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generate .str() for all arrays

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This commit is contained in:
Alexander Medvednikov
2019-08-10 23:02:48 +02:00
parent f628d6d35d
commit 8c3475b902
9 changed files with 92 additions and 42 deletions
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18
compiler/fn.v
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@@ -794,8 +794,15 @@ fn (p mut Parser) fn_call_args(f mut Fn) *Fn {
// If `arg` is mutable, the caller needs to provide `mut`:
// `mut numbers := [1,2,3]; reverse(mut numbers);`
if arg.is_mut {
if p.tok != .key_mut {
p.error('`$arg.name` is a mutable argument, you need to provide `mut`: `$f.name(...mut a...)`')
if p.tok != .key_mut && p.tok == .name {
mut dots_example := 'mut $p.lit'
if i > 0 {
dots_example = '.., ' + dots_example
}
if i < f.args.len - 1 {
dots_example = dots_example + ',..'
}
p.error('`$arg.name` is a mutable argument, you need to provide `mut`: `$f.name($dots_example)`')
}
if p.peek() != .name {
p.error('`$arg.name` is a mutable argument, you need to provide a variable to modify: `$f.name(... mut a...)`')
@@ -831,6 +838,13 @@ fn (p mut Parser) fn_call_args(f mut Fn) *Fn {
}
// Make sure this type has a `str()` method
if !T.has_method('str') {
// Arrays have automatic `str()` methods
if T.name.starts_with('array_') {
p.gen_array_str(mut T)
p.cgen.set_placeholder(ph, '${typ}_str(')
p.gen(')')
continue
}
error_msg := ('`$typ` needs to have method `str() string` to be printable')
if T.fields.len > 0 {
mut index := p.cgen.cur_line.len - 1