Merge branch '29-remove-print-statement' into 'master'

delete print statement

Closes #29

See merge request mkais001/klang!16

src/main/antlr4/de/hsrm/compiler/Klang/Klang.g4

@@ -28,8 +28,7 @@ braced_block
 // Only the first child of a rule alternative will be visited!
 // i.e. SCOL won't be visited, but thats unneccesary anyway
 statement
-  : print
-  | if_statement
+  : if_statement
   | variable_declaration SCOL
   | variable_assignment SCOL
   | return_statement
@@ -38,10 +37,6 @@ statement
   | forLoop
   ;
 
-print
-  : PRINT expression SCOL
-  ;
-
 if_statement
   : IF OPAR cond = expression CPAR then = braced_block (ELSE (alt = braced_block | elif = if_statement) )?
   ; 
@@ -123,7 +118,6 @@ forLoop
              step = variable_assignment CPAR braced_block
   ;
 
-PRINT: 'print';
 IF: 'if';
 ELSE: 'else';
 FUNC: 'function';

src/main/java/de/hsrm/compiler/Klang/ContextAnalysis.java

@@ -102,18 +102,6 @@ public class ContextAnalysis extends KlangBaseVisitor<Node> {
     return result;
   }
 
-  @Override
-  public Node visitPrint(KlangParser.PrintContext ctx) {
-    ctx.start.getLine();
-    ctx.start.getCharPositionInLine();
-    Node expression = this.visit(ctx.expression());
-    PrintStatement result = new PrintStatement((Expression) expression);
-    result.type = null;
-    result.line = ctx.start.getLine();
-    result.col = ctx.start.getCharPositionInLine();
-    return result;
-  }
-
   @Override
   public Node visitIf_statement(KlangParser.If_statementContext ctx) {
     Node condition = this.visit(ctx.cond);

src/main/java/de/hsrm/compiler/Klang/nodes/statements/PrintStatement.java

@@ -1,17 +0,0 @@
-package de.hsrm.compiler.Klang.nodes.statements;
-
-import de.hsrm.compiler.Klang.nodes.expressions.Expression;
-import de.hsrm.compiler.Klang.visitors.Visitor;
-
-public class PrintStatement extends Statement {
-    public Expression expression;
-
-    public PrintStatement(Expression expression) {
-        this.expression = expression;
-    }
-
-    @Override
-    public <R> R welcome(Visitor<R> v) {
-        return v.visit(this);
-    }
-}

src/main/java/de/hsrm/compiler/Klang/visitors/EvalVisitor.java

@@ -385,13 +385,6 @@ public class EvalVisitor implements Visitor<Value> {
     return result;
   }
 
-  @Override
-  public Value visit(PrintStatement e) {
-    Value value = e.expression.welcome(this);
-    System.out.println(value.asObject());
-    return null;
-  }
-
   @Override
   public Value visit(VariableDeclaration e) {
     Value initialValue = null;

src/main/java/de/hsrm/compiler/Klang/visitors/GenASM.java

@@ -556,11 +556,6 @@ public class GenASM implements Visitor<Void> {
     return null;
   }
 
-  @Override
-  public Void visit(PrintStatement e) {
-    throw new RuntimeException("Das machen wir mal nicht, ne?!");
-  }
-
   @Override
   public Void visit(VariableDeclaration e) {
     // If there is an initialization present,

src/main/java/de/hsrm/compiler/Klang/visitors/GetVars.java

@@ -179,12 +179,6 @@ class GetVars implements Visitor<Void> {
     return null;
   }
 
-  @Override
-  public Void visit(PrintStatement e) {
-    e.expression.welcome(this);
-    return null;
-  }
-
   @Override
   public Void visit(VariableDeclaration e) {
     vars.add(e.name);

src/main/java/de/hsrm/compiler/Klang/visitors/PrettyPrintVisitor.java

@@ -276,14 +276,6 @@ public class PrettyPrintVisitor implements Visitor<Void> {
     return null;
   }
 
-  @Override
-  public Void visit(PrintStatement e) {
-    ex.write("print ");
-    e.expression.welcome(this);
-    ex.write(";");
-    return null;
-  }
-
   @Override
   public Void visit(VariableDeclaration e) {
     ex.write("let " + e.name + ": " + e.type.getName());

src/main/java/de/hsrm/compiler/Klang/visitors/Visitor.java

@@ -32,7 +32,6 @@ public interface Visitor<R> {
     R visit(WhileLoop e);
     R visit(DoWhileLoop e);
     R visit(ForLoop e);
-    R visit(PrintStatement e);
     R visit(VariableDeclaration e);
     R visit(VariableAssignment e);
     R visit(ReturnStatement e);