108 lines
2.6 KiB
Go
108 lines
2.6 KiB
Go
/*
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* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package goldsmith
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import (
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"os"
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"runtime"
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"sync"
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)
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type context struct {
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gs *goldsmith
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input, output chan *file
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}
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func newContext(gs *goldsmith) *context {
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ctx := &context{gs: gs, output: make(chan *file)}
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if len(gs.contexts) > 0 {
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ctx.input = gs.contexts[len(gs.contexts)-1].output
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}
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gs.contexts = append(gs.contexts, ctx)
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return ctx
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}
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func (ctx *context) chain(p Plugin) {
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defer close(ctx.output)
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init, _ := p.(Initializer)
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accept, _ := p.(Accepter)
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proc, _ := p.(Processor)
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fin, _ := p.(Finalizer)
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if init != nil {
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if err := init.Initialize(ctx); err != nil {
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ctx.gs.fault(nil, err)
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return
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}
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}
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var wg sync.WaitGroup
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for i := 0; i < runtime.NumCPU(); i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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for f := range ctx.input {
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if proc == nil || accept != nil && !accept.Accept(ctx, f) {
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ctx.output <- f
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} else {
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if _, err := f.Seek(0, os.SEEK_SET); err != nil {
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ctx.gs.fault(f, err)
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}
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if err := proc.Process(ctx, f); err != nil {
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ctx.gs.fault(f, err)
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}
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}
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}
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}()
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}
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wg.Wait()
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if fin != nil {
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if err := fin.Finalize(ctx); err != nil {
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ctx.gs.fault(nil, err)
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}
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}
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}
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//
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// Context Implementation
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//
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func (ctx *context) DispatchFile(f File) {
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ctx.output <- f.(*file)
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}
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func (ctx *context) ReferenceFile(path string) {
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ctx.gs.referenceFile(path)
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}
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func (ctx *context) SrcDir() string {
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return ctx.gs.srcDir
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}
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func (ctx *context) DstDir() string {
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return ctx.gs.dstDir
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}
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