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/**
* @file
* @author 2012-2014 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include "PromelaParser.h"
#include "parser/promela.tab.hpp"
struct yy_buffer_state;
typedef yy_buffer_state *YY_BUFFER_STATE;
extern YY_BUFFER_STATE promela__scan_buffer(char *, size_t, void*);
void promela__delete_buffer(YY_BUFFER_STATE, void*);
YY_BUFFER_STATE promela__scan_string (const char * yystr , void*);
extern int promela_lex (PROMELA_STYPE* yylval_param, void* yyscanner);
int promela_lex_init (void**);
int promela_lex_destroy (void*);
void promela_error (uscxml::PromelaParser* ctx, void* yyscanner, const char* err) {
// mark as pending exception as we cannot throw from constructor and have the destructor called
uscxml::Event excEvent;
excEvent.data.compound["exception"] = uscxml::Data(err, uscxml::Data::VERBATIM);
excEvent.name = "error.execution";
excEvent.eventType = uscxml::Event::PLATFORM;
ctx->pendingException = excEvent;
}
namespace uscxml {
PromelaParser::PromelaParser(const std::string& expr) {
init(expr);
}
PromelaParser::PromelaParser(const std::string& expr, Type expectedType) {
init(expr);
if (type != expectedType) {
std::stringstream ss;
ss << "Promela syntax type mismatch: Expected " << typeToDesc(expectedType) << " but got " << typeToDesc(type);
uscxml::Event excEvent;
excEvent.data.compound["exception"] = uscxml::Data(ss.str(), uscxml::Data::VERBATIM);
excEvent.name = "error.execution";
excEvent.eventType = uscxml::Event::PLATFORM;
throw excEvent;
}
}
void PromelaParser::init(const std::string& expr) {
ast = NULL;
input_length = expr.length() + 2; // plus some zero terminators
input = (char*) calloc(1, input_length);
memcpy(input, expr.c_str(), expr.length());
promela_lex_init(&scanner);
// promela_assign_set_extra(ast, &scanner);
buffer = promela__scan_string(input, scanner);
// buffer = promela__scan_buffer(input, input_length, scanner);
promela_parse(this, scanner);
if (pendingException.name.size() > 0) {
// parsing failed in promela_error
destroy();
throw pendingException;
}
}
void PromelaParser::destroy() {
if (ast)
delete(ast);
free(input);
promela__delete_buffer((YY_BUFFER_STATE)buffer, scanner);
promela_lex_destroy(scanner);
}
PromelaParser::~PromelaParser() {
destroy();
}
std::string PromelaParser::typeToDesc(int type) {
switch (type) {
case PROMELA_EXPR:
return "expression";
case PROMELA_DECL:
return "declarations";
case PROMELA_STMNT:
return "statements";
default:
break;
}
return "";
}
PromelaParserNode::~PromelaParserNode() {
while(operands.size() > 0) {
delete operands.front();
operands.pop_front();
}
}
PromelaParserNode* PromelaParser::node(int type, int nrArgs, ...) {
PromelaParserNode* newNode = new PromelaParserNode();
newNode->type = type;
va_list ap;
va_start(ap, nrArgs);
for(int i = 1; i <= nrArgs; i++) {
newNode->operands.push_back(va_arg(ap, PromelaParserNode*));
}
return newNode;
}
PromelaParserNode* PromelaParser::value(int type, const char* value) {
PromelaParserNode* newNode = new PromelaParserNode();
newNode->value = value;
newNode->type = type;
return newNode;
}
void PromelaParser::dump() {
switch (type) {
case PROMELA_EXPR:
std::cout << "Promela Expression" << std::endl;
break;
case PROMELA_DECL:
std::cout << "Promela Declarations" << std::endl;
break;
case PROMELA_STMNT:
std::cout << "Promela Statement" << std::endl;
break;
}
ast->dump();
}
void PromelaParserNode::merge(PromelaParserNode* node) {
for (std::list<PromelaParserNode*>::iterator iter = node->operands.begin();
iter != node->operands.end(); iter++) {
operands.push_back(*iter);
}
node->operands.clear();
}
void PromelaParserNode::push(PromelaParserNode* node) {
operands.push_back(node);
}
void PromelaParserNode::dump(int indent) {
std::string padding;
for (int i = 0; i < indent; i++) {
padding += " ";
}
std::cout << padding << typeToDesc(type) << ": " << value << std::endl;
for (std::list<PromelaParserNode*>::iterator iter = operands.begin();
iter != operands.end(); iter++) {
(*iter)->dump(indent + 1);
}
}
std::string PromelaParserNode::typeToDesc(int type) {
switch(type) {
case PLUS:
return "PLUS";
case MINUS:
return "MINUS";
case TIMES:
return "TIMES";
case DIVIDE:
return "DIVIDE";
case MODULO:
return "MODULO";
case BITAND:
return "BITAND";
case BITXOR:
return "BITXOR";
case BITOR:
return "BITOR";
case GT:
return "GT";
case LT:
return "LT";
case GE:
return "GE";
case LE:
return "LE";
case EQ:
return "EQ";
case NE:
return "NE";
case AND:
return "AND";
case OR:
return "OR";
case LSHIFT:
return "LSHIFT";
case RSHIFT:
return "RSHIFT";
case NEG:
return "NEG";
case ASGN:
return "ASGN";
case INCR:
return "INCR";
case DECR:
return "DECR";
case VAR_ARRAY:
return "VAR_ARRAY";
case DECL:
return "DECL";
case STMNT:
return "STMNT";
case TYPE:
return "TYPE";
case NAME:
return "NAME";
case CONST:
return "CONST";
case PRINT:
return "PRINT";
case SHOW:
return "SHOW";
case EXPR:
return "EXPR";
case VARLIST:
return "VARLIST";
case DECLLIST:
return "DECLLIST";
case NAMELIST:
return "NAMELIST";
default:
return std::string("UNK(") + toStr(type) + ")";
}
}
}
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