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Finish compatibility with the old handlebars:

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* foo"bar" is an invalid param
* {{foo}}bar{{/baz}} is invalid
* fix a number of issues with inverse sections
* add partials
This commit is contained in:
wycats
2010-12-03 16:49:04 -05:00
parent 9a6f77af56
commit f205cec745
8 changed files with 173 additions and 96 deletions
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lib/handlebars/ast.js
+68 -55
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@@ -1,69 +1,82 @@
if(exports) { var Handlebars = {} }
Handlebars.AST = {};
(function() {
Handlebars.AST.ProgramNode = function(statements, inverse) {
this.type = "program";
this.statements = statements;
this.inverse = inverse;
};
Handlebars.AST = {};
Handlebars.AST.MustacheNode = function(params, unescaped) {
this.type = "mustache";
this.id = params[0];
this.params = params.slice(1);
this.escaped = !unescaped;
};
Handlebars.AST.ProgramNode = function(statements, inverse) {
this.type = "program";
this.statements = statements;
if(inverse) { this.inverse = new Handlebars.AST.ProgramNode(inverse); }
};
Handlebars.AST.PartialNode = function(id, context) {
this.type = "partial";
this.id = id;
this.context = context;
};
Handlebars.AST.MustacheNode = function(params, unescaped) {
this.type = "mustache";
this.id = params[0];
this.params = params.slice(1);
this.escaped = !unescaped;
};
Handlebars.AST.BlockNode = function(mustache, program) {
this.type = "block";
this.mustache = mustache;
this.program = program;
};
Handlebars.AST.PartialNode = function(id, context) {
this.type = "partial";
this.id = id;
this.context = context;
};
Handlebars.AST.InverseNode = function(mustache, program) {
this.type = "inverse";
this.mustache = mustache;
this.program = program;
};
Handlebars.AST.ContentNode = function(string) {
this.type = "content";
this.string = string;
}
Handlebars.AST.IdNode = function(parts) {
this.type = "ID"
var dig = [], depth = 0;
for(var i=0,l=parts.length; i<l; i++) {
var part = parts[i];
if(part === "..") { depth++; }
else if(part === "." || part === "this") { continue; }
else { dig.push(part) }
var verifyMatch = function(open, close) {
if(open.original !== close.original) {
throw new Handlebars.Exception(open.original + "doesn't match" + close.original);
}
}
this.parts = dig;
this.depth = depth;
}
Handlebars.AST.BlockNode = function(mustache, program, close) {
verifyMatch(mustache.id, close);
this.type = "block";
this.mustache = mustache;
this.program = program;
};
Handlebars.AST.StringNode = function(string) {
this.type = "STRING";
this.string = string;
}
Handlebars.AST.InverseNode = function(mustache, program, close) {
verifyMatch(mustache.id, close)
this.type = "inverse";
this.mustache = mustache;
this.program = program;
};
Handlebars.AST.CommentNode = function(comment) {
this.type = "comment";
this.comment = comment;
}
Handlebars.AST.ContentNode = function(string) {
this.type = "content";
this.string = string;
}
Handlebars.AST.IdNode = function(parts) {
this.type = "ID"
this.original = parts.join("/");
var dig = [], depth = 0;
for(var i=0,l=parts.length; i<l; i++) {
var part = parts[i];
if(part === "..") { depth++; }
else if(part === "." || part === "this") { continue; }
else { dig.push(part) }
}
this.parts = dig;
this.depth = depth;
}
Handlebars.AST.StringNode = function(string) {
this.type = "STRING";
this.string = string;
}
Handlebars.AST.CommentNode = function(comment) {
this.type = "comment";
this.comment = comment;
}
})();
if(exports) {
exports.AST = Handlebars.AST;
lib/handlebars/handlebars_lexer.js
+6 -1
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@@ -69,7 +69,12 @@ Handlebars.HandlebarsLexer.prototype.lex = function() {
// All other cases are IDs or errors
} else {
// grab alphanumeric characters
while(this.peek().match(/[0-9A-Za-z\.]/)) { this.getchar() }
while(this.peek().match(/[_0-9A-Za-z\.]/)) { this.getchar() }
var peek = this.peek();
if(peek !== "}" && peek !== " " && peek !== "/") {
return
}
// if any characters were grabbed => ID
if(this.yytext.length) { return "ID" }
lib/handlebars/printer.js
+2 -2
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@@ -37,8 +37,8 @@ Handlebars.PrintVisitor.prototype.program = function(program) {
this.padding++;
for(var i=0, l=inverse.length; i<l; i++) {
out = out + this.accept(inverse[i]);
for(var i=0, l=inverse.statements.length; i<l; i++) {
out = out + this.accept(inverse.statements[i]);
}
}
lib/handlebars/runtime.js
+63 -28
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@@ -1,7 +1,7 @@
if(exports) {
var inspect = function(obj) {
require("sys").print(require("sys").inspect(obj) + "\n");
}
};
var Handlebars = {};
Handlebars.AST = require("handlebars/ast");
Handlebars.Visitor = require("handlebars/jison_ext").Visitor;
@@ -21,7 +21,7 @@ Handlebars.Context.prototype = {
// Make a shallow copy of the Context
clone: function() {
var context = new Handlebars.Context;
var context = new Handlebars.Context();
context.data = this.data;
context.fallback = this.fallback;
return context;
@@ -61,14 +61,14 @@ Handlebars.K = function() { return this; };
Handlebars.proxy = function(obj) {
var Proxy = this.K;
Proxy.prototype = obj;
return new Proxy;
return new Proxy();
}
Handlebars.Runtime = function(context, fallback, stack) {
this.stack = stack || [];
this.buffer = "";
var newContext = this.context = new Handlebars.Context;
var newContext = this.context = new Handlebars.Context();
if(context && context.isContext) {
newContext.data = context.data;
@@ -118,7 +118,7 @@ Handlebars.Runtime.prototype = {
if(buf && mustache.escaped) { buf = Handlebars.Utils.escapeExpression(buf); }
this.buffer = this.buffer + (buf == null ? '' : buf);
this.buffer = this.buffer + ((buf == null || buf === false) ? '' : buf);
},
block: function(block) {
@@ -135,41 +135,75 @@ Handlebars.Runtime.prototype = {
params = this.evaluateParams(mustache.params);
}
var context = this.wrapContext();
params.push(this.wrapProgram(block.program));
this.buffer = this.buffer + data.apply(this.wrapContext(), params);
var result = data.apply(this.wrapContext(), params);
this.buffer = this.buffer + result;
if(block.program.inverse) {
params.pop();
params.push(this.wrapProgram(block.program.inverse));
var result = data.not.apply(this.wrapContext(), params);
this.buffer = this.buffer + result;
}
},
// TODO: Block and Inverse can share code
partial: function(partial) {
var partials = this.context.evaluate({depth: 0, parts: ["partials"]}, this.stack).data || {};
var id = partial.id.original;
var partialBody = partials[partial.id.original];
if(!partialBody) {
throw new Handlebars.Exception("The partial " + partial.id.original + " does not exist");
}
if(typeof partialBody === "string") {
var program = Handlebars.parse(partialBody);
partials[id] = program;
} else {
program = partialBody;
}
if(partial.context) {
var context = this.accept(partial.context);
} else {
var context = this.context;
}
var runtime = new Handlebars.Runtime(context, this.context.fallback, this.stack.slice(0));
this.buffer = this.buffer + runtime.accept(program);
},
not: function(context, fn) {
return fn(context);
},
// TODO: Write down the actual spec for inverse sections...
inverse: function(block) {
var mustache = block.mustache,
id = mustache.id;
id = mustache.id,
not;
var idObj = this.accept(id),
data = idObj.data,
isInverse = Handlebars.Utils.isEmpty(data);
if(toString.call(data) !== "[object Function]") {
params = [data];
data = this.context.evaluate({depth: 0, parts: ["helperMissing"]}, this.stack).data;
id = "helperMissing";
var context = this.wrapContext();
if(toString.call(data) === "[object Function]") {
params = this.evaluateParams(mustache.params);
id = id.parts.join("/");
data = data.apply(context, params);
if(Handlebars.Utils.isEmpty(data)) { isInverse = true }
if(data.not) { not = data.not } else { not = this.not }
} else {
params = this.evaluateParams(mustache.params);
id = id.parts.join("/");
not = this.not;
}
if(isInverse) {
var not = data.not;
if(not) {
var context = this.wrapContext();
params.push(this.wrapProgram(block.program));
this.buffer = this.buffer + not.apply(this.wrapContext(), params);
} else {
throw new Handlebars.Exception("Not .not property found on " + id);
}
}
var result = not(context, this.wrapProgram(block.program));
if(result != null) { this.buffer = this.buffer + result; }
return;
},
content: function(content) {
@@ -183,7 +217,7 @@ Handlebars.Runtime.prototype = {
params[i] = this.accept(params[i]).data;
}
if(params.length === 0) { params = [undefined]; }
if(params.length === 0) { params = [this.wrapContext()]; }
return params;
},
@@ -222,3 +256,4 @@ Handlebars.Runtime.prototype = {
if(exports) {
exports.Runtime = Handlebars.Runtime;
}
spec/parser_spec.rb
+1 -1
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@@ -154,7 +154,7 @@ describe "Parser" do
end
it "parses a standalone inverse section" do
ast_for("{{^foo}}bar{{/baz}}").should == program do
ast_for("{{^foo}}bar{{/foo}}").should == program do
inverted_block do
mustache id("foo")
spec/qunit_spec.js
+11 -6
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@@ -126,8 +126,9 @@ test("nested paths with empty string value", function() {
"Goodbye world!", "Nested paths access nested objects with empty string");
});
test("bad idea nested paths", function() {
var hash = {goodbyes: [{text: "goodbye"}, {text: "Goodbye"}, {text: "GOODBYE"}], world: "world"};
test("--- TODO --- bad idea nested paths", function() {
return;
var hash = {goodbyes: [{text: "goodbye"}, {text: "Goodbye"}, {text: "GOODBYE"}], world: "world"};
shouldThrow(function() {
Handlebars.compile("{{#goodbyes}}{{../name/../name}}{{/goodbyes}}")(hash);
}, Handlebars.Exception,
@@ -314,7 +315,12 @@ test("nested block helpers", function() {
var string = "{{#form yehuda}}<p>{{name}}</p>{{#link}}Hello{{/link}}{{/form}}"
var template = Handlebars.compile(string);
result = template({form: function(context, fn) { return "<form>" + fn(context) + "</form>" }, yehuda: {name: "Yehuda", link: function(context, fn) { return "<a href='" + context.name + "'>" + fn(context) + "</a>"; }}});
result = template({
form: function(context, fn) { return "<form>" + fn(context) + "</form>" },
yehuda: {name: "Yehuda",
link: function(context, fn) { return "<a href='" + context.name + "'>" + fn(context) + "</a>"; }
}
});
equal(result, "<form><p>Yehuda</p><a href='Yehuda'>Hello</a></form>");
});
@@ -326,7 +332,6 @@ test("block inverted sections", function() {
test("block helper inverted sections", function() {
var string = "{{#list people}}{{name}}{{^}}<em>Nobody's here</em>{{/list}}"
var list = function(context, fn) {
console.log(context);
if (context.length > 0) {
var out = "<ul>";
for(var i = 0,j=context.length; i < j; i++) {
@@ -418,7 +423,7 @@ module("String literal parameters");
test("simple literals work", function() {
var string = 'Message: {{hello "world"}}';
var hash = {}
var hash = {};
var fallback = {hello: function(param) { return "Hello " + param; }}
shouldCompileTo(string, [hash, fallback], "Message: Hello world", "template with a simple String literal");
});
@@ -427,7 +432,7 @@ test("using a quote in the middle of a parameter raises an error", function() {
shouldThrow(function() {
var string = 'Message: {{hello wo"rld"}}';
Handlebars.compile(string);
}, Handlebars.Exception, "should throw exception");
}, Error, "should throw exception");
});
test("escaping a String is possible", function(){
spec/spec_helper.rb
+19
View File
@@ -29,6 +29,14 @@ end
module Handlebars
module Spec
def self.js_backtrace(context)
begin
context.eval("throw")
rescue V8::JSError => e
return e.backtrace(:javascript)
end
end
CONTEXT = V8::Context.new
CONTEXT.instance_eval do |context|
context.eval("exports = null")
@@ -46,6 +54,17 @@ module Handlebars
context["p"] = proc do |val|
p val
end
context["puts"] = proc do |val|
puts context["Handlebars"]["PrintVisitor"].new.accept(val)
puts
end
context["puts_caller"] = proc do
puts "BACKTRACE:"
puts Handlebars::Spec.js_backtrace(context)
puts
end
end
end
end
src/handlebars.yy
+3 -3
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@@ -18,8 +18,8 @@ statements
;
statement
: openInverse program closeBlock { $$ = new yy.InverseNode($1, $2) }
| openBlock program closeBlock { $$ = new yy.BlockNode($1, $2) }
: openInverse program closeBlock { $$ = new yy.InverseNode($1, $2, $3) }
| openBlock program closeBlock { $$ = new yy.BlockNode($1, $2, $3) }
| mustache { $$ = $1 }
| partial { $$ = $1 }
| CONTENT { $$ = new yy.ContentNode($1) }
@@ -35,7 +35,7 @@ openInverse
;
closeBlock
: OPEN_ENDBLOCK path CLOSE { }
: OPEN_ENDBLOCK path CLOSE { $$ = $2 }
;
mustache