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comprehension starred expression compatibility

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This commit is contained in:
Jeong YunWon 2020-05-13 01:43:09 +09:00
parent a77e0b8587
commit 0d139f9942
1 changed files with 15 additions and 3 deletions
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18
src/compile.rs
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@ -2027,21 +2027,33 @@ impl<O: OutputStream> Compiler<O> {
}
}
let mut compile_element = |element| {
self.compile_expression(element).map_err(|e| {
if matches!(e.error, CompileErrorType::InvalidStarExpr) {
self.error(CompileErrorType::SyntaxError(
"iterable unpacking cannot be used in comprehension".to_owned(),
))
} else {
e
}
})
};
match kind {
ast::ComprehensionKind::GeneratorExpression { element } => {
self.compile_expression(element)?;
compile_element(element)?;
self.mark_generator();
self.emit(Instruction::YieldValue);
self.emit(Instruction::Pop);
}
ast::ComprehensionKind::List { element } => {
self.compile_expression(element)?;
compile_element(element)?;
self.emit(Instruction::ListAppend {
i: 1 + generators.len(),
});
}
ast::ComprehensionKind::Set { element } => {
self.compile_expression(element)?;
compile_element(element)?;
self.emit(Instruction::SetAdd {
i: 1 + generators.len(),
});