A central repository for storing user-defined matchers.

Kiwi/KWMatchers.h

@@ -8,6 +8,26 @@
 
 #import <Foundation/Foundation.h>
 
-@interface KWMatchers : NSObject
+@class KWUserDefinedMatcherBuilder;
 
+typedef void (^KWMatchersBuildingBlock)(KWUserDefinedMatcherBuilder *);
+
+@class KWUserDefinedMatcher;
+
+@interface KWMatchers : NSObject {
+  NSMutableDictionary *userDefinedMatchers;
+}
++ (id)matchers;
+
+#pragma mark -
+#pragma mark Defining Matchers
+
++ (void)defineMatcher:(NSString *)selectorString as:(KWMatchersBuildingBlock)block;
+- (void)defineMatcher:(NSString *)selectorString as:(KWMatchersBuildingBlock)block;
+- (void)addUserDefinedMatcherBuilder:(KWUserDefinedMatcherBuilder *)builder;
+
+#pragma mark -
+#pragma mark Building Matchers
+
+- (KWUserDefinedMatcher *)matcherForSelector:(SEL)selector subject:(id)subject;
 @end

Kiwi/KWMatchers.m

@@ -7,17 +7,60 @@
 //
 
 #import "KWMatchers.h"
+#import "KWUserDefinedMatcher.h"
 
 @implementation KWMatchers
 
-- (id)init
-{
-    self = [super init];
-    if (self) {
-        // Initialization code here.
+#pragma mark -
+#pragma mark Singleton implementation
+
+static id sharedMatchers = nil;
+
++ (void)initialize {
+  if (self == [KWMatchers class]) {
+    sharedMatchers = [[self alloc] init];
+  }
+}
+
++ (id)matchers {
+  return sharedMatchers;
+}
+
+- (id)init {
+    if ((self = [super init])) {
+        userDefinedMatchers = [[NSMutableDictionary alloc] init];
     }
-
     return self;
 }
 
+#pragma mark -
+#pragma mark Defining Matchers
+
++ (void)defineMatcher:(NSString *)selectorString as:(KWMatchersBuildingBlock)block {
+    [[self matchers] defineMatcher:selectorString as:block];
+}
+
+- (void)defineMatcher:(NSString *)selectorString as:(KWMatchersBuildingBlock)block {
+    KWUserDefinedMatcherBuilder *builder = [KWUserDefinedMatcherBuilder builderForSelector:NSSelectorFromString(selectorString)];
+    block(builder);
+    [userDefinedMatchers setObject:builder forKey:builder.key];
+}
+
+- (void)addUserDefinedMatcherBuilder:(KWUserDefinedMatcherBuilder *)builder {
+    [userDefinedMatchers setObject:builder forKey:builder.key];
+}
+
+#pragma mark -
+#pragma mark Building Matchers
+
+- (KWUserDefinedMatcher *)matcherForSelector:(SEL)selector subject:(id)subject {
+    KWUserDefinedMatcherBuilder *builder = [userDefinedMatchers objectForKey:NSStringFromSelector(selector)];
+
+    if (builder == nil)
+        return nil;
+
+    return [builder buildMatcherWithSubject:subject];
+}
+
+
 @end

Kiwi/Kiwi.h

@@ -65,6 +65,7 @@
 #import "KWStringUtilities.h"
 #import "KWStub.h"
 #import "KWTestCase.h"
+#import "KWUserDefinedMatcher.h"
 #import "KWValue.h"
 #import "KWVerifying.h"