1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package parser.elements.declarations 18 19 import lexer.Token 20 import lexer.TokenCategory 21 import lexer.TokenGrammar 22 23 class InterfaceDeclarationParser(iter: ListIterator<Token>, var shouldResetIterator: Boolean = false) : AbstractDeclarationParser(iter) { 24 25 lateinit override var name: String 26 var extendsName: String? = null 27 var extendsVersion: Float? = null 28 29 init { 30 parseTokens(scanTokens(iter)) 31 if (shouldResetIterator) resetIterator(iter) 32 } 33 34 // example format: interface ITunerCallback extends @1.0::ITunerCallback parseTokensnull35 override fun parseTokens(tokens: List<Token>) { 36 assert(tokens.isNotEmpty()) 37 assert(tokens.first().identifier == TokenGrammar.INTERFACE) 38 assert(tokens.last().identifier == TokenGrammar.SEMICOLON) 39 40 //grab first line of declarationParser 41 val sigToks = tokens.takeWhile { it.identifier != TokenGrammar.BRACE_OPEN } 42 assert(sigToks[1].category == TokenCategory.Word) 43 assert(sigToks.last().category == TokenCategory.Word) //either interface name or extends name 44 45 this.name = sigToks[1].value 46 47 //parse extends info (if exists) 48 if (sigToks.any { it.identifier == TokenGrammar.EXTENDS }) { 49 this.extendsName = sigToks.last().value 50 this.extendsVersion = sigToks.find { it.category == TokenCategory.Number }?.value?.toFloat() 51 } 52 } 53 }