hidl-gen_l.ll revision 115d428f9c38c078d679a98942c47ce4a17bd599 
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 "DeathRecipientType.h"
38#include "EnumType.h"
39#include "HandleType.h"
40#include "MemoryType.h"
41#include "Method.h"
42#include "PointerType.h"
43#include "ScalarType.h"
44#include "StringType.h"
45#include "VectorType.h"
46#include "RefType.h"
47#include "PredefinedType.h"
48
49#include "hidl-gen_y.h"
50
51#include <assert.h>
52
53using namespace android;
54using token = yy::parser::token;
55
56int check_type(yyscan_t yyscanner, struct yyguts_t *yyg);
57
58#define SCALAR_TYPE(kind)                                       \
59    do {                                                        \
60        yylval->type = new ScalarType(ScalarType::kind);        \
61        return token::TYPE;                                   \
62    } while (0)
63
64#define YY_USER_ACTION yylloc->step(); yylloc->columns(yyleng);
65
66#pragma clang diagnostic push
67#pragma clang diagnostic ignored "-Wunused-parameter"
68#pragma clang diagnostic ignored "-Wdeprecated-register"
69
70%}
71
72%option yylineno
73%option noyywrap
74%option reentrant
75%option bison-bridge
76%option bison-locations
77
78%x COMMENT_STATE
79
80%%
81
82"/*"                 { BEGIN(COMMENT_STATE); }
83<COMMENT_STATE>"*/"  { BEGIN(INITIAL); }
84<COMMENT_STATE>[\n]  { yylloc->lines(); }
85<COMMENT_STATE>.     { }
86
87"//"[^\r\n]*         { /* skip C++ style comment */ }
88
89"enum"			{ return token::ENUM; }
90"extends"		{ return token::EXTENDS; }
91"generates"		{ return token::GENERATES; }
92"import"		{ return token::IMPORT; }
93"interface"		{ return token::INTERFACE; }
94"package"		{ return token::PACKAGE; }
95"struct"		{ return token::STRUCT; }
96"typedef"		{ return token::TYPEDEF; }
97"union"			{ return token::UNION; }
98"bitfield"		{ yylval->templatedType = new BitFieldType; return token::TEMPLATED; }
99"vec"			{ yylval->templatedType = new VectorType; return token::TEMPLATED; }
100"ref"			{ yylval->templatedType = new RefType; return token::TEMPLATED; }
101"oneway"		{ return token::ONEWAY; }
102
103"bool"			{ SCALAR_TYPE(KIND_BOOL); }
104"int8_t"		{ SCALAR_TYPE(KIND_INT8); }
105"uint8_t"		{ SCALAR_TYPE(KIND_UINT8); }
106"int16_t"		{ SCALAR_TYPE(KIND_INT16); }
107"uint16_t"		{ SCALAR_TYPE(KIND_UINT16); }
108"int32_t"		{ SCALAR_TYPE(KIND_INT32); }
109"uint32_t"		{ SCALAR_TYPE(KIND_UINT32); }
110"int64_t"		{ SCALAR_TYPE(KIND_INT64); }
111"uint64_t"		{ SCALAR_TYPE(KIND_UINT64); }
112"float"			{ SCALAR_TYPE(KIND_FLOAT); }
113"double"		{ SCALAR_TYPE(KIND_DOUBLE); }
114
115"death_recipient"	{ yylval->type = new DeathRecipientType; return token::TYPE; }
116"handle"		{ yylval->type = new HandleType; return token::TYPE; }
117"memory"		{ yylval->type = new MemoryType; return token::TYPE; }
118"pointer"		{ yylval->type = new PointerType; return token::TYPE; }
119"string"		{ yylval->type = new StringType; return token::TYPE; }
120
121"MQDescriptorSync" { yylval->type = new PredefinedType("::android::hardware", "MQDescriptorSync"); return token::TYPE; }
122"MQDescriptorUnsync" { yylval->type = new PredefinedType("::android::hardware", "MQDescriptorUnsync"); return token::TYPE; }
123
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('-'); }
139"*"			{ return('*'); }
140"/"			{ return('/'); }
141"%"			{ return('%'); }
142"&"			{ return('&'); }
143"|"			{ return('|'); }
144"^"			{ return('^'); }
145"<<"			{ return(token::LSHIFT); }
146">>"			{ return(token::RSHIFT); }
147"&&"			{ return(token::LOGICAL_AND); }
148"||"			{ return(token::LOGICAL_OR);  }
149"!"			{ return('!'); }
150"~"			{ return('~'); }
151"<="			{ return(token::LEQ); }
152">="			{ return(token::GEQ); }
153"=="			{ return(token::EQUALITY); }
154"!="			{ return(token::NEQ); }
155"?"			{ return('?'); }
156"@"			{ return('@'); }
157
158{PATH}{VERSION}?"::"{PATH}      { yylval->str = strdup(yytext); return token::FQNAME; }
159{VERSION}"::"{PATH}             { yylval->str = strdup(yytext); return token::FQNAME; }
160{PATH}{VERSION}                 { yylval->str = strdup(yytext); return token::FQNAME; }
161{COMPONENT}({DOT}{COMPONENT})+  { yylval->str = strdup(yytext); return token::FQNAME; }
162{COMPONENT}                     { yylval->str = strdup(yytext); return token::IDENTIFIER; }
163
164{PATH}{VERSION}?"::"{PATH}":"{COMPONENT}      { yylval->str = strdup(yytext); return token::FQNAME; }
165{VERSION}"::"{PATH}":"{COMPONENT}             { yylval->str = strdup(yytext); return token::FQNAME; }
166{PATH}":"{COMPONENT}                          { yylval->str = strdup(yytext); return token::FQNAME; }
167
1680[xX]{H}+{IS}?		{ yylval->str = strdup(yytext); return token::INTEGER; }
1690{D}+{IS}?		{ yylval->str = strdup(yytext); return token::INTEGER; }
170{D}+{IS}?		{ yylval->str = strdup(yytext); return token::INTEGER; }
171L?\"(\\.|[^\\"])*\"	{ yylval->str = strdup(yytext); return token::STRING_LITERAL; }
172
173{D}+{E}{FS}?		{ yylval->str = strdup(yytext); return token::FLOAT; }
174{D}+\.{E}?{FS}?		{ yylval->str = strdup(yytext); return token::FLOAT; }
175{D}*\.{D}+{E}?{FS}?	{ yylval->str = strdup(yytext); return token::FLOAT; }
176
177[\n]		{ yylloc->lines(); }
178.			{ /* ignore bad characters */ }
179
180%%
181
182#pragma clang diagnostic pop
183
184status_t parseFile(AST *ast) {
185    FILE *file = fopen(ast->getFilename().c_str(), "rb");
186
187    if (file == NULL) {
188        return -errno;
189    }
190
191    yyscan_t scanner;
192    yylex_init_extra(ast, &scanner);
193    ast->setScanner(scanner);
194
195    yyset_in(file, scanner);
196    int res = yy::parser(ast).parse();
197
198    yylex_destroy(scanner);
199    ast->setScanner(NULL);
200
201    fclose(file);
202    file = NULL;
203
204    if (res != 0 || ast->syntaxErrors() != 0) {
205        return UNKNOWN_ERROR;
206    }
207
208    return OK;
209}
210