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Wasm: Clarify where magic constant 5 comes from

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This commit is contained in:
Brian Carroll 2022-01-15 14:43:02 +00:00
parent e37ca971bd
commit 9290d3ad5c
2 changed files with 24 additions and 17 deletions
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9
compiler/gen_wasm/src/wasm_module/sections.rs
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@ -9,7 +9,9 @@ use super::dead_code::{
};
use super::linking::RelocationEntry;
use super::opcodes::OpCode;
use super::serialize::{parse_u32_or_panic, SerialBuffer, Serialize, SkipBytes};
use super::serialize::{
parse_u32_or_panic, SerialBuffer, Serialize, SkipBytes, MAX_SIZE_ENCODED_U32,
};
use super::{CodeBuilder, ValueType};
/*******************************************************************
@ -38,7 +40,6 @@ pub enum SectionId {
DataCount = 12,
}
const MAX_SIZE_ENCODED_U32: usize = 5;
const MAX_SIZE_SECTION_HEADER: usize = std::mem::size_of::<SectionId>() + 2 * MAX_SIZE_ENCODED_U32;
pub trait Section<'a>: Sized {
@ -104,8 +105,8 @@ where
fn section_size(bytes: &[u8]) -> usize {
let id = 1;
let encoded_length = 5;
let encoded_count = 5;
let encoded_length = MAX_SIZE_ENCODED_U32;
let encoded_count = MAX_SIZE_ENCODED_U32;
id + encoded_length + encoded_count + bytes.len()
}