Convert to C++ Bison output

We have to step up to a GLR parser to do this without exceptions (for no
reason other than Bison happens to use exceptions for the LALR(1) template and
not for the GLR one), but this should let us smooth out integration going
forward.

Change-Id: Iff44662914b4a65dfa5612d07c3a1ede07e6e4a9
Signed-off-by: Casey Dahlin <sadmac@google.com>

tools/aidl/aidl_language.cpp

@@ -1,4 +1,5 @@
 #include "aidl_language.h"
+#include "aidl_language_y.hpp"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string>
@@ -74,7 +75,7 @@ bool ParseState::OpenFileFromDisk() {
 }
 
 int ParseState::RunParser() {
-  int ret = yyparse(this);
+  int ret = yy::parser(this).parse();
 
   free((void *)g_currentPackage);
   g_currentPackage = NULL;

tools/aidl/aidl_language_l.l

@@ -1,6 +1,6 @@
 %{
 #include "aidl_language.h"
-#include "aidl_language_y.h"
+#include "aidl_language_y.hpp"
 #include "search_path.h"
 #include <string.h>
 #include <stdlib.h>
@@ -39,6 +39,7 @@ static void do_package_statement(const char* importText);
 %option noyywrap
 %option reentrant
 %option bison-bridge
+%option bison-locations
 
 %x COPYING LONG_COMMENT
 
@@ -65,13 +66,13 @@ idvalue     (0|[1-9][0-9]*)
 <LONG_COMMENT>\**\/             { BEGIN(INITIAL); }
 
 ^{whitespace}?import{whitespace}[^ \t\r\n]+{whitespace}?;  {
-                                                SET_BUFFER(IMPORT);
-                                                return IMPORT;
+                                                SET_BUFFER(yy::parser::token::IMPORT);
+                                                return yy::parser::token::IMPORT;
                                             }
 ^{whitespace}?package{whitespace}[^ \t\r\n]+{whitespace}?;  {
                                                 do_package_statement(yytext);
-                                                SET_BUFFER(PACKAGE);
-                                                return PACKAGE;
+                                                SET_BUFFER(yy::parser::token::PACKAGE);
+                                                return yy::parser::token::PACKAGE;
                                             }
 <<EOF>>             { yyterminate(); }
 
@@ -90,25 +91,25 @@ idvalue     (0|[1-9][0-9]*)
 =               { SET_BUFFER('='); return '='; }
 
     /* keywords */
-parcelable      { SET_BUFFER(PARCELABLE); return PARCELABLE; }
-interface       { SET_BUFFER(INTERFACE); return INTERFACE; }
-in              { SET_BUFFER(IN); return IN; }
-out             { SET_BUFFER(OUT); return OUT; }
-inout           { SET_BUFFER(INOUT); return INOUT; }
-oneway          { SET_BUFFER(ONEWAY); return ONEWAY; }
+parcelable      { SET_BUFFER(yy::parser::token::PARCELABLE); return yy::parser::token::PARCELABLE; }
+interface       { SET_BUFFER(yy::parser::token::INTERFACE); return yy::parser::token::INTERFACE; }
+in              { SET_BUFFER(yy::parser::token::IN); return yy::parser::token::IN; }
+out             { SET_BUFFER(yy::parser::token::OUT); return yy::parser::token::OUT; }
+inout           { SET_BUFFER(yy::parser::token::INOUT); return yy::parser::token::INOUT; }
+oneway          { SET_BUFFER(yy::parser::token::ONEWAY); return yy::parser::token::ONEWAY; }
 
-{brackets}+     { SET_BUFFER(ARRAY); return ARRAY; }
-{idvalue}       { SET_BUFFER(IDVALUE); return IDVALUE; }
-{identifier}                                        { SET_BUFFER(IDENTIFIER); return IDENTIFIER; }
+{brackets}+     { SET_BUFFER(yy::parser::token::ARRAY); return yy::parser::token::ARRAY; }
+{idvalue}       { SET_BUFFER(yy::parser::token::IDVALUE); return yy::parser::token::IDVALUE; }
+{identifier}                                        { SET_BUFFER(yy::parser::token::IDENTIFIER); return yy::parser::token::IDENTIFIER; }
 {identifier}\<{whitespace}*{identifier}({whitespace}*,{whitespace}*{identifier})*{whitespace}*\>    {
-                                                      SET_BUFFER(GENERIC); return GENERIC; }
+                                                      SET_BUFFER(yy::parser::token::GENERIC); return yy::parser::token::GENERIC; }
 
     /* syntax error! */
 .               { printf("UNKNOWN(%s)", yytext);
                   yylval->buffer.lineno = yylineno;
-                  yylval->buffer.token = IDENTIFIER;
+                  yylval->buffer.token = yy::parser::token::IDENTIFIER;
                   yylval->buffer.data = strdup(yytext);
-                  return IDENTIFIER;
+                  return yy::parser::token::IDENTIFIER;
                 }
 
 %%

tools/aidl/aidl_language_y.y

@@ -1,26 +1,23 @@
 %{
 #include "aidl_language.h"
+#include "aidl_language_y.hpp"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-int yyerror(ParseState* ps, char* errstr)
-{
-  ps->ReportError(errstr);
-  return 1;
-}
-
-int yylex(lexer_type *, void *);
+int yylex(lexer_type *, yy::parser::location_type *l, void *);
 
 static int count_brackets(const char*);
 
-#define YYLEX_PARAM ps->Scanner()
+#define lex_scanner ps->Scanner()
 
 %}
 
 %parse-param { ParseState* ps }
+%lex-param { void *lex_scanner }
 
 %pure-parser
+%skeleton "glr.cc"
 
 %token IMPORT
 %token PACKAGE
@@ -339,3 +336,8 @@ static int count_brackets(const char* s)
     }
     return n;
 }
+
+void yy::parser::error(const yy::parser::location_type& l, const std::string& errstr)
+{
+  ps->ReportError(errstr);
+}