1 /* 2 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_COMPILER_DIRECTIVESPARSER_HPP 26 #define SHARE_COMPILER_DIRECTIVESPARSER_HPP 27 28 #include "utilities/json.hpp" 29 #include "compiler/compilerDirectives.hpp" 30 31 enum FlagType { 32 boolFlag, 33 intxFlag, 34 uintxFlag, 35 doubleFlag, 36 ccstrFlag, 37 ccstrlistFlag, 38 UnknownFlagType 39 }; 40 41 static const char* flag_type_names[] = { 42 "bool", 43 "int", 44 "uint", 45 "double", 46 "string", 47 "string list", 48 "unknown" 49 }; 50 51 class DirectivesParserTest; 52 53 class DirectivesParser : public JSON { 54 friend class DirectivesParserTest; 55 public: 56 static bool has_file(); 57 static bool parse_from_flag(); 58 static bool parse_from_file(const char* filename, outputStream* st); 59 static int parse_string(const char* string, outputStream* st); 60 int install_directives(); 61 62 private: 63 DirectivesParser(const char* text, outputStream* st, bool silent); 64 ~DirectivesParser(); 65 66 bool callback(JSON_TYPE t, JSON_VAL* v, uint level); 67 static bool parse_from_file_inner(const char* filename, outputStream* st); 68 69 // types of "keys". i.e recognized <key>:<value> pairs in our JSON syntax 70 typedef enum { 71 type_c1, 72 type_c2, 73 type_enable, 74 type_preset, 75 type_match, 76 type_inline, 77 78 // After here, there is no correlation between 79 // keytype and keys array 80 //type_strategy, 81 type_flag, 82 //type_dir, 83 84 // Synthetic. 85 type_dir_array, 86 type_directives, 87 type_value_array 88 } keytype; 89 90 // name, type, dtd info and maybe a setter 91 // this is how we map key-values 92 typedef struct { 93 const char *name; 94 keytype type; 95 uint allow_array_value : 1; 96 uint allowedmask; 97 void (DirectiveSet::*set)(void* arg); 98 FlagType flag_type; 99 } key; 100 101 // Array with valid keys for the directive file 102 static const key keys[]; 103 // Marker for outermost moosewings/array 104 static const key dir_array_key; 105 // Marker for a directives set (these are "implicit" objects, as in not named) 106 static const key dir_key; 107 // Marker for a multi value 108 static const key value_array_key; 109 110 // A compiler directive shouldn't be able to use more than 5 stack slots. 111 // Example of max stack usage: 112 // depth 1: type_dir_array [ 113 // depth 2: type_directives { 114 // depth 3: type_c1 c1: { 115 // depth 4: type_inline inline: 116 // depth 5: type_value_array [ ... 117 static const uint MAX_DEPTH = 5; 118 const key* stack[MAX_DEPTH]; 119 uint depth; 120 121 bool push_key(const char* str, size_t len); 122 bool push_key(const key* k); 123 const key* current_key(); 124 const key* pop_key(); 125 static const key* lookup_key(const char* s, size_t len); 126 127 bool set_option(JSON_TYPE t, JSON_VAL* v); 128 bool set_option_flag(JSON_TYPE t, JSON_VAL* v, const key* option_key, DirectiveSet* set); 129 130 CompilerDirectives* current_directive; 131 DirectiveSet* current_directiveset; 132 133 void push_tmp(CompilerDirectives* dir); 134 void clean_tmp(); 135 CompilerDirectives* pop_tmp(); 136 CompilerDirectives* _tmp_top; // temporary storage for dirs while parsing 137 int _tmp_depth; // Number of directives that has been parsed but not installed. 138 139 static uint mask(keytype kt); 140 }; 141 142 #endif // SHARE_COMPILER_DIRECTIVESPARSER_HPP 143