Implements binding unary expressions

src/Binder/Binder.cpp

@@ -1,8 +1,9 @@
 
 #include "Binder.hpp"
 
-BoundScriptStatement *Binder::Bind(ParsedScriptStatement *s) {
+BoundScriptStatement *Binder::Bind(Script* script, ParsedScriptStatement *s) {
     auto binder = Binder();
+    binder.ScriptData = script;
     auto statements = s->GetStatements();
     vector<BoundStatement*> boundStatements (statements.size());
     for (int i = 0; i < statements.size(); i++){
@@ -44,6 +45,8 @@ BoundExpression* Binder::BindExpression(ParsedExpression* expression){
 
         case ParsedExpressionKind ::Binary:
             return this -> BindBinaryOperator((BinaryExpression*)expression);
+        case ParsedExpressionKind ::Unary:
+            return this -> BindUnaryOperator((UnaryExpression*)expression);
 
         case ParsedExpressionKind ::Parenthesized:
             return BindExpression(((ParenthesizedExpression*)expression)->GetInnerExpression());
@@ -67,10 +70,10 @@ BoundExpression* Binder::BindBinaryOperator(BinaryExpression* expression){
                 auto rightNumeric = (NumericScriptType*)boundRightType;
                 if (leftNumeric->IsAwareOfFloat() && rightNumeric->IsAwareOfFloat()){
                     return new BoundBinaryExpression(boundLeft, boundRight,
-                            BoundBinaryOperator::Addition, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
+                            BoundBinaryOperation::Addition, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
                 }
                 else{
-                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::Addition, new NumericScriptType(false, false));
+                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::Addition, new NumericScriptType(false, false));
                 }
             }
             //TODO: String Concatenation
@@ -81,10 +84,10 @@ BoundExpression* Binder::BindBinaryOperator(BinaryExpression* expression){
                 auto rightNumeric = (NumericScriptType*)boundRightType;
                 if (leftNumeric->IsAwareOfFloat() && rightNumeric->IsAwareOfFloat()){
                     return new BoundBinaryExpression(boundLeft, boundRight,
-                                                     BoundBinaryOperator::Subtraction, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
+                                                     BoundBinaryOperation::Subtraction, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
                 }
                 else{
-                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::Subtraction, new NumericScriptType(false, false));
+                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::Subtraction, new NumericScriptType(false, false));
                 }
             }
             break;
@@ -94,10 +97,10 @@ BoundExpression* Binder::BindBinaryOperator(BinaryExpression* expression){
                 auto rightNumeric = (NumericScriptType*)boundRightType;
                 if (leftNumeric->IsAwareOfFloat() && rightNumeric->IsAwareOfFloat()){
                     return new BoundBinaryExpression(boundLeft, boundRight,
-                                                     BoundBinaryOperator::Multiplication, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
+                                                     BoundBinaryOperation::Multiplication, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
                 }
                 else{
-                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::Multiplication, new NumericScriptType(false, false));
+                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::Multiplication, new NumericScriptType(false, false));
                 }
             }
             break;
@@ -107,26 +110,57 @@ BoundExpression* Binder::BindBinaryOperator(BinaryExpression* expression){
                 auto rightNumeric = (NumericScriptType*)boundRightType;
                 if (leftNumeric->IsAwareOfFloat() && rightNumeric->IsAwareOfFloat()){
                     return new BoundBinaryExpression(boundLeft, boundRight,
-                                                     BoundBinaryOperator::Division, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
+                                                     BoundBinaryOperation::Division, new NumericScriptType(true, leftNumeric->IsFloat() || rightNumeric->IsFloat()));
                 }
                 else{
-                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::Division, new NumericScriptType(false, false));
+                    return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::Division, new NumericScriptType(false, false));
                 }
             }
             break;
         case BinaryOperatorKind ::Equality:
-            return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::Equality, new ScriptType(TypeClass::Bool));
+            return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::Equality, new ScriptType(TypeClass::Bool));
         case BinaryOperatorKind ::LogicalAnd:
             if (boundLeftType->GetClass() == TypeClass::Bool && boundRightType->GetClass() == TypeClass::Bool)
-                return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::LogicalAnd, new ScriptType(TypeClass::Bool));
+                return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::LogicalAnd, new ScriptType(TypeClass::Bool));
             break;
         case BinaryOperatorKind ::LogicalOr:
             if (boundLeftType->GetClass() == TypeClass::Bool && boundRightType->GetClass() == TypeClass::Bool)
-                return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperator::LogicalOr, new ScriptType(TypeClass::Bool));
+                return new BoundBinaryExpression(boundLeft, boundRight, BoundBinaryOperation::LogicalOr, new ScriptType(TypeClass::Bool));
             break;
         default:
             break;
     }
-    //TODO: Log error
+    this -> ScriptData -> Diagnostics->LogError(DiagnosticCode::NoBinaryOperationFound, expression->GetStartPosition(), expression->GetLength());
-    return new BoundBadExpression(boundLeft->GetStartPosition(), boundRight->GetEndPosition() - boundLeft->GetStartPosition());
+    return new BoundBadExpression(expression->GetStartPosition(), expression->GetLength());
+}
+
+BoundExpression* Binder::BindUnaryOperator(UnaryExpression* expression){
+    auto operand = this -> BindExpression(expression->GetOperand());
+    auto operandType = operand -> GetType();
+    switch (expression->GetOperatorKind()){
+        case UnaryOperatorKind ::Identity:
+            if (operandType->GetClass() == TypeClass::Number){
+                // Identity won't change anything during evaluation, so just return the inner operand.
+                return operand;
+            }
+            break;
+        case UnaryOperatorKind ::Negation:
+            if (operandType->GetClass() == TypeClass::Number){
+                auto innerType = (NumericScriptType*)operandType;
+                return new BoundUnaryExpression(operand, BoundUnaryOperation::Negation, new NumericScriptType(innerType->IsAwareOfFloat(),
+                        innerType->IsFloat()), expression->GetStartPosition(), expression->GetLength());
+            }
+            break;
+        case UnaryOperatorKind ::LogicalNegation:
+            if (operandType->GetClass() == TypeClass::Bool){
+                return new BoundUnaryExpression(operand, BoundUnaryOperation::LogicalNegation, new ScriptType(TypeClass::Bool),
+                        expression->GetStartPosition(), expression->GetLength());
+            }
+            break;
+        default:
+            break;
+    }
+    this -> ScriptData -> Diagnostics->LogError(DiagnosticCode::NoUnaryOperationFound, expression->GetStartPosition(), expression->GetLength());
+    return new BoundBadExpression(expression->GetStartPosition(), expression->GetLength());
+
 }

src/Binder/Binder.hpp

@@ -3,18 +3,21 @@
 #define PORYGONLANG_BINDER_HPP
 #include "../Parser/ParsedStatements/ParsedStatement.hpp"
 #include "BoundStatements/BoundStatement.hpp"
+#include "../Script.hpp"
 
 
 class Binder {
+    Script* ScriptData;
+
     BoundStatement *BindStatement(ParsedStatement *statement);
     BoundStatement *BindBlockStatement(ParsedStatement *statement);
     BoundStatement *BindExpressionStatement(ParsedStatement *statement);
 
     BoundExpression *BindExpression(ParsedExpression *expression);
     BoundExpression *BindBinaryOperator(BinaryExpression *expression);
-
+    BoundExpression *BindUnaryOperator(UnaryExpression *expression);
 public:
-    static BoundScriptStatement* Bind(ParsedScriptStatement* s);
+    static BoundScriptStatement* Bind(Script* script, ParsedScriptStatement* s);
 
 };
 

src/Binder/BoundExpressions/BoundExpression.hpp

@@ -133,13 +133,13 @@ public:
 class BoundBinaryExpression : public BoundExpression {
     BoundExpression* _left;
     BoundExpression* _right;
-    BoundBinaryOperator _operator;
+    BoundBinaryOperation _operation;
 public:
-    BoundBinaryExpression(BoundExpression* left, BoundExpression* right, BoundBinaryOperator op, ScriptType* result)
+    BoundBinaryExpression(BoundExpression* left, BoundExpression* right, BoundBinaryOperation op, ScriptType* result)
     : BoundExpression(left->GetStartPosition(), right->GetEndPosition() - left->GetStartPosition(), result){
         _left = left;
         _right = right;
-        _operator = op;
+        _operation = op;
     }
     ~BoundBinaryExpression() final{
         delete _left;
@@ -151,7 +151,24 @@ public:
     }
 };
 
+class BoundUnaryExpression : public BoundExpression {
+    BoundExpression* _operand;
+    BoundUnaryOperation  _operation;
+public:
+    BoundUnaryExpression(BoundExpression* operand, BoundUnaryOperation op, ScriptType* result, unsigned int start, unsigned int length)
+    :BoundExpression(start, length, result){
+        _operand = operand;
+        _operation = op;
+    }
 
+    ~BoundUnaryExpression() final{
+        delete _operand;
+    }
+
+    BoundExpressionKind GetKind() final{
+        return BoundExpressionKind ::Unary;
+    }
+};
 
 
 

src/Binder/BoundOperators.hpp

@@ -2,7 +2,7 @@
 #ifndef PORYGONLANG_BOUNDOPERATORS_HPP
 #define PORYGONLANG_BOUNDOPERATORS_HPP
 
-enum class BoundBinaryOperator{
+enum class BoundBinaryOperation{
     Addition,
     Subtraction,
     Multiplication,
@@ -13,4 +13,10 @@ enum class BoundBinaryOperator{
     Concatenation
 };
 
+enum class BoundUnaryOperation{
+    Identity,
+    Negation,
+    LogicalNegation,
+};
+
 #endif //PORYGONLANG_BOUNDOPERATORS_HPP

src/Diagnostics/DiagnosticCode.hpp

@@ -5,6 +5,9 @@
 enum class DiagnosticCode{
     UnexpectedCharacter,
     UnexpectedToken,
+
+    NoBinaryOperationFound,
+    NoUnaryOperationFound,
 };
 
 #endif //PORYGONLANG_DIAGNOSTICCODE_HPP