module c

struct PastTmpVar {
mut:
    var_name       string
    tmp_var        string
    s              string
    s_ends_with_ln bool
}

fn (mut g Gen) past_tmp_var_new() PastTmpVar {
    tmp_var := g.new_tmp_var()
    mut s := g.go_before_last_stmt()
    s_ends_with_ln := s.ends_with('\n')
    s = s.trim_space()
    g.empty_line = true
    return PastTmpVar{
        tmp_var:        tmp_var
        s:              s
        s_ends_with_ln: s_ends_with_ln
    }
}

fn (mut g Gen) past_tmp_var_from_var_name(var_name string) PastTmpVar {
    mut tmp_var := g.new_tmp_var()
    mut s := ''
    if var_name != '' {
        tmp_var = var_name
    } else {
        s = g.go_before_last_stmt()
    }
    s_ends_with_ln := s.ends_with('\n')
    s = s.trim_space()
    g.empty_line = true
    return PastTmpVar{
        var_name:       var_name
        tmp_var:        tmp_var
        s:              s
        s_ends_with_ln: s_ends_with_ln
    }
}

fn (mut g Gen) past_tmp_var_done(p &PastTmpVar) {
    if p.var_name.len == 0 {
        if p.s_ends_with_ln {
            g.writeln(p.s)
        } else {
            g.write(p.s)
        }
        if g.inside_return {
            g.write(' ')
        }
        g.write(p.tmp_var)
    }
}