Add a basic implementation for the Zig port with proper testings (#478)

* Add a basic implementation for the Zig port with proper testings

* Fix an accidental change in Rust tests

* Update FindZig.cmake

* Update CMakeLists.txt

* Update metacall-configure.ps1

* Update metacall-configure.sh

* Update CMakeLists.txt

---------

Co-authored-by: Vicente Eduardo Ferrer Garcia <[email protected]>

cmake/FindZig.cmake

@@ -0,0 +1,47 @@
+#
+#	CMake Find Zig by Parra Studios
+#	CMake script to find Zig compiler and tools.
+#
+#	Copyright (C) 2016 - 2024 Vicente Eduardo Ferrer Garcia <[email protected]>
+#
+#	Licensed under the Apache License, Version 2.0 (the "License");
+#	you may not use this file except in compliance with the License.
+#	You may obtain a copy of the License at
+#
+#		http://www.apache.org/licenses/LICENSE-2.0
+#
+#	Unless required by applicable law or agreed to in writing, software
+#	distributed under the License is distributed on an "AS IS" BASIS,
+#	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#	See the License for the specific language governing permissions and
+#	limitations under the License.
+#
+
+# Find Zig executables and paths
+#
+# Zig_FOUND - True if Zig was found
+# Zig_COMPILER_EXECUTABLE - Zig compiler executable path
+
+# Options
+#
+# Zig_CMAKE_DEBUG - Print the debug information and all constants values
+
+option(Zig_CMAKE_DEBUG "Show full output of the Zig related commands for debugging." OFF)
+
+find_program(Zig_COMPILER_EXECUTABLE zig
+)
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(Zig
+	FOUND_VAR Zig_FOUND
+)
+
+mark_as_advanced(
+	Zig_FOUND
+	Zig_COMPILER_EXECUTABLE
+)
+
+if(Zig_CMAKE_DEBUG)
+	message(STATUS "Zig_COMPILER_EXECUTABLE: ${Zig_COMPILER_EXECUTABLE}")
+endif()

source/ports/CMakeLists.txt

@@ -42,6 +42,7 @@ option(OPTION_BUILD_PORTS_R		"Build R port."					OFF)
 option(OPTION_BUILD_PORTS_RB	"Build Ruby port."				ON)
 option(OPTION_BUILD_PORTS_RS	"Build Rust port."				OFF)
 option(OPTION_BUILD_PORTS_TS	"Build TypeScript port."		OFF)
+option(OPTION_BUILD_PORTS_ZIG	"Build Zig port."				OFF)
 
 #
 # Port languages (Standalone)
@@ -52,6 +53,7 @@ add_subdirectory(node_port)
 add_subdirectory(py_port)
 add_subdirectory(go_port)
 add_subdirectory(rs_port)
+add_subdirectory(zig_port)
 
 #
 # External dependencies

source/ports/zig_port/.gitignore

@@ -0,0 +1,6 @@
+# Zig cache and binary directories
+zig-cache
+zig-out
+
+# Python loader cache in testings
+src/tests/__pycache__

source/ports/zig_port/CMakeLists.txt

@@ -0,0 +1,47 @@
+# Check if this port is enabled
+if(NOT OPTION_BUILD_PORTS OR NOT OPTION_BUILD_PORTS_ZIG)
+	return()
+endif()
+
+#
+# Port name and options
+#
+
+find_package(Zig)
+
+if(NOT Zig_FOUND)
+	message(SEND_ERROR "Zig not found")
+	return()
+endif()
+
+# Target name
+set(target zig_port)
+
+# Exit here if required dependencies are not met
+message(STATUS "Port ${target}")
+
+# Generate bindings
+add_custom_target(TARGET ${target}
+	COMMAND ${Zig_COMPILER_EXECUTABLE} translate-c metacall.h > metacall-bindings.zig -lc -I ${CMAKE_SOURCE_DIR}/source/metacall/include -I ${CMAKE_BINARY_DIR}/source/metacall/include -I ${CMAKE_BINARY_DIR}/source/include
+	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+#
+# Define test
+#
+
+add_test(NAME ${target}
+	COMMAND ${Zig_COMPILER_EXECUTABLE} build test
+	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+set_property(TEST ${target}
+	PROPERTY LABELS ${target}
+)
+
+include(TestEnvironmentVariables)
+
+test_environment_variables(${target}
+	""
+	${TESTS_ENVIRONMENT_VARIABLES}
+)