static clj_Result read_comment(clj_Reader *r, wint_t initch) {
wint_t c;
do {
c = pop_char(r);
} while (!ends_line(c) && c != WEOF);
return ok_read(c);
}
static clj_Result read_typed_string(clj_Type type, const wchar_t *prefix,
clj_Reader *r) {
wint_t c;
StringBuffer strbuf;
int escape = 0;
strbuf_init(&strbuf, 80); // C'mon now, how big is your terminal?
strbuf_appends(&strbuf, prefix);
while (1) {
c = pop_char(r);
switch (c) {
case WEOF:
strbuf_free(&strbuf);
reader_error(r, CLJ_UNEXPECTED_EOF);
case L'\\':
strbuf_append(&strbuf, c);
escape = !escape;
break;
case L'"':
strbuf_append(&strbuf, c);
if (escape) {
escape = 0;
break;
} else {
emit(r, type, strbuf.chars);
strbuf_free(&strbuf);
return CLJ_MORE;
}
default:
escape = 0;
strbuf_append(&strbuf, c);
}
}
}
static clj_Result read_dispatch(clj_Reader *r, wint_t initch) {
form_reader dispatch_reader;
wint_t c = pop_char(r);
if ((dispatch_reader = get_dispatch_reader(c))) {
return dispatch_reader(r, c);
} else {
assert(0); //TODO tagged types and unknown dispatch macros
}
}
main()
{
int type;
double op2;
char c;
char s[MAXOP];
while ((type = getop(s)) != EOF) {
switch (type) {
case NUMBER:
push_token(NUMBER, atof(s));
break;
case '+': case '-': case '/': case '*': case '%':
while (((c = top_char()) != EOF) && islesseq(type, c))
push_token(pop_char(), -1);
push_char(type);
break;
case '(':
push_char(type);
break;
case ')':
while (((c = pop_char()) != EOF) && c != '(')
push_token(c, -1);
break;
case '\n':
while ((c = pop_char()) != EOF)
push_token(c, -1);
calc();
break;
case 'q':
return;
default:
printf("error: unknown command %s\n", s);
break;
}
}
}
static clj_Result read_token(clj_Type type, clj_Reader *r, wint_t initch,
size_t initial_capacity, char_pred terminates) {
wint_t c;
StringBuffer strbuf;
strbuf_init(&strbuf, initial_capacity);
strbuf_append(&strbuf, initch);
while (1) {
c = pop_char(r);
if (WEOF == c || is_clj_whitespace(c) || terminates(c)) {
push_char(r, c);
emit(r, type, strbuf.chars);
strbuf_free(&strbuf);
break;
} else {
strbuf_append(&strbuf, c);
}
}
return ok_read(c);
}
static clj_Result read_form(clj_Reader *r) {
clj_Result result;
form_reader macro_reader;
wint_t c;
while (WEOF != (c = pop_char(r))) {
if (is_clj_whitespace(c)) {
continue;
} else if ((macro_reader = get_macro_reader(c))) {
return macro_reader(r, c);
} else if (at_number(r, c)) {
return read_number(r, c);
} else {
return read_symbol(r, c);
}
}
if (r->depth > 0) {
reader_error(r, CLJ_UNEXPECTED_EOF);
}
return CLJ_EOF;
};
gboolean press_event( GtkWidget* widget, GdkEventKey* event, GtkLabel *label )
{
if( !global.is_connected )
{
gtk_label_set_text( label_grab, OFFLINE_MESSAGE );
return( TRUE );
}
char command[ COMMAND_BUFFER_SIZE ] = "";
/* Modificators */
if( event->state & GDK_SHIFT_MASK ) strcat( command, "shift+" );
if( event->state & GDK_CONTROL_MASK ) strcat( command, "ctrl+" );
/* Main buttons */
buttons b[] = { { GDK_KEY_Return, "Return" }, { GDK_KEY_Home, "Home" },
{ GDK_KEY_Left, "Left" }, { GDK_KEY_End, "End" },
{ GDK_KEY_Up, "Up" }, { GDK_KEY_Delete, "Delete" },
{ GDK_KEY_Right, "Right" }, { GDK_KEY_Insert, "Insert" },
{ GDK_KEY_Down, "Down" }, { GDK_KEY_Page_Up, "Page_Up" },
{ GDK_KEY_Escape, "Escape" }, { GDK_KEY_Page_Down, "Page_Down" },
{ GDK_KEY_BackSpace, "BackSpace" }, { GDK_KEY_Menu, "Menu" },
{ GDK_KEY_space, "space" }, { GDK_KEY_Tab, "Tab" },
{ GDK_KEY_Alt_L, "alt" }, { GDK_KEY_Super_L, "super" } };
const int b_count = sizeof(b) / sizeof(buttons);
for( int i = 0; i < b_count; i++ )
{
if( event->keyval == b[i].key_code )
{
strcat( command, b[i].key_name );
break;
}
}
/* Chars, digits and functional keys */
for( int i = GDK_KEY_a; i <= GDK_KEY_z; i++ )
{
if( ( event->keyval == i ) || ( event->keyval == (i - 0x20) ) )
{
sprintf( command, "%s%c", command, (char) i );
break;
}
}
for( int i = GDK_KEY_0; i <= GDK_KEY_9; i++ )
{
if( event->keyval == i )
{
sprintf( command, "%s%c", command, (char) i );
break;
}
}
for( int i = GDK_KEY_F1; i <= GDK_KEY_F12; i++ )
{
if( event->keyval == i )
{
sprintf( command, "%sF%i", command, (i - GDK_KEY_F1 + 1) );
break;
}
}
/* Send keys */
if( strlen( command ) != 0 )
{
if( command[ strlen(command) - 1] == '+' ) pop_char( command );
gtk_label_set_text( label_grab, command );
send_key( command );
}
return( FALSE );
}
static wint_t skip_whitespace(clj_Reader *r) {
wint_t c;
while (is_clj_whitespace(c = pop_char(r)));
return c;
}
static wint_t peek_char(clj_Reader *r) {
wchar_t c = pop_char(r);
push_char(r, c);
return c;
}
int main( int argc, char * argv[] )
{
int tmp;
int i = 0;
int num1;
int num2;
int new_num;
char op;
char * src;
char cur_op;
char top_op;
printf( "expression value demo begin !\n" );
#if 0
push_int( 100 );
push_int( 200 );
tmp = pop_int();
printf( "pop is %d \n", tmp );
tmp = pop_int();
printf( "pop is %d \n", tmp );
#endif
if( argc > 1 )
printf( "input expression string is %s \n", argv[1] );
else
exit(0);
src = argv[1];
push_char( '\0');
while( 1 )
{
printf( "src[%d] = %c \n", i, src[i] );
get_num:
/* get a number */
num1 = get_number( src[i] );
if( num1 >= 0 )
printf( "get a number : %d \n", num1 );
else
break;
/* push this number */
printf( "push current int : %d \n", num1 );
push_int( num1 );
/* get the next op */
i++;
cur_op = get_operator( src[i] );
if( cur_op > 0 )
printf( "get a operator: %c \n", cur_op );
else if( cur_op == '\0' )
{
printf( "get a operator == 0: %c \n", cur_op );
}
cmp_op:
top_op = get_top_char();
printf( "get top stack operator: %c \n", top_op );
/* if current op > stack top op, then push current op */
if( get_prio( cur_op ) > get_prio( top_op ) )
{
printf( "<push> push current op : %c \n", cur_op );
push_char( cur_op );
printf( "<push> push ok!\n" );
}
else
{
op = pop_char();
num2 = pop_int();
if( op == '\0' )
{
printf( "op == 0, last result = %d \n", num2 );
exit( 0 );
}
num1 = pop_int();
printf( "<calc> pop 2 num and 1 op, do calc: %d %c %d \n", num1, op, num2 );
new_num = calc( num1, num2, op );
printf( "get calc result: %d \n", new_num );
/* push this new number */
printf( "push new int : %d \n", new_num );
push_int( new_num );
goto cmp_op;
}
/* get the next op */
i++;
}
return 0;
}