1 .class public LHelloWorldLambda; 2 3 #Ye olde hello world application (with lambdas!) 4 #To assemble and run this on a phone or emulator: 5 # 6 #java -jar smali.jar -o classes.dex HelloWorldLambda.smali HelloWorldFunctionalInterface.smali 7 #zip HelloWorld.zip classes.dex 8 #adb push HelloWorld.zip /data/local 9 #adb shell dalvikvm -cp /data/local/HelloWorld.zip HelloWorld 10 # 11 #if you get out of memory type errors when running smali.jar, try 12 #java -Xmx512m -jar smali.jar HelloWorldLambda.smali 13 #instead 14 15 .super Ljava/lang/Object; 16 17 .method public static main([Ljava/lang/String;)V 18 .registers 9 # 1 parameter, 8 locals 19 20 sget-object v0, Ljava/lang/System;->out:Ljava/io/PrintStream; 21 22 const-string v1, "Hello World!" 23 const-string v2, "How" # vD 24 const-string v3, "are" # vE 25 const-string v4, "you" # vF 26 const-string v5, "doing?" # vG 27 28 capture-variable v1, "helloworld" 29 30 # TODO: do I need to pass the type of the lambda's functional interface here as a type id? 31 create-lambda v1, LHelloWorldLambda;->doHelloWorld(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V 32 # Method descriptor is not required here, because only the single-abstract method is ever invoked. 33 invoke-lambda v1, {v2, v3, v4, v5} 34 35 box-lambda v6, v1 # The type of v6 is now 'LHelloWorldFunctionalInterface;' 36 invoke-virtual {v6, v2, v3, v4, v5}, LHelloWorldFunctionalInterface;->applyFourStrings(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V 37 38 # FIXME: should be \HelloWorldFunctionalInterface; instead of L...; 39 40 # TODO: do we really need the type descriptor here at all? 41 unbox-lambda v7, v6, LHelloWorldFunctionalInterface; # The type of v7 is now \HelloWorldFunctionalInterface; 42 invoke-lambda v7, {v2, v3, v4, v5} 43 44 return-void 45 .end method 46 47 .method public static doHelloWorld(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V 48 .registers 6 # 4 parameters, 2 locals 49 50 # This helloworld variable is brought to you by the variable liberation front 51 liberate-variable v0, p0, "helloworld" 52 53 sget-object v1, Ljava/lang/System;->out:Ljava/io/PrintStream; 54 invoke-virtual {v1, v0}, Ljava/io/PrintStream;->println(Ljava/lang/String;)V 55 56 return-void 57 .end method 58
