drop v1 support and don't bind to libuast; use v2 xpath

Signed-off-by: Denys Smirnov <denys@sourced.tech>

.appveyor.yml

@@ -2,7 +2,7 @@ version: "{build}"
 platform: x64
 image: Visual Studio 2017
 
-clone_folder: c:\gopath\src\gopkg.in\bblfsh\client-go.v2
+clone_folder: c:\gopath\src\gopkg.in\bblfsh\client-go.v3
 
 environment:
   GOPATH: c:\gopath

.travis.yml

@@ -1,20 +1,15 @@
 language: go
-go_import_path: gopkg.in/bblfsh/client-go.v2
+go_import_path: gopkg.in/bblfsh/client-go.v3
 
 env:
   - BBLFSHD_VERSION=v2.6.1 BBLFSH_PYTHON_VERSION=v2.2.1
 install:
   - |
     if [[ $TRAVIS_OS_NAME = linux ]]; then
-      sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
-      sudo -E apt-get -yq update
-      sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install gcc-6 g++-6
-      sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 90
-      sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 90
       docker run --privileged -d -p 9432:9432 --name bblfshd bblfsh/bblfshd:$BBLFSHD_VERSION
       docker exec bblfshd bblfshctl driver install bblfsh/python-driver:$BBLFSH_PYTHON_VERSION
     fi
-  - make dependencies
+  - go get -v -t ./...
 
 script:
   - |

Gopkg.toml

@@ -13,10 +13,6 @@
   name = "google.golang.org/grpc"
   version = "1.14.x"
 
-[[constraint]]
-  name = "gopkg.in/bblfsh/sdk.v1"
-  version = "1.16.x"
-
 [[constraint]]
   name = "gopkg.in/bblfsh/sdk.v2"
   version = "2.2.x"

Makefile

@@ -1,8 +1,5 @@
 # Package configuration
 PROJECT = client-go
-LIBUAST_VERSION ?= 2.0.1
-
-TOOLS_FOLDER = tools
 
 # Including ci Makefile
 CI_REPOSITORY ?= https://github.com/src-d/ci.git
@@ -12,57 +9,3 @@ MAKEFILE := $(CI_PATH)/Makefile.main
 $(MAKEFILE):
 	git clone --quiet --depth 1 -b $(CI_BRANCH) $(CI_REPOSITORY) $(CI_PATH)
 -include $(MAKEFILE)
-
-clean: clean-libuast
-clean-libuast:
-	find ./  -regex '.*\.[h,c]c?' ! -name 'bindings.h' -exec rm -f {} +
-
-ifeq ($(OS),Windows_NT)
-GOOS := windows
-else
-GOOS := $(shell uname -s | tr '[:upper:]' '[:lower:]')
-endif
-
-# 'Makefile::cgo-dependencies' target must be run before 'Makefile.main::dependencies' or 'go-get' will fail
-dependencies: cgo-dependencies
-	go get -v -t ./...
-.PHONY: dependencies cgo-dependencies
-
-ifeq ($(GOOS),windows)
-cgo-dependencies:
-	$(MAKE) clean-libuast && \
-	cd $(TOOLS_FOLDER) && \
-	curl -SLko archiver.exe https://github.com/mholt/archiver/releases/download/v2.0/archiver_windows_amd64.exe && \
-	curl -SLko binaries.win64.mingw.zip https://github.com/bblfsh/libuast/releases/download/v$(LIBUAST_VERSION)/binaries.win64.mingw.zip && \
-	./archiver.exe open binaries.win64.mingw.zip && \
-	rm binaries.win64.mingw.zip && \
-	rm archiver.exe && \
-	echo done
-else
-ifeq ($(GOOS),darwin)
-cgo-dependencies: unix-dependencies
-else
-cgo-dependencies: | check-gcc unix-dependencies
-endif
-endif
-.PHONY: cgo-dependencies
-
-check-gcc:
-	@if \
-		[[ -z `which gcc` ]] || \
-		[[ -z `which g++` ]] || \
-		[[ 5 -gt `gcc -dumpversion | sed 's/^[^0-9]*\([0-9][0-9]*\).*/\1/g'` ]] || \
-		[[ 5 -gt `g++ -dumpversion | sed 's/^[^0-9]*\([0-9][0-9]*\).*/\1/g'` ]]; \
-	then \
-		echo -e "error; GCC and G++ v5 or greater are required \n"; \
-		echo -e "- GCC: `gcc --version` \n"; \
-		echo -e "- G++: `g++ --version` \n"; \
-		exit 1; \
-	fi;
-.PHONY: check-gcc
-
-unix-dependencies:
-	curl -SL https://github.com/bblfsh/libuast/archive/v$(LIBUAST_VERSION).tar.gz | tar xz
-	mv libuast-$(LIBUAST_VERSION)/src/* $(TOOLS_FOLDER)/.
-	rm -rf libuast-$(LIBUAST_VERSION)
-.PHONY: unix-dependencies

README.md

@@ -1,4 +1,4 @@
-# client-go [![GoDoc](https://godoc.org/gopkg.in/bblfsh/client-go.v2?status.svg)](https://godoc.org/gopkg.in/bblfsh/client-go.v2) [![Build Status](https://travis-ci.org/bblfsh/client-go.svg?branch=master)](https://travis-ci.org/bblfsh/client-go) [![Build status](https://ci.appveyor.com/api/projects/status/github/bblfsh/client-go?svg=true)](https://ci.appveyor.com/project/mcuadros/client-go) [![codecov](https://codecov.io/gh/bblfsh/client-go/branch/master/graph/badge.svg)](https://codecov.io/gh/bblfsh/client-go)
+# client-go [![GoDoc](https://godoc.org/gopkg.in/bblfsh/client-go.v3?status.svg)](https://godoc.org/gopkg.in/bblfsh/client-go.v3) [![Build Status](https://travis-ci.org/bblfsh/client-go.svg?branch=master)](https://travis-ci.org/bblfsh/client-go) [![Build status](https://ci.appveyor.com/api/projects/status/github/bblfsh/client-go?svg=true)](https://ci.appveyor.com/project/mcuadros/client-go) [![codecov](https://codecov.io/gh/bblfsh/client-go/branch/master/graph/badge.svg)](https://codecov.io/gh/bblfsh/client-go)
 
 [Babelfish](https://doc.bblf.sh) Go client library provides functionality to both
 connecting to the Babelfish server for parsing code
@@ -10,12 +10,9 @@ and for analysing UASTs with the functionality provided by [libuast](https://git
 The recommended way to install *client-go* is:
 
 ```sh
-go get -u gopkg.in/bblfsh/client-go.v2/...
+go get -u gopkg.in/bblfsh/client-go.v3/...
 ```
 
-Windows build is supported, provided by you have `make` and `curl` in your `%PATH%`.
-It is also possible to link against custom `libuast` on Windows, read [WINDOWS.md](WINDOWS.md).
-
 ## Example
 
 This small example illustrates how to retrieve the [UAST](https://doc.bblf.sh/uast/specification.html) from a small Python script.
@@ -32,12 +29,12 @@ if err != nil {
 
 python := "import foo"
 
-res, err := client.NewParseRequest().Language("python").Content(python).Do()
+res, _, err := client.NewParseRequest().Language("python").Content(python).UAST()
 if err != nil {
     panic(err)
 }
 
-query := "//*[@roleImport]"
+query := "//*[@role='Import']"
 nodes, _ := tools.Filter(res.UAST, query)
 for _, n := range nodes {
     fmt.Println(n)
@@ -80,16 +77,15 @@ iter, err := tools.NewIterator(res.UAST)
 if err != nil {
     panic(err)
 }
-defer iter.Dispose()
 
-for node := range iter.Iterate() {
+for node := range tools.Iterate(iter) {
     fmt.Println(node)
 }
 
 // For XPath expressions returning a boolean/numeric/string value, you must
 // use the right typed Filter function:
 
-boolres, err := FilterBool(res.UAST, "boolean(//*[@strtOffset or @endOffset])")
+boolres, err := FilterBool(res.UAST, "boolean(//*[@start-offset or @end-offset])")
 strres, err := FilterString(res.UAST, "name(//*[1])")
 numres, err := FilterNumber(res.UAST, "count(//*)")
 ```

client.go

@@ -47,27 +47,17 @@ func NewClientWithConnection(conn *grpc.ClientConn) (*Client, error) {
 	}, nil
 }
 
-// NewParseRequestV2 is a parsing request to get the UAST.
-func (c *Client) NewParseRequestV2() *ParseRequestV2 {
-	return &ParseRequestV2{client: c}
-}
-
 // NewParseRequest is a parsing request to get the UAST.
 func (c *Client) NewParseRequest() *ParseRequest {
-	return &ParseRequest{client: c}
-}
-
-// NewNativeParseRequest is a parsing request to get the AST.
-func (c *Client) NewNativeParseRequest() *NativeParseRequest {
-	return &NativeParseRequest{client: c}
+	return &ParseRequest{ctx: context.Background(), client: c}
 }
 
 // NewVersionRequest is a parsing request to get the version of the server.
 func (c *Client) NewVersionRequest() *VersionRequest {
-	return &VersionRequest{client: c}
+	return &VersionRequest{ctx: context.Background(), client: c}
 }
 
 // NewSupportedLanguagesRequest is a parsing request to get the supported languages.
 func (c *Client) NewSupportedLanguagesRequest() *SupportedLanguagesRequest {
-	return &SupportedLanguagesRequest{client: c}
+	return &SupportedLanguagesRequest{ctx: context.Background(), client: c}
 }

client_test.go

@@ -29,7 +29,6 @@ var clientTests = []struct {
 	{name: "ParseRequest", test: testParseRequest},
 	{name: "ParseRequestMode", test: testParseRequestMode},
 	{name: "NativeParseRequest", test: testNativeParseRequest},
-	{name: "ParseRequestV2", test: testParseRequestV2},
 	{name: "VersionRequest", test: testVersionRequest},
 	{name: "SupportedLanguagesRequest", test: testSupportedLanguagesRequest},
 }
@@ -49,52 +48,40 @@ func testParseRequest(t *testing.T, cli *Client) {
 	require.NoError(t, err)
 
 	require.Equal(t, 0, len(res.Errors))
-	require.NotNil(t, res.UAST)
+	require.NotNil(t, res)
 }
 
 func testParseRequestMode(t *testing.T, cli *Client) {
 	res, err := cli.NewParseRequest().Language("python").Content("import foo").Mode(Semantic).Do()
 	require.NoError(t, err)
 
 	require.Equal(t, 0, len(res.Errors))
-	require.NotNil(t, res.UAST)
+	require.NotNil(t, res)
 
 	res, err = cli.NewParseRequest().Language("python").Content("import foo").Mode(Annotated).Do()
 	require.NoError(t, err)
 
 	require.Equal(t, 0, len(res.Errors))
-	require.NotNil(t, res.UAST)
-	t.Log(res.UAST)
+	require.NotNil(t, res)
+	t.Log(res)
 }
 
 func testNativeParseRequest(t *testing.T, cli *Client) {
-	res, err := cli.NewNativeParseRequest().Language("python").Content("import foo").Do()
+	res, err := cli.NewParseRequest().Mode(Native).Language("python").Content("import foo").Do()
 	require.NoError(t, err)
 
 	require.Equal(t, 0, len(res.Errors))
-	require.NotNil(t, res.AST)
-}
-
-func testParseRequestV2(t *testing.T, cli *Client) {
-	res, lang, err := cli.NewParseRequestV2().Language("python").Content("import foo").UAST()
-	require.NoError(t, err)
-
-	require.Equal(t, "python", lang)
 	require.NotNil(t, res)
 }
 
 func testVersionRequest(t *testing.T, cli *Client) {
 	res, err := cli.NewVersionRequest().Do()
 	require.NoError(t, err)
-
-	require.Equal(t, 0, len(res.Errors))
 	require.NotNil(t, res.Version)
 }
 
 func testSupportedLanguagesRequest(t *testing.T, cli *Client) {
 	res, err := cli.NewSupportedLanguagesRequest().Do()
 	require.NoError(t, err)
-
-	require.Equal(t, 0, len(res.Errors))
-	require.NotEmpty(t, res.Languages)
+	require.NotEmpty(t, res)
 }