From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/rust/wasm.rs | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 js/src/rust/wasm.rs (limited to 'js/src/rust/wasm.rs') diff --git a/js/src/rust/wasm.rs b/js/src/rust/wasm.rs new file mode 100644 index 0000000000..73c7057b66 --- /dev/null +++ b/js/src/rust/wasm.rs @@ -0,0 +1,53 @@ +/* Copyright 2020 Mozilla Foundation + * + * 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. + */ + +#[no_mangle] +pub unsafe extern "C" fn wasm_text_to_binary( + text: *const u16, + text_len: usize, + out_bytes: *mut *mut u8, + out_bytes_len: *mut usize, + out_error: *mut *mut u8, + out_error_len: *mut usize, +) -> bool { + let text_slice = std::slice::from_raw_parts(text, text_len); + let text = String::from_utf16_lossy(text_slice); + + match text_to_binary(&text) { + Ok(bytes) => { + let bytes_box = bytes.into_boxed_slice(); + let bytes_slice = Box::leak(bytes_box); + out_bytes.write(bytes_slice.as_mut_ptr()); + out_bytes_len.write(bytes_slice.len()); + true + } + Err(error) => { + let error = Box::leak(format!("{}\0", error).into_boxed_str()); + out_error.write(error.as_mut_ptr()); + out_error_len.write(error.len()); + false + } + } +} + +fn text_to_binary(text: &str) -> Result, wast::Error> { + let mut lexer = wast::lexer::Lexer::new(text); + // The 'names.wast' spec test has confusable unicode, so disable detection. + // This protection is not very useful for a shell testing function anyways. + lexer.allow_confusing_unicode(true); + let buf = wast::parser::ParseBuffer::new_with_lexer(lexer)?; + let mut ast = wast::parser::parse::(&buf)?; + return ast.encode(); +} -- cgit v1.2.3