all: use external gogrep, remove internal/gogrep (#319)

Also: remove annoying codecov. We'll use something else.

Fixes #318

.github/workflows/go.yml

@@ -17,11 +17,6 @@
         {name: "Linter", run: "make lint"},
         {name: "Test", run: "make test"},
         {name: "Test release", run: "make test-release"},
-        {
-          name: "Upload coverage",
-          uses: "codecov/codecov-action@v1",
-          "with": {token: "${{secrets.CODECOV_TOKEN}}", file: "./coverage.txt", fail_ci_if_error: false},
-        },
       ],
     },
   },

README.md

@@ -4,7 +4,6 @@
 ![Build Status](https://github.com/quasilyte/go-ruleguard/workflows/Merge/badge.svg)
 [![PkgGoDev](https://pkg.go.dev/badge/mod/github.com/quasilyte/go-ruleguard)](https://pkg.go.dev/mod/github.com/quasilyte/go-ruleguard)
 [![Go Report Card](https://goreportcard.com/badge/github.com/quasilyte/go-ruleguard)](https://goreportcard.com/report/github.com/quasilyte/go-ruleguard)
-![Code Coverage](https://codecov.io/gh/quasilyte/go-ruleguard/branch/master/graph/badge.svg)
 
 ![Logo](_docs/logo2.png)
 

go.mod

@@ -4,9 +4,9 @@ go 1.15
 
 require (
 	github.com/go-toolsmith/astcopy v1.0.0
-	github.com/go-toolsmith/astequal v1.0.1
-	github.com/google/go-cmp v0.5.2
+	github.com/google/go-cmp v0.5.6
 	github.com/quasilyte/go-ruleguard/dsl v0.3.10
 	github.com/quasilyte/go-ruleguard/rules v0.0.0-20211022131956-028d6511ab71
+	github.com/quasilyte/gogrep v0.0.0-20211222143908-ba25d0f7d6bf
 	golang.org/x/tools v0.0.0-20201230224404-63754364767c
 )

go.sum

@@ -5,15 +5,18 @@ github.com/go-toolsmith/astequal v1.0.1 h1:JbSszi42Jiqu36Gnf363HWS9MTEAz67vTQLpo
 github.com/go-toolsmith/astequal v1.0.1/go.mod h1:4oGA3EZXTVItV/ipGiOx7NWkY5veFfcsOJVS2YxltLw=
 github.com/go-toolsmith/strparse v1.0.0 h1:Vcw78DnpCAKlM20kSbAyO4mPfJn/lyYA4BJUDxe2Jb4=
 github.com/go-toolsmith/strparse v1.0.0/go.mod h1:YI2nUKP9YGZnL/L1/DLFBfixrcjslWct4wyljWhSRy8=
-github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
+github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/quasilyte/go-ruleguard v0.3.1-0.20210203134552-1b5a410e1cc8/go.mod h1:KsAh3x0e7Fkpgs+Q9pNLS5XpFSvYCEVl5gP9Pp1xp30=
 github.com/quasilyte/go-ruleguard/dsl v0.3.0/go.mod h1:KeCP03KrjuSO0H1kTuZQCWlQPulDV6YMIXmpQss17rU=
 github.com/quasilyte/go-ruleguard/dsl v0.3.10 h1:4tVlVVcBT+nNWoF+t/zrAMO13sHAqYotX1K12Gc8f8A=
 github.com/quasilyte/go-ruleguard/dsl v0.3.10/go.mod h1:KeCP03KrjuSO0H1kTuZQCWlQPulDV6YMIXmpQss17rU=
 github.com/quasilyte/go-ruleguard/rules v0.0.0-20201231183845-9e62ed36efe1/go.mod h1:7JTjp89EGyU1d6XfBiXihJNG37wB2VRkd125Q1u7Plc=
 github.com/quasilyte/go-ruleguard/rules v0.0.0-20211022131956-028d6511ab71 h1:CNooiryw5aisadVfzneSZPswRWvnVW8hF1bS/vo8ReI=
 github.com/quasilyte/go-ruleguard/rules v0.0.0-20211022131956-028d6511ab71/go.mod h1:4cgAphtvu7Ftv7vOT2ZOYhC6CvBxZixcasr8qIOTA50=
+github.com/quasilyte/gogrep v0.0.0-20211222143908-ba25d0f7d6bf h1:qDEThQwGIJN/ynrZdLgg4K8EwDRN7cFtRTJlxYtR7AY=
+github.com/quasilyte/gogrep v0.0.0-20211222143908-ba25d0f7d6bf/go.mod h1:4t4AtVhIG+MC/9AZyzpdbEp0qn3LRMcJgsAa6BsGF+k=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=