Initial commit

ÜB-Praxis-JFlex Scanner für AS-Leer/src/de/dhbw/compiler/jflexasscanner/TokenStreamTest.java

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+/* **********************************************
+ * Duale Hochschule Baden-Württemberg Karlsruhe
+ * Prof. Dr. Jörn Eisenbiegler
+ * 
+ * Vorlesung Übersetzerbau
+ * Praxis AS-Scanner mit JFlex
+ * - Testfall-Utility
+ * 
+ * **********************************************
+ */
+
+package de.dhbw.compiler.jflexasscanner;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.StringReader;
+
+public abstract class TokenStreamTest {
+	
+	protected void testTokenList(String in, boolean convert, Token... TokenList) throws Exception {
+		JFlexASScanner scanner = new JFlexASScanner(new StringReader(in));
+		Token myToken;
+		
+		for (Token expected : TokenList) {
+			myToken = scanner.nextToken();
+			assertEquals("Expect Token "+expected.toString()+". Error in type.", 
+					expected.getType(), myToken.getType());
+			assertEquals("Expect Token "+expected.toString()+". Error in text.", 
+					expected.getText(), myToken.getText());
+			assertEquals("Expect Token "+expected.toString()+". Error in line.", 
+					expected.getLine(), myToken.getLine());
+			assertEquals("Expect Token "+expected.toString()+". Error in column.", 
+					expected.getColumn(), myToken.getColumn());
+			if (convert) {
+				switch (myToken.getType()) {
+					case Token.NUM:
+						int intValue = Integer.parseInt(expected.getText());
+						assertEquals("Expected Token value "+intValue,
+								intValue,((NumToken)myToken).getValue());
+						break;
+					case Token.FRAC:
+						double doubleValue = Double.parseDouble(expected.getText().replace("^", "e"));
+						assertEquals("Expected Token value "+doubleValue,
+								doubleValue,((FracToken)myToken).getValue(), doubleValue*0.0000001);
+						break;
+					case Token.STR:
+						String stringValue = expected.getText().replace("\\\"", "\"");
+						stringValue = stringValue.substring(1,stringValue.length()-1);
+						assertEquals("Expected Token value "+stringValue,
+								stringValue,((StringToken)myToken).getValue());
+						break;
+				}
+			}
+		}
+		
+		myToken = scanner.nextToken();
+		assertEquals("Expected End of File (EOF), read " + myToken.toString() + ".", Token.EOF, myToken.getType());	
+	}
+	
+}