lvm_class/member/
method.rs

1use crate::attribute::method::MethodAttribute;
2use crate::constant_pool::ConstantPool;
3use crate::error::ClassFormatErr;
4use crate::flags::MethodFlags;
5use lvm_common::utils::cursor::ByteCursor;
6
7/// A method in a class file.
8///
9/// https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-4.html#jvms-4.6
10#[derive(Debug, Clone)]
11pub struct MethodInfo {
12    pub access_flags: MethodFlags,
13    pub name_index: u16,
14    pub descriptor_index: u16,
15    pub attributes: Vec<MethodAttribute>,
16}
17
18impl<'a> MethodInfo {
19    pub(crate) fn read(
20        constant_pool: &ConstantPool,
21        cursor: &mut ByteCursor<'a>,
22    ) -> Result<Self, ClassFormatErr> {
23        let access_flags = MethodFlags::new(cursor.u16()?);
24        let name_index = cursor.u16()?;
25        let descriptor_index = cursor.u16()?;
26        let attribute_count = cursor.u16()?;
27        let mut attributes = Vec::with_capacity(attribute_count as usize);
28        for _ in 0..attribute_count {
29            attributes.push(MethodAttribute::read(constant_pool, cursor)?);
30        }
31        Ok(Self {
32            access_flags,
33            name_index,
34            descriptor_index,
35            attributes,
36        })
37    }
38}
lvm_class/member/method.rs

lvm_class/member/
method.rs
