1 | // |
---|
2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
---|
3 | // |
---|
4 | // The contents of this file are covered under the licence agreement in the |
---|
5 | // file "LICENCE" distributed with Cforall. |
---|
6 | // |
---|
7 | // StatementNode.cc -- |
---|
8 | // |
---|
9 | // Author : Rodolfo G. Esteves |
---|
10 | // Created On : Sat May 16 14:59:41 2015 |
---|
11 | // Last Modified By : Peter A. Buhr |
---|
12 | // Last Modified On : Sat May 16 15:10:45 2015 |
---|
13 | // Update Count : 7 |
---|
14 | // |
---|
15 | |
---|
16 | #include <list> |
---|
17 | #include <algorithm> |
---|
18 | #include <cassert> |
---|
19 | |
---|
20 | #include "ParseNode.h" |
---|
21 | #include "SynTree/Statement.h" |
---|
22 | #include "SynTree/Expression.h" |
---|
23 | #include "parseutility.h" |
---|
24 | #include "utility.h" |
---|
25 | |
---|
26 | using namespace std; |
---|
27 | |
---|
28 | const char *StatementNode::StType[] = { |
---|
29 | "Exp", "If", "Switch", "Case", "Default", "Choose", "Fallthru", |
---|
30 | "While", "Do", "For", |
---|
31 | "Goto", "Continue", "Break", "Return", "Throw", |
---|
32 | "Try", "Catch", "Finally", "Asm", |
---|
33 | "Decl" |
---|
34 | }; |
---|
35 | |
---|
36 | StatementNode::StatementNode() : ParseNode(), control( 0 ), block( 0 ), labels( 0 ), target( 0 ), decl( 0 ), isCatchRest ( false ) {} |
---|
37 | |
---|
38 | StatementNode::StatementNode( string name_) : ParseNode( name_), control( 0 ), block( 0 ), labels( 0 ), target( 0 ), decl( 0 ), isCatchRest ( false ) {} |
---|
39 | |
---|
40 | StatementNode::StatementNode( DeclarationNode *decl ) : type( Decl ), control( 0 ), block( 0 ), labels( 0 ), target( 0 ), isCatchRest ( false ) { |
---|
41 | if ( decl ) { |
---|
42 | if ( DeclarationNode *agg = decl->extractAggregate() ) { |
---|
43 | this->decl = agg; |
---|
44 | StatementNode *nextStmt = new StatementNode; |
---|
45 | nextStmt->type = Decl; |
---|
46 | nextStmt->decl = decl; |
---|
47 | next = nextStmt; |
---|
48 | if ( decl->get_link() ) { |
---|
49 | next->set_next( new StatementNode( dynamic_cast< DeclarationNode* >( decl->get_link() ) ) ); |
---|
50 | decl->set_next( 0 ); |
---|
51 | } |
---|
52 | } else { |
---|
53 | if ( decl->get_link() ) { |
---|
54 | next = new StatementNode( dynamic_cast< DeclarationNode* >( decl->get_link() ) ); |
---|
55 | decl->set_next( 0 ); |
---|
56 | } |
---|
57 | this->decl = decl; |
---|
58 | } |
---|
59 | } |
---|
60 | } |
---|
61 | |
---|
62 | StatementNode::StatementNode( Type t, ExpressionNode *ctrl_label, StatementNode *block_ ) : |
---|
63 | type( t ), control( ctrl_label ), block( block_), labels( 0 ), target( 0 ), decl( 0 ), isCatchRest ( false ) { |
---|
64 | if ( t == Default ) |
---|
65 | control = 0; |
---|
66 | } |
---|
67 | |
---|
68 | StatementNode::StatementNode( Type t, string *_target ) : |
---|
69 | type( t ), control( 0 ), block( 0 ), labels( 0 ), target(_target ), decl( 0 ), isCatchRest ( false ) {} |
---|
70 | |
---|
71 | StatementNode::~StatementNode() { |
---|
72 | delete control; |
---|
73 | delete block; |
---|
74 | delete labels; |
---|
75 | delete target; |
---|
76 | delete decl; |
---|
77 | } |
---|
78 | |
---|
79 | StatementNode * StatementNode::newCatchStmt( DeclarationNode *d, StatementNode *s, bool catchRestP ) { |
---|
80 | StatementNode *ret = new StatementNode( StatementNode::Catch, 0, s ); |
---|
81 | ret->addDeclaration( d ); |
---|
82 | ret->setCatchRest( catchRestP ); |
---|
83 | |
---|
84 | return ret; |
---|
85 | } |
---|
86 | |
---|
87 | std::string StatementNode::get_target() const{ |
---|
88 | if ( target ) |
---|
89 | return *target; |
---|
90 | |
---|
91 | return string(""); |
---|
92 | } |
---|
93 | |
---|
94 | StatementNode * StatementNode::clone() const { |
---|
95 | StatementNode *newnode = new StatementNode( type, maybeClone( control ), maybeClone( block ) ); |
---|
96 | if ( target ) { |
---|
97 | newnode->target = new string( *target ); |
---|
98 | } else { |
---|
99 | newnode->target = 0; |
---|
100 | } |
---|
101 | newnode->decl = maybeClone( decl ); |
---|
102 | return newnode; |
---|
103 | } |
---|
104 | |
---|
105 | void StatementNode::set_control( ExpressionNode *c ) { |
---|
106 | control = c; |
---|
107 | } |
---|
108 | |
---|
109 | StatementNode * StatementNode::set_block( StatementNode *b ) { |
---|
110 | block = b; |
---|
111 | |
---|
112 | return this; |
---|
113 | } |
---|
114 | |
---|
115 | ExpressionNode *StatementNode::get_control() const { |
---|
116 | return control; |
---|
117 | } |
---|
118 | |
---|
119 | StatementNode *StatementNode::get_block() const { |
---|
120 | return block; |
---|
121 | } |
---|
122 | |
---|
123 | StatementNode::Type StatementNode::get_type() const { |
---|
124 | return type; |
---|
125 | } |
---|
126 | |
---|
127 | StatementNode *StatementNode::add_label( std::string *l ) { |
---|
128 | if ( l != 0 ) { |
---|
129 | if ( labels == 0 ) |
---|
130 | labels = new std::list<std::string>(); |
---|
131 | |
---|
132 | labels->push_front(*l ); |
---|
133 | delete l; |
---|
134 | } |
---|
135 | return this; |
---|
136 | } |
---|
137 | |
---|
138 | std::list<std::string> *StatementNode::get_labels() const { return labels; } |
---|
139 | |
---|
140 | StatementNode *StatementNode::add_controlexp( ExpressionNode *e ) { |
---|
141 | if ( control && e ) |
---|
142 | control->add_to_list( e ); // xxx - check this |
---|
143 | |
---|
144 | return this; |
---|
145 | } |
---|
146 | |
---|
147 | StatementNode *StatementNode::append_block( StatementNode *stmt ) { |
---|
148 | if ( stmt != 0 ) { |
---|
149 | if ( block == 0 ) |
---|
150 | block = stmt; |
---|
151 | else |
---|
152 | block->set_link( stmt ); |
---|
153 | } |
---|
154 | return this; |
---|
155 | } |
---|
156 | |
---|
157 | StatementNode *StatementNode::append_last_case( StatementNode *stmt ) { |
---|
158 | if ( stmt != 0 ) { |
---|
159 | StatementNode *next = ( StatementNode *)get_link(); |
---|
160 | if ( next && ( next->get_type() == StatementNode::Case || next->get_type() == StatementNode::Default ) ) |
---|
161 | next->append_last_case ( stmt ); |
---|
162 | else |
---|
163 | if ( block == 0 ) |
---|
164 | block = stmt; |
---|
165 | else |
---|
166 | block->set_link( stmt ); |
---|
167 | } |
---|
168 | return this; |
---|
169 | } |
---|
170 | |
---|
171 | void StatementNode::print( std::ostream &os, int indent ) const { |
---|
172 | if ( labels != 0 ) |
---|
173 | if ( ! labels->empty()) { |
---|
174 | std::list<std::string>::const_iterator i; |
---|
175 | |
---|
176 | os << '\r' << string( indent, ' '); |
---|
177 | for ( i = labels->begin(); i != labels->end(); i++ ) |
---|
178 | os << *i << ":"; |
---|
179 | os << endl; |
---|
180 | } |
---|
181 | |
---|
182 | switch ( type ) { |
---|
183 | case Decl: |
---|
184 | decl->print( os, indent ); |
---|
185 | break; |
---|
186 | case Exp: |
---|
187 | if ( control ) { |
---|
188 | os << string( indent, ' ' ); |
---|
189 | control->print( os, indent ); |
---|
190 | os << endl; |
---|
191 | } else |
---|
192 | os << string( indent, ' ' ) << "Null Statement" << endl; |
---|
193 | break; |
---|
194 | default: |
---|
195 | os << '\r' << string( indent, ' ') << StatementNode::StType[type] << endl; |
---|
196 | if ( type == Catch ) { |
---|
197 | if ( decl ) { |
---|
198 | os << '\r' << string( indent + ParseNode::indent_by, ' ' ) << "Declaration: " << endl; |
---|
199 | decl->print( os, indent + 2*ParseNode::indent_by ); |
---|
200 | } else if ( isCatchRest ) { |
---|
201 | os << '\r' << string( indent + ParseNode::indent_by, ' ' ) << "Catches the rest " << endl; |
---|
202 | } else { |
---|
203 | ; // should never reach here |
---|
204 | } |
---|
205 | } |
---|
206 | if ( control ) { |
---|
207 | os << '\r' << string( indent + ParseNode::indent_by, ' ' ) << "Expression: " << endl; |
---|
208 | control->printList( os, indent + 2*ParseNode::indent_by ); |
---|
209 | } |
---|
210 | if ( block ) { |
---|
211 | os << '\r' << string( indent + ParseNode::indent_by, ' ' ) << "Branches of execution: " << endl; |
---|
212 | block->printList( os, indent + 2*ParseNode::indent_by ); |
---|
213 | } |
---|
214 | if ( target ) { |
---|
215 | os << '\r' << string( indent + ParseNode::indent_by, ' ' ) << "Target: " << get_target() << endl; |
---|
216 | } |
---|
217 | break; |
---|
218 | } |
---|
219 | } |
---|
220 | |
---|
221 | Statement *StatementNode::build() const { |
---|
222 | std::list<Statement *> branches; |
---|
223 | std::list<Expression *> exps; |
---|
224 | std::list<Label> labs; |
---|
225 | |
---|
226 | if ( labels != 0 ) { |
---|
227 | std::back_insert_iterator< std::list<Label> > lab_it( labs ); |
---|
228 | copy( labels->begin(), labels->end(), lab_it ); |
---|
229 | } |
---|
230 | |
---|
231 | // try { |
---|
232 | buildList<Statement, StatementNode>( get_block(), branches ); |
---|
233 | |
---|
234 | switch ( type ) { |
---|
235 | case Decl: |
---|
236 | return new DeclStmt( labs, maybeBuild< Declaration >( decl ) ); |
---|
237 | case Exp: |
---|
238 | { |
---|
239 | Expression *e = maybeBuild< Expression >( get_control() ); |
---|
240 | |
---|
241 | if ( e ) |
---|
242 | return new ExprStmt( labs, e ); |
---|
243 | else |
---|
244 | return new NullStmt( labs ); |
---|
245 | } |
---|
246 | case If: |
---|
247 | { |
---|
248 | Statement *thenb = 0, *elseb = 0; |
---|
249 | assert( branches.size() >= 1 ); |
---|
250 | |
---|
251 | thenb = branches.front(); |
---|
252 | branches.pop_front(); |
---|
253 | if ( ! branches.empty() ) { |
---|
254 | elseb = branches.front(); |
---|
255 | branches.pop_front(); |
---|
256 | } |
---|
257 | return new IfStmt( labs, notZeroExpr( get_control()->build() ), thenb, elseb ); |
---|
258 | } |
---|
259 | case While: |
---|
260 | assert( branches.size() == 1 ); |
---|
261 | return new WhileStmt( labs, notZeroExpr( get_control()->build() ), branches.front() ); |
---|
262 | case Do: |
---|
263 | assert( branches.size() == 1 ); |
---|
264 | return new WhileStmt( labs, notZeroExpr( get_control()->build() ), branches.front(), true ); |
---|
265 | case For: |
---|
266 | { |
---|
267 | assert( branches.size() == 1 ); |
---|
268 | |
---|
269 | ForCtlExprNode *ctl = dynamic_cast<ForCtlExprNode *>( get_control() ); |
---|
270 | assert( ctl != 0 ); |
---|
271 | |
---|
272 | Statement *stmt = 0; |
---|
273 | if ( ctl->get_init() != 0 ) |
---|
274 | stmt = ctl->get_init()->build(); |
---|
275 | |
---|
276 | Expression *cond = 0; |
---|
277 | if ( ctl->get_condition() != 0 ) |
---|
278 | cond = notZeroExpr( ctl->get_condition()->build() ); |
---|
279 | |
---|
280 | Expression *incr = 0; |
---|
281 | if ( ctl->get_change() != 0 ) |
---|
282 | incr = ctl->get_change()->build(); |
---|
283 | |
---|
284 | return new ForStmt( labs, stmt, cond, incr, branches.front() ); |
---|
285 | } |
---|
286 | case Switch: |
---|
287 | return new SwitchStmt( labs, get_control()->build(), branches ); |
---|
288 | case Choose: |
---|
289 | return new ChooseStmt( labs, get_control()->build(), branches ); |
---|
290 | case Fallthru: |
---|
291 | return new FallthruStmt( labs ); |
---|
292 | case Case: |
---|
293 | return new CaseStmt( labs, get_control()->build(), branches ); |
---|
294 | case Default: |
---|
295 | return new CaseStmt( labs, 0, branches, true ); |
---|
296 | case Goto: |
---|
297 | { |
---|
298 | if ( get_target() == "" ) { // computed goto |
---|
299 | assert( get_control() != 0 ); |
---|
300 | return new BranchStmt( labs, get_control()->build(), BranchStmt::Goto ); |
---|
301 | } |
---|
302 | |
---|
303 | return new BranchStmt( labs, get_target(), BranchStmt::Goto ); |
---|
304 | } |
---|
305 | case Break: |
---|
306 | return new BranchStmt( labs, get_target(), BranchStmt::Break ); |
---|
307 | case Continue: |
---|
308 | return new BranchStmt( labs, get_target(), BranchStmt::Continue ); |
---|
309 | case Return: |
---|
310 | case Throw : |
---|
311 | buildList( get_control(), exps ); |
---|
312 | if ( exps.size() ==0 ) |
---|
313 | return new ReturnStmt( labs, 0, type == Throw ); |
---|
314 | if ( exps.size() > 0 ) |
---|
315 | return new ReturnStmt( labs, exps.back(), type == Throw ); |
---|
316 | case Try: |
---|
317 | { |
---|
318 | assert( branches.size() >= 0 ); |
---|
319 | CompoundStmt *tryBlock = dynamic_cast<CompoundStmt *>( branches.front()); |
---|
320 | branches.pop_front(); |
---|
321 | FinallyStmt *finallyBlock = 0; |
---|
322 | if ( ( finallyBlock = dynamic_cast<FinallyStmt *>( branches.back())) ) { |
---|
323 | branches.pop_back(); |
---|
324 | } |
---|
325 | return new TryStmt( labs, tryBlock, branches, finallyBlock ); |
---|
326 | } |
---|
327 | case Catch: |
---|
328 | { |
---|
329 | assert( branches.size() == 1 ); |
---|
330 | |
---|
331 | return new CatchStmt( labs, maybeBuild< Declaration >( decl ), branches.front(), isCatchRest ); |
---|
332 | } |
---|
333 | case Finally: |
---|
334 | { |
---|
335 | assert( branches.size() == 1 ); |
---|
336 | CompoundStmt *block = dynamic_cast<CompoundStmt *>( branches.front() ); |
---|
337 | assert( block != 0 ); |
---|
338 | |
---|
339 | return new FinallyStmt( labs, block ); |
---|
340 | } |
---|
341 | default: |
---|
342 | // shouldn't be here |
---|
343 | return 0; |
---|
344 | } |
---|
345 | } |
---|
346 | |
---|
347 | CompoundStmtNode::CompoundStmtNode() : first( 0 ), last( 0 ) { |
---|
348 | } |
---|
349 | |
---|
350 | CompoundStmtNode::CompoundStmtNode( string *name_) : StatementNode(*name_), first( 0 ), last( 0 ) { |
---|
351 | } |
---|
352 | |
---|
353 | CompoundStmtNode::CompoundStmtNode( StatementNode *stmt ): first( stmt ) { |
---|
354 | if ( first ) { |
---|
355 | last = ( StatementNode *)( stmt->get_last()); |
---|
356 | } else { |
---|
357 | last = 0; |
---|
358 | } |
---|
359 | } |
---|
360 | |
---|
361 | CompoundStmtNode::~CompoundStmtNode() { |
---|
362 | delete first; |
---|
363 | } |
---|
364 | |
---|
365 | void CompoundStmtNode::add_statement( StatementNode *stmt ) { |
---|
366 | if ( stmt != 0 ) { |
---|
367 | last->set_link( stmt ); |
---|
368 | last = ( StatementNode *)( stmt->get_link()); |
---|
369 | } |
---|
370 | } |
---|
371 | |
---|
372 | void CompoundStmtNode::print( ostream &os, int indent ) const { |
---|
373 | if ( first ) { |
---|
374 | first->printList( os, indent+2 ); |
---|
375 | } |
---|
376 | } |
---|
377 | |
---|
378 | Statement *CompoundStmtNode::build() const { |
---|
379 | std::list<Label> labs; |
---|
380 | std::list<std::string> *labels = get_labels(); |
---|
381 | |
---|
382 | if ( labels != 0 ) { |
---|
383 | std::back_insert_iterator< std::list<Label> > lab_it( labs ); |
---|
384 | copy( labels->begin(), labels->end(), lab_it ); |
---|
385 | } |
---|
386 | |
---|
387 | CompoundStmt *cs = new CompoundStmt( labs ); |
---|
388 | buildList( first, cs->get_kids() ); |
---|
389 | return cs; |
---|
390 | } |
---|
391 | |
---|
392 | void NullStmtNode::print( ostream &os, int indent ) const { |
---|
393 | os << "\r" << string( indent, ' ') << "Null Statement:" << endl; |
---|
394 | } |
---|
395 | |
---|
396 | Statement *NullStmtNode::build() const { |
---|
397 | return new NullStmt; |
---|
398 | } |
---|
399 | |
---|
400 | // Local Variables: // |
---|
401 | // tab-width: 4 // |
---|
402 | // mode: c++ // |
---|
403 | // compile-command: "make install" // |
---|
404 | // End: // |
---|