mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
261 lines
6.4 KiB
V
261 lines
6.4 KiB
V
module compiler
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import strings
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const (
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dot_ptr = '.'
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)
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fn (p mut Parser) gen_var_decl(name string, is_static bool) string {
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p.gen('var $name /* typ */ = ')
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mut typ := p.bool_expression()
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if typ.starts_with('...') { typ = typ[3..] }
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or_else := p.tok == .key_orelse
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if or_else {
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// return p.gen_handle_option_or_else(typ, name, pos)
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}
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return typ
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}
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fn (p mut Parser) gen_fn_decl(f Fn, typ, _str_args string) {
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mut str_args := ''
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for i, arg in f.args {
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str_args += ' /** @type { $arg.typ } **/ ' + arg.name
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if i < f.args.len - 1 {
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str_args += ', '
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}
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}
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name := p.table.fn_gen_name(f)
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if f.is_method {
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//p.genln('\n${f.receiver_typ}.prototype.${name} = function($str_args) {')
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p.genln('function ${f.receiver_typ}_$name($str_args) {')
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} else {
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p.genln('/** @return { $typ } **/\nfunction $name($str_args) {')
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}
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}
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fn (p mut Parser) gen_blank_identifier_assign() {
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assign_error_tok_idx := p.token_idx
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p.check_name()
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p.check_space(.assign)
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is_indexer := p.peek() == .lsbr
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is_fn_call, next_expr := p.is_expr_fn_call(p.token_idx)
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p.bool_expression()
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if !is_indexer && !is_fn_call {
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p.error_with_token_index('assigning `$next_expr` to `_` is redundant', assign_error_tok_idx)
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}
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or_else := p.tok == .key_orelse
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if or_else {
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// return p.gen_handle_option_or_else(typ, '', pos)
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}
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}
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// TODO: optionals
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fn (p mut Parser) gen_handle_option_or_else(_typ, name string, fn_call_ph int) string {
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return _typ
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}
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fn types_to_c(types []Type, table &Table) string {
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mut sb := strings.new_builder(10)
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for t in types {
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if t.cat != .union_ && t.cat != .struct_ {
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continue
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}
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sb.write('\n/**\n')
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sb.write('* @typedef { object } $t.name' + 'Type\n')
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for field in t.fields {
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sb.writeln('* @property { $field.typ' + '= } $field.name')
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}
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sb.writeln('**/\n')
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sb.writeln('/** @type { function & $t.name' + 'Type } **/')
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sb.writeln('var $t.name = function() {}')
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}
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return sb.str()
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}
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fn (p mut Parser) index_get(typ string, fn_ph int, cfg IndexConfig) {
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p.cgen.cur_line = p.cgen.cur_line.replace(',', '[') + ']'
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}
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fn (table &Table) fn_gen_name(f &Fn) string {
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mut name := f.name
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if f.is_method {
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name = name.replace(' ', '')
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name = name.replace('*', '')
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name = name.replace('+', 'plus')
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name = name.replace('-', 'minus')
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return name
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}
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// Avoid name conflicts (with things like abs(), print() etc).
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// Generate b_abs(), b_print()
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// TODO duplicate functionality
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if f.mod == 'builtin' && f.name in CReserved {
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return 'v_$name'
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}
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return name
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}
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//fn (p mut Parser) gen_method_call(receiver &Var, receiver_type string,
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//ftyp string, cgen_name string, receiver Var,method_ph int)
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fn (p mut Parser) gen_method_call(receiver &Var, receiver_type string,
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cgen_name string, ftyp string, method_ph int)
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{
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// TODO js methods have been broken from the start
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//mut cgen_name := p.table.fn_gen_name(f)
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//mut method_call := cgen_name + '('
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//p.gen('/*2*/.' + cgen_name.all_after('_') + '(')
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t := receiver_type.replace('*', '')
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p.cgen.set_placeholder(method_ph, '${t}_$cgen_name(')
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//p.cgen.set_placeholder(method_ph, '$cast kKE $method_call')
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//return method_call
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}
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fn (p mut Parser) gen_array_at(typ string, is_arr0 bool, fn_ph int) {
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p.gen('[')
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}
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fn (p mut Parser) gen_for_header(i, tmp, var_typ, val string) {
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p.genln('for (var $i = 0; $i < ${tmp}.length; $i++) {')
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if val == '_' { return }
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p.genln('var $val = $tmp [$i];')
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}
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fn (p mut Parser) gen_for_range_header(i, range_end, tmp, var_type, val string) {
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p.genln(';\nfor (var $i = $tmp; $i < $range_end; $i++) {')
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if val == '_' { return }
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p.genln('var /*$var_type*/ $val = $i;')
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}
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fn (p mut Parser) gen_for_str_header(i, tmp, var_typ, val string) {
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p.genln('for (var $i = 0; $i < $tmp .length; $i ++) {')
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if val == '_' { return }
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p.genln('var $val = $tmp[$i];')
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}
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fn (p mut Parser) gen_for_map_header(i, tmp, var_typ, val, typ string) {
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p.genln('for (var $i in $tmp) {')
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if val == '_' { return }
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p.genln('var $val = $tmp[$i];')
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}
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fn (p mut Parser) gen_for_varg_header(i, varg, var_typ, val string) {
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p.genln('for (var $i = 0; $i < ${varg}.len; $i++) {')
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if val == '_' { return }
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p.genln('var $val = ${varg}.args[$i];')
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}
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fn (p mut Parser) gen_array_init(typ string, no_alloc bool, new_arr_ph int, nr_elems int) {
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p.cgen.set_placeholder(new_arr_ph, '[')
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p.gen(']')
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}
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fn (p mut Parser) gen_array_set(typ string, is_ptr, is_map bool,fn_ph, assign_pos int, is_cao bool) {
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mut val := p.cgen.cur_line[assign_pos..]
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p.cgen.resetln(p.cgen.cur_line[..assign_pos])
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p.gen('] =')
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cao_tmp := p.cgen.cur_line
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if is_cao {
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val = cao_tmp + val.all_before('=') + val.all_after('=')
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}
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p.gen(val)
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}
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// returns true in case of an early return
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fn (p mut Parser) gen_struct_init(typ string, t Type) bool {
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p.next()
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p.check(.lcbr)
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ptr := typ.contains('*')
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if !ptr {
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p.gen('{')
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}
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else {
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// TODO tmp hack for 0 pointers init
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// &User{!} ==> 0
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if p.tok == .not {
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p.next()
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p.gen('}')
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p.check(.rcbr)
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return true
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}
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}
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return false
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}
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fn (p mut Parser) gen_struct_field_init(field string) {
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p.gen('$field : ')
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}
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fn (p mut Parser) gen_empty_map(typ string) {
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p.gen('{}')
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}
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fn (p mut Parser) cast(typ string) string {
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p.next()
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pos := p.cgen.add_placeholder()
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if p.tok == .rpar {
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p.next()
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}
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p.check(.lpar)
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p.bool_expression()
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if typ == 'string' {
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if p.tok == .comma {
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p.check(.comma)
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p.cgen.set_placeholder(pos, 'tos(')
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//p.gen('tos(')
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p.gen(', ')
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p.expression()
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p.gen(')')
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}
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}
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p.check(.rpar)
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return typ
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}
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fn type_default(typ string) string {
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if typ.starts_with('array_') {
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return '[]'
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}
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// Always set pointers to 0
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if typ.ends_with('*') {
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return '0'
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}
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// User struct defined in another module.
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if typ.contains('__') {
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return '{}'
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}
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// Default values for other types are not needed because of mandatory initialization
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match typ {
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'bool'{ return '0'}
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'string'{ return 'tos("")'}
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'i8'{ return '0'}
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'i16'{ return '0'}
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'i64'{ return '0'}
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'u16'{ return '0'}
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'u32'{ return '0'}
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'u64'{ return '0'}
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'byte'{ return '0'}
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'int'{ return '0'}
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'rune'{ return '0'}
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'f32'{ return '0.0'}
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'f64'{ return '0.0'}
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'byteptr'{ return '0'}
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'voidptr'{ return '0'}
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}
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return '{}'
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}
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fn (p mut Parser) gen_array_push(ph int, typ, expr_type, tmp, tmp_typ string) {
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push_array := typ == expr_type
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if push_array {
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p.cgen.set_placeholder(ph, 'push(&' )
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p.gen('), $tmp, $typ)')
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} else {
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p.check_types(expr_type, tmp_typ)
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p.gen(')')
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p.cgen.cur_line = p.cgen.cur_line.replace(',', '.push')
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}
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}
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