502 lines
10 KiB
C
502 lines
10 KiB
C
/*
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* $Id: val.c,v 1.37 2006-07-06 15:54:41 bacon Exp $
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*/
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#include <xp/awk/awk_i.h>
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#ifndef XP_AWK_STAND_ALONE
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#include <xp/bas/string.h>
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#include <xp/bas/memory.h>
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#include <xp/bas/assert.h>
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#endif
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static xp_awk_val_nil_t __awk_nil = { XP_AWK_VAL_NIL, 0 };
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xp_awk_val_t* xp_awk_val_nil = (xp_awk_val_t*)&__awk_nil;
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static xp_awk_val_int_t __awk_int[] =
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{
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{ XP_AWK_VAL_INT, 0, -1 },
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{ XP_AWK_VAL_INT, 0, 0 },
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{ XP_AWK_VAL_INT, 0, 1 },
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{ XP_AWK_VAL_INT, 0, 2 },
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{ XP_AWK_VAL_INT, 0, 3 },
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{ XP_AWK_VAL_INT, 0, 4 },
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{ XP_AWK_VAL_INT, 0, 5 },
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{ XP_AWK_VAL_INT, 0, 6 },
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{ XP_AWK_VAL_INT, 0, 7 },
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{ XP_AWK_VAL_INT, 0, 8 },
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{ XP_AWK_VAL_INT, 0, 9 },
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};
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xp_awk_val_t* xp_awk_makeintval (xp_awk_run_t* run, xp_long_t v)
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{
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xp_awk_val_int_t* val;
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if (v >= __awk_int[0].val &&
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v <= __awk_int[xp_countof(__awk_int)-1].val)
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{
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return (xp_awk_val_t*)&__awk_int[v-__awk_int[0].val];
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}
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if (run->icache_count > 0)
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{
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val = run->icache[--run->icache_count];
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}
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else
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{
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val = (xp_awk_val_int_t*)
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xp_malloc (xp_sizeof(xp_awk_val_int_t));
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if (val == XP_NULL) return XP_NULL;
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}
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val->type = XP_AWK_VAL_INT;
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val->ref = 0;
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val->val = v;
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/*xp_printf (XP_T("makeintval => %p\n"), val);*/
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return (xp_awk_val_t*)val;
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}
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xp_awk_val_t* xp_awk_makerealval (xp_awk_run_t* run, xp_real_t v)
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{
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xp_awk_val_real_t* val;
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if (run->rcache_count > 0)
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{
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val = run->rcache[--run->rcache_count];
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}
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else
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{
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val = (xp_awk_val_real_t*)
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xp_malloc (xp_sizeof(xp_awk_val_real_t));
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if (val == XP_NULL) return XP_NULL;
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}
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val->type = XP_AWK_VAL_REAL;
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val->ref = 0;
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val->val = v;
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/*xp_printf (XP_T("makerealval => %p\n"), val);*/
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return (xp_awk_val_t*)val;
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}
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xp_awk_val_t* xp_awk_makestrval0 (const xp_char_t* str)
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{
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return xp_awk_makestrval (str, xp_strlen(str));
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}
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xp_awk_val_t* xp_awk_makestrval (const xp_char_t* str, xp_size_t len)
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{
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xp_awk_val_str_t* val;
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val = (xp_awk_val_str_t*) xp_malloc (xp_sizeof(xp_awk_val_str_t));
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if (val == XP_NULL) return XP_NULL;
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val->type = XP_AWK_VAL_STR;
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val->ref = 0;
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val->len = len;
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val->buf = xp_strxdup (str, len);
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if (val->buf == XP_NULL)
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{
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xp_free (val);
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return XP_NULL;
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}
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/*xp_printf (XP_T("makestrval => %p\n"), val);*/
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return (xp_awk_val_t*)val;
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}
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xp_awk_val_t* xp_awk_makestrval2 (
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const xp_char_t* str1, xp_size_t len1,
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const xp_char_t* str2, xp_size_t len2)
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{
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xp_awk_val_str_t* val;
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val = (xp_awk_val_str_t*) xp_malloc (xp_sizeof(xp_awk_val_str_t));
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if (val == XP_NULL) return XP_NULL;
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val->type = XP_AWK_VAL_STR;
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val->ref = 0;
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val->len = len1 + len2;
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val->buf = xp_strxdup2 (str1, len1, str2, len2);
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if (val->buf == XP_NULL)
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{
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xp_free (val);
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return XP_NULL;
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}
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/*xp_printf (XP_T("makestrval2 => %p\n"), val);*/
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return (xp_awk_val_t*)val;
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}
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xp_awk_val_t* xp_awk_makerexval (const xp_char_t* str, xp_size_t len)
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{
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xp_awk_val_rex_t* val;
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/* TDOO: implement the regular expression value */
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val = (xp_awk_val_rex_t*) xp_malloc (xp_sizeof(xp_awk_val_rex_t));
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if (val == XP_NULL) return XP_NULL;
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val->type = XP_AWK_VAL_STR;
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val->ref = 0;
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val->len = len;
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val->buf = xp_strxdup (str, len);
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if (val->buf == XP_NULL)
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{
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xp_free (val);
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return XP_NULL;
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}
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/*xp_printf (XP_T("makerexval => %p\n"), val);*/
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return (xp_awk_val_t*)val;
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}
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static void __free_map_val (void* run, void* v)
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{
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/*
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xp_printf (XP_T("refdown in map free..."));
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xp_awk_printval (v);
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xp_printf (XP_T("\n"));
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*/
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xp_awk_refdownval (run, v);
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}
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xp_awk_val_t* xp_awk_makemapval (xp_awk_run_t* run)
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{
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xp_awk_val_map_t* val;
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val = (xp_awk_val_map_t*) xp_malloc (xp_sizeof(xp_awk_val_map_t));
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if (val == XP_NULL) return XP_NULL;
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val->type = XP_AWK_VAL_MAP;
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val->ref = 0;
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val->map = xp_awk_map_open (XP_NULL, run, 256, __free_map_val);
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if (val->map == XP_NULL)
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{
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xp_free (val);
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return XP_NULL;
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}
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return (xp_awk_val_t*)val;
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}
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xp_bool_t xp_awk_isbuiltinval (xp_awk_val_t* val)
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{
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return val == XP_NULL || val == xp_awk_val_nil ||
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(val >= (xp_awk_val_t*)&__awk_int[0] &&
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val <= (xp_awk_val_t*)&__awk_int[xp_countof(__awk_int)-1]);
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}
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void xp_awk_freeval (xp_awk_run_t* run, xp_awk_val_t* val, xp_bool_t cache)
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{
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if (xp_awk_isbuiltinval(val)) return;
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/*xp_printf (XP_T("freeing [cache=%d] ... "), cache);
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xp_awk_printval (val);
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xp_printf (XP_T("\n"));*/
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switch (val->type)
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{
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case XP_AWK_VAL_NIL:
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if (val != xp_awk_val_nil) xp_free (val);
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return;
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case XP_AWK_VAL_INT:
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if (cache == xp_true &&
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run->icache_count < xp_countof(run->icache))
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{
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run->icache[run->icache_count++] =
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(xp_awk_val_int_t*)val;
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}
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else xp_free (val);
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return;
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case XP_AWK_VAL_REAL:
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if (cache == xp_true &&
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run->rcache_count < xp_countof(run->rcache))
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{
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run->rcache[run->rcache_count++] =
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(xp_awk_val_real_t*)val;
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}
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else xp_free (val);
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return;
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case XP_AWK_VAL_STR:
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xp_free (((xp_awk_val_str_t*)val)->buf);
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xp_free (val);
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return;
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case XP_AWK_VAL_REX:
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/* TODO: implement the regular expression value properly */
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xp_free (((xp_awk_val_rex_t*)val)->buf);
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xp_free (val);
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return;
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case XP_AWK_VAL_MAP:
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xp_awk_map_close (((xp_awk_val_map_t*)val)->map);
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xp_free (val);
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return;
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}
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xp_assert (!"should never happen - invalid value type");
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}
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void xp_awk_refupval (xp_awk_val_t* val)
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{
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if (xp_awk_isbuiltinval(val)) return;
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/*
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xp_printf (XP_T("ref up "));
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xp_awk_printval (val);
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xp_printf (XP_T("\n"));
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*/
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val->ref++;
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}
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void xp_awk_refdownval (xp_awk_run_t* run, xp_awk_val_t* val)
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{
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if (xp_awk_isbuiltinval(val)) return;
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/*
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xp_printf (XP_T("%p, %p, %p\n"), xp_awk_val_nil, &__awk_nil, val);
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xp_printf (XP_T("ref down [count=>%d]\n"), (int)val->ref);
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xp_awk_printval (val);
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xp_printf (XP_T("\n"));
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*/
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xp_assert (val->ref > 0);
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val->ref--;
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if (val->ref <= 0)
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{
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/*
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xp_printf (XP_T("**FREEING ["));
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xp_awk_printval (val);
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xp_printf (XP_T("]\n"));
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*/
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xp_awk_freeval(run, val, xp_true);
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}
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}
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void xp_awk_refdownval_nofree (xp_awk_run_t* run, xp_awk_val_t* val)
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{
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if (xp_awk_isbuiltinval(val)) return;
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xp_assert (val->ref > 0);
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val->ref--;
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}
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xp_bool_t xp_awk_valtobool (xp_awk_val_t* val)
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{
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if (val == XP_NULL) return xp_false;
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switch (val->type)
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{
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case XP_AWK_VAL_NIL:
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return xp_false;
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case XP_AWK_VAL_INT:
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return ((xp_awk_val_int_t*)val)->val != 0;
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case XP_AWK_VAL_REAL:
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return ((xp_awk_val_real_t*)val)->val != 0.0;
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case XP_AWK_VAL_STR:
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return ((xp_awk_val_str_t*)val)->len > 0;
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case XP_AWK_VAL_MAP:
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return xp_false; /* TODO: is this correct? */
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}
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xp_assert (!"should never happen - invalid value type");
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return xp_false;
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}
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xp_char_t* xp_awk_valtostr (xp_awk_val_t* v, int* errnum, xp_str_t* buf)
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{
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if (v->type == XP_AWK_VAL_NIL)
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{
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if (buf == XP_NULL)
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{
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xp_char_t* tmp;
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tmp = xp_strdup (XP_T(""));
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if (tmp == XP_NULL) *errnum = XP_AWK_ENOMEM;
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return tmp;
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}
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else
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{
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xp_str_clear (buf);
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return XP_STR_BUF(buf);
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}
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}
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if (v->type == XP_AWK_VAL_INT)
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{
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xp_char_t* tmp;
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xp_long_t t;
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xp_size_t len = 0;
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t = ((xp_awk_val_int_t*)v)->val;
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if (t == 0)
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{
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/* handle zero */
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if (buf == XP_NULL)
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{
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tmp = xp_malloc (2 * xp_sizeof(xp_char_t));
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if (tmp == XP_NULL)
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{
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*errnum = XP_AWK_ENOMEM;
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return XP_NULL;
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}
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tmp[0] = XP_T('0');
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tmp[1] = XP_T('\0');
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return tmp;
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}
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else
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{
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xp_str_clear (buf);
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if (xp_str_cat (buf, XP_T("0")) == (xp_size_t)-1)
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{
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*errnum = XP_AWK_ENOMEM;
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return XP_NULL;
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}
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return XP_STR_BUF(buf);
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}
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}
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/* non-zero values */
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if (t < 0) { t = -t; len++; }
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while (t > 0) { len++; t /= 10; }
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if (buf == XP_NULL)
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{
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tmp = xp_malloc ((len + 1) * xp_sizeof(xp_char_t));
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if (tmp == XP_NULL)
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{
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*errnum = XP_AWK_ENOMEM;
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return XP_NULL;
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}
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tmp[len] = XP_T('\0');
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}
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else
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{
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xp_str_clear (buf);
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/* get the current end of the buffer */
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tmp = XP_STR_BUF(buf) + XP_STR_LEN(buf);
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/* extend the buffer */
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if (xp_str_nccat (
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buf, XP_T(' '), len) == (xp_size_t)-1)
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{
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*errnum = XP_AWK_ENOMEM;
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return XP_NULL;
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}
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}
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t = ((xp_awk_val_int_t*)v)->val;
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if (t < 0) t = -t;
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while (t > 0)
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{
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tmp[--len] = (xp_char_t)(t % 10) + XP_T('0');
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t /= 10;
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}
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if (((xp_awk_val_int_t*)v)->val < 0) tmp[--len] = XP_T('-');
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/*return (buf == XP_NULL) tmp: XP_STR_BUF(buf);*/
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return tmp;
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}
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if (v->type == XP_AWK_VAL_STR)
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{
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xp_char_t* tmp;
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if (buf == XP_NULL)
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{
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tmp = xp_strxdup (
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((xp_awk_val_str_t*)v)->buf,
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((xp_awk_val_str_t*)v)->len);
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if (tmp == XP_NULL) *errnum = XP_AWK_ENOMEM;
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}
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else
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{
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xp_str_clear (buf);
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tmp = XP_STR_BUF(buf) + XP_STR_LEN(buf);
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if (xp_str_ncat (buf,
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((xp_awk_val_str_t*)v)->buf,
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((xp_awk_val_str_t*)v)->len) == (xp_size_t)-1)
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{
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*errnum = XP_AWK_ENOMEM;
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tmp = XP_NULL;
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}
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}
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return tmp;
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}
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/* TODO: process more value types */
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xp_printf (XP_TEXT("*** ERROR: WRONG VALUE TYPE [%d] in xp_awk_valtostr v=> %p***\n"), v->type, v);
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*errnum = XP_AWK_EVALTYPE;
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return XP_NULL;
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}
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static int __print_pair (xp_awk_pair_t* pair, void* arg)
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{
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xp_printf (XP_T(" %s=>"), pair->key);
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xp_awk_printval (pair->val);
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xp_printf (XP_T(" "));
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return 0;
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}
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void xp_awk_printval (xp_awk_val_t* val)
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{
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/* TODO: better value printing...................... */
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switch (val->type)
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{
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case XP_AWK_VAL_NIL:
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xp_printf (XP_T("nil"));
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break;
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case XP_AWK_VAL_INT:
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#if defined(__LCC__)
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xp_printf (XP_T("%lld"),
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(long long)((xp_awk_val_int_t*)val)->val);
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#elif defined(__BORLANDC__) || defined(_MSC_VER)
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xp_printf (XP_T("%I64d"),
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(__int64)((xp_awk_nde_int_t*)val)->val);
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#elif defined(vax) || defined(__vax) || defined(_SCO_DS)
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xp_printf (XP_T("%ld"),
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(long)((xp_awk_val_int_t*)val)->val);
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#else
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xp_printf (XP_T("%lld"),
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(long long)((xp_awk_val_int_t*)val)->val);
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#endif
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break;
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case XP_AWK_VAL_REAL:
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xp_printf (XP_T("%Lf"),
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(long double)((xp_awk_val_real_t*)val)->val);
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break;
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case XP_AWK_VAL_STR:
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xp_printf (XP_T("%s"), ((xp_awk_val_str_t*)val)->buf);
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break;
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case XP_AWK_VAL_REX:
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xp_printf (XP_T("REX[%s]"), ((xp_awk_val_rex_t*)val)->buf);
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break;
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case XP_AWK_VAL_MAP:
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xp_printf (XP_T("MAP["));
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xp_awk_map_walk (((xp_awk_val_map_t*)val)->map, __print_pair, XP_NULL);
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xp_printf (XP_T("]"));
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break;
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default:
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xp_assert (!"should never happen - invalid value type");
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xp_printf (XP_T("**** INTERNAL ERROR - INVALID VALUE TYPE ****\n"));
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}
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}
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