Refactoring property definition code

src/js/parser/javascript/charset.js

@@ -3,6 +3,21 @@ import Q from 'q';
 export default {
   type: 'charset',
 
+  definedProperties: {
+    _anchor: {
+      get: function() {
+        var box = this.container.getBBox(),
+            matrix = this.transform().localMatrix;
+
+        return {
+          ax: box.x,
+          ax2: box.x2,
+          ay: matrix.y(0, this.partContainer.getBBox().cy)
+        };
+      }
+    }
+  },
+
   _render() {
     this.partContainer = this.container.group();
 
@@ -29,18 +44,5 @@ export default {
         return part.textValue;
       }
     });
-
-    Object.defineProperty(this, '_anchor', {
-      get: function() {
-        var box = this.container.getBBox(),
-            matrix = this.transform().localMatrix;
-
-        return {
-          ax: box.x,
-          ax2: box.x2,
-          ay: matrix.y(0, this.partContainer.getBBox().cy)
-        };
-      }
-    });
   }
 };

src/js/parser/javascript/match.js

@@ -4,6 +4,22 @@ import Q from 'q';
 export default {
   type: 'match',
 
+  definedProperties: {
+    _anchor: {
+      get: function() {
+        var start = this.normalizeBBox(_.first(this.items).getBBox()),
+            end = this.normalizeBBox(_.last(this.items).getBBox()),
+            matrix = this.transform().localMatrix;
+
+        return {
+          ax: matrix.x(start.ax, start.ay),
+          ax2: matrix.x(end.ax2, end.ay),
+          ay: matrix.y(start.ax, start.ay)
+        };
+      }
+    }
+  },
+
   _render() {
     var start, end,
         partPromises;
@@ -66,19 +82,5 @@ export default {
     if (!this.anchorStart && !this.anchorEnd && this.parts.length === 1) {
       this.proxy = this.parts[0];
     }
-
-    Object.defineProperty(this, '_anchor', {
-      get: function() {
-        var start = this.normalizeBBox(_.first(this.items).getBBox()),
-            end = this.normalizeBBox(_.last(this.items).getBBox()),
-            matrix = this.transform().localMatrix;
-
-        return {
-          ax: matrix.x(start.ax, start.ay),
-          ax2: matrix.x(end.ax2, end.ay),
-          ay: matrix.y(start.ax, start.ay)
-        };
-      }
-    });
   }
 };

src/js/parser/javascript/match_fragment.js

@@ -3,6 +3,21 @@ import _ from 'lodash';
 export default {
   type: 'match-fragment',
 
+  definedProperties: {
+    _anchor: {
+      get: function() {
+        var anchor = this.content.anchor,
+            matrix = this.transform().localMatrix;
+
+        return _.extend(anchor, {
+          ax: matrix.x(anchor.ax, anchor.ay),
+          ax2: matrix.x(anchor.ax2, anchor.ay),
+          ay: matrix.y(anchor.ax, anchor.ay)
+        });
+      }
+    }
+  },
+
   _render() {
     return this.content.render(this.container.group())
       .then(() => {
@@ -64,18 +79,5 @@ export default {
     } else {
       this.proxy = this.content;
     }
-
-    Object.defineProperty(this, '_anchor', {
-      get: function() {
-        var anchor = this.content.anchor,
-            matrix = this.transform().localMatrix;
-
-        return _.extend(anchor, {
-          ax: matrix.x(anchor.ax, anchor.ay),
-          ax2: matrix.x(anchor.ax2, anchor.ay),
-          ay: matrix.y(anchor.ax, anchor.ay)
-        });
-      }
-    });
   }
 };

src/js/parser/javascript/node.js

@@ -15,9 +15,14 @@ export default class Node {
 
   set module(mod) {
     _.extend(this, mod);
+
     if (this.setup) {
       this.setup();
     }
+
+    _.forOwn(this.definedProperties || {}, (methods, name) => {
+      Object.defineProperty(this, name, methods);
+    });
   }
 
   set container(container) {

src/js/parser/javascript/repeat.js

@@ -7,14 +7,8 @@ function formatTimes(times) {
 }
 
 export default {
-  setup() {
-    this.minimum = this.properties.spec.minimum;
-    this.maximum = this.properties.spec.maximum;
-    this.greedy = (this.properties.greedy.textValue === '');
-    this.hasSkip = this.minimum === 0;
-    this.hasLoop = this.maximum === -1 || this.maximum > 1;
-
-    Object.defineProperty(this, 'contentPosition', {
+  definedProperties: {
+    contentPosition: {
       get: function() {
         var x = 0, y = 0;
 
@@ -29,9 +23,9 @@ export default {
 
         return Snap.matrix().translate(x, y);
       }
-    });
+    },
 
-    Object.defineProperty(this, 'label', {
+    label: {
       get: function() {
         if (this.minimum >= 2 && this.maximum === -1) {
           return `${this.minimum - 1}+ times`;
@@ -45,6 +39,14 @@ export default {
           }
         }
       }
-    });
+    }
+  },
+
+  setup() {
+    this.minimum = this.properties.spec.minimum;
+    this.maximum = this.properties.spec.maximum;
+    this.greedy = (this.properties.greedy.textValue === '');
+    this.hasSkip = this.minimum === 0;
+    this.hasLoop = this.maximum === -1 || this.maximum > 1;
   }
 }

src/js/parser/javascript/subexp.js

@@ -5,6 +5,21 @@ var groupCounter = 1;
 export default {
   type: 'subexp',
 
+  definedProperties: {
+    _anchor: {
+      get: function() {
+        var anchor = this.regexp.anchor,
+            matrix = this.transform().localMatrix;
+
+        return _.extend(anchor, {
+          ax: matrix.x(anchor.ax, anchor.ay),
+          ax2: matrix.x(anchor.ax2, anchor.ay),
+          ay: matrix.y(anchor.ax, anchor.ay)
+        });
+      }
+    }
+  },
+
   labelMap: {
     '?:': '',
     '?=': 'positive lookahead',
@@ -34,18 +49,5 @@ export default {
     if (!this.label) {
       this.proxy = this.regexp;
     }
-
-    Object.defineProperty(this, '_anchor', {
-      get: function() {
-        var anchor = this.regexp.anchor,
-            matrix = this.transform().localMatrix;
-
-        return _.extend(anchor, {
-          ax: matrix.x(anchor.ax, anchor.ay),
-          ax2: matrix.x(anchor.ax2, anchor.ay),
-          ay: matrix.y(anchor.ax, anchor.ay)
-        });
-      }
-    });
   }
 };