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IntermediateType.kt
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IntermediateType.kt
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/*
* Copyright (C) 2017 Square, Inc.
*
* 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 app.cash.sqldelight.core.lang
import app.cash.sqldelight.core.compiler.integration.adapterName
import app.cash.sqldelight.core.compiler.integration.adapterProperty
import app.cash.sqldelight.core.lang.psi.ColumnTypeMixin
import app.cash.sqldelight.core.lang.util.isArrayParameter
import app.cash.sqldelight.dialect.api.IntermediateType
import com.alecstrong.sql.psi.core.psi.Queryable
import com.intellij.psi.util.PsiTreeUtil
import com.squareup.kotlinpoet.CodeBlock
import com.squareup.kotlinpoet.ParameterizedTypeName.Companion.parameterizedBy
import com.squareup.kotlinpoet.PropertySpec
import com.squareup.kotlinpoet.asClassName
internal fun IntermediateType.argumentType() = if (bindArg?.isArrayParameter() == true) {
Collection::class.asClassName().parameterizedBy(javaType)
} else {
javaType
}
/**
* @return A [CodeBlock] which binds this type to [columnIndex] on [STATEMENT_NAME].
*
* eg: statement.bindBytes(0, tableNameAdapter.columnNameAdapter.encode(column))
*/
internal fun IntermediateType.preparedStatementBinder(
columnIndex: String,
extractedVariable: String? = null
): CodeBlock {
val codeBlock = extractedVariable?.let { CodeBlock.of(it) } ?: encodedJavaType()
if (codeBlock != null) {
return dialectType.prepareStatementBinder(columnIndex, codeBlock)
}
val name = if (javaType.isNullable) "it" else this.name
val decodedType = CodeBlock.of(name)
val encodedType = dialectType.encode(decodedType)
return dialectType.prepareStatementBinder(
columnIndex,
when {
decodedType == encodedType -> CodeBlock.of(this.name)
javaType.isNullable -> encodedType.wrapInLet(this)
else -> encodedType
}
)
}
internal fun IntermediateType.encodedJavaType(): CodeBlock? {
val name = if (javaType.isNullable) "it" else this.name
return (column?.columnType as ColumnTypeMixin?)?.adapter()?.let { adapter ->
val parent = PsiTreeUtil.getParentOfType(column, Queryable::class.java)
val adapterName = parent!!.tableExposed().adapterName
val value = dialectType.encode(
CodeBlock.of("$adapterName.%N.encode($name)", adapter)
)
if (javaType.isNullable) {
value.wrapInLet(this)
} else {
value
}
}
}
private fun CodeBlock.wrapInLet(type: IntermediateType): CodeBlock {
return CodeBlock.builder()
.add("${type.name}?.let { ")
.add(this)
.add(" }")
.build()
}
internal fun IntermediateType.cursorGetter(columnIndex: Int): CodeBlock {
var cursorGetter = dialectType.cursorGetter(columnIndex, CURSOR_NAME)
if (!javaType.isNullable) {
cursorGetter = CodeBlock.of("%L!!", cursorGetter)
}
return (column?.columnType as ColumnTypeMixin?)?.adapter()?.let { adapter ->
val adapterName =
PsiTreeUtil.getParentOfType(column, Queryable::class.java)!!.tableExposed().adapterName
if (javaType.isNullable) {
CodeBlock.of(
"%L?.let { $adapterName.%N.decode(%L) }", cursorGetter, adapter,
dialectType.decode(CodeBlock.of("it"))
)
} else {
CodeBlock.of("$adapterName.%N.decode(%L)", adapter, dialectType.decode(cursorGetter))
}
} ?: run {
val encodedType = cursorGetter
val decodedType = dialectType.decode(encodedType)
if (javaType.isNullable && encodedType != decodedType) {
CodeBlock.of("%L?.let { %L }", cursorGetter, dialectType.decode(CodeBlock.of("it")))
} else {
decodedType
}
}
}
internal fun IntermediateType.parentAdapter(): PropertySpec? {
if ((column?.columnType as? ColumnTypeMixin)?.adapter() == null) return null
return PsiTreeUtil.getParentOfType(column, Queryable::class.java)!!.tableExposed().adapterProperty()
}