1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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22  */
23 
24 package vm.runtime.defmeth.shared.builder;
25 
26 import java.util.ArrayList;
27 import java.util.Arrays;
28 import java.util.List;
29 import vm.runtime.defmeth.shared.data.ConcreteClass;
30 import vm.runtime.defmeth.shared.data.Interface;
31 import vm.runtime.defmeth.shared.data.method.Method;
32 
33 import static jdk.internal.org.objectweb.asm.Opcodes.*;
34 import vm.runtime.defmeth.shared.data.ConcreteClassImpl;
35 
36 /**
37  * Builder of {@link Data.ConcreteClass} instances.
38  */
39 public class ConcreteClassBuilder extends ClassBuilder<ConcreteClassBuilder,ConcreteClass>{
40     // Super class
41     private ConcreteClass parent;
42 
43     // Implemented interfaces
44     private List<Interface> interfaces = new ArrayList<>();
45 
ConcreteClassBuilder(TestBuilder builder)46     /* package-private */ ConcreteClassBuilder(TestBuilder builder) {
47         super(builder);
48     }
49 
extend(ConcreteClass parent)50     public ConcreteClassBuilder extend(ConcreteClass parent) {
51         this.parent = parent;
52 
53         return this;
54     }
55 
extend(Class<?> parent)56     public ConcreteClassBuilder extend(Class<?> parent) {
57         this.parent = builder.toConcreteClass(parent);
58 
59         return this;
60     }
61 
implement(Interface... ifaces)62     public ConcreteClassBuilder implement(Interface... ifaces) {
63         interfaces.addAll(Arrays.asList(ifaces));
64 
65         return this;
66     }
67 
abstractMethod(String name, String desc)68     public ClassMethodBuilder<ConcreteClassBuilder> abstractMethod(String name, String desc) {
69         MethodBuilder mb = new MethodBuilder(builder).name(name).desc(desc).type(MethodType.ABSTRACT);
70 
71         // Ensure that the class enclosing abstract method is also abstract
72         addFlags(ACC_ABSTRACT);
73 
74         return new ClassMethodBuilder<>(this, mb);
75     }
76 
concreteMethod(String name, String desc)77     public ClassMethodBuilder<ConcreteClassBuilder> concreteMethod(String name, String desc) {
78         MethodBuilder mb = new MethodBuilder(builder).name(name).desc(desc).type(MethodType.CONCRETE);
79         return new ClassMethodBuilder<>(this, mb);
80     }
81 
82     /**
83      * Construct Data.ConcreteClass instance.
84      * @return instance of Data.Interface class
85      */
86     @Override
build()87     public ConcreteClass build() {
88         if (name == null) {
89             throw new IllegalStateException();
90         }
91 
92         if (builder.hasElement(name)) {
93             throw new IllegalStateException(name);
94         }
95 
96         ConcreteClass clz = new ConcreteClassImpl(name, flags, majorVer, sig,
97                 (parent != null) ? parent : ConcreteClass.OBJECT,
98                 interfaces.toArray(new Interface[0]),
99                 methods.toArray(new Method[0]));
100 
101         builder.register(clz);
102         builder.finishConstruction(this);
103 
104         return clz;
105     }
106 }
107