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|
%{
// **********************************************************************
//
// Copyright (c) 2003-2004 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/Ice.h>
#include <Parser.h>
#include <Grammar.h>
#ifdef _WIN32
// I get these warnings from some flex versions:
// warning C4003: not enough actual parameters for macro 'yywrap'
# pragma warning( disable : 4003 )
#endif
using namespace std;
using namespace Ice;
#define YY_INPUT(buf, result, maxSize) parser->getInput(buf, result, maxSize)
%}
WS [ \t\v\f\r]
NL [\n]
%option noyywrap
%%
"//" {
// C++-style comment
int c;
do
{
c = yyinput();
if(c == '\n')
{
parser->nextLine();
}
}
while(c != '\n' && c != EOF);
}
"/*" {
// C-style comment
while(true)
{
int c = yyinput();
if(c == '\n')
{
parser->nextLine();
}
else if(c == '*')
{
int next = yyinput();
if(next == '/')
{
break;
}
else
{
unput(next);
}
}
else if(c == EOF)
{
parser->warning("EOF in comment");
break;
}
}
}
"help" {
return TOK_HELP;
}
"quit"|"exit" {
return TOK_EXIT;
}
"add" {
return TOK_ADD_BOOK;
}
"isbn" {
return TOK_FIND_ISBN;
}
"authors" {
return TOK_FIND_AUTHORS;
}
"next" {
return TOK_NEXT_FOUND_BOOK;
}
"current" {
return TOK_PRINT_CURRENT;
}
"rent" {
return TOK_RENT_BOOK;
}
"return" {
return TOK_RETURN_BOOK;
}
"remove" {
return TOK_REMOVE_CURRENT;
}
"size" {
return TOK_SET_EVICTOR_SIZE;
}
"shutdown" {
return TOK_SHUTDOWN;
}
{WS}*(\\{WS}*{NL})? {
size_t len = strlen(yytext);
for(size_t i = 0; i < len; ++i)
{
if(yytext[i] == '\\')
{
parser->continueLine();
}
else if(yytext[i] == '\n')
{
parser->nextLine();
}
}
}
{NL}|; {
size_t len = strlen(yytext);
for(size_t i = 0; i < len; ++i)
{
if(yytext[i] == '\n')
{
parser->nextLine();
}
}
return ';';
}
\" {
// "..."-type strings
string s;
while(true)
{
char c = static_cast<char>(yyinput());
if(c == '"')
{
break;
}
else if(c == EOF)
{
parser->warning("EOF in string");
break;
}
else if(c == '\n')
{
s += c;
parser->nextLine();
}
else if(c == '\\')
{
char next = static_cast<char>(yyinput());
switch(next)
{
case '\\':
case '"':
{
s += next;
break;
}
case 'n':
{
s += '\n';
break;
}
case 'r':
{
s += '\r';
break;
}
case 't':
{
s += '\t';
break;
}
case 'v':
{
s += '\v';
break;
}
case 'f':
{
s += '\f';
break;
}
default:
{
s += c;
unput(next);
}
}
}
else
{
s += c;
}
}
yylvalp->clear();
yylvalp->push_back(s);
return TOK_STRING;
}
\' {
// '...'-type strings
string s;
while(true)
{
char c = static_cast<char>(yyinput());
if(c == '\'')
{
break;
}
else if(c == EOF)
{
parser->warning("EOF in string");
break;
}
else if(c == '\n')
{
s += c;
parser->nextLine();
}
else
{
s += c;
}
}
yylvalp->clear();
yylvalp->push_back(s);
return TOK_STRING;
}
. {
// Simple strings
string s;
s += yytext[0];
while(true)
{
char c = static_cast<char>(yyinput());
if(c == EOF)
{
break;
}
else if(isspace(c) || c == ';')
{
unput(c);
break;
}
s += c;
}
yylvalp->clear();
yylvalp->push_back(s);
return TOK_STRING;
}
%%
|
