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cgen: add gen_str_for_array_fixed

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yuyi 2020-04-24 13:32:27 +08:00 committed by GitHub
parent c30c76c285
commit 998fc8fc07
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2 changed files with 45 additions and 0 deletions
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28
vlib/v/gen/cgen.v
View File

@ -2880,6 +2880,7 @@ fn (mut g Gen) gen_str_for_type(sym table.TypeSymbol, styp, str_fn_name string)
match sym.info {
table.Alias { g.gen_str_default(sym, styp, str_fn_name) }
table.Array { g.gen_str_for_array(it, styp, str_fn_name) }
table.ArrayFixed { g.gen_str_for_array_fixed(it, styp, str_fn_name) }
table.Enum { g.gen_str_for_enum(it, styp, str_fn_name) }
table.Struct { g.gen_str_for_struct(it, styp, str_fn_name) }
table.Map { g.gen_str_for_map(it, styp, str_fn_name) }
@ -3030,6 +3031,33 @@ fn (mut g Gen) gen_str_for_array(info table.Array, styp, str_fn_name string) {
g.auto_str_funcs.writeln('}')
}
fn (mut g Gen) gen_str_for_array_fixed(info table.ArrayFixed, styp, str_fn_name string) {
sym := g.table.get_type_symbol(info.elem_type)
field_styp := g.typ(info.elem_type)
if sym.kind == .struct_ && !sym.has_method('str') {
g.gen_str_for_type(sym, field_styp, styp_to_str_fn_name(field_styp))
}
g.definitions.writeln('string ${str_fn_name}($styp a); // auto')
g.auto_str_funcs.writeln('string ${str_fn_name}($styp a) {')
g.auto_str_funcs.writeln('\tstrings__Builder sb = strings__new_builder($info.size * 10);')
g.auto_str_funcs.writeln('\tstrings__Builder_write(&sb, tos3("["));')
g.auto_str_funcs.writeln('\tfor (int i = 0; i < $info.size; i++) {')
if sym.kind == .struct_ && !sym.has_method('str') {
g.auto_str_funcs.writeln('\t\t\tstrings__Builder_write(&sb, ${field_styp}_str(a[i],0));')
} else if sym.kind in [.f32, .f64] {
g.auto_str_funcs.writeln('\t\t\tstrings__Builder_write(&sb, _STR("%g", a[i]));')
} else {
g.auto_str_funcs.writeln('\t\t\tstrings__Builder_write(&sb, ${field_styp}_str(a[i]));')
}
g.auto_str_funcs.writeln('\t\tif (i != $info.size-1) {')
g.auto_str_funcs.writeln('\t\t\tstrings__Builder_write(&sb, tos3(", "));')
g.auto_str_funcs.writeln('\t\t}')
g.auto_str_funcs.writeln('\t}')
g.auto_str_funcs.writeln('\tstrings__Builder_write(&sb, tos3("]"));')
g.auto_str_funcs.writeln('\treturn strings__Builder_str(&sb);')
g.auto_str_funcs.writeln('}')
}
fn (mut g Gen) gen_str_for_map(info table.Map, styp, str_fn_name string) {
key_sym := g.table.get_type_symbol(info.key_type)
key_styp := g.typ(info.key_type)

17
vlib/v/tests/fixed_array_to_string_test.v Normal file
View File

@ -0,0 +1,17 @@
fn test_fixed_array_to_string_conversion() {
a := ['1', '2', '3', '4']!!
assert a.str() == '["1", "2", "3", "4"]'
b := [1, 2, 3, 4]!!
assert b.str() == '[1, 2, 3, 4]'
}
fn test_interpolation_fixed_array_to_string() {
a := ['1', '2', '3']!!
assert '$a' == '["1", "2", "3"]'
b := ['a', 'b']!!
assert '$b' == '["a", "b"]'
c := [1, 2, 3]!!
assert '$c' == '[1, 2, 3]'
d := [1.1, 2.2, 3.3]!!
assert '$d' == '[1.1, 2.2, 3.3]'
}