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Unify / simplify asc API (in browsers)

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This commit is contained in:
dcodeIO
2018-04-04 14:39:40 +02:00
parent acfef646ef
commit 5e20bed09a
9 changed files with 116 additions and 151 deletions
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59
lib/parse/assembly/index.ts
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@ -76,6 +76,34 @@ function readVarint64(): i64 {
return select<u64>(val | (~0 << shl), val, shl < 64 && (byt & 0x40) != 0);
}
function skipInitExpr(): void {
var op = readUint<u8>();
switch (op) {
case Opcode.i32_const: {
readVarint(32);
break;
}
case Opcode.i64_const: {
readVarint64();
break;
}
case Opcode.f32_const: {
readUint<u32>();
break;
}
case Opcode.f64_const: {
readUint64();
break;
}
case Opcode.get_global: {
readVaruint(32);
break;
}
default: unreachable(); // MVP
}
if (readUint<u8>() != Opcode.end) unreachable();
}
// Imported callbacks
declare function onSection(id: u32, offset: u32, length: u32, nameOffset: u32, nameLength: u32): bool;
declare function onType(index: u32, form: u32): void;
@ -257,32 +285,7 @@ export function parse(begin: usize, end: usize): void {
for (let i: u32 = 0; i < count; ++i) {
let type = readVarint(7) & 0x7f;
let mutability = readVaruint(1);
let op = readUint<u8>();
switch (op) {
case Opcode.i32_const: {
readVarint(32);
break;
}
case Opcode.i64_const: {
readVarint64();
break;
}
case Opcode.f32_const: {
readUint<u32>();
break;
}
case Opcode.f64_const: {
readUint64();
break;
}
case Opcode.get_global: {
readVaruint(32);
break;
}
default: unreachable();
}
op = readUint<u8>();
if (op != Opcode.end) unreachable();
skipInitExpr();
onGlobal(
glo_space_index++,
type,
@ -389,7 +392,9 @@ export function parse(begin: usize, end: usize): void {
off = payload_off + payload_len; // ignore errors
break;
}
case SectionId.Code: { // skip
case SectionId.Element:
case SectionId.Code:
case SectionId.Data: { // skip
off += payload_len;
break;
}