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optimizer: clean up again.

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This commit is contained in:
qiuyesuifeng
2016-01-03 12:40:23 +08:00
parent d1f0c76952
commit a8baf4fc02
1 changed files with 7 additions and 7 deletions
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14
optimizer/evaluator/evaluator.go
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@ -191,7 +191,7 @@ func (e *Evaluator) caseExpr(v *ast.CaseExpr) bool {
for _, val := range v.WhenClauses {
cmp, err := types.Compare(target, val.Expr.GetValue())
if err != nil {
e.err = err
e.err = errors.Trace(err)
return false
}
if cmp == 0 {
@ -268,7 +268,7 @@ func (e *Evaluator) patternIn(n *ast.PatternInExpr) bool {
}
r, err := types.Compare(n.Expr.GetValue(), v.GetValue())
if err != nil {
e.err = err
e.err = errors.Trace(err)
return false
}
if r == 0 {
@ -304,7 +304,7 @@ func (e *Evaluator) isTruth(v *ast.IsTruthExpr) bool {
if !types.IsNil(val) {
ival, err := types.ToBool(val)
if err != nil {
e.err = err
e.err = errors.Trace(err)
return false
}
if ival == v.True {
@ -357,7 +357,7 @@ func (e *Evaluator) unaryOperation(u *ast.UnaryOperationExpr) bool {
case opcode.Not:
n, err := types.ToBool(a)
if err != nil {
e.err = err
e.err = errors.Trace(err)
} else if n == 0 {
u.SetValue(int64(1))
} else {
@ -367,7 +367,7 @@ func (e *Evaluator) unaryOperation(u *ast.UnaryOperationExpr) bool {
// for bit operation, we will use int64 first, then return uint64
n, err := types.ToInt64(a)
if err != nil {
e.err = err
e.err = errors.Trace(err)
return false
}
u.SetValue(uint64(^n))
@ -460,14 +460,14 @@ func (e *Evaluator) unaryOperation(u *ast.UnaryOperationExpr) bool {
u.SetValue(mysql.ZeroDecimal.Sub(x.ToNumber()))
case string:
f, err := types.StrToFloat(x)
e.err = err
e.err = errors.Trace(err)
u.SetValue(-f)
case mysql.Decimal:
f, _ := x.Float64()
u.SetValue(mysql.NewDecimalFromFloat(-f))
case []byte:
f, err := types.StrToFloat(string(x))
e.err = err
e.err = errors.Trace(err)
u.SetValue(-f)
case mysql.Hex:
u.SetValue(-x.ToNumber())