diff options
Diffstat (limited to 'core/vm/sqlvm/ast')
| -rw-r--r-- | core/vm/sqlvm/ast/ast.go | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/core/vm/sqlvm/ast/ast.go b/core/vm/sqlvm/ast/ast.go index 9a5afb202..e5de75d45 100644 --- a/core/vm/sqlvm/ast/ast.go +++ b/core/vm/sqlvm/ast/ast.go @@ -1109,9 +1109,32 @@ func (n *ForeignOptionNode) GetChildren() []Node { // Statements // --------------------------------------------------------------------------- +// StmtNode defines the interface of a statement. +type StmtNode interface { + Node + GetVerb() []byte + SetVerb([]byte) +} + +// StmtNodeBase is a base struct embedded by statement nodes. +type StmtNodeBase struct { + Verb []byte `print:"-"` +} + +// GetVerb returns the verb used to identify the statement. +func (n *StmtNodeBase) GetVerb() []byte { + return n.Verb +} + +// SetVerb sets the verb used to identify the statement. +func (n *StmtNodeBase) SetVerb(verb []byte) { + n.Verb = verb +} + // SelectStmtNode is SELECT. type SelectStmtNode struct { NodeBase + StmtNodeBase Column []ExprNode Table *IdentifierNode Where *WhereOptionNode @@ -1121,7 +1144,7 @@ type SelectStmtNode struct { Offset *OffsetOptionNode } -var _ Node = (*SelectStmtNode)(nil) +var _ StmtNode = (*SelectStmtNode)(nil) // GetChildren returns a list of child nodes used for traversing. func (n *SelectStmtNode) GetChildren() []Node { @@ -1172,12 +1195,13 @@ func (n *SelectStmtNode) GetChildren() []Node { // UpdateStmtNode is UPDATE. type UpdateStmtNode struct { NodeBase + StmtNodeBase Table *IdentifierNode Assignment []*AssignOperatorNode Where *WhereOptionNode } -var _ Node = (*UpdateStmtNode)(nil) +var _ StmtNode = (*UpdateStmtNode)(nil) // GetChildren returns a list of child nodes used for traversing. func (n *UpdateStmtNode) GetChildren() []Node { @@ -1203,11 +1227,12 @@ func (n *UpdateStmtNode) GetChildren() []Node { // DeleteStmtNode is DELETE. type DeleteStmtNode struct { NodeBase + StmtNodeBase Table *IdentifierNode Where *WhereOptionNode } -var _ Node = (*DeleteStmtNode)(nil) +var _ StmtNode = (*DeleteStmtNode)(nil) // GetChildren returns a list of child nodes used for traversing. func (n *DeleteStmtNode) GetChildren() []Node { @@ -1220,11 +1245,12 @@ func (n *DeleteStmtNode) GetChildren() []Node { // InsertStmtNode is INSERT. type InsertStmtNode struct { NodeBase + StmtNodeBase Table *IdentifierNode Insert Node } -var _ Node = (*InsertStmtNode)(nil) +var _ StmtNode = (*InsertStmtNode)(nil) // GetChildren returns a list of child nodes used for traversing. func (n *InsertStmtNode) GetChildren() []Node { @@ -1234,11 +1260,12 @@ func (n *InsertStmtNode) GetChildren() []Node { // CreateTableStmtNode is CREATE TABLE. type CreateTableStmtNode struct { NodeBase + StmtNodeBase Table *IdentifierNode Column []*ColumnSchemaNode } -var _ Node = (*CreateTableStmtNode)(nil) +var _ StmtNode = (*CreateTableStmtNode)(nil) // GetChildren returns a list of child nodes used for traversing. func (n *CreateTableStmtNode) GetChildren() []Node { @@ -1274,13 +1301,14 @@ func (n *ColumnSchemaNode) GetChildren() []Node { // CreateIndexStmtNode is CREATE INDEX. type CreateIndexStmtNode struct { NodeBase + StmtNodeBase Index *IdentifierNode Table *IdentifierNode Column []*IdentifierNode Unique *UniqueOptionNode } -var _ Node = (*CreateIndexStmtNode)(nil) +var _ StmtNode = (*CreateIndexStmtNode)(nil) // GetChildren returns a list of child nodes used for traversing. func (n *CreateIndexStmtNode) GetChildren() []Node { |