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compiler: fix error in case of void function used as a value

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Delyan Angelov 2020-01-12 02:46:25 +02:00 • committed by Alexander Medvednikov
parent f7f5f43c48
commit ba699d8b4f
4 changed files with 44 additions and 6 deletions
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27
vlib/compiler/compile_errors.v
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@ -197,6 +197,33 @@ fn (p mut Parser) print_error_context() {
// p.scanner.debug_tokens()
}
fn ienv_default(ename string, idefault int) int {
es := os.getenv(ename)
if es.len == 0 { return idefault }
return es.int()
}
// print_current_tokens/1 pretty prints the current token context, like this:
// // Your label: tokens[ 32] = Token{ .line: 8, .pos: 93, .tok: 85 } = mut
// // Your label: tokens[> 33] = Token{ .line: 8, .pos: 95, .tok: 1 } = b
// // Your label: tokens[ 34] = Token{ .line: 8, .pos: 98, .tok: 31 } = :=
// It is useful while debugging the v compiler itself. > marks p.token_idx
fn (p &Parser) print_current_tokens(label string){
btokens := ienv_default('V_BTOKENS', 5)
atokens := ienv_default('V_ATOKENS', 5)
ctoken_idx := p.token_idx
stoken_idx := imax(0, ctoken_idx - btokens)
etoken_idx := imin( ctoken_idx + atokens + 1, p.tokens.len)
for i := stoken_idx; i < etoken_idx; i++ {
idx := if i == ctoken_idx {
'>${i:3d}'
} else {
' ${i:3d}'
}
eprintln('$label: tokens[$idx] = ' + p.tokens[ i ].detailed_str())
}
}
fn normalized_error(s string) string {
mut res := s
if !res.contains('__') {