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cgen: minor simplification of gen_str_for_struct() (#10533)

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yuyi 2021-06-21 19:19:52 +08:00 committed by GitHub
parent 1e9e717111
commit 5d0e9417db
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1 changed files with 29 additions and 43 deletions
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72
vlib/v/gen/c/auto_str_struct.v
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@ -5,6 +5,7 @@ module c
// that can be found in the LICENSE file.
import v.ast
import v.util
import strings
fn (g &Gen) type_to_fmt1(typ ast.Type) StrIntpType {
if typ == ast.byte_type_idx {
@ -47,30 +48,15 @@ fn (g &Gen) type_to_fmt1(typ ast.Type) StrIntpType {
}
fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name string) {
// g.gen_str_for_struct1(info, styp, str_fn_name)
// TODO: short it if possible
// generates all definitions of substructs
mut fnames2strfunc := map{
'': ''
}
for field in info.fields {
sym := g.table.get_type_symbol(field.typ)
if !sym.has_method('str') {
mut typ := field.typ
if typ.is_ptr() {
typ = typ.deref()
}
field_styp := g.typ(typ)
field_fn_name := g.gen_str_for_type(field.typ)
fnames2strfunc[field_styp] = field_fn_name
}
}
// _str() functions should have a single argument, the indenting ones take 2:
g.type_definitions.writeln('static string ${str_fn_name}($styp it); // auto')
g.auto_str_funcs.writeln('static string ${str_fn_name}($styp it) { return indent_${str_fn_name}(it, 0);}')
g.type_definitions.writeln('static string indent_${str_fn_name}($styp it, int indent_count); // auto')
g.auto_str_funcs.writeln('static string indent_${str_fn_name}($styp it, int indent_count) {')
mut fn_builder := strings.new_builder(512)
defer {
g.auto_fn_definitions << fn_builder.str()
}
fn_builder.writeln('static string indent_${str_fn_name}($styp it, int indent_count) {')
mut clean_struct_v_type_name := styp.replace('__', '.')
if clean_struct_v_type_name.contains('_T_') {
// TODO: this is a bit hacky. styp shouldn't be even parsed with _T_
@ -82,15 +68,15 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name stri
clean_struct_v_type_name = util.strip_main_name(clean_struct_v_type_name)
// generate ident / indent length = 4 spaces
if info.fields.len == 0 {
g.auto_str_funcs.writeln('\treturn _SLIT("$clean_struct_v_type_name{}");')
g.auto_str_funcs.writeln('}')
g.auto_str_funcs.writeln('')
fn_builder.writeln('\treturn _SLIT("$clean_struct_v_type_name{}");')
fn_builder.writeln('}')
fn_builder.writeln('')
return
}
g.auto_str_funcs.writeln('\tstring indents = string_repeat(_SLIT(" "), indent_count);')
g.auto_str_funcs.writeln('\tstring res = str_intp( ${info.fields.len * 4 + 3}, _MOV((StrIntpData[]){')
g.auto_str_funcs.writeln('\t\t{_SLIT("$clean_struct_v_type_name{\\n"), 0, {.d_c=0}},')
fn_builder.writeln('\tstring indents = string_repeat(_SLIT(" "), indent_count);')
fn_builder.writeln('\tstring res = str_intp( ${info.fields.len * 4 + 3}, _MOV((StrIntpData[]){')
fn_builder.writeln('\t\t{_SLIT("$clean_struct_v_type_name{\\n"), 0, {.d_c=0}},')
for i, field in info.fields {
mut ptr_amp := if field.typ.is_ptr() { '&' } else { '' }
@ -109,9 +95,9 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name stri
// first fields doesn't need \n
if i == 0 {
g.auto_str_funcs.write_string('\t\t{_SLIT0, $si_s_code, {.d_s=indents}}, {_SLIT(" $field.name: $ptr_amp$prefix"), 0, {.d_c=0}}, ')
fn_builder.write_string('\t\t{_SLIT0, $si_s_code, {.d_s=indents}}, {_SLIT(" $field.name: $ptr_amp$prefix"), 0, {.d_c=0}}, ')
} else {
g.auto_str_funcs.write_string('\t\t{_SLIT("\\n"), $si_s_code, {.d_s=indents}}, {_SLIT(" $field.name: $ptr_amp$prefix"), 0, {.d_c=0}}, ')
fn_builder.write_string('\t\t{_SLIT("\\n"), $si_s_code, {.d_s=indents}}, {_SLIT(" $field.name: $ptr_amp$prefix"), 0, {.d_c=0}}, ')
}
// custom methods management
@ -120,15 +106,15 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name stri
field_styp_fn_name := if has_custom_str {
'${field_styp}_str'
} else {
fnames2strfunc[field_styp]
g.gen_str_for_type(field.typ)
}
// manage the fact hat with float we use always the g representation
if sym.kind !in [.f32, .f64] {
g.auto_str_funcs.write_string('{_SLIT("$quote_str"), ${int(base_fmt)}, {.${data_str(base_fmt)}=')
fn_builder.write_string('{_SLIT("$quote_str"), ${int(base_fmt)}, {.${data_str(base_fmt)}=')
} else {
g_fmt := '0x' + (u32(base_fmt) | u32(0x7F) << 9).hex()
g.auto_str_funcs.write_string('{_SLIT("$quote_str"), $g_fmt, {.${data_str(base_fmt)}=')
fn_builder.write_string('{_SLIT("$quote_str"), $g_fmt, {.${data_str(base_fmt)}=')
}
mut func := struct_auto_str_func1(sym, field.typ, field_styp_fn_name, field.name)
@ -136,32 +122,32 @@ fn (mut g Gen) gen_str_for_struct(info ast.Struct, styp string, str_fn_name stri
// manage reference types can be "nil"
if field.typ.is_ptr() && !(field.typ in ast.charptr_types
|| field.typ in ast.byteptr_types || field.typ == ast.voidptr_type_idx) {
g.auto_str_funcs.write_string('isnil(it.${c_name(field.name)})')
g.auto_str_funcs.write_string(' ? _SLIT("nil") : ')
fn_builder.write_string('isnil(it.${c_name(field.name)})')
fn_builder.write_string(' ? _SLIT("nil") : ')
// struct, floats and ints have a special case through the _str function
if sym.kind != .struct_ && !field.typ.is_int_valptr() && !field.typ.is_float_valptr() {
g.auto_str_funcs.write_string('*')
fn_builder.write_string('*')
}
}
// handle circular ref type of struct to the struct itself
if styp == field_styp {
g.auto_str_funcs.write_string('_SLIT("<circular>")')
fn_builder.write_string('_SLIT("<circular>")')
} else {
// manage C charptr
if field.typ in ast.charptr_types {
g.auto_str_funcs.write_string('tos2((byteptr)$func)')
fn_builder.write_string('tos2((byteptr)$func)')
} else {
g.auto_str_funcs.write_string(func)
fn_builder.write_string(func)
}
}
g.auto_str_funcs.writeln('}}, {_SLIT("$quote_str"), 0, {.d_c=0}},')
fn_builder.writeln('}}, {_SLIT("$quote_str"), 0, {.d_c=0}},')
}
g.auto_str_funcs.writeln('\t\t{_SLIT("\\n"), $si_s_code, {.d_s=indents}}, {_SLIT("}"), 0, {.d_c=0}},')
g.auto_str_funcs.writeln('\t}));')
g.auto_str_funcs.writeln('\tstring_free(&indents);')
g.auto_str_funcs.writeln('\treturn res;')
g.auto_str_funcs.writeln('}')
fn_builder.writeln('\t\t{_SLIT("\\n"), $si_s_code, {.d_s=indents}}, {_SLIT("}"), 0, {.d_c=0}},')
fn_builder.writeln('\t}));')
fn_builder.writeln('\tstring_free(&indents);')
fn_builder.writeln('\treturn res;')
fn_builder.writeln('}')
}
fn struct_auto_str_func1(sym &ast.TypeSymbol, field_type ast.Type, fn_name string, field_name string) string {