svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultCodeBuilder.java @ 44211
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package org.gvsig.expressionevaluator.impl; |
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|
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.List; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.expressionevaluator.Code; |
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import static org.gvsig.expressionevaluator.Code.CALLER; |
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import static org.gvsig.expressionevaluator.Code.CONSTANT; |
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import static org.gvsig.expressionevaluator.Code.IDENTIFIER; |
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import static org.gvsig.expressionevaluator.Code.UNDEFINED; |
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import static org.gvsig.expressionevaluator.Code.CODES; |
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import org.gvsig.expressionevaluator.Code.Caller; |
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import org.gvsig.expressionevaluator.Code.Constant; |
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import static org.gvsig.expressionevaluator.Code.EMPTY_FORMATTER; |
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import org.gvsig.expressionevaluator.Code.Identifier; |
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import org.gvsig.expressionevaluator.Code.Method; |
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import org.gvsig.expressionevaluator.CodeBuilder; |
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import org.gvsig.expressionevaluator.Codes; |
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import org.gvsig.expressionevaluator.ExpressionBuilder; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_ADD; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_AND; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_CONCAT; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_DIV; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_EQ; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_GE; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_GT; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_ILIKE; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_IS; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_LE; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_LIKE; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_LT; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_MOD; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_MULT; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_NE; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_NEGATE; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_NOT; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_OR; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_REGEXP; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_SUBST; |
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import org.gvsig.expressionevaluator.ExpressionBuilder.Value; |
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import org.gvsig.expressionevaluator.ExpressionUtils; |
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import org.gvsig.expressionevaluator.Formatter; |
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import org.gvsig.expressionevaluator.Function; |
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import org.gvsig.expressionevaluator.Interpreter; |
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import org.gvsig.expressionevaluator.SymbolTable; |
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import org.gvsig.expressionevaluator.impl.function.programming.GetattrFunction; |
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import org.gvsig.expressionevaluator.impl.function.programming.GetitemFunction; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.tools.visitor.Visitor; |
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|
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@SuppressWarnings("UseSpecificCatch") |
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public class DefaultCodeBuilder implements CodeBuilder { |
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|
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public abstract class BaseCode implements Code { |
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|
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@Override
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public int code() { |
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return UNDEFINED;
|
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} |
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|
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@Override
|
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public void accept(Visitor visitor) throws BaseException { |
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visitor.visit(this);
|
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} |
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|
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@Override
|
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public Value toValue(ExpressionBuilder builder) {
|
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return null; |
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} |
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|
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@Override
|
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public Value toValue() {
|
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ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
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return this.toValue(builder); |
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} |
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|
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@Override
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public void link(SymbolTable symbolTable) { |
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if( this.code() == Code.CALLER ) { |
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Caller caller = (Caller) this;
|
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if( caller.function() == null ) { |
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caller.function(symbolTable.function(caller.name())); |
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} |
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if( caller.parameters() != null ) { |
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for( Code arg : caller.parameters() ) {
|
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arg.link(symbolTable); |
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} |
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} |
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} |
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} |
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} |
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|
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class BaseConstant extends BaseCode implements Constant { |
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|
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private Object value; |
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|
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public BaseConstant(Object value) { |
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this.value = value;
|
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} |
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|
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@Override
|
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public int code() { |
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return CONSTANT;
|
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} |
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|
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@Override
|
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public Object value() { |
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return this.value; |
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} |
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|
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public void value(Object v) { |
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this.value = v;
|
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} |
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|
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@Override
|
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public Value toValue(ExpressionBuilder builder) {
|
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return builder.constant(this.value); |
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} |
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|
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@Override
|
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public String toString() { |
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return this.toString(EMPTY_FORMATTER); |
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} |
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|
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@Override
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public String toString(Formatter<Code> formatter) { |
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if( formatter.canApply(this) ) { |
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return formatter.format(this); |
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} |
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StringBuilder builder = new StringBuilder(); |
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Object v = this.value(); |
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if( v == null ) { |
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builder.append("NULL");
|
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} else if( v instanceof CharSequence ) { |
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if( StringUtils.isEmpty((CharSequence)v) ) { |
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builder.append("''");
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} else {
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v = "'" + StringUtils.replace(v.toString(), "'", "''") + "'"; |
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builder.append(v); |
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} |
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|
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} else if( v instanceof Boolean ) { |
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builder.append(((Boolean)v).toString().toUpperCase());
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|
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} else if( v instanceof Geometry ) { |
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try {
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builder.append("'");
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builder.append(((Geometry) v).convertToWKT()); |
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builder.append("'::geometry");
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} catch (Exception ex) { |
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builder.append("'UNKNOW'::geometry");
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} |
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|
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} else {
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builder.append(v); |
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} |
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return builder.toString();
|
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} |
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|
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} |
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|
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public interface RecursionControlSupport { |
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|
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public boolean enterCode(int max); |
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|
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public void exitCode(); |
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|
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public void resetRecursionState(); |
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} |
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|
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private class RecursionSupport implements RecursionControlSupport { |
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|
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private int counter; |
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|
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public RecursionSupport() {
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this.counter = 0; |
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} |
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|
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@Override
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public boolean enterCode(int max) { |
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this.counter += 1; |
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return this.counter < max; |
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} |
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|
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@Override
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public void exitCode() { |
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this.counter -= 1; |
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} |
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|
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@Override
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public void resetRecursionState() { |
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this.counter = 0; |
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} |
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|
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} |
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|
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public class BaseIdentifier extends BaseCode implements Identifier, RecursionControlSupport { |
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|
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private final String name; |
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private final RecursionSupport recursionSupport; |
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|
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public BaseIdentifier(String name) { |
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this.name = name;
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this.recursionSupport = new RecursionSupport(); |
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} |
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|
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@Override
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public int code() { |
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return IDENTIFIER;
|
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} |
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|
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@Override
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public String name() { |
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return this.name; |
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} |
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|
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@Override
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public Value toValue(ExpressionBuilder builder) {
|
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return builder.variable(this.name); |
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} |
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|
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@Override
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public String toString() { |
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return this.toString(EMPTY_FORMATTER); |
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} |
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|
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@Override
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public String toString(Formatter<Code> formatter) { |
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if( formatter.canApply(this) ) { |
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return formatter.format(this); |
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} |
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StringBuilder builder = new StringBuilder(); |
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builder.append("\"");
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builder.append(this.name());
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builder.append("\"");
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return builder.toString();
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} |
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|
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@Override
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public boolean enterCode(int max) { |
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return this.recursionSupport.enterCode(max); |
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} |
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|
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@Override
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public void exitCode() { |
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this.recursionSupport.exitCode();
|
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} |
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|
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@Override
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public void resetRecursionState() { |
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this.recursionSupport.resetRecursionState();
|
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} |
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|
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} |
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|
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public class BaseCodes implements Codes { |
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|
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private final List<Code> codes; |
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|
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public BaseCodes() {
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this.codes = new ArrayList<>(); |
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} |
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|
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@Override
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public int code() { |
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return CODES;
|
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} |
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|
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@Override
|
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public int size() { |
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if( codes == null ) { |
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return 0; |
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} |
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return this.codes.size(); |
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} |
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|
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public void add(Code arg) { |
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this.codes.add(arg);
|
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} |
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|
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@Override
|
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public Iterator<Code> iterator() { |
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return this.codes.iterator(); |
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} |
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|
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@Override
|
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public Code get(int n) { |
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return this.codes.get(n); |
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} |
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|
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@Override
|
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public boolean isEmpty() { |
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return this.codes.isEmpty(); |
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} |
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|
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@Override
|
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public List<Code> toList() { |
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return Collections.unmodifiableList(this.codes); |
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} |
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|
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@Override
|
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public void accept(Visitor visitor) throws BaseException { |
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for( Code arg : this.codes ) { |
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arg.accept(visitor); |
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} |
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} |
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|
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@Override
|
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public String toString() { |
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return this.toString(EMPTY_FORMATTER); |
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} |
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|
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@Override
|
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public Value toValue(ExpressionBuilder builder) {
|
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throw new UnsupportedOperationException(); |
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} |
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|
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@Override
|
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public Value toValue() {
|
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throw new UnsupportedOperationException(); |
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} |
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|
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@Override
|
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public String toString(Formatter<Code> formatter) { |
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if( formatter.canApply(this) ) { |
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return formatter.format(this); |
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} |
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if( codes != null ) { |
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StringBuilder builder = new StringBuilder(); |
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boolean skipcoma = true; |
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for( Code code : codes ) {
|
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if( code == null ) { |
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continue;
|
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} |
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if( skipcoma ) {
|
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skipcoma = false;
|
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} else {
|
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builder.append(", ");
|
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} |
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builder.append(code.toString(formatter)); |
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} |
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return builder.toString();
|
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} |
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return ""; |
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} |
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|
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@Override
|
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public void link(SymbolTable symbolTable) { |
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for (Code code : this.codes) { |
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code.link(symbolTable); |
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} |
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} |
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|
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} |
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|
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public class BaseCaller extends BaseCode implements Caller, RecursionControlSupport { |
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|
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private final String name; |
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private final Codes args; |
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private Function function;
|
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private final int type; |
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private final RecursionSupport recursionSupport; |
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|
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public BaseCaller(String name, int type, Codes args) { |
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this.name = name;
|
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this.args = args;
|
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this.type = type;
|
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this.function = null; |
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this.recursionSupport = new RecursionSupport(); |
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} |
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|
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@Override
|
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public int code() { |
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return CALLER;
|
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} |
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|
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@Override
|
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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return this.function.call(interpreter, args); |
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} |
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|
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@Override
|
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public String name() { |
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return this.name; |
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} |
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|
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@Override
|
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public Function function() {
|
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return this.function; |
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} |
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|
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@Override
|
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public Function function(Function function) {
|
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this.function = function;
|
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return this.function; |
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} |
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|
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@Override
|
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public Codes parameters() {
|
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return this.args; |
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} |
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|
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@Override
|
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public int type() { |
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return this.type; |
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} |
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|
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@Override
|
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public void accept(Visitor visitor) throws BaseException { |
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visitor.visit(this);
|
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if(this.args!=null) { |
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this.args.accept(visitor);
|
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} |
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} |
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|
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@Override
|
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public Value toValue(ExpressionBuilder builder) {
|
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switch(this.type) { |
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case UNARY_OPERATOR:
|
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return builder.function(
|
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OPERATOR_NEGATE.equalsIgnoreCase(this.name())?
|
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"-" :
|
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this.name(),
|
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this.parameters().get(0).toValue(builder) |
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); |
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case BINARY_OPERATOR:
|
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return builder.binaryOperator(
|
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this.name(),
|
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this.parameters().get(0).toValue(builder), |
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this.parameters().get(1).toValue(builder) |
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); |
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case FUNCTION:
|
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default:
|
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ExpressionBuilder.Function f = builder.function(this.name());
|
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if( this.parameters()!=null ) { |
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for (Code parameter : this.parameters()) { |
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f.parameter(parameter.toValue(builder)); |
441 |
} |
442 |
|
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} |
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return f;
|
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|
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} |
447 |
} |
448 |
|
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@Override
|
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public String toString() { |
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return this.toString(EMPTY_FORMATTER); |
452 |
} |
453 |
|
454 |
@Override
|
455 |
public String toString(Formatter<Code> formatter) { |
456 |
if( formatter.canApply(this) ) { |
457 |
return formatter.format(this); |
458 |
} |
459 |
StringBuilder builder = new StringBuilder(); |
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switch(this.type) { |
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case UNARY_OPERATOR:
|
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if( OPERATOR_NEGATE.equalsIgnoreCase(this.name()) ) { |
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builder.append("-");
|
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} else {
|
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builder.append(this.name());
|
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} |
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builder.append("(");
|
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builder.append(this.parameters().get(0).toString(formatter)); |
469 |
builder.append(")");
|
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break;
|
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case BINARY_OPERATOR:
|
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builder.append("(");
|
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builder.append(this.parameters().get(0).toString(formatter)); |
474 |
builder.append(" ");
|
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builder.append(this.name());
|
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builder.append(" ");
|
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builder.append(this.parameters().get(1).toString(formatter)); |
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builder.append(")");
|
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break;
|
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case FUNCTION:
|
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default:
|
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builder.append(this.name());
|
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builder.append("(");
|
484 |
if( this.parameters()!=null ) { |
485 |
builder.append(this.parameters().toString(formatter));
|
486 |
} |
487 |
builder.append(")");
|
488 |
} |
489 |
return builder.toString();
|
490 |
} |
491 |
|
492 |
@Override
|
493 |
public boolean enterCode(int max) { |
494 |
return this.recursionSupport.enterCode(max); |
495 |
} |
496 |
|
497 |
@Override
|
498 |
public void exitCode() { |
499 |
this.recursionSupport.exitCode();
|
500 |
} |
501 |
|
502 |
@Override
|
503 |
public void resetRecursionState() { |
504 |
this.recursionSupport.resetRecursionState();
|
505 |
} |
506 |
} |
507 |
|
508 |
public class BaseMethod extends BaseCaller implements Method { |
509 |
|
510 |
private final Code obj; |
511 |
private final String methodname; |
512 |
|
513 |
public BaseMethod(Code obj, String methodname, Codes args) { |
514 |
super(methodname, FUNCTION, args);
|
515 |
this.obj = obj;
|
516 |
this.methodname = methodname;
|
517 |
} |
518 |
|
519 |
@Override
|
520 |
public int code() { |
521 |
return METHOD;
|
522 |
} |
523 |
|
524 |
@Override
|
525 |
public String methodname() { |
526 |
return this.methodname; |
527 |
} |
528 |
|
529 |
@Override
|
530 |
public Code obj() {
|
531 |
return this.obj; |
532 |
} |
533 |
|
534 |
@Override
|
535 |
public String toString() { |
536 |
return this.toString(EMPTY_FORMATTER); |
537 |
} |
538 |
|
539 |
@Override
|
540 |
public Value toValue(ExpressionBuilder builder) {
|
541 |
ExpressionBuilder.Method m = builder.method(this.obj.toValue(builder), this.methodname); |
542 |
if( this.parameters()!=null ) { |
543 |
for (Code parameter : this.parameters()) { |
544 |
m.parameter(parameter.toValue(builder)); |
545 |
} |
546 |
} |
547 |
return m;
|
548 |
} |
549 |
|
550 |
@Override
|
551 |
public String toString(Formatter<Code> formatter) { |
552 |
if( formatter.canApply(this) ) { |
553 |
return formatter.format(this); |
554 |
} |
555 |
StringBuilder builder = new StringBuilder(); |
556 |
builder.append(this.obj.toString(formatter));
|
557 |
builder.append("->");
|
558 |
builder.append(this.methodname());
|
559 |
builder.append("(");
|
560 |
if( this.parameters()!=null ) { |
561 |
builder.append(this.parameters().toString(formatter));
|
562 |
} |
563 |
builder.append(")");
|
564 |
return builder.toString();
|
565 |
} |
566 |
} |
567 |
|
568 |
@Override
|
569 |
public CodeBuilder clone() throws CloneNotSupportedException { |
570 |
// This implementation of CodeBuilder does not maintain state, so
|
571 |
// we only call the super class.
|
572 |
DefaultCodeBuilder other = (DefaultCodeBuilder) super.clone();
|
573 |
return other;
|
574 |
} |
575 |
|
576 |
@Override
|
577 |
public Constant constant(Object value) { |
578 |
return new BaseConstant(value); |
579 |
} |
580 |
|
581 |
@Override
|
582 |
public Identifier identifier(String name) { |
583 |
return new BaseIdentifier(name); |
584 |
} |
585 |
|
586 |
@Override
|
587 |
public BaseCodes args() {
|
588 |
return new BaseCodes(); |
589 |
} |
590 |
|
591 |
@Override
|
592 |
public Caller function(String name, int type, Codes args) { |
593 |
return new BaseCaller(name, type, args); |
594 |
} |
595 |
|
596 |
@Override
|
597 |
public Caller function(String name, Codes args) { |
598 |
return function(name, Caller.FUNCTION, args);
|
599 |
} |
600 |
|
601 |
@Override
|
602 |
public Code method(Code obj, String methodname, Codes methodargs) { |
603 |
Method m = new BaseMethod(obj, methodname, methodargs); |
604 |
return m;
|
605 |
} |
606 |
|
607 |
@Override
|
608 |
public Caller operator(String name, Code arg1) { |
609 |
BaseCodes args = args(); |
610 |
args.add(arg1); |
611 |
return function(name, Caller.UNARY_OPERATOR, args);
|
612 |
} |
613 |
|
614 |
@Override
|
615 |
public Caller operator(String name, Code arg1, Code arg2) { |
616 |
BaseCodes args = args(); |
617 |
args.add(arg1); |
618 |
args.add(arg2); |
619 |
return function(name, Caller.BINARY_OPERATOR, args);
|
620 |
} |
621 |
|
622 |
@Override
|
623 |
public Code not(Code op1) {
|
624 |
return operator(OPERATOR_NOT, op1);
|
625 |
} |
626 |
|
627 |
@Override
|
628 |
public Code negate(Code op1) {
|
629 |
return operator(OPERATOR_NEGATE, op1);
|
630 |
} |
631 |
|
632 |
@Override
|
633 |
public Code concat(Code op1, Code op2) {
|
634 |
return operator(OPERATOR_CONCAT, op1, op2);
|
635 |
} |
636 |
|
637 |
@Override
|
638 |
public Code add(Code op1, Code op2) {
|
639 |
return operator(OPERATOR_ADD, op1, op2);
|
640 |
} |
641 |
|
642 |
@Override
|
643 |
public Code subst(Code op1, Code op2) {
|
644 |
return operator(OPERATOR_SUBST, op1, op2);
|
645 |
} |
646 |
|
647 |
@Override
|
648 |
public Code mult(Code op1, Code op2) {
|
649 |
return operator(OPERATOR_MULT, op1, op2);
|
650 |
} |
651 |
|
652 |
@Override
|
653 |
public Code div(Code op1, Code op2) {
|
654 |
return operator(OPERATOR_DIV, op1, op2);
|
655 |
} |
656 |
|
657 |
@Override
|
658 |
public Code mod(Code op1, Code op2) {
|
659 |
return operator(OPERATOR_MOD, op1, op2);
|
660 |
} |
661 |
|
662 |
@Override
|
663 |
public Code or(Code op1, Code op2) {
|
664 |
return operator(OPERATOR_OR, op1, op2);
|
665 |
} |
666 |
|
667 |
@Override
|
668 |
public Code and(Code op1, Code op2) {
|
669 |
return operator(OPERATOR_AND, op1, op2);
|
670 |
} |
671 |
|
672 |
@Override
|
673 |
public Code like(Code op1, Code op2) {
|
674 |
return operator(OPERATOR_LIKE, op1, op2);
|
675 |
} |
676 |
|
677 |
@Override
|
678 |
public Code ilike(Code op1, Code op2) {
|
679 |
return operator(OPERATOR_ILIKE, op1, op2);
|
680 |
} |
681 |
|
682 |
@Override
|
683 |
public Code regexp(Code op1, Code op2) {
|
684 |
return operator(OPERATOR_REGEXP, op1, op2);
|
685 |
} |
686 |
|
687 |
@Override
|
688 |
public Code lt(Code op1, Code op2) {
|
689 |
return operator(OPERATOR_LT, op1, op2);
|
690 |
} |
691 |
|
692 |
@Override
|
693 |
public Code gt(Code op1, Code op2) {
|
694 |
return operator(OPERATOR_GT, op1, op2);
|
695 |
} |
696 |
|
697 |
@Override
|
698 |
public Code le(Code op1, Code op2) {
|
699 |
return operator(OPERATOR_LE, op1, op2);
|
700 |
} |
701 |
|
702 |
@Override
|
703 |
public Code ge(Code op1, Code op2) {
|
704 |
return operator(OPERATOR_GE, op1, op2);
|
705 |
} |
706 |
|
707 |
@Override
|
708 |
public Code eq(Code op1, Code op2) {
|
709 |
return operator(OPERATOR_EQ, op1, op2);
|
710 |
} |
711 |
|
712 |
@Override
|
713 |
public Code ne(Code op1, Code op2) {
|
714 |
return operator(OPERATOR_NE, op1, op2);
|
715 |
} |
716 |
|
717 |
@Override
|
718 |
public Code is(Code op1, Code op2) {
|
719 |
return operator(OPERATOR_IS, op1, op2);
|
720 |
} |
721 |
|
722 |
@Override
|
723 |
public Code getattr(Code obj, String attrname) { |
724 |
BaseCodes args = args(); |
725 |
args.add(obj); |
726 |
args.add(constant(attrname)); |
727 |
return function(GetattrFunction.NAME, args);
|
728 |
} |
729 |
|
730 |
@Override
|
731 |
public Code getitem(Code obj, Code index) {
|
732 |
BaseCodes args = args(); |
733 |
args.add(obj); |
734 |
args.add(index); |
735 |
return function(GetitemFunction.NAME, args);
|
736 |
} |
737 |
|
738 |
|
739 |
|
740 |
} |