cmd/calc: implement arbitrary precision calculator

cmd/calc/calc.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/ripta/rt/pkg/calc"
+	"github.com/ripta/rt/pkg/version"
+)
+
+func main() {
+	cmd := calc.NewCommand()
+	cmd.AddCommand(version.NewCommand())
+
+	if err := cmd.Execute(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %+v\n", err)
+		os.Exit(1)
+	}
+}

go.mod

@@ -7,6 +7,7 @@ toolchain go1.24.1
 require (
 	github.com/BurntSushi/toml v1.5.0
 	github.com/containerd/console v1.0.5
+	github.com/elk-language/go-prompt v1.3.1
 	github.com/go-logfmt/logfmt v0.6.1
 	github.com/google/cel-go v0.26.1
 	github.com/gosuri/uilive v0.0.4
@@ -15,6 +16,7 @@ require (
 	github.com/mr-tron/base58 v1.2.0
 	github.com/r3labs/diff/v3 v3.0.2
 	github.com/ripta/hypercmd v0.5.0
+	github.com/ripta/reals v0.0.0-20251129121815-4fa2f223ded2
 	github.com/ripta/unihan v0.0.0-20250404091138-c307c698a880
 	github.com/spf13/cobra v1.10.1
 	github.com/spf13/pflag v1.0.10
@@ -23,6 +25,7 @@ require (
 	github.com/vmihailenco/msgpack/v5 v5.4.1
 	github.com/zclconf/go-cty v1.17.0
 	golang.org/x/crypto v0.45.0
+	golang.org/x/term v0.37.0
 	golang.org/x/text v0.31.0
 	golang.org/x/time v0.14.0
 	google.golang.org/protobuf v1.36.10
@@ -40,9 +43,14 @@ require (
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mattn/go-tty v0.0.7 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
+	github.com/pkg/term v1.2.0-beta.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/stoewer/go-strcase v1.3.1 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
 	golang.org/x/exp v0.0.0-20250911091902-df9299821621 // indirect

go.sum

@@ -14,6 +14,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6N
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/elk-language/go-prompt v1.3.1 h1:p6CJNCKcPUwUB4vkIvlqQNzW7ScrBHHKfMdFyeoESbc=
+github.com/elk-language/go-prompt v1.3.1/go.mod h1:u66CVjp31ldgU/Ok1q8fA2RUmy/a9ysdMj5IZckFWKg=
 github.com/go-logfmt/logfmt v0.6.1 h1:4hvbpePJKnIzH1B+8OR/JPbTx37NktoI9LE2QZBBkvE=
 github.com/go-logfmt/logfmt v0.6.1/go.mod h1:EV2pOAQoZaT1ZXZbqDl5hrymndi4SY9ED9/z6CO0XAk=
 github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
@@ -39,8 +41,14 @@ github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzh
 github.com/klauspost/cpuid/v2 v2.3.0/go.mod h1:hqwkgyIinND0mEev00jJYCxPNVRVXFQeu1XKlok6oO0=
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de h1:9TO3cAIGXtEhnIaL+V+BEER86oLrvS+kWobKpbJuye0=
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de/go.mod h1:zAbeS9B/r2mtpb6U+EI2rYA5OAXxsYw6wTamcNW+zcE=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
+github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
+github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mattn/go-tty v0.0.7 h1:KJ486B6qI8+wBO7kQxYgmmEFDaFEE96JMBQ7h400N8Q=
+github.com/mattn/go-tty v0.0.7/go.mod h1:f2i5ZOvXBU/tCABmLmOfzLz9azMo5wdAaElRNnJKr+k=
 github.com/mitchellh/go-wordwrap v1.0.1 h1:TLuKupo69TCn6TQSyGxwI1EblZZEsQ0vMlAFQflz0v0=
 github.com/mitchellh/go-wordwrap v1.0.1/go.mod h1:R62XHJLzvMFRBbcrT7m7WgmE1eOyTSsCt+hzestvNj0=
 github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
@@ -49,14 +57,21 @@ github.com/onsi/ginkgo/v2 v2.22.2 h1:/3X8Panh8/WwhU/3Ssa6rCKqPLuAkVY2I0RoyDLySlU
 github.com/onsi/ginkgo/v2 v2.22.2/go.mod h1:oeMosUL+8LtarXBHu/c0bx2D/K9zyQ6uX3cTyztHwsk=
 github.com/onsi/gomega v1.36.2 h1:koNYke6TVk6ZmnyHrCXba/T/MoLBXFjeC1PtvYgw0A8=
 github.com/onsi/gomega v1.36.2/go.mod h1:DdwyADRjrc825LhMEkD76cHR5+pUnjhUN8GlHlRPHzY=
+github.com/pkg/term v1.2.0-beta.2 h1:L3y/h2jkuBVFdWiJvNfYfKmzcCnILw7mJWm2JQuMppw=
+github.com/pkg/term v1.2.0-beta.2/go.mod h1:E25nymQcrSllhX42Ok8MRm1+hyBdHY0dCeiKZ9jpNGw=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/r3labs/diff/v3 v3.0.2 h1:yVuxAY1V6MeM4+HNur92xkS39kB/N+cFi2hMkY06BbA=
 github.com/r3labs/diff/v3 v3.0.2/go.mod h1:Cy542hv0BAEmhDYWtGxXRQ4kqRsVIcEjG9gChUlTmkw=
 github.com/ripta/hypercmd v0.5.0 h1:8wEZndeP/umK8xLgZD1aYOIsdWsxymweJSETnbF1Awo=
 github.com/ripta/hypercmd v0.5.0/go.mod h1:nffU7nnFN8yU/PIHbN35UCE5q0FSnDJ6ev45SFEIZ48=
+github.com/ripta/reals v0.0.0-20251129121815-4fa2f223ded2 h1:QWeZ/uw8S951/qJQzg+wBAOpFhUx7yVJxyPRZdjJmuI=
+github.com/ripta/reals v0.0.0-20251129121815-4fa2f223ded2/go.mod h1:WErCt40puDDQdpVq8Hg1DzjB0svufA8WboSYG4BI2+E=
 github.com/ripta/unihan v0.0.0-20250404091138-c307c698a880 h1:ZzDUYlZP/LHJmkh+PtgRZHEKa+eNVefq6YR8BnUCQ2I=
 github.com/ripta/unihan v0.0.0-20250404091138-c307c698a880/go.mod h1:ZLBfCas48lym/27GOsyFjRo7OGejoGHzOTdUdoRtDqU=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
@@ -97,10 +112,13 @@ golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
 golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
 golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
 golang.org/x/sync v0.18.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
 golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/term v0.37.0 h1:8EGAD0qCmHYZg6J17DvsMy9/wJ7/D/4pV/wfnld5lTU=
+golang.org/x/term v0.37.0/go.mod h1:5pB4lxRNYYVZuTLmy8oR2BH8dflOR+IbTYFD8fi3254=
 golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
 golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
 golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=