schemas/cleanup: replace vsfsgen w/ Go stdlib's embed (hashicorp#1070)

Author: radeksimko

Diff for: go.mod

@@ -25,7 +25,6 @@ require (
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/otiai10/copy v1.7.0
 	github.com/pmezard/go-difflib v1.0.0
-	github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546
 	github.com/stretchr/testify v1.8.0
 	github.com/vektra/mockery/v2 v2.14.0
 	github.com/zclconf/go-cty v1.11.0
@@ -76,7 +75,6 @@ require (
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/rs/zerolog v1.27.0 // indirect
 	github.com/shopspring/decimal v1.2.0 // indirect
-	github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 // indirect
 	github.com/sourcegraph/run v0.9.0 // indirect
 	github.com/spf13/afero v1.8.2 // indirect
 	github.com/spf13/cast v1.5.0 // indirect

Diff for: go.sum

@@ -339,10 +339,6 @@ github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNX
 github.com/sergi/go-diff v1.2.0 h1:XU+rvMAioB0UC3q1MFrIQy4Vo5/4VsRDQQXHsEya6xQ=
 github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
 github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
-github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 h1:bUGsEnyNbVPw06Bs80sCeARAlK8lhwqGyi6UT8ymuGk=
-github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
-github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546 h1:pXY9qYc/MP5zdvqWEUH6SjNiu7VhSjuVFTFiTcphaLU=
-github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546/go.mod h1:TrYk7fJVaAttu97ZZKrO9UbRa8izdowaMIZcxYMbVaw=
 github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
 github.com/sourcegraph/run v0.9.0 h1:mj4pwBqCB+5qEaTp+rhauh5ubYI8n/icOkeiLTCT9Xg=
 github.com/sourcegraph/run v0.9.0/go.mod h1:j6Do38ccF+w/rSWgOuu4Ou/eOIDiU6pC87BZmq0DXDY=

Diff for: internal/schemas/gen/gen.go

@@ -24,7 +24,6 @@ import (
 	"github.com/hashicorp/hc-install/src"
 	"github.com/hashicorp/terraform-exec/tfexec"
 	"github.com/hashicorp/terraform-ls/internal/schemas"
-	"github.com/shurcooL/vfsgen"
 )
 
 const terraformBlock = `terraform {
@@ -138,7 +137,6 @@ func gen() error {
 	if err != nil {
 		return err
 	}
-	fs := http.Dir("data")
 
 	coreVersion, providerVersions, err := tf.Version(ctx, true)
 	if err != nil {
@@ -175,17 +173,7 @@ func gen() error {
 	}
 
 	log.Println("writing schemas to file")
-	err = json.NewEncoder(schemasFile).Encode(ps)
-	if err != nil {
-		return err
-	}
-
-	log.Println("generating embedded go file")
-	return vfsgen.Generate(fs, vfsgen.Options{
-		Filename:     "schemas_gen.go",
-		PackageName:  "schemas",
-		VariableName: "files",
-	})
+	return json.NewEncoder(schemasFile).Encode(ps)
 }
 
 func stringifyProviderVersions(m map[string]*version.Version) map[string]string {

Diff for: internal/schemas/schemas_preloadschema.go

@@ -4,13 +4,20 @@
 package schemas
 
 import (
+	_ "embed"
 	"encoding/json"
 	"sync"
 
 	"github.com/hashicorp/go-version"
 	tfjson "github.com/hashicorp/terraform-json"
 )
 
+//go:embed data/schemas.json
+var schemasJsonBytes []byte
+
+//go:embed data/versions.json
+var versionsJsonBytes []byte
+
 var (
 	_preloadedProviderSchemas     *tfjson.ProviderSchemas
 	_preloadedVersionOutput       VersionOutput
@@ -20,23 +27,11 @@ var (
 
 func PreloadedProviderSchemas() (*tfjson.ProviderSchemas, VersionOutput, error) {
 	_preloadedProviderSchemasOnce.Do(func() {
-		schemasFile, fErr := files.Open("schemas.json")
-		if fErr != nil {
-			_preloadedProviderSchemasErr = fErr
-			return
-		}
-
 		_preloadedProviderSchemas = &tfjson.ProviderSchemas{}
-		_preloadedProviderSchemasErr = json.NewDecoder(schemasFile).Decode(_preloadedProviderSchemas)
-
-		versionFile, fErr := files.Open("versions.json")
-		if fErr != nil {
-			_preloadedProviderSchemasErr = fErr
-			return
-		}
+		_preloadedProviderSchemasErr = json.Unmarshal(schemasJsonBytes, _preloadedProviderSchemas)
 
 		output := &RawVersionOutput{}
-		err := json.NewDecoder(versionFile).Decode(output)
+		err := json.Unmarshal(versionsJsonBytes, output)
 		if err != nil {
 			_preloadedProviderSchemasErr = err
 			return