1 files changed, 62 insertions, 0 deletions

diff --git a/node_modules/montage/core/selector/parser.js b/node_modules/montage/core/selector/parser.js
new file mode 100644
index 00000000..b674218c
--- /dev/null
+++ b/node_modules/montage/core/selector/parser.js
@@ -0,0 +1,62 @@
+
+var Montage = require("montage").Montage;
+
+var Parser = exports.Parser = Montage.create(Montage, {
+
+    newWithLanguage: {
+        value: function (language, callback) {
+            var self = Montage.create(this);
+            self.tokens = [];
+            self.state = language.parsePrevious(function (syntax) {
+                callback && callback(syntax);
+                return language.parseEof();
+            });
+            return self;
+        }
+    },
+
+    state: {
+        value: null,
+        writable: true
+    },
+
+    emit: {
+        value: function (token) {
+            try {
+                this.tokens.push(token);
+                this.state = this.state(token);
+                return this;
+            } catch (exception) {
+                if (exception instanceof SyntaxError) {
+                    throw new SyntaxError(exception.message + ' at ' + this.format());
+                } else {
+                    throw exception;
+                }
+            }
+        }
+    },
+
+    state: {
+        value: null,
+        writable: true
+    },
+
+    syntax: {
+        value: null,
+        writable: true,
+        serializable: true
+    },
+
+    format: {
+        value: function () {
+            return this.tokens.reduce(function (hither, token) {
+                if (token.type === 'literal') {
+                    return hither + '(' + JSON.stringify(token.value) + ')';
+                } else {
+                    return hither + '.' + token.type;
+                }
+            }, 'Selector');
+        }
+    }
+
+});