static jl_value_t* repl_parse_input_line(char *buf)
{
if (buf[0] == ';') {
buf++;
return call_jl_function_with_string("repl_hook", buf, strlen(buf));
}
else if (buf[0] == '?') {
char *tmpbuf;
asprintf(&tmpbuf, "@Base.help %s", buf+1);
jl_value_t *v = jl_parse_input_line(tmpbuf);
free(tmpbuf);
return v;
}
return jl_parse_input_line(buf);
}
void jl_input_line_callback(char *input)
{
int end=0, doprint=1;
if (!input || ios_eof(ios_stdin)) {
end = 1;
rl_ast = NULL;
}
else if (!rl_ast) {
// In vi mode, it's possible for this function to be called w/o a
// previous call to return_callback.
rl_ast = jl_parse_input_line(rl_line_buffer);
}
if (rl_ast != NULL) {
doprint = !ends_with_semicolon(input);
add_history_permanent(input);
jl_putc('\n', jl_uv_stdout);
free(input);
}
callback_en = 0;
rl_callback_handler_remove();
handle_input(rl_ast, end, doprint);
rl_ast = NULL;
}
DLLEXPORT void *jl_eval_string(char *str)
{
#ifdef COPY_STACKS
int outside_task = (jl_root_task->stackbase == NULL);
if (outside_task) {
JL_SET_STACK_BASE;
}
#endif
jl_value_t *r;
JL_TRY {
jl_value_t *ast = jl_parse_input_line(str);
JL_GC_PUSH1(&ast);
r = jl_toplevel_eval(ast);
JL_GC_POP();
jl_exception_clear();
}
JL_CATCH {
//jl_show(jl_stderr_obj(), jl_exception_in_transit);
r = NULL;
}
#ifdef COPY_STACKS
if (outside_task) {
jl_root_task->stackbase = NULL;
}
#endif
return r;
}
int true_main(int argc, char *argv[])
{
if (lisp_prompt) {
jl_lisp_prompt();
return 0;
}
jl_array_t *args = jl_alloc_cell_1d(argc);
jl_set_global(jl_current_module, jl_symbol("ARGS"), (jl_value_t*)args);
int i;
for (i=0; i < argc; i++) {
jl_arrayset(args, i, (jl_value_t*)jl_cstr_to_string(argv[i]));
}
jl_set_const(jl_current_module, jl_symbol("JULIA_HOME"),
jl_cstr_to_string(julia_home));
// run program if specified, otherwise enter REPL
if (program) {
return exec_program();
}
init_repl_environment();
jl_function_t *start_client =
(jl_function_t*)jl_get_global(jl_base_module, jl_symbol("_start"));
if (start_client) {
jl_apply(start_client, NULL, 0);
return 0;
}
// client event loop not available; use fallback blocking version
int iserr = 0;
again:
;
JL_TRY {
if (iserr) {
jl_show(jl_exception_in_transit);
ios_printf(ios_stdout, "\n\n");
iserr = 0;
}
while (1) {
char *input = read_expr("julia> ");
if (!input || ios_eof(ios_stdin)) {
ios_printf(ios_stdout, "\n");
break;
}
jl_value_t *ast = jl_parse_input_line(input);
jl_value_t *value = jl_toplevel_eval(ast);
jl_show(value);
ios_printf(ios_stdout, "\n\n");
}
}
JL_CATCH {
iserr = 1;
goto again;
}
return 0;
}
static int return_callback(int count, int key) {
add_history_temporary(rl_line_buffer);
rl_ast = jl_parse_input_line(rl_line_buffer);
rl_done = !rl_ast || !jl_is_expr(rl_ast) ||
(((jl_expr_t*)rl_ast)->head != jl_continue_sym);
if (!rl_done) {
newline_callback(count, key);
} else {
reset_indent();
rl_point = rl_end;
rl_redisplay();
}
return 0;
}
static jl_value_t* repl_parse_input_line(char *buf) {
if (buf[0] == ';') {
buf++;
jl_value_t *f = jl_get_global(jl_base_module,jl_symbol("repl_hook"));
assert(f);
jl_value_t **fargs;
JL_GC_PUSHARGS(fargs, 1);
fargs[0] = jl_pchar_to_string((char*)buf, strlen(buf));
jl_value_t *result = jl_apply((jl_function_t*)f, fargs, 1);
JL_GC_POP();
return result;
}
return jl_parse_input_line(buf);
}
void jl_input_line_callback(char *input)
{
if (input) {
jl_value_t *ast = jl_parse_input_line(input);
int line_done = !ast || !jl_is_expr(ast) ||
(((jl_expr_t*)ast)->head != jl_continue_sym);
if (line_done) {
jl_deprep_terminal();
int doprint = !ends_with_semicolon(input);
stdin_buf[0] = 0; //also sets input[0] == 0
stdin_buf_len = 0;
handle_input(ast, 0, doprint);
}
}
}
DLLEXPORT void *jl_eval_string(const char *str)
{
jl_value_t *r;
JL_TRY {
jl_value_t *ast = jl_parse_input_line(str);
JL_GC_PUSH1(&ast);
r = jl_toplevel_eval(ast);
JL_GC_POP();
jl_exception_clear();
}
JL_CATCH {
//jl_show(jl_stderr_obj(), jl_exception_in_transit);
r = NULL;
}
return r;
}
JL_DLLEXPORT jl_value_t *jl_eval_string(const char *str)
{
jl_value_t *r;
JL_TRY {
char *filename = "none";
jl_value_t *ast = jl_parse_input_line(str, strlen(str),
filename, strlen(filename));
JL_GC_PUSH1(&ast);
r = jl_toplevel_eval(ast);
JL_GC_POP();
jl_exception_clear();
}
JL_CATCH {
//jl_show(jl_stderr_obj(), jl_exception_in_transit);
r = NULL;
}
return r;
}
JL_DLLEXPORT jl_value_t *jl_eval_string(const char *str)
{
jl_value_t *r;
JL_TRY {
const char *filename = "none";
jl_value_t *ast = jl_parse_input_line(str, strlen(str),
filename, strlen(filename));
JL_GC_PUSH1(&ast);
size_t last_age = jl_get_ptls_states()->world_age;
jl_get_ptls_states()->world_age = jl_get_world_counter();
r = jl_toplevel_eval_in(jl_main_module, ast);
jl_get_ptls_states()->world_age = last_age;
JL_GC_POP();
jl_exception_clear();
}
JL_CATCH {
r = NULL;
}
return r;
}
DLLEXPORT void *jl_eval_string(char *str)
{
#ifdef COPY_STACKS
jl_root_task->stackbase = (char*)&str;
if (jl_setjmp(jl_root_task->base_ctx, 1)) {
jl_switch_stack(jl_current_task, jl_jmp_target);
}
#endif
jl_value_t *r;
JL_TRY {
jl_value_t *ast = jl_parse_input_line(str);
JL_GC_PUSH1(&ast);
r = jl_toplevel_eval(ast);
JL_GC_POP();
}
JL_CATCH {
//jl_show(jl_stderr_obj(), jl_exception_in_transit);
r = NULL;
}
return r;
}
static int return_callback(int count, int key) {
static int consecutive_returns = 0;
if (rl_point > prompt_length && rl_point == rl_end &&
rl_line_buffer[rl_point-prompt_length-1] == '\n')
consecutive_returns++;
else
consecutive_returns = 0;
add_history_temporary(rl_line_buffer);
rl_ast = jl_parse_input_line(rl_line_buffer);
rl_done = !rl_ast || !jl_is_expr(rl_ast) ||
(((jl_expr_t*)rl_ast)->head != jl_continue_sym) ||
consecutive_returns > 1;
if (!rl_done) {
newline_callback(count, key);
} else {
reset_indent();
rl_point = rl_end;
rl_redisplay();
}
return 0;
}