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package sqlvm
import (
"fmt"
"reflect"
"github.com/shopspring/decimal"
)
type identifierNode string
type valuer interface {
value() interface{}
}
type boolValueNode bool
func (n boolValueNode) value() interface{} { return bool(n) }
type integerValueNode struct {
v decimal.Decimal
address bool
}
func (n integerValueNode) value() interface{} { return n.v }
func (n integerValueNode) String() string { return n.v.String() }
type decimalValueNode decimal.Decimal
func (n decimalValueNode) value() interface{} { return decimal.Decimal(n) }
func (n decimalValueNode) String() string { return decimal.Decimal(n).String() }
type bytesValueNode []byte
func (n bytesValueNode) value() interface{} { return []byte(n) }
func (n bytesValueNode) String() string { return string(n) }
type anyValueNode struct{}
func (n anyValueNode) value() interface{} { return n }
type defaultValueNode struct{}
func (n defaultValueNode) value() interface{} { return n }
type nullValueNode struct{}
func (n nullValueNode) value() interface{} { return n }
type intTypeNode struct {
size int32
unsigned bool
}
type fixedTypeNode struct {
integerSize int32
fractionalSize int32
unsigned bool
}
type dynamicBytesTypeNode struct{}
type fixedBytesTypeNode struct {
size int32
}
type addressTypeNode struct{}
type boolTypeNode struct{}
type unaryOperator interface {
getTarget() interface{}
setTarget(interface{})
}
type binaryOperator interface {
getObject() interface{}
getSubject() interface{}
setObject(interface{})
setSubject(interface{})
}
type unaryOperatorNode struct {
target interface{}
}
func (n unaryOperatorNode) getTarget() interface{} {
return n.target
}
func (n *unaryOperatorNode) setTarget(t interface{}) {
n.target = t
}
type binaryOperatorNode struct {
object interface{}
subject interface{}
}
func (n binaryOperatorNode) getObject() interface{} {
return n.object
}
func (n binaryOperatorNode) getSubject() interface{} {
return n.subject
}
func (n *binaryOperatorNode) setObject(o interface{}) {
n.object = o
}
func (n *binaryOperatorNode) setSubject(s interface{}) {
n.subject = s
}
type posOperatorNode struct{ unaryOperatorNode }
type negOperatorNode struct{ unaryOperatorNode }
type notOperatorNode struct{ unaryOperatorNode }
type andOperatorNode struct{ binaryOperatorNode }
type orOperatorNode struct{ binaryOperatorNode }
type greaterOrEqualOperatorNode struct{ binaryOperatorNode }
type lessOrEqualOperatorNode struct{ binaryOperatorNode }
type notEqualOperatorNode struct{ binaryOperatorNode }
type equalOperatorNode struct{ binaryOperatorNode }
type greaterOperatorNode struct{ binaryOperatorNode }
type lessOperatorNode struct{ binaryOperatorNode }
type concatOperatorNode struct{ binaryOperatorNode }
type addOperatorNode struct{ binaryOperatorNode }
type subOperatorNode struct{ binaryOperatorNode }
type mulOperatorNode struct{ binaryOperatorNode }
type divOperatorNode struct{ binaryOperatorNode }
type modOperatorNode struct{ binaryOperatorNode }
type inOperatorNode struct{ binaryOperatorNode }
type isOperatorNode struct{ binaryOperatorNode }
type likeOperatorNode struct{ binaryOperatorNode }
type castOperatorNode struct{ binaryOperatorNode }
type assignOperatorNode struct{ binaryOperatorNode }
type functionOperatorNode struct{ binaryOperatorNode }
type optional interface {
getOption() map[string]interface{}
}
type nilOptionNode struct{}
func (n nilOptionNode) getOption() map[string]interface{} { return nil }
type whereOptionNode struct {
condition interface{}
}
func (n whereOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"condition": n.condition,
}
}
type orderOptionNode struct {
expr interface{}
desc bool
nullfirst bool
}
func (n orderOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"expr": n.expr,
"desc": n.desc,
"nullfirst": n.nullfirst,
}
}
type groupOptionNode struct {
expr interface{}
}
func (n groupOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"expr": n.expr,
}
}
type offsetOptionNode struct {
value integerValueNode
}
func (n offsetOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"value": n.value,
}
}
type limitOptionNode struct {
value integerValueNode
}
func (n limitOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"value": n.value,
}
}
type insertWithColumnOptionNode struct {
column []interface{}
value []interface{}
}
func (n insertWithColumnOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"column": n.column,
"value": n.value,
}
}
type insertWithDefaultOptionNode struct{ nilOptionNode }
type primaryOptionNode struct{ nilOptionNode }
type notNullOptionNode struct{ nilOptionNode }
type uniqueOptionNode struct{ nilOptionNode }
type autoincrementOptionNode struct{ nilOptionNode }
type defaultOptionNode struct {
value interface{}
}
func (n defaultOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"value": n.value,
}
}
type foreignOptionNode struct {
table identifierNode
column identifierNode
}
func (n foreignOptionNode) getOption() map[string]interface{} {
return map[string]interface{}{
"table": n.table,
"column": n.column,
}
}
type selectStmtNode struct {
column []interface{}
table *identifierNode
where *whereOptionNode
group []interface{}
order []interface{}
limit *limitOptionNode
offset *offsetOptionNode
}
func (n selectStmtNode) getOption() map[string]interface{} {
return map[string]interface{}{
"column": n.column,
"table": n.table,
"where": n.where,
"group": n.group,
"order": n.order,
"limit": n.limit,
"offset": n.offset,
}
}
type updateStmtNode struct {
table identifierNode
assignment []interface{}
where *whereOptionNode
}
func (n updateStmtNode) getOption() map[string]interface{} {
return map[string]interface{}{
"table": n.table,
"assignment": n.assignment,
"where": n.where,
}
}
type deleteStmtNode struct {
table identifierNode
where *whereOptionNode
}
func (n deleteStmtNode) getOption() map[string]interface{} {
return map[string]interface{}{
"table": n.table,
"where": n.where,
}
}
type insertStmtNode struct {
table identifierNode
insert interface{}
}
func (n insertStmtNode) getOption() map[string]interface{} {
return map[string]interface{}{
"table": n.table,
"insert": n.insert,
}
}
type createTableStmtNode struct {
table identifierNode
column []interface{}
}
func (n createTableStmtNode) getOption() map[string]interface{} {
return map[string]interface{}{
"table": n.table,
"column": n.column,
}
}
type columnSchemaNode struct {
column identifierNode
dataType interface{}
constraint []interface{}
}
func (n columnSchemaNode) getOption() map[string]interface{} {
return map[string]interface{}{
"column": n.column,
"data_type": n.dataType,
"constraint": n.constraint,
}
}
type createIndexStmtNode struct {
index identifierNode
table identifierNode
column []interface{}
unique *uniqueOptionNode
}
func (n createIndexStmtNode) getOption() map[string]interface{} {
return map[string]interface{}{
"index": n.index,
"table": n.table,
"column": n.column,
"unique": n.unique,
}
}
// PrintAST prints ast to stdout.
func PrintAST(n interface{}, indent string) {
if n == nil {
fmt.Printf("%snil\n", indent)
return
}
typeOf := reflect.TypeOf(n)
valueOf := reflect.ValueOf(n)
name := ""
if typeOf.Kind() == reflect.Ptr {
if valueOf.IsNil() {
fmt.Printf("%snil\n", indent)
return
}
name = "*"
valueOf = valueOf.Elem()
typeOf = typeOf.Elem()
}
name = name + typeOf.Name()
if op, ok := n.(optional); ok {
fmt.Printf("%s%s", indent, name)
m := op.getOption()
if m == nil {
fmt.Printf("\n")
return
}
fmt.Printf(":\n")
for k := range m {
fmt.Printf("%s %s:\n", indent, k)
PrintAST(m[k], indent+" ")
}
return
}
if op, ok := n.(unaryOperator); ok {
fmt.Printf("%s%s:\n", indent, name)
fmt.Printf("%s target:\n", indent)
PrintAST(op.getTarget(), indent+" ")
return
}
if op, ok := n.(binaryOperator); ok {
fmt.Printf("%s%s:\n", indent, name)
fmt.Printf("%s object:\n", indent)
PrintAST(op.getObject(), indent+" ")
fmt.Printf("%s subject:\n", indent)
PrintAST(op.getSubject(), indent+" ")
return
}
if arr, ok := n.([]interface{}); ok {
fmt.Printf("%s[\n", indent)
for idx := range arr {
PrintAST(arr[idx], indent+" ")
}
fmt.Printf("%s]\n", indent)
return
}
if stringer, ok := n.(fmt.Stringer); ok {
fmt.Printf("%s%s: %s\n", indent, name, stringer.String())
return
}
fmt.Printf("%s%s: %+v\n", indent, name, valueOf.Interface())
}
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