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parser: show a hint when using v . with multiple fn mains

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This commit is contained in:
Alexander Medvednikov 2022-07-07 13:04:08 +03:00
parent 426421bebb
commit 7da466e81b
1 changed files with 10 additions and 0 deletions
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10
vlib/v/parser/struct.v
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@ -6,6 +6,7 @@ module parser
import v.ast
import v.token
import v.util
import os
fn (mut p Parser) struct_decl(is_anon bool) ast.StructDecl {
p.top_level_statement_start()
@ -354,6 +355,15 @@ fn (mut p Parser) struct_decl(is_anon bool) ast.StructDecl {
mut ret := p.table.register_sym(sym)
// allow duplicate c struct declarations
if ret == -1 && language != .c {
if _ := p.table.find_fn('main.main') {
if '.' in os.args {
p.error_with_pos('multiple `main` functions detected, and you ran `v .`
perhaps there are multiple V programs in this directory, and you need to
run them via `v file.v` instead',
name_pos)
return ast.StructDecl{}
}
}
p.error_with_pos('cannot register struct `$name`, another type with this name exists',
name_pos)
return ast.StructDecl{}