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kishikawakatsumikishikawakatsumi
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Update support for 64-bit devices.
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11 files changed

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-316
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11 files changed

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-316
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‎Classes/JSBMessageForwarding.h‎

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//
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// JSBMessageForwarding.h
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// JavaScriptBridge
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//
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// Created by kishikawa katsumi on 2014/01/04.
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// Copyright (c) 2014 kishikawa katsumi. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import "JSBScriptingSupport.h"
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@import ObjectiveC;
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@import JavaScriptCore;
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static NSString *mangledNameFromClass(Class cls)
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{
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return [NSString stringWithFormat:@"__JSB_%@", NSStringFromClass(cls)];
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}
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static NSString *propertyNameFromSelector(SEL selector)
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{
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NSArray *split = [NSStringFromSelector(selector) componentsSeparatedByString:@":"];
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NSMutableString *propertyName = [[NSMutableString alloc] init];
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for (NSInteger i = 0; i < split.count; i++) {
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NSString *string = split[i];
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if (i > 0) {
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if (string.length > 0) {
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NSString *firstCharacter = [string substringWithRange:NSMakeRange(0, 1)];
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[propertyName appendString:[string stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:firstCharacter.uppercaseString]];
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}
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} else {
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[propertyName appendString:string];
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}
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}
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return propertyName;
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}
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#pragma mark -
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static void invokeSuper(NSInvocation *inv)
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{
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SEL sel = NSSelectorFromString(@"invokeSuper");
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NSMethodSignature *signature = [inv methodSignatureForSelector:sel];
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NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
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invocation.selector = sel;
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invocation.target = inv;
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[invocation invoke];
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}
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static NSArray *extractArguments(NSInvocation *invocation)
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{
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NSMethodSignature *methodSignature = invocation.methodSignature;
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NSUInteger numberOfArguments = methodSignature.numberOfArguments;
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NSMutableArray *arguments = [[NSMutableArray alloc] initWithCapacity:numberOfArguments];
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for (NSUInteger i = 2; i < numberOfArguments; i++) {
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const char *type = [methodSignature getArgumentTypeAtIndex:i];
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if (strcmp(type, @encode(char)) == 0) {
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char argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(bool)) == 0) {
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bool argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(short)) == 0) {
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short argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(int)) == 0) {
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int argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(long)) == 0) {
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long argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(long long)) == 0) {
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long long argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(unsigned char)) == 0) {
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unsigned char argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(unsigned short)) == 0) {
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unsigned short argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(unsigned int)) == 0) {
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unsigned int argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(unsigned long)) == 0) {
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unsigned long argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(unsigned long long)) == 0) {
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unsigned long long argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(float)) == 0) {
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float argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(double)) == 0) {
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double argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(char *)) == 0) {
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char *argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(BOOL)) == 0) {
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BOOL argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(void *)) == 0) {
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void *argument;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:(__bridge id)argument];
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} else if (strcmp(type, @encode(id)) == 0) {
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id __unsafe_unretained argument = nil;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:argument];
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} else if (strcmp(type, @encode(SEL)) == 0) {
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const char *argument = nil;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:@(argument)];
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} else if (strcmp(type, @encode(Class)) == 0) {
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Class __unsafe_unretained argument = nil;
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[invocation getArgument:&argument atIndex:i];
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[arguments addObject:argument];
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}
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}
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return arguments.copy;
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}
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static void setReturnValue(JSValue *value, NSInvocation *invocation)
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{
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NSMethodSignature *methodSignature = invocation.methodSignature;
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const char *type = methodSignature.methodReturnType;
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if (strcmp(type, @encode(void)) == 0) {
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return;
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}
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if (strcmp(type, @encode(char)) == 0 ||
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strcmp(type, @encode(short)) == 0 ||
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strcmp(type, @encode(int)) == 0 ||
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strcmp(type, @encode(unsigned char)) == 0 ||
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strcmp(type, @encode(unsigned short)) == 0 ||
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strcmp(type, @encode(unsigned int)) == 0) {
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int32_t returnValue = value.toInt32;
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[invocation setReturnValue:&returnValue];
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} else if (strcmp(type, @encode(long)) == 0 ||
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strcmp(type, @encode(unsigned long)) == 0 ||
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strcmp(type, @encode(long long)) == 0 ||
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strcmp(type, @encode(unsigned long long)) == 0) {
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int64_t returnValue = value.toInt32;
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[invocation setReturnValue:&returnValue];
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} else if (strcmp(type, @encode(bool)) == 0 ||
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strcmp(type, @encode(BOOL)) == 0) {
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BOOL returnValue = value.toBool;
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[invocation setReturnValue:&returnValue];
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} else if (strcmp(type, @encode(float)) == 0) {
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float returnValue = value.toDouble;
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[invocation setReturnValue:&returnValue];
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} else if (strcmp(type, @encode(double)) == 0) {
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double returnValue = value.toDouble;
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[invocation setReturnValue:&returnValue];
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} else {
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id __unsafe_unretained returnValue = value.toObject;
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[invocation setReturnValue:&returnValue];
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}
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}
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#pragma mark -
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static CGFloat tableViewHeightForRowAtIndexPath(id self, SEL _cmd, UITableView *tableView, NSIndexPath *indexPath)
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{
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JSContext *context = [JSBScriptingSupport globalContext];
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NSString *propertyName = propertyNameFromSelector(_cmd);
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JSValue *function = context[mangledNameFromClass([self class])][@"instanceMembers"][propertyName];
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if (!function.isUndefined) {
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JSValue *returnValue = [function callWithArguments:@[tableView, indexPath]];
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return returnValue.toDouble;
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}
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return 0.0f;
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}
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static CGFloat tableViewHeightForHeaderInSection(id self, SEL _cmd, UITableView *tableView, NSInteger section)
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{
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JSContext *context = [JSBScriptingSupport globalContext];
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NSString *propertyName = propertyNameFromSelector(_cmd);
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JSValue *function = context[mangledNameFromClass([self class])][@"instanceMembers"][propertyName];
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if (!function.isUndefined) {
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JSValue *returnValue = [function callWithArguments:@[tableView, @(section)]];
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return returnValue.toDouble;
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}
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return 0.0f;
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}
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static CGFloat tableViewHeightForFooterInSection(id self, SEL _cmd, UITableView *tableView, NSInteger section)
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{
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JSContext *context = [JSBScriptingSupport globalContext];
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NSString *propertyName = propertyNameFromSelector(_cmd);
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JSValue *function = context[mangledNameFromClass([self class])][@"instanceMembers"][propertyName];
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if (!function.isUndefined) {
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JSValue *returnValue = [function callWithArguments:@[tableView, @(section)]];
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return returnValue.toDouble;
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}
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return 0.0f;
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}
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#pragma mark -
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static void setupForwardingImplementations(Class targetClass, Class cls, JSValue *functions)
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{
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unsigned int count = 0;
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Method *methods = class_copyMethodList(cls, &count);
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for (unsigned int i = 0; i < count; i++) {
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Method m = methods[i];
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struct objc_method_description *description = method_getDescription(m);
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NSString *propertyName = propertyNameFromSelector(description->name);
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JSValue *function = functions[propertyName];
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if (!function.isUndefined) {
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if (strcmp(@encode(NSInteger), "q") == 0) { // for 64bit devices
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if (description->name == @selector(tableView:heightForRowAtIndexPath:)) {
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class_addMethod(targetClass, description->name, (IMP)tableViewHeightForRowAtIndexPath, description->types);
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continue;
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} else if (description->name == @selector(tableView:heightForHeaderInSection:)) {
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class_addMethod(targetClass, description->name, (IMP)tableViewHeightForHeaderInSection, description->types);
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continue;
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} else if (description->name == @selector(tableView:heightForFooterInSection:)) {
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class_addMethod(targetClass, description->name, (IMP)tableViewHeightForFooterInSection, description->types);
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continue;
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} else if (description->name == @selector(tableView:estimatedHeightForRowAtIndexPath:)) {
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class_addMethod(targetClass, description->name, (IMP)tableViewHeightForRowAtIndexPath, description->types);
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continue;
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} else if (description->name == @selector(tableView:estimatedHeightForHeaderInSection:)) {
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class_addMethod(targetClass, description->name, (IMP)tableViewHeightForHeaderInSection, description->types);
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continue;
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} else if (description->name == @selector(tableView:estimatedHeightForFooterInSection:)) {
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class_addMethod(targetClass, description->name, (IMP)tableViewHeightForFooterInSection, description->types);
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continue;
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}
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}
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class_addMethod(targetClass, description->name, _objc_msgForward, description->types);
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}
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}
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if (methods) {
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free(methods);
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}
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Class superClass = class_getSuperclass(cls);
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if (superClass) {
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setupForwardingImplementations(targetClass, superClass, functions);
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}
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}
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#pragma mark -
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static void forwardInvocation(id self, SEL _cmd, NSInvocation *invocation)
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{
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JSContext *context = [JSBScriptingSupport globalContext];
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if ([[self superclass] instancesRespondToSelector:invocation.selector]) {
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invokeSuper(invocation);
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}
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context[@"self"] = self;
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NSString *propertyName = propertyNameFromSelector(invocation.selector);
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JSValue *function = context[mangledNameFromClass([self class])][@"instanceMembers"][propertyName];
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if (!function.isUndefined) {
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NSArray *arguments = extractArguments(invocation);
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JSValue *returnValue = [function callWithArguments:arguments];
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setReturnValue(returnValue, invocation);
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}
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context[@"self"] = nil;
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}
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static NSMethodSignature *methodSignatureForSelector(id self, SEL _cmd, SEL selector)
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{
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NSMethodSignature *methodSignature = nil;
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Class cls = [self class];
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methodSignature = [cls instanceMethodSignatureForSelector:selector];
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if (methodSignature) {
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return methodSignature;
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}
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NSUInteger numberOfArguments = [[NSStringFromSelector(selector) componentsSeparatedByString:@":"] count] - 1;
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return [NSMethodSignature signatureWithObjCTypes:[[@"@@:" stringByPaddingToLength:numberOfArguments + 3 withString:@"@" startingAtIndex:0] UTF8String]];
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}
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static BOOL respondsToSelector(id self, SEL _cmd, SEL selector)
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{
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JSContext *context = [JSBScriptingSupport globalContext];
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NSString *propertyName = propertyNameFromSelector(selector);
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JSValue *value = context[mangledNameFromClass([self class])][@"instanceMembers"][propertyName];
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return !value.isUndefined;
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}

‎Classes/JSBScriptingSupport.h‎

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//
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#import <Foundation/Foundation.h>
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#import "JSContext+Helper.h"
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#import "JSContext+JavaScriptBridge.h"
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@import JavaScriptCore;
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