mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-31 00:27:47 +02:00
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
508 lines
11 KiB
Go
508 lines
11 KiB
Go
// Copyright 2015 PingCAP, 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,
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package ast
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/pingcap/tidb/context"
|
|
"github.com/pingcap/tidb/model"
|
|
"github.com/pingcap/tidb/mysql"
|
|
"github.com/pingcap/tidb/sessionctx/db"
|
|
)
|
|
|
|
var (
|
|
_ StmtNode = &AdminStmt{}
|
|
_ StmtNode = &BeginStmt{}
|
|
_ StmtNode = &CommitStmt{}
|
|
_ StmtNode = &CreateUserStmt{}
|
|
_ StmtNode = &DeallocateStmt{}
|
|
_ StmtNode = &DoStmt{}
|
|
_ StmtNode = &ExecuteStmt{}
|
|
_ StmtNode = &ExplainStmt{}
|
|
_ StmtNode = &GrantStmt{}
|
|
_ StmtNode = &PrepareStmt{}
|
|
_ StmtNode = &RollbackStmt{}
|
|
_ StmtNode = &SetCharsetStmt{}
|
|
_ StmtNode = &SetPwdStmt{}
|
|
_ StmtNode = &SetStmt{}
|
|
_ StmtNode = &UseStmt{}
|
|
|
|
_ Node = &PrivElem{}
|
|
_ Node = &VariableAssignment{}
|
|
)
|
|
|
|
// TypeOpt is used for parsing data type option from SQL.
|
|
type TypeOpt struct {
|
|
IsUnsigned bool
|
|
IsZerofill bool
|
|
}
|
|
|
|
// FloatOpt is used for parsing floating-point type option from SQL.
|
|
// See: http://dev.mysql.com/doc/refman/5.7/en/floating-point-types.html
|
|
type FloatOpt struct {
|
|
Flen int
|
|
Decimal int
|
|
}
|
|
|
|
// AuthOption is used for parsing create use statement.
|
|
type AuthOption struct {
|
|
// AuthString/HashString can be empty, so we need to decide which one to use.
|
|
ByAuthString bool
|
|
AuthString string
|
|
HashString string
|
|
// TODO: support auth_plugin
|
|
}
|
|
|
|
// ExplainStmt is a statement to provide information about how is SQL statement executed
|
|
// or get columns information in a table.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/explain.html
|
|
type ExplainStmt struct {
|
|
stmtNode
|
|
|
|
Stmt StmtNode
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *ExplainStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*ExplainStmt)
|
|
node, ok := n.Stmt.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Stmt = node.(DMLNode)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// PrepareStmt is a statement to prepares a SQL statement which contains placeholders,
|
|
// and it is executed with ExecuteStmt and released with DeallocateStmt.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/prepare.html
|
|
type PrepareStmt struct {
|
|
stmtNode
|
|
|
|
Name string
|
|
SQLText string
|
|
SQLVar *VariableExpr
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *PrepareStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*PrepareStmt)
|
|
if n.SQLVar != nil {
|
|
node, ok := n.SQLVar.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.SQLVar = node.(*VariableExpr)
|
|
}
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// DeallocateStmt is a statement to release PreparedStmt.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/deallocate-prepare.html
|
|
type DeallocateStmt struct {
|
|
stmtNode
|
|
|
|
Name string
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *DeallocateStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*DeallocateStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// ExecuteStmt is a statement to execute PreparedStmt.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/execute.html
|
|
type ExecuteStmt struct {
|
|
stmtNode
|
|
|
|
Name string
|
|
UsingVars []ExprNode
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *ExecuteStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*ExecuteStmt)
|
|
for i, val := range n.UsingVars {
|
|
node, ok := val.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.UsingVars[i] = node.(ExprNode)
|
|
}
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// BeginStmt is a statement to start a new transaction.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/commit.html
|
|
type BeginStmt struct {
|
|
stmtNode
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *BeginStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*BeginStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// CommitStmt is a statement to commit the current transaction.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/commit.html
|
|
type CommitStmt struct {
|
|
stmtNode
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *CommitStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*CommitStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// RollbackStmt is a statement to roll back the current transaction.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/commit.html
|
|
type RollbackStmt struct {
|
|
stmtNode
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *RollbackStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*RollbackStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// UseStmt is a statement to use the DBName database as the current database.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/use.html
|
|
type UseStmt struct {
|
|
stmtNode
|
|
|
|
DBName string
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *UseStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*UseStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// VariableAssignment is a variable assignment struct.
|
|
type VariableAssignment struct {
|
|
node
|
|
Name string
|
|
Value ExprNode
|
|
IsGlobal bool
|
|
IsSystem bool
|
|
}
|
|
|
|
// Accept implements Node interface.
|
|
func (n *VariableAssignment) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*VariableAssignment)
|
|
node, ok := n.Value.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Value = node.(ExprNode)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// SetStmt is the statement to set variables.
|
|
type SetStmt struct {
|
|
stmtNode
|
|
// Variables is the list of variable assignment.
|
|
Variables []*VariableAssignment
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *SetStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*SetStmt)
|
|
for i, val := range n.Variables {
|
|
node, ok := val.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Variables[i] = node.(*VariableAssignment)
|
|
}
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// SetCharsetStmt is a statement to assign values to character and collation variables.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/set-statement.html
|
|
type SetCharsetStmt struct {
|
|
stmtNode
|
|
|
|
Charset string
|
|
Collate string
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *SetCharsetStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*SetCharsetStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// SetPwdStmt is a statement to assign a password to user account.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/set-password.html
|
|
type SetPwdStmt struct {
|
|
stmtNode
|
|
|
|
User string
|
|
Password string
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *SetPwdStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*SetPwdStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// UserSpec is used for parsing create user statement.
|
|
type UserSpec struct {
|
|
User string
|
|
AuthOpt *AuthOption
|
|
}
|
|
|
|
// CreateUserStmt creates user account.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/create-user.html
|
|
type CreateUserStmt struct {
|
|
stmtNode
|
|
|
|
IfNotExists bool
|
|
Specs []*UserSpec
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *CreateUserStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*CreateUserStmt)
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// DoStmt is the struct for DO statement.
|
|
type DoStmt struct {
|
|
stmtNode
|
|
|
|
Exprs []ExprNode
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *DoStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*DoStmt)
|
|
for i, val := range n.Exprs {
|
|
node, ok := val.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Exprs[i] = node.(ExprNode)
|
|
}
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// AdminStmtType is the type for admin statement.
|
|
type AdminStmtType int
|
|
|
|
// Admin statement types.
|
|
const (
|
|
AdminShowDDL = iota + 1
|
|
AdminCheckTable
|
|
)
|
|
|
|
// AdminStmt is the struct for Admin statement.
|
|
type AdminStmt struct {
|
|
stmtNode
|
|
|
|
Tp AdminStmtType
|
|
Tables []*TableName
|
|
}
|
|
|
|
// Accept implements Node Accpet interface.
|
|
func (n *AdminStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
|
|
n = newNode.(*AdminStmt)
|
|
for i, val := range n.Tables {
|
|
node, ok := val.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Tables[i] = node.(*TableName)
|
|
}
|
|
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// PrivElem is the privilege type and optional column list.
|
|
type PrivElem struct {
|
|
node
|
|
|
|
Priv mysql.PrivilegeType
|
|
Cols []*ColumnName
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *PrivElem) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*PrivElem)
|
|
for i, val := range n.Cols {
|
|
node, ok := val.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Cols[i] = node.(*ColumnName)
|
|
}
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// ObjectTypeType is the type for object type.
|
|
type ObjectTypeType int
|
|
|
|
const (
|
|
// ObjectTypeNone is for empty object type.
|
|
ObjectTypeNone ObjectTypeType = iota + 1
|
|
// ObjectTypeTable means the following object is a table.
|
|
ObjectTypeTable
|
|
)
|
|
|
|
// GrantLevelType is the type for grant level.
|
|
type GrantLevelType int
|
|
|
|
const (
|
|
// GrantLevelNone is the dummy const for default value.
|
|
GrantLevelNone GrantLevelType = iota + 1
|
|
// GrantLevelGlobal means the privileges are administrative or apply to all databases on a given server.
|
|
GrantLevelGlobal
|
|
// GrantLevelDB means the privileges apply to all objects in a given database.
|
|
GrantLevelDB
|
|
// GrantLevelTable means the privileges apply to all columns in a given table.
|
|
GrantLevelTable
|
|
)
|
|
|
|
// GrantLevel is used for store the privilege scope.
|
|
type GrantLevel struct {
|
|
Level GrantLevelType
|
|
DBName string
|
|
TableName string
|
|
}
|
|
|
|
// GrantStmt is the struct for GRANT statement.
|
|
type GrantStmt struct {
|
|
stmtNode
|
|
|
|
Privs []*PrivElem
|
|
ObjectType ObjectTypeType
|
|
Level *GrantLevel
|
|
Users []*UserSpec
|
|
}
|
|
|
|
// Accept implements Node Accept interface.
|
|
func (n *GrantStmt) Accept(v Visitor) (Node, bool) {
|
|
newNode, skipChildren := v.Enter(n)
|
|
if skipChildren {
|
|
return v.Leave(newNode)
|
|
}
|
|
n = newNode.(*GrantStmt)
|
|
for i, val := range n.Privs {
|
|
node, ok := val.Accept(v)
|
|
if !ok {
|
|
return n, false
|
|
}
|
|
n.Privs[i] = node.(*PrivElem)
|
|
}
|
|
return v.Leave(n)
|
|
}
|
|
|
|
// Ident is the table identifier composed of schema name and table name.
|
|
type Ident struct {
|
|
Schema model.CIStr
|
|
Name model.CIStr
|
|
}
|
|
|
|
// Full returns an Ident which set schema to the current schema if it is empty.
|
|
func (i Ident) Full(ctx context.Context) (full Ident) {
|
|
full.Name = i.Name
|
|
if i.Schema.O != "" {
|
|
full.Schema = i.Schema
|
|
} else {
|
|
full.Schema = model.NewCIStr(db.GetCurrentSchema(ctx))
|
|
}
|
|
return
|
|
}
|
|
|
|
// String implements fmt.Stringer interface
|
|
func (i Ident) String() string {
|
|
if i.Schema.O == "" {
|
|
return i.Name.O
|
|
}
|
|
return fmt.Sprintf("%s.%s", i.Schema, i.Name)
|
|
}
|