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/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*
* Parser context for the PHP parser
*/
#ifndef PHC_PHP_CONTEXT
#define PHC_PHP_CONTEXT
#include "AST.h"
#include "lib/String.h"
#include "lib/List.h"
#include "php_parser.tab.hpp"
class PHP_context : public virtual GC_obj
{
/*
* Constructor and destructor
*/
public:
PHP_context (std::istream& input, String* filename);
virtual ~PHP_context();
std::istream& stream;
/*
* Public interface
*/
public:
// Wrap PHP_lex
bool lex ();
// Wrap PHP_parse
bool parse ();
bool dump_parse_tree ();
/*
* State used by the parser
*/
public:
AST::PHP_script* php_script;
String* current_method;
String* current_class;
String* filename;
/*
* State used by the lexical analyser
*/
// Flex internal state
public:
void* scanner;
// Interfacing with bison
public:
long source_line;
List<String*> last_comments;
AST::Commented_node* last_commented_node;
String* hash_bang;
// Processing comments, HEREDOC strings and keywords
public:
bool attach_to_previous; // Attach comment to previous token?
bool after_arrow; // was the last token we generated "->"?
bool starts_line; // does the next token start a new line?
char *heredoc_id, *heredoc_id_ptr;
long heredoc_id_len;
String* heredoc_attr; // used to set phc.unparser.heredoc_id
// Buffers
public:
string value_buffer;
string source_rep_buffer;
// Returning multiple tokens from a single production
public:
#define MAX_MT 10
long mt_type[MAX_MT];
YYSTYPE mt_lval[MAX_MT];
long mt_index;
long mt_count;
long mt_final_state;
// Schedule the return of a token of type "type", with semantic value
// "lval". If "lval" is nonnull, "length" must be the length of "lval",
// or -1 to return the entire string. lval must be zero-terminated.
void schedule_return(long type, const char* lval = 0, long length = -1);
void schedule_return(long type, string& s);
void schedule_return_string();
void schedule_return_op(const char* op, const char* attr = NULL);
// Dealing with in-string syntax
public:
void return_to_complex_syntax();
void attach_comment(String *s);
// Initialise and destroy the scanner (bodies defined in php_scanner.lex)
public:
void init_scanner(FILE* input);
void destroy_scanner();
};
#endif // PHC_PHP_CONTEXT
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