/* JavaCCOptions:MULTI=true,NODE_USES_PARSER=true,VISITOR=false,TRACK_TOKENS=false,NODE_PREFIX=AST,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */

/*

* © Copyright FOCONIS AG, 2014

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at:

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or

* implied. See the License for the specific language governing

* permissions and limitations under the License.

*

*/

  public ASTAtFocEval(final AtFormulaParserImpl p, final int id) {

    super(p, id);

  }

  /**

   * Evaluates every entry and returns the last one

   */

  @Override

  public ValueHolder evaluate(final FormulaContext ctx) throws FormulaReturnException {

    ValueHolder vhEval = children[0].evaluate(ctx);

    if (vhEval.dataType == DataType.ERROR)

      return vhEval;

    ValueHolder ret[] = new ValueHolder[vhEval.size];

    int size = 0;

    try {

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

        String toEval = vhEval.getString(i);

        Node n = (Node) ctx.getParser().parse(toEval, true);

        ValueHolder vh = ret[i] = n.evaluate(ctx);

        if (vh.dataType == DataType.ERROR)

          return ret[i];

        size += vh.size;

      }

      ValueHolder vh = ret[0].newInstance(size);

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

        vh.addAll(ret[i]);

      }

      return vh;

    } catch (FormulaParseException e) {

      return ValueHolder.valueOf(new EvaluateException(codeLine, codeColumn, e));

    }

  }

  /*

   * (non-Javadoc)

   * @see org.openntf.formula.ast.SimpleNode#analyzeThis(java.util.Set, java.util.Set, java.util.Set, java.util.Set)

   */

  @Override

  protected void analyzeThis(final Set<String> readFields, final Set<String> modifiedFields, final Set<String> variables,

      final Set<String> functions) {

    functions.add("@foceval");

  }

}