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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* Thrift scanner.
*
* Tokenizes a thrift definition file.
*/
%{
#include <string>
#include <errno.h>
#include "main.h"
#include "globals.h"
#include "parse/t_program.h"
/**
* Must be included AFTER parse/t_program.h, but I can't remember why anymore
* because I wrote this a while ago.
*/
#include "thrifty.h"
void thrift_reserved_keyword(char* keyword) {
yyerror("Cannot use reserved language keyword: \"%s\"\n", keyword);
exit(1);
}
void integer_overflow(char* text) {
yyerror("This integer is too big: \"%s\"\n", text);
exit(1);
}
%}
/**
* Provides the yylineno global, useful for debugging output
*/
%option lex-compat
/**
* Helper definitions, comments, constants, and whatnot
*/
intconstant ([+-]?[0-9]+)
hexconstant ("0x"[0-9A-Fa-f]+)
dubconstant ([+-]?[0-9]*(\.[0-9]+)?([eE][+-]?[0-9]+)?)
identifier ([a-zA-Z_][\.a-zA-Z_0-9]*)
whitespace ([ \t\r\n]*)
sillycomm ("/*""*"*"*/")
multicomm ("/*"[^*]"/"*([^*/]|[^*]"/"|"*"[^/])*"*"*"*/")
doctext ("/**"([^*/]|[^*]"/"|"*"[^/])*"*"*"*/")
comment ("//"[^\n]*)
unixcomment ("#"[^\n]*)
symbol ([:;\,\{\}\(\)\=<>\[\]])
st_identifier ([a-zA-Z-][\.a-zA-Z_0-9-]*)
literal_begin (['\"])
%%
{whitespace} { /* do nothing */ }
{sillycomm} { /* do nothing */ }
{multicomm} { /* do nothing */ }
{comment} { /* do nothing */ }
{unixcomment} { /* do nothing */ }
{symbol} { return yytext[0]; }
"namespace" { return tok_namespace; }
"cpp_namespace" { return tok_cpp_namespace; }
"cpp_include" { return tok_cpp_include; }
"cpp_type" { return tok_cpp_type; }
"java_package" { return tok_java_package; }
"cocoa_prefix" { return tok_cocoa_prefix; }
"csharp_namespace" { return tok_csharp_namespace; }
"php_namespace" { return tok_php_namespace; }
"py_module" { return tok_py_module; }
"perl_package" { return tok_perl_package; }
"ruby_namespace" { return tok_ruby_namespace; }
"smalltalk_category" { return tok_smalltalk_category; }
"smalltalk_prefix" { return tok_smalltalk_prefix; }
"xsd_all" { return tok_xsd_all; }
"xsd_optional" { return tok_xsd_optional; }
"xsd_nillable" { return tok_xsd_nillable; }
"xsd_namespace" { return tok_xsd_namespace; }
"xsd_attrs" { return tok_xsd_attrs; }
"include" { return tok_include; }
"void" { return tok_void; }
"bool" { return tok_bool; }
"byte" { return tok_byte; }
"i16" { return tok_i16; }
"i32" { return tok_i32; }
"i64" { return tok_i64; }
"double" { return tok_double; }
"string" { return tok_string; }
"binary" { return tok_binary; }
"slist" { return tok_slist; }
"senum" { return tok_senum; }
"map" { return tok_map; }
"list" { return tok_list; }
"set" { return tok_set; }
"oneway" { return tok_oneway; }
"typedef" { return tok_typedef; }
"struct" { return tok_struct; }
"exception" { return tok_xception; }
"extends" { return tok_extends; }
"throws" { return tok_throws; }
"service" { return tok_service; }
"enum" { return tok_enum; }
"const" { return tok_const; }
"required" { return tok_required; }
"optional" { return tok_optional; }
"async" {
pwarning(0, "\"async\" is deprecated. It is called \"oneway\" now.\n");
return tok_oneway;
}
"abstract" { thrift_reserved_keyword(yytext); }
"and" { thrift_reserved_keyword(yytext); }
"args" { thrift_reserved_keyword(yytext); }
"as" { thrift_reserved_keyword(yytext); }
"assert" { thrift_reserved_keyword(yytext); }
"break" { thrift_reserved_keyword(yytext); }
"case" { thrift_reserved_keyword(yytext); }
"class" { thrift_reserved_keyword(yytext); }
"continue" { thrift_reserved_keyword(yytext); }
"declare" { thrift_reserved_keyword(yytext); }
"def" { thrift_reserved_keyword(yytext); }
"default" { thrift_reserved_keyword(yytext); }
"del" { thrift_reserved_keyword(yytext); }
"delete" { thrift_reserved_keyword(yytext); }
"do" { thrift_reserved_keyword(yytext); }
"elif" { thrift_reserved_keyword(yytext); }
"else" { thrift_reserved_keyword(yytext); }
"elseif" { thrift_reserved_keyword(yytext); }
"except" { thrift_reserved_keyword(yytext); }
"exec" { thrift_reserved_keyword(yytext); }
"false" { thrift_reserved_keyword(yytext); }
"finally" { thrift_reserved_keyword(yytext); }
"float" { thrift_reserved_keyword(yytext); }
"for" { thrift_reserved_keyword(yytext); }
"foreach" { thrift_reserved_keyword(yytext); }
"function" { thrift_reserved_keyword(yytext); }
"global" { thrift_reserved_keyword(yytext); }
"goto" { thrift_reserved_keyword(yytext); }
"if" { thrift_reserved_keyword(yytext); }
"implements" { thrift_reserved_keyword(yytext); }
"import" { thrift_reserved_keyword(yytext); }
"in" { thrift_reserved_keyword(yytext); }
"inline" { thrift_reserved_keyword(yytext); }
"instanceof" { thrift_reserved_keyword(yytext); }
"interface" { thrift_reserved_keyword(yytext); }
"is" { thrift_reserved_keyword(yytext); }
"lambda" { thrift_reserved_keyword(yytext); }
"native" { thrift_reserved_keyword(yytext); }
"new" { thrift_reserved_keyword(yytext); }
"not" { thrift_reserved_keyword(yytext); }
"or" { thrift_reserved_keyword(yytext); }
"pass" { thrift_reserved_keyword(yytext); }
"public" { thrift_reserved_keyword(yytext); }
"print" { thrift_reserved_keyword(yytext); }
"private" { thrift_reserved_keyword(yytext); }
"protected" { thrift_reserved_keyword(yytext); }
"raise" { thrift_reserved_keyword(yytext); }
"return" { thrift_reserved_keyword(yytext); }
"sizeof" { thrift_reserved_keyword(yytext); }
"static" { thrift_reserved_keyword(yytext); }
"switch" { thrift_reserved_keyword(yytext); }
"synchronized" { thrift_reserved_keyword(yytext); }
"this" { thrift_reserved_keyword(yytext); }
"throw" { thrift_reserved_keyword(yytext); }
"transient" { thrift_reserved_keyword(yytext); }
"true" { thrift_reserved_keyword(yytext); }
"try" { thrift_reserved_keyword(yytext); }
"unsigned" { thrift_reserved_keyword(yytext); }
"var" { thrift_reserved_keyword(yytext); }
"virtual" { thrift_reserved_keyword(yytext); }
"volatile" { thrift_reserved_keyword(yytext); }
"while" { thrift_reserved_keyword(yytext); }
"with" { thrift_reserved_keyword(yytext); }
"union" { thrift_reserved_keyword(yytext); }
"yield" { thrift_reserved_keyword(yytext); }
{intconstant} {
errno = 0;
yylval.iconst = strtoll(yytext, NULL, 10);
if (errno == ERANGE) {
integer_overflow(yytext);
}
return tok_int_constant;
}
{hexconstant} {
errno = 0;
yylval.iconst = strtoll(yytext+2, NULL, 16);
if (errno == ERANGE) {
integer_overflow(yytext);
}
return tok_int_constant;
}
{dubconstant} {
yylval.dconst = atof(yytext);
return tok_dub_constant;
}
{identifier} {
yylval.id = strdup(yytext);
return tok_identifier;
}
{st_identifier} {
yylval.id = strdup(yytext);
return tok_st_identifier;
}
{literal_begin} {
char mark = yytext[0];
std::string result;
for(;;)
{
int ch = yyinput();
switch (ch) {
case EOF:
yyerror("End of file while read string at %d\n", yylineno);
exit(1);
case '\n':
yyerror("End of line while read string at %d\n", yylineno - 1);
exit(1);
case '\\':
ch = yyinput();
switch (ch) {
case 'r':
result.push_back('\r');
continue;
case 'n':
result.push_back('\n');
continue;
case 't':
result.push_back('\t');
continue;
case '"':
result.push_back('"');
continue;
case '\'':
result.push_back('\'');
continue;
case '\\':
result.push_back('\\');
continue;
default:
yyerror("Bad escape character\n");
return -1;
}
break;
default:
if (ch == mark) {
yylval.id = strdup(result.c_str());
return tok_literal;
} else {
result.push_back(ch);
}
}
}
}
{doctext} {
/* This does not show up in the parse tree. */
/* Rather, the parser will grab it out of the global. */
if (g_parse_mode == PROGRAM) {
clear_doctext();
g_doctext = strdup(yytext + 3);
g_doctext[strlen(g_doctext) - 2] = '\0';
g_doctext = clean_up_doctext(g_doctext);
g_doctext_lineno = yylineno;
}
}
%%
/* vim: filetype=lex
*/
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