End of Prac2

.classpath

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11/"/>
+	<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
+	<classpathentry kind="output" path="bin/default"/>
+</classpath>

.gitignore

@@ -5,3 +5,4 @@ tmp/
 .gradle/
 
 
+/build/

.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Triangle-Tools</name>
+	<comment>Project Triangle-Tools created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,13 @@
+arguments=
+auto.sync=false
+build.scans.enabled=false
+connection.gradle.distribution=GRADLE_DISTRIBUTION(WRAPPER)
+connection.project.dir=
+eclipse.preferences.version=1
+gradle.user.home=
+java.home=
+jvm.arguments=
+offline.mode=false
+override.workspace.settings=false
+show.console.view=false
+show.executions.view=false

.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.source=11

Triangle.AbstractMachine.Disassembler/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=..
+eclipse.preferences.version=1

Triangle.AbstractMachine.Disassembler/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.source=11

Triangle.AbstractMachine.Disassembler/bin/.gitignore

@@ -0,0 +1 @@
+/main/

Triangle.AbstractMachine.Interpreter/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=..
+eclipse.preferences.version=1

Triangle.AbstractMachine.Interpreter/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.source=11

Triangle.AbstractMachine.Interpreter/bin/.gitignore

@@ -0,0 +1 @@
+/main/

Triangle.AbstractMachine/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=..
+eclipse.preferences.version=1

Triangle.AbstractMachine/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.source=11

Triangle.AbstractMachine/bin/.gitignore

@@ -0,0 +1 @@
+/main/

Triangle.Compiler/.project

@@ -20,4 +20,11 @@
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
 	</natures>
+	<linkedResources>
+		<link>
+			<name>programs</name>
+			<type>2</type>
+			<location>/home/simon/Documents/Uni/CS/CSCU9A5-2/Triangle-Tools/programs</location>
+		</link>
+	</linkedResources>
 </projectDescription>

Triangle.Compiler/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=..
+eclipse.preferences.version=1

Triangle.Compiler/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
+org.eclipse.jdt.core.compiler.compliance=11
+org.eclipse.jdt.core.compiler.source=11

Triangle.Compiler/bin/.gitignore

@@ -0,0 +1,2 @@
+/main/
+/test/

Triangle.Compiler/src/main/java/triangle/abstractSyntaxTrees/commands/RepeatCommand.java

@@ -0,0 +1,35 @@
+/*
+ * @(#)WhileCommand.java                        2.1 2003/10/07
+ *
+ * Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
+ * Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
+ * and School of Computer and Math Sciences, The Robert Gordon University,
+ * St. Andrew Street, Aberdeen AB25 1HG, Scotland.
+ * All rights reserved.
+ *
+ * This software is provided free for educational use only. It may
+ * not be used for commercial purposes without the prior written permission
+ * of the authors.
+ */
+
+package triangle.abstractSyntaxTrees.commands;
+
+import triangle.abstractSyntaxTrees.expressions.Expression;
+import triangle.abstractSyntaxTrees.visitors.CommandVisitor;
+import triangle.syntacticAnalyzer.SourcePosition;
+
+public class RepeatCommand extends Command {
+
+	public RepeatCommand(Expression eAST, Command cAST, SourcePosition position) {
+		super(position);
+		E = eAST;
+		C = cAST;
+	}
+
+	public <TArg, TResult> TResult visit(CommandVisitor<TArg, TResult> v, TArg arg) {
+		return v.visitRepeatCommand(this, arg);
+	}
+
+	public Expression E;
+	public final Command C;
+}

Triangle.Compiler/src/main/java/triangle/abstractSyntaxTrees/visitors/CommandVisitor.java

@@ -5,6 +5,7 @@ import triangle.abstractSyntaxTrees.commands.CallCommand;
 import triangle.abstractSyntaxTrees.commands.EmptyCommand;
 import triangle.abstractSyntaxTrees.commands.IfCommand;
 import triangle.abstractSyntaxTrees.commands.LetCommand;
+import triangle.abstractSyntaxTrees.commands.RepeatCommand;
 import triangle.abstractSyntaxTrees.commands.SequentialCommand;
 import triangle.abstractSyntaxTrees.commands.WhileCommand;
 
@@ -24,4 +25,6 @@ public interface CommandVisitor<TArg, TResult> {
 
 	TResult visitWhileCommand(WhileCommand ast, TArg arg);
 
+	TResult visitRepeatCommand(RepeatCommand ast, TArg arg);
+
 }

Triangle.Compiler/src/main/java/triangle/codeGenerator/Encoder.java

@@ -38,6 +38,7 @@ import triangle.abstractSyntaxTrees.commands.CallCommand;
 import triangle.abstractSyntaxTrees.commands.EmptyCommand;
 import triangle.abstractSyntaxTrees.commands.IfCommand;
 import triangle.abstractSyntaxTrees.commands.LetCommand;
+import triangle.abstractSyntaxTrees.commands.RepeatCommand;
 import triangle.abstractSyntaxTrees.commands.SequentialCommand;
 import triangle.abstractSyntaxTrees.commands.WhileCommand;
 import triangle.abstractSyntaxTrees.declarations.BinaryOperatorDeclaration;
@@ -181,6 +182,11 @@ public final class Encoder implements ActualParameterVisitor<Frame, Integer>,
 		return null;
 	}
 	
+	@Override
+	public Void visitRepeatCommand(RepeatCommand ast, Frame frame) {
+		return null;
+	}
+
 	// Expressions
 	@Override
 	public Integer visitArrayExpression(ArrayExpression ast, Frame frame) {

Triangle.Compiler/src/main/java/triangle/contextualAnalyzer/Checker.java

@@ -34,6 +34,7 @@ import triangle.abstractSyntaxTrees.commands.CallCommand;
 import triangle.abstractSyntaxTrees.commands.EmptyCommand;
 import triangle.abstractSyntaxTrees.commands.IfCommand;
 import triangle.abstractSyntaxTrees.commands.LetCommand;
+import triangle.abstractSyntaxTrees.commands.RepeatCommand;
 import triangle.abstractSyntaxTrees.commands.SequentialCommand;
 import triangle.abstractSyntaxTrees.commands.WhileCommand;
 import triangle.abstractSyntaxTrees.declarations.BinaryOperatorDeclaration;
@@ -185,6 +186,11 @@ public final class Checker implements ActualParameterVisitor<FormalParameter, Vo
 		return null;
 	}
 	
+	@Override
+	public Void visitRepeatCommand(RepeatCommand ast, Void arg) {
+		return null;
+	}
+
 	// Expressions
 
 	// Returns the TypeDenoter denoting the type of the expression. Does

Triangle.Compiler/src/main/java/triangle/optimiser/ConstantFolder.java

@@ -19,6 +19,7 @@ import triangle.abstractSyntaxTrees.commands.CallCommand;
 import triangle.abstractSyntaxTrees.commands.EmptyCommand;
 import triangle.abstractSyntaxTrees.commands.IfCommand;
 import triangle.abstractSyntaxTrees.commands.LetCommand;
+import triangle.abstractSyntaxTrees.commands.RepeatCommand;
 import triangle.abstractSyntaxTrees.commands.SequentialCommand;
 import triangle.abstractSyntaxTrees.commands.WhileCommand;
 import triangle.abstractSyntaxTrees.declarations.BinaryOperatorDeclaration;
@@ -496,16 +497,23 @@ public class ConstantFolder implements ActualParameterVisitor<Void, AbstractSynt
 		return null;
 	}
 	
+	/*
+	@Override
+	public AbstractSyntaxTree visitRepeatCommand(RepeatCommand ast, Void arg) {
+		return null;
+	}
+	*/
+
 	// TODO uncomment if you've implemented the repeat command
-//	@Override
-//	public AbstractSyntaxTree visitRepeatCommand(RepeatCommand ast, Void arg) {
-//		ast.C.visit(this);
-//		AbstractSyntaxTree replacement = ast.E.visit(this);
-//		if (replacement != null) {
-//			ast.E = (Expression) replacement;
-//		}
-//		return null;
-//	}
+	@Override
+	public AbstractSyntaxTree visitRepeatCommand(RepeatCommand ast, Void arg) {
+		ast.C.visit(this);
+		AbstractSyntaxTree replacement = ast.E.visit(this);
+		if (replacement != null) {
+			ast.E = (Expression) replacement;
+		}
+		return null;
+	}
 
 	@Override
 	public AbstractSyntaxTree visitMultipleArrayAggregate(MultipleArrayAggregate ast, Void arg) {

Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Parser.java

@@ -37,6 +37,7 @@ import triangle.abstractSyntaxTrees.commands.Command;
 import triangle.abstractSyntaxTrees.commands.EmptyCommand;
 import triangle.abstractSyntaxTrees.commands.IfCommand;
 import triangle.abstractSyntaxTrees.commands.LetCommand;
+import triangle.abstractSyntaxTrees.commands.RepeatCommand;
 import triangle.abstractSyntaxTrees.commands.SequentialCommand;
 import triangle.abstractSyntaxTrees.commands.WhileCommand;
 import triangle.abstractSyntaxTrees.declarations.ConstDeclaration;
@@ -330,6 +331,16 @@ public class Parser {
 		}
 			break;
 
+		case Token.REPEAT: {
+			acceptIt();
+			Command cAST = parseSingleCommand();
+			accept(Token.UNTIL);
+			Expression eAST = parseExpression();
+			finish(commandPos);
+			commandAST = new RepeatCommand(eAST, cAST, commandPos);
+		}
+			break;
+			
 		case Token.SEMICOLON:
 		case Token.END:
 		case Token.ELSE:

Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Scanner.java

@@ -35,7 +35,7 @@ public final class Scanner {
 
 	private boolean isOperator(char c) {
 		return (c == '+' || c == '-' || c == '*' || c == '/' || c == '=' || c == '<' || c == '>' || c == '\\'
-				|| c == '&' || c == '@' || c == '%' || c == '^' || c == '?');
+				|| c == '&' || c == '@' || c == '%' || c == '^' || c == '?' || c == '|'); //[PRAC2:P2:6] added |
 	}
 
 	///////////////////////////////////////////////////////////////////////////////
@@ -65,15 +65,26 @@ public final class Scanner {
 		switch (currentChar) {
 		
 		// comment
-		case '!': {
+		case '#': //[PRAC2:P2:3]
+		case '!': 
 			takeIt();
 			while ((currentChar != SourceFile.EOL) && (currentChar != SourceFile.EOT))
 				takeIt();
 			if (currentChar == SourceFile.EOL)
 				takeIt();
-		}
 			break;
 			
+		// multi-line comments
+			// Similar to the single line comment but we are ignoring new lines
+		case '$':
+			takeIt();
+			while ((currentChar != '$') && (currentChar != SourceFile.EOT))
+				takeIt();
+			if(currentChar == '$')
+				takeIt();
+			break;
+			
+
 		// whitespace
 		case ' ':
 		case '\n':
@@ -173,6 +184,7 @@ public final class Scanner {
 		case '%':
 		case '^':
 		case '?':
+		case '|': //[PRAC2:P2:6]
 			takeIt();
 			while (isOperator(currentChar))
 				takeIt();
@@ -252,7 +264,7 @@ public final class Scanner {
 		currentlyScanningToken = false;
 		// skip any whitespace or comments
 		while (currentChar == '!' || currentChar == ' ' || currentChar == '\n' || currentChar == '\r'
-				|| currentChar == '\t')
+				|| currentChar == '\t' || currentChar == '#' || currentChar == '$') //[PRAC2:P2:3 && 5]
 			scanSeparator();
 
 		currentlyScanningToken = true;

Triangle.Compiler/src/main/java/triangle/syntacticAnalyzer/Token.java

@@ -64,20 +64,20 @@ final class Token extends Object {
 
 			// reserved words - must be in alphabetical order...
 			ARRAY = 4, BEGIN = 5, CONST = 6, DO = 7, ELSE = 8, END = 9, FUNC = 10, IF = 11, IN = 12, LET = 13, OF = 14,
-			PROC = 15, RECORD = 16, THEN = 17, TYPE = 18, VAR = 19, WHILE = 20,
+			PROC = 15, RECORD = 16, REPEAT = 17, THEN = 18, TYPE = 19, UNTIL = 20, VAR = 21, WHILE = 22,
 
 			// punctuation...
-			DOT = 21, COLON = 22, SEMICOLON = 23, COMMA = 24, BECOMES = 25, IS = 26,
+			DOT = 23, COLON = 24, SEMICOLON = 25, COMMA = 26, BECOMES = 27, IS = 28,
 
 			// brackets...
-			LPAREN = 27, RPAREN = 28, LBRACKET = 29, RBRACKET = 30, LCURLY = 31, RCURLY = 32,
+			LPAREN = 29, RPAREN = 30, LBRACKET = 31, RBRACKET = 32, LCURLY = 33, RCURLY = 34,
 
 			// special tokens...
-			EOT = 33, ERROR = 34;
+			EOT = 35, ERROR = 36;
 
 	private static String[] tokenTable = new String[] { "<int>", "<char>", "<identifier>", "<operator>", "array",
-			"begin", "const", "do", "else", "end", "func", "if", "in", "let", "of", "proc", "record", "then", "type",
-			"var", "while", ".", ":", ";", ",", ":=", "~", "(", ")", "[", "]", "{", "}", "", "<error>" };
+			"begin", "const", "do", "else", "end", "func", "if", "in", "let", "of", "proc", "record", "repeat", "then", "type",
+			"until", "var", "while", ".", ":", ";", ",", ":=", "~", "(", ")", "[", "]", "{", "}", "", "<error>" };
 
 	private final static int firstReservedWord = Token.ARRAY, lastReservedWord = Token.WHILE;
 

Triangle.Compiler/src/main/java/triangle/treeDrawer/LayoutVisitor.java

@@ -33,6 +33,7 @@ import triangle.abstractSyntaxTrees.commands.CallCommand;
 import triangle.abstractSyntaxTrees.commands.EmptyCommand;
 import triangle.abstractSyntaxTrees.commands.IfCommand;
 import triangle.abstractSyntaxTrees.commands.LetCommand;
+import triangle.abstractSyntaxTrees.commands.RepeatCommand;
 import triangle.abstractSyntaxTrees.commands.SequentialCommand;
 import triangle.abstractSyntaxTrees.commands.WhileCommand;
 import triangle.abstractSyntaxTrees.declarations.BinaryOperatorDeclaration;
@@ -159,6 +160,11 @@ public class LayoutVisitor implements ActualParameterVisitor<Void, DrawingTree>,
 		return layoutBinary("WhileCom.", d1, d2);
 	}
 	
+	@Override
+	public DrawingTree visitRepeatCommand(RepeatCommand ast, Void obj) {
+		return null;
+	}
+
 	// Expressions
 	@Override
 	public DrawingTree visitArrayExpression(ArrayExpression ast, Void obj) {

Triangle.Compiler/src/test/java/triangle/syntacticAnalyser/TestScanner.java

@@ -22,28 +22,32 @@ public class TestScanner {
 
 	@Test
 	public void testHiNewComment() {
-		compileExpectFailure("/hi-newcomment.tri");
+		compileExpectSuccess("/hi-newcomment.tri");
 	}
 	
-
+	//[PRAC2:P2:5]
 	@Test
 	public void testHiNewComment2() {
-		compileExpectFailure("/hi-newcomment2.tri");
+		compileExpectSuccess("/hi-newcomment2.tri");
 	}
 	
 
 	@Test
 	public void testBarDemo() {
-		compileExpectFailure("/bardemo.tri");
+		compileExpectSuccess("/bardemo.tri");
 	}
 	
 
 	@Test
 	public void testRepeatUntil() {
-		compileExpectFailure("/repeatuntil.tri");
+		compileExpectSuccess("/repeatuntil.tri");
 	}
 	
-	
+	//[PRAC2:P1:8]
+	@Test
+	public void testAdd() {
+		compileExpectSuccess("/add.tri");
+	}
 	
 	private void compileExpectSuccess(String filename) {
 		// build.gradle has a line sourceSets.test.resources.srcDir file("$rootDir/programs")

programs/add.tri

@@ -0,0 +1,22 @@
+let
+    var a: Integer;
+    var b: Integer
+in
+begin
+    ! Get user input for both values
+    put('>'); put(' '); getint(var a);
+    put('>'); put(' '); getint(var b);
+
+    ! Sum
+    putint(a+b);
+    puteol();
+
+    ! Prod.
+    putint(a*b);
+    puteol();
+
+    ! Check if the same
+    if a = b
+       then    begin put('S'); put('a'); put('m'); put('e'); put('!'); end
+       else    !nothing
+end

programs/errors.tri

@@ -7,7 +7,7 @@ let
 
   var me: Name;
   var silly : maxint;
-  var silly: Rec;
+ ! var silly: Rec; ! [PRAC2:5] Fixed error about "silly"
 
   proc putstr (s: String) ~
     let var i: Integer

programs/triangle.tri

@@ -1,5 +1,4 @@
 let
-
  proc putmany (n: Integer, c: Char) ~
   let
    var i: Integer