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Syntax editor: internal optimizations by pre-computing certain stuff

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This commit is contained in:
john.j.camilleri
2012-11-30 15:08:46 +00:00
parent 589e1e4f08
commit 596cd4d473
3 changed files with 83 additions and 106 deletions
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111
src/www/syntax-editor/editor.js
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@@ -52,7 +52,7 @@ function Editor(gm,opts) {
format: "json"
};
var cont = function(data){
t.grammar_constructors = data;
t.process_grammar_constructors(data);
t.start_fresh();
};
t.server.browse(args, cont);
@@ -90,6 +90,30 @@ function Editor(gm,opts) {
}
/* --- Pre-processed grammar information ------------------------------------ */
Editor.prototype.process_grammar_constructors=function(data) {
var t = this;
t.grammar_constructors=data;
for (var fun in t.grammar_constructors.funs) {
var def = t.grammar_constructors.funs[fun].def;
var typeobj = AST.parse_type_signature(def);
t.grammar_constructors.funs[fun] = typeobj;
}
}
// Look up information for a category
Editor.prototype.lookup_cat = function(cat) {
var t = this;
return t.grammar_constructors.cats[cat];
}
// Look up information for a function
Editor.prototype.lookup_fun = function(fun) {
var t = this;
return t.grammar_constructors.funs[fun];
}
/* --- API for getting and setting state ------------------------------------ */
Editor.prototype.get_ast=function() {
@@ -101,9 +125,8 @@ Editor.prototype.get_startcat=function() {
}
Editor.prototype.initialize_from=function(opts) {
var t=this;
if (opts.abstr)
t.import_ast(opts.abstr);
this.import_ast(opts.abstr);
}
// Called after changing grammar or startcat
@@ -131,7 +154,9 @@ Editor.prototype.get_refinements=function(cat) {
};
var cont = function(data){
clear(t.ui.refinements);
for (pi in data.producers) {
for (var pi in data.producers) {
// hide refinement if identical to current fun?
var fun = data.producers[pi];
var opt = span_class("refinement", text(fun));
opt.onclick = bind(function(){
@@ -140,8 +165,7 @@ Editor.prototype.get_refinements=function(cat) {
// If refinement would be destructive, disable it
var blank = t.ast.is_writable();
var def = t.grammar_constructors.funs[fun].def;
var typeobj = AST.parse_type_signature(def);
var typeobj = t.lookup_fun(fun);
var inplace = t.ast.fits_in_place(typeobj);
if (!blank && !inplace) {
opt.classList.add("disabled");
@@ -157,48 +181,6 @@ Editor.prototype.get_refinements=function(cat) {
t.server.browse(args, cont, err);
}
// Editor.prototype.select_refinement=function(fun) {
// var t = this;
// t.ui.refinements.innerHTML = "...";
// t.ast.removeChildren();
// t.ast.setFun(fun);
// var args = {
// id: fun,
// format: "json"
// };
// var err = function(data){
// alert("Error");
// };
// t.server.browse(args, bind(t.complete_refinement,this), err);
// }
// Editor.prototype.complete_refinement=function(data) {
// if (!data) return;
// with (this) {
// // Parse out function arguments
// var def = data.def;
// def = def.substr(def.lastIndexOf(":")+1);
// var fun_args = map(function(s){return s.trim()}, def.split("->"))
// fun_args = fun_args.slice(0,-1);
// if (fun_args.length > 0) {
// // Add placeholders
// for (ci in fun_args) {
// ast.add(null, fun_args[ci]);
// }
// }
// // Update ui
// redraw_tree();
// update_linearisation();
// // Select next hole & get its refinements
// ast.toNextHole();
// update_current_node();
// }
// }
// Select refinement now by default replaces "in-place"
// Case 1: current node is blank/no kids
// Case 2: kids have all same types, perform an in-place replacement
@@ -210,12 +192,11 @@ Editor.prototype.select_refinement=function(fun) {
var blank = t.ast.is_writable();
// Check if we can replace in-place (case 2)
var def = t.grammar_constructors.funs[fun].def;
var typeobj = AST.parse_type_signature(def);
var typeobj = t.lookup_fun(fun);
var inplace = !blank && t.ast.fits_in_place(typeobj);
if (!blank && !inplace) {
alert("use clear first if you want to replace the subtree");
alert("Use 'Clear' first if you want to replace the subtree.");
return;
}
@@ -224,10 +205,6 @@ Editor.prototype.select_refinement=function(fun) {
if (blank) {
t.ast.removeChildren();
// Get new function arguments
var def = t.grammar_constructors.funs[fun].def;
var typeobj = AST.parse_type_signature(def);
// Add dependent type placeholders
if (typeobj.deps.length > 0) {
alert("the syntax editor current doesn't support dependent types");
@@ -255,7 +232,7 @@ Editor.prototype.select_refinement=function(fun) {
Editor.prototype.update_current_node=function(newID) {
with(this) {
if (newID)
ast.current = new NodeID(newID);
ast.setCurrentID(newID);
redraw_tree();
get_refinements();
}
@@ -269,14 +246,14 @@ Editor.prototype.redraw_tree=function() {
var label =
((node.fun) ? node.fun : "?") + " : " +
((node.cat) ? node.cat : "?");
var current = id.equals(t.ast.current);
var current = id.equals(t.ast.getCurrentID());
var element = elem("a", {class:(current?"current":"")}, [text(label)]);
element.onclick = function() {
t.update_current_node(id);
}
container2.appendChild( element );
for (i in node.children) {
for (var i in node.children) {
var newid = new NodeID(id);
newid.add(parseInt(i));
visit(container2, newid, node.children[i]);
@@ -311,7 +288,7 @@ Editor.prototype.update_linearisation=function(){
t.server.linearize(args, function(data){
clear(t.ui.lin);
var tbody=empty("tbody");
for (i in data) {
for (var i in data) {
var lang = data[i].to;
if (t.gm.languages.length < 1 || elem(lang, t.gm.languages)) {
tbody.appendChild(row(lang, data[i].text))
@@ -327,7 +304,7 @@ Editor.prototype.clear_node = function() {
t.ast.removeChildren();
t.ast.setFun(null);
t.redraw_tree();
// t.get_refinements();
t.get_refinements();
}
// Generate random subtree from current node
@@ -364,8 +341,8 @@ Editor.prototype.import_ast = function(abstr) {
/// TODO: traverse only subtree, not everything!
t.ast.traverse(function(node){
if (!node.fun) return;
var info = t.lookup_fun(node.fun);
node.cat = info.cat;
var typeobj = t.lookup_fun(node.fun);
node.cat = typeobj.ret;
});
t.redraw_tree();
t.update_linearisation();
@@ -373,13 +350,3 @@ Editor.prototype.import_ast = function(abstr) {
server.pgf_call("abstrjson", args, cont);
}
// Look up information for a function
Editor.prototype.lookup_fun = function(fun) {
var t = this;
var def = t.grammar_constructors.funs[fun].def;
var typeobj = AST.parse_type_signature(def);
return {
cat: typeobj.ret
}
}