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AlterTableChangeColumnMixin.kt
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AlterTableChangeColumnMixin.kt
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package app.cash.sqldelight.dialects.mysql.grammar.mixins
import app.cash.sqldelight.dialects.mysql.grammar.psi.MySqlAlterTableChangeColumn
import com.alecstrong.sql.psi.core.SqlAnnotationHolder
import com.alecstrong.sql.psi.core.psi.AlterTableApplier
import com.alecstrong.sql.psi.core.psi.LazyQuery
import com.alecstrong.sql.psi.core.psi.QueryElement
import com.alecstrong.sql.psi.core.psi.SqlColumnDef
import com.alecstrong.sql.psi.core.psi.SqlColumnName
import com.alecstrong.sql.psi.core.psi.SqlCompositeElementImpl
import com.alecstrong.sql.psi.core.psi.alterStmt
import com.intellij.lang.ASTNode
internal abstract class AlterTableChangeColumnMixin(
node: ASTNode,
) : SqlCompositeElementImpl(node),
MySqlAlterTableChangeColumn,
AlterTableApplier {
private val columnName
get() = children.filterIsInstance<SqlColumnName>().single()
private val columnDef
get() = children.filterIsInstance<SqlColumnDef>().single()
override fun applyTo(lazyQuery: LazyQuery): LazyQuery {
return LazyQuery(
tableName = lazyQuery.tableName,
query = {
val columns = placementClause.placeInQuery(
columns = lazyQuery.query.columns,
column = QueryElement.QueryColumn(columnDef.columnName),
replace = lazyQuery.query.columns.singleOrNull { (it.element as SqlColumnName).textMatches(columnName) },
)
lazyQuery.query.copy(columns = columns)
},
)
}
override fun annotate(annotationHolder: SqlAnnotationHolder) {
super.annotate(annotationHolder)
if (tablesAvailable(this)
.filter { it.tableName.textMatches(alterStmt.tableName) }
.flatMap { it.query.columns }
.none { (it.element as? SqlColumnName)?.textMatches(columnName) == true }
) {
annotationHolder.createErrorAnnotation(
element = columnDef.columnName,
s = "No column found to modify with name ${columnDef.columnName.text}",
)
}
}
}