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Added support for mocking globals and tables by default

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This commit is contained in:
Syrus Akbary
2018-11-19 13:09:16 -08:00
parent 12dc70d497
commit 3b878620cc
2 changed files with 29 additions and 2 deletions
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29
src/webassembly/instance.rs
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@@ -117,6 +117,8 @@ pub struct DataPointers {
pub struct InstanceOptions {
// Shall we mock automatically the imported functions if they don't exist?
pub mock_missing_imports: bool,
pub mock_missing_globals: bool,
pub mock_missing_tables: bool,
pub isa: Box<TargetIsa>,
}
@@ -321,7 +323,17 @@ impl Instance {
Some(ImportValue::Global(value)) => {
*value
},
_ => panic!("Imported global value was not provided {:?} ({}.{})", imported, module_name, field_name)
None => {
if options.mock_missing_globals {
0
}
else {
panic!("Imported global value was not provided ({}.{})", module_name, field_name)
}
},
_ => {
panic!("Expected global import, but received {:?} ({}.{})", imported, module_name, field_name)
}
}
}
};
@@ -345,7 +357,20 @@ impl Instance {
Some(ImportValue::Table(t)) => {
t.to_vec()
},
_ => panic!("Imported table was not provided {:?} ({}.{})", imported, module_name, field_name)
None => {
if options.mock_missing_tables {
let len = table.entity.size;
let mut v = Vec::with_capacity(len);
v.resize(len, 0);
v
}
else {
panic!("Imported table value was not provided ({}.{})", module_name, field_name)
}
},
_ => {
panic!("Expected global table, but received {:?} ({}.{})", imported, module_name, field_name)
}
}
},
None => {