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#include <glib.h>
#include <glib/gprintf.h>
#include "sciteco.h"
#include "undo.h"
#include "expressions.h"
#include "parser.h"
gint macro_pc = 0;
static struct {
StateStart start;
} states;
static State *current_state = &states.start;
gboolean
macro_execute(const gchar *macro)
{
while (macro[macro_pc]) {
if (!State::input(macro[macro_pc])) {
message_display(GTK_MESSAGE_ERROR,
"Syntax error \"%c\"",
macro[macro_pc]);
return FALSE;
}
macro_pc++;
}
return TRUE;
}
State::State()
{
for (guint i = 0; i < G_N_ELEMENTS(transitions); i++)
transitions[i] = NULL;
}
gboolean
State::input(gchar chr)
{
State *state = current_state;
for (;;) {
State *next = state->get_next_state(chr);
if (!next)
/* Syntax error */
return FALSE;
if (next == state)
break;
state = next;
chr = '\0';
}
if (state != current_state) {
undo.push_var<State *>(current_state);
current_state = state;
}
return TRUE;
}
State *
State::get_next_state(gchar chr)
{
State *next = NULL;
guint upper = g_ascii_toupper(chr);
if (upper < G_N_ELEMENTS(transitions))
next = transitions[upper];
if (!next)
next = custom(chr);
return next;
}
StateStart::StateStart() : State()
{
transitions['\0'] = this;
init(" \r\n\v");
}
void
StateStart::move(gint64 n)
{
sptr_t pos = editor_msg(SCI_GETCURRENTPOS);
editor_msg(SCI_GOTOPOS, pos + n);
undo.push_msg(SCI_GOTOPOS, pos);
}
State *
StateStart::custom(gchar chr)
{
#if 0
/*
* <CTRL/x> commands implemented in StateCtrlCmd
*/
if (IS_CTL(chr))
return states.ctl.get_next_state(CTL_ECHO(chr));
#endif
/*
* arithmetics
*/
if (g_ascii_isdigit(chr)) {
expressions.add_digit(chr);
return this;
}
switch (g_ascii_toupper(chr)) {
case '/':
expressions.push_calc(Expressions::OP_DIV);
break;
case '*':
expressions.push_calc(Expressions::OP_MUL);
break;
case '+':
expressions.push_calc(Expressions::OP_ADD);
break;
case '-':
if (!expressions.args())
expressions.set_num_sign(-expressions.num_sign);
else
expressions.push_calc(Expressions::OP_SUB);
break;
case '&':
expressions.push_calc(Expressions::OP_AND);
break;
case '#':
expressions.push_calc(Expressions::OP_OR);
break;
case '(':
if (expressions.num_sign < 0) {
expressions.push(-1);
expressions.push_calc(Expressions::OP_MUL);
}
expressions.push(Expressions::OP_BRACE);
break;
case ')':
expressions.eval(true);
break;
case ',':
expressions.eval();
expressions.push(Expressions::OP_NEW);
break;
/*
* commands
*/
case 'C':
move(expressions.pop_num_calc());
break;
case 'R':
move(-expressions.pop_num_calc());
break;
case '=':
message_display(GTK_MESSAGE_OTHER, "%" G_GINT64_FORMAT,
expressions.pop_num_calc());
break;
default:
return NULL;
}
return this;
}
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