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plugin.go
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plugin.go
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// Copyright (C) 2017 Google 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 compiler
import (
"reflect"
"github.com/google/gapid/core/codegen"
"github.com/google/gapid/gapil/semantic"
)
// Plugin is a extension for the compiler.
type Plugin interface {
Build(*C)
}
type plugins []Plugin
func (l plugins) foreach(cb interface{}) {
cbV := reflect.ValueOf(cb)
cbT := cbV.Type()
if cbT.Kind() != reflect.Func || cbT.NumIn() != 1 {
panic("foreach() requires a function of the signature func(T)")
}
ty := cbT.In(0)
for _, p := range l {
pV := reflect.ValueOf(p)
if pV.Type().Implements(ty) {
cbV.Call([]reflect.Value{pV})
}
}
}
// ContextField represents a single additional context field added by a
// ContextDataPlugin.
type ContextField struct {
Name string // Name of the field
Type codegen.Type // Type of the field
Init func(s *S, fieldPtr *codegen.Value) // Optional initializer
Term func(s *S, fieldPtr *codegen.Value) // Optional terminator
}
// ContextDataPlugin is the interface implemented by plugins that require
// additional data to be stored in the runtime context.
type ContextDataPlugin interface {
// OnPreBuildContext is called just before the context structure is built.
// This can be used to build any additional types that are returned by
// ContextData().
OnPreBuildContext(*C)
// ContextData returns a slice of additional ContextFields that will be
// augmented to the context structure.
ContextData(*C) []ContextField
}
// FunctionExposerPlugin is the interface implemented by plugins that build
// public functions. These functions will be exposed on the output Program.
type FunctionExposerPlugin interface {
Functions() map[string]*codegen.Function
}
// OnBeginCommandListener is the interface implemented by plugins that generate
// custom logic at the start of the command.
type OnBeginCommandListener interface {
OnBeginCommand(s *S, cmd *semantic.Function)
}
// OnFenceListener is the interface implemented by plugins that generate
// custom logic at the fence of the command.
type OnFenceListener interface {
OnFence(s *S)
}
// OnEndCommandListener is the interface implemented by plugins that generate
// custom logic at the end of the command.
type OnEndCommandListener interface {
OnEndCommand(s *S, cmd *semantic.Function)
}
// OnReadListener is the interface implemented by plugins that generate custom
// logic when slices are read.
type OnReadListener interface {
OnRead(s *S, slice *codegen.Value, ty *semantic.Slice)
}
// OnWriteListener is the interface implemented by plugins that generate custom
// logic when slices are written.
type OnWriteListener interface {
OnWrite(s *S, slice *codegen.Value, ty *semantic.Slice)
}