Revision 46695 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/function/programming/CodeBlockFunction.java

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CodeBlockFunction.java
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package org.gvsig.expressionevaluator.impl.function.programming;
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import java.util.ArrayList;


  		




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import java.util.List;


  		




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import org.apache.commons.lang3.Range;


  		




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import org.apache.commons.lang3.StringUtils;


  		




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import org.apache.commons.lang3.mutable.MutableBoolean;


  		




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import org.gvsig.expressionevaluator.Code;


  		




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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 org.gvsig.expressionevaluator.Function;


  		




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import org.gvsig.expressionevaluator.Interpreter;


  		




  
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import static org.gvsig.expressionevaluator.impl.DefaultExpressionEvaluatorManager.resolveHostExpressions0;


  		




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import org.gvsig.expressionevaluator.impl.DefaultInterpreter;


  		




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import org.gvsig.expressionevaluator.spi.AbstractFunction;


  		




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import org.gvsig.tools.exception.BaseException;


  		




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import org.gvsig.tools.visitor.FilteredVisitable;


  		




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import org.gvsig.tools.visitor.VisitCanceledException;


  		




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@SuppressWarnings("UseSpecificCatch")


  		




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public class CodeBlockFunction extends AbstractFunction {


  		




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    public Object call(Interpreter interpreter, Codes args) throws Exception {


  		




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        Object value = null;


  		




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        for (Code statement : args) {


  		




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            statement = resolveHostExpressions((DefaultInterpreter) interpreter, statement);


  		




  
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            statement = resolveHostExpressions0((DefaultInterpreter) interpreter, statement);


  		




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            // LLamamos a runCode para que no atrape los returns.


  		




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            value = ((DefaultInterpreter) interpreter).runCode(statement);


  		




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        }


  		




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        return value;


  		




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    }


  		




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    /*friend*/ static Code resolveHostExpressions(DefaultInterpreter interpreter, Code statement) throws Exception {


  		




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        List<Code> hostExpressions = new ArrayList<>();


  		




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        statement.accept(


  		




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                (Object code) -> {


  		




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                    hostExpressions.add((Code) code);


  		




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                },


  		




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                (FilteredVisitable code) -> !(code instanceof Code.Callable


  		




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                    && StringUtils.equalsIgnoreCase(((Code.Callable) code).name(), ExpressionBuilder.FUNCTION_$HOSTEXPRESSION))


  		




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        );


  		




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        if (hostExpressions.isEmpty()) {


  		




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            return statement;


  		




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        }


  		




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        Code newstatement = (Code) statement.clone();


  		




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        hostExpressions.clear();


  		




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        newstatement.accept(


  		




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                (Object code) -> {


  		




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                    hostExpressions.add((Code) code);


  		




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                },


  		




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                (FilteredVisitable code) -> !(code instanceof Code.Callable


  		




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                    && StringUtils.equalsIgnoreCase(((Code.Callable) code).name(), ExpressionBuilder.FUNCTION_$HOSTEXPRESSION))


  		




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        );


  		




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        if (hostExpressions.isEmpty()) {


  		




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            return statement;


  		




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        }


  		




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        CodeBuilder codeBuilder = interpreter.getCodeBuilder();


  		




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        List<Code.Constant> constants = new ArrayList<>();


  		




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        for (Code hostExpression : hostExpressions) {


  		




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            Object v = interpreter.run(hostExpression);


  		




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            constants.add(codeBuilder.constant(v));


  		




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        }


  		




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        for (int i = 0; i < hostExpressions.size(); i++) {


  		




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            Code hostExpression = hostExpressions.get(i);


  		




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            Code value = constants.get(i);


  		




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            newstatement.replace(hostExpression, value);


  		




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        }


  		




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        return newstatement;


  		




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//        return statement;


  		




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    }


  		




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}


  		












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