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JavaScript: change Fun.toString to print(). Metavariables in abstract syntax are now Funs with name ?

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This commit is contained in:
bringert
2006-12-15 17:25:45 +00:00
parent 022e856e28
commit 3cf9e25225
1 changed files with 5 additions and 5 deletions
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10
lib/javascript/gflib.js
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@@ -3,12 +3,12 @@
function Fun(name) {
this.name = name;
}
Fun.prototype.toString = function () { return this.show(0); } ;
Fun.prototype.print = function () { return this.show(0); } ;
Fun.prototype.show = function (prec) {
var s = this.name;
var cs = this.getChildren();
for (var c in cs) {
s += " " + c.show(1);
for (var i in cs) {
s += " " + cs[i].show(1);
}
if (prec > 0 && cs.length > 0) {
s = "(" + s + ")" ;
@@ -36,7 +36,7 @@ Fun.prototype.getChildren = function () {
/* Hack to get around the fact that our SISR doesn't build real Fun objects. */
function copyTree(x) {
if (typeof x == 'string' && x == '?') {
return '?';
return new Fun('?');
} else {
var t = new Fun(x.name);
for (var i = 0; ; i++) {
@@ -116,7 +116,7 @@ Linearizer.prototype.rule = function (name, cs) { return this.rules[name](cs); }
Linearizer.prototype.addRule = function (name, f) { this.rules[name] = f; };
Linearizer.prototype.linearize = function (tree) { return this.linearizeToTerm(tree).print(); };
Linearizer.prototype.linearizeToTerm = function (tree) {
if (typeof tree == 'string' && tree == '?') {
if (tree.name == '?') {
return new Meta();
} else {
var cs = tree.getChildren();