Feature/foundation (#22)

* [WIP] feat: #18

* [WIP] feat: Function Pointer and protocol fix
#18

* add Test file

* feat: 解析 API_DEPRECATED_WITH_REPLACEMENT

* feat: 支持 API_AVAILABLE 声明常量，支持 NS_SWIFT_NAME 解析

* feat: 增加 attribute 的判断

* feat: support declare typedef function.

* feat: typedef struct 内容为函数指针的解析，修复 typeSpecifier 对指针的支持

* feat: delete unused token NS_TYPED_ENUM in lexer.

* feat: support generic type with super class.

* feat: add more token in direct channel.

* feat: support dot in DIRECTIVE_CHANNEL

* feat: 并行处理多个文件
#21

* feat: parse class without superclass or extension without category name.

* feat: parse function definition with macros.

* feat: method return type and arg type can be block or function pointer.

* feat: specify required node.js version

* fix ci

* fix: handle empty script

* fix condition

* fix block and method type converter

* feat: add fromPointer in class

* fix: delete string in basic auto return type.

.npmrc

@@ -0,0 +1 @@
+engine-strict=true

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - 7
+  - 12.16
 
 install:
   - git clone https://github.com/flutter/flutter.git -b stable --depth 1

bin/codegen.js

@@ -2,10 +2,11 @@
 
 const { program } = require('commander')
 const { execSync } = require('child_process')
-var DNObjectiveConverter = require('../lib/objc/DNObjectiveConverter').DNObjectiveConverter
 const fs = require("fs")
 const path = require("path")
 const yaml = require('js-yaml')
+const { Worker } = require('worker_threads')
+
 var outputDir
 var outputPackage
 var packageSet = new Set()
@@ -46,25 +47,13 @@ function recFindByExt(base, ext, files, result) {
     return result
 }
 
-function writeOutputToFileByPath(result, srcPath){
+function writeOutputToFileByPath(result, srcPath) {
     var srcFile = srcPath.substr(srcPath.lastIndexOf('/') + 1)
     var dartFile = srcFile.substring(0, srcFile.indexOf('.')).toLowerCase() + '.dart'
     var outputFile = outputDir ? path.join(outputDir, dartFile) : dartFile
     fs.writeFileSync(outputFile, result)
 }
 
-function callback(result, srcPath, error) {
-    if (!result) {
-       return
-    }
-
-    writeOutputToFileByPath(result.dartCode, srcPath)
-
-    if(outputPackage) {
-        result.packages.forEach(item => packageSet.add(item))
-    }
-}
-
 function formatDartFile(dartPath) {
     var command = 'flutter format ' + path.dirname(dartPath)
     execSync(command, { stdio: 'inherit' })
@@ -78,13 +67,45 @@ function createFlutterPackage(packageName) {
 function writeDependencyToPubSpec(filePath) {
     var doc = yaml.safeLoad(fs.readFileSync(filePath, 'utf8'));
     packageSet.forEach(item => {
-        if(typeof(item) == "undefined") {
+        if (typeof (item) == "undefined") {
             return
         }
         item = item.toLowerCase()
-        doc.dependencies[item] = { path : item}
+        doc.dependencies[item] = { path: item }
+    })
+    fs.writeFileSync(filePath, yaml.safeDump(doc).replace(/null/g, ''))
+}
+
+function generateDartWithWorker(path, script) {
+    return new Promise((resolve, reject) => {
+        const worker = new Worker(script, { 
+                workerData: { path: path }, 
+            resourceLimits: { maxOldGenerationSizeMb: 8 * 1024 } 
+        });
+        worker.on("message", resolve);
+        worker.on("error", reject);
+    });
+};
+
+async function runWorkItems(workItems) {
+    const promises = Object.keys(workItems).map((path) => {
+        let script = workItems[path]
+        return generateDartWithWorker(path, script).then((msg) => {
+            if (msg.error) {
+                console.log('filePath:' + msg.path + '\nerror:' + msg.error)
+            }
+            let result = msg.result
+            if (!result) {
+                return
+            }
+            writeOutputToFileByPath(result.dartCode, msg.path)
+
+            if (outputPackage) {
+                result.packages.forEach(item => packageSet.add(item))
+            }
+        })
     })
-    fs.writeFileSync(filePath, yaml.safeDump(doc).replace(/null/g,''))
+    await Promise.all(promises)
 }
 
 program.version('1.0.2')
@@ -95,19 +116,20 @@ program
     .option('-o, --output <output>', 'Output directory')
     .option('-p, --package <package>', 'Generate a shareable Flutter project containing modular Dart code.')
     .description('Generate dart code from native API.')
-    .action(function (input, options) {
+    .action(async function (input, options) {
         language = options.language
         if (!language) {
             language = 'auto'
         }
 
-        var extMap = {'objc': ['h'], 'java': ['java'], 'auto': ['h', 'java']}
+        var extMap = { 'objc': ['h'], 'java': ['java'], 'auto': ['h', 'java'] }
         var extArray = extMap[language]
 
         outputDir = options.output
-        if (outputDir) {
-            mkdirs(outputDir)
+        if (!outputDir) {
+            outputDir = process.cwd()
         }
+        mkdirs(outputDir)
 
         outputPackage = options.package
         if (outputPackage) {
@@ -119,24 +141,28 @@ program
         console.log('Output Dir: ' + outputDir)
 
         var baseOutputDir = outputDir
+
+        const langForExtension = { 'h': 'objc', 'java': 'java' }
+        // TODO: handle java here
+        const scriptForExtension = { 'h': path.join(__dirname, '../lib/objc/DNObjectiveCConverter.js') }
+
+        var workItems = new Map()
         extArray.forEach((ext) => {
-            var files = recFindByExt(input, ext)
-            if (files.length == 0) {
+            let files = recFindByExt(input, ext)
+            let script = scriptForExtension[ext]
+            if (files.length == 0 || !script) {
                 return
             }
-            var extToLang = {'h': 'objc', 'java': 'java'}
-            outputDir = path.join(baseOutputDir, extToLang[ext])
+
+            outputDir = path.join(baseOutputDir, langForExtension[ext])
             mkdirs(outputDir)
 
             files.forEach((file) => {
-                console.log('processing ' + file)
-                if (ext == 'h') {
-                    new DNObjectiveConverter(file, callback)
-                } else if (ext == 'java') {
-                    // TODO: handle java
-                }
+                workItems[file] = script;
             })
         })
+        await runWorkItems(workItems)
+
         outputDir = baseOutputDir
         formatDartFile(outputDir)
 

index.js

@@ -1,9 +1,13 @@
-var DNObjectiveConverter = require('./lib/objc/DNObjectiveConverter').DNObjectiveConverter
+let workerScript = './lib/objc/DNObjectiveCConverter'
+let dataPath = "./test/objc/RuntimeStub.h"
+let main = require(workerScript).main
 
-new DNObjectiveConverter("./test/objc/RuntimeStub.h", callback)
+main(dataPath, callback)
 
 function callback(result, path, error) {
-    console.log('result:\n' + result.dartCode + '\n\npath:\n' + path)
+    if (result) {
+        console.log('result:\n' + result.dartCode + '\n\npath:\n' + path)
+    }
     if (error) {
         console.log('\nerror:\n' + error)
     }

lib/objc/DNObjectiveCContext.js

@@ -149,11 +149,14 @@ class DNEnumDefContext extends DNContext {
 }
 
 class DNArgumentContext extends DNContext {
-    constructor(internal, name, type) {
+    constructor(internal) {
         super(internal)
-        this.name = name
-        this.type = type
-        this.anonDef = null   //user for block arguement
+        // For keywordDeclarator
+        if (internal.name && internal.types) {
+            this.name = internal.name.start.text
+        }
+        this.type = null
+        this.isBlock = false   //user for block arguement
         this.isNullable = false
         this.isOutParam = false
     }
@@ -166,7 +169,7 @@ class DNMethodContext extends DNContext {
         this.names = []
         this.args = []
         this.returnType = null
-        this.retValIsObj = false
+        this.callFromPointer = false
         this.isClassMethod = false
         this.macros = []
         this.availability = []
@@ -232,12 +235,12 @@ class DNMethodContext extends DNContext {
         var rawRetType = this.rawGenericType(this.returnType) //remove <> symbol
         var isMutableRetType = DNObjectiveCTypeConverter.SupportMutableTypes.indexOf(rawRetType) > -1
 
-        if (!isMutableRetType && !this.retValIsObj) {
+        if (!isMutableRetType && !this.callFromPointer) {
             return (this.returnType == 'void' ? '' : 'return') + impl
         }
 
         var newImpl = 'Pointer<Void> result = ' + impl.replace(');\n', '') + ' ,decodeRetVal: false);\n'
-        if (this.retValIsObj) {
+        if (this.callFromPointer) {
             var supportType = DNObjectiveCTypeConverter.DNDartToOCMap[rawRetType]
             if (supportType) {
                 newImpl += '    return ' + supportType + '.fromPointer(result).raw;\n'
@@ -279,7 +282,7 @@ class DNMethodContext extends DNContext {
                 nullableArgs.push(element)
             } else {
                 var argType = element.isOutParam ? 'NSObjectRef<' + element.type + '>' : element.type
-                var arg = element.anonDef ? element.anonDef : this.convertMutableTypeIfNeed(argType) + ' ' + element.name
+                var arg = element.isBlock ? argType : this.convertMutableTypeIfNeed(argType) + ' ' + element.name
                 argList += arg + (index == this.args.length - 1 && nullableArgs.length == 0 ? '' : ', ')
             }
         })
@@ -288,7 +291,7 @@ class DNMethodContext extends DNContext {
             argList += '{'
             nullableArgs.forEach((element, index) => {
                 var argType = element.isOutParam ? 'NSObjectRef<' + element.type + '>' : element.type
-                var arg = element.anonDef ? element.anonDef : this.convertMutableTypeIfNeed(argType) + ' ' + element.name
+                var arg = element.isBlock ? argType : this.convertMutableTypeIfNeed(argType) + ' ' + element.name
                 argList += arg + (index == nullableArgs.length - 1 ? '' : ', ')
             })
             argList += '}'
@@ -366,6 +369,12 @@ class DNPropertyContext extends DNContext {
     }
 
     parse() {
+        if (!this.name) {
+            return ''
+        }
+        if (!this.type) {
+            this.type = 'dynamic'
+        }
         var annotation = '  ' + this.availability.map((a) => a.parse()).join(' ') + '\n'
         var get = annotation + '  ' + this.type + ' get ' + this.name +
             ' => perform(\'' + this.name + '\'.toSEL());'
@@ -383,7 +392,10 @@ class DNProtocolContext extends DNContext {
         this.name = internal.name.start.text
         this.properties = []
         this.methods = []
-        this.protocols = []
+        let protocols = internal.protocols
+        this.protocols = protocols ? protocols.list.map((p) => {
+            return p.name.start.text
+        }) : []
         this.macros = []
         this.availability = []
     }
@@ -410,23 +422,32 @@ class DNClassContext extends DNContext {
     constructor(internal) {
         super(internal)
         this.name = internal.className.start.text
-        this.superClass = internal.superclassName.start.text
+        if (internal.superclassName) {
+            this.superClass = internal.superclassName.start.text
+        }
         this.properties = []
         this.methods = []
-        this.protocols = []
+        let protocols = internal.protocols
+        this.protocols = protocols ? protocols.list.map((p) => {
+            return p.name.start.text
+        }) : []
         this.macros = []
         this.availability = []
     }
 
     parse() {
         this.preMarkConstructMethods()
         var result = this.availability.map((a) => a.parse()).join(' ') + '\n'
-        result += '@native\nclass ' + this.name + ' extends ' + this.superClass
+        result += '@native\nclass ' + this.name
+        if (this.superClass) {
+            result += ' extends ' + this.superClass
+        }
         if (typeof this.protocols !== 'undefined' && this.protocols.length > 0) {
             result += ' with ' + this.protocols.join(',')
         }
         result += ' {\n'
         result += '  ' + this.name + '([Class isa]) : super(Class(\'' + this.name + '\'));\n'
+        result += '  ' + this.name + '.fromPointer(Pointer<Void> ptr) : super.fromPointer(ptr);\n'
         this.properties.forEach(element => {
             var parseRet = element.parse()
             result += parseRet ? parseRet + '\n' : ''
@@ -463,15 +484,22 @@ class DNClassContext extends DNContext {
 class DNCategoryContext extends DNContext {
     constructor(internal) {
         super(internal)
-        this.name = internal.children[1].start.text
-        this.host = internal.children[3].start.text
+        this.host = internal.className.start.text
+        if (internal.categoryName) {
+            this.name = internal.categoryName.start.text
+        } else {
+            this.name = 'DartNative'
+        }
         this.properties = []
         this.methods = []
-        this.protocols = []
+        let protocols = internal.protocols
+        this.protocols = protocols ? protocols.list.map((p) => {
+            return p.name.start.text
+        }) : []
     }
 
     parse() {
-        var result = 'extension ' + this.name + this.host + ' on ' + this.name
+        var result = 'extension ' + this.host + this.name + ' on ' + this.host
         result += ' {\n'
         this.properties.forEach(element => {
             result += element.parse() + '\n'

lib/objc/DNObjectiveCConverter.js

@@ -0,0 +1,45 @@
+let antlr4 = require('antlr4')
+let rf = require("fs")
+let ObjectiveCLexer = require('../../parser/objc/ObjectiveCLexer').ObjectiveCLexer
+let ObjectiveCParser = require('../../parser/objc/ObjectiveCParser').ObjectiveCParser
+let DNObjectiveCParserListener = require('./DNObjectiveCParserListener').DNObjectiveCParserListener
+let ConsoleErrorListener = require('antlr4/error/ErrorListener').ConsoleErrorListener
+const { parentPort, workerData } = require('worker_threads')
+
+function main(path, cb) {
+    if (!path) {
+        if (!workerData) {
+            return
+        }
+        path = workerData.path
+    }
+    if (!cb) {
+        cb = callback
+    }
+    console.log('processing: ' + path)
+    try {
+        const content = rf.readFileSync(path, "utf-8")
+        const chars = new antlr4.InputStream(content)
+        const lexer = new ObjectiveCLexer(chars)
+        const errorListener = new ConsoleErrorListener()
+        lexer.addErrorListener(errorListener)
+
+        const tokens = new antlr4.CommonTokenStream(lexer)
+        const parser = new ObjectiveCParser(tokens)
+        parser.addErrorListener(errorListener)
+        const tree = parser.translationUnit()
+        const listener = new DNObjectiveCParserListener(cb, path)
+        antlr4.tree.ParseTreeWalker.DEFAULT.walk(listener, tree)
+    } catch (e) {
+        cb(null, path, e)
+    }
+}
+
+function callback(result, path, error) {
+    // Send a message to the main thread.
+    parentPort.postMessage({result: result, path: path, error: error});
+}
+
+main()
+
+exports.main = main