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[bytom/vapor.git] / vendor / github.com / magiconair / properties / rangecheck.go

diff --git a/vendor/github.com/magiconair/properties/rangecheck.go b/vendor/github.com/magiconair/properties/rangecheck.go
new file mode 100644 (file)
index 0000000..2e907d5
--- /dev/null
+++ b/vendor/github.com/magiconair/properties/rangecheck.go
@@ -0,0 +1,31 @@
+// Copyright 2017 Frank Schroeder. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package properties
+
+import (
+       "fmt"
+       "math"
+)
+
+// make this a var to overwrite it in a test
+var is32Bit = ^uint(0) == math.MaxUint32
+
+// intRangeCheck checks if the value fits into the int type and
+// panics if it does not.
+func intRangeCheck(key string, v int64) int {
+       if is32Bit && (v < math.MinInt32 || v > math.MaxInt32) {
+               panic(fmt.Sprintf("Value %d for key %s out of range", v, key))
+       }
+       return int(v)
+}
+
+// uintRangeCheck checks if the value fits into the uint type and
+// panics if it does not.
+func uintRangeCheck(key string, v uint64) uint {
+       if is32Bit && v > math.MaxUint32 {
+               panic(fmt.Sprintf("Value %d for key %s out of range", v, key))
+       }
+       return uint(v)
+}