adding code to form an object in the feed-based reader
This commit is contained in:
parent
cdc939fb1d
commit
aab704ac4b
@ -626,6 +626,15 @@ enum hcl_flx_state_t
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};
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typedef enum hcl_flx_state_t hcl_flx_state_t;
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typedef struct hcl_frd_t hcl_frd_t;
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struct hcl_frd_t
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{
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int level;
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int array_level;
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int flagv;
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hcl_cnode_t* obj;
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};
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struct hcl_compiler_t
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{
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/* output handler */
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@ -694,19 +703,14 @@ struct hcl_compiler_t
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struct
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{
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int code;
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union
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/*union
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{
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struct
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{
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int x;
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} xxx;
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struct
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{
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int x;
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} yyy;
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} u;
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} u;*/
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} st[100];
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hcl_ooi_t top;
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struct hcl_frd_t rd;
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} feed;
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/* == COMPILER STACK == */
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430
lib/read.c
430
lib/read.c
@ -2245,6 +2245,8 @@ hcl_cnodetoobj (hcl_t* hcl, hcl_cnode_t* x)
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static void init_feed (hcl_t* hcl)
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{
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HCL_MEMSET (&hcl->c->feed, 0, HCL_SIZEOF(hcl->c->feed));
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hcl->c->feed.lx.state = HCL_FLX_START;
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hcl->c->feed.lx.loc.line = 1;
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hcl->c->feed.lx.loc.colm = 1;
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@ -2253,11 +2255,13 @@ static void init_feed (hcl_t* hcl)
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hcl->c->feed.top = -1;
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}
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static int push_feed_state (hcl_t* hcl, int code)
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/* ------------------------------------------------------------------------ */
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static int fst_push (hcl_t* hcl, int code)
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{
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if (hcl->c->feed.top >= HCL_COUNTOF(hcl->c->feed.st) - 1) /* TODO: use a dynamically allocated stack? */
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{
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hcl_seterrbfmt (hcl, HCL_EBUFFULL, "feed state stack full");
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hcl_seterrbfmt (hcl, HCL_EBUFFULL, "feed stack full");
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return -1;
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}
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@ -2267,12 +2271,408 @@ static int push_feed_state (hcl_t* hcl, int code)
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return 0;
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}
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static void pop_feed_state (hcl_t* hcl)
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static void fst_pop (hcl_t* hcl)
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{
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HCL_ASSERT (hcl, hcl->c->feed.top >= 0);
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hcl->c->feed.top--;
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}
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static int feed_process_token (hcl_t* hcl)
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{
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hcl_frd_t* frd = &hcl->c->feed.rd;
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HCL_DEBUG6 (hcl, "TOKEN LEN %zu=>[%.*js] %d LOC=%d,%d\n", TOKEN_NAME_LEN(hcl), TOKEN_NAME_LEN(hcl), TOKEN_NAME_PTR(hcl), TOKEN_TYPE(hcl), (int)TOKEN_LOC(hcl)->line, (int)TOKEN_LOC(hcl)->colm);
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#if 0
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/* this function read an s-expression non-recursively
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* by manipulating its own stack. */
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int level = 0, array_level = 0, flagv = 0;
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hcl_cnode_t* obj = HCL_NULL;
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#endif
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/*
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while (1)
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{
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redo:
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*/
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switch (TOKEN_TYPE(hcl))
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{
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default:
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hcl_setsynerr (hcl, HCL_SYNERR_ILTOK, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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case HCL_IOTOK_EOF:
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hcl_setsynerr (hcl, HCL_SYNERR_EOF, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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#if 0
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/* this one is special?? */
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case HCL_IOTOK_INCLUDE:
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/* TODO: should i limit where #include can be specified?
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* disallow it inside a list literal or an array literal? */
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GET_TOKEN_WITH_GOTO (hcl, oops);
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if (TOKEN_TYPE(hcl) != HCL_IOTOK_STRLIT)
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{
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hcl_setsynerr (hcl, HCL_SYNERR_STRING, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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if (begin_include(hcl) <= -1) goto oops;
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goto redo;
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#endif
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case HCL_IOTOK_LBRACK: /* [] */
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frd->flagv = 0;
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LIST_FLAG_SET_CONCODE (frd->flagv, HCL_CONCODE_ARRAY);
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goto start_list;
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case HCL_IOTOK_BAPAREN: /* #[ */
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frd->flagv = 0;
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LIST_FLAG_SET_CONCODE (frd->flagv, HCL_CONCODE_BYTEARRAY);
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goto start_list;
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case HCL_IOTOK_LBRACE: /* { */
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frd->flagv = 0;
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LIST_FLAG_SET_CONCODE (frd->flagv, HCL_CONCODE_DIC);
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goto start_list;
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case HCL_IOTOK_QLPAREN: /* #( */
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frd->flagv = 0;
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LIST_FLAG_SET_CONCODE (frd->flagv, HCL_CONCODE_QLIST);
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goto start_list;
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case HCL_IOTOK_LPARCOLON: /* (: */
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frd->flagv = 0;
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LIST_FLAG_SET_CONCODE (frd->flagv, HCL_CONCODE_MLIST);
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goto start_list;
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case HCL_IOTOK_LPAREN: /* ( */
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frd->flagv = 0;
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LIST_FLAG_SET_CONCODE (frd->flagv, HCL_CONCODE_XLIST);
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start_list:
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if (frd->level >= HCL_TYPE_MAX(int))
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{
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/* the nesting frd->level has become too deep */
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hcl_setsynerr (hcl, HCL_SYNERR_NESTING, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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/* push some data to simulate recursion into
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* a list literal or an array literal */
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if (enter_list(hcl, TOKEN_LOC(hcl), frd->flagv) <= -1) goto oops;
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frd->level++;
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if (LIST_FLAG_GET_CONCODE(frd->flagv) == HCL_CONCODE_ARRAY) frd->array_level++;
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/* read the next token */
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// GET_TOKEN_WITH_GOTO (hcl, oops);
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goto redo;
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case HCL_IOTOK_DOT:
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if (frd->level <= 0 || !can_dot_list(hcl))
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{
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/* cannot have a period:
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* 1. at the top frd->level - not inside ()
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* 2. at the beginning of a list
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* 3. inside an array, byte-array, dictionary, xlist */
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hcl_setsynerr (hcl, HCL_SYNERR_DOTBANNED, TOKEN_LOC(hcl), HCL_NULL);
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goto oops;
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}
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// GET_TOKEN_WITH_GOTO (hcl, oops);
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goto redo;
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case HCL_IOTOK_COLON:
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if (frd->level <= 0 || !can_colon_list(hcl))
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{
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hcl_setsynerr (hcl, HCL_SYNERR_COLONBANNED, TOKEN_LOC(hcl), HCL_NULL);
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goto oops;
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}
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// GET_TOKEN_WITH_GOTO (hcl, oops);
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goto redo;
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case HCL_IOTOK_COMMA:
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if (frd->level <= 0 || !can_comma_list(hcl))
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{
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hcl_setsynerr (hcl, HCL_SYNERR_COMMABANNED, TOKEN_LOC(hcl), HCL_NULL);
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goto oops;
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}
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// GET_TOKEN_WITH_GOTO (hcl, oops);
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goto redo;
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case HCL_IOTOK_RPAREN: /* xlist (), qlist #() */
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case HCL_IOTOK_RBRACK: /* bytearray #[], array[] */
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case HCL_IOTOK_RBRACE: /* dictionary {} */
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{
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static struct
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{
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int closer;
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hcl_synerrnum_t synerr;
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} req[] =
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{
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{ HCL_IOTOK_RPAREN, HCL_SYNERR_RPAREN }, /* XLIST ( ) */
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{ HCL_IOTOK_RPAREN, HCL_SYNERR_RPAREN }, /* MLIST (: ) */
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{ HCL_IOTOK_RBRACK, HCL_SYNERR_RBRACK }, /* ARRAY [ ] */
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{ HCL_IOTOK_RBRACK, HCL_SYNERR_RBRACK }, /* BYTEARRAY #[ ] */
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{ HCL_IOTOK_RBRACE, HCL_SYNERR_RBRACE }, /* DIC { } */
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{ HCL_IOTOK_RPAREN, HCL_SYNERR_RPAREN } /* QLIST #( ) */
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};
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int oldflagv;
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int concode;
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if (frd->level <= 0)
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{
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hcl_setsynerr (hcl, HCL_SYNERR_UNBALPBB, TOKEN_LOC(hcl), HCL_NULL);
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goto oops;
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}
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concode = LIST_FLAG_GET_CONCODE(frd->flagv);
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if (req[concode].closer != TOKEN_TYPE(hcl))
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{
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hcl_setsynerr (hcl, req[concode].synerr, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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#if 0
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if ((flagv & QUOTED) || frd->level <= 0)
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{
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/* the right parenthesis can never appear while
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* 'quoted' is true. 'quoted' is set to false when
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* entering a normal list. 'quoted' is set to true
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* when entering a quoted list. a quoted list does
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* not have an explicit right parenthesis.
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* so the right parenthesis can only pair up with
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* the left parenthesis for the normal list.
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*
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* For example, '(1 2 3 ') 5 6)
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*
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* this condition is triggerred when the first ) is
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* met after the second quote.
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*
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* also it is illegal to have the right parenthesis
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* with no opening(left) parenthesis, which is
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* indicated by frd->level<=0.
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*/
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hcl_setsynerr (hcl, HCL_SYNERR_LPAREN, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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#endif
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frd->obj =leave_list(hcl, &frd->flagv, &oldflagv);
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frd->level--;
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if (LIST_FLAG_GET_CONCODE(oldflagv) == HCL_CONCODE_ARRAY) frd->array_level--;
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break;
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}
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case HCL_IOTOK_VBAR:
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/* TODO: think wheter to allow | | inside a quoted list... */
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/* TODO: revise this part ... */
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if (frd->array_level > 0) /* TODO: this check is wrong... i think .. */
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{
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hcl_setsynerr (hcl, HCL_SYNERR_VBARBANNED, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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frd->obj =read_vlist(hcl);
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break;
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case HCL_IOTOK_NIL:
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frd->obj =hcl_makecnodenil(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_TRUE:
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frd->obj =hcl_makecnodetrue(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_FALSE:
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frd->obj =hcl_makecnodefalse(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_SELF:
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frd->obj =hcl_makecnodeself(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_SUPER:
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frd->obj =hcl_makecnodesuper(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_ELLIPSIS:
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frd->obj =hcl_makecnodeellipsis(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_TRPCOLONS:
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frd->obj =hcl_makecnodetrpcolons(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_DCSTAR:
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frd->obj =hcl_makecnodedcstar(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_SMPTRLIT:
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{
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hcl_oow_t i;
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hcl_oow_t v = 0;
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HCL_ASSERT (hcl, TOKEN_NAME_LEN(hcl) >= 3);
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for (i = 2; i < TOKEN_NAME_LEN(hcl); i++)
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{
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HCL_ASSERT (hcl, is_xdigitchar(TOKEN_NAME_CHAR(hcl, i)));
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v = v * 16 + CHAR_TO_NUM(TOKEN_NAME_CHAR(hcl, i), 16);
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}
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if (!HCL_IN_SMPTR_RANGE(v))
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{
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hcl_setsynerr (hcl, HCL_SYNERR_SMPTRLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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frd->obj =hcl_makecnodesmptrlit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl), v);
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break;
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}
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case HCL_IOTOK_ERRLIT:
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{
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hcl_oow_t i;
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hcl_ooi_t v = 0;
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HCL_ASSERT (hcl, TOKEN_NAME_LEN(hcl) >= 3);
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for (i = 2; i < TOKEN_NAME_LEN(hcl); i++)
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{
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HCL_ASSERT (hcl, is_digitchar(TOKEN_NAME_CHAR(hcl, i)));
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v = v * 10 + CHAR_TO_NUM(TOKEN_NAME_CHAR(hcl, i), 10);
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if (v > HCL_ERROR_MAX)
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{
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hcl_setsynerr (hcl, HCL_SYNERR_ERRLIT, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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goto oops;
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}
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}
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frd->obj =hcl_makecnodeerrlit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl), v);
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break;
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}
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case HCL_IOTOK_CHARLIT:
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frd->obj =hcl_makecnodecharlit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl), TOKEN_NAME_CHAR(hcl, 0));
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break;
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case HCL_IOTOK_NUMLIT:
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frd->obj =hcl_makecnodenumlit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_RADNUMLIT:
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frd->obj =hcl_makecnoderadnumlit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_FPDECLIT:
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frd->obj =hcl_makecnodefpdeclit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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/*
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case HCL_IOTOK_REAL:
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frd->obj =hcl_makerealnum(hcl, HCL_IOTOK_RVAL(hcl));
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break;
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*/
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case HCL_IOTOK_STRLIT:
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frd->obj =hcl_makecnodestrlit(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_IDENT:
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frd->obj =hcl_makecnodesymbol(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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case HCL_IOTOK_IDENT_DOTTED:
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frd->obj =hcl_makecnodedsymbol(hcl, TOKEN_LOC(hcl), TOKEN_NAME(hcl));
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break;
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}
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if (!frd->obj) goto oops;
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#if 0
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/* check if the element is read for a quoted list */
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while (flagv & QUOTED)
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{
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int oldflagv;
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HCL_ASSERT (hcl, frd->level > 0);
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/* if so, append the element read into the quote list */
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if (chain_to_list(hcl, obj) <= -1) goto oops;
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/* exit out of the quoted list. the quoted list can have one element only. */
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obj = leave_list(hcl, &flagv, &oldflagv);
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/* one frd->level up toward the top */
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frd->level--;
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if (LIST_FLAG_GET_CONCODE(oldflagv) == HCL_CONCODE_ARRAY) frd->array_level--;
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}
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#endif
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/* check if we are at the top frd->level */
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if (frd->level <= 0)
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{
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// TOOD: callback with frd->obj in case it's complete
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/* upon exit, we must be at the top level */
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HCL_ASSERT (hcl, frd->level == 0);
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HCL_ASSERT (hcl, frd->array_level == 0);
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HCL_ASSERT (hcl, hcl->c->r.st == HCL_NULL);
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HCL_ASSERT (hcl, frd->obj != HCL_NULL);
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hcl_logbfmt (hcl, HCL_LOG_STDERR, "GOT CNODE %p\n", frd->obj);
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}
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else
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{
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/* if not, append the element read into the current list.
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* if we are not at the top frd->level, we must be in a list */
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if (chain_to_list(hcl, frd->obj) <= -1) goto oops;
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/* because it has been chained to the list, it belongs to the current stack top.
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* mark that obj is not stand-alone by nullifying it. without this, if a jump
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* is made to oops, the momory block pointed to by obj may get freed twice. */
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frd->obj = HCL_NULL;
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||||
clear_comma_colon_flag (hcl);
|
||||
}
|
||||
|
||||
#if 0
|
||||
/* read the next token */
|
||||
GET_TOKEN_WITH_GOTO (hcl, oops);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
redo:
|
||||
return 0;
|
||||
|
||||
oops:
|
||||
if (frd->obj)
|
||||
{
|
||||
hcl_freecnode (hcl, frd->obj);
|
||||
frd->obj = HCL_NULL;
|
||||
}
|
||||
|
||||
/* clean up the reader stack for a list */
|
||||
while (hcl->c->r.st)
|
||||
{
|
||||
hcl_rstl_t* rstl;
|
||||
rstl = hcl->c->r.st;
|
||||
hcl->c->r.st = rstl->prev;
|
||||
if (rstl->head) hcl_freecnode (hcl, rstl->head);
|
||||
hcl_freemem (hcl, rstl);
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/* ------------------------------------------------------------------------ */
|
||||
|
||||
struct delim_token_t
|
||||
{
|
||||
const char* t_value;
|
||||
@ -2328,10 +2728,8 @@ static int find_delim_token_char (hcl_t* hcl, const hcl_ooci_t c, int row_start,
|
||||
|
||||
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;
|
||||
@ -2340,19 +2738,18 @@ static int find_delim_token_char (hcl_t* hcl, const hcl_ooci_t c, int row_start,
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
int n;
|
||||
SET_TOKEN_TYPE (hcl, type);
|
||||
|
||||
HCL_DEBUG6 (hcl, "TOKEN LEN %zu=>[%.*js] %d LOC=%d,%d\n", TOKEN_NAME_LEN(hcl), TOKEN_NAME_LEN(hcl), TOKEN_NAME_PTR(hcl), TOKEN_TYPE(hcl), (int)TOKEN_LOC(hcl)->line, (int)TOKEN_LOC(hcl)->colm);
|
||||
/* TOOD: fire token callback or something */
|
||||
n = feed_process_token(hcl);
|
||||
|
||||
hcl->c->feed.lx.state = HCL_FLX_START;
|
||||
return 0;
|
||||
return n;
|
||||
}
|
||||
|
||||
static int feed_wrap_up_with_char (hcl_t* hcl, hcl_ooci_t c, hcl_iotok_type_t type)
|
||||
@ -2386,6 +2783,9 @@ static int feed_continue_with_char (hcl_t* hcl, hcl_ooci_t c, hcl_flx_state_t st
|
||||
#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)
|
||||
|
||||
/* ------------------------------------------------------------------------ */
|
||||
|
||||
/* short-cuts to basic lexer data */
|
||||
#define FLX_STATE(hcl) ((hcl)->c->feed.lx.state)
|
||||
#define FLX_LOC(hcl) (&((hcl)->c->feed.lx.loc))
|
||||
|
||||
@ -2526,7 +2926,6 @@ static int flx_start (hcl_t* hcl, hcl_ooci_t c)
|
||||
init_flx_pi (FLX_PI(hcl));
|
||||
FEED_CONTINUE (hcl, HCL_FLX_PLAIN_IDENT);
|
||||
goto not_consumed;
|
||||
|
||||
}
|
||||
|
||||
consumed:
|
||||
@ -3201,6 +3600,8 @@ not_consumed:
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------ */
|
||||
|
||||
static int feed_char (hcl_t* hcl, hcl_ooci_t c)
|
||||
{
|
||||
switch (FLX_STATE(hcl))
|
||||
@ -3218,14 +3619,13 @@ static int feed_char (hcl_t* hcl, hcl_ooci_t c)
|
||||
case HCL_FLX_SIGNED_TOKEN: return flx_signed_token(hcl, c);
|
||||
|
||||
default:
|
||||
/* INVALID STATE */
|
||||
HCL_ASSERT (hcl, !"internal error - this must never happen");
|
||||
hcl_seterrnum (hcl, HCL_EINTERN);
|
||||
/* unknown state */
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
return 0;
|
||||
HCL_ASSERT (hcl, !"internal error - this must never happen");
|
||||
hcl_seterrnum (hcl, HCL_EINTERN);
|
||||
return -1;
|
||||
}
|
||||
|
||||
int hcl_feed (hcl_t* hcl, const hcl_ooch_t* data, hcl_oow_t len)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user