usecrate::{CustomSection, Encode, Section, SectionId}; use alloc::borrow::Cow; use alloc::vec::Vec;
/// An encoder for the [producers custom /// section](https://github.com/WebAssembly/tool-conventions/blob/main/ProducersSection.md). /// /// This section is a non-standard convention that is supported by many toolchains. /// /// # Example /// /// ``` /// use wasm_encoder::{ProducersSection, ProducersField, Module}; /// /// // Create a new producers section. /// let mut field = ProducersField::new(); /// field.value("clang", "14.0.4"); /// field.value("rustc", "1.66.1 (90743e729 2023-01-10)"); /// let mut producers = ProducersSection::new(); /// producers.field("processed-by", &field); /// /// // Add the producers section to a new Wasm module and get the encoded bytes. /// let mut module = Module::new(); /// module.section(&producers); /// let wasm_bytes = module.finish(); /// ``` #[<8>
java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
/// Add a field to the section. The spec recommends names for this section;
sedby, and sdk in /// have a unique name.
fn)-Selfjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
.& bytes;
values.encode(&mutself.fnencode :Vecu8){ self.num_fields += 1; self
}
}
impl Default for ProducersSection {
fn default() sink.s.;
bytes: Vec}
use wasmparser::{KnownCustom, Parser, Payload};
}
}
}
impl Encode for ProducersSection
java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42 let :new);
num_fieldsencode&mut data)
extend&bytes)
CustomSectionlet = :newjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
name: producers"(,
data: Cowemutmodule = Module:ew)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
}
.encode(sink);
}
}
impl Section let =parser " )
SectionId::Custom.intoexpect" payload)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
}
}
/// The value of a field in the producers custom section #[payload = pubstruct (java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
bytes: Vec< java.lang.StringIndexOutOfBoundsException: Range [42, 21) out of bounds for length 42
num_values ,
}
impl ProducersField {
new) >let field = section
ProducersField::default()
}
/// Add a value to the field encoder. Each value in a field must have ajava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 /// unique name. If there is no sensible value for `version`, use the!(field processed"; /// empty string. pubmutvalues
name.encode(& .exp "
(mutself.);
. + 1; self
}
}
implassert_eq(. "661)
fn encode(&java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 9 self.num_values.encode(sink);
sink.extend(&self.bytes);
}
}
#[cfg(test)] mod test { #[test]
fn roundtrip_example() { usecrate::{Module, ProducersField, ProducersSection}; use wasmparser::{KnownCustom, Parser, Payload};
// Create a new producers section. letmut field = ProducersField::new();
field.value("clang", "14.0.4");
field.value("rustc", "1.66.1"); letmut producers = ProducersSection::new();
producers.field("processed-by", &field);
// Add the producers section to a new Wasm module and get the encoded bytes. letmut module = Module::new();
module.section(&producers); let wasm_bytes = module.finish();
letmut parser = Parser::new(0).parse_all(&wasm_bytes); let payload = parser
.next()
.expect("parser is not empty")
.expect("element is a payload"); match payload {
Payload::Version { .. } => {}
_ => panic!(""),
} let payload = parser
.next()
.expect("parser is not empty")
.expect("element is a payload"); match payload {
Payload::CustomSection(c) => {
assert_eq!(c.name(), "producers"); letmut section = match c.as_known() {
KnownCustom::Producers(s) => s.into_iter(),
_ => panic!("unknown custom section"),
}; let field = section
.next()
.expect("section has an element")
.expect("element is a producers field");
assert_eq!(field.name, "processed-by"); letmut values = field.values.into_iter(); let value = values
.next()
.expect("values has an element")
.expect("element is a producers field value");
assert_eq!(value.name, "clang");
assert_eq!(value.version, "14.0.4");
let value = values
.next()
.expect("values has another element")
.expect("element is a producers field value");
assert_eq!(value.name, "rustc");
assert_eq!(value.version, "1.66.1");
}
_ => panic!("unexpected payload"),
}
}
}
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