/*
 *     Copyright 2010 Jean-Paul Balabanian and Yngve Devik Hammersland
 *
 *     This file is part of glsl4idea.
 *
 *     Glsl4idea is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as
 *     published by the Free Software Foundation, either version 3 of
 *     the License, or (at your option) any later version.
 *
 *     Glsl4idea is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with glsl4idea.  If not, see <http://www.gnu.org/licenses/>.
 */

package glslplugin.annotation.impl;

import com.intellij.lang.annotation.AnnotationHolder;
import glslplugin.annotation.Annotator;
import glslplugin.lang.elements.GLSLIdentifier;
import glslplugin.lang.elements.expressions.GLSLExpression;
import glslplugin.lang.elements.expressions.GLSLFieldSelectionExpression;
import glslplugin.lang.elements.types.GLSLStructType;
import glslplugin.lang.elements.types.GLSLType;
import org.jetbrains.annotations.NotNull;

public class MemberCheckAnnotation extends Annotator<GLSLFieldSelectionExpression> {
    public void annotate(GLSLFieldSelectionExpression expr, AnnotationHolder holder) {
        GLSLExpression leftHandExpression = expr.getLeftHandExpression();
        if(leftHandExpression == null)return;

        GLSLType leftHandType = leftHandExpression.getType();

        if (leftHandType instanceof GLSLStructType) {
            GLSLIdentifier memberIdentifier = expr.getMemberIdentifier();
            if(memberIdentifier == null)return;
            if (!leftHandType.hasMember(memberIdentifier.getName())) {
                holder.createErrorAnnotation(memberIdentifier, "Unknown member for " + leftHandType.getTypename());
            }

        }

    }

    @NotNull
    @Override
    public Class<GLSLFieldSelectionExpression> getElementType() {
        return GLSLFieldSelectionExpression.class;
    }
}