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Syntax editor: change startcat when wrapping top node

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This commit is contained in:
john.j.camilleri
2012-12-07 15:32:31 +00:00
parent 9cd8f4e016
commit 36d2f165ea
4 changed files with 84 additions and 38 deletions
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67
src/www/syntax-editor/editor.js
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@@ -64,6 +64,7 @@ function Editor(gm,opts) {
this.gm = gm;
this.server = gm.server;
this.ast = null;
this.clear_on_change_startcat = true; // temp. false when wrapping
/* --- Register Grammar Manager hooks ----------------------------------- */
this.hook_change_grammar = function(grammar){
@@ -80,7 +81,8 @@ function Editor(gm,opts) {
this.hook_change_startcat = function(startcat){
debug("Editor: change startcat");
t.startcat = startcat;
t.start_fresh();
if (t.clear_on_change_startcat)
t.start_fresh();
};
this.hook_change_languages = function(languages){
debug("Editor: change languages");
@@ -167,7 +169,7 @@ Editor.prototype.add_refinement=function(fun,opts) {
var t = this;
options = {
label: fun,
disable_destructive: true
disable_destructive: false
};
if (opts) for (var o in opts) options[o] = opts[o];
var typeobj = t.lookup_fun(fun);
@@ -296,12 +298,12 @@ Editor.prototype.wrap_candidates = function() {
// we need to end with this
var cat = t.ast.getCat();
// if no parent, then cat can be anything as long
// as the current tree fits somewhere
var refinements = [];
for (var i in t.grammar_constructors.funs) {
var obj = t.grammar_constructors.funs[i];
if (elem(cat, obj.args)) {
// if no parent, then cat can be anything
// as long as the current tree fits somewhere
if (!t.ast.hasParent() || obj.ret==cat) {
refinements.push(obj);
}
@@ -313,27 +315,46 @@ Editor.prototype.wrap_candidates = function() {
return;
}
// Display wrap refinements
function addClickHandler(fun, child_id) {
return function() {
t.wrap.apply(t,[fun, child_id]);
}
}
t.ui.refinements.innerHTML = "Wrap with: ";
for (var i in refinements) {
var typeobj = refinements[i];
var fun = typeobj.name;
// Show a refinement for each potential child position
function addClickHandler(fun, child_id) {
return function() {
t.wrap.apply(t,[fun, child_id]);
}
}
// Find valid child ids
var child_ids = [];
for (var a in typeobj.args) {
var arg = typeobj.args[a];
if (arg == cat) {
var label = typeobj.name + " ?" + (parseInt(a)+1);
var ref = t.add_refinement(typeobj.name, {
label: label,
disable_destructive: false,
});
ref.onclick = addClickHandler(typeobj.name, a);
if (typeobj.args[a] == cat) {
child_ids.push(a);
}
}
// if (child_ids.length < 2) {
// var ref = t.add_refinement(fun);
// ref.onclick = addClickHandler(typeobj.name, a);
// } else {
// Show a refinement for each potential child position
for (var c in child_ids) {
var id = child_ids[c];
var label = fun;
for (var a in typeobj.args) {
if (a == id)
if (t.ast.currentNode.hasChildren())
label += " ("+t.ast.currentNode.fun+" …)";
else
label += " "+t.ast.currentNode.fun;
else
label += " ?";
}
var ref = t.add_refinement(typeobj.name, {label: label});
ref.onclick = addClickHandler(typeobj.name, id);
}
// }
}
}
@@ -342,6 +363,14 @@ Editor.prototype.wrap = function(fun, child_id) {
var t = this;
var typeobj = t.grammar_constructors.funs[fun];
// if we are at root node, potentially change startcat
if (t.ast.atRoot() && t.get_startcat() != typeobj.ret) {
var old_val = t.clear_on_change_startcat;
t.clear_on_change_startcat = false;
t.gm.change_startcat(typeobj.ret);
t.clear_on_change_startcat = old_val;
}
// do actual replacement
t.ast.wrap(typeobj, child_id);
@@ -380,6 +409,8 @@ Editor.prototype.redraw_tree=function() {
var elem = node; // function from support.js
function visit(container, id, node) {
var container2 = empty_class("div", "node");
if (id.get().length == 1)
container2.classList.add("first");
var label =
((node.fun) ? node.fun : "?") + " : " +
((node.cat) ? node.cat : "?");