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Code Issues 1 Releases Wiki Activity

WIP

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This commit is contained in:
bakpakin
2017-11-01 17:53:43 -04:00
parent 3efd400025
commit a2ee028bd5
30 changed files with 2929 additions and 3105 deletions
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164
core/value.c
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@@ -22,13 +22,17 @@
#include "internal.h"
/*
* Define a number of functions that can be used internally on ANY DstValue.
*/
/* Boolean truth definition */
int dst_value_truthy(DstValue v) {
return v.type != DST_NIL && !(v.type == DST_BOOLEAN && !v.data.boolean);
int dst_truthy(DstValue v) {
return v.type != DST_NIL && !(v.type == DST_BOOLEAN && !v.as.boolean);
}
/* Check if two values are equal. This is strict equality with no conversion. */
int dst_value_equals(DstValue x, DstValue y) {
int dst_equals(DstValue x, DstValue y) {
int result = 0;
if (x.type != y.type) {
result = 0;
@@ -38,17 +42,17 @@ int dst_value_equals(DstValue x, DstValue y) {
result = 1;
break;
case DST_BOOLEAN:
result = (x.data.boolean == y.data.boolean);
result = (x.as.boolean == y.as.boolean);
break;
case DST_REAL:
result = (x.data.real == y.data.real);
result = (x.as.real == y.as.real);
break;
case DST_INTEGER:
result = (x.data.integer == y.data.integer);
result = (x.as.integer == y.as.integer);
break;
default:
/* compare pointers */
result = (x.data.pointer == y.data.pointer);
result = (x.as.pointer == y.as.pointer);
break;
}
}
@@ -56,75 +60,106 @@ int dst_value_equals(DstValue x, DstValue y) {
}
/* Computes a hash value for a function */
uint32_t dst_value_hash(DstValue x) {
uint32_t dst_hash(DstValue x) {
uint32_t hash = 0;
switch (x.type) {
case DST_NIL:
hash = 0;
break;
case DST_BOOLEAN:
hash = x.data.boolean;
hash = x.as.boolean;
break;
case DST_STRING:
case DST_SYMBOL:
hash = dst_string_hash(x.data.string);
hash = dst_string_hash(x.as.string);
break;
case DST_TUPLE:
hash = dst_tuple_hash(x.data.tuple);
hash = dst_tuple_hash(x.as.tuple);
break;
case DST_STRUCT:
hash = dst_struct_hash(x.data.st);
hash = dst_struct_hash(x.as.st);
break;
default:
if (sizeof(double) == sizeof(void *)) {
/* Assuming 8 byte pointer */
hash = x.data.dwords[0] ^ x.data.dwords[1];
hash = x.as.dwords[0] ^ x.as.dwords[1];
} else {
/* Assuming 4 byte pointer (or smaller) */
hash = (uint32_t) x.data.pointer;
hash = (uint32_t) x.as.pointer;
}
break;
}
return hash;
}
/* Computes hash of an array of values */
uint32_t dst_calchash_array(const DstValue *array, uint32_t len) {
const DstValue *end = array + len;
uint32_t hash = 5381;
while (array < end)
hash = (hash << 5) + hash + dst_value_hash(*array++);
return hash;
}
/* Compare two strings */
int dst_string_compare(const uint8_t *lhs, const uint8_t *rhs) {
uint32_t xlen = dst_string_length(lhs);
uint32_t ylen = dst_string_length(rhs);
uint32_t len = xlen > ylen ? ylen : xlen;
uint32_t i;
for (i = 0; i < len; ++i) {
if (lhs[i] == rhs[i]) {
continue;
} else if (lhs[i] < rhs[i]) {
return -1; /* x is less than y */
} else {
return 1; /* y is less than x */
}
}
if (xlen == ylen) {
return 0;
} else {
return xlen < ylen ? -1 : 1;
}
}
/* Compares x to y. If they are equal retuns 0. If x is less, returns -1.
* If y is less, returns 1. All types are comparable
* and should have strict ordering. */
int dst_value_compare(DstValue x, DstValue y) {
int dst_compare(DstValue x, DstValue y) {
if (x.type == y.type) {
switch (x.type) {
case DST_NIL:
return 0;
case DST_BOOLEAN:
if (x.data.boolean == y.data.boolean) {
if (x.as.boolean == y.as.boolean) {
return 0;
} else {
return x.data.boolean ? 1 : -1;
return x.as.boolean ? 1 : -1;
}
case DST_REAL:
if (x.data.real == y.data.real) {
if (x.as.real == y.as.real) {
return 0;
} else {
return x.data.real > y.data.real ? 1 : -1;
return x.as.real > y.as.real ? 1 : -1;
}
case DST_INTEGER:
if (x.data.integer == y.data.integer) {
if (x.as.integer == y.as.integer) {
return 0;
} else {
return x.data.integer > y.data.integer ? 1 : -1;
return x.as.integer > y.as.integer ? 1 : -1;
}
case DST_STRING:
return dst_string_compare(x.data.string, y.data.string);
return dst_string_compare(x.as.string, y.as.string);
/* Lower indices are most significant */
case DST_TUPLE:
{
uint32_t i;
uint32_t xlen = dst_tuple_length(x.data.tuple);
uint32_t ylen = dst_tuple_length(y.data.tuple);
uint32_t xlen = dst_tuple_length(x.as.tuple);
uint32_t ylen = dst_tuple_length(y.as.tuple);
uint32_t count = xlen < ylen ? xlen : ylen;
for (i = 0; i < count; ++i) {
int comp = dst_value_compare(x.data.tuple[i], y.data.tuple[i]);
int comp = dst_value_compare(x.as.tuple[i], y.as.tuple[i]);
if (comp != 0) return comp;
}
if (xlen < ylen)
@@ -135,10 +170,10 @@ int dst_value_compare(DstValue x, DstValue y) {
}
break;
default:
if (x.data.string == y.data.string) {
if (x.as.string == y.as.string) {
return 0;
} else {
return x.data.string > y.data.string ? 1 : -1;
return x.as.string > y.as.string ? 1 : -1;
}
}
} else if (x.type < y.type) {
@@ -146,78 +181,3 @@ int dst_value_compare(DstValue x, DstValue y) {
}
return 1;
}
int dst_truthy(Dst *vm, uint32_t x) {
return dst_value_truthy(dst_arg(vm, x));
}
uint32_t dst_hash(Dst *vm, uint32_t x) {
return dst_value_hash(dst_arg(vm, x));
}
int dst_compare(Dst *vm, uint32_t x, uint32_t y) {
return dst_value_compare(dst_arg(vm, x), dst_arg(vm, y));
}
int dst_equals(Dst *vm, uint32_t x, uint32_t y) {
return dst_value_equals(dst_arg(vm, x), dst_arg(vm, y));
}
/* Get the length of an object. Returns errors for invalid types */
uint32_t dst_length(Dst *vm, uint32_t n) {
DstValue x = dst_arg(vm, n);
uint32_t length;
switch (x.type) {
default:
vm->ret = dst_string_cv(vm, "cannot get length");
vm->flags = 1;
return 0;
case DST_STRING:
length = dst_string_length(x.data.string);
break;
case DST_ARRAY:
length = x.data.array->count;
break;
case DST_BYTEBUFFER:
length = x.data.buffer->count;
break;
case DST_TUPLE:
length = dst_tuple_length(x.data.tuple);
break;
case DST_STRUCT:
length = dst_struct_length(x.data.st);
break;
case DST_TABLE:
length = x.data.table->count;
break;
}
return length;
}
/* Get the capacity of an object. Returns errors for invalid types */
uint32_t dst_capacity(Dst *vm, uint32_t n) {
DstValue x = dst_arg(vm, n);
uint32_t cap;
switch (x.type) {
default:
vm->ret = dst_string_cv(vm, "cannot get capacity");
vm->flags = 1;
return 0;
case DST_STRING:
cap = dst_string_length(x.data.string);
break;
case DST_ARRAY:
cap = x.data.array->capacity;
break;
case DST_BYTEBUFFER:
cap = x.data.buffer->capacity;
break;
case DST_TUPLE:
cap = dst_tuple_length(x.data.tuple);
break;
case DST_STRUCT:
cap = dst_struct_length(x.data.st);
break;
case DST_TABLE:
cap = x.data.table->capacity;
break;
}
return cap;
}