parser3/src/classes/op.C - diff

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version 1.20, 2001/05/17 12:51:05	version 1.52, 2001/10/10 12:52:13
Line 2	Line 2
Parser: parser @b operators.	Parser: parser @b operators.

Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)	Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)

Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)

$Id$	$Id$
Line 23	Line 22

#define OP_CLASS_NAME "OP"	#define OP_CLASS_NAME "OP"

#define MAIN_SQL_NAME "SQL"
#define MAIN_SQL_DRIVERS_NAME "drivers"

// local variable

static Methoded *OP;

// class	// class

class MOP : public Methoded {	class MOP : public Methoded {
Line 38 public:	Line 30 public:
public: // Methoded	public: // Methoded
bool used_directly() { return true; }	bool used_directly() { return true; }
void configure_user(Request& r);	void configure_user(Request& r);

private:	private:
String main_sql_name;	String main_sql_name;
String main_sql_drivers_name;	String main_sql_drivers_name;
Line 46 private:	Line 39 private:
// methods	// methods

static void _if(Request& r, const String&, MethodParams *params) {	static void _if(Request& r, const String&, MethodParams *params) {
Value& condition_code=params->get(0);	Value& condition_code=params->as_junction(0, "condition must be expression");

bool condition=r.process(condition_code,	bool condition=r.process(condition_code,
0/no name/,	0/no name/,
false/don't intercept string/).as_bool();	false/don't intercept string/).as_bool();
if(condition)	if(condition)
r.write_pass_lang(r.process(params->get(1)));	r.write_pass_lang(r.process(params->as_junction(1, "'then' parameter must be code")));
else if(params->size()==3)	else if(params->size()>2)
r.write_pass_lang(r.process(params->get(2)));	r.write_pass_lang(r.process(params->as_junction(2, "'else' parameter must be code")));
}	}

static void _untaint(Request& r, const String& method_name, MethodParams *params) {	static void _untaint(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();

const String& lang_name=r.process(params->get(0)).as_string();	const String& lang_name=params->as_string(0, "lang must be string");
String::Untaint_lang lang=static_cast<String::Untaint_lang>(	String::Untaint_lang lang=static_cast<String::Untaint_lang>(
untaint_lang_name2enum->get_int(lang_name));	untaint_lang_name2enum->get_int(lang_name));
if(!lang)	if(!lang)
Line 69 static void _untaint(Request& r, const S	Line 62 static void _untaint(Request& r, const S
"invalid untaint language");	"invalid untaint language");

{	{
Value& vbody=params->get_junction(1, "body must be code");	Value& vbody=params->as_junction(1, "body must be code");

Temp_lang temp_lang(r, lang); // set temporarily specified ^untaint[language;	Temp_lang temp_lang(r, lang); // set temporarily specified ^untaint[language;
r.write_pass_lang(r.process(vbody)); // process marking tainted with that lang	r.write_pass_lang(r.process(vbody)); // process marking tainted with that lang
Line 83 static void _taint(Request& r, const Str	Line 76 static void _taint(Request& r, const Str
if(params->size()==1)	if(params->size()==1)
lang=String::UL_TAINTED; // mark as simply 'tainted'. useful in table:set	lang=String::UL_TAINTED; // mark as simply 'tainted'. useful in table:set
else {	else {
const String& lang_name=	const String& lang_name=params->as_string(0, "lang must be string");
r.process(params->get(0)).as_string();
lang=static_cast<String::Untaint_lang>(	lang=static_cast<String::Untaint_lang>(
untaint_lang_name2enum->get_int(lang_name));	untaint_lang_name2enum->get_int(lang_name));
if(!lang)	if(!lang)
Line 94 static void _taint(Request& r, const Str	Line 86 static void _taint(Request& r, const Str
}	}

{	{
Value& vbody=params->get_no_junction(params->size()-1, "body must not be code");	Value& vbody=params->as_no_junction(params->size()-1, "body must not be code");

String result(r.pool());	String result(r.pool());
result.append(	result.append(
Line 114 static void _process(Request& r, const S	Line 106 static void _process(Request& r, const S
origin.file, 1+origin.line,	origin.file, 1+origin.line,
method_name.cstr());	method_name.cstr());
#else	#else
strncpy(place, MAX_STRING, method_name.cstr());	strncpy(place, method_name.cstr(), MAX_STRING-1); place[MAX_STRING-1]=0;
#endif	#endif

VStateless_class& self_class=*r.self->get_class();	VStateless_class& self_class=*r.self->get_class();
Line 126 static void _process(Request& r, const S	Line 118 static void _process(Request& r, const S

// evaluate source to process	// evaluate source to process
const String& source=	const String& source=
r.process(params->get(0)).as_string();	r.process(params->as_no_junction(0, "body must be string")).as_string();

// process source code, append processed methods to 'self' class	// process source code, append processed methods to 'self' class
// maybe-define new @main	// maybe-define new @main
Line 141 static void _process(Request& r, const S	Line 133 static void _process(Request& r, const S
}	}

static void _rem(Request& r, const String&, MethodParams *params) {	static void _rem(Request& r, const String&, MethodParams *params) {
params->get_junction(0, "body must be code");	params->as_junction(0, "body must be code");
}	}

static void _while(Request& r, const String& method_name, MethodParams *params) {	static void _while(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();

Value& vcondition=params->get_junction(0, "condition must be expression");	Value& vcondition=params->as_junction(0, "condition must be expression");
Value& body=params->get_junction(1, "body must be code");	Value& body=params->as_junction(1, "body must be code");

// while...	// while...
int endless_loop_count=0;	int endless_loop_count=0;
Line 172 static void _while(Request& r, const Str	Line 164 static void _while(Request& r, const Str
}	}

static void _use(Request& r, const String& method_name, MethodParams *params) {	static void _use(Request& r, const String& method_name, MethodParams *params) {
Value& vfile=params->get_no_junction(0, "file name must not be code");	Value& vfile=params->as_no_junction(0, "file name must not be code");
r.use_file(r.absolute(vfile.as_string()));	r.use_file(vfile.as_string());
}	}

static void _for(Request& r, const String& method_name, MethodParams *params) {	static void _for(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();
const String& var_name=r.process(params->get(0)).as_string();	const String& var_name=params->as_string(0, "var name must be string");
int from=r.process(params->get(1)).as_int();	int from=params->as_int(1, "from must be int", r);
int to=r.process(params->get(2)).as_int();	int to=params->as_int(2, "to must be int", r);
Value& body_code=params->get_junction(3, "body must be code");	Value& body_code=params->as_junction(3, "body must be code");
Value *delim_code=params->size()==3+1+1?&params->get(3+1):0;	Value *delim_maybe_code=params->size()>4?&params->get(4):0;

bool need_delim=false;	bool need_delim=false;
VInt *vint=new(pool) VInt(pool, 0);	VInt *vint=new(pool) VInt(pool, 0);
Line 193 static void _for(Request& r, const Strin	Line 185 static void _for(Request& r, const Strin
&method_name,	&method_name,
"endless loop detected");	"endless loop detected");
vint->set_int(i);	vint->set_int(i);
r.root->put_element(var_name, vint);	r.self/root/->put_element(var_name, vint);

Value& processed_body=r.process(body_code);	Value& processed_body=r.process(body_code);
if(delim_code) { // delimiter set?	if(delim_maybe_code) { // delimiter set?
const String *string=processed_body.get_string();	const String *string=processed_body.get_string();
if(need_delim && string && string->size()) // need delim & iteration produced string?	if(need_delim && string && string->size()) // need delim & iteration produced string?
r.write_pass_lang(r.process(*delim_code));	r.write_pass_lang(r.process(*delim_maybe_code));
need_delim=true;	need_delim=true;
}	}
r.write_pass_lang(processed_body);	r.write_pass_lang(processed_body);
Line 207 static void _for(Request& r, const Strin	Line 199 static void _for(Request& r, const Strin
}	}

static void _eval(Request& r, const String& method_name, MethodParams *params) {	static void _eval(Request& r, const String& method_name, MethodParams *params) {
Value& expr=params->get_junction(0, "need expression");	Value& expr=params->as_junction(0, "need expression");
// evaluate expresion	// evaluate expresion
Value *result=r.process(expr,	Value *result=r.process(expr,
0/no name YET/,	0/no name YET/,
true/don't intercept string/).as_expr_result();	true/don't intercept string/).as_expr_result();
if(params->size()==2) {	if(params->size()>1) {
Value& fmt=params->get_no_junction(1, "fmt must not be code");	Value& fmt=params->as_no_junction(1, "fmt must not be code");

Pool& pool=r.pool();	Pool& pool=r.pool();
String& string=*new(pool) String(pool);	String& string=*new(pool) String(pool);
Line 224 static void _eval(Request& r, const Stri	Line 216 static void _eval(Request& r, const Stri
r.write_no_lang(*result);	r.write_no_lang(*result);
}	}

	static void _error(Request& r, const String& method_name, MethodParams *params) {
typedef double (*math_one_double_op_func_ptr)(double);
static double round(double op) { return floor(op+0.5); }
static double sign(double op) { return op > 0 ? 1 : ( op < 0 ? -1 : 0 ); }

static void double_one_op(Request& r,
const String& method_name, MethodParams *params,
math_one_double_op_func_ptr func) {
Pool& pool=r.pool();	Pool& pool=r.pool();
Value& param=params->get_junction(0, "parameter must be expression");

Value& result=new(pool) VDouble(pool, (func)(r.process(param).as_double()));
result.set_name(method_name);
r.write_no_lang(result);
}

static void _round(Request& r, const String& method_name, MethodParams *params) {
double_one_op(r, method_name, params, &round);
}

static void _floor(Request& r, const String& method_name, MethodParams *params) {
double_one_op(r, method_name, params, &floor);
}

static void _ceiling(Request& r, const String& method_name, MethodParams *params) {	const String& serror=params->as_string(0, "message must be string");
double_one_op(r, method_name, params, &ceil);	PTHROW(0, 0,
	&method_name,
	"%s", serror.cstr());
}	}

static void _abs(Request& r, const String& method_name, MethodParams *params) {
double_one_op(r, method_name, params, &fabs);
}

static void _sign(Request& r, const String& method_name, MethodParams *params) {
double_one_op(r, method_name, params, &sign);
}

static void _connect(Request& r, const String&, MethodParams *params) {	static void _connect(Request& r, const String& method_name, MethodParams *params) {
Pool& pool=r.pool();	Pool& pool=r.pool();

Value& url=params->get_no_junction(0, "url must not be code");	Value& url=params->as_no_junction(0, "url must not be code");
Value& body_code=params->get_junction(1, "body must be code");	Value& body_code=params->as_junction(1, "body must be code");

Table *protocol2driver_and_client=	Table *protocol2driver_and_client=
static_cast<Table *>(r.classes_conf.get(OP->name()));	static_cast<Table *>(r.classes_conf.get(r.OP.name()));

// connect	// connect
SQL_Connection& connection=SQL_driver_manager->get_connection(	SQL_Connection& connection=SQL_driver_manager->get_connection(
url.as_string(), protocol2driver_and_client);	url.as_string(), method_name, protocol2driver_and_client);

Exception rethrow_me;	Exception rethrow_me;
// remember/set current connection	// remember/set current connection
Line 299 static void _connect(Request& r, const S	Line 265 static void _connect(Request& r, const S
PEND_CATCH	PEND_CATCH

// close connection [cache it]	// close connection [cache it]
connection.close(pool);	connection.close();
// recall current connection from remembered	// recall current connection from remembered
r.connection=saved_connection;	r.connection=saved_connection;

Line 309 static void _connect(Request& r, const S	Line 275 static void _connect(Request& r, const S
rethrow_me.comment());	rethrow_me.comment());
}	}

	#ifndef DOXYGEN
	struct Switch_data {
	Value *searching;
	Value *found;
	Value *_default;
	};
	#endif
	static void _switch(Request& r, const String&, MethodParams *params) {
	void backup=r.classes_conf.get(switch_data_name);
	Switch_data data={&r.process(params->get(0))};
	r.classes_conf.put(*switch_data_name, &data);

	r.process(params->as_junction(1, "switch cases must be code")); // and ignore result

	r.classes_conf.put(*switch_data_name, backup);

	if(Value *code=data.found ? data.found : data._default)
	r.write_pass_lang(r.process(*code));
	}

	static void _case(Request& r, const String& method_name, MethodParams *params) {
	Pool& pool=r.pool();

	Switch_data data=static_cast<Switch_data >(r.classes_conf.get(*switch_data_name));
	if(!data)
	PTHROW(0, 0,
	&method_name,
	"without switch");

	int count=params->size();
	Value *code=&params->as_junction(--count, "case result must be code");
	for(int i=0; i<count; i++) {
	Value& value=r.process(params->get(i));

	if(value.as_string() == *case_default_value) {
	data->_default=code;
	break;
	}

	bool matches;
	if(data->searching->is_string())
	matches=data->searching->as_string() == value.as_string();
	else
	matches=data->searching->as_double() == value.as_double();

	if(matches) {
	data->found=code;
	break;
	}
	}
	}

// constructor	// constructor

MOP::MOP(Pool& apool) : Methoded(apool),	MOP::MOP(Pool& apool) : Methoded(apool),
Line 331 MOP::MOP(Pool& apool) : Methoded(apool),	Line 349 MOP::MOP(Pool& apool) : Methoded(apool),
add_native_method("process", Method::CT_ANY, _process, 1, 1);	add_native_method("process", Method::CT_ANY, _process, 1, 1);

// ^rem{code}	// ^rem{code}
add_native_method("rem", Method::CT_ANY, _rem, 1, 1);	add_native_method("rem", Method::CT_ANY, _rem, 1, 10000);

// ^while(condition){code}	// ^while(condition){code}
add_native_method("while", Method::CT_ANY, _while, 2, 2);	add_native_method("while", Method::CT_ANY, _while, 2, 2);
Line 346 MOP::MOP(Pool& apool) : Methoded(apool),	Line 364 MOP::MOP(Pool& apool) : Methoded(apool),
// ^eval(expr)[format]	// ^eval(expr)[format]
add_native_method("eval", Method::CT_ANY, _eval, 1, 2);	add_native_method("eval", Method::CT_ANY, _eval, 1, 2);

	// ^error[msg]
	add_native_method("error", Method::CT_ANY, _error, 1, 1);

// math functions

// ^round(expr)
add_native_method("round", Method::CT_ANY, _round, 1, 1);

// ^floor(expr)
add_native_method("floor", Method::CT_ANY, _floor, 1, 1);

// ^ceiling(expr)
add_native_method("ceiling", Method::CT_ANY, _ceiling, 1, 1);

// ^abs(expr)
add_native_method("abs", Method::CT_ANY, _abs, 1, 1);

// ^sign(expr)
add_native_method("sign", Method::CT_ANY, _sign, 1, 1);


// connect

// ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s}	// ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s}
add_native_method("connect", Method::CT_ANY, _connect, 2, 2);	add_native_method("connect", Method::CT_ANY, _connect, 2, 2);

	// switch

	// ^switch[value]{cases}
	add_native_method("switch", Method::CT_ANY, _switch, 2, 2);

	// ^case[value]{code}
	add_native_method("case", Method::CT_ANY, _case, 2, 10000);
}	}

// constructor & configurator	// constructor & configurator

Methoded *MOP_create(Pool& pool) {	Methoded *MOP_create(Pool& pool) {
return OP=new(pool) MOP(pool);	return new(pool) MOP(pool);
}	}


void MOP::configure_user(Request& r) {	void MOP::configure_user(Request& r) {
Pool& pool=r.pool();	Pool& pool=r.pool();

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Removed from v.1.20
changed lines
	Added in v.1.52