From e3bba294b4b08887851382573a7f2c73545e85fb Mon Sep 17 00:00:00 2001
From: Alexander Karatarakis <alkarata@microsoft.com>
Date: Mon, 13 Mar 2017 16:04:29 -0700
Subject: Introduce LINE_INFO macro + struct

---
 toolsrc/include/vcpkg_Checks.h | 16 ++++++++++++++++
 toolsrc/src/vcpkg_Checks.cpp   |  8 ++++++++
 2 files changed, 24 insertions(+)

diff --git a/toolsrc/include/vcpkg_Checks.h b/toolsrc/include/vcpkg_Checks.h
index 23869f35f..c9293b0bb 100644
--- a/toolsrc/include/vcpkg_Checks.h
+++ b/toolsrc/include/vcpkg_Checks.h
@@ -2,6 +2,22 @@
 
 #include "vcpkg_Strings.h"
 
+namespace vcpkg
+{
+    struct LineInfo
+    {
+        int line_number;
+        const char* file_name;
+
+        constexpr LineInfo() : line_number(0), file_name(nullptr) {}
+        constexpr LineInfo(const int line_number, const char* file_name) : line_number(line_number), file_name(file_name) {}
+
+        std::string toString() const;
+    };
+}
+
+#define LINE_INFO vcpkg::LineInfo(__LINE__, __FILE__)
+
 namespace vcpkg::Checks
 {
     __declspec(noreturn) void unreachable();
diff --git a/toolsrc/src/vcpkg_Checks.cpp b/toolsrc/src/vcpkg_Checks.cpp
index 02d3480a2..caffb1a8f 100644
--- a/toolsrc/src/vcpkg_Checks.cpp
+++ b/toolsrc/src/vcpkg_Checks.cpp
@@ -2,6 +2,14 @@
 #include "vcpkg_Checks.h"
 #include "vcpkg_System.h"
 
+namespace vcpkg
+{
+    std::string LineInfo::toString() const
+    {
+        return Strings::format("%s(%d)", this->file_name, this->line_number);
+    }
+}
+
 namespace vcpkg::Checks
 {
     __declspec(noreturn) void unreachable()
-- 
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