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#include "stdafx.h"
#include "QueryStr.h"
#include "StrUtils.h"
namespace sql {
static const Nat tagValue = 0x80000000;
static const Nat textValue = tagValue - 1;
static const Nat nameValue = textValue - 1;
static const Nat placeholderValue = nameValue - 1;
static const Nat autoIncrementValue = placeholderValue - 1;
static const Nat lastRowIdValue = autoIncrementValue - 1;
static Bool hasTag(Nat val) {
return (val & tagValue) != 0;
}
QueryStr::QueryStr(GcArray<Nat> *ops, GcArray<Str *> *text)
: opData(ops), textData(text) {}
QueryStr::Visitor::Visitor() {}
void QueryStr::Visitor::put(StrBuf *to, Str *text) {
*to << text;
}
void QueryStr::Visitor::name(StrBuf *to, Str *name) {
*to << S("\"") << name << S("\"");
}
void QueryStr::Visitor::placeholder(StrBuf *to) {
*to << S("?");
}
void QueryStr::Visitor::autoIncrement(StrBuf *to) {
*to << S("AUTOINCREMENT");
}
void QueryStr::Visitor::lastRowId(StrBuf *to) {
*to << S("LAST_INSERT_ID()");
}
void QueryStr::Visitor::type(StrBuf *to, QueryType type) {
*to << type;
}
Str *QueryStr::generate(Visitor *v) const {
StrBuf *out = new (this) StrBuf();
size_t textPos = 0;
for (size_t i = 0; i < opData->count; i++) {
if (opData->v[i] == textValue) {
v->put(out, textData->v[textPos++]);
} else if (opData->v[i] == nameValue) {
v->name(out, textData->v[textPos++]);
} else if (opData->v[i] == placeholderValue) {
v->placeholder(out);
} else if (opData->v[i] == autoIncrementValue) {
v->autoIncrement(out);
} else if (opData->v[i] == lastRowIdValue) {
v->lastRowId(out);
} else if (hasTag(opData->v[i])) {
Nat type = opData->v[i++] & ~tagValue;
v->type(out, QueryType(type, opData->v[i]));
} else {
v->type(out, QueryType(opData->v[i]));
}
}
return out->toS();
}
void QueryStr::toS(StrBuf *to) const {
*to << generate(new (this) Visitor());
}
/**
* The builder.
*/
QueryStrBuilder::QueryStrBuilder() {
currentStr = new (this) StrBuf();
ops = new (this) Array<Nat>();
strings = new (this) Array<Str *>();
}
void QueryStrBuilder::deepCopy(CloneEnv *env) {
cloned(currentStr, env);
cloned(ops, env);
cloned(strings, env);
}
void QueryStrBuilder::put(Str *str) {
*currentStr << str;
}
void QueryStrBuilder::quoted(Str *str) {
put(toSQLStrLiteral(str));
}
void QueryStrBuilder::flush() {
*strings << currentStr->toS();
*ops << textValue;
currentStr->clear();
}
void QueryStrBuilder::name(Str *str) {
flush();
*strings << str;
*ops << nameValue;
}
void QueryStrBuilder::placeholder() {
flush();
*ops << placeholderValue;
}
void QueryStrBuilder::autoIncrement() {
flush();
*ops << autoIncrementValue;
}
void QueryStrBuilder::lastRowId() {
flush();
*ops << lastRowIdValue;
}
void QueryStrBuilder::type(QueryType type) {
flush();
if (type.typeSize == 0) {
*ops << type.type;
} else {
*ops << (type.type | tagValue);
*ops << type.typeSize;
}
}
QueryStr *QueryStrBuilder::build() {
flush();
GcArray<Nat> *o = runtime::allocArray<Nat>(engine(), &natArrayType, ops->count());
for (Nat i = 0; i < ops->count(); i++)
o->v[i] = ops->at(i);
GcArray<Str *> *s = runtime::allocArray<Str *>(engine(), &pointerArrayType, strings->count());
for (Nat i = 0; i < strings->count(); i++)
s->v[i] = strings->at(i);
return new (this) QueryStr(o, s);
}
void QueryStrBuilder::clear() {
currentStr->clear();
ops->clear();
strings->clear();
}
}
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