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exports.attach = function(Handlebars) {
// BEGIN(BROWSER)
Handlebars.AST = {};
Handlebars.AST.ProgramNode = function(statements, inverse) {
this.type = "program";
this.statements = statements;
if(inverse) { this.inverse = new Handlebars.AST.ProgramNode(inverse); }
};
Handlebars.AST.MustacheNode = function(rawParams, hash, unescaped) {
this.type = "mustache";
this.escaped = !unescaped;
this.hash = hash;
var id = this.id = rawParams[0];
var params = this.params = rawParams.slice(1);
// a mustache is an eligible helper if:
// * its id is simple (a single part, not `this` or `..`)
var eligibleHelper = this.eligibleHelper = id.isSimple;
// a mustache is definitely a helper if:
// * it is an eligible helper, and
// * it has at least one parameter or hash segment
this.isHelper = eligibleHelper && (params.length || hash);
// if a mustache is an eligible helper but not a definite
// helper, it is ambiguous, and will be resolved in a later
// pass or at runtime.
};
Handlebars.AST.PartialNode = function(id, context) {
this.type = "partial";
// TODO: disallow complex IDs
this.id = id;
this.context = context;
};
var verifyMatch = function(open, close) {
if(open.original !== close.original) {
throw new Handlebars.Exception(open.original + " doesn't match " + close.original);
}
};
Handlebars.AST.BlockNode = function(mustache, program, inverse, close) {
verifyMatch(mustache.id, close);
this.type = "block";
this.mustache = mustache;
this.program = program;
this.inverse = inverse;
if (this.inverse && !this.program) {
this.isInverse = true;
}
};
Handlebars.AST.ContentNode = function(string) {
this.type = "content";
this.string = string;
};
Handlebars.AST.HashNode = function(pairs) {
this.type = "hash";
this.pairs = pairs;
};
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") { this.isScoped = true; }
else { dig.push(part); }
}
this.parts = dig;
this.string = dig.join('.');
this.depth = depth;
// an ID is simple if it only has one part, and that part is not
// `..` or `this`.
this.isSimple = parts.length === 1 && !this.isScoped && depth === 0;
};
Handlebars.AST.DataNode = function(id) {
this.type = "DATA";
this.id = id;
};
Handlebars.AST.StringNode = function(string) {
this.type = "STRING";
this.string = string;
};
Handlebars.AST.IntegerNode = function(integer) {
this.type = "INTEGER";
this.integer = integer;
};
Handlebars.AST.BooleanNode = function(bool) {
this.type = "BOOLEAN";
this.bool = bool;
};
Handlebars.AST.CommentNode = function(comment) {
this.type = "comment";
this.comment = comment;
};
// END(BROWSER)
return Handlebars;
};
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