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1 package org.jicengine.element.impl;
2
3 import org.jicengine.operation.OperationException;
4 import org.jicengine.operation.Context;
5 import org.jicengine.operation.Operation;
6 import org.jicengine.element.*;
7 import java.util.*;
8
9
18
19 public class ArrayElementCompiler extends ElementCompiler {
20
21
26 public class ArrayConstructor implements Operation {
27 private int size = 0;
28
29 public void increaseSize()
30 {
31 this.size++;
32 }
33
34 public int getSize()
35 {
36 return this.size;
37 }
38
39 public boolean needsParameters()
40 {
41 return false;
42 }
43
44 public boolean needsParameter(String  name)
45 {
46 return false;
47 }
48
49 public Object execute(Context context) throws OperationException
50 {
51 Class componentType = getElement().getInstanceClass().getComponentType();
52 Object arrayObject = java.lang.reflect.Array.newInstance(componentType, this.size);
53 return arrayObject;
54 }
55
56 public String toString()
57 {
58 return "{array creator}";
59 }
60 }
61
62
63
64 private int index = 0;
65
66 public ArrayElementCompiler(String name, Location location) throws ElementException
67 {
68 super(name, location);
69
70 getElement().setConstructor(new ArrayConstructor());
71
72 }
73
74 public void elementInitialized() throws ElementException
75 {
76 super.elementInitialized();
77 if( !getElement().getInstanceClass().isArray() ){
78 throw new ElementException("Class '" + getElement().getInstanceClass().getName() + "' is not an array.", getName(), getLocation());
79 }
80 }
81
82 protected ActionElement handleLooseVariableElement(VariableElement child) throws ElementException
83 {
84 ArrayConstructor constructor = (ArrayConstructor) getElement().getConstructor();
86
87 constructor.increaseSize();
88 int size = constructor.getSize();
89 int index = size-1;
90 Operation action = new StoreToArrayOperation(index);
91 return new WrapperActionElement(child, child.getLocation(), action);
92 }
93
94 public class StoreToArrayOperation implements Operation {
95 private int index;
96 public StoreToArrayOperation(int index)
97 {
98 this.index = index;
99 }
100 public boolean needsParameter(String name)
101 {
102 return name.equals(Element.VARIABLE_NAME_PARENT_INSTANCE) || name.equals(Element.VARIABLE_NAME_ELEMENT_INSTANCE);
103 }
104 public boolean needsParameters()
105 {
106 return true;
107 }
108
109 public Object execute(Context context) throws OperationException
110 {
111 Object array = context.getObject(Element.VARIABLE_NAME_PARENT_INSTANCE);
112 Object element = context.getObject(Element.VARIABLE_NAME_ELEMENT_INSTANCE);
113
114 try {
115 java.lang.reflect.Array.set(array, this.index, element);
116 } catch (IllegalArgumentException e){
117 throw new OperationException("[array-position " + this.index + "]: failed to store value '" + element + " (class '" + element.getClass().getName() + "')", e);
118 }
119 return null;
120 }
121
122 public String toString()
123 {
124 return "java.lang.reflect.Array.set(" + Element.VARIABLE_NAME_PARENT_INSTANCE + ", " + this.index + ", " + Element.VARIABLE_NAME_ELEMENT_INSTANCE + ")";
125 }
126 }
127 }
128 |
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