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interesting stuff
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‎src/native/corehost/browser/CMakeLists.txt‎

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# Licensed to the .NET Foundation under one or more agreements.
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# The .NET Foundation licenses this file to you under the MIT license.
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project(browserhost)
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set(DOTNET_PROJECT_NAME "browserhost")
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include_directories(..)
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include_directories(../hostmisc)
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#WASMTODO include_directories(../hostpolicy)
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#WASMTODO include_directories(../json)
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include_directories(${CLR_SRC_NATIVE_DIR}/libs/System.JavaScript)
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include_directories(${CLR_SRC_NATIVE_DIR}/libs/System.Runtime.InteropServices.JavaScript)
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include_directories(${CLR_SRC_NATIVE_DIR}/libs/System.IO.Compression.Native)
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include_directories(${CLR_SRC_NATIVE_DIR}/libs/Common)
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include_directories(${CLR_ARTIFACTS_OBJ_DIR}) # Generated version files
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add_subdirectory(../hostmisc hostmisc)
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configure_file(${CLR_SRC_NATIVE_DIR}/corehost/configure.h.in ${GENERATED_INCLUDE_DIR}/corehost/configure.h)
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target_include_directories(hostmisc_interface INTERFACE ${GENERATED_INCLUDE_DIR}/corehost)
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set(SOURCES
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./browserhost.cpp
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native.rc
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)
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set(HEADERS
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)
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add_compile_definitions(FEATURE_APPHOST)
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add_definitions(-DFEATURE_APPHOST=1)
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add_definitions(-DFEATURE_STATIC_HOST=1)
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add_executable(browserhost ${SOURCES})
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set_target_properties(browserhost PROPERTIES OUTPUT_NAME dotnet.native)
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set(CMAKE_EXECUTABLE_SUFFIX ".js")
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install(TARGETS browserhost DESTINATION corehost COMPONENT runtime)
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install(FILES ${CMAKE_CURRENT_BINARY_DIR}/dotnet.native.wasm DESTINATION corehost COMPONENT runtime)
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include(configure.cmake)
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LIST(APPEND NATIVE_LIBS
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coreclr_static
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System.JavaScript-Static
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System.Runtime.InteropServices.JavaScript-Static
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System.Native-Static
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System.Globalization.Native-Static
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System.IO.Compression.Native-Static
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nativeresourcestring
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gcinfo
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# WASMTODO do not link icudata and download shard at runtime
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# WASMTODO respect $(InvariantTimezone)
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# System.Native.TimeZoneData.Invariant
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System.Native.TimeZoneData
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)
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# WASMTODO set(RUNTIMEINFO_LIB runtimeinfo)
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target_compile_options(browserhost PRIVATE -fwasm-exceptions)
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set_target_properties(browserhost PROPERTIES
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LINK_DEPENDS "${CLR_SRC_NATIVE_DIR}/libs/System.JavaScript/System.JavaScript.extpost.js;${CLR_SRC_NATIVE_DIR}/libs/System.JavaScript/System.JavaScript.js;${CLR_SRC_NATIVE_DIR}/libs/System.Runtime.InteropServices.JavaScript/System.Runtime.InteropServices.JavaScript.js;"
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LINK_FLAGS "--js-library ${CLR_SRC_NATIVE_DIR}/libs/System.JavaScript/System.JavaScript.js --js-library ${CLR_SRC_NATIVE_DIR}/libs/System.Runtime.InteropServices.JavaScript/System.Runtime.InteropServices.JavaScript.js --extern-post-js ${CLR_SRC_NATIVE_DIR}/libs/System.JavaScript/System.JavaScript.extpost.js"
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RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
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# WASMTODO linker options for NodeJs for now
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# WASMTODO -Oz -sVERBOSE
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target_link_options(browserhost PRIVATE
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-fwasm-exceptions
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-sEXPORTED_RUNTIME_METHODS=FS
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-sEXIT_RUNTIME=1
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-sINITIAL_MEMORY=134217728
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-sSTACK_SIZE=5MB
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-sMODULARIZE=1
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-sEXPORT_ES6=1
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-s EXPORT_NAME=createDotnetRuntime
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-lnoderawfs.js
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-lnodefs.js
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-Wl,-error-limit=0)
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target_link_libraries(
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browserhost
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PRIVATE
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hostmisc
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clrinterpreter
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${NATIVE_LIBS}
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${START_WHOLE_ARCHIVE}
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${RUNTIMEINFO_LIB}
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${END_WHOLE_ARCHIVE}
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)
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# TODOWASM: this is temporary NodeJS host until we TypeScript projects
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set(TEST_ASSETS
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${CLR_ARTIFACTS_OBJ_DIR}/System.JavaScript/index.html
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${CLR_ARTIFACTS_OBJ_DIR}/System.JavaScript/main.mjs
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${CLR_ARTIFACTS_OBJ_DIR}/System.JavaScript/dotnet.js
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${CLR_ARTIFACTS_OBJ_DIR}/System.JavaScript/dotnet.runtime.js
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)
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install(FILES ${TEST_ASSETS} DESTINATION corehost COMPONENT runtime)

‎src/native/corehost/browser/browserhost.cpp‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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//
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#include <cstdio>
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#include <vector>
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#include <emscripten.h>
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#include <pal.h>
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#include <minipal/utils.h>
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#include <host_runtime_contract.h>
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static void log_error_info(const char* line)
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{
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std::fprintf(stderr, "log error: %s\n", line);
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}
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// The current CoreCLR instance details.
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static void* CurrentClrInstance;
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static unsigned int CurrentAppDomainId;
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typedef void (*coreclr_error_writer_callback_fn)(const char* line);
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extern "C"
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{
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pal::hresult_t coreclr_initialize(
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const char* exePath,
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const char* appDomainFriendlyName,
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int propertyCount,
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const char** propertyKeys,
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const char** propertyValues,
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void** hostHandle,
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unsigned int* domainId);
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pal::hresult_t coreclr_shutdown_2(
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void* hostHandle,
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unsigned int domainId,
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int* latchedExitCode);
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pal::hresult_t coreclr_execute_assembly(
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void* hostHandle,
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unsigned int domainId,
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int argc,
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const char** argv,
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const char* managedAssemblyPath,
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unsigned int* exitCode);
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pal::hresult_t coreclr_create_delegate(
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void* hostHandle,
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unsigned int domainId,
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const char* entryPointAssemblyName,
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const char* entryPointTypeName,
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const char* entryPointMethodName,
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void** delegate);
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pal::hresult_t coreclr_set_error_writer(
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coreclr_error_writer_callback_fn error_writer);
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const void* SystemResolveDllImport(const char* name);
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const void* SystemJSResolveDllImport(const char* name);
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const void* SystemJSInteropResolveDllImport(const char* name);
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const void* GlobalizationResolveDllImport(const char* name);
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const void* CompressionResolveDllImport(const char* name);
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}
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bool bundle_probe(const char* path, int64_t* offset, int64_t* size, int64_t* compressedSize)
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{
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// WASMTODO: Not implemented
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return false;
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}
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bool external_assembly_probe(const char* path, /*out*/ void **data_start, /*out*/ int64_t* size)
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{
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// WASMTODO: Not implemented
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return false;
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}
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size_t get_runtime_property(const char* key, char* value_buffer, size_t value_buffer_size, void* contract_context)
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{
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// WASMTODO: Not implemented
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return -1;
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}
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const void* pinvoke_override(const char* library_name, const char* entry_point_name)
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{
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if (strcmp(library_name, "libSystem.Native") == 0)
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{
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return SystemResolveDllImport(entry_point_name);
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}
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if (strcmp(library_name, "libSystem.JavaScript") == 0)
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{
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return SystemJSResolveDllImport(entry_point_name);
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}
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if (strcmp(library_name, "libSystem.Runtime.InteropServices.JavaScript") == 0)
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{
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return SystemJSInteropResolveDllImport(entry_point_name);
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}
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if (strcmp(library_name, "libSystem.Globalization.Native") == 0)
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{
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return GlobalizationResolveDllImport(entry_point_name);
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}
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if (strcmp(library_name, "libSystem.IO.Compression.Native") == 0)
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{
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return CompressionResolveDllImport(entry_point_name);
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}
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return nullptr;
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}
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static int run()
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{
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pal::string_t exe_path;
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pal::string_t tpa;
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pal::string_t app;
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pal::getenv("CWD", &exe_path);
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pal::getenv("TRUSTED_PLATFORM_ASSEMBLIES", &tpa);
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pal::getenv("APP", &app);
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const pal::string_t app_domain_name = "corehost";
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// Set base initialization properties.
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std::vector<const char*> propertyKeys;
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std::vector<const char*> propertyValues;
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propertyKeys.push_back(HOST_PROPERTY_TRUSTED_PLATFORM_ASSEMBLIES);
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propertyValues.push_back(tpa.c_str());
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propertyKeys.push_back(HOST_PROPERTY_NATIVE_DLL_SEARCH_DIRECTORIES);
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propertyValues.push_back(exe_path.c_str());
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host_runtime_contract host_contract = { sizeof(host_runtime_contract), nullptr };
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host_contract.get_runtime_property = &get_runtime_property;
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host_contract.bundle_probe = &bundle_probe;
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host_contract.pinvoke_override = &pinvoke_override;
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host_contract.external_assembly_probe = &external_assembly_probe;
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pal::char_t buffer[STRING_LENGTH("0xffffffffffffffff")];
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pal::snwprintf(buffer, ARRAY_SIZE(buffer), _X("0x%zx"), (size_t)(&host_contract));
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propertyKeys.push_back(HOST_PROPERTY_RUNTIME_CONTRACT);
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propertyValues.push_back(buffer);
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coreclr_set_error_writer(log_error_info);
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// printf("BEGIN: call coreclr_initialize\n");
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int retval = coreclr_initialize(exe_path.c_str(), app_domain_name.c_str(), (int)propertyKeys.size(), propertyKeys.data(), propertyValues.data(), &CurrentClrInstance, &CurrentAppDomainId);
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// printf("END: call coreclr_initialize\n");
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if (retval < 0)
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{
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std::fprintf(stderr, "coreclr_initialize failed - Error: 0x%08x\n", retval);
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return -1;
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}
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else
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{
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// printf("coreclr_initialize succeeded - retval: 0x%08x\n", retval);
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}
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int exit_code;
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// printf("BEGIN: call coreclr_execute_assembly\n");
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retval = coreclr_execute_assembly(CurrentClrInstance, CurrentAppDomainId, 0, nullptr, app.c_str(), (uint32_t*)&exit_code);
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// printf("END: call coreclr_execute_assembly\n");
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if (retval < 0)
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{
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std::fprintf(stderr, "coreclr_execute_assembly failed - Error: 0x%08x\n", retval);
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return -1;
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}
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int latched_exit_code = 0;
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// printf("BEGIN: call coreclr_shutdown_2\n");
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retval = coreclr_shutdown_2(CurrentClrInstance, CurrentAppDomainId, &latched_exit_code);
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// printf("END: call coreclr_shutdown_2\n");
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if (retval < 0)
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{
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std::fprintf(stderr, "coreclr_shutdown_2 failed - Error: 0x%08x\n", retval);
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exit_code = -1;
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}
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return retval;
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}
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int main()
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{
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int retval = run();
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return retval;
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}

‎src/native/corehost/browser/main.mjs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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import { dotnet, exit } from './dotnet.js'
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import fs from 'fs';
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try {
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// TODOWASM: this is temporary NodeJS host until we have proper host
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const env = {};
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for (const [key, value] of Object.entries(process.env)) {
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env[key] = value;
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}
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const cwd = process.cwd().replaceAll('\\', '/').replace(/[a-zA-Z]:[\\/]/, '/'); // unix vs windows, remove drive letter
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const app = process.argv[2] || "HelloWorld.dll";
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const args = process.argv.slice(2);
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const dlls = fs.readdirSync(cwd).filter(f => f.endsWith('.dll'));
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const tpa = dlls.map(f => `${cwd}/${f}`).join(':');
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env["CWD"] = cwd;
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env["ARGS"] = args;
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env["APP"] = `${cwd}/${app}`;
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env["TRUSTED_PLATFORM_ASSEMBLIES"] = tpa;
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await dotnet
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.withEnvironmentVariables(env)
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.run();
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}
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catch (err) {
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console.error(err);
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exit(2, err);
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}
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‎src/native/libs/System.JavaScript.Loader/dotnet.js‎

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//! Licensed to the .NET Foundation under one or more agreements.
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//! The .NET Foundation licenses this file to you under the MIT license.
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// TODOWASM: this is dummy implementation to allow build to succeed
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/* eslint-disable no-console */
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/* eslint-disable space-before-function-paren */
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import { initialize as initializeRuntime } from "./dotnet.runtime.js"; // TODOWASM: this will be dynamic import
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import { initialize as initializeNative } from "./dotnet.native.js"; // TODOWASM: this will be dynamic import
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const config = {
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environmentVariables: {}
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};
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const Module = {
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};
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const runtimeApi = {
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Module,
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exit,
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};
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const dotnetInternals = {
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config,
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runtimeApi,
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};
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Module.dotnetInternals = dotnetInternals;
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export function exit(exit_code, reason) {
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const reasonStr = reason ? (reason.stack ? reason.stack || reason.message : reason.toString()) : "";
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console.error(`Exit with code ${exit_code} ${reason ? "and reason: " + reasonStr : ""}`);
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process.exit(exit_code);
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}
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export const dotnet = {
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withEnvironmentVariables: (env) => {
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Object.assign(config.environmentVariables, env);
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return dotnet;
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},
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run: async () => {
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await initializeRuntime(dotnetInternals);
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await initializeNative(dotnetInternals);
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return runtimeApi;
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}
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};

‎src/native/libs/System.JavaScript.Runtime/dotnet.runtime.js‎

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//! Licensed to the .NET Foundation under one or more agreements.
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//! The .NET Foundation licenses this file to you under the MIT license.
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// TODOWASM: this is dummy implementation to allow build to succeed
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/* eslint-disable @typescript-eslint/no-unused-vars */
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export async function initialize(internalApis) {
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return Promise.resolve();
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}

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