Add skeleton CountryRelationManager

Change `DiplomaticAction::Argument` to refer to `CountryInstance*` instead of `Country*`
Add `GameManager&` argument to `DiplomaticActionManager::setup_diplomatic_actions`
Add some ErrorMacros, likely and unlikely macros and stringization macros (based on Godot's macros)
Implement `increase_relations` DiplomaticAction commit function
Implement `decrease_relations` DiplomaticAction commit function
Fix include StringUtils.hpp errors

1 files changed, 68 insertions, 0 deletions

diff --git a/src/openvic-simulation/utility/ErrorMacros.hpp b/src/openvic-simulation/utility/ErrorMacros.hpp
new file mode 100644
index 0000000..47b73d5
--- /dev/null
+++ b/src/openvic-simulation/utility/ErrorMacros.hpp
@@ -0,0 +1,68 @@
+#pragma once
+
+#include "openvic-simulation/utility/Logger.hpp" // IWYU pragma: keep
+#include "openvic-simulation/utility/Utility.hpp"
+
+/**
+ * Try using `ERR_FAIL_COND_MSG`.
+ * Only use this macro if there is no sensible error message.
+ * If checking for null use ERR_FAIL_NULL_MSG instead.
+ * If checking index bounds use ERR_FAIL_INDEX_MSG instead.
+ *
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, the current function returns.
+ */
+#define OV_ERR_FAIL_COND(m_cond) \
+	if (OV_unlikely(m_cond)) { \
+		::OpenVic::Logger::error("Condition \"" _OV_STR(m_cond) "\" is true."); \
+		return; \
+	} else \
+		((void)0)
+
+/**
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, prints `m_msg` and the current function returns.
+ *
+ * If checking for null use ERR_FAIL_NULL_MSG instead.
+ * If checking index bounds use ERR_FAIL_INDEX_MSG instead.
+ */
+#define OV_ERR_FAIL_COND_MSG(m_cond, m_msg) \
+	if (OV_unlikely(m_cond)) { \
+		::OpenVic::Logger::error("Condition \"" _OV_STR(m_cond) "\" is true.", m_msg); \
+		return; \
+	} else \
+		((void)0)
+
+/**
+ * Try using `ERR_FAIL_COND_V_MSG`.
+ * Only use this macro if there is no sensible error message.
+ * If checking for null use ERR_FAIL_NULL_V_MSG instead.
+ * If checking index bounds use ERR_FAIL_INDEX_V_MSG instead.
+ *
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, the current function returns `m_retval`.
+ */
+#define OV_ERR_FAIL_COND_V(m_cond, m_retval) \
+	if (OV_unlikely(m_cond)) { \
+		::OpenVic::Logger::error( \
+			"Condition \"" _OV_STR(m_cond) "\" is true. Returning: " _OV_STR(m_retval) \
+		); \
+		return m_retval; \
+	} else \
+		((void)0)
+
+/**
+ * Ensures `m_cond` is false.
+ * If `m_cond` is true, prints `m_msg` and the current function returns `m_retval`.
+ *
+ * If checking for null use ERR_FAIL_NULL_V_MSG instead.
+ * If checking index bounds use ERR_FAIL_INDEX_V_MSG instead.
+ */
+#define OV_ERR_FAIL_COND_V_MSG(m_cond, m_retval, m_msg) \
+	if (OV_unlikely(m_cond)) { \
+		::OpenVic::Logger::error( \
+			"Condition \"" _OV_STR(m_cond) "\" is true. Returning: " _OV_STR(m_retval), m_msg \
+		); \
+		return m_retval; \
+	} else \
+		((void)0)