a572a10ef7
This adds a code generator, implemented in Go. This PR also prepares `Options.h` (the ground truth) by simplifying its syntax just a bit. The ground truth file must have very simple C++ syntax, which is described in the README: https://github.com/google/filament/blob/pr/codegen2/tools/codegen-options/README.md This process revealed a small bug: `Filter.MEDIAN` was bound to the incorrect value in Java. The generated code is not yet used, stay tuned.
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"fmt"
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"log"
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"os"
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"path/filepath"
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"text/template"
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)
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func EmitJavaScript(definitions []Scope, outputFolder string) {
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customExtensions := template.FuncMap{
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"jsify": func(cppvalue string) string {
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// Values are already massaged in the parsing phase, which is a better place than
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// here since the parser can report the line number for unexpected syntax.
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return cppvalue
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},
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}
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codegen := template.New("Settings").Funcs(customExtensions)
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codegen = template.Must(codegen.ParseFiles("javascript.template"))
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{
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path := filepath.Join(outputFolder, "jsbindings_generated.cpp")
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file, err := os.Create(path)
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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defer fmt.Println("Generated " + path)
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codegen.ExecuteTemplate(file, "JsBindingsHeader", nil)
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for _, definition := range definitions {
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switch definition.(type) {
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case *StructDefinition:
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codegen.ExecuteTemplate(file, "JsBindingsStruct", definition)
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}
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}
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codegen.ExecuteTemplate(file, "JsBindingsFooter", nil)
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}
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{
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path := filepath.Join(outputFolder, "jsenums_generated.cpp")
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file, err := os.Create(path)
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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defer fmt.Println("Generated " + path)
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codegen.ExecuteTemplate(file, "JsEnumsHeader", nil)
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for _, definition := range definitions {
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switch definition.(type) {
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case *EnumDefinition:
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codegen.ExecuteTemplate(file, "JsEnum", definition)
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}
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}
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codegen.ExecuteTemplate(file, "JsEnumsFooter", nil)
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}
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{
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path := filepath.Join(outputFolder, "extensions_generated.js")
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file, err := os.Create(path)
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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defer fmt.Println("Generated " + path)
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codegen.ExecuteTemplate(file, "JsExtensionsHeader", nil)
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for _, definition := range definitions {
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switch definition.(type) {
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case *StructDefinition:
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codegen.ExecuteTemplate(file, "JsExtension", definition)
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}
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}
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codegen.ExecuteTemplate(file, "JsExtensionsFooter", nil)
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}
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// TODO: filament.d.ts
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}
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