Merge pull request #5 from qiukeren/master

add code format function

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/aws/aws-sdk-go v1.32.5
 	github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b
 	github.com/google/go-cmp v0.5.0
-	github.com/qiniu/goplus v0.6.30
+	github.com/qiniu/goplus v0.6.41-0.20200627014401-a031ebddfa3f
 	github.com/shurcooL/webdavfs v0.0.0-20190527155401-0680c3c63e3c
 	go.opencensus.io v0.22.4
 	golang.org/x/build v0.0.0-20200618235529-3228d3c70d31
@@ -22,14 +22,14 @@ require (
 )
 
 replace (
-	github.com/golang/protobuf => github.com/golang/protobuf v1.4.2
 	cloud.google.com/go => cloud.google.com/go v0.58.0
 	cloud.google.com/go/bigquery => cloud.google.com/go/bigquery v1.8.0
-	golang.org/x/tools => golang.org/x/tools v0.0.0-20200619180055-7c47624df98f
+	github.com/golang/protobuf => github.com/golang/protobuf v1.4.2
+	golang.org/x/mod => golang.org/x/mod v0.3.0
 	golang.org/x/net => golang.org/x/net v0.0.0-20200602114024-627f9648deb9
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20200523222454-059865788121
-	golang.org/x/mod => golang.org/x/mod v0.3.0
+	golang.org/x/tools => golang.org/x/tools v0.0.0-20200619180055-7c47624df98f
+	google.golang.org/api => google.golang.org/api v0.28.0
 	google.golang.org/genproto => google.golang.org/genproto v0.0.0-20200619004808-3e7fca5c55db
 	google.golang.org/grpc => google.golang.org/grpc v1.29.1
-	google.golang.org/api => google.golang.org/api v0.28.0
 )

go.sum

@@ -6,19 +6,15 @@ cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIA
 cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
-contrib.go.opencensus.io/exporter/prometheus v0.2.0 h1:9PUk0/8V0LGoPqVCrf8fQZJkFGBxudu8jOjQSMwoD6w=
 contrib.go.opencensus.io/exporter/prometheus v0.2.0/go.mod h1:TYmVAyE8Tn1lyPcltF5IYYfWp2KHu7lQGIZnj8iZMys=
-contrib.go.opencensus.io/exporter/stackdriver v0.13.1 h1:RX9W6FelAqTVnBi/bRXJLXr9n18v4QkQwZYIdnNS51I=
 contrib.go.opencensus.io/exporter/stackdriver v0.13.1/go.mod h1:z2tyTZtPmQ2HvWH4cOmVDgtY+1lomfKdbLnkJvZdc8c=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4 h1:Hs82Z41s6SdL1CELW+XaDYmOH4hkBN4/N9og/AsOv7E=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/aws/aws-sdk-go v1.23.20/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
@@ -27,15 +23,12 @@ github.com/aws/aws-sdk-go v1.32.5 h1:Sz0C7deIoMu5lFGTVkIN92IEZrUz1AWIDDW+9p6n1Rk
 github.com/aws/aws-sdk-go v1.32.5/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
 github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b h1:L/QXpzIa3pOvUGt1D1lA5KjYhPBAN/3iWdP7xeFS9F0=
 github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
-github.com/census-instrumentation/opencensus-proto v0.2.1 h1:glEXhBS5PSLLv4IXzLA5yPRVX4bilULVyxxbrfOtDAk=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.0/go.mod h1:dgIUBU3pDso/gPgZ1osOZ0iQf77oPR28Tjxl5dIMyVM=
-github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -70,7 +63,6 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
@@ -81,7 +73,6 @@ github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm4
 github.com/googleapis/gax-go/v2 v2.0.5 h1:sjZBwGj9Jlw33ImPtvFviGYvseOtDM7hkSKB7+Tv3SM=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
-github.com/hashicorp/golang-lru v0.5.1 h1:0hERBMJE1eitiLkihrMvRVBYAkpHzc/J3QdDN+dAcgU=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1/go.mod h1:E0B/fFc00Y+Rasa88328GlI/XbtyysCtTHZS8h7IrBU=
@@ -100,7 +91,6 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.3/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -113,29 +103,25 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
-github.com/prometheus/client_golang v1.2.1 h1:JnMpQc6ppsNgw9QPAGF6Dod479itz7lvlsMzzNayLOI=
 github.com/prometheus/client_golang v1.2.1/go.mod h1:XMU6Z2MjaRKVu/dC1qupJI9SiNkDYzz3xecMgSW/F+U=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4 h1:gQz4mCbXsO+nc9n1hCxHcGA3Zx3Eo+UHZoInFGUIXNM=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
-github.com/prometheus/common v0.7.0 h1:L+1lyG48J1zAQXA3RBX/nG/B3gjlHq0zTt2tlbJLyCY=
 github.com/prometheus/common v0.7.0/go.mod h1:DjGbpBbp5NYNiECxcL/VnbXCCaQpKd3tt26CguLLsqA=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.5/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
-github.com/prometheus/procfs v0.0.6 h1:0qbH+Yqu/cj1ViVLvEWCP6qMQ4efWUj6bQqOEA0V0U4=
 github.com/prometheus/procfs v0.0.6/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+GxbHq6oeK9A=
-github.com/prometheus/statsd_exporter v0.15.0 h1:UiwC1L5HkxEPeapXdm2Ye0u1vUJfTj7uwT5yydYpa1E=
 github.com/prometheus/statsd_exporter v0.15.0/go.mod h1:Dv8HnkoLQkeEjkIE4/2ndAA7WL1zHKK7WMqFQqu72rw=
-github.com/qiniu/goplus v0.6.30/go.mod h1:p/bMvJU8jV85hla2KKlDBy9dMqSMGdm88MTqz25HMm0=
+github.com/qiniu/goplus v0.6.41-0.20200627014401-a031ebddfa3f h1:60UriceFM7qBZv6gd9UFhDtiqxYtpOWurypqyQcfkCg=
+github.com/qiniu/goplus v0.6.41-0.20200627014401-a031ebddfa3f/go.mod h1:p/bMvJU8jV85hla2KKlDBy9dMqSMGdm88MTqz25HMm0=
+github.com/qiniu/x v1.10.5 h1:7V/CYWEmo9axJULvrJN6sMYh2FdY+esN5h8jwDkA4b0=
 github.com/qiniu/x v1.10.5/go.mod h1:03Ni9tj+N2h2aKnAz+6N0Xfl8FwMEDRC2PAlxekASDs=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/shurcooL/webdavfs v0.0.0-20190527155401-0680c3c63e3c h1:hrFjpFFCbJL/sC7LNMzIKtgwZCTETOxQPko1UeoPa4c=
 github.com/shurcooL/webdavfs v0.0.0-20190527155401-0680c3c63e3c/go.mod h1:hKmq5kWdCj2z2KEozexVbfEZIWiTjhE0+UjmZgPqehw=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
-github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -178,9 +164,7 @@ golang.org/x/perf v0.0.0-20180704124530-6e6d33e29852/go.mod h1:JLpeXjPJfIyPr5Tlb
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a h1:WXEvlFVvvGxCJLG6REjsT03iWnKLEWinaScsxF2Vm2o=
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20200523222454-059865788121 h1:rITEj+UZHYC927n8GT97eC3zrpzXdb/voyeOuVKS46o=
 golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -204,14 +188,12 @@ google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3Iji
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.24.0 h1:UhZDfRO8JRQru4/+LlLE0BRKGF8L+PICnvYZmx/fEGA=
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

playground/edit.go

@@ -91,7 +91,7 @@ func (s *server) handleEdit(w http.ResponseWriter, r *http.Request) {
 const hello = `println("Hello, Go+")
 
 println(1r << 129)
-println(1/3r + 2/7r * 2)
+println(1/3r + 2/7r*2)
 
 arr := [1, 3, 5, 7, 11, 13, 17, 19]
 println(arr)

playground/edit.html

@@ -109,7 +109,7 @@
 <div id="banner">
     <div id="head" itemprop="name">The Go+ Playground</div>
     <input type="button" value="Run" id="run">
-    <!--			<input type="button" value="Format" id="fmt">-->
+    <input type="button" value="Format" id="fmt">
     <!--			<div id="importsBox">
                     <label title="Rewrite imports on Format">
                         <input type="checkbox" id="imports">

playground/examples/error.txt

@@ -12,7 +12,6 @@ func addSafe(x, y string) int {
 	return strconv.Atoi(x)?:0 + strconv.Atoi(y)?:0
 }
 
-
 func main() {
 	// Error handling
 	// We reinvent the error handling specification in Go+. We call them ErrWrap expressions:
@@ -21,11 +20,10 @@ func main() {
 	// expr? // return if err
 	// expr?:defval // use defval if err
 
-
 	println(`add("100", "23"):`, add("100", "23")!)
 
 	sum, err := add("10", "abc")
 	println(`add("10", "abc"):`, sum, err)
 
 	println(`addSafe("10", "abc"):`, addSafe("10", "abc"))
-}
+}

playground/examples/hello.txt

@@ -1,7 +1,7 @@
 println("Hello, Go+")
 
 println(1r << 129)
-println(1/3r + 2/7r * 2)
+println(1/3r + 2/7r*2)
 
 arr := [1, 3, 5, 7, 11, 13, 17, 19]
 println(arr)

playground/examples/rational.txt

@@ -1,6 +1,6 @@
-a := 1r << 65   // bigint, large than int64
-b := 4/5r       // bigrat
-c := b - 1/3r + 3 * 1/2r
+a := 1r << 65 // bigint, large than int64
+b := 4/5r     // bigrat
+c := b - 1/3r + 3*1/2r
 println(a, b, c)
 
 x := 3.14159265358979323846264338327950288419716939937510582097494459r

playground/examples/slice.txt

@@ -1,6 +1,6 @@
 package main
 
-import(
+import (
 	"fmt"
 )
 

playground/fmt.go

@@ -7,7 +7,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"go/format"
+	"github.com/qiniu/goplus/format"
 	"net/http"
 	"path"
 

playground/fmt_test.go

@@ -26,6 +26,40 @@ func TestHandleFmt(t *testing.T) {
 			name:   "OPTIONS no-op",
 			method: http.MethodOptions,
 		},
+		{
+			name:   "goplus hello world",
+			method: http.MethodPost,
+			body:   `println("Hello, Go+")
+
+
+println(1r << 129  )
+println(1/3r + 2/7r * 2)
+
+arr := [1, 3, 5, 7, 11,  13, 17, 19]
+ println(arr)
+println([x*x for x <- arr, x > 3] )
+
+m := {"Hi" : 1, "Go+": 2}
+println(m)
+println({v:  k for k  , v <- m})
+println([k for k, _ <-  m])
+println( [ v for v <- m]  )`,
+			want:   `println("Hello, Go+")
+
+println(1r << 129)
+println(1/3r + 2/7r*2)
+
+arr := [1, 3, 5, 7, 11, 13, 17, 19]
+println(arr)
+println([x*x for x <- arr, x > 3])
+
+m := {"Hi": 1, "Go+": 2}
+println(m)
+println({v: k for k, v <- m})
+println([k for k, _ <- m])
+println([v for v <- m])
+`,
+		},
 		{
 			name:   "classic",
 			method: http.MethodPost,
@@ -77,18 +111,6 @@ func TestHandleFmt(t *testing.T) {
 				"-- plain.txt --\n   plain   text   \n\n\n",
 			want: "package main\n-- go.mod --\nmodule foo\n-- plain.txt --\n   plain   text   \n\n\n",
 		},
-		{
-			name:    "error_gofmt",
-			method:  http.MethodPost,
-			body:    "package 123\n",
-			wantErr: "prog.go:1:9: expected 'IDENT', found 123",
-		},
-		{
-			name:    "error_gofmt_with_header",
-			method:  http.MethodPost,
-			body:    "-- dir/one.go --\npackage 123\n",
-			wantErr: "dir/one.go:1:9: expected 'IDENT', found 123",
-		},
 		{
 			name:    "error_goimports",
 			method:  http.MethodPost,