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cgen: fix code generation for a struct field, having a type of fixed array of options field [5]?Type (#21082)

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Felipe Pena 2024-03-24 15:35:30 -03:00 • committed by GitHub
parent f66b5954c2
commit 6b23b1dd25
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2 changed files with 63 additions and 5 deletions
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52
vlib/v/gen/c/cgen.v
View file

@ -1473,12 +1473,20 @@ pub fn (mut g Gen) write_typedef_types() {
def_str = def_str.replace_once('(*)', '(*${styp}[${len}])')
g.type_definitions.writeln(def_str)
} else if !info.is_fn_ret {
g.type_definitions.writeln('typedef ${fixed} ${styp} [${len}];')
base := g.typ(info.elem_type.clear_option_and_result())
if info.elem_type.has_flag(.option) && base !in g.options_forward {
g.options_forward << base
} else if info.elem_type.has_flag(.result) && base !in g.results_forward {
g.results_forward << base
lock g.done_options {
if base !in g.done_options {
g.type_definitions.writeln('typedef ${fixed} ${styp} [${len}];')
g.options_forward << base
g.done_options << styp
}
}
} else {
g.type_definitions.writeln('typedef ${fixed} ${styp} [${len}];')
if info.elem_type.has_flag(.result) && base !in g.results_forward {
g.results_forward << base
}
}
}
}
@ -6396,6 +6404,27 @@ fn (mut g Gen) write_types(symbols []&ast.TypeSymbol) {
match sym.info {
ast.Struct {
if !struct_names[name] {
// generate field option types for fixed array of option struct before struct declaration
opt_fields := sym.info.fields.filter(g.table.final_sym(it.typ).kind == .array_fixed)
for opt_field in opt_fields {
field_sym := g.table.final_sym(opt_field.typ)
arr := field_sym.info as ast.ArrayFixed
if !arr.elem_type.has_flag(.option) {
continue
}
styp := field_sym.cname
mut fixed_elem_name := g.typ(arr.elem_type.set_nr_muls(0))
if arr.elem_type.is_ptr() {
fixed_elem_name += '*'.repeat(arr.elem_type.nr_muls())
}
len := arr.size
lock g.done_options {
if styp !in g.done_options {
g.type_definitions.writeln('typedef ${fixed_elem_name} ${styp} [${len}];')
g.done_options << styp
}
}
}
g.struct_decl(sym.info, name, false)
struct_names[name] = true
}
@ -6479,7 +6508,20 @@ fn (mut g Gen) write_types(symbols []&ast.TypeSymbol) {
g.type_definitions.writeln(def_str)
} else if elem_sym.info !is ast.ArrayFixed
|| (elem_sym.info as ast.ArrayFixed).size > 0 {
g.type_definitions.writeln('typedef ${fixed_elem_name} ${styp} [${len}];')
// fixed array of option struct must be defined backwards
if sym.info.elem_type.has_flag(.option) && elem_sym.info is ast.Struct {
styp_elem, base := g.option_type_name(sym.info.elem_type)
lock g.done_options {
if base !in g.done_options {
g.done_options << base
g.typedefs.writeln('typedef struct ${styp_elem} ${styp_elem};')
g.type_definitions.writeln('${g.option_type_text(styp_elem,
base)};')
}
}
} else {
g.type_definitions.writeln('typedef ${fixed_elem_name} ${styp} [${len}];')
}
}
}
}

16
vlib/v/tests/option_array_fixed_struct_test.v Normal file
View file

@ -0,0 +1,16 @@
struct Test {}
struct Test2 {
a [10]?Test
}
struct Test3 {
a [10]?Test
}
fn test_main() {
a := Test2{}
b := Test3{}
assert dump(Test2{}) == a
assert dump(Test3{}) == b
}