blob: 007cd4ce775cdd16d3e47c95d736a36633916a61 [file] [log] [blame]
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed 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.
*/
D [0-9]
L [a-zA-Z_]
H [a-fA-F0-9]
E [Ee][+-]?{D}+
FS (f|F|l|L)
IS (u|U|l|L)*
COMPONENT {L}({L}|{D})*
DOT [.]
AT [@]
VERSION {AT}{D}+{DOT}{D}+
FQNAME ({COMPONENT}|{VERSION})(({DOT}|":"+){COMPONENT}|{VERSION})*
%{
#include "Annotation.h"
#include "AST.h"
#include "ArrayType.h"
#include "CompoundType.h"
#include "ConstantExpression.h"
#include "DeathRecipientType.h"
#include "DocComment.h"
#include "EnumType.h"
#include "HandleType.h"
#include "MemoryType.h"
#include "Method.h"
#include "PointerType.h"
#include "ScalarType.h"
#include "Scope.h"
#include "StringType.h"
#include "VectorType.h"
#include "FmqType.h"
#include "hidl-gen_y-helpers.h"
#include <assert.h>
#include <algorithm>
#include <hidl-util/StringHelper.h>
using namespace android;
using token = yy::parser::token;
#define SCALAR_TYPE(kind) \
{ \
yylval->type = new ScalarType(ScalarType::kind, *scope); \
return token::TYPE; \
}
#define YY_DECL int yylex(YYSTYPE* yylval_param, YYLTYPE* yylloc_param, \
yyscan_t yyscanner, android::AST* const ast, android::Scope** const scope)
#define YY_USER_ACTION yylloc->step(); yylloc->columns(yyleng);
%}
%option yylineno
%option noyywrap
%option nounput
%option noinput
%option reentrant
%option bison-bridge
%option bison-locations
%%
\/\*([^*]|\*+[^*\/])*\*+\/ {
std::string str(yytext);
// Add the lines to location (to keep it updated)
yylloc->lines(std::count(str.begin(), str.end(), '\n'));
str = StringHelper::LTrim(str, "/");
bool isDoc = StringHelper::StartsWith(str, "**");
str = StringHelper::LTrimAll(str, "*");
str = StringHelper::RTrim(str, "/");
str = StringHelper::RTrimAll(str, "*");
yylval->str = strdup(str.c_str());
return isDoc ? token::DOC_COMMENT : token::MULTILINE_COMMENT;
}
"//"[^\r\n]* {
ast->addUnhandledComment(
new DocComment(yytext,
convertYYLoc(*yylloc, ast),
CommentType::SINGLELINE));
}
"enum" { return token::ENUM; }
"extends" { return token::EXTENDS; }
"generates" { return token::GENERATES; }
"import" { return token::IMPORT; }
"interface" { return token::INTERFACE; }
"package" { return token::PACKAGE; }
"safe_union" { return token::SAFE_UNION; }
"struct" { return token::STRUCT; }
"typedef" { return token::TYPEDEF; }
"union" { return token::UNION; }
"bitfield" { yylval->templatedType = new BitFieldType(*scope); return token::TEMPLATED; }
"vec" { yylval->templatedType = new VectorType(*scope); return token::TEMPLATED; }
"oneway" { return token::ONEWAY; }
"bool" { SCALAR_TYPE(KIND_BOOL); }
"int8_t" { SCALAR_TYPE(KIND_INT8); }
"uint8_t" { SCALAR_TYPE(KIND_UINT8); }
"int16_t" { SCALAR_TYPE(KIND_INT16); }
"uint16_t" { SCALAR_TYPE(KIND_UINT16); }
"int32_t" { SCALAR_TYPE(KIND_INT32); }
"uint32_t" { SCALAR_TYPE(KIND_UINT32); }
"int64_t" { SCALAR_TYPE(KIND_INT64); }
"uint64_t" { SCALAR_TYPE(KIND_UINT64); }
"float" { SCALAR_TYPE(KIND_FLOAT); }
"double" { SCALAR_TYPE(KIND_DOUBLE); }
"death_recipient" { yylval->type = new DeathRecipientType(*scope); return token::TYPE; }
"handle" { yylval->type = new HandleType(*scope); return token::TYPE; }
"memory" { yylval->type = new MemoryType(*scope); return token::TYPE; }
"pointer" { yylval->type = new PointerType(*scope); return token::TYPE; }
"string" { yylval->type = new StringType(*scope); return token::TYPE; }
"fmq_sync" { yylval->type = new FmqType("::android::hardware", "MQDescriptorSync", *scope, "fmq_sync"); return token::TEMPLATED; }
"fmq_unsync" { yylval->type = new FmqType("::android::hardware", "MQDescriptorUnsync", *scope, "fmq_unsync"); return token::TEMPLATED; }
"(" { return('('); }
")" { return(')'); }
"<" { return('<'); }
">" { return('>'); }
"{" { return('{'); }
"}" { return('}'); }
"[" { return('['); }
"]" { return(']'); }
":" { return(':'); }
";" { return(';'); }
"," { return(','); }
"." { return('.'); }
"=" { return('='); }
"+" { return('+'); }
"-" { return('-'); }
"*" { return('*'); }
"/" { return('/'); }
"%" { return('%'); }
"&" { return('&'); }
"|" { return('|'); }
"^" { return('^'); }
"<<" { return(token::LSHIFT); }
">>" { return(token::RSHIFT); }
"&&" { return(token::LOGICAL_AND); }
"||" { return(token::LOGICAL_OR); }
"!" { return('!'); }
"~" { return('~'); }
"<=" { return(token::LEQ); }
">=" { return(token::GEQ); }
"==" { return(token::EQUALITY); }
"!=" { return(token::NEQ); }
"?" { return('?'); }
"@" { return('@'); }
"#" { return('#'); }
{COMPONENT} { yylval->str = strdup(yytext); return token::IDENTIFIER; }
{FQNAME} { yylval->str = strdup(yytext); return token::FQNAME; }
0[xX]{H}+{IS}? { yylval->str = strdup(yytext); return token::INTEGER; }
0{D}+{IS}? { yylval->str = strdup(yytext); return token::INTEGER; }
{D}+{IS}? { yylval->str = strdup(yytext); return token::INTEGER; }
L?\"(\\.|[^\\"])*\" { yylval->str = strdup(yytext); return token::STRING_LITERAL; }
{D}+{E}{FS}? { yylval->str = strdup(yytext); return token::FLOAT; }
{D}+\.{E}?{FS}? { yylval->str = strdup(yytext); return token::FLOAT; }
{D}*\.{D}+{E}?{FS}? { yylval->str = strdup(yytext); return token::FLOAT; }
\n|\r\n { yylloc->lines(); }
[ \t\f\v] { /* ignore all other whitespace */ }
. { yylval->str = strdup(yytext); return token::UNKNOWN; }
%%
namespace android {
status_t parseFile(AST* ast, std::unique_ptr<FILE, std::function<void(FILE *)>> file) {
yyscan_t scanner;
yylex_init(&scanner);
yyset_in(file.get(), scanner);
Scope* scopeStack = ast->getMutableRootScope();
int res = yy::parser(scanner, ast, &scopeStack).parse();
yylex_destroy(scanner);
if (res != 0 || ast->syntaxErrors() != 0) {
return UNKNOWN_ERROR;
}
return OK;
}
} // namespace android