Move common expression classes to simple parsing setup

2026-03-07 05:23:02 +00:00 · 2021-11-22 21:47:05 +01:00
parent 5baa311025
commit 4f2a8454a6
28 changed files with 843 additions and 861 deletions
--- a/src/Parser/Parsing/Simple/Expression/SimpleExpressionBinaryOperation.h
+++ b/src/Parser/Parsing/Simple/Expression/SimpleExpressionBinaryOperation.h
@@ -0,0 +1,97 @@
+#pragma once
+
+#include <string>
+#include <memory>
+#include <functional>
+
+#include "ISimpleExpression.h"
+#include "SimpleExpressionValue.h"
+
+// https://en.cppreference.com/w/cpp/language/operator_precedence
+enum class SimpleOperationPrecedence
+{
+    MULTIPLICATION_DIVISION_REMAINDER = 1,
+    ADDITION_SUBTRACTION = 2,
+    BITWISE_SHIFT = 3,
+    RELATIONAL_GREATER_LESS_THAN = 4,
+    RELATIONAL_EQUALS = 5,
+    BITWISE_AND = 6,
+    BITWISE_OR = 8,
+    LOGICAL_AND = 9,
+    LOGICAL_OR = 10
+};
+
+enum class SimpleBinaryOperationId
+{
+    ADD,
+    SUBTRACT,
+    MULTIPLY,
+    DIVIDE,
+    REMAINDER,
+    BITWISE_AND,
+    BITWISE_OR,
+    SHIFT_LEFT,
+    SHIFT_RIGHT,
+    GREATER_THAN,
+    GREATER_EQUAL_THAN,
+    LESS_THAN,
+    LESS_EQUAL_THAN,
+    EQUALS,
+    NOT_EQUAL,
+    AND,
+    OR,
+
+    COUNT
+};
+
+class SimpleExpressionBinaryOperationType
+{
+public:
+    using evaluation_function_t = std::function<SimpleExpressionValue(const SimpleExpressionValue& operand1, const SimpleExpressionValue& operand2)>;
+
+    std::string m_syntax;
+    SimpleOperationPrecedence m_precedence;
+    evaluation_function_t m_evaluation_function;
+
+private:
+    SimpleExpressionBinaryOperationType(std::string syntax, SimpleOperationPrecedence precedence, evaluation_function_t evaluationFunction);
+
+public:
+    static const SimpleExpressionBinaryOperationType OPERATION_ADD;
+    static const SimpleExpressionBinaryOperationType OPERATION_SUBTRACT;
+    static const SimpleExpressionBinaryOperationType OPERATION_MULTIPLY;
+    static const SimpleExpressionBinaryOperationType OPERATION_DIVIDE;
+    static const SimpleExpressionBinaryOperationType OPERATION_REMAINDER;
+    static const SimpleExpressionBinaryOperationType OPERATION_BITWISE_AND;
+    static const SimpleExpressionBinaryOperationType OPERATION_BITWISE_OR;
+    static const SimpleExpressionBinaryOperationType OPERATION_SHIFT_LEFT;
+    static const SimpleExpressionBinaryOperationType OPERATION_SHIFT_RIGHT;
+    static const SimpleExpressionBinaryOperationType OPERATION_GREATER_THAN;
+    static const SimpleExpressionBinaryOperationType OPERATION_GREATER_EQUAL_THAN;
+    static const SimpleExpressionBinaryOperationType OPERATION_LESS_THAN;
+    static const SimpleExpressionBinaryOperationType OPERATION_LESS_EQUAL_THAN;
+    static const SimpleExpressionBinaryOperationType OPERATION_EQUALS;
+    static const SimpleExpressionBinaryOperationType OPERATION_NOT_EQUAL;
+    static const SimpleExpressionBinaryOperationType OPERATION_AND;
+    static const SimpleExpressionBinaryOperationType OPERATION_OR;
+
+    static const SimpleExpressionBinaryOperationType* const ALL_OPERATION_TYPES[static_cast<int>(SimpleBinaryOperationId::COUNT)];
+};
+
+class SimpleExpressionBinaryOperation final : public ISimpleExpression
+{
+public:
+    const SimpleExpressionBinaryOperationType* m_operation_type;
+    std::unique_ptr<ISimpleExpression> m_operand1;
+    std::unique_ptr<ISimpleExpression> m_operand2;
+
+    SimpleExpressionBinaryOperation(const SimpleExpressionBinaryOperationType* operationType,
+        std::unique_ptr<ISimpleExpression> operand1,
+        std::unique_ptr<ISimpleExpression> operand2);
+
+    _NODISCARD bool Operand1NeedsParenthesis() const;
+    _NODISCARD bool Operand2NeedsParenthesis() const;
+
+    bool IsStatic() override;
+    SimpleExpressionValue Evaluate() override;
+};