1 | |
package org.apache.commons.ognl; |
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
|
18 | |
|
19 | |
|
20 | |
|
21 | |
|
22 | |
import org.apache.commons.ognl.enhance.UnsupportedCompilationException; |
23 | |
|
24 | |
|
25 | |
|
26 | |
|
27 | |
|
28 | |
|
29 | |
class ASTTest |
30 | |
extends ExpressionNode |
31 | |
{ |
32 | |
public ASTTest( int id ) |
33 | |
{ |
34 | 60 | super( id ); |
35 | 60 | } |
36 | |
|
37 | |
public ASTTest( OgnlParser p, int id ) |
38 | |
{ |
39 | 0 | super( p, id ); |
40 | 0 | } |
41 | |
|
42 | |
protected Object getValueBody( OgnlContext context, Object source ) |
43 | |
throws OgnlException |
44 | |
{ |
45 | 114 | Object test = children[0].getValue( context, source ); |
46 | 114 | int branch = OgnlOps.booleanValue( test ) ? 1 : 2; |
47 | 114 | return children[branch].getValue( context, source ); |
48 | |
} |
49 | |
|
50 | |
protected void setValueBody( OgnlContext context, Object target, Object value ) |
51 | |
throws OgnlException |
52 | |
{ |
53 | 0 | Object test = children[0].getValue( context, target ); |
54 | 0 | int branch = OgnlOps.booleanValue( test ) ? 1 : 2; |
55 | 0 | children[branch].setValue( context, target, value ); |
56 | 0 | } |
57 | |
|
58 | |
public String getExpressionOperator( int index ) |
59 | |
{ |
60 | 0 | return ( index == 1 ) ? "?" : ":"; |
61 | |
} |
62 | |
|
63 | |
public String toGetSourceString( OgnlContext context, Object target ) |
64 | |
{ |
65 | 31 | if ( target == null ) |
66 | |
{ |
67 | 4 | throw new UnsupportedCompilationException( "evaluation resulted in null expression." ); |
68 | |
} |
69 | |
|
70 | 27 | if ( children.length != 3 ) |
71 | |
{ |
72 | 0 | throw new UnsupportedCompilationException( "Can only compile test expressions with two children." |
73 | |
+ children.length ); |
74 | |
} |
75 | |
|
76 | 27 | String result = ""; |
77 | |
|
78 | |
try |
79 | |
{ |
80 | |
|
81 | 27 | String first = OgnlRuntime.getChildSource( context, target, children[0] ); |
82 | 26 | if ( !OgnlRuntime.isBoolean( first ) && !context.getCurrentType().isPrimitive() ) |
83 | |
{ |
84 | 7 | first = OgnlRuntime.getCompiler( context ).createLocalReference( context, first, context.getCurrentType() ); |
85 | |
} |
86 | |
|
87 | 26 | if ( ExpressionNode.class.isInstance( children[0] ) ) |
88 | |
{ |
89 | 5 | first = "(" + first + ")"; |
90 | |
} |
91 | |
|
92 | 26 | String second = OgnlRuntime.getChildSource( context, target, children[1] ); |
93 | 26 | Class secondType = context.getCurrentType(); |
94 | |
|
95 | 26 | if ( !OgnlRuntime.isBoolean( second ) && !context.getCurrentType().isPrimitive() ) |
96 | |
{ |
97 | 22 | second = OgnlRuntime.getCompiler( context ).createLocalReference( context, second, context.getCurrentType() ); |
98 | |
} |
99 | |
|
100 | 25 | if ( ExpressionNode.class.isInstance( children[1] ) ) |
101 | |
{ |
102 | 1 | second = "(" + second + ")"; |
103 | |
} |
104 | |
|
105 | 25 | String third = OgnlRuntime.getChildSource( context, target, children[2] ); |
106 | 24 | Class thirdType = context.getCurrentType(); |
107 | |
|
108 | 24 | if ( !OgnlRuntime.isBoolean( third ) && !context.getCurrentType().isPrimitive() ) |
109 | |
{ |
110 | 20 | third = OgnlRuntime.getCompiler( context ).createLocalReference( context, third, context.getCurrentType() ); |
111 | |
|
112 | |
} |
113 | |
|
114 | 22 | if ( ExpressionNode.class.isInstance( children[2] ) ) |
115 | |
{ |
116 | 0 | third = "(" + third + ")"; |
117 | |
} |
118 | |
|
119 | 22 | boolean mismatched = |
120 | |
( secondType.isPrimitive( ) && !thirdType.isPrimitive( ) ) || ( !secondType.isPrimitive( ) |
121 | |
&& thirdType.isPrimitive( ) ); |
122 | |
|
123 | 22 | result += "org.apache.commons.ognl.OgnlOps.booleanValue(" + first + ")"; |
124 | |
|
125 | 22 | result += " ? "; |
126 | |
|
127 | 22 | result += ( mismatched ? " ($w) " : "" ) + second; |
128 | 22 | result += " : "; |
129 | |
|
130 | 22 | result += ( mismatched ? " ($w) " : "" ) + third; |
131 | |
|
132 | 22 | context.setCurrentObject( target ); |
133 | 22 | context.setCurrentType( mismatched ? Object.class : secondType ); |
134 | |
|
135 | 22 | return result; |
136 | |
|
137 | |
} |
138 | 3 | catch ( NullPointerException e ) |
139 | |
{ |
140 | |
|
141 | |
|
142 | 3 | throw new UnsupportedCompilationException( "evaluation resulted in null expression." ); |
143 | |
} |
144 | 2 | catch ( Throwable t ) |
145 | |
{ |
146 | 2 | throw OgnlOps.castToRuntime( t ); |
147 | |
} |
148 | |
} |
149 | |
|
150 | |
public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data ) |
151 | |
throws OgnlException |
152 | |
{ |
153 | 0 | return visitor.visit( this, data ); |
154 | |
} |
155 | |
} |