289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
165 lines
3.3 KiB
Go
165 lines
3.3 KiB
Go
// Package file encapsulates the file abstractions used by the ast & parser.
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//
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package file
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import (
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"fmt"
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"strings"
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"gopkg.in/sourcemap.v1"
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)
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// Idx is a compact encoding of a source position within a file set.
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// It can be converted into a Position for a more convenient, but much
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// larger, representation.
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type Idx int
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// Position describes an arbitrary source position
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// including the filename, line, and column location.
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type Position struct {
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Filename string // The filename where the error occurred, if any
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Offset int // The src offset
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Line int // The line number, starting at 1
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Column int // The column number, starting at 1 (The character count)
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}
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// A Position is valid if the line number is > 0.
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func (self *Position) isValid() bool {
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return self.Line > 0
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}
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// String returns a string in one of several forms:
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//
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// file:line:column A valid position with filename
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// line:column A valid position without filename
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// file An invalid position with filename
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// - An invalid position without filename
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//
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func (self *Position) String() string {
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str := self.Filename
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if self.isValid() {
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if str != "" {
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str += ":"
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}
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str += fmt.Sprintf("%d:%d", self.Line, self.Column)
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}
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if str == "" {
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str = "-"
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}
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return str
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}
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// FileSet
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// A FileSet represents a set of source files.
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type FileSet struct {
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files []*File
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last *File
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}
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// AddFile adds a new file with the given filename and src.
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//
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// This an internal method, but exported for cross-package use.
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func (self *FileSet) AddFile(filename, src string) int {
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base := self.nextBase()
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file := &File{
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name: filename,
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src: src,
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base: base,
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}
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self.files = append(self.files, file)
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self.last = file
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return base
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}
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func (self *FileSet) nextBase() int {
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if self.last == nil {
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return 1
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}
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return self.last.base + len(self.last.src) + 1
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}
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func (self *FileSet) File(idx Idx) *File {
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for _, file := range self.files {
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if idx <= Idx(file.base+len(file.src)) {
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return file
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}
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}
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return nil
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}
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// Position converts an Idx in the FileSet into a Position.
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func (self *FileSet) Position(idx Idx) *Position {
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for _, file := range self.files {
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if idx <= Idx(file.base+len(file.src)) {
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return file.Position(idx - Idx(file.base))
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}
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}
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return nil
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}
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type File struct {
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name string
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src string
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base int // This will always be 1 or greater
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sm *sourcemap.Consumer
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}
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func NewFile(filename, src string, base int) *File {
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return &File{
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name: filename,
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src: src,
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base: base,
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}
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}
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func (fl *File) WithSourceMap(sm *sourcemap.Consumer) *File {
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fl.sm = sm
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return fl
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}
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func (fl *File) Name() string {
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return fl.name
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}
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func (fl *File) Source() string {
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return fl.src
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}
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func (fl *File) Base() int {
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return fl.base
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}
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func (fl *File) Position(idx Idx) *Position {
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position := &Position{}
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offset := int(idx) - fl.base
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if offset >= len(fl.src) || offset < 0 {
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return nil
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}
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src := fl.src[:offset]
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position.Filename = fl.name
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position.Offset = offset
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position.Line = strings.Count(src, "\n") + 1
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if index := strings.LastIndex(src, "\n"); index >= 0 {
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position.Column = offset - index
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} else {
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position.Column = len(src) + 1
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}
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if fl.sm != nil {
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if f, _, l, c, ok := fl.sm.Source(position.Line, position.Column); ok {
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position.Filename, position.Line, position.Column = f, l, c
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}
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}
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return position
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}
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