float-pigment-css

The CSS parser for the float-pigment project.

This is a crate of the float-pigment project. See its documentation for details.

Compile to WebAssembly

In most cases this module is a dependency for high-level modules.

But more, this module can be compiled to WebAssembly itself, and can be called from JavaScript.

With wasm-pack installed globally:

wasm-pack build float-pigment-css --target nodejs --features nodejs-package

Generate C++ Headers

This module contains C++ bindings, and it generates a C++ header file for visiting from C++. However, the C++ header should be updated manually.

To update the C++ header, make sure installed:

• cargo-expand

The C++ header update command:

cargo run --bin float_pigment_css_cpp_binding_gen_tool --features build-cpp-header

Compatibility Checks

Some serde structs and enums needs compatibility checks.

This is because the serialize_bincode and deserialize_bincode forbid some changes to keep compatibilities across versions. It means that structs and enums can only add new fields but not modify fields. This is done by compare the current version of struct/enum definitions and the corresponding previous one. The previous struct/enum definitions are stored in the compile_cache dir.

For new struct/enum that needs across-version compatibilities, CompatibilityStructCheck and CompatibilityEnumCheck macros must be derived. When struct/enum name conflicts, compatibility_struct_check can be used to specify a name prefix. For example:

#[derive(Serialize, Deserialize, CompatibilityEnumCheck)]
enum Name {
   None
}               

#[derive(Serialize, Deserialize, CompatibilityStructCheck)]
struct Hello {
    name: String
}

#[compatibility_struct_check(mod_name)]
#[derive(Serialize, Deserialize)]
struct Hello {
    name: String
}

To update the compile_cache, run cargo run --bin float_pigment_css_update_version --features compile_cache. (This will be automatically done by the publish script.)