Add version constant

.github/workflows/ci.yml

@@ -7,6 +7,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
     - uses: actions/setup-go@v1
       with:
         go-version: '1.13.10'
@@ -18,7 +20,7 @@ jobs:
           ${{ runner.os }}-go-
     - run: |
         make test
-        make tidy
+        make check-tidy
         make check-headers
   lint:
     runs-on: ubuntu-latest

Makefile

@@ -41,11 +41,13 @@ install-tools:
 lint:
 	golangci-lint run -v ./...
 
-# this ensures there is no unused dependency being added by accident
-.PHONY: tidy
-tidy:
-	go mod tidy; git diff --exit-code
-
 .PHONY: check-headers
 check-headers:
 	@./check-headers.sh
+
+.PHONY: check-tidy
+check-tidy:
+	go generate -v ./...
+	go mod tidy
+	cd languageserver; go mod tidy
+	git diff --exit-code

runtime/ast/access.go

@@ -24,7 +24,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=Access
+//go:generate go run golang.org/x/tools/cmd/stringer -type=Access
 
 type Access uint
 

runtime/ast/conditionkind.go

@@ -24,7 +24,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=ConditionKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=ConditionKind
 
 type ConditionKind uint
 

runtime/ast/operation.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=Operation
+//go:generate go run golang.org/x/tools/cmd/stringer -type=Operation
 
 type Operation uint
 

runtime/ast/transferoperation.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=TransferOperation
+//go:generate go run golang.org/x/tools/cmd/stringer -type=TransferOperation
 
 type TransferOperation uint
 

runtime/ast/variablekind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=VariableKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=VariableKind
 
 type VariableKind uint
 

runtime/cmd/execute/repl.go

@@ -26,6 +26,7 @@ import (
 	"github.com/c-bata/go-prompt"
 	"github.com/logrusorgru/aurora"
 
+	"github.com/onflow/cadence"
 	"github.com/onflow/cadence/runtime"
 	"github.com/onflow/cadence/runtime/cmd"
 	"github.com/onflow/cadence/runtime/interpreter"
@@ -144,7 +145,7 @@ func handleCommand(command string) {
 }
 
 func printWelcome() {
-	fmt.Printf("Welcome to Cadence!\n%s\n\n", assistanceMessage)
+	fmt.Printf("Welcome to Cadence %s!\n%s\n\n", cadence.Version, assistanceMessage)
 }
 
 func colorizeResult(value interpreter.Value) string {

runtime/common/compositekind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=CompositeKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=CompositeKind
 
 type CompositeKind uint
 

runtime/common/controlstatement.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=ControlStatement
+//go:generate go run golang.org/x/tools/cmd/stringer -type=ControlStatement
 
 type ControlStatement uint
 

runtime/common/declarationkind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=DeclarationKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=DeclarationKind
 
 type DeclarationKind uint
 

runtime/common/operandside.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=OperandSide
+//go:generate go run golang.org/x/tools/cmd/stringer -type=OperandSide
 
 type OperandSide uint
 

runtime/common/operationkind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=OperationKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=OperationKind
 
 type OperationKind uint
 

runtime/common/pathdomain.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=PathDomain
+//go:generate go run golang.org/x/tools/cmd/stringer -type=PathDomain
 
 type PathDomain uint
 

runtime/interpreter/primitivestatictype.go

@@ -23,7 +23,7 @@ import (
 	"github.com/onflow/cadence/runtime/sema"
 )
 
-//go:generate stringer -type=PrimitiveStaticType -trimprefix=PrimitiveStaticType
+//go:generate go run golang.org/x/tools/cmd/stringer -type=PrimitiveStaticType -trimprefix=PrimitiveStaticType
 
 // PrimitiveStaticType
 

runtime/parser2/integerliteralkind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=IntegerLiteralKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=IntegerLiteralKind
 
 type IntegerLiteralKind uint
 

runtime/parser2/invalidnumberliteralkind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=InvalidNumberLiteralKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=InvalidNumberLiteralKind
 
 type InvalidNumberLiteralKind uint
 

runtime/sema/accesscheckmode.go

@@ -18,7 +18,7 @@
 
 package sema
 
-//go:generate stringer -type=AccessCheckMode
+//go:generate go run golang.org/x/tools/cmd/stringer -type=AccessCheckMode
 
 type AccessCheckMode uint
 

runtime/sema/binaryoperationkind.go

@@ -23,7 +23,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=BinaryOperationKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=BinaryOperationKind
 
 type BinaryOperationKind uint
 

runtime/sema/containerkind.go

@@ -18,7 +18,7 @@
 
 package sema
 
-//go:generate stringer -type=ContainerKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=ContainerKind
 
 type ContainerKind uint
 

runtime/sema/resourceinvalidationkind.go

@@ -22,7 +22,7 @@ import (
 	"github.com/onflow/cadence/runtime/errors"
 )
 
-//go:generate stringer -type=ResourceInvalidationKind
+//go:generate go run golang.org/x/tools/cmd/stringer -type=ResourceInvalidationKind
 
 type ResourceInvalidationKind uint
 

runtime/sema/typeannotationstate.go

@@ -18,7 +18,7 @@
 
 package sema
 
-//go:generate stringer -type=TypeAnnotationState
+//go:generate go run golang.org/x/tools/cmd/stringer -type=TypeAnnotationState
 
 type TypeAnnotationState uint
 

utils/version/main.go

@@ -0,0 +1,82 @@
+/*
+ * Cadence - The resource-oriented smart contract programming language
+ *
+ * Copyright 2019-2020 Dapper Labs, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+const template string = `// Code generated by utils/version. DO NOT EDIT.
+/*
+ * Cadence - The resource-oriented smart contract programming language
+ *
+ * Copyright 2019-2020 Dapper Labs, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+%s
+
+package cadence
+
+const Version = "%s"
+`
+
+const goGenerateComment = "//go:generate go run ./utils/version generate"
+
+const target = "version.go"
+
+func main() {
+	version := getLastTag()
+
+	f, err := os.Create(target)
+	if err != nil {
+		panic(fmt.Errorf("could not create file %s: %w\n", target, err))
+	}
+	defer func() {
+		_ = f.Close()
+	}()
+
+	_, err = f.WriteString(fmt.Sprintf(template, goGenerateComment, version))
+	if err != nil {
+		panic(fmt.Errorf("could not write to %s: %w\n", target, err))
+	}
+}
+
+func getLastTag() string {
+	gitOutput, err := exec.Command("git", "describe", "--tags", "--match", `v*`, "--abbrev=0").Output()
+	if err != nil {
+		panic(fmt.Errorf("could not get last tag: %w", err))
+	}
+
+	return strings.TrimSpace(string(gitOutput))
+}