Only show result when using ARexx

src/main/evaluator.cpp

@@ -37,6 +37,7 @@ Evaluator::Evaluator(const char* input)
 {
     this->input = input;
     output = new CharBuffer();
+    ResultOnly = false;
 }
 
 Evaluator::~Evaluator()
@@ -52,6 +53,7 @@ void Evaluator::Evaluate() const
     output->ClearBuffer();
 
     Parser* parser = new Parser(input);
+    parser->ResultOnly = ResultOnly;
     SyntaxNode* node = parser->Parse();
     delete parser;
 

src/main/evaluator.h

@@ -35,14 +35,20 @@
 class Evaluator
 {
 public:
-    explicit Evaluator(const char* input);
+    explicit Evaluator(const char *input);
     ~Evaluator();
+
+    /**
+     * @brief Do not include expression string in evaluation result.
+     */
+    bool ResultOnly;
+
     void Evaluate() const;
-    char* GetResult() const;
+    char *GetResult() const;
 
 private:
-    const char* input;
-    CharBuffer* output;
+    const char *input;
+    CharBuffer *output;
 };
 
 #endif

src/main/parser.cpp

@@ -46,6 +46,7 @@ Parser::Parser(const char* input)
     token = nullptr;
     errorNode = nullptr;
     syntaxError = 0;
+    ResultOnly = false;
 }
 
 Parser::~Parser()
@@ -224,7 +225,7 @@ SyntaxNode* Parser::ParseStatement()
         res = new ListFunctionsStatement();
         break;
     case symeval:
-        res = new EvalStatement(ParseExpression());
+        res = new EvalStatement(ParseExpression(), ResultOnly);
         break;
     default:
         PutToken();
@@ -266,7 +267,7 @@ SyntaxNode* Parser::ParseEvaluation()
         return nullptr;
     }
 
-    StatementNode* sta = new EvalStatement(exp);
+    StatementNode* sta = new EvalStatement(exp, ResultOnly);
     if (exp->IsSilent())
     {
         sta = new SilentStatement(sta);

src/main/parser.h

@@ -52,6 +52,11 @@ public:
     explicit Parser(const char* input);
     ~Parser();
 
+    /**
+     * @brief Do not include expression string in evaluation result.
+     */
+    bool ResultOnly;
+
     /**
      * @brief Parses the input into a syntax tree.
      *

src/main/statement/eval.cpp

@@ -32,9 +32,10 @@
 #include "amathc.h"
 #include "system/program.h"
 
-EvalStatement::EvalStatement(ExpressionNode* expression) :
+EvalStatement::EvalStatement(ExpressionNode *expression, bool resultOnly) :
     StatementNode(), expression(expression)
 {
+    this->resultOnly = resultOnly;
 }
 
 EvalStatement::~EvalStatement()
@@ -45,31 +46,41 @@ EvalStatement::~EvalStatement()
     }
 }
 
-char* EvalStatement::Execute()
+char *EvalStatement::Execute()
 {
-    Number* result = expression->Evaluate();
-    Number* temp = result->Clone();
-    const char* text = expression->GetText();
-    const char* val = Program->Output->GetText(result);
+    Number *result = expression->Evaluate();
+    Number *temp = result->Clone();
+    const char *val = Program->Output->GetText(result);
 
     Program->SetLastResult(temp);
     delete temp;
 
-    output->Empty();
-    output->EnsureSize(
-        StrLen(text) + 3 +
-        StrLen(val) +
-        StrLen(NEWLINE) + 1);
+    if (resultOnly)
+    {
+        output->Empty();
+        output->EnsureSize(StrLen(val) + 1);
+        output->Append(val);
+    }
+    else
+    {
+        const char *text = expression->GetText();
 
-    output->Append(text);
-    output->Append(" = ");
-    output->Append(val);
-    output->Append(NEWLINE);
+        output->Empty();
+        output->EnsureSize(
+            StrLen(text) + 3 +
+            StrLen(val) +
+            StrLen(NEWLINE) + 1);
+
+        output->Append(text);
+        output->Append(" = ");
+        output->Append(val);
+        output->Append(NEWLINE);
+    }
 
     return output->GetString();
 }
 
-SyntaxNode* EvalStatement::GetNext()
+SyntaxNode *EvalStatement::GetNext()
 {
     if (iterator == nullptr)
     {
@@ -80,16 +91,16 @@ SyntaxNode* EvalStatement::GetNext()
     return nullptr;
 }
 
-void EvalStatement::Attach(SyntaxNode* node)
+void EvalStatement::Attach(SyntaxNode *node)
 {
     if (expression == nullptr)
     {
-        expression = static_cast<ExpressionNode*>(node);
+        expression = static_cast<ExpressionNode *>(node);
         node->SetParent(this);
     }
 }
 
-void EvalStatement::Detach(SyntaxNode* node)
+void EvalStatement::Detach(SyntaxNode *node)
 {
     if (expression == node)
     {
@@ -97,11 +108,11 @@ void EvalStatement::Detach(SyntaxNode* node)
     }
 }
 
-void EvalStatement::Replace(SyntaxNode* n, SyntaxNode* x)
+void EvalStatement::Replace(SyntaxNode *n, SyntaxNode *x)
 {
     if (expression == n)
     {
         delete expression;
-        expression = static_cast<ExpressionNode*>(x);
+        expression = static_cast<ExpressionNode *>(x);
     }
 }

src/main/statement/eval.h

@@ -39,7 +39,7 @@
 class EvalStatement : public virtual StatementNode
 {
 public:
-    explicit EvalStatement(ExpressionNode* expression);
+    explicit EvalStatement(ExpressionNode* expression, bool resultOnly);
     ~EvalStatement();
 
     char* Execute();
@@ -50,6 +50,7 @@ public:
 
 private:
     ExpressionNode* expression;
+    bool resultOnly;
 };
 
 #endif

src/system/amiga_arexx.cpp

@@ -193,15 +193,17 @@ bool AmigaARexx::HandleMessage(struct RexxMsg *message)
 
     message->rm_Result1 = 0;
 
+    Evaluator *evaluator = new Evaluator(message->rm_Args[0]);
+    evaluator->ResultOnly = true;
+    evaluator->Evaluate();
+
     if (message->rm_Action & RXFF_RESULT)
     {
-        Evaluator *evaluator = new Evaluator(message->rm_Args[0]);
-        evaluator->Evaluate();
         const char *result = evaluator->GetResult();
         message->rm_Result2 = (LONG)CreateArgstring((STRPTR)result, (LONG)StrLen(result));
-        delete evaluator;
     }
 
+    delete evaluator;
     return true;
 }