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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Guido Tack <tack@gecode.org>
5 *
6 * Copyright:
7 * Guido Tack, 2007
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34#ifndef FLATZINC_PARSER_HH
35#define FLATZINC_PARSER_HH
36
37#include <gecode/flatzinc.hh>
38
39// This is a workaround for a bug in flex that only shows up
40// with the Microsoft C++ compiler
41#if defined(_MSC_VER)
42#define YY_NO_UNISTD_H
43#ifdef __cplusplus
44extern "C" int isatty(int);
45#endif
46#endif
47
48// The Microsoft C++ compiler marks certain functions as deprecated,
49// so let's take the alternative definitions
50#if defined(_MSC_VER)
51#define strdup _strdup
52#define fileno _fileno
53#endif
54
55#include <string>
56#include <vector>
57#include <iostream>
58#include <algorithm>
59
60#include <gecode/flatzinc/option.hh>
61#include <gecode/flatzinc/varspec.hh>
62#include <gecode/flatzinc/conexpr.hh>
63#include <gecode/flatzinc/ast.hh>
64#include <gecode/flatzinc/parser.tab.hpp>
65#include <gecode/flatzinc/symboltable.hh>
66
67namespace Gecode { namespace FlatZinc {
68
69 typedef std::pair<std::string,Option<std::vector<int>* > > intvartype;
70
71 class VarSpec;
72 typedef std::pair<std::string, VarSpec*> varspec;
73
74 /// Strict weak ordering for output items
75 class OutputOrder {
76 public:
77 /// Return if \a x is less than \a y, based on first component
78 bool operator ()(const std::pair<std::string,AST::Node*>& x,
79 const std::pair<std::string,AST::Node*>& y) {
80 return x.first < y.first;
81 }
82 };
83
84 /// Types of symbols
85 enum SymbolType {
86 ST_INTVAR, //< Integer variable
87 ST_BOOLVAR, //< Boolean variable
88 ST_FLOATVAR, //< Float variable
89 ST_SETVAR, //< Set variable
90 ST_INTVARARRAY, //< Integer variable array
91 ST_BOOLVARARRAY, //< Boolean variable array
92 ST_SETVARARRAY, //< Set variable array
93 ST_FLOATVARARRAY, //< Float variable array
94 ST_INTVALARRAY, //< Integer array
95 ST_BOOLVALARRAY, //< Boolean array
96 ST_SETVALARRAY, //< Set array
97 ST_FLOATVALARRAY, //< Float array
98 ST_INT, //< Integer
99 ST_BOOL, //< Boolean
100 ST_SET, //< Set
101 ST_FLOAT //< Float
102 };
103
104 /// Entries in the symbol table
105 class SymbolEntry {
106 public:
107 SymbolType t; //< Type of entry
108 int i; //< Value of entry or array start index
109 /// Default constructor
110 SymbolEntry(void) {}
111 /// Constructor
112 SymbolEntry(SymbolType t0, int i0) : t(t0), i(i0) {}
113 };
114
115 /// Construct integer variable entry
116 forceinline SymbolEntry se_iv(int i) {
117 return SymbolEntry(ST_INTVAR, i);
118 }
119 /// Construct Boolean variable entry
120 forceinline SymbolEntry se_bv(int i) {
121 return SymbolEntry(ST_BOOLVAR, i);
122 }
123 /// Construct float variable entry
124 forceinline SymbolEntry se_fv(int i) {
125 return SymbolEntry(ST_FLOATVAR, i);
126 }
127 /// Construct set variable entry
128 forceinline SymbolEntry se_sv(int i) {
129 return SymbolEntry(ST_SETVAR, i);
130 }
131
132 /// Construct integer variable array entry
133 forceinline SymbolEntry se_iva(int i) {
134 return SymbolEntry(ST_INTVARARRAY, i);
135 }
136 /// Construct Boolean variable array entry
137 forceinline SymbolEntry se_bva(int i) {
138 return SymbolEntry(ST_BOOLVARARRAY, i);
139 }
140 /// Construct float variable array entry
141 forceinline SymbolEntry se_fva(int i) {
142 return SymbolEntry(ST_FLOATVARARRAY, i);
143 }
144 /// Construct set variable array entry
145 forceinline SymbolEntry se_sva(int i) {
146 return SymbolEntry(ST_SETVARARRAY, i);
147 }
148
149 /// Construct integer entry
150 forceinline SymbolEntry se_i(int i) {
151 return SymbolEntry(ST_INT, i);
152 }
153 /// Construct Boolean entry
154 forceinline SymbolEntry se_b(bool b) {
155 return SymbolEntry(ST_BOOL, b);
156 }
157 /// Construct set entry
158 forceinline SymbolEntry se_s(int i) {
159 return SymbolEntry(ST_SET, i);
160 }
161 /// Construct float entry
162 forceinline SymbolEntry se_f(int i) {
163 return SymbolEntry(ST_FLOAT, i);
164 }
165
166 /// Construct integer array entry
167 forceinline SymbolEntry se_ia(int i) {
168 return SymbolEntry(ST_INTVALARRAY, i);
169 }
170 /// Construct Boolean array entry
171 forceinline SymbolEntry se_ba(int i) {
172 return SymbolEntry(ST_BOOLVALARRAY, i);
173 }
174 /// Construct set array entry
175 forceinline SymbolEntry se_sa(int i) {
176 return SymbolEntry(ST_SETVALARRAY, i);
177 }
178 /// Construct float array entry
179 forceinline SymbolEntry se_fa(int i) {
180 return SymbolEntry(ST_FLOATVALARRAY, i);
181 }
182
183 /// %State of the %FlatZinc parser
184 class ParserState {
185 public:
186 ParserState(const std::string& b, std::ostream& err0,
187 Gecode::FlatZinc::FlatZincSpace* fg0)
188 : buf(b.c_str()), pos(0), length(b.size()), fg(fg0),
189 hadError(false), err(err0) {}
190
191 ParserState(char* buf0, int length0, std::ostream& err0,
192 Gecode::FlatZinc::FlatZincSpace* fg0)
193 : buf(buf0), pos(0), length(length0), fg(fg0),
194 hadError(false), err(err0) {}
195
196 void* yyscanner;
197 const char* buf;
198 unsigned int pos, length;
199 Gecode::FlatZinc::FlatZincSpace* fg;
200 std::vector<std::pair<std::string,AST::Node*> > _output;
201
202 SymbolTable<SymbolEntry> symbols;
203
204 std::vector<varspec> intvars;
205 std::vector<varspec> boolvars;
206 std::vector<varspec> setvars;
207 std::vector<varspec> floatvars;
208 std::vector<int> arrays;
209 std::vector<AST::SetLit> setvals;
210 std::vector<double> floatvals;
211 std::vector<ConExpr*> constraints;
212
213 std::vector<ConExpr*> domainConstraints;
214
215 bool hadError;
216 std::ostream& err;
217
218 int fillBuffer(char* lexBuf, unsigned int lexBufSize) {
219 if (pos >= length)
220 return 0;
221 int num = std::min(length - pos, lexBufSize);
222 memcpy(lexBuf,buf+pos,num);
223 pos += num;
224 return num;
225 }
226
227 void output(std::string x, AST::Node* n) {
228 _output.push_back(std::pair<std::string,AST::Node*>(x,n));
229 }
230
231 AST::Array* getOutput(void) {
232 OutputOrder oo;
233 std::sort(_output.begin(),_output.end(),oo);
234 AST::Array* a = new AST::Array();
235 for (unsigned int i=0; i<_output.size(); i++) {
236 a->a.push_back(new AST::String(_output[i].first+" = "));
237 if (_output[i].second->isArray()) {
238 AST::Array* oa = _output[i].second->getArray();
239 for (unsigned int j=0; j<oa->a.size(); j++) {
240 a->a.push_back(oa->a[j]);
241 oa->a[j] = nullptr;
242 }
243 delete _output[i].second;
244 } else {
245 a->a.push_back(_output[i].second);
246 }
247 a->a.push_back(new AST::String(";\n"));
248 }
249 return a;
250 }
251
252 };
253
254}}
255
256#endif
257
258// STATISTICS: flatzinc-any