HLE Tool User Guide

Introduction

HLE (HyperlangExtension) is a tool for automatically generating interoperability code templates for Cangjie calling ArkTS or C language. The input of this tool is the interface declaration file of ArkTS or C language, such as files ending with .d.ts, .d.ets or .h, and the output is a cj file, which stores the generated interoperability code. If the generated code is a glue layer code from ArkTS to Cangjie, the tool will also output a json file containing all the information of the ArkTS file. For the conversion rules from ArkTS to Cangjie, please refer to: ArkTS Third-Party Module Generation Cangjie Glue Code Rules. For the conversion rules from C language to Cangjie, please refer to: C Language Conversion to Cangjie Glue Code Rules.

Instructions

Dependencies

This tool requires Node.js for execution:

Recommended version: v18.14.1 or higher. Lower versions may fail to parse certain ArkTS syntax, so using the latest version is advised.

How to Install Node.js

For example, use the following commands:

# Download and install nvm:
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash
# in lieu of restarting the shell
\. "$HOME/.nvm/nvm.sh"
# Download and install Node.js:
nvm install 22
# Verify the Node.js version:
node -v # Should print "v22.17.1".
nvm current # Should print "v22.17.1".
# Verify npm version:
npm -v # Should print "10.9.2".

This tool requires TypeScript and cjbind for execution:

After installing Node.js, use the following commands to install TypeScript and cjbind:
```
cd ${CANGJIE_HOME}/tools/dtsparser/
npm install
```

Parameter Meaning

Parameter	Meaning	Parameter Type	Description
`-i`	Absolute path of d.ts, d.ets or .h file input	Optional	Choose one from `-d` or both
`-r`	Absolute path of typescript compiler	Required	Used only when generating ArkTS Cangjie bindings
`-d`	Absolute path of the folder where d.ts, d.ets or .h file input is located	Optional	Choose one from `-i` or both
`-o`	Directory to save the output interoperability code	Optional	Output to the current directory by default
`-j`	Path to analyze d.t or d.ets files	Optional	Used only when generating ArkTS Cangjie bindings
`--module-name`	Custom generated Cangjie package name	Optional	NA
`--lib`	Generate third-party library code	Optional	Used only when generating ArkTS Cangjie bindings
`-c`	Generate C to Cangjie binding code	Optional	Used only when generating C language Cangjie bindings
`-b`	Specify the path of the cjbind binary	Optional	Used only when generating C language Cangjie bindings
`--clang-args`	Parameters that will be directly passed to clang	Optional	Used only when generating C language Cangjie bindings
`--no-detect-include-path`	Disable automatic include path detection	Optional	Used only when generating C language Cangjie bindings
`--help`	Help option	Optional	NA

Command Line

You can use the following command to generate ArkTS to Cangjie binding code:

hle -i /path/to/test.d.ts -o out –j ${CANGJIE_HOME}/tools/dtsparser/analysis.js --module-name="my_module"

In the Windows environment, the file directory currently does not support the symbol "\", only "/" is supported.

The command to generate C to Cangjie binding code is as follows:

hle -b ${CANGJIE_HOME}/tools/dtsparser/node_modules/.bin/cjbind -c --module-name="my_module" -d ./tests/c_cases -o ./tests/expected/c_module/ --clang-args="-I/usr/lib/llvm-20/lib/clang/20/include/"

The -b parameter is used to specify the path to the cjbind binary file. The cjbind download link is as follows:

The --clang-args parameter is directly passed to clang, and the -I option can be used within its value to specify header file search paths. System header file paths are searched automatically by the program, while user-defined header file paths need to be explicitly specified.