forked from cerc-io/plugeth
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.
120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package otto
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import (
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"bytes"
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"encoding/gob"
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"errors"
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)
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var ErrVersion = errors.New("version mismatch")
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var scriptVersion = "2014-04-13/1"
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// Script is a handle for some (reusable) JavaScript.
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// Passing a Script value to a run method will evaluate the JavaScript.
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//
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type Script struct {
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version string
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program *_nodeProgram
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filename string
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src string
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}
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// Compile will parse the given source and return a Script value or nil and
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// an error if there was a problem during compilation.
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//
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// script, err := vm.Compile("", `var abc; if (!abc) abc = 0; abc += 2; abc;`)
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// vm.Run(script)
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//
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func (self *Otto) Compile(filename string, src interface{}) (*Script, error) {
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return self.CompileWithSourceMap(filename, src, nil)
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}
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// CompileWithSourceMap does the same thing as Compile, but with the obvious
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// difference of applying a source map.
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func (self *Otto) CompileWithSourceMap(filename string, src, sm interface{}) (*Script, error) {
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program, err := self.runtime.parse(filename, src, sm)
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if err != nil {
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return nil, err
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}
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cmpl_program := cmpl_parse(program)
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script := &Script{
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version: scriptVersion,
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program: cmpl_program,
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filename: filename,
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src: program.File.Source(),
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}
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return script, nil
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}
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func (self *Script) String() string {
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return "// " + self.filename + "\n" + self.src
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}
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// MarshalBinary will marshal a script into a binary form. A marshalled script
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// that is later unmarshalled can be executed on the same version of the otto runtime.
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//
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// The binary format can change at any time and should be considered unspecified and opaque.
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//
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func (self *Script) marshalBinary() ([]byte, error) {
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var bfr bytes.Buffer
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encoder := gob.NewEncoder(&bfr)
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err := encoder.Encode(self.version)
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if err != nil {
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return nil, err
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}
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err = encoder.Encode(self.program)
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if err != nil {
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return nil, err
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}
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err = encoder.Encode(self.filename)
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if err != nil {
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return nil, err
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}
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err = encoder.Encode(self.src)
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if err != nil {
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return nil, err
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}
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return bfr.Bytes(), nil
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}
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// UnmarshalBinary will vivify a marshalled script into something usable. If the script was
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// originally marshalled on a different version of the otto runtime, then this method
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// will return an error.
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//
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// The binary format can change at any time and should be considered unspecified and opaque.
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//
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func (self *Script) unmarshalBinary(data []byte) error {
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decoder := gob.NewDecoder(bytes.NewReader(data))
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err := decoder.Decode(&self.version)
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if err != nil {
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goto error
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}
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if self.version != scriptVersion {
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err = ErrVersion
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goto error
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}
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err = decoder.Decode(&self.program)
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if err != nil {
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goto error
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}
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err = decoder.Decode(&self.filename)
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if err != nil {
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goto error
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}
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err = decoder.Decode(&self.src)
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if err != nil {
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goto error
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}
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return nil
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error:
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self.version = ""
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self.program = nil
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self.filename = ""
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self.src = ""
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return err
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}
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