) {
+ case STATE_IN_TEMPLATE_NODE:
+ if (t.content == null) {
+ t.content_start = getLine();
+ t.content = new StringBuffer();
+ }
+ t.content.append(ch, start, length);
+ return;
+ case STATE_IN_XWT_NODE:
+ if (static_content == null) {
+ static_content_start = getLine();
+ static_content = new StringBuffer();
+ }
+ static_content.append(ch, start, length);
+ return;
}
}
public void whitespace(char[] ch, int start, int length) throws XML.Exn { }
}
- private static class PerInstantiationJSScope extends JSScope {
+ private static class PerInstantiationScope extends JSScope {
XWT xwt = null;
- PerInstantiationJSScope parentBoxPis = null;
+ PerInstantiationScope 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) {
+ public PerInstantiationScope(JSScope parentScope, XWT xwt, PerInstantiationScope parentBoxPis, JSScope myStatic) {
super(parentScope);
this.parentBoxPis = parentBoxPis;
this.xwt = xwt;
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("")) return xwt.get("");
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