| /* |
| * Copyright (C) 2013 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 com.android.tools.idea.lang.rs; |
| |
| import com.google.common.base.Charsets; |
| import com.google.common.io.Files; |
| import com.intellij.psi.TokenType; |
| import com.intellij.psi.tree.IElementType; |
| import junit.framework.TestCase; |
| import org.jetbrains.android.AndroidTestCase; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| public class RenderscriptLexerTest extends TestCase { |
| private void validateLexer(String input, IElementType... tokens) { |
| int i = 0; |
| |
| RenderscriptLexer lexer = new RenderscriptLexer(); |
| |
| for (lexer.start(input); lexer.getTokenType() != null; lexer.advance(), i++) { |
| assertTrue(String.format("More tokens than expected (%1$d)", tokens.length), |
| i < tokens.length); |
| assertEquals("Mismatch at '" + lexer.getTokenText() + "'", tokens[i], lexer.getTokenType()); |
| } |
| } |
| |
| public void test1() { |
| validateLexer("const int i;", |
| RenderscriptTokenType.KEYWORD, |
| TokenType.WHITE_SPACE, |
| RenderscriptTokenType.KEYWORD, |
| TokenType.WHITE_SPACE, |
| RenderscriptTokenType.IDENTIFIER, |
| RenderscriptTokenType.SEPARATOR); |
| } |
| |
| public void testCStyleComment() { |
| validateLexer("foo(var/* comment */);", |
| RenderscriptTokenType.IDENTIFIER, |
| RenderscriptTokenType.BRACE, |
| RenderscriptTokenType.IDENTIFIER, |
| RenderscriptTokenType.COMMENT, |
| RenderscriptTokenType.BRACE, |
| RenderscriptTokenType.SEPARATOR); |
| } |
| |
| public void testCppComment() { |
| validateLexer("float// foo\n\tdouble", |
| RenderscriptTokenType.KEYWORD, |
| RenderscriptTokenType.COMMENT, |
| TokenType.WHITE_SPACE, |
| RenderscriptTokenType.KEYWORD); |
| } |
| |
| public void testString() { |
| validateLexer("\"Simple string\\ntest\\rwith escape\\chars.\";", |
| RenderscriptTokenType.STRING, |
| RenderscriptTokenType.SEPARATOR); |
| |
| // current lexer recognizes a string even if it doesn't terminate with a quote |
| validateLexer("\"No end quote", RenderscriptTokenType.STRING); |
| |
| // a newline should terminate a string as far as the lexer is concerned |
| validateLexer("\"Line separator\n\"", |
| RenderscriptTokenType.STRING, // string before \n |
| TokenType.WHITE_SPACE, // \n |
| RenderscriptTokenType.STRING); // the quote after \n |
| } |
| |
| public void testCharacterLiterals() { |
| validateLexer("'a'", RenderscriptTokenType.CHARACTER); |
| validateLexer("'\\n'", RenderscriptTokenType.CHARACTER); |
| validateLexer("'\\\\'", RenderscriptTokenType.CHARACTER); |
| |
| // newline should terminate a character literal (as far as the lexer is concerned) |
| validateLexer("'\n'", |
| RenderscriptTokenType.CHARACTER, // first quote |
| TokenType.WHITE_SPACE, // newline |
| RenderscriptTokenType.CHARACTER); // second quote |
| } |
| |
| public void testNumbers() { |
| validateLexer("3.14f", RenderscriptTokenType.NUMBER); |
| validateLexer("2.1e-123", RenderscriptTokenType.NUMBER); |
| } |
| |
| public void testFile() throws IOException { |
| String path = AndroidTestCase.getAbsoluteTestDataPath(); |
| String rsPath = "lang" + File.separator + "rs" + File.separator + "ball_physics.rs"; |
| String input = Files.toString(new File(path, rsPath), Charsets.UTF_8); |
| |
| RenderscriptLexer lexer = new RenderscriptLexer(); |
| |
| int i = 0; |
| for (lexer.start(input); lexer.getTokenType() != null; lexer.advance(), i++) { |
| assertTrue(lexer.getTokenType() != RenderscriptTokenType.UNKNOWN); |
| assertTrue(i < 10000); // check we are not stuck in an infinite loop |
| } |
| } |
| } |