hidl-gen_l.ll revision bd33e3854555589f312c4d6d89491e2f5cc2f782 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17D			[0-9]
18L			[a-zA-Z_]
19H			[a-fA-F0-9]
20E			[Ee][+-]?{D}+
21FS			(f|F|l|L)
22IS			(u|U|l|L)*
23
24COMPONENT               {L}({L}|{D})*
25DOT                     [.]
26PATH                    {COMPONENT}({DOT}{COMPONENT})*
27AT                      [@]
28VERSION                 {AT}{D}+{DOT}{D}+
29
30%{
31
32#include "Annotation.h"
33#include "AST.h"
34#include "ArrayType.h"
35#include "CompoundType.h"
36#include "ConstantExpression.h"
37#include "EnumType.h"
38#include "HandleType.h"
39#include "Method.h"
40#include "ScalarType.h"
41#include "StringType.h"
42#include "VectorType.h"
43#include "RefType.h"
44#include "PredefinedType.h"
45
46#include "hidl-gen_y.h"
47
48#include <assert.h>
49
50using namespace android;
51using token = yy::parser::token;
52
53int check_type(yyscan_t yyscanner, struct yyguts_t *yyg);
54
55#define SCALAR_TYPE(kind)                                       \
56    do {                                                        \
57        yylval->type = new ScalarType(ScalarType::kind);        \
58        return token::TYPE;                                   \
59    } while (0)
60
61#define YY_USER_ACTION yylloc->step(); yylloc->columns(yyleng);
62
63#pragma clang diagnostic push
64#pragma clang diagnostic ignored "-Wunused-parameter"
65#pragma clang diagnostic ignored "-Wdeprecated-register"
66
67%}
68
69%option yylineno
70%option noyywrap
71%option reentrant
72%option bison-bridge
73%option bison-locations
74
75%x COMMENT_STATE
76
77%%
78
79"/*"                 { BEGIN(COMMENT_STATE); }
80<COMMENT_STATE>"*/"  { BEGIN(INITIAL); }
81<COMMENT_STATE>[\n]  { yylloc->lines(); }
82<COMMENT_STATE>.     { }
83
84"//"[^\r\n]*         { /* skip C++ style comment */ }
85
86"enum"			{ return token::ENUM; }
87"extends"		{ return token::EXTENDS; }
88"generates"		{ return token::GENERATES; }
89"import"		{ return token::IMPORT; }
90"interface"		{ return token::INTERFACE; }
91"package"		{ return token::PACKAGE; }
92"struct"		{ return token::STRUCT; }
93"typedef"		{ return token::TYPEDEF; }
94"union"			{ return token::UNION; }
95"vec"			{ yylval->templatedType = new VectorType; return token::TEMPLATED; }
96"ref"			{ yylval->templatedType = new RefType; return token::TEMPLATED; }
97"oneway"		{ return token::ONEWAY; }
98
99"bool"			{ SCALAR_TYPE(KIND_BOOL); }
100"int8_t"		{ SCALAR_TYPE(KIND_INT8); }
101"uint8_t"		{ SCALAR_TYPE(KIND_UINT8); }
102"int16_t"		{ SCALAR_TYPE(KIND_INT16); }
103"uint16_t"		{ SCALAR_TYPE(KIND_UINT16); }
104"int32_t"		{ SCALAR_TYPE(KIND_INT32); }
105"uint32_t"		{ SCALAR_TYPE(KIND_UINT32); }
106"int64_t"		{ SCALAR_TYPE(KIND_INT64); }
107"uint64_t"		{ SCALAR_TYPE(KIND_UINT64); }
108"float"			{ SCALAR_TYPE(KIND_FLOAT); }
109"double"		{ SCALAR_TYPE(KIND_DOUBLE); }
110
111"handle"		{ yylval->type = new HandleType; return token::TYPE; }
112"string"		{ yylval->type = new StringType; return token::TYPE; }
113
114"MQDescriptorSync" { yylval->type = new PredefinedType("::android::hardware::MQDescriptorSync"); return token::TYPE; }
115"MQDescriptorUnsync" { yylval->type = new PredefinedType("::android::hardware::MQDescriptorUnsync"); return token::TYPE; }
116
117"("			{ return('('); }
118")"			{ return(')'); }
119"<"			{ return('<'); }
120">"			{ return('>'); }
121"{"			{ return('{'); }
122"}"			{ return('}'); }
123"["			{ return('['); }
124"]"			{ return(']'); }
125":"			{ return(':'); }
126";"			{ return(';'); }
127","			{ return(','); }
128"."			{ return('.'); }
129"="			{ return('='); }
130"+"			{ return('+'); }
131"-"			{ return('-'); }
132"*"			{ return('*'); }
133"/"			{ return('/'); }
134"%"			{ return('%'); }
135"&"			{ return('&'); }
136"|"			{ return('|'); }
137"^"			{ return('^'); }
138"<<"			{ return(token::LSHIFT); }
139">>"			{ return(token::RSHIFT); }
140"&&"			{ return(token::LOGICAL_AND); }
141"||"			{ return(token::LOGICAL_OR);  }
142"!"			{ return('!'); }
143"~"			{ return('~'); }
144"<="			{ return(token::LEQ); }
145">="			{ return(token::GEQ); }
146"=="			{ return(token::EQUALITY); }
147"!="			{ return(token::NEQ); }
148"?"			{ return('?'); }
149"@"			{ return('@'); }
150
151{PATH}{VERSION}?"::"{PATH}      { yylval->str = strdup(yytext); return token::FQNAME; }
152{VERSION}"::"{PATH}             { yylval->str = strdup(yytext); return token::FQNAME; }
153{PATH}{VERSION}                 { yylval->str = strdup(yytext); return token::FQNAME; }
154{COMPONENT}({DOT}{COMPONENT})+  { yylval->str = strdup(yytext); return token::FQNAME; }
155{COMPONENT}                     { yylval->str = strdup(yytext); return token::IDENTIFIER; }
156
157{PATH}{VERSION}?"::"{PATH}":"{COMPONENT}      { yylval->str = strdup(yytext); return token::FQNAME; }
158{VERSION}"::"{PATH}":"{COMPONENT}             { yylval->str = strdup(yytext); return token::FQNAME; }
159{PATH}":"{COMPONENT}                          { yylval->str = strdup(yytext); return token::FQNAME; }
160
1610[xX]{H}+{IS}?		{ yylval->str = strdup(yytext); return token::INTEGER; }
1620{D}+{IS}?		{ yylval->str = strdup(yytext); return token::INTEGER; }
163{D}+{IS}?		{ yylval->str = strdup(yytext); return token::INTEGER; }
164L?\"(\\.|[^\\"])*\"	{ yylval->str = strdup(yytext); return token::STRING_LITERAL; }
165
166{D}+{E}{FS}?		{ yylval->str = strdup(yytext); return token::FLOAT; }
167{D}+\.{E}?{FS}?		{ yylval->str = strdup(yytext); return token::FLOAT; }
168{D}*\.{D}+{E}?{FS}?	{ yylval->str = strdup(yytext); return token::FLOAT; }
169
170[\n]		{ yylloc->lines(); }
171.			{ /* ignore bad characters */ }
172
173%%
174
175#pragma clang diagnostic pop
176
177status_t parseFile(AST *ast) {
178    FILE *file = fopen(ast->getFilename().c_str(), "rb");
179
180    if (file == NULL) {
181        return -errno;
182    }
183
184    yyscan_t scanner;
185    yylex_init_extra(ast, &scanner);
186    ast->setScanner(scanner);
187
188    yyset_in(file, scanner);
189    int res = yy::parser(ast).parse();
190
191    yylex_destroy(scanner);
192    ast->setScanner(NULL);
193
194    fclose(file);
195    file = NULL;
196
197    if (res != 0) {
198        return UNKNOWN_ERROR;
199    }
200
201    return OK;
202}
203