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package org.apache.commons.el; |
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import java.util.List; |
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import javax.servlet.jsp.el.ELException; |
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import javax.servlet.jsp.el.FunctionMapper; |
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import javax.servlet.jsp.el.VariableResolver; |
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public class UnaryOperatorExpression |
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extends Expression |
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{ |
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UnaryOperator mOperator; |
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public UnaryOperator getOperator () |
45 | 0 | { return mOperator; } |
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public void setOperator (UnaryOperator pOperator) |
47 | 0 | { mOperator = pOperator; } |
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List mOperators; |
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public List getOperators () |
54 | 0 | { return mOperators; } |
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public void setOperators (List pOperators) |
56 | 0 | { mOperators = pOperators; } |
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Expression mExpression; |
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public Expression getExpression () |
63 | 0 | { return mExpression; } |
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public void setExpression (Expression pExpression) |
65 | 0 | { mExpression = pExpression; } |
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public UnaryOperatorExpression (UnaryOperator pOperator, |
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List pOperators, |
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Expression pExpression) |
75 | 0 | { |
76 | 0 | mOperator = pOperator; |
77 | 0 | mOperators = pOperators; |
78 | 0 | mExpression = pExpression; |
79 | 0 | } |
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public String getExpressionString () |
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{ |
90 | 0 | StringBuffer buf = new StringBuffer (); |
91 | 0 | buf.append ("("); |
92 | 0 | if (mOperator != null) { |
93 | 0 | buf.append (mOperator.getOperatorSymbol ()); |
94 | 0 | buf.append (" "); |
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} |
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else { |
97 | 0 | for (int i = 0, size = mOperators.size(); i < size; i++) { |
98 | 0 | UnaryOperator operator = (UnaryOperator) mOperators.get (i); |
99 | 0 | buf.append (operator.getOperatorSymbol ()); |
100 | 0 | buf.append (" "); |
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} |
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} |
103 | 0 | buf.append (mExpression.getExpressionString ()); |
104 | 0 | buf.append (")"); |
105 | 0 | return buf.toString (); |
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} |
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public Object evaluate (VariableResolver pResolver, FunctionMapper functions) |
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throws ELException |
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{ |
116 | 0 | Object value = mExpression.evaluate (pResolver, functions); |
117 | 0 | if (mOperator != null) { |
118 | 0 | value = mOperator.apply (value); |
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} |
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else { |
121 | 0 | for (int i = mOperators.size () - 1; i >= 0; i--) { |
122 | 0 | UnaryOperator operator = (UnaryOperator) mOperators.get (i); |
123 | 0 | value = operator.apply (value); |
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} |
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} |
126 | 0 | return value; |
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} |
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public Expression bindFunctions(final FunctionMapper functions) throws ELException { |
130 | 0 | return new UnaryOperatorExpression( |
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mOperator, |
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mOperators, |
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mExpression.bindFunctions(functions)); |
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} |
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} |