117 lines
3.2 KiB
Go
117 lines
3.2 KiB
Go
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package optimizer
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import (
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"github.com/juju/errors"
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"github.com/pingcap/tidb/ast"
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"github.com/pingcap/tidb/expression"
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"github.com/pingcap/tidb/stmt"
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)
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// Compiler compiles ast.Node into an executable statement.
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type Compiler struct {
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paramMarkers []*expression.ParamMarker
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}
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// Compile compiles a ast.Node into an executable statement.
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func (com *Compiler) Compile(node ast.Node) (stmt.Statement, error) {
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validator := &validator{}
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if _, ok := node.Accept(validator); !ok {
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return nil, errors.Trace(validator.err)
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}
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// binder := &InfoBinder{}
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// if _, ok := node.Accept(validator); !ok {
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// return nil, errors.Trace(binder.Err)
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// }
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tpComputer := &typeComputer{}
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if _, ok := node.Accept(tpComputer); !ok {
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return nil, errors.Trace(tpComputer.err)
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}
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c := newExpressionConverter()
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defer func() {
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for _, v := range c.exprMap {
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if x, ok := v.(*expression.ParamMarker); ok {
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com.paramMarkers = append(com.paramMarkers, x)
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}
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}
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}()
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switch v := node.(type) {
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case *ast.InsertStmt:
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return convertInsert(c, v)
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case *ast.DeleteStmt:
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return convertDelete(c, v)
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case *ast.UpdateStmt:
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return convertUpdate(c, v)
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case *ast.SelectStmt:
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return convertSelect(c, v)
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case *ast.UnionStmt:
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return convertUnion(c, v)
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case *ast.CreateDatabaseStmt:
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return convertCreateDatabase(c, v)
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case *ast.DropDatabaseStmt:
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return convertDropDatabase(c, v)
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case *ast.CreateTableStmt:
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return convertCreateTable(c, v)
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case *ast.DropTableStmt:
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return convertDropTable(c, v)
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case *ast.CreateIndexStmt:
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return convertCreateIndex(c, v)
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case *ast.DropIndexStmt:
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return convertDropIndex(c, v)
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case *ast.AlterTableStmt:
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return convertAlterTable(c, v)
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case *ast.TruncateTableStmt:
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return convertTruncateTable(c, v)
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case *ast.ExplainStmt:
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return convertExplain(c, v)
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case *ast.PrepareStmt:
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return convertPrepare(c, v)
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case *ast.DeallocateStmt:
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return convertDeallocate(c, v)
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case *ast.ExecuteStmt:
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return convertExecute(c, v)
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case *ast.ShowStmt:
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return convertShow(c, v)
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case *ast.BeginStmt:
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return convertBegin(c, v)
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case *ast.CommitStmt:
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return convertCommit(c, v)
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case *ast.RollbackStmt:
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return convertRollback(c, v)
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case *ast.UseStmt:
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return convertUse(c, v)
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case *ast.SetStmt:
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return convertSet(c, v)
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case *ast.SetCharsetStmt:
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return convertSetCharset(c, v)
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case *ast.SetPwdStmt:
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return convertSetPwd(c, v)
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case *ast.CreateUserStmt:
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return convertCreateUser(c, v)
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case *ast.DoStmt:
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return convertDo(c, v)
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case *ast.GrantStmt:
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return convertGrant(c, v)
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}
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return nil, nil
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}
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// ParamMarkers returns parameter markers for prepared statement.
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func (com *Compiler) ParamMarkers() []*expression.ParamMarker {
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return com.paramMarkers
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}
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