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parser: panic and exit count as returns

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This commit is contained in:
Julian Schurhammer 2019-08-09 18:17:31 +12:00 committed by Alexander Medvednikov
parent fbc480fbed
commit 6a9bda806f
1 changed files with 14 additions and 4 deletions
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18
compiler/parser.v
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@ -1130,6 +1130,10 @@ fn (p mut Parser) statement(add_semi bool) string {
p.js_decode()
}
else {
// panic and exit count as returns since they stop the function
if p.lit == 'panic' || p.lit == 'exit' {
p.returns = true
}
// `a + 3`, `a(7)` or maybe just `a`
q = p.bool_expression()
}
@ -2945,11 +2949,17 @@ fn (p mut Parser) if_st(is_expr bool, elif_depth int) string {
if p.tok == .key_if {
if is_expr {
p.gen(') : (')
return p.if_st(is_expr, elif_depth + 1)
nested := p.if_st(is_expr, elif_depth + 1)
nested_returns := p.returns
p.returns = if_returns && nested_returns
return nested
}
else {
p.gen(' else ')
return p.if_st(is_expr, 0)
nested := p.if_st(is_expr, 0)
nested_returns := p.returns
p.returns = if_returns && nested_returns
return nested
}
// return ''
}
@ -2966,10 +2976,10 @@ fn (p mut Parser) if_st(is_expr bool, elif_depth int) string {
if is_expr {
p.gen(strings.repeat(`)`, elif_depth + 1))
}
else_returns := p.returns
p.returns = if_returns && else_returns
return typ
}
else_returns := p.returns
p.returns = if_returns && else_returns
p.inside_if_expr = false
if p.fileis('test_test') {
println('if ret typ="$typ" line=$p.scanner.line_nr')