source: src/Parser/StatementNode.cc@ 51b986f

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay gc_noraii jacob/cs343-translation jenkins-sandbox memory new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new string with_gc
Last change on this file since 51b986f was 1db21619, checked in by Peter A. Buhr <pabuhr@…>, 10 years ago

add CFA flag, remove -p from cc1, typedef on functions become function declarations, move isInline/isNoreturn to Declaration, cleaned up label code
  • Property mode set to 100644
File size: 10.2 KB
Line 
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 : Thu Jul 16 16:20:24 2015
13// Update Count : 30
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
26using namespace std;
27
28const 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
36StatementNode::StatementNode() : ParseNode(), control( 0 ), block( 0 ), labels( 0 ), target( 0 ), decl( 0 ), isCatchRest ( false ) {}
37
38StatementNode::StatementNode( const string *name_ ) : ParseNode( name_ ), control( 0 ), block( 0 ), labels( 0 ), target( 0 ), decl( 0 ), isCatchRest ( false ) {}
39
40StatementNode::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 } // if
52 } else {
53 if ( decl->get_link() ) {
54 next = new StatementNode( dynamic_cast< DeclarationNode* >( decl->get_link() ) );
55 decl->set_next( 0 );
56 } // if
57 this->decl = decl;
58 } // if
59 } // if
60}
61
62StatementNode::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
68StatementNode::StatementNode( Type t, string *_target ) :
69 type( t ), control( 0 ), block( 0 ), labels( 0 ), target(_target ), decl( 0 ), isCatchRest ( false ) {}
70
71StatementNode::~StatementNode() {
72 delete control;
73 delete block;
74 delete target;
75 delete decl;
76}
77
78StatementNode * StatementNode::newCatchStmt( DeclarationNode *d, StatementNode *s, bool catchRestP ) {
79 StatementNode *ret = new StatementNode( StatementNode::Catch, 0, s );
80 ret->addDeclaration( d );
81 ret->setCatchRest( catchRestP );
82
83 return ret;
84}
85
86std::string StatementNode::get_target() const{
87 if ( target )
88 return *target;
89
90 return string("");
91}
92
93StatementNode * StatementNode::clone() const {
94 StatementNode *newnode = new StatementNode( type, maybeClone( control ), maybeClone( block ) );
95 if ( target ) {
96 newnode->target = new string( *target );
97 } else {
98 newnode->target = 0;
99 } // if
100 newnode->decl = maybeClone( decl );
101 return newnode;
102}
103
104StatementNode *StatementNode::add_label( const std::string *l ) {
105 if ( l != 0 ) {
106 labels.push_front( *l );
107 delete l;
108 } // if
109 return this;
110}
111
112StatementNode *StatementNode::add_controlexp( ExpressionNode *e ) {
113 if ( control && e )
114 control->add_to_list( e ); // xxx - check this
115
116 return this;
117}
118
119StatementNode *StatementNode::append_block( StatementNode *stmt ) {
120 if ( stmt != 0 ) {
121 if ( block == 0 )
122 block = stmt;
123 else
124 block->set_link( stmt );
125 } // if
126 return this;
127}
128
129StatementNode *StatementNode::append_last_case( StatementNode *stmt ) {
130 if ( stmt != 0 ) {
131 StatementNode *next = ( StatementNode *)get_link();
132 if ( next && ( next->get_type() == StatementNode::Case || next->get_type() == StatementNode::Default ) )
133 next->append_last_case ( stmt );
134 else
135 if ( block == 0 )
136 block = stmt;
137 else
138 block->set_link( stmt );
139 } // if
140 return this;
141}
142
143void StatementNode::print( std::ostream &os, int indent ) const {
144 if ( ! labels.empty()) {
145 std::list<std::string>::const_iterator i;
146
147 os << string( indent, ' ' );
148 for ( i = labels.begin(); i != labels.end(); i++ )
149 os << *i << ":";
150 os << endl;
151 } // if
152
153 switch ( type ) {
154 case Decl:
155 decl->print( os, indent );
156 break;
157 case Exp:
158 if ( control ) {
159 os << string( indent, ' ' );
160 control->print( os, indent );
161 os << endl;
162 } else
163 os << string( indent, ' ' ) << "Null Statement" << endl;
164 break;
165 default:
166 os << string( indent, ' ' ) << StatementNode::StType[type] << endl;
167 if ( type == Catch ) {
168 if ( decl ) {
169 os << string( indent + ParseNode::indent_by, ' ' ) << "Declaration: " << endl;
170 decl->print( os, indent + 2*ParseNode::indent_by );
171 } else if ( isCatchRest ) {
172 os << string( indent + ParseNode::indent_by, ' ' ) << "Catches the rest " << endl;
173 } else {
174 ; // should never reach here
175 } // if
176 } // if
177 if ( control ) {
178 os << string( indent + ParseNode::indent_by, ' ' ) << "Expression: " << endl;
179 control->printList( os, indent + 2*ParseNode::indent_by );
180 } // if
181 if ( block ) {
182 os << string( indent + ParseNode::indent_by, ' ' ) << "Branches of execution: " << endl;
183 block->printList( os, indent + 2*ParseNode::indent_by );
184 } // if
185 if ( target ) {
186 os << string( indent + ParseNode::indent_by, ' ' ) << "Target: " << get_target() << endl;
187 } // if
188 break;
189 } // switch
190}
191
192Statement *StatementNode::build() const {
193 std::list<Statement *> branches;
194 std::list<Expression *> exps;
195 std::list<Label> labs;
196
197 if ( ! labels.empty() ) {
198 std::back_insert_iterator< std::list<Label> > lab_it( labs );
199 copy( labels.begin(), labels.end(), lab_it );
200 } // if
201
202 // try {
203 buildList<Statement, StatementNode>( get_block(), branches );
204
205 switch ( type ) {
206 case Decl:
207 return new DeclStmt( labs, maybeBuild< Declaration >( decl ) );
208 case Exp:
209 {
210 Expression *e = maybeBuild< Expression >( get_control() );
211
212 if ( e )
213 return new ExprStmt( labs, e );
214 else
215 return new NullStmt( labs );
216 }
217 case If:
218 {
219 Statement *thenb = 0, *elseb = 0;
220 assert( branches.size() >= 1 );
221
222 thenb = branches.front();
223 branches.pop_front();
224 if ( ! branches.empty() ) {
225 elseb = branches.front();
226 branches.pop_front();
227 } // if
228 return new IfStmt( labs, notZeroExpr( get_control()->build() ), thenb, elseb );
229 }
230 case While:
231 assert( branches.size() == 1 );
232 return new WhileStmt( labs, notZeroExpr( get_control()->build() ), branches.front() );
233 case Do:
234 assert( branches.size() == 1 );
235 return new WhileStmt( labs, notZeroExpr( get_control()->build() ), branches.front(), true );
236 case For:
237 {
238 assert( branches.size() == 1 );
239
240 ForCtlExprNode *ctl = dynamic_cast<ForCtlExprNode *>( get_control() );
241 assert( ctl != 0 );
242
243 std::list<Statement *> init;
244 if ( ctl->get_init() != 0 ) {
245 buildList( ctl->get_init(), init );
246 } // if
247
248 Expression *cond = 0;
249 if ( ctl->get_condition() != 0 )
250 cond = notZeroExpr( ctl->get_condition()->build() );
251
252 Expression *incr = 0;
253 if ( ctl->get_change() != 0 )
254 incr = ctl->get_change()->build();
255
256 return new ForStmt( labs, init, cond, incr, branches.front() );
257 }
258 case Switch:
259 return new SwitchStmt( labs, get_control()->build(), branches );
260 case Choose:
261 return new ChooseStmt( labs, get_control()->build(), branches );
262 case Fallthru:
263 return new FallthruStmt( labs );
264 case Case:
265 return new CaseStmt( labs, get_control()->build(), branches );
266 case Default:
267 return new CaseStmt( labs, 0, branches, true );
268 case Goto:
269 {
270 if ( get_target() == "" ) { // computed goto
271 assert( get_control() != 0 );
272 return new BranchStmt( labs, get_control()->build(), BranchStmt::Goto );
273 } // if
274
275 return new BranchStmt( labs, get_target(), BranchStmt::Goto );
276 }
277 case Break:
278 return new BranchStmt( labs, get_target(), BranchStmt::Break );
279 case Continue:
280 return new BranchStmt( labs, get_target(), BranchStmt::Continue );
281 case Return:
282 case Throw :
283 buildList( get_control(), exps );
284 if ( exps.size() ==0 )
285 return new ReturnStmt( labs, 0, type == Throw );
286 if ( exps.size() > 0 )
287 return new ReturnStmt( labs, exps.back(), type == Throw );
288 case Try:
289 {
290 assert( branches.size() >= 0 );
291 CompoundStmt *tryBlock = dynamic_cast<CompoundStmt *>( branches.front());
292 branches.pop_front();
293 FinallyStmt *finallyBlock = 0;
294 if ( ( finallyBlock = dynamic_cast<FinallyStmt *>( branches.back())) ) {
295 branches.pop_back();
296 } // if
297 return new TryStmt( labs, tryBlock, branches, finallyBlock );
298 }
299 case Catch:
300 {
301 assert( branches.size() == 1 );
302
303 return new CatchStmt( labs, maybeBuild< Declaration >( decl ), branches.front(), isCatchRest );
304 }
305 case Finally:
306 {
307 assert( branches.size() == 1 );
308 CompoundStmt *block = dynamic_cast<CompoundStmt *>( branches.front() );
309 assert( block != 0 );
310
311 return new FinallyStmt( labs, block );
312 }
313 default:
314 // shouldn't be here
315 return 0;
316 } // switch
317}
318
319CompoundStmtNode::CompoundStmtNode() : first( 0 ), last( 0 ) {}
320
321CompoundStmtNode::CompoundStmtNode( const string *name_ ) : StatementNode( name_ ), first( 0 ), last( 0 ) {}
322
323CompoundStmtNode::CompoundStmtNode( StatementNode *stmt ) : first( stmt ) {
324 if ( first ) {
325 last = ( StatementNode *)( stmt->get_last());
326 } else {
327 last = 0;
328 } // if
329}
330
331CompoundStmtNode::~CompoundStmtNode() {
332 delete first;
333}
334
335void CompoundStmtNode::add_statement( StatementNode *stmt ) {
336 if ( stmt != 0 ) {
337 last->set_link( stmt );
338 last = ( StatementNode *)( stmt->get_link());
339 } // if
340}
341
342void CompoundStmtNode::print( ostream &os, int indent ) const {
343 if ( first ) {
344 first->printList( os, indent+2 );
345 } // if
346}
347
348Statement *CompoundStmtNode::build() const {
349 std::list<Label> labs;
350 const std::list<std::string> &labels = get_labels();
351
352 if ( ! labels.empty() ) {
353 std::back_insert_iterator< std::list<Label> > lab_it( labs );
354 copy( labels.begin(), labels.end(), lab_it );
355 } // if
356
357 CompoundStmt *cs = new CompoundStmt( labs );
358 buildList( first, cs->get_kids() );
359 return cs;
360}
361
362void NullStmtNode::print( ostream &os, int indent ) const {
363 os << string( indent, ' ' ) << "Null Statement:" << endl;
364}
365
366Statement *NullStmtNode::build() const {
367 return new NullStmt;
368}
369
370// Local Variables: //
371// tab-width: 4 //
372// mode: c++ //
373// compile-command: "make install" //
374// End: //
Note: See TracBrowser for help on using the repository browser.