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parser: fix fn attributes empty error

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yuyi 2020-06-13 00:27:05 +08:00 committed by GitHub
parent 0d1e5abc41
commit 90f07eb64a
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4 changed files with 19 additions and 3 deletions
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5
vlib/v/checker/tests/fn_attributes_empty_err.out Normal file
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@ -0,0 +1,5 @@
vlib/v/checker/tests/fn_attributes_empty_err.v:1:1: error: attributes cannot be empty
1 | [] fn tt() {
| ~~
2 | println('text')
3 | }

6
vlib/v/checker/tests/fn_attributes_empty_err.vv Normal file
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@ -0,0 +1,6 @@
[] fn tt() {
println('text')
}
fn main() {
tt()
}

4
vlib/v/checker/tests/multiple_fn_attributes.out
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@ -1,4 +1,4 @@
vlib/v/checker/tests/multiple_fn_attributes.v:2:1: error: multiple attributes detected
vlib/v/checker/tests/multiple_fn_attributes.v:1:1: error: multiple attributes detected
1 | [inline;deprecated]
| ~~~~~~~~~~~~~~~~~~~
2 | fn foo(name string) string {}
| ~~

7
vlib/v/parser/parser.v
View File

@ -407,9 +407,14 @@ pub fn (mut p Parser) top_stmt() ast.Stmt {
}
}
.lsbr {
start_pos := p.tok.position()
attrs := p.attributes()
if attrs.len > 1 {
p.error('multiple attributes detected')
end_pos := p.tok.position()
p.error_with_pos('multiple attributes detected', start_pos.extend(end_pos))
} else if attrs.len == 0 {
end_pos := p.tok.position()
p.error_with_pos('attributes cannot be empty', start_pos.extend(end_pos))
}
return attrs[0]
}