// this is for parsing one expression out of a string, keeping track of
// the current position.
JL_DLLEXPORT jl_value_t *jl_parse_string(const char *str, size_t len,
int pos0, int greedy)
{
JL_TIMING(PARSING);
if (pos0 < 0 || pos0 > len) {
jl_array_t *buf = jl_pchar_to_array(str, len);
JL_GC_PUSH1(&buf);
// jl_bounds_error roots the arguments.
jl_bounds_error((jl_value_t*)buf, jl_box_long(pos0));
}
jl_ast_context_t *ctx = jl_ast_ctx_enter();
fl_context_t *fl_ctx = &ctx->fl;
value_t s = cvalue_static_cstrn(fl_ctx, str, len);
value_t p = fl_applyn(fl_ctx, 3, symbol_value(symbol(fl_ctx, "jl-parse-one-string")),
s, fixnum(pos0), greedy?fl_ctx->T:fl_ctx->F);
jl_value_t *expr=NULL, *pos1=NULL;
JL_GC_PUSH2(&expr, &pos1);
value_t e = car_(p);
if (e == fl_ctx->FL_EOF)
expr = jl_nothing;
else
expr = scm_to_julia(fl_ctx, e, NULL);
pos1 = jl_box_long(tosize(fl_ctx, cdr_(p), "parse"));
jl_ast_ctx_leave(ctx);
jl_value_t *result = (jl_value_t*)jl_svec2(expr, pos1);
JL_GC_POP();
return result;
}
JL_DLLEXPORT jl_value_t *jl_pchar_to_string(const char *str, size_t len)
{
jl_array_t *a = jl_pchar_to_array(str, len);
JL_GC_PUSH1(&a);
jl_value_t *s = jl_array_to_string(a);
JL_GC_POP();
return s;
}
jl_array_t *jl_takebuf_array(ios_t *s)
{
size_t n;
jl_array_t *a;
if (s->buf == &s->local[0]) {
// small data case. copies, but this can be avoided using the
// technique of jl_readuntil below.
a = jl_pchar_to_array(s->buf, s->size);
ios_trunc(s, 0);
}
else {
char *b = ios_takebuf(s, &n);
a = jl_ptr_to_array_1d(jl_array_uint8_type, b, n-1, 1);
}
return a;
}
jl_array_t *jl_cstr_to_array(char *str)
{
return jl_pchar_to_array(str, strlen(str));
}
