#include "config.h"
#include "Parser.h"
#include "lexer.h"
#include "nodes.h"
#include <wtf/HashSet.h>
#include <wtf/Vector.h>
extern int kjsyyparse();
namespace KJS {
int Parser::sid = 0;
static RefPtr<ProgramNode>* progNode;
static HashSet<Node*>* nodeCycles;
void Parser::noteNodeCycle(Node *node)
{
if (!nodeCycles)
nodeCycles = new HashSet<Node*>;
nodeCycles->add(node);
}
void Parser::removeNodeCycle(Node *node)
{
ASSERT(nodeCycles);
nodeCycles->remove(node);
}
static void clearNewNodes()
{
if (nodeCycles) {
for (HashSet<Node*>::iterator it = nodeCycles->begin(); it != nodeCycles->end(); ++it)
(*it)->breakCycle();
delete nodeCycles;
nodeCycles = 0;
}
Node::clearNewNodes();
}
PassRefPtr<ProgramNode> Parser::parse(const UString& sourceURL, int startingLineNumber,
const UChar* code, unsigned length,
int* sourceId, int* errLine, UString* errMsg)
{
if (errLine)
*errLine = -1;
if (errMsg)
*errMsg = 0;
if (!progNode)
progNode = new RefPtr<ProgramNode>;
Lexer::curr()->setCode(sourceURL, startingLineNumber, code, length);
*progNode = 0;
sid++;
if (sourceId)
*sourceId = sid;
int parseError = kjsyyparse();
bool lexError = Lexer::curr()->sawError();
Lexer::curr()->doneParsing();
PassRefPtr<ProgramNode> prog = progNode->release();
*progNode = 0;
clearNewNodes();
if (parseError || lexError) {
int eline = Lexer::curr()->lineNo();
if (errLine)
*errLine = eline;
if (errMsg)
*errMsg = "Parse error";
return 0;
}
return prog;
}
void Parser::accept(PassRefPtr<ProgramNode> prog)
{
*progNode = prog;
}
UString Parser::prettyPrint(const UString& code, int* errLine, UString* errMsg)
{
RefPtr<ProgramNode> progNode = parse(UString(), 0, code.data(), code.size(), 0, errLine, errMsg);
if (!progNode)
return 0;
return progNode->toString();
}
}