Inject a per-runable pretty printer into MatchersUtil

This will allow us to add support for custom object formatters, which
will be a per-runable resource like custom matchers, by injecting them
into the pretty-printer.

src/core/PrettyPrinter.js

@@ -1,5 +1,5 @@
-getJasmineRequireObj().pp = function(j$) {
-  function PrettyPrinter() {
+getJasmineRequireObj().makePrettyPrinter = function(j$) {
+  function SinglePrettyPrintRun() {
     this.ppNestLevel_ = 0;
     this.seen = [];
     this.length = 0;
@@ -21,7 +21,7 @@ getJasmineRequireObj().pp = function(j$) {
     }
   }
 
-  PrettyPrinter.prototype.format = function(value) {
+  SinglePrettyPrintRun.prototype.format = function(value) {
     this.ppNestLevel_++;
     try {
       if (j$.util.isUndefined(value)) {
@@ -95,7 +95,7 @@ getJasmineRequireObj().pp = function(j$) {
     }
   };
 
-  PrettyPrinter.prototype.iterateObject = function(obj, fn) {
+  SinglePrettyPrintRun.prototype.iterateObject = function(obj, fn) {
     var objKeys = keys(obj, j$.isArray_(obj));
     var isGetter = function isGetter(prop) {};
 
@@ -114,15 +114,15 @@ getJasmineRequireObj().pp = function(j$) {
     return objKeys.length > length;
   };
 
-  PrettyPrinter.prototype.emitScalar = function(value) {
+  SinglePrettyPrintRun.prototype.emitScalar = function(value) {
     this.append(value);
   };
 
-  PrettyPrinter.prototype.emitString = function(value) {
+  SinglePrettyPrintRun.prototype.emitString = function(value) {
     this.append("'" + value + "'");
   };
 
-  PrettyPrinter.prototype.emitArray = function(array) {
+  SinglePrettyPrintRun.prototype.emitArray = function(array) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Array');
       return;
@@ -158,7 +158,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' ]');
   };
 
-  PrettyPrinter.prototype.emitSet = function(set) {
+  SinglePrettyPrintRun.prototype.emitSet = function(set) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Set');
       return;
@@ -183,7 +183,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
-  PrettyPrinter.prototype.emitMap = function(map) {
+  SinglePrettyPrintRun.prototype.emitMap = function(map) {
     if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
       this.append('Map');
       return;
@@ -208,7 +208,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
-  PrettyPrinter.prototype.emitObject = function(obj) {
+  SinglePrettyPrintRun.prototype.emitObject = function(obj) {
     var ctor = obj.constructor,
       constructorName;
 
@@ -244,7 +244,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' })');
   };
 
-  PrettyPrinter.prototype.emitTypedArray = function(arr) {
+  SinglePrettyPrintRun.prototype.emitTypedArray = function(arr) {
     var constructorName = j$.fnNameFor(arr.constructor),
       limitedArray = Array.prototype.slice.call(
         arr,
@@ -260,7 +260,7 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(constructorName + ' [ ' + itemsString + ' ]');
   };
 
-  PrettyPrinter.prototype.emitDomElement = function(el) {
+  SinglePrettyPrintRun.prototype.emitDomElement = function(el) {
     var tagName = el.tagName.toLowerCase(),
       attrs = el.attributes,
       i,
@@ -286,7 +286,11 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(out);
   };
 
-  PrettyPrinter.prototype.formatProperty = function(obj, property, isGetter) {
+  SinglePrettyPrintRun.prototype.formatProperty = function(
+    obj,
+    property,
+    isGetter
+  ) {
     this.append(property);
     this.append(': ');
     if (isGetter) {
@@ -296,7 +300,7 @@ getJasmineRequireObj().pp = function(j$) {
     }
   };
 
-  PrettyPrinter.prototype.append = function(value) {
+  SinglePrettyPrintRun.prototype.append = function(value) {
     // This check protects us from the rare case where an object has overriden
     // `toString()` with an invalid implementation (returning a non-string).
     if (typeof value !== 'string') {
@@ -360,9 +364,12 @@ getJasmineRequireObj().pp = function(j$) {
 
     return extraKeys;
   }
-  return function(value) {
-    var prettyPrinter = new PrettyPrinter();
-    prettyPrinter.format(value);
-    return prettyPrinter.stringParts.join('');
+
+  return function() {
+    return function(value) {
+      var prettyPrinter = new SinglePrettyPrintRun();
+      prettyPrinter.format(value);
+      return prettyPrinter.stringParts.join('');
+    };
   };
 };