Merge branch 'parsetree-examples'

examples/block-expansion.jade

@@ -0,0 +1,13 @@
+ul
+  li
+    a(href="#") foo
+  li
+    a(href="#") bar
+  li
+    a(href="#") baz
+
+  // is the same as
+
+  li> a(href="#") foo
+  li> a(href="#") bar
+  li> a(href="#") baz

examples/block-expansion.js

@@ -0,0 +1,11 @@
+
+/**
+ * Module dependencies.
+ */
+
+var jade = require('./../lib/jade');
+
+jade.renderFile(__dirname + '/block-expansion.jade', function(err, html){
+    if (err) throw err;
+    console.log(html);
+});

examples/model.jade

@@ -0,0 +1,7 @@
+:model
+  form(user)
+  p
+    field(name)
+  p
+    field(email)
+  buttons

examples/model.js

@@ -0,0 +1,84 @@
+
+
+/**
+ * Module dependencies.
+ */
+
+var jade = require('./../lib/jade'),
+    Compiler = jade.Compiler,
+    nodes = jade.nodes;
+
+var options = {
+    locals: {
+        user: {
+            name: 'tj',
+            email: 'vision-media.ca',
+            errors: { email: 'Invalid email' },
+            new: true
+        }
+    }
+};
+
+jade.renderFile(__dirname + '/model.jade', options, function(err, html){
+    if (err) throw err;
+    console.log(html);
+});
+
+jade.filters.model = function(block, compiler){
+    return new Visitor(block).compile();
+};
+
+function Visitor(node) {
+    this.node = node;
+}
+
+Visitor.prototype.__proto__ = Compiler.prototype;
+
+Visitor.prototype.visitTag = function(node){
+    var parent = Compiler.prototype.visitTag;
+    switch (node.name) {
+        case 'form':
+            this.record = node.attrs[0].name;
+            node = new nodes.Tag('form');
+            node.addAttribute('id', '"' + this.record + '-model-form"');
+            node.addAttribute('method', '"post"');
+            parent.call(this, node);
+            break;
+        case 'field':
+            var name = node.attrs[0].name,
+                capitalized = name.charAt(0).toUpperCase() + name.slice(1);
+
+            var label = new nodes.Tag('label');
+            label.addAttribute('for', '"' + this.record + '[' + name + ']"');
+            label.block = new nodes.Block;
+            label.block.push(new nodes.Text(capitalized + ':'));
+            parent.call(this, label);
+
+            node = new nodes.Tag('input');
+            node.addAttribute('type', '"text"');
+            node.addAttribute('name', '"' + this.record + '[' + name + ']"');
+            node.addAttribute('value', this.record + '.' + name);
+            parent.call(this, node);
+
+            var err = this.record + '.errors.' + name;
+            node = new nodes.Code('if (' + err + ')', false, false);
+            node.block = new nodes.Block;
+            var p = new nodes.Tag('p');
+            p.block = new nodes.Block;
+            p.block.push(new nodes.Code(err, true, true));
+            node.block.push(p);
+            Visitor.prototype.visitCode.call(this, node);
+            break;
+        case 'buttons':
+            node = new nodes.Tag('input');
+            node.addAttribute('type', '"submit"');
+            node.addAttribute('value', this.record + '.new ? "Save" : "Update"');
+            var p = new nodes.Tag('p');
+            p.addAttribute('class', '"buttons"');
+            p.block.push(node);
+            parent.call(this, p);
+            break;
+        default:
+            parent.call(this, node);
+    }
+};

examples/parsetree.js

@@ -42,5 +42,4 @@ jade.filters.conditionals = function(block, compiler){
         }
     });
     compiler.visit(block);
-    return '';
 };

lib/compiler.js

@@ -28,6 +28,7 @@ var nodes = require('./nodes'),
  */
 
 var Compiler = module.exports = function Compiler(node, options) {
+    options = options || {};
     this.node = node;
     this.pretty = options.pretty;
     this.indents = options.indents || 0;