From ab9b3b685163f9944f0ca00c347a0d3f6093113b Mon Sep 17 00:00:00 2001
From: He Weidong <zlhwd@qq.com>
Date: Sat, 9 Jan 2021 17:48:36 +0800
Subject: [PATCH] enable parse and shorten negative FIL values

---
 chain/types/fil.go      |  4 ++--
 chain/types/fil_test.go | 46 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 2 deletions(-)

diff --git a/chain/types/fil.go b/chain/types/fil.go
index 6742dd18000..223ed3c5095 100644
--- a/chain/types/fil.go
+++ b/chain/types/fil.go
@@ -26,7 +26,7 @@ func (f FIL) Unitless() string {
 var unitPrefixes = []string{"a", "f", "p", "n", "μ", "m"}
 
 func (f FIL) Short() string {
-	n := BigInt(f)
+	n := BigInt(f).Abs()
 
 	dn := uint64(1)
 	var prefix string
@@ -70,7 +70,7 @@ func (f FIL) UnmarshalText(text []byte) error {
 }
 
 func ParseFIL(s string) (FIL, error) {
-	suffix := strings.TrimLeft(s, ".1234567890")
+	suffix := strings.TrimLeft(s, "-.1234567890")
 	s = s[:len(s)-len(suffix)]
 	var attofil bool
 	if suffix != "" {
diff --git a/chain/types/fil_test.go b/chain/types/fil_test.go
index 6cbc44c5f9b..7bf2a802ede 100644
--- a/chain/types/fil_test.go
+++ b/chain/types/fil_test.go
@@ -57,6 +57,52 @@ func TestFilShort(t *testing.T) {
 		{fil: "0.000221234", expect: "221.234 μFIL"},
 		{fil: "0.0002212344", expect: "221.234 μFIL"},
 		{fil: "0.00022123444", expect: "221.234 μFIL"},
+
+		{fil: "-1", expect: "-1 FIL"},
+		{fil: "-1.1", expect: "-1.1 FIL"},
+		{fil: "-12", expect: "-12 FIL"},
+		{fil: "-123", expect: "-123 FIL"},
+		{fil: "-123456", expect: "-123456 FIL"},
+		{fil: "-123.23", expect: "-123.23 FIL"},
+		{fil: "-123456.234", expect: "-123456.234 FIL"},
+		{fil: "-123456.2341234", expect: "-123456.234 FIL"},
+		{fil: "-123456.234123445", expect: "-123456.234 FIL"},
+
+		{fil: "-0.1", expect: "-100 mFIL"},
+		{fil: "-0.01", expect: "-10 mFIL"},
+		{fil: "-0.001", expect: "-1 mFIL"},
+
+		{fil: "-0.0001", expect: "-100 μFIL"},
+		{fil: "-0.00001", expect: "-10 μFIL"},
+		{fil: "-0.000001", expect: "-1 μFIL"},
+
+		{fil: "-0.0000001", expect: "-100 nFIL"},
+		{fil: "-0.00000001", expect: "-10 nFIL"},
+		{fil: "-0.000000001", expect: "-1 nFIL"},
+
+		{fil: "-0.0000000001", expect: "-100 pFIL"},
+		{fil: "-0.00000000001", expect: "-10 pFIL"},
+		{fil: "-0.000000000001", expect: "-1 pFIL"},
+
+		{fil: "-0.0000000000001", expect: "-100 fFIL"},
+		{fil: "-0.00000000000001", expect: "-10 fFIL"},
+		{fil: "-0.000000000000001", expect: "-1 fFIL"},
+
+		{fil: "-0.0000000000000001", expect: "-100 aFIL"},
+		{fil: "-0.00000000000000001", expect: "-10 aFIL"},
+		{fil: "-0.000000000000000001", expect: "-1 aFIL"},
+
+		{fil: "-0.0000012", expect: "-1.2 μFIL"},
+		{fil: "-0.00000123", expect: "-1.23 μFIL"},
+		{fil: "-0.000001234", expect: "-1.234 μFIL"},
+		{fil: "-0.0000012344", expect: "-1.234 μFIL"},
+		{fil: "-0.00000123444", expect: "-1.234 μFIL"},
+
+		{fil: "-0.0002212", expect: "-221.2 μFIL"},
+		{fil: "-0.00022123", expect: "-221.23 μFIL"},
+		{fil: "-0.000221234", expect: "-221.234 μFIL"},
+		{fil: "-0.0002212344", expect: "-221.234 μFIL"},
+		{fil: "-0.00022123444", expect: "-221.234 μFIL"},
 	} {
 		s := s
 		t.Run(s.fil, func(t *testing.T) {