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implementing hcl_feed()

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hyung-hwan
2022-05-25 14:23:43 +00:00
parent 982a7c1592
commit 60c9fe8ac9
4 changed files with 706 additions and 55 deletions
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26
bin/main.c
View File

@ -855,16 +855,6 @@ int main (int argc, char* argv[])
* -- instead of returning -1 immediately. --*/
set_signal (SIGINT, handle_sigint);
#if 0
hcl_prbfmt (hcl, "this is good %s %10hs %hs\n", "whole new world. 1234567890 from this point onward, any failure leasd to jumping to oops label", "as이거 좋은거잖아dkfjsdakfjsadklfjasd", "1111");
{
hcl_uch_t fmt[] = {'G','G','%','l','s', 'a','b','c','-','-','%','0','2','0','x','\0'};
hcl_uch_t ustr[] = {'A','B','C', 'X','Y','Z','Q','Q','\0'};
hcl_prufmt (hcl, fmt, ustr, 0x6789);
hcl_logufmt (hcl, HCL_LOG_WARN, fmt, ustr, 0x6789);
}
#endif
#if 0
// TODO: change the option name
// in the INTERACTIVE mode, the compiler generates MAKE_FUNCTION for lambda functions.
@ -879,6 +869,22 @@ hcl_logufmt (hcl, HCL_LOG_WARN, fmt, ustr, 0x6789);
cflags = 0;
if (xtn->reader_istty) cflags = HCL_COMPILE_CLEAR_CODE | HCL_COMPILE_CLEAR_FNBLK;
#if 0
{
hcl_oow_t slen;
hcl_ooch_t* scr = hcl_dupbtooocstr(hcl, "(:::::..##..|,:{{}}..\n....)(#(#[", &slen);
if (hcl_feed (hcl, scr, slen) <= -1)
{
if (hcl->errnum == HCL_ESYNERR) print_synerr (hcl);
else hcl_logbfmt (hcl, HCL_LOG_STDERR, "ERROR: cannot feed - [%d] %js\n", hcl_geterrnum(hcl), hcl_geterrmsg(hcl));
}
hcl_endfeed (hcl);
}
hcl_close (hcl);
return 0;
#endif
while (1)
{
hcl_cnode_t* obj;

56
lib/hcl-prv.h
View File

@ -149,12 +149,14 @@ enum hcl_iotok_type_t
HCL_IOTOK_IDENT,
HCL_IOTOK_IDENT_DOTTED,
HCL_IOTOK_DOT,
HCL_IOTOK_ELLIPSIS,
HCL_IOTOK_COLON,
HCL_IOTOK_DOT, /* . */
HCL_IOTOK_DBLDOTS, /* .. */
HCL_IOTOK_ELLIPSIS, /* ... */
HCL_IOTOK_COLON, /* : */
HCL_IOTOK_DBLCOLONS, /* :: */
HCL_IOTOK_TRPCOLONS, /* ::: */
HCL_IOTOK_DCSTAR, /* ::* */
HCL_IOTOK_COMMA,
HCL_IOTOK_COMMA, /* , */
HCL_IOTOK_LPAREN, /* ( */
HCL_IOTOK_RPAREN, /* ) */
HCL_IOTOK_LPARCOLON, /* (: */
@ -496,6 +498,23 @@ struct hcl_rstl_t
hcl_rstl_t* prev;
};
typedef struct hcl_feed_dt_t hcl_feed_dt_t;
struct hcl_feed_dt_t
{
int row_start;
int row_end;
int col_next;
};
enum hcl_feed_lx_state_t
{
HCL_FEED_LX_START,
HCL_FEED_LX_DELIM_TOKEN,
HCL_FEED_LX_COMMENT,
HCL_FEED_LX_SHARP_TOKEN
};
typedef enum hcl_feed_lx_state_t hcl_feed_lx_state_t;
struct hcl_compiler_t
{
/* output handler */
@ -541,6 +560,33 @@ struct hcl_compiler_t
} r; /* reading */
/* == END READER == */
struct
{
struct
{
hcl_feed_lx_state_t state;
hcl_ioloc_t loc;
} lx;
hcl_feed_dt_t dt; /* delimiter token */
struct
{
int code;
union
{
struct
{
int x;
} xxx;
struct
{
int x;
} yyy;
} u;
} st[100];
hcl_ooi_t top;
} feed;
/* == COMPILER STACK == */
struct
{
@ -577,6 +623,8 @@ struct hcl_compiler_t
hcl_clsblk_info_t* info;
hcl_oow_t info_capa;
} clsblk; /* class block */
};
#endif

9
lib/hcl.h
View File

@ -2192,6 +2192,15 @@ HCL_EXPORT hcl_ooi_t hcl_proutufmt (
);
#if defined(HCL_INCLUDE_COMPILER)
HCL_EXPORT int hcl_feed (
hcl_t* hcl,
const hcl_ooch_t* data,
hcl_oow_t len
);
#define hcl_endfeed(hcl) (hcl_feed((hcl), HCL_NULL, 0))
HCL_EXPORT int hcl_compile (
hcl_t* hcl,
hcl_cnode_t* obj,

668
lib/read.c
View File

@ -289,6 +289,12 @@ static HCL_INLINE int is_spacechar (hcl_ooci_t c)
}
}
static HCL_INLINE int is_linebreak (hcl_ooci_t c)
{
/* TODO: different line end conventions? */
return c == '\n';
}
static HCL_INLINE int is_alphachar (hcl_ooci_t c)
{
/* TODO: support full unicode */
@ -313,11 +319,12 @@ static HCL_INLINE int is_alnumchar (hcl_ooci_t c)
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9');
}
static HCL_INLINE int is_delimiter (hcl_ooci_t c)
static HCL_INLINE int is_delimchar (hcl_ooci_t c)
{
return c == '(' || c == ')' || c == '[' || c == ']' || c == '{' || c == '}' ||
c == '\"' || c == '\'' || c == '#' || c == ';' || c == '|' || c == '.' ||
c == ',' || c == ':' || is_spacechar(c) || c == HCL_UCI_EOF;
c == ';' || c == '|' || c == ',' || c == '.' || c == ':' ||
/* the first characters of tokens in delim_token_tab up to this point */
c == '#' || c == '\"' || c == '\'' || is_spacechar(c) || c == HCL_UCI_EOF;
}
static int copy_string_to (hcl_t* hcl, const hcl_oocs_t* src, hcl_oocs_t* dst, hcl_oow_t* dst_capa, int append, hcl_ooch_t add_delim)
@ -733,14 +740,14 @@ static int get_radix_number (hcl_t* hcl, hcl_ooci_t rc, int radix)
}
while (CHAR_TO_NUM(c, radix) < radix);
if (!is_delimiter(c))
if (!is_delimchar(c))
{
do
{
ADD_TOKEN_CHAR(hcl, c);
GET_CHAR_TO (hcl, c);
}
while (!is_delimiter(c));
while (!is_delimchar(c));
hcl_setsynerrbfmt (hcl, HCL_SYNERR_NUMLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl),
"invalid digit in radixed number in %.*js", hcl->c->tok.name.len, hcl->c->tok.name.ptr);
@ -763,19 +770,26 @@ static int get_sharp_token (hcl_t* hcl)
GET_CHAR_TO (hcl, c);
/*
* #bBBBB binary
* #oOOOO octal
* #xXXXX hexadecimal
* #oOOOO octal
* #bBBBB binary
* #eDDD error
* #pHHH smptr
* #nil
* #true
* #false
* #include
* #\C character
* #\xHHHH unicode character
* #\UHHHH unicode character
* #\uHHHH unicode character
* #\backspace
* #\linefeed
* #\newline
* #\nul
* #\page
* #\return
* #\rubout
* #\space
* #\tab
* #\vtab
* #include
* #[ ] byte array
* #( ) qlist
*/
@ -809,7 +823,7 @@ static int get_sharp_token (hcl_t* hcl)
ADD_TOKEN_CHAR (hcl, '\\');
GET_CHAR_TO (hcl, c);
if (is_delimiter(c))
if (is_delimchar(c))
{
hcl_setsynerrbfmt (hcl, HCL_SYNERR_CHARLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl),
"no valid character after #\\ in %.*js", hcl->c->tok.name.len, hcl->c->tok.name.ptr);
@ -822,7 +836,7 @@ static int get_sharp_token (hcl_t* hcl)
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
}
while (!is_delimiter(c));
while (!is_delimchar(c));
if (TOKEN_NAME_LEN(hcl) >= 4)
{
@ -849,10 +863,8 @@ static int get_sharp_token (hcl_t* hcl)
"invalid hexadecimal character in %.*js", TOKEN_NAME_LEN(hcl), TOKEN_NAME_PTR(hcl));
return -1;
}
c = c * 16 + CHAR_TO_NUM(hcl->c->tok.name.ptr[i], 16); /* don't care if it is for 'p' */
}
}
#if (HCL_SIZEOF_OOCH_T >= 2)
else if (TOKEN_NAME_CHAR(hcl, 2) == 'u')
@ -868,26 +880,22 @@ static int get_sharp_token (hcl_t* hcl)
goto hexcharlit;
}
#endif
else if (does_token_name_match(hcl, VOCA_SPACE))
else if (does_token_name_match(hcl, VOCA_BACKSPACE))
{
c = ' ';
c = '\b';
}
else if (does_token_name_match(hcl, VOCA_LINEFEED))
{
c = '\n';
}
else if (does_token_name_match(hcl, VOCA_NEWLINE))
{
/* TODO: convert it to host newline convention. how to handle if it's composed of 2 letters like \r\n? */
c = '\n';
}
else if (does_token_name_match(hcl, VOCA_BACKSPACE))
else if (does_token_name_match(hcl, VOCA_NUL)) /* null character. not #nil */
{
c = '\b';
}
else if (does_token_name_match(hcl, VOCA_TAB))
{
c = '\t';
}
else if (does_token_name_match(hcl, VOCA_LINEFEED))
{
c = '\n';
c = '\0';
}
else if (does_token_name_match(hcl, VOCA_PAGE))
{
@ -897,18 +905,22 @@ static int get_sharp_token (hcl_t* hcl)
{
c = '\r';
}
else if (does_token_name_match(hcl, VOCA_NUL)) /* null character. not #nil */
else if (does_token_name_match(hcl, VOCA_RUBOUT))
{
c = '\0';
c = '\x7F'; /* DEL */
}
else if (does_token_name_match(hcl, VOCA_SPACE))
{
c = ' ';
}
else if (does_token_name_match(hcl, VOCA_TAB))
{
c = '\t';
}
else if (does_token_name_match(hcl, VOCA_VTAB))
{
c = '\v';
}
else if (does_token_name_match(hcl, VOCA_RUBOUT))
{
c = '\x7F'; /* DEL */
}
else
{
hcl_setsynerrbfmt (hcl, HCL_SYNERR_CHARLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl),
@ -945,7 +957,7 @@ static int get_sharp_token (hcl_t* hcl)
break;
default:
if (is_delimiter(c))
if (is_delimchar(c))
{
/* EOF, whitespace, etc */
hcl_setsynerrbfmt (hcl, HCL_SYNERR_HASHLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl),
@ -954,13 +966,12 @@ static int get_sharp_token (hcl_t* hcl)
}
ADD_TOKEN_CHAR (hcl, '#');
long_name:
do
{
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
}
while (!is_delimiter(c));
while (!is_delimchar(c));
if (does_token_name_match(hcl, VOCA_INCLUDE))
{
@ -1275,7 +1286,7 @@ retry:
default:
ident:
if (is_delimiter(c))
if (is_delimchar(c))
{
hcl_setsynerrbfmt (hcl, HCL_SYNERR_ILCHR, TOKEN_LOC(hcl), HCL_NULL, "illegal character %jc encountered", c);
return -1;
@ -1304,7 +1315,7 @@ retry:
read_more_seg:
GET_CHAR_TO (hcl, c);
if (!is_delimiter(c))
if (!is_delimchar(c))
{
hcl_oow_t start;
hcl_oocs_t seg;
@ -1318,7 +1329,7 @@ retry:
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
}
while (!is_delimiter(c));
while (!is_delimchar(c));
seg.ptr = &TOKEN_NAME_CHAR(hcl,start);
seg.len = TOKEN_NAME_LEN(hcl) - start;
@ -1340,7 +1351,7 @@ retry:
}
break;
}
else if (is_delimiter(c))
else if (is_delimchar(c))
{
unget_char (hcl, &hcl->c->lxc);
break;
@ -2412,3 +2423,580 @@ void hcl_detachio (hcl_t* hcl)
}
}
/* ---------------------------------------------------------------------- */
static void init_feed (hcl_t* hcl)
{
hcl->c->feed.lx.state = HCL_FEED_LX_START;
hcl->c->feed.lx.loc.line = 1;
hcl->c->feed.lx.loc.colm = 1;
hcl->c->feed.lx.loc.file = HCL_NULL;
hcl->c->feed.top = -1;
}
static int push_feed_state (hcl_t* hcl, int code)
{
if (hcl->c->feed.top >= HCL_COUNTOF(hcl->c->feed.st) - 1) /* TODO: use a dynamically allocated stack? */
{
hcl_seterrbfmt (hcl, HCL_EBUFFULL, "feed state stack full");
return -1;
}
hcl->c->feed.top++;
HCL_MEMSET (&hcl->c->feed.st[hcl->c->feed.top], 0, HCL_SIZEOF(hcl->c->feed.st[hcl->c->feed.top]));
hcl->c->feed.st[hcl->c->feed.top].code = code;
return 0;
}
static void pop_feed_state (hcl_t* hcl)
{
HCL_ASSERT (hcl, hcl->c->feed.top >= 0);
hcl->c->feed.top--;
}
struct delim_token_t
{
const char* t_value;
hcl_oow_t t_len;
hcl_iotok_type_t t_type;
};
typedef struct delim_token_t delim_token_t;
static delim_token_t delim_token_tab[] =
{
/* [NOTE 1]
* if you add a new token, ensure the first character is listed in is_delimchar()
*
* [NOTE 2]
* for the implementation limitation in find_delim_token_char(),
* the entries in this table must be laid out in a certain way.
*
* Group the items with the same prefix together.
* List the shorter before the longer items in the same group.
* The length must not differ by greater than 1 between 2 items in the same group.
*/
{ "(", 1, HCL_IOTOK_LPAREN },
{ "(:", 2, HCL_IOTOK_LPARCOLON },
{ ")", 1, HCL_IOTOK_RPAREN },
{ "[", 1, HCL_IOTOK_LBRACK },
{ "]", 1, HCL_IOTOK_RBRACK },
{ "{", 1, HCL_IOTOK_LBRACE },
{ "}", 1, HCL_IOTOK_RBRACE },
{ "|", 1, HCL_IOTOK_VBAR },
{ ",", 1, HCL_IOTOK_COMMA },
{ ".", 1, HCL_IOTOK_DOT },
{ "..", 2, HCL_IOTOK_DBLDOTS },
{ "...", 3, HCL_IOTOK_ELLIPSIS },
{ ":", 1, HCL_IOTOK_COLON },
{ "::", 2, HCL_IOTOK_DBLCOLONS },
{ "::*", 3, HCL_IOTOK_DCSTAR },
{ ":::", 3, HCL_IOTOK_TRPCOLONS }
};
static int find_delim_token_char (hcl_t* hcl, const hcl_ooci_t c, int row_start, int row_end, int col, hcl_feed_dt_t* dt)
{
int found = 0, i;
for (i = row_start; i <= row_end; i++)
{
//printf (">>> %d %d %d col=>%d c=>%jc\n", i, row_start, row_end, col, c);
if (col < delim_token_tab[i].t_len && c == delim_token_tab[i].t_value[col])
{
//printf ("MATCH [%jc] [%jc]\n", c, delim_token_tab[i].t_value[col]);
if (!found) dt->row_start = i;
dt->row_end = i;
found = 1;
}
else if (found) break;
}
if (found) dt->col_next = col + 1;
//printf ("**** return %d %d\n", dt->row_start, dt->row_end);
return found;
}
static HCL_INLINE int feed_wrap_up (hcl_t* hcl, hcl_iotok_type_t type)
{
SET_TOKEN_TYPE (hcl, type);
HCL_DEBUG4 (hcl, "TOKEN LEN %zu=>[%.*js] %d\n", TOKEN_NAME_LEN(hcl), TOKEN_NAME_LEN(hcl), TOKEN_NAME_PTR(hcl), TOKEN_TYPE(hcl));
/* TOOD: fire token callback or something */
hcl->c->feed.lx.state = HCL_FEED_LX_START;
return 0;
}
static int feed_wrap_up_with_char (hcl_t* hcl, hcl_ooci_t c, hcl_iotok_type_t type)
{
ADD_TOKEN_CHAR (hcl, c);
return feed_wrap_up(hcl, type);
}
static int feed_wrap_up_with_str (hcl_t* hcl, const hcl_ooch_t* str, hcl_oow_t len, hcl_iotok_type_t type)
{
ADD_TOKEN_STR (hcl, str, len);
return feed_wrap_up(hcl, type);
}
static int feed_continue (hcl_t* hcl, hcl_feed_lx_state_t state)
{
hcl->c->feed.lx.state = state;
return 0;
}
static int feed_continue_with_char (hcl_t* hcl, hcl_ooci_t c, hcl_feed_lx_state_t state)
{
ADD_TOKEN_CHAR (hcl, c);
hcl->c->feed.lx.state = state;
return 0;
}
#define FEED_WRAP_UP(hcl, type) do { if (feed_wrap_up(hcl, type) <= -1) return -1; } while(0)
#define FEED_WRAP_UP_WITH_CHAR(hcl, c, type) do { if (feed_wrap_up_with_char(hcl, c, type) <= -1) return -1; } while(0)
#define FEED_WRAP_UP_WITH_CHARS(hcl, str, len, type) do { if (feed_wrap_up_with_str(hcl, str, len, type) <= -1) return -1; } while(0)
#define FEED_CONTINUE(hcl, state) do { if (feed_continue(hcl, state) <= -1) return -1; } while(0)
#define FEED_CONTINUE_WITH_CHAR(hcl, c, state) do { if (feed_continue_with_char(hcl, c, state) <= -1) return -1; } while(0)
#define FEED_LX_STATE(hcl) ((hcl)->c->feed.lx.state)
#define FEED_LX_LOC(hcl) (&((hcl)->c->feed.lx.loc))
static int feed_lx_start (hcl_t* hcl, hcl_ooci_t c)
{
HCL_ASSERT (hcl, FEED_LX_STATE(hcl) == HCL_FEED_LX_START);
/* clear the token name, reset its location */
SET_TOKEN_TYPE (hcl, HCL_IOTOK_EOF); /* is it correct? */
CLEAR_TOKEN_NAME (hcl);
//HCL_DEBUG1 (hcl, "XXX[%jc]\n", c);
if (find_delim_token_char(hcl, c, 0, HCL_COUNTOF(delim_token_tab) - 1, 0, &hcl->c->feed.dt))
{
/* the character is one of the first character of a delimiter token */
if (hcl->c->feed.dt.row_start == hcl->c->feed.dt.row_end && hcl->c->feed.dt.col_next == delim_token_tab[hcl->c->feed.dt.row_start].t_len)
{
FEED_WRAP_UP_WITH_CHAR (hcl, c, delim_token_tab[hcl->c->feed.dt.row_start].t_type);
}
else
{
FEED_CONTINUE_WITH_CHAR (hcl, c, HCL_FEED_LX_DELIM_TOKEN); /* consume c and move to HCL_FEED_LX_DELIM_TOKEN state */
}
goto consumed;
}
switch (c)
{
case HCL_OOCI_EOF:
{
int n;
#if 0
n = end_include(hcl);
if (n <= -1) return -1;
if (n >= 1) goto retry;
#endif
FEED_WRAP_UP_WITH_CHARS (hcl, vocas[VOCA_EOF].str, vocas[VOCA_EOF].len, HCL_IOTOK_EOF);
break;
}
case ';':
FEED_CONTINUE_WITH_CHAR (hcl, c, HCL_FEED_LX_COMMENT);
break;
case '#':
FEED_CONTINUE_WITH_CHAR (hcl, c, HCL_FEED_LX_SHARP_TOKEN);
break;
#if 0
case '\"':
if (get_string(hcl, '\"', '\\', 0, 0) <= -1) return -1;
break;
case '\'':
if (get_string(hcl, '\'', '\\', 0, 0) <= -1) return -1;
if (hcl->c->tok.name.len != 1)
{
hcl_setsynerr (hcl, HCL_SYNERR_CHARLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
return -1;
}
SET_TOKEN_TYPE (hcl, HCL_IOTOK_CHARLIT);
break;
case '#':
if (get_sharp_token(hcl) <= -1) return -1;
break;
case '+':
case '-':
oldc = c;
GET_CHAR_TO (hcl, c);
if(is_digitchar(c))
{
unget_char (hcl, &hcl->c->lxc);
c = oldc;
goto numlit;
}
else if (c == '#')
{
int radix;
hcl_iolxc_t sharp;
sharp = hcl->c->lxc; /* back up '#' */
GET_CHAR_TO (hcl, c);
switch (c)
{
case 'b':
radix = 2;
goto radnumlit;
case 'o':
radix = 8;
goto radnumlit;
case 'x':
radix = 16;
radnumlit:
ADD_TOKEN_CHAR (hcl, oldc);
if (get_radix_number(hcl, c, radix) <= -1) return -1;
break;
default:
unget_char (hcl, &hcl->c->lxc);
unget_char (hcl, &sharp);
c = oldc;
goto ident;
}
}
else
{
unget_char (hcl, &hcl->c->lxc);
c = oldc;
goto ident;
}
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
numlit:
SET_TOKEN_TYPE (hcl, HCL_IOTOK_NUMLIT);
while (1)
{
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
if (TOKEN_TYPE(hcl) == HCL_IOTOK_NUMLIT && c == '.')
{
SET_TOKEN_TYPE (hcl, HCL_IOTOK_FPDECLIT);
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
if (!is_digitchar(c))
{
/* the first character after the decimal point is not a decimal digit */
hcl_setsynerrbfmt (hcl, HCL_SYNERR_NUMLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl), "invalid numeric literal with no digit after decimal point");
return -1;
}
}
if (!is_digitchar(c))
{
unget_char (hcl, &hcl->c->lxc);
break;
}
}
break;
default:
ident:
if (is_delimchar(c))
{
hcl_setsynerrbfmt (hcl, HCL_SYNERR_ILCHR, TOKEN_LOC(hcl), HCL_NULL, "illegal character %jc encountered", c);
return -1;
}
SET_TOKEN_TYPE (hcl, HCL_IOTOK_IDENT);
while (1)
{
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
if (c == '.')
{
hcl_iolxc_t period;
hcl_iotok_type_t type;
type = classify_ident_token(hcl, TOKEN_NAME(hcl));
if (type != HCL_IOTOK_IDENT)
{
SET_TOKEN_TYPE (hcl, type);
unget_char (hcl, &hcl->c->lxc);
break;
}
period = hcl->c->lxc;
read_more_seg:
GET_CHAR_TO (hcl, c);
if (!is_delimchar(c))
{
hcl_oow_t start;
hcl_oocs_t seg;
SET_TOKEN_TYPE (hcl, HCL_IOTOK_IDENT_DOTTED);
ADD_TOKEN_CHAR (hcl, '.');
start = TOKEN_NAME_LEN(hcl);
do
{
ADD_TOKEN_CHAR (hcl, c);
GET_CHAR_TO (hcl, c);
}
while (!is_delimchar(c));
seg.ptr = &TOKEN_NAME_CHAR(hcl,start);
seg.len = TOKEN_NAME_LEN(hcl) - start;
if (classify_ident_token(hcl, &seg) != HCL_IOTOK_IDENT)
{
hcl_setsynerr (hcl, HCL_SYNERR_MSEGIDENT, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
return -1;
}
if (c == '.') goto read_more_seg;
unget_char (hcl, &hcl->c->lxc);
break;
}
else
{
unget_char (hcl, &hcl->c->lxc);
unget_char (hcl, &period);
}
break;
}
else if (is_delimchar(c))
{
unget_char (hcl, &hcl->c->lxc);
break;
}
}
if (TOKEN_TYPE(hcl) == HCL_IOTOK_IDENT)
{
hcl_iotok_type_t type;
type = classify_ident_token(hcl, TOKEN_NAME(hcl));
SET_TOKEN_TYPE (hcl, type);
}
break;
#endif
}
consumed:
return 1;
not_consumed:
return 0;
}
static int feed_lx_delim_token (hcl_t* hcl, hcl_ooci_t c)
{
if (find_delim_token_char(hcl, c, hcl->c->feed.dt.row_start, hcl->c->feed.dt.row_end, hcl->c->feed.dt.col_next, &hcl->c->feed.dt))
{
if (hcl->c->feed.dt.row_start == hcl->c->feed.dt.row_end && hcl->c->feed.dt.col_next == delim_token_tab[hcl->c->feed.dt.row_start].t_len)
{
/* complete token and switch to the HCL_FEED_LX_START state */
FEED_WRAP_UP_WITH_CHAR (hcl, c, delim_token_tab[hcl->c->feed.dt.row_start].t_type);
}
else
{
ADD_TOKEN_CHAR(hcl, c);
}
goto consumed;
}
else
{
/* the longest match so far */
FEED_WRAP_UP(hcl, delim_token_tab[hcl->c->feed.dt.row_start].t_type);
goto not_consumed;
}
consumed:
return 1;
not_consumed:
return 0;
}
static int feed_lx_comment (hcl_t* hcl, hcl_ooci_t c)
{
if (is_linebreak(c)) FEED_CONTINUE (hcl, HCL_FEED_LX_START);
return 1; /* consumed */
}
static int feed_lx_sharp_token (hcl_t* hcl, hcl_ooci_t c)
{
/*
* #xXXXX hexadecimal
* #oOOOO octal
* #bBBBB binary
* #eDDD error
* #pHHH smptr
* #\C character
* #\xHHHH unicode character
* #\UHHHH unicode character
* #\uHHHH unicode character
* #\backspace
* #\linefeed
* #\newline
* #\nul
* #\page
* #\return
* #\rubout
* #\space
* #\tab
* #\vtab
* #include
* #[ ] byte array
* #( ) qlist
*/
switch (c)
{
case '#':
case '!':
/* ## comment start
* #! also comment start.
* ; comment start */
FEED_CONTINUE_WITH_CHAR (hcl, c, HCL_FEED_LX_COMMENT);
goto consumed;
case '[':
FEED_WRAP_UP_WITH_CHAR (hcl, c, HCL_IOTOK_BAPAREN);
goto consumed;
case '(':
FEED_WRAP_UP_WITH_CHAR (hcl, c, HCL_IOTOK_QLPAREN);
goto consumed;
default:
// TODO: fix this part
if (is_spacechar(c) || c == HCL_UCI_EOF)
hcl_setsynerrbfmt (hcl, HCL_SYNERR_HASHLIT, FEED_LX_LOC(hcl), HCL_NULL,
"no character after the hash sign");
else
hcl_setsynerrbfmt (hcl, HCL_SYNERR_HASHLIT, FEED_LX_LOC(hcl), HCL_NULL,
"invalid character after the hash sign - %jc", c);
return -1;
}
consumed:
return 1;
not_consumed:
return 0;
}
static int feed_char (hcl_t* hcl, hcl_ooci_t c)
{
/* TODO: track line number and column number? */
switch (FEED_LX_STATE(hcl))
{
case HCL_FEED_LX_START: return feed_lx_start(hcl, c);
case HCL_FEED_LX_DELIM_TOKEN: return feed_lx_delim_token(hcl, c);
case HCL_FEED_LX_COMMENT: return feed_lx_comment(hcl, c);
case HCL_FEED_LX_SHARP_TOKEN: return feed_lx_sharp_token(hcl, c);
/*
case HCL_FEED_LX_DQSTR:
return feed_lx_dqstr(hcl, c);
case HCL_FEED_LX_SQSTR:
return feed_lxsqstr(hcl, c);
case HCL_FEED_LX_COMMENT:
break;
case HCL_FEED_LX_CSTR:
break;
case HCL_FEED_LX_DIRECTIVE:
break;
*/
default:
/* INVALID STATE */
break;
}
return 0;
}
int hcl_feed (hcl_t* hcl, const hcl_ooch_t* data, hcl_oow_t len)
{
/* TODO: need to return the number of processed characters?
* need to stop after the first complete expression? */
hcl_oow_t i;
int x;
if (data)
{
for (i = 0; i < len; )
{
x = feed_char(hcl, data[i]);
if (x <= -1) return -1;
i += x;
if (x > 0)
{
if (is_linebreak(data[i]))
{
hcl->c->feed.lx.loc.line++;
hcl->c->feed.lx.loc.colm = 1;
}
else
{
hcl->c->feed.lx.loc.colm++;
}
}
}
}
else
{
for (i = 0; i < 1;)
{
x = feed_char(hcl, HCL_OOCI_EOF);
if (x <= -1) return -1;
i += x;
}
}
return 0;
}
/*
hcl_setopt (ON_EXPRESSION CALLBACK??? );
hcl_feed (hcl, "(hello) (10)", 12);
> on_token
> on_expression
> on_eof
default callback for on_expression?
compile
execute??/ if in the interactive mode? (say it's used as a network protocol. execute each expression when received....)
default callback for on_eof?
execute or terminate?
*/