Feature: NeoConfigureFile interface

NeoLang/src/main/java/io/neolang/ast/visitor/AstVisitor.kt

@@ -9,4 +9,9 @@ class AstVisitor(private val ast: NeoLangAst, private val visitorCallback: IVisi
     fun start() {
         AstVisitorImpl.visitStartAst(ast, visitorCallback)
     }
+
+    @Suppress("UNCHECKED_CAST")
+    fun <T : IVisitorCallback> getCallback() : T {
+        return visitorCallback as T
+    }
 }

NeoLang/src/main/java/io/neolang/runtime/context/IContextMaker.kt

@@ -1,8 +0,0 @@
-package io.neolang.runtime.context
-
-/**
- * @author kiva
- */
-interface IContextMaker {
-    fun makeContext()
-}

NeoLang/src/main/java/io/neolang/runtime/context/NeoLangContext.kt

@@ -15,4 +15,8 @@ class NeoLangContext(val contextName: String) {
     fun getAttribute(attributeName: String) : NeoLangValue {
         return attributes[attributeName] ?: NeoLangValue.UNDEFINED
     }
+
+    fun getAttributes() : Map<String, NeoLangValue> {
+        return attributes
+    }
 }

NeoLang/src/main/java/io/neolang/runtime/type/NeoLangValue.kt

@@ -16,6 +16,10 @@ class NeoLangValue(private val rawValue: Any) {
         }
     }
 
+    fun isValid() : Boolean {
+        return this != UNDEFINED
+    }
+
     companion object {
         val UNDEFINED = NeoLangValue("<undefined>")
     }

app/build.gradle

@@ -57,4 +57,5 @@ dependencies {
 //    compile 'com.ramotion.cardslider:card-slider:0.1.0'
 //    compile 'com.github.igalata:Bubble-Picker:v0.2.4'
     compile project(path: ':NeoLang')
+    testCompile project(path: ':NeoLang')
 }

app/src/main/java/io/neoterm/App.kt

@@ -1,14 +1,7 @@
 package io.neoterm
 
 import android.app.Application
-import android.util.Log
-import io.neoterm.customize.color.ColorSchemeManager
-import io.neoterm.customize.completion.CompletionProviderManager
-import io.neoterm.customize.eks.ExtraKeysManager
-import io.neoterm.customize.font.FontManager
-import io.neoterm.customize.pm.NeoPackageManager
-import io.neoterm.customize.script.UserScriptManager
-import io.neoterm.frontend.service.ServiceManager
+import io.neoterm.frontend.NeoFrontend
 import io.neoterm.preference.NeoPreference
 import io.neoterm.utils.CrashHandler
 
@@ -21,14 +14,7 @@ class App : Application() {
         app = this
         NeoPreference.init(this)
         CrashHandler.init()
-
-        // ensure that we can access these any time
-        ServiceManager.registerService(ColorSchemeManager::class.java)
-        ServiceManager.registerService(FontManager::class.java)
-        ServiceManager.registerService(UserScriptManager::class.java)
-        ServiceManager.registerService(ExtraKeysManager::class.java)
-        ServiceManager.registerService(CompletionProviderManager::class.java)
-        ServiceManager.registerService(NeoPackageManager::class.java)
+        NeoFrontend.initialize()
     }
 
     companion object {

app/src/main/java/io/neoterm/customize/color/NeoColorScheme.kt

@@ -14,7 +14,6 @@ import java.util.*
 open class NeoColorScheme(val colorName: String) {
     companion object {
         private const val COLOR_PREFIX = "color"
-
         const val COLOR_DIM_BLACK = 0
         const val COLOR_DIM_RED = 1
         const val COLOR_DIM_GREEN = 2
@@ -64,7 +63,7 @@ open class NeoColorScheme(val colorName: String) {
     }
 
     fun createConfig(): Properties {
-        // TODO: 设计新的配色方案语法，这个只是临时用一下
+        // TODO: 兼容旧版本的配置并且解析新版本的配置文件
         validateColors()
         val prop = Properties()
         prop.put("foreground", foregroundColor)
@@ -77,6 +76,7 @@ open class NeoColorScheme(val colorName: String) {
     }
 
     fun parseConfig(file: File): Boolean {
+        // TODO: 兼容旧版本的配置并且解析新版本的配置文件
         try {
             return FileInputStream(file).use {
                 val prop = Properties()

app/src/main/java/io/neoterm/frontend/NeoFrontend.kt

@@ -0,0 +1,27 @@
+package io.neoterm.frontend
+
+import io.neoterm.customize.color.ColorSchemeManager
+import io.neoterm.customize.completion.CompletionProviderManager
+import io.neoterm.customize.eks.ExtraKeysManager
+import io.neoterm.customize.font.FontManager
+import io.neoterm.customize.pm.NeoPackageManager
+import io.neoterm.customize.script.UserScriptManager
+import io.neoterm.frontend.logger.NLog
+import io.neoterm.frontend.service.ServiceManager
+
+/**
+ * @author kiva
+ */
+object NeoFrontend {
+    fun initialize() {
+        // ensure that we can access these any time
+        ServiceManager.registerService(ColorSchemeManager::class.java)
+        ServiceManager.registerService(FontManager::class.java)
+        ServiceManager.registerService(UserScriptManager::class.java)
+        ServiceManager.registerService(ExtraKeysManager::class.java)
+        ServiceManager.registerService(CompletionProviderManager::class.java)
+        ServiceManager.registerService(NeoPackageManager::class.java)
+
+        NLog.initialize()
+    }
+}

app/src/main/java/io/neoterm/frontend/config/ConfigVisitor.kt

@@ -0,0 +1,49 @@
+package io.neoterm.frontend.config
+
+import io.neolang.ast.visitor.IVisitorCallback
+import io.neolang.runtime.context.NeoLangContext
+import io.neolang.runtime.type.NeoLangValue
+import java.util.*
+
+class ConfigVisitor : IVisitorCallback {
+    private val emptyContext = NeoLangContext("<NeoTerm-Empty-Safety>")
+    private val contextStack = Stack<NeoLangContext>()
+    private val definedContext = mutableListOf<NeoLangContext>()
+
+    fun getContext(contextName: String) : NeoLangContext {
+        definedContext.forEach {
+            if (it.contextName == contextName) {
+                return it
+            }
+        }
+        return emptyContext
+    }
+
+    fun getAttribute(contextName: String, attrName: String) : NeoLangValue {
+        return getContext(contextName).getAttribute(attrName)
+    }
+
+    override fun onStart() {
+        onEnterContext("global")
+    }
+
+    override fun onFinish() {
+        while (contextStack.isNotEmpty()) {
+            onExitContext()
+        }
+    }
+
+    override fun onEnterContext(contextName: String) {
+        val context = NeoLangContext(contextName)
+        contextStack.push(context)
+    }
+
+    override fun onExitContext() {
+        val context = contextStack.pop()
+        definedContext.add(context)
+    }
+
+    override fun getCurrentContext(): NeoLangContext {
+        return contextStack.peek()
+    }
+}

app/src/main/java/io/neoterm/frontend/config/NeoConfigureFile.kt

@@ -0,0 +1,36 @@
+package io.neoterm.frontend.config
+
+import io.neolang.parser.NeoLangParser
+import io.neoterm.utils.FileUtils
+import java.io.File
+
+/**
+ * @author kiva
+ */
+class NeoConfigureFile(val configureFile: String) {
+    private val configParser = NeoLangParser()
+    private var configVisitor : ConfigVisitor? = null
+
+    fun getVisitor(): ConfigVisitor {
+        checkParsed()
+        return configVisitor!!
+    }
+
+    fun parseConfigure(): Boolean {
+        val configContent = FileUtils.readFile(File(configureFile)) ?: return false
+        val programCode = String(configContent)
+        configParser.setInputSource(programCode)
+
+        val ast = configParser.parse()
+        val astVisitor = ast.visit().getVisitor(ConfigVisitor::class.java) ?: return false
+        astVisitor.start()
+        configVisitor = astVisitor.getCallback()
+        return true
+    }
+
+    private fun checkParsed() {
+        if (configVisitor == null) {
+            throw IllegalStateException("Configure file not loaded.")
+        }
+    }
+}

app/src/main/java/io/neoterm/frontend/logger/NLog.kt

@@ -0,0 +1,9 @@
+package io.neoterm.frontend.logger
+
+/**
+ * @author kiva
+ */
+object NLog {
+    fun initialize() {
+    }
+}

app/src/test/java/io/neoterm/ConfigureFileTest.kt

@@ -0,0 +1,24 @@
+package io.neoterm
+
+import io.neoterm.frontend.config.ConfigVisitor
+import io.neoterm.frontend.config.NeoConfigureFile
+import org.junit.Test
+
+/**
+ * @author kiva
+ */
+class ConfigureFileTest {
+    private fun printAttr(visitor: ConfigVisitor, contextName: String, attrName: String) {
+        println("attr [$contextName->$attrName]: ${visitor.getAttribute(contextName, attrName).asString()}")
+    }
+
+    @Test
+    fun configureFileTest() {
+        val config = NeoConfigureFile("NeoLang/example/color-scheme.nl")
+        if (config.parseConfigure()) {
+            println("Parsed!")
+            val visitor = config.getVisitor()
+            printAttr(visitor, "colors", "foreground")
+        }
+    }
+}