zio.jdbc.SqlInterpolator.scala Maven / Gradle / Ivy
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/*
* Copyright 2022 John A. De Goes and the ZIO Contributors
*
* 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.
*/
package zio.jdbc
/**
* An interpolator for SQL strings, which produces `SqlFragment` values.
*
* @param context The `StringContext` on which the string interpolator is added.
*/
final class SqlInterpolator(val context: StringContext) extends AnyVal {
def sql(params: SqlFragment.Segment*): SqlFragment = SqlFragment.fromFunction { chunkBuilder =>
val syntaxIterator = context.parts.iterator
val paramsIterator = params.iterator
while (syntaxIterator.hasNext) {
val syntax = syntaxIterator.next()
chunkBuilder += (if (syntax.isEmpty) SqlFragment.Segment.empty else SqlFragment.Segment.Syntax(syntax))
if (paramsIterator.hasNext) chunkBuilder += paramsIterator.next()
}
while (paramsIterator.hasNext)
chunkBuilder += paramsIterator.next()
}
}