1 /* Copyright 2020 Mozilla Foundation
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 pub unsafe extern "C" fn wasm_text_to_binary(
20 out_bytes: *mut *mut u8,
21 out_bytes_len: *mut usize,
22 out_error: *mut *mut u8,
23 out_error_len: *mut usize,
25 let text_slice = std::slice::from_raw_parts(text, text_len);
26 let text = String::from_utf16_lossy(text_slice);
28 match text_to_binary(&text) {
30 let bytes_box = bytes.into_boxed_slice();
31 let bytes_slice = Box::leak(bytes_box);
32 out_bytes.write(bytes_slice.as_mut_ptr());
33 out_bytes_len.write(bytes_slice.len());
37 let error = Box::leak(format!("{}\0", error).into_boxed_str());
38 out_error.write(error.as_mut_ptr());
39 out_error_len.write(error.len());
45 fn text_to_binary(text: &str) -> Result<Vec<u8>, wast::Error> {
46 let mut lexer = wast::lexer::Lexer::new(text);
47 // The 'names.wast' spec test has confusable unicode, so disable detection.
48 // This protection is not very useful for a shell testing function anyways.
49 lexer.allow_confusing_unicode(true);
50 let buf = wast::parser::ParseBuffer::new_with_lexer(lexer)?;
51 let mut ast = wast::parser::parse::<wast::Wat>(&buf)?;