1 files changed, 26 insertions, 0 deletions
diff --git a/vendor/github.com/chenzhuoyu/iasm/expr/pools.go b/vendor/github.com/chenzhuoyu/iasm/expr/pools.go
new file mode 100644
index 000000000..fde422ee6
--- /dev/null
+++ b/vendor/github.com/chenzhuoyu/iasm/expr/pools.go
@@ -0,0 +1,26 @@
+package expr
+
+import (
+    `sync`
+)
+
+var (
+    expressionPool sync.Pool
+)
+
+func newExpression() *Expr {
+    if v := expressionPool.Get(); v == nil {
+        return new(Expr)
+    } else {
+        return resetExpression(v.(*Expr))
+    }
+}
+
+func freeExpression(p *Expr) {
+    expressionPool.Put(p)
+}
+
+func resetExpression(p *Expr) *Expr {
+    *p = Expr{}
+    return p
+}