| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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 parser.elements.declarations |
| |
| import lexer.Token |
| import lexer.TokenCategory |
| import lexer.TokenGrammar |
| import parser.elements.DocParser |
| import parser.peekToken |
| import writer.tokenValues |
| import java.text.ParseException |
| |
| class EnumDeclarationParser(iter: ListIterator<Token>, var shouldResetIterator: Boolean = false) : AbstractDeclarationParser(iter) { |
| |
| lateinit override var name: String |
| lateinit var type: String |
| var members = mutableListOf<EnumMember>() |
| |
| init { |
| parseTokens(scanTokens(iter)) |
| if (shouldResetIterator) resetIterator(iter) |
| } |
| |
| override fun parseTokens(tokens: List<Token>) { |
| val iter = tokens.listIterator() |
| var token = iter.next() |
| assert(token.identifier == TokenGrammar.ENUM) |
| assert(tokens.last().identifier == TokenGrammar.SEMICOLON) |
| |
| //name |
| token = iter.next() |
| if (token.category != TokenCategory.Word) |
| throw ParseException("Invalid enum name: ${tokenValues(tokens)}", this.indexStart) |
| this.name = token.value |
| |
| token = iter.next() //':' |
| if (token.identifier != TokenGrammar.COLON) |
| throw ParseException("Invalid enum type syntax: ${tokenValues(tokens)}", this.indexStart) |
| |
| //type: can be type name or package |
| assert(iter.hasNext()) |
| val sb = StringBuilder() |
| while (iter.hasNext() && peekToken(iter)!!.identifier != TokenGrammar.BRACE_OPEN) { |
| sb.append(iter.next().value) |
| } |
| this.type = sb.toString() |
| |
| //members |
| //convert iterator sequence of comma separated tokens to list of lists |
| scanDelimitedList(iter, openDelimiter = TokenGrammar.BRACE_OPEN, closeDelimiter = TokenGrammar.BRACE_CLOSE) |
| .forEach { |
| var statementTokens = it.toMutableList() |
| var docParser: DocParser? = null |
| assert(statementTokens.isNotEmpty()) |
| |
| //If doc, extract doc tokens and parse, and remove from statement tokens |
| if (statementTokens.first().identifier == TokenGrammar.DOC_START) { |
| val idx = statementTokens.indexOfFirst { it.identifier == TokenGrammar.DOC_END } |
| if (idx == -1) throw ParseException("Unable to find doc_end", this.indexStart) |
| |
| val docTokens = statementTokens.subList(0, idx+1) |
| docParser = DocParser(docTokens.listIterator()) |
| statementTokens = statementTokens.subList(idx+1, statementTokens.size) |
| } |
| if (statementTokens.isEmpty()) |
| throw ParseException("Invalid member in enum: ${tokenValues(tokens)}", this.indexStart) |
| val member = EnumMember(statementTokens) |
| member.docParser = docParser |
| this.members.add(member) |
| } |
| } |
| } |
| |
| //split member: name [= value] |
| class EnumMember(tokens: List<Token>) { |
| val name: String |
| var value: String? = null |
| var docParser: DocParser? = null |
| |
| init { |
| assert(tokens.isNotEmpty()) |
| this.name = tokens.first().value |
| |
| //check for assignment, take right side |
| if (tokens.any { it.identifier == TokenGrammar.EQUAL }) { |
| this.value = tokens.takeLastWhile { it.identifier != TokenGrammar.EQUAL } |
| .map { it.value } |
| .joinToString(" ") |
| } |
| } |
| } |