1 files changed, 22 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/helper/hashcode/hashcode.go b/vendor/github.com/hashicorp/terraform/helper/hashcode/hashcode.go
new file mode 100644
index 00000000..64d8263e
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/helper/hashcode/hashcode.go
@@ -0,0 +1,22 @@
+package hashcode
+
+import (
+	"hash/crc32"
+)
+
+// String hashes a string to a unique hashcode.
+//
+// crc32 returns a uint32, but for our use we need
+// and non negative integer. Here we cast to an integer
+// and invert it if the result is negative.
+func String(s string) int {
+	v := int(crc32.ChecksumIEEE([]byte(s)))
+	if v >= 0 {
+		return v
+	}
+	if -v >= 0 {
+		return -v
+	}
+	// v == MinInt
+	return 0
+}