Several improvements to the Visual C project.

gravity_visualstudio/gravity.sln

@@ -0,0 +1,28 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Express 2013 for Windows Desktop
+VisualStudioVersion = 12.0.31101.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "GravityLang", "gravity.vcxproj", "{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Debug|Win32.ActiveCfg = Debug|Win32
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Debug|Win32.Build.0 = Debug|Win32
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Debug|x64.ActiveCfg = Debug|x64
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Debug|x64.Build.0 = Debug|x64
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Release|Win32.ActiveCfg = Release|Win32
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Release|Win32.Build.0 = Release|Win32
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Release|x64.ActiveCfg = Release|x64
+		{EC12BE0A-025E-4168-9D2D-419A18CB2EF5}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

gravity_visualstudio/gravity.vcxproj

@@ -30,26 +30,26 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v120</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v120</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v120</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v120</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -74,22 +74,22 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <LinkIncremental>true</LinkIncremental>
     <OutDir>$(SolutionDir)bin\</OutDir>
-    <IncludePath>$(ProjectDir);$(SolutionDir)src\compiler\;$(SolutionDir)src\utils\;$(SolutionDir)src\shared\;$(SolutionDir)src\runtime\;$(IncludePath)</IncludePath>
+    <IncludePath>$(ProjectDir);$(ProjectDir)..\src\utils;$(ProjectDir)..\src\shared;$(ProjectDir)..\src\runtime;$(ProjectDir)..\src\optionals;$(ProjectDir)..\src\compiler;$(IncludePath)</IncludePath>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <LinkIncremental>true</LinkIncremental>
     <OutDir>$(SolutionDir)bin\</OutDir>
-    <IncludePath>$(ProjectDir);$(SolutionDir)src\compiler\;$(SolutionDir)src\utils\;$(SolutionDir)src\shared\;$(SolutionDir)src\runtime\;$(IncludePath)</IncludePath>
+    <IncludePath>$(ProjectDir);$(ProjectDir)..\src\utils;$(ProjectDir)..\src\shared;$(ProjectDir)..\src\runtime;$(ProjectDir)..\src\optionals;$(ProjectDir)..\src\compiler;$(IncludePath)</IncludePath>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\</OutDir>
-    <IncludePath>$(ProjectDir);$(SolutionDir)src\compiler\;$(SolutionDir)src\utils\;$(SolutionDir)src\shared\;$(SolutionDir)src\runtime\;$(IncludePath)</IncludePath>
+    <IncludePath>$(ProjectDir);$(ProjectDir)..\src\utils;$(ProjectDir)..\src\shared;$(ProjectDir)..\src\runtime;$(ProjectDir)..\src\optionals;$(ProjectDir)..\src\compiler;$(IncludePath)</IncludePath>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <LinkIncremental>false</LinkIncremental>
     <OutDir>$(SolutionDir)bin\</OutDir>
-    <IncludePath>$(ProjectDir);$(SolutionDir)src\compiler\;$(SolutionDir)src\utils\;$(SolutionDir)src\shared\;$(SolutionDir)src\runtime\;$(IncludePath)</IncludePath>
+    <IncludePath>$(ProjectDir);$(ProjectDir)..\src\utils;$(ProjectDir)..\src\shared;$(ProjectDir)..\src\runtime;$(ProjectDir)..\src\optionals;$(ProjectDir)..\src\compiler;$(IncludePath)</IncludePath>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
@@ -181,6 +181,8 @@
     <ClInclude Include="..\src\compiler\gravity_symboltable.h" />
     <ClInclude Include="..\src\compiler\gravity_token.h" />
     <ClInclude Include="..\src\compiler\gravity_visitor.h" />
+    <ClInclude Include="..\src\optionals\gravity_math.h" />
+    <ClInclude Include="..\src\optionals\gravity_optionals.h" />
     <ClInclude Include="..\src\runtime\gravity_core.h" />
     <ClInclude Include="..\src\runtime\gravity_vm.h" />
     <ClInclude Include="..\src\runtime\gravity_vmmacros.h" />
@@ -209,6 +211,7 @@
     <ClCompile Include="..\src\compiler\gravity_symboltable.c" />
     <ClCompile Include="..\src\compiler\gravity_token.c" />
     <ClCompile Include="..\src\compiler\gravity_visitor.c" />
+    <ClCompile Include="..\src\optionals\gravity_math.c" />
     <ClCompile Include="..\src\runtime\gravity_core.c" />
     <ClCompile Include="..\src\runtime\gravity_vm.c" />
     <ClCompile Include="..\src\shared\gravity_hash.c" />

gravity_visualstudio/gravity.vcxproj.filters

@@ -37,6 +37,9 @@
     <Filter Include="Source Files\runtime">
       <UniqueIdentifier>{f749a6f3-c597-4f03-84cd-f658262caebd}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Source Files\opt">
+      <UniqueIdentifier>{3e8f2185-8296-463c-86de-94c8a5ac3f4b}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\compiler\debug_macros.h">
@@ -120,6 +123,12 @@
     <ClInclude Include="unistd.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\optionals\gravity_math.h">
+      <Filter>Source Files\opt</Filter>
+    </ClInclude>
+    <ClInclude Include="..\src\optionals\gravity_optionals.h">
+      <Filter>Source Files\opt</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\src\compiler\gravity_ast.c">
@@ -182,5 +191,8 @@
     <ClCompile Include="..\src\runtime\gravity_vm.c">
       <Filter>Source Files\runtime</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\optionals\gravity_math.c">
+      <Filter>Source Files\opt</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

src/shared/gravity_memory.h

@@ -11,8 +11,8 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <stdbool.h>
-#include <strings.h>
 
 // memory debugger must be turned on ONLY with Xcode GuardMalloc ON
 #define GRAVITY_MEMORY_DEBUG            0