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