[06 - Top Down Parser] Add ÜB-Praxis-Abstiegsparser für X-Leer

2020-05-11 10:21:13 +02:00
parent 4c23ada03e
commit 18b2c44318
63 changed files with 6066 additions and 116 deletions
--- a/X-Leer/src/de/dhbw/compiler/xparser/XParserMain.java
+++ b/X-Leer/src/de/dhbw/compiler/xparser/XParserMain.java
@@ -0,0 +1,81 @@
+/* **********************************************
+ * Duale Hochschule Baden-Württemberg Karlsruhe
+ * Prof. Dr. Jörn Eisenbiegler
+ * 
+ * Vorlesung Übersetzerbau
+ * Praxis X Abstiegsparser
+ * 
+ * **********************************************
+ */
+
+package de.dhbw.compiler.xparser;
+
+import java.io.PrintWriter;
+import java.io.StringReader;
+
+
+
+public class XParserMain {
+	
+	private static final String TESTMIN =	"program beginend;\n"+
+											"begin\n"+
+											"end.";
+	
+	private static final String TESTXmin1 = 
+			"program xmin1;\n"+
+			"begin\n"+
+			"	y := 25+2*x-6*x;\n"+
+			"   if x<y then \n"+
+			"		begin\n" +
+			"			x:= -3/6*(y+2);\n"+
+			"   		if y<x then y:=y+3 else y:=y+4;\n"+
+			"		end\n" +
+			"	else\n" +
+			"		begin\n" +
+			"   		if y<x then y:=y+3;\n"+
+			"			x:= y*(y-x)/y;\n"+
+			"		end;\n" +
+			"	y := x*y;\n"+
+			"end.";
+	
+	private static final String TEST = 
+			"program test2;\n"+
+			"	x : int;\n"+
+			"	y : float;\n"+
+			"	z : string;\n"+
+			"begin\n"+
+			"	x := 4+5+6.2;\n"+
+			"	y := 3.56+1.2e3+45.e-67+4e34+3E-1;\n"+
+			"	z := \"Hello \\\"World\\\"\" + \":\";\n"+
+			"	z := \"Peter\" + 4;\n"+
+			"   if 2<3 then abc := 5 else abc := 7;\n"+
+			"   while (x>y) y := y+1;\n"+
+			"   begin\n"+
+			"      for (x:=1; x<6; x:=x+1) y:=y+2;\n"+
+			"   end;\n"+
+			"end.";
+	
+	private static final String BEISPIELFOLIEN = 
+			"program test5;\n"+
+			"	read  x : int;\n"+
+			"	print y : float;\n"+
+			"	z : int;\n"+
+			"begin\n"+
+			"	while (x<4) begin\n"+
+			"		for (z:=0; z<4; z:=z+1) x:=x+2;\n"+
+			"		if x=4 then begin\n"+
+			"			x:=z*(x+2);\n"+
+			"			x:=x+10;\n"+
+			"		end else y:=100.e-3;\n"+
+			"	end;\n"+
+			"end.\n";
+	
+	public static void main(String[] args) throws Exception {
+		
+		//TODO Initialize scanner and parser
+		//TODO Call parser
+		//TODO Output: Tree, count of tokens and comparisons
+		
+	}
+
+}