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compiler: replace STRUCT_DEFAULT_VALUE with {0}

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This commit is contained in:
Alexander Medvednikov 2019-08-23 02:38:18 +03:00
parent 6c6cbe0821
commit 7086547471
3 changed files with 7 additions and 16 deletions
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5
compiler/cheaders.v
View File

@ -11,7 +11,6 @@ CommonCHeaders = '
#include <inttypes.h> // int64_t etc
#include <string.h> // memcpy
#define STRUCT_DEFAULT_VALUE {}
#define EMPTY_STRUCT_DECLARATION
#define OPTION_CAST(x) (x)
@ -30,9 +29,7 @@ CommonCHeaders = '
// On MSVC these are the same (as long as /volatile:ms is passed)
#define _Atomic volatile
// MSVC can\'t parse some things properly
#undef STRUCT_DEFAULT_VALUE
#define STRUCT_DEFAULT_VALUE {0}
// MSVC cannot parse some things properly
#undef EMPTY_STRUCT_DECLARATION
#define EMPTY_STRUCT_DECLARATION void *____dummy_variable;
#undef OPTION_CAST

14
compiler/parser.v
View File

@ -2057,10 +2057,7 @@ fn (p mut Parser) index_expr(typ_ string, fn_ph int) string {
tmp_ok := p.get_tmp()
if is_map {
p.gen('$tmp')
mut def := type_default(typ)
if def == 'STRUCT_DEFAULT_VALUE' {
def = '{0}'
}
def := type_default(typ)
p.cgen.insert_before('$typ $tmp = $def; bool $tmp_ok = map_get($index_expr, & $tmp);')
}
else if is_arr {
@ -2689,7 +2686,7 @@ fn (p mut Parser) array_init() string {
name := p.check_name()
if p.table.known_type(name) {
p.cgen.resetln('')
p.gen('STRUCT_DEFAULT_VALUE')
p.gen('{0}')
if is_const_len {
return '[${p.mod}__$lit]$name'
}
@ -2887,7 +2884,7 @@ fn (p mut Parser) struct_init(typ string, is_c_struct_init bool) string {
continue
}
def_val := type_default(field_typ)
if def_val != '' && def_val != 'STRUCT_DEFAULT_VALUE' {
if def_val != '' && def_val != '{0}' {
p.gen('.$field.name = $def_val')
if i != t.fields.len - 1 {
p.gen(',')
@ -3185,10 +3182,7 @@ fn (p mut Parser) for_st() {
p.genln('for (int l = 0; l < keys_$tmp .len; l++) {')
p.genln(' string $i = ((string*)keys_$tmp .data)[l];')
//p.genln(' string $i = *(string*) ( array__get(keys_$tmp, l) );')
mut def := type_default(typ)
if def == 'STRUCT_DEFAULT_VALUE' {
def = '{0}'
}
def := type_default(typ)
// TODO don't call map_get() for each key, fetch values while traversing
// the tree (replace `map_keys()` above with `map_key_vals()`)
p.genln('$var_typ $val = $def; map_get($tmp, $i, & $val);')

4
compiler/table.v
View File

@ -603,7 +603,7 @@ fn type_default(typ string) string {
}
// User struct defined in another module.
if typ.contains('__') {
return 'STRUCT_DEFAULT_VALUE'
return '{0}'
}
// Default values for other types are not needed because of mandatory initialization
switch typ {
@ -625,7 +625,7 @@ fn type_default(typ string) string {
case 'byteptr': return '0'
case 'voidptr': return '0'
}
return 'STRUCT_DEFAULT_VALUE'
return '{0}'
}
// TODO PERF O(n)