SqlDefaultCompiler.cs

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// 
//  Copyright 2010-2015 Deveel
// 
//    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.
//

using System;

using Deveel.Data.Serialization;
using Deveel.Data.Sql.Parser;
using Deveel.Data.Sql.Statements;
using Deveel.Data.Types;

namespace Deveel.Data.Sql.Compile {
    public sealed class SqlDefaultCompiler : ISqlCompiler {
        public SqlCompileResult Compile(SqlCompileContext context) {
            if (context == null)
                throw new ArgumentNullException("context");

            var compileResult = new SqlCompileResult(context);

            try {
                var sqlSource = context.SourceText;
                var result = SqlParsers.Default.Parse(sqlSource);

                foreach (var error in result.Errors) {
                    var location = new SourceLocation(error.Line, error.Column);
                    compileResult.Messages.Add(new SqlCompileMessage(CompileMessageLevel.Error, error.Message, location));
                }

                ITypeResolver typeResolver = null;
                if (context.Context != null)
                    typeResolver = context.Context.TypeResolver();

                var builder = new StatementBuilder(typeResolver);
                var statements = builder.Build(result.RootNode);

                foreach (var statement in statements) {
                    compileResult.Statements.Add(statement);
                }

            } catch (SqlParseException ex) {
                compileResult.Messages.Add(new SqlCompileMessage(CompileMessageLevel.Error, ex.Message));
            } catch (Exception ex) {
                compileResult.Messages.Add(new SqlCompileMessage(CompileMessageLevel.Error, ex.Message));
            }

            return compileResult;
        }

        public void Dispose() {
        }
    }
}