From 7cbde86ca30ba6712f94ffd6dba06ba6cec98da2 Mon Sep 17 00:00:00 2001
From: David Mueller <david-mueller2002@web.de>
Date: Wed, 8 May 2024 13:54:32 +0200
Subject: [PATCH] =?UTF-8?q?Decaf=20Changes=20-=20Pl=C3=BCmi=20Patch?=
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---
 Source/Decaf.g4 | 39 ++++++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 17 deletions(-)

diff --git a/Source/Decaf.g4 b/Source/Decaf.g4
index 2dde8dd..2af8297 100644
--- a/Source/Decaf.g4
+++ b/Source/Decaf.g4
@@ -3,11 +3,11 @@ grammar Decaf;
 program: classdecl+;
 
 //class identifier{...}
-classdecl:  AccessModifierPublic? 'class' Identifier OpenCurlyBracket (constuctorDecl|fieldDecl|methodDecl)* ClosedCurlyBracket;
-constuctorDecl: AccessModifierPublic? Identifier OpenRoundBracket parameterList? ClosedRoundBracket block; //Maybe not needed
+classdecl:  AccessModifierPublic? 'class' Identifier OpenCurlyBracket  (constuctorDecl|fieldDecl|methodDecl)*(MainMethodDecl block)? ClosedCurlyBracket;
+constuctorDecl: AccessModifierPublic? Identifier OpenRoundBracket parameterList? ClosedRoundBracket block; //Method without
 
 //Method and FieldVar
-methodDecl: MainMethodDecl block | AccessModifierPublic? (type | Void) Identifier OpenRoundBracket parameterList? ClosedRoundBracket block;
+methodDecl: AccessModifierPublic? (type | Void) Identifier OpenRoundBracket parameterList? ClosedRoundBracket block;
 fieldDecl: AccessModifierPublic? type Identifier Semicolon;
 
 //Parameters
@@ -17,16 +17,20 @@ parameter: type Identifier;
 //property, object.a, 3+1, a = 3
 expression: subExpression | binaryExpr;
 //subExpression to dissolve left-recusion
-subExpression: This | Identifier | instVar  | value | stmtExpr | notExpr | OpenRoundBracket expression ClosedRoundBracket;
-notExpr: Not expression;
+subExpression: This | assignableExpr | stmtExpr | OpenRoundBracket subExpression ClosedRoundBracket;
 assignableExpr: Identifier | instVar;
-instVar: This Dot Identifier | (This Dot)? (Identifier Dot)+ Identifier;
+instVar:  subReceiver? receivingMethod* Identifier;
 
 //.trim().toLength().toLowerCase().count ...
 methodCall: receiver? receivingMethod* Identifier OpenRoundBracket argumentList ClosedRoundBracket;
-argumentList: expression? | expression (Comma expression)*?;
+argumentList: expression? | expression (Comma expression)+;
 
-binaryExpr: calcExpr | nonCalcExpr;
+subReceiver: ((This | newDecl | Identifier) Dot);
+receiver: ((This | instVar | newDecl | Identifier) Dot);
+receivingMethod: Identifier OpenRoundBracket argumentList ClosedRoundBracket Dot;
+
+
+binaryExpr: calcExpr | nonCalcExpr| value | Not binaryExpr;
 
 calcExpr: calcExpr LineOperator dotExpr | dotExpr;
 dotExpr: dotExpr DotOperator dotSubExpr | dotSubExpr;
@@ -44,14 +48,14 @@ statement: returnStmt Semicolon | localVarDecl Semicolon | block | whileStmt | i
 returnStmt: Return (expression)?;
 localVarDecl: type Identifier (Assign expression)?;
 block: OpenCurlyBracket statement* ClosedCurlyBracket;
-whileStmt: While OpenRoundBracket expression ClosedRoundBracket block;
+whileStmt: While OpenRoundBracket expression ClosedRoundBracket statement;
 ifElseStmt: ifStmt elseStmt?;
 ifStmt: If OpenRoundBracket expression ClosedRoundBracket statement;
 elseStmt: Else statement;
 assign: assignableExpr Assign expression;
 newDecl: New Identifier OpenRoundBracket argumentList ClosedRoundBracket;
-receiver: ((This | instVar | newDecl | Identifier) Dot);
-receivingMethod: Identifier OpenRoundBracket argumentList ClosedRoundBracket Dot;
+
+
 type: Int | Boolean  | Char | Identifier;
 value: IntValue | BooleanValue | CharValue | NullValue;
 
@@ -59,11 +63,7 @@ value: IntValue | BooleanValue | CharValue | NullValue;
 AccessModifierPublic    : 'public' ;
 MainMethodDecl          : 'public static void main(String[] args)';
 
-//Types
-Void    : 'void';
-Int     : 'int';
-Boolean : 'bool';
-Char    : 'char';
+
 
 //Operators
 DotOperator         : Multipilkation | Division | Modulo;
@@ -102,7 +102,6 @@ This    : 'this';
 While   : 'while';
 If      : 'if';
 Else    : 'else';
-For     : 'for';
 Return  : 'return';
 New     : 'new';
 
@@ -112,6 +111,12 @@ fragment Numeric: [0-9];
 fragment ValidIdentSymbols : Alpabetic|Numeric|'$'|'_';
 Identifier: Alpabetic ValidIdentSymbols*;
 
+//Types
+Void    : 'void';
+Int     : 'int';
+Boolean : 'bool';
+Char    : 'char';
+
 //Values
 IntValue : ('+'|'-')*[0-9]+;
 CharValue: '\''~[\r\n]?'\'';