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package org.apache.commons.ognl; |
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import java.math.BigDecimal; |
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import java.math.BigInteger; |
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33 | 16 | public class ToStringVisitor |
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implements NodeVisitor<StringBuilder, StringBuilder> |
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{ |
36 | 1 | static final ToStringVisitor INSTANCE = new ToStringVisitor(); |
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|
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public StringBuilder visit( ASTSequence node, StringBuilder data ) |
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{ |
40 | 0 | return commaSeparatedChildren( node, data ); |
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} |
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|
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private StringBuilder commaSeparatedChildren( SimpleNode node, StringBuilder data ) |
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{ |
45 | 2 | if ( ( node.children != null ) ) |
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{ |
47 | 8 | for ( int i = 0; i < node.children.length; ++i ) |
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{ |
49 | 6 | if ( i > 0 ) |
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{ |
51 | 4 | data.append( ", " ); |
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} |
53 | 6 | recurse( node.children[i], data ); |
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} |
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} |
56 | 2 | return data; |
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} |
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|
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public StringBuilder visit( ASTAssign node, StringBuilder data ) |
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{ |
61 | 0 | return concatInfix( node, " = ", data ); |
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} |
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public StringBuilder visit( ASTTest node, StringBuilder data ) |
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{ |
66 | 0 | return visitExpressionNode( node, data ); |
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} |
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private StringBuilder visitExpressionNode( ExpressionNode node, StringBuilder data ) |
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{ |
71 | 0 | if ( node.parent != null ) |
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{ |
73 | 0 | data.append( "(" ); |
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} |
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|
76 | 0 | if ( ( node.children != null ) && ( node.children.length > 0 ) ) |
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{ |
78 | 0 | for ( int i = 0; i < node.children.length; ++i ) |
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{ |
80 | 0 | if ( i > 0 ) |
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{ |
82 | 0 | data.append( " " ).append( node.getExpressionOperator( i ) ).append( " " ); |
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} |
84 | 0 | recurse( node.children[i], data ); |
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} |
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} |
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|
88 | 0 | if ( node.parent != null ) |
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{ |
90 | 0 | data.append( ')' ); |
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} |
92 | 0 | return data; |
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} |
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|
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public StringBuilder visit( ASTOr node, StringBuilder data ) |
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{ |
97 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTAnd node, StringBuilder data ) |
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{ |
102 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTBitOr node, StringBuilder data ) |
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{ |
107 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTXor node, StringBuilder data ) |
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{ |
112 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTBitAnd node, StringBuilder data ) |
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{ |
117 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTEq node, StringBuilder data ) |
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{ |
122 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTNotEq node, StringBuilder data ) |
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{ |
127 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTLess node, StringBuilder data ) |
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{ |
132 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTGreater node, StringBuilder data ) |
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{ |
137 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTLessEq node, StringBuilder data ) |
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{ |
142 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTGreaterEq node, StringBuilder data ) |
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{ |
147 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTIn node, StringBuilder data ) |
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{ |
152 | 0 | final String infix = " in "; |
153 | 0 | return concatInfix( node, infix, data ); |
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} |
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private StringBuilder concatInfix( SimpleNode node, String infix, StringBuilder data ) |
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{ |
158 | 2 | return concatInfix( node.children[0], infix, node.children[1], data ); |
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} |
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private StringBuilder concatInfix( Node left, String infix, Node right, StringBuilder data ) |
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{ |
163 | 2 | recurse( left, data ).append( infix ); |
164 | 2 | return recurse( right, data ); |
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} |
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public StringBuilder visit( ASTNotIn node, StringBuilder data ) |
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{ |
169 | 2 | return concatInfix( node, " not in ", data ); |
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} |
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public StringBuilder visit( ASTShiftLeft node, StringBuilder data ) |
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{ |
174 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTShiftRight node, StringBuilder data ) |
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{ |
179 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTUnsignedShiftRight node, StringBuilder data ) |
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{ |
184 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTAdd node, StringBuilder data ) |
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{ |
189 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTSubtract node, StringBuilder data ) |
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{ |
194 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTMultiply node, StringBuilder data ) |
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{ |
199 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTDivide node, StringBuilder data ) |
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{ |
204 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTRemainder node, StringBuilder data ) |
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{ |
209 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTNegate node, StringBuilder data ) |
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{ |
214 | 0 | return appendPrefixed( "-", node, data ); |
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} |
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public StringBuilder visit( ASTBitNegate node, StringBuilder data ) |
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{ |
219 | 0 | return appendPrefixed( "~", node, data ); |
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} |
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private StringBuilder appendPrefixed( String prefix, SimpleNode node, StringBuilder data ) |
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{ |
224 | 0 | data.append( prefix ); |
225 | 0 | return recurse( node.children[0], data ); |
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} |
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|
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public StringBuilder visit( ASTNot node, StringBuilder data ) |
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{ |
230 | 0 | return visitExpressionNode( node, data ); |
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} |
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public StringBuilder visit( ASTInstanceof node, StringBuilder data ) |
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{ |
235 | 0 | return recurse( node.children[0], data ).append( " instanceof " ).append( node.getTargetType() ); |
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} |
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public StringBuilder visit( ASTChain node, StringBuilder data ) |
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{ |
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|
241 | 0 | if ( ( node.children != null ) && ( node.children.length > 0 ) ) |
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{ |
243 | 0 | for ( int i = 0; i < node.children.length; i++ ) |
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{ |
245 | 0 | if ( i > 0 ) |
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{ |
247 | 0 | if ( !( node.children[i] instanceof ASTProperty ) |
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|| !( (ASTProperty) node.children[i] ).isIndexedAccess() ) |
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{ |
250 | 0 | data.append( "." ); |
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} |
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} |
253 | 0 | recurse( node.children[i], data ); |
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} |
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} |
256 | 0 | return data; |
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} |
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|
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public StringBuilder visit( ASTEval node, StringBuilder data ) |
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{ |
261 | 0 | data.append( "(" ); |
262 | 0 | concatInfix( node, ")(", data ); |
263 | 0 | return data.append( ")" ); |
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} |
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|
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public StringBuilder visit( ASTConst node, StringBuilder data ) |
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{ |
268 | 9 | final Object value = node.getValue(); |
269 | 9 | if ( value == null ) |
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{ |
271 | 3 | data.append( "null" ); |
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} |
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else |
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{ |
275 | 6 | if ( value instanceof String ) |
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{ |
277 | 0 | data.append( '\"' ).append( OgnlOps.getEscapeString( value.toString() ) ).append( '\"' ); |
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} |
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else |
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{ |
281 | 6 | if ( value instanceof Character ) |
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{ |
283 | 0 | data.append( '\'' ).append( OgnlOps.getEscapedChar( (Character) value ) ).append( '\'' ); |
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} |
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else |
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{ |
287 | 6 | if ( value instanceof Node ) |
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{ |
289 | 0 | data.append( ":[ " ); |
290 | 0 | recurse( (Node) value, data ); |
291 | 0 | data.append( " ]" ); |
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} |
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else |
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{ |
295 | 6 | data.append( value ); |
296 | 6 | if ( value instanceof Long ) |
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{ |
298 | 0 | data.append( 'L' ); |
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} |
300 | 6 | else if ( value instanceof BigDecimal ) |
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{ |
302 | 0 | data.append( 'B' ); |
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} |
304 | 6 | else if ( value instanceof BigInteger ) |
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{ |
306 | 0 | data.append( 'H' ); |
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} |
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} |
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} |
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} |
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} |
312 | 9 | return data; |
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} |
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|
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public StringBuilder visit( ASTThisVarRef node, StringBuilder data ) |
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{ |
317 | 0 | return data.append( "#this" ); |
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} |
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public StringBuilder visit( ASTRootVarRef node, StringBuilder data ) |
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{ |
322 | 0 | return data.append( "#root" ); |
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} |
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public StringBuilder visit( ASTVarRef node, StringBuilder data ) |
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{ |
327 | 0 | return data.append( "#" ).append( node.getName() ); |
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} |
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public StringBuilder visit( ASTList node, StringBuilder data ) |
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{ |
332 | 2 | return wrappedCommaSeparatedChildren( "{ ", node, " }", data ); |
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} |
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|
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public StringBuilder visit( ASTMap node, StringBuilder data ) |
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{ |
337 | 0 | data.append( "#" ); |
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|
339 | 0 | if ( node.getClassName() != null ) |
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{ |
341 | 0 | data.append( "@" ).append( node.getClassName() ).append( "@" ); |
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} |
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|
344 | 0 | data.append( "{ " ); |
345 | 0 | for ( int i = 0; i < node.jjtGetNumChildren(); ++i ) |
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{ |
347 | 0 | ASTKeyValue kv = (ASTKeyValue) node.children[i]; |
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|
349 | 0 | if ( i > 0 ) |
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{ |
351 | 0 | data.append( ", " ); |
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} |
353 | 0 | concatInfix( kv.getKey(), " : ", kv.getValue(), data ); |
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} |
355 | 0 | return data.append( " }" ); |
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} |
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|
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public StringBuilder visit( ASTKeyValue node, StringBuilder data ) |
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{ |
360 | 0 | return concatInfix( node.getKey(), " -> ", node.getValue(), data ); |
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} |
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|
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public StringBuilder visit( ASTStaticField node, StringBuilder data ) |
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{ |
365 | 0 | return data.append( "@" ).append( node.getClassName() ).append( "@" ).append( node.getFieldName() ); |
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} |
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|
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public StringBuilder visit( ASTCtor node, StringBuilder data ) |
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{ |
370 | 0 | data.append( "new " ).append( node.getClassName() ); |
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|
372 | 0 | if ( node.isArray() ) |
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{ |
374 | 0 | if ( node.children[0] instanceof ASTConst ) |
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{ |
376 | 0 | indexedChild( node, data ); |
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} |
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else |
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{ |
380 | 0 | appendPrefixed( "[] ", node, data ); |
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} |
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} |
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else |
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{ |
385 | 0 | wrappedCommaSeparatedChildren( "(", node, ")", data ); |
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} |
387 | 0 | return data; |
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} |
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|
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private StringBuilder wrappedCommaSeparatedChildren( String prefix, SimpleNode node, String suffix, |
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StringBuilder data ) |
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{ |
393 | 2 | data.append( prefix ); |
394 | 2 | return commaSeparatedChildren( node, data ).append( suffix ); |
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} |
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|
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public StringBuilder visit( ASTProperty node, StringBuilder data ) |
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{ |
399 | 2 | if ( node.isIndexedAccess() ) |
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{ |
401 | 1 | indexedChild( node, data ); |
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} |
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else |
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{ |
405 | 1 | data.append( ( (ASTConst) node.children[0] ).getValue() ); |
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} |
407 | 2 | return data; |
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} |
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|
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private StringBuilder indexedChild( SimpleNode node, StringBuilder data ) |
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{ |
412 | 1 | return surroundedNode( "[", node.children[0], "]", data ); |
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} |
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|
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public StringBuilder visit( ASTStaticMethod node, StringBuilder data ) |
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{ |
417 | 0 | data.append( "@" ).append( node.getClassName() ).append( "@" ).append( node.getMethodName() ); |
418 | 0 | return wrappedCommaSeparatedChildren( "(", node, ")", data ); |
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} |
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|
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public StringBuilder visit( ASTMethod node, StringBuilder data ) |
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{ |
423 | 0 | data.append( node.getMethodName() ); |
424 | 0 | return wrappedCommaSeparatedChildren( "(", node, ")", data ); |
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} |
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|
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public StringBuilder visit( ASTProject node, StringBuilder data ) |
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{ |
429 | 0 | return surroundedNode( "{ ", node.children[0], " }", data ); |
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} |
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|
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private StringBuilder surroundedNode( String open, Node inner, String close, StringBuilder data ) |
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{ |
434 | 1 | data.append( open ); |
435 | 1 | return recurse( inner, data ).append( close ); |
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} |
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|
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public StringBuilder visit( ASTSelect node, StringBuilder data ) |
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{ |
440 | 0 | return surroundedNode( "{? ", node.children[0], " }", data ); |
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} |
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|
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public StringBuilder visit( ASTSelectFirst node, StringBuilder data ) |
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{ |
445 | 0 | return surroundedNode( "{^ ", node.children[0], " }", data ); |
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} |
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|
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public StringBuilder visit( ASTSelectLast node, StringBuilder data ) |
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{ |
450 | 0 | return surroundedNode( "{$ ", node.children[0], " }", data ); |
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} |
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|
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private StringBuilder recurse( Node child, StringBuilder data ) |
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{ |
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try |
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{ |
457 | 11 | return child == null ? data.append( "null" ) : child.accept( this, data ); |
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} |
459 | 0 | catch ( OgnlException e ) |
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{ |
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|
462 | 0 | throw new RuntimeException( e ); |
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} |
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} |
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|
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} |