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improve lowlevel unwrapping

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Folkert 2022-07-08 22:13:13 +02:00
parent c0ace1ee0b
commit e8530eaca5
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12 changed files with 249 additions and 246 deletions
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10
crates/compiler/gen_wasm/src/low_level.rs
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@ -264,16 +264,19 @@ impl<'a> LowLevelCall<'a> {
}
StrFromInt => self.num_to_str(backend),
StrFromFloat => self.num_to_str(backend),
StrFromUtf8 => {
StrFromUtf8Range => {
/*
Low-level op returns a struct with all the data for both Ok and Err.
Roc AST wrapper converts this to a tag union, with app-dependent tag IDs.
fromUtf8C(output: *FromUtf8Result, arg: RocList, update_mode: UpdateMode) callconv(.C) void
output: *FromUtf8Result i32
arg: RocList i64, i32
start i32
count i32
update_mode: UpdateMode i32
*/
// loads arg, start, count
backend.storage.load_symbols_for_call(
backend.env.arena,
&mut backend.code_builder,
@ -283,9 +286,8 @@ impl<'a> LowLevelCall<'a> {
CallConv::Zig,
);
backend.code_builder.i32_const(UPDATE_MODE_IMMUTABLE);
backend.call_host_fn_after_loading_args(bitcode::STR_FROM_UTF8, 4, false);
backend.call_host_fn_after_loading_args(bitcode::STR_FROM_UTF8_RANGE, 5, false);
}
StrFromUtf8Range => self.load_args_and_call_zig(backend, bitcode::STR_FROM_UTF8_RANGE),
StrTrimLeft => self.load_args_and_call_zig(backend, bitcode::STR_TRIM_LEFT),
StrTrimRight => self.load_args_and_call_zig(backend, bitcode::STR_TRIM_RIGHT),
StrToUtf8 => self.load_args_and_call_zig(backend, bitcode::STR_TO_UTF8),