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%{
// Copyright Eran Ifrah(c)
%}
%{
/*************** Includes and Defines *****************************/
#include <string>
#include <vector>
#include <stdio.h>
#include <map>
#include <string.h>
#define YYDEBUG_LEXER_TEXT (cl_scope_lval)
#define YYSTYPE std::string
#define YYDEBUG 0 /* get the pretty debugging code to compile*/
static std::string readInitializer(const char* delim);
static void readClassName();
static std::string className;
static std::string templateInitList;
int cl_scope_parse();
void cl_scope_error(char *string);
void syncParser();
static std::vector<std::string> gs_additionlNS;
//---------------------------------------------
// externs defined in the lexer
//---------------------------------------------
extern char *cl_scope_text;
extern int cl_scope_lex();
extern bool setLexerInput(const std::string &in, const std::map<std::string, std::string> &ignoreTokens);
extern int cl_scope_lineno;
extern std::vector<std::string> currentScope;
extern void printScopeName(); //print the current scope name
extern void increaseScope(); //increase scope with anonymouse value
extern std::string getCurrentScope();
extern void cl_scope_lex_clean();
extern void cl_scope_less(int count);
/*************** Standard ytab.c continues here *********************/
%}
/*************************************************************************/
/* This group is used by the C/C++ language parser */
%token LE_AUTO LE_DOUBLE LE_INT LE_STRUCT
%token LE_BREAK LE_ELSE LE_LONG LE_SWITCH
%token LE_CASE LE_ENUM LE_REGISTER LE_TYPEDEF
%token LE_CHAR LE_EXTERN LE_RETURN LE_UNION
%token LE_CONST LE_FLOAT LE_SHORT LE_UNSIGNED LE_BOOL
%token LE_CONTINUE LE_FOR LE_SIGNED LE_VOID
%token LE_DEFAULT LE_GOTO LE_SIZEOF LE_VOLATILE
%token LE_DO LE_IF LE_STATIC LE_WHILE
/* The following are used in C++ only. ANSI C would call these IDENTIFIERs */
%token LE_NEW LE_DELETE
%token LE_THIS
%token LE_OPERATOR
%token LE_CLASS
%token LE_PUBLIC LE_PROTECTED LE_PRIVATE
%token LE_VIRTUAL LE_FRIEND
%token LE_INLINE LE_OVERLOAD LE_OVERRIDE LE_FINAL
%token LE_TEMPLATE LE_TYPENAME
%token LE_THROW LE_CATCH
/* ANSI C Grammar suggestions */
%token LE_IDENTIFIER LE_STRINGliteral
%token LE_FLOATINGconstant LE_INTEGERconstant LE_CHARACTERconstant
%token LE_OCTALconstant LE_HEXconstant
%token LE_POUNDPOUND LE_CComment LE_CPPComment LE_NAMESPACE LE_USING
/* New Lexical element, whereas ANSI C suggested non-terminal */
%token LE_TYPEDEFname
/* Multi-Character operators */
%token LE_ARROW /* -> */
%token LE_ICR LE_DECR /* ++ -- */
%token LE_LS LE_RS /* << >> */
%token LE_LE LE_GE LE_EQ LE_NE /* <= >= == != */
%token LE_ANDAND LE_OROR /* && || */
%token LE_ELLIPSIS /* ... */
/* Following are used in C++, not ANSI C */
%token LE_CLCL /* :: */
%token LE_DOTstar LE_ARROWstar /* .* ->* */
/* modifying assignment operators */
%token LE_MULTassign LE_DIVassign LE_MODassign /* *= /= %= */
%token LE_PLUSassign LE_MINUSassign /* += -= */
%token LE_LSassign LE_RSassign /* <<= >>= */
%token LE_ANDassign LE_ERassign LE_ORassign /* &= ^= |= */
%token LE_MACRO
%token LE_DYNAMIC_CAST
%token LE_STATIC_CAST
%token LE_CONST_CAST
%token LE_REINTERPRET_CAST
%token LE_SIZE_T
%token LE_TIME_T
%token LE_DECLSPEC
%token LE_DLLIMPORT
%token LE_DLLIEXPORT
%start translation_unit
%%
/* Costants */
basic_type_name_inter: LE_INT { $$ = $1; }
| LE_CHAR { $$ = $1; }
| LE_SHORT { $$ = $1; }
| LE_LONG { $$ = $1; }
| LE_FLOAT { $$ = $1; }
| LE_DOUBLE { $$ = $1; }
| LE_SIGNED { $$ = $1; }
| LE_UNSIGNED { $$ = $1; }
| LE_VOID { $$ = $1; }
| LE_BOOL { $$ = $1; }
| LE_SIZE_T { $$ = $1; }
;
basic_type_name: LE_UNSIGNED basic_type_name_inter { $$ = $1 + " " + $2; }
| LE_SIGNED basic_type_name_inter { $$ = $1 + " " + $2; }
| LE_LONG LE_LONG { $$ = $1 + " " + $2; }
| LE_LONG LE_INT { $$ = $1 + " " + $2; }
| basic_type_name_inter { $$ = $1; }
;
/* ========================================================================*/
/* find declarations */
/* ========================================================================*/
translation_unit : /*empty*/
| translation_unit external_decl
;
external_decl : class_decl
| dummy_case
| enum_decl
| union_decl
| function_decl
| namespace_decl
| using_namespace
| scope_reducer
| scope_increaer
| question_expression
| error {
//printf("CodeLite: syntax error, unexpected token '%s' found at line %d \n", cl_scope_text, cl_scope_lineno);
//syncParser();
}
;
/*templates*/
template_arg : /* empty */ { $$ = "";}
| template_specifiter LE_IDENTIFIER {$$ = $1 + " " + $2;}
| template_specifiter LE_IDENTIFIER '=' {$$ = $1 + " " + $2 + "=" + readInitializer(",>");}
;
template_arg_list : template_arg { $$ = $1; }
| template_arg_list ',' template_arg { $$ = $1 + " " + $2 + " " + $3; }
;
template_specifiter : LE_CLASS { $$ = $1; }
| LE_TYPENAME { $$ = $1; }
;
opt_template_qualifier : /*empty*/
| LE_TEMPLATE '<' template_arg_list '>' {
$$ = $1 + $2 + $3 + $4;
}
;
///*inheritance*/
//derivation_list : /*empty*/ {$$ = "";}
// | parent_class {$$ = $1;}
// | derivation_list ',' parent_class {$$ = $1 + $2 + $3;}
// ;
//parent_class : access_specifier class_name opt_template_specifier {$$ = $1 + " " + $2 + $3;}
;
//class_name : LE_IDENTIFIER {$$ = $1;}
// | class_name LE_CLCL LE_IDENTIFIER {$$ = $1 + $2 + $3;}
;
//opt_template_specifier : /*empty*/ {$$ = "";}
// | '<' template_parameter_list '>' {$$ = $1 + $2 + $3;}
// ;
//access_specifier : /*empty*/ {$$ = "";}
// | LE_PUBLIC {$$ = $1;}
// | LE_PRIVATE {$$ = $1;}
// | LE_PROTECTED {$$ = $1;}
;
/* the following rules are for template parameters no declarations! */
template_parameter_list : /* empty */ {$$ = "";}
| template_parameter {$$ = $1;}
| template_parameter_list ',' template_parameter {$$ = $1 + $2 + $3;}
;
/*template_parameter : const_spec nested_scope_specifier LE_IDENTIFIER special_star_amp {$$ = $1 + $2 + $3 +$4;}
;*/
template_parameter : const_spec nested_scope_specifier LE_IDENTIFIER special_star_amp
{
$$ = $1 + $2 + $3 +$4;
}
| const_spec nested_scope_specifier basic_type_name special_star_amp
{
$$ = $1 + $2 + $3 +$4;
}
| const_spec nested_scope_specifier LE_IDENTIFIER '<' template_parameter_list '>' special_star_amp
{
$$ = $1 + $2 + $3 +$4 + $5 + $6 + $7 + " " ;
}
;
using_namespace: LE_USING LE_NAMESPACE nested_scope_specifier LE_IDENTIFIER ';'
{
gs_additionlNS.push_back($3+$4);
}
;
/* namespace */
namespace_decl : stmnt_starter LE_NAMESPACE LE_IDENTIFIER '{'
{
currentScope.push_back($3);
}
| stmnt_starter LE_NAMESPACE '{'
{
//anonymouse namespace
increaseScope();
}
;
/* the class rule itself */
class_decl : stmnt_starter opt_template_qualifier class_keyword
{
readClassName();
//increase the scope level
if(className.empty() == false) {
currentScope.push_back( className );
printScopeName();
}
}
;
scope_reducer : '}' {
if(currentScope.empty())
{
//fatal error!
//printf("CodeLite: fatal error - cant go beyond global scope!\n");
}
else
{
currentScope.pop_back();
printScopeName();
}
}
;
scope_increaer : '{' {
//increase random scope
increaseScope();
printScopeName();
}
question_expression : '?'
{
consumeNotIncluding(';');
}
class_keyword: LE_CLASS {$$ = $1;}
| LE_STRUCT {$$ = $1;}
;
func_name: LE_IDENTIFIER {$$ = $1;}
| LE_OPERATOR any_operator {$$ = $1 + $2;}
;
any_operator:
'+'
| '='
| '*'
| '/'
| '%'
| '^'
| '&'
| '|'
| '~'
| '!'
| '<'
| '>'
| LE_LS
| LE_RS
| LE_ANDAND
| LE_OROR
| LE_ARROW
| LE_ARROWstar
| '.'
| LE_DOTstar
| LE_ICR
| LE_DECR
| LE_LE
| LE_GE
| LE_EQ
| LE_NE
| '(' ')' {$$ = $1 + $2;}
| '[' ']' {$$ = $1 + $2;}
| LE_NEW
| LE_DELETE
| ','
| LE_MULTassign
| LE_DIVassign
| LE_MODassign
| LE_PLUSassign
| LE_MINUSassign
| LE_LSassign
| LE_RSassign
| LE_ANDassign
| LE_ERassign
| LE_ORassign
;
optional_initialization_list: '{' {$$ = '{';}/* empty */
| ':' {consumeInitializationList() /*eat everything including the open brace*/;}
;
declare_throw: /*empty*/ {$$ = "";}
| LE_THROW '(' template_parameter_list ')' {$$ = $3;}
;
dummy_case : LE_CASE LE_IDENTIFIER
{
// eat up all tokens not including the ':'
consumeNotIncluding(':');
}
;
/* functions */
function_decl : stmnt_starter opt_template_qualifier virtual_spec const_spec variable_decl nested_scope_specifier func_name '(' {consumeFuncArgList();} const_spec declare_throw '{'
{
//printf("found function %s\n", $7.c_str());
//trim down trailing '::' from scope name
if($6.find_last_not_of(":") != std::string::npos){
$6.erase($6.find_last_not_of(":")+1);
}
currentScope.push_back($6);
printScopeName();
}
| stmnt_starter opt_template_qualifier virtual_spec const_spec nested_scope_specifier func_name '(' {consumeFuncArgList();} optional_initialization_list
{
//trim down trailing '::' from scope name
if($5.find_last_not_of(":") != std::string::npos){
$5.erase($5.find_last_not_of(":")+1);
}
currentScope.push_back($5);
printScopeName();
}
| stmnt_starter opt_template_qualifier virtual_spec const_spec nested_scope_specifier '~' func_name '(' {consumeFuncArgList();} const_spec '{'
{
//trim down trailing '::' from scope name
if($5.find_last_not_of(":") != std::string::npos){
$5.erase($5.find_last_not_of(":")+1);
}
currentScope.push_back($5);
printScopeName();
}
;
/*
applicable for C++, for cases where a function is declared as
void scope::foo(){ ... }
*/
nested_scope_specifier : /*empty*/ {$$ = "";}
| nested_scope_specifier scope_specifier { $$ = $1 + $2;}
;
scope_specifier : LE_IDENTIFIER LE_CLCL {$$ = $1+ $2;}
| LE_IDENTIFIER '<' {consumeTemplateDecl();} LE_CLCL {$$ = $1 + $4;}
;
virtual_spec : /* empty */ {$$ = ""; }
| LE_VIRTUAL { $$ = $1; }
;
const_spec : /* empty */ {$$ = ""; }
| LE_CONST { $$ = $1; }
;
amp_item : /*empty*/ {$$ = ""; }
| '&' { $$ = $1; }
;
star_list : /*empty*/ {$$ = ""; }
| star_list '*' {$$ = $1 + $2;}
;
special_star_amp : star_list amp_item { $$ = $1 + $2; }
;
stmnt_starter : /*empty*/ {$$ = "";}
| ';' { $$ = ";";}
| ':' { $$ = ":";} //e.g. private: std::string m_name;
;
/** Variables **/
variable_decl : nested_scope_specifier basic_type_name special_star_amp
{$$ = $1 + $2 + $3 ;}
| nested_scope_specifier LE_IDENTIFIER special_star_amp
{$$ = $1 + $2 + $3 ;}
| nested_scope_specifier LE_IDENTIFIER '<' template_parameter_list '>' special_star_amp
{$$ = $1 + $2 + $3 + $4 + $5 + $6 ;}
;
enum_decl : stmnt_starter LE_ENUM LE_IDENTIFIER '{' {currentScope.push_back($3); printScopeName();} enum_arg_list '}'
{
currentScope.pop_back();//reduce the scope
printScopeName();
//printf("found enum: %s, args are: %s\n", $2.c_str(), $5.c_str());
}
;
enum_optional_assign : /*empty*/ {$$ = "";}
| '=' LE_HEXconstant {$$ = $1 + $2;}
| '=' LE_OCTALconstant {$$ = $1 + $2;}
| '=' LE_INTEGERconstant {$$ = $1 + $2;}
;
enum_argument : LE_IDENTIFIER enum_optional_assign {$$ = $1 + $2;}
;
enum_arg_list : /*empty*/ {$$ = "";}
| enum_argument {$$ = $1;}
| enum_arg_list ',' enum_argument {$$ = $1 + $2 + $3;}
;
union_decl : stmnt_starter LE_UNION LE_IDENTIFIER '{'
{
currentScope.push_back($3);
printScopeName();
consumeDecl();
printScopeName();
}
;
%%
void yyerror(char *s) {}
void syncParser(){
//move lexer to the next ';' line or scope opening '{'
//int ch = cl_scope_lex();
}
//swallow all tokens up to the first '{'
void consumeInitializationList(){
while( true ){
int ch = cl_scope_lex();
if(ch == 0){
break;
}
if(ch == '{'){
break;
}
}
}
void consumeFuncArgList(){
int depth = 1;
while(depth > 0){
int ch = cl_scope_lex();
if(ch == 0){
break;
}
if(ch == ')'){
depth--;
continue;
}
else if(ch == '('){
depth ++ ;
continue;
}
}
}
void readClassName()
{
#define NEXT_TOK() c = cl_scope_lex(); if(c == 0) {className.clear(); return;}
#define BREAK_IF_NOT(x) if(c != (int)x) {className.clear(); break;}
#define BREAK_IF_NOT2(x, y) if(c != (int)x && c != (int)y) break;
#define BREAK_IF(x) if(c == (int)x) break;
className.clear();
// look ahead and see if we can see another
while( true ){
int c = cl_scope_lex();
if(c == 0){ // EOF?
className.clear();
break;
}
if(c == LE_MACRO) {
continue;
} else if(c == LE_IDENTIFIER) {
className = cl_scope_text;
} else if(c == LE_DECLSPEC && className.empty()) {
// found decl sepc
// Next token is '('
NEXT_TOK();
BREAK_IF_NOT('(');
// Next token is LE_DLLIMPORT or LE_DLLEXPORT
NEXT_TOK();
BREAK_IF_NOT2(LE_DLLIEXPORT, LE_DLLIMPORT);
// Next token should be closing brace
NEXT_TOK();
BREAK_IF_NOT(')');
} else if( (c == '{') && (!className.empty()) ){
// The following is the class content
break;
} else if( c == ':' && !className.empty() ) {
// we got the class name, and we found ':'
// read all tokens up until the first open brace
while (true) {
NEXT_TOK();
if( c == (int)'{') {
return;
}
}
} else {
className.clear();
break;
}
}
}
/**
* consume all token until matching closing brace is found
*/
void consumeDecl()
{
int depth = 1;
while(depth > 0)
{
int ch = cl_scope_lex();
if(ch ==0)
{
break;
}
if(ch == '}')
{
depth--;
if(depth == 0) currentScope.pop_back();//reduce the scope
continue;
}
else if(ch == '{')
{
depth ++ ;
continue;
}
}
}
void consumeTemplateDecl()
{
templateInitList.clear();
int dep = 0;
while( true ){
int c = cl_scope_lex();
if(c == 0){ // EOF?
break;
}
if(c == '>' && dep == 0){
templateInitList += cl_scope_text;
break;
} else {
templateInitList += cl_scope_text;
templateInitList += " ";
}
switch(c) {
case (int)'<':
dep++;
break;
case (int)'>':
dep--;
break;
default:
break;
}
}
if(templateInitList.empty() == false)
templateInitList.insert(0, "<");
}
std::string readInitializer(const char* delim)
{
std::string intializer;
int dep = 0;
while( true ){
int c = cl_scope_lex();
if(c == 0){ // EOF?
break;
}
if(strchr(delim, (char)c) && dep == 0){
cl_scope_less(0);
break;
} else {
intializer += cl_scope_text;
intializer += " ";
}
switch(c) {
case (int)'<':
dep++;
break;
case (int)'>':
dep--;
break;
default:
break;
}
}
return intializer;
}
//swallow all tokens up to the first '{'
void consumeNotIncluding(int ch){
while( true ){
int c = cl_scope_lex();
if(c == 0){ // EOF?
break;
}
//keep the function signature
if(c == ch){
cl_scope_less(0);
break;
}
}
}
// return the scope name at the end of the input string
std::string get_scope_name( const std::string &in,
std::vector<std::string> &additionalNS,
const std::map<std::string, std::string> &ignoreTokens)
{
if( !setLexerInput(in, ignoreTokens) ){
return "";
}
//call tghe main parsing routine
cl_scope_parse();
std::string scope = getCurrentScope();
//do the lexer cleanup
cl_scope_lex_clean();
for(size_t i=0; i<gs_additionlNS.size(); i++){
additionalNS.push_back(gs_additionlNS.at(i));
}
gs_additionlNS.clear();
return scope;
}
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