X-Git-Url: http://andersk.mit.edu/gitweb/splint.git/blobdiff_plain/08eb3d0ec56d0574e69334b7a8f09f3bef93b9f4..312c981596ce6202de7686f2d4c46aec1bae3939:/src/cgrammar.y diff --git a/src/cgrammar.y b/src/cgrammar.y index 88df93b..3367716 100644 --- a/src/cgrammar.y +++ b/src/cgrammar.y @@ -1,32 +1,37 @@ /*;-*-C-*-; -** Copyright (c) Massachusetts Institute of Technology 1994-1998. -** All Rights Reserved. -** Unpublished rights reserved under the copyright laws of -** the United States. +** Splint - annotation-assisted static program checker +** Copyright (C) 1994-2002 University of Virginia, +** Massachusetts Institute of Technology ** -** THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED -** OR IMPLIED. ANY USE IS AT YOUR OWN RISK. +** This program is free software; you can redistribute it and/or modify it +** under the terms of the GNU General Public License as published by the +** Free Software Foundation; either version 2 of the License, or (at your +** option) any later version. +** +** This program is distributed in the hope that it will be useful, but +** WITHOUT ANY WARRANTY; without even the implied warranty of +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +** General Public License for more details. +** +** The GNU General Public License is available from http://www.gnu.org/ or +** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +** MA 02111-1307, USA. ** -** This code is distributed freely and may be used freely under the -** following conditions: -** -** 1. This notice may not be removed or altered. -** -** 2. Works derived from this code are not distributed for -** commercial gain without explicit permission from MIT -** (for permission contact lclint-request@sds.lcs.mit.edu). +** For information on splint: info@splint.org +** To report a bug: splint-bug@splint.org +** For more information: http://www.splint.org */ %{ /* ** ** cgrammar.y ** -** Yacc/Bison grammar for extended ANSI C used by LCLint. +** Yacc/Bison grammar for extended ANSI C used by Splint. ** ** original grammar by Nate Osgood --- ** hacrat@catfish.lcs.mit.edu Mon Jun 14 13:06:32 1993 ** -** changes for LCLint --- handle typedef names correctly +** changes for Splint --- handle typedef names correctly ** fix struct/union parsing bug (empty struct is accepted) ** add productions to handle macros --- require ** error correction --- main source of conflicts in grammar. @@ -42,13 +47,11 @@ /*@=allmacros@*/ extern int yylex (); -extern void swallowMacro (void); extern void yyerror (char *); -# include "lclintMacros.nf" +# include "splintMacros.nf" # include "basic.h" # include "cscanner.h" -# include "mtincludes.h" # include "cgrammar.h" # include "exprChecks.h" @@ -90,6 +93,8 @@ extern void yyerror (char *); /*@only@*/ modifiesClause modsclause; /*@only@*/ warnClause warnclause; /*@only@*/ stateClause stateclause; + /*@only@*/ pointers pointers; + /*@only@*/ functionConstraint fcnconstraint; /*@only@*/ metaStateConstraint msconstraint; /*@only@*/ metaStateSpecifier msspec; @@ -109,7 +114,7 @@ extern void yyerror (char *); /*@only@*/ uentry oentry; /*@only@*/ exprNode expr; /*@only@*/ enumNameList enumnamelist; - /*@only@*/ exprNodeList alist; + /*@only@*/ exprNodeList exprlist; /*@only@*/ sRefSet srset; /*@only@*/ cstringList cstringlist; @@ -130,7 +135,7 @@ extern void yyerror (char *); %token TSEMI TLBRACE TRBRACE TCOMMA TCOLON TASSIGN TLPAREN %token TRPAREN TLSQBR TRSQBR TDOT TAMPERSAND TEXCL TTILDE %token TMINUS TPLUS TMULT TDIV TPERCENT TLT TGT TCIRC TBAR TQUEST -%token CSIZEOF CALIGNOF ARROW_OP CTYPEDEF COFFSETOF +%token CSIZEOF CALIGNOF CTYPEOF ARROW_OP CTYPEDEF COFFSETOF %token INC_OP DEC_OP LEFT_OP RIGHT_OP %token LE_OP GE_OP EQ_OP NE_OP AND_OP OR_OP %token MUL_ASSIGN DIV_ASSIGN MOD_ASSIGN ADD_ASSIGN SUB_ASSIGN @@ -150,12 +155,13 @@ extern void yyerror (char *); %token QSETS %token QRELEASES %token QPRECLAUSE -%token QPOSTCLAUSE +%token QPOSTCLAUSE +%token QINVARIANT %token QALT %token QUNDEF QKILLED %token QENDMACRO -/* additional tokens introduced by lclint pre-processor. */ +/* additional tokens introduced by splint pre-processor. */ %token LLMACRO LLMACROITER LLMACROEND TENDMACRO /* break comments: */ @@ -176,7 +182,7 @@ extern void yyerror (char *); %token QNOTREACHED /* type qualifiers: */ -%token QCONST QVOLATILE QINLINE QEXTENSION QEXTERN QSTATIC QAUTO QREGISTER +%token QCONST QRESTRICT QVOLATILE QINLINE QEXTENSION QEXTERN QSTATIC QAUTO QREGISTER %token QOUT QIN QYIELD QONLY QTEMP QSHARED QREF QUNIQUE %token QCHECKED QUNCHECKED QCHECKEDSTRICT QCHECKMOD %token QKEEP QKEPT QPARTIAL QSPECIAL QOWNED QDEPENDENT @@ -189,7 +195,6 @@ extern void yyerror (char *); %token CGCHAR CBOOL CINT CGFLOAT CDOUBLE CVOID %token QANYTYPE QINTEGRALTYPE QUNSIGNEDINTEGRALTYPE QSIGNEDINTEGRALTYPE -%type nullterminatedQualifier %token QNULLTERMINATED %token QSETBUFFERSIZE %token QSETSTRINGLENGTH @@ -216,10 +221,11 @@ extern void yyerror (char *); %type globalsClause globalsClausePlain %type modifiesClause modifiesClausePlain nomodsClause -%type warnClause warnClausePlain +%type warnClause warnClausePlain optWarnClause %type conditionClause conditionClausePlain %type stateClause stateClausePlain %type metaStateConstraint +%type functionConstraint %type metaStateSpecifier %type metaStateExpression @@ -230,7 +236,7 @@ extern void yyerror (char *); %token METASTATE_NAME %type metaStateName %type enumerator newId /*@-varuse@*/ /* yacc declares yytranslate here */ -%type pointers /*@=varuse@*/ +%type pointers /*@=varuse@*/ %type doHeader stateTag conditionTag startConditionClause %type exitsQualifier checkQualifier stateQualifier @@ -252,8 +258,8 @@ extern void yyerror (char *); %type structNamedDeclList %type genericParamList paramTypeList paramList idList paramIdList -%type argumentExprList iterArgList -%type initList +%type argumentExprList iterArgList +%type initList namedInitializerList namedInitializerListAux %type structDeclList structDecl %type locModifies modList specClauseList optSpecClauseList %type mExpr modListExpr specClauseListExpr @@ -269,10 +275,15 @@ extern void yyerror (char *); %type BufConstraintTerm %type BufConstraintSrefExpr -%type BufConstraintList +%type BufConstraintList + +%type optStructInvariant %type BufUnaryOp +/*drl 1/6/2002 either /\ or && */ +%type constraintSeperator + %type enumeratorList %type fieldDesignator @@ -295,13 +306,15 @@ extern void yyerror (char *); %type compoundStmt compoundStmtAux compoundStmtRest compoundStmtAuxErr %type expressionStmt selectionStmt iterationStmt jumpStmt iterDefIterationStmt %type stmtErr stmtListErr compoundStmtErr expressionStmtErr -%type iterationStmtErr initializerList initializer ifPred whilePred forPred iterWhilePred +%type iterationStmtErr initializerList typeInitializerList initializer +%type ifPred whilePred forPred iterWhilePred typeInitializer + +%type designator designatorList designation -%type storageSpecifier typeQualifier typeModifier globQual -%type optGlobQuals +%type storageSpecifier typeQualifier typeModifier globQual innerMods +%type optGlobQuals innerModsList %type completeType completeTypeSpecifier optCompleteType %type completeTypeSpecifierAux altType typeExpression -/*%type lclintassertion*/ %start file @@ -312,8 +325,8 @@ file | externalDefs externalDefs - : externalDef - | externalDefs externalDef + : externalDef { context_checkGlobalScope (); } + | externalDefs externalDef { context_checkGlobalScope (); } externalDef : fcnDef optSemi { uentry_clearDecl (); } @@ -322,19 +335,21 @@ externalDef | iterDecl { uentry_clearDecl (); } | macroDef { uentry_clearDecl (); } | initializer { uentry_checkDecl (); exprNode_free ($1); } + | TSEMI { uentry_clearDecl (); lltok_free ($1); /* evans 2002-02-08: okay to have a null statement */ } | error { uentry_clearDecl (); } constantDecl : QCONSTANT completeTypeSpecifier NotType namedDecl NotType optSemi IsType QENDMACRO - { checkConstant ($2, $4); } + { checkConstant ($2, $4); lltok_free2 ($1, $8); } | QCONSTANT completeTypeSpecifier NotType namedDecl NotType TASSIGN IsType init optDeclarators optSemi QENDMACRO - { checkValueConstant ($2, $4, $8) ; } + { checkValueConstant ($2, $4, $8); lltok_free3 ($1, $6, $11); } fcnDecl : QFUNCTION { context_enterFunctionHeader (); } plainFcn optSemi QENDMACRO { declareStaticFunction ($3); context_quietExitFunction (); context_exitFunctionHeader (); + lltok_free2 ($1, $5); /*!*/ } plainFcn @@ -355,12 +370,25 @@ plainNamedDecl namedDeclBase : newId { $$ = idDecl_create ($1, qtype_unknown ()); } | IsType TLPAREN NotType namedDecl IsType TRPAREN - { $$ = idDecl_expectFunction ($4); } + { $$ = idDecl_expectFunction ($4); lltok_free2 ($2, $6); } | namedDeclBase TLSQBR TRSQBR - { $$ = idDecl_replaceCtype ($1, ctype_makeArray (idDecl_getCtype ($1))); } + { $$ = idDecl_replaceCtype ($1, ctype_makeInnerArray (idDecl_getCtype ($1))); lltok_free2 ($2, $3); } | namedDeclBase TLSQBR IsType constantExpr TRSQBR NotType - { - $$ = idDecl_replaceCtype ($1, ctype_makeFixedArray (idDecl_getCtype ($1), exprNode_getLongValue ($4))); + { + exprNode_findValue ($4); + idDecl_notExpectingFunction ($1); + + if (exprNode_hasValue ($4)) + { + $$ = idDecl_replaceCtype ($1, ctype_makeInnerFixedArray (idDecl_getCtype ($1), + exprNode_getLongValue ($4))); + } + else + { + $$ = idDecl_replaceCtype ($1, ctype_makeInnerArray (idDecl_getCtype ($1))); + } + + lltok_free2 ($2, $5); } | namedDeclBase PushType TLPAREN TRPAREN { setCurrentParams (uentryList_missingParams); } @@ -370,25 +398,37 @@ namedDeclBase uentryList_makeMissingParams ()); $$ = idDecl_replaceCtype ($1, ct); + + /*drl 7/25/01 added*/ + setImplictfcnConstraints(); + + functionClauseList_ImplictConstraints($6); + idDecl_addClauses ($$, $6); - context_popLoc (); + context_popLoc (); + lltok_free2 ($3, $4); } | namedDeclBase PushType TLPAREN genericParamList TRPAREN { setCurrentParams ($4); } functionClauses - { setImplictfcnConstraints (); + { + setImplictfcnConstraints (); + functionClauseList_ImplictConstraints($6); clearCurrentParams (); $$ = idDecl_replaceCtype ($1, ctype_makeFunction (idDecl_getCtype ($1), $4)); idDecl_addClauses ($$, $7); context_popLoc (); + lltok_free2 ($3, $5); } plainNamedDeclBase : newId { $$ = idDecl_create ($1, qtype_unknown ()); } | IsType TLPAREN NotType plainNamedDecl IsType TRPAREN - { $$ = idDecl_expectFunction ($4); } + { $$ = idDecl_expectFunction ($4); lltok_free2 ($2, $6); } | plainNamedDeclBase TLSQBR TRSQBR - { $$ = idDecl_replaceCtype ($1, ctype_makeArray (idDecl_getCtype ($1))); } + { $$ = idDecl_replaceCtype ($1, ctype_makeInnerArray (idDecl_getCtype ($1))); + lltok_free2 ($2, $3); + } | plainNamedDeclBase TLSQBR IsType constantExpr TRSQBR NotType { int value; @@ -403,7 +443,8 @@ plainNamedDeclBase value = 0; } - $$ = idDecl_replaceCtype ($1, ctype_makeFixedArray (idDecl_getCtype ($1), value)); + $$ = idDecl_replaceCtype ($1, ctype_makeInnerFixedArray (idDecl_getCtype ($1), value)); + lltok_free2 ($2, $5); } | plainNamedDeclBase PushType TLPAREN TRPAREN { setCurrentParams (uentryList_missingParams); } @@ -415,6 +456,7 @@ plainNamedDeclBase $$ = idDecl_replaceCtype ($1, ct); idDecl_addClauses ($$, $6); context_popLoc (); + lltok_free2 ($3, $4); } | plainNamedDeclBase PushType TLPAREN genericParamList TRPAREN { setCurrentParams ($4); } @@ -424,44 +466,59 @@ plainNamedDeclBase $$ = idDecl_replaceCtype ($1, ctype_makeFunction (idDecl_getCtype ($1), $4)); idDecl_addClauses ($$, $7); context_popLoc (); + lltok_free ($3); + /*!! lltok_free2 ($3, $5); */ } iterDecl : QITER newId TLPAREN genericParamList TRPAREN { setCurrentParams ($4); } functionClausesPlain { clearCurrentParams (); } optSemi QENDMACRO - { declareCIter ($2, $4); } + { declareCIter ($2, $4); + lltok_free3 ($1, $3, $5); + } macroDef - : LLMACRO macroBody TENDMACRO { exprNode_checkMacroBody ($2); } - | LLMACROITER iterBody TENDMACRO { exprNode_checkIterBody ($2); } - | LLMACROEND endBody TENDMACRO { exprNode_checkIterEnd ($2); } - | LLMACRO TENDMACRO /* no stmt */ { exprChecks_checkEmptyMacroBody (); } + : LLMACRO macroBody TENDMACRO { exprNode_checkMacroBody ($2); lltok_free2 ($1, $3); } + | LLMACROITER iterBody TENDMACRO { exprNode_checkIterBody ($2); lltok_free2 ($1, $3); } + | LLMACROEND endBody TENDMACRO { exprNode_checkIterEnd ($2); lltok_free2 ($1, $3);} + | LLMACRO TENDMACRO /* no stmt */ { exprChecks_checkEmptyMacroBody (); lltok_free2 ($1, $2); } fcnDefHdr : fcnDefHdrAux { clabstract_declareFunction ($1); } metaStateConstraint : metaStateSpecifier TASSIGN metaStateExpression - { $$ = metaStateConstraint_create ($1, $3); } + { $$ = metaStateConstraint_create ($1, $3); lltok_free ($2); } metaStateSpecifier - : BufConstraintSrefExpr { cscanner_expectingMetaStateName (); } TCOLON metaStateName - { cscanner_clearExpectingMetaStateName (); - $$ = metaStateSpecifier_create ($1, $4); } + : BufConstraintSrefExpr { cscanner_expectingMetaStateName (); } TCOLON metaStateName + { cscanner_clearExpectingMetaStateName (); + $$ = metaStateSpecifier_create ($1, $4); + lltok_free ($3); + } + | CTOK_ELIPSIS { cscanner_expectingMetaStateName (); } TCOLON metaStateName + { cscanner_clearExpectingMetaStateName (); + $$ = metaStateSpecifier_createElipsis ($4); + lltok_free2 ($1, $3); + } metaStateExpression : metaStateSpecifier { $$ = metaStateExpression_create ($1); } -| metaStateSpecifier TBAR metaStateExpression { $$ = metaStateExpression_createMerge ($1, $3); } +| metaStateSpecifier TBAR metaStateExpression { $$ = metaStateExpression_createMerge ($1, $3); lltok_free ($2); } metaStateName : METASTATE_NAME /*drl*/ +constraintSeperator +: TCAND +| AND_OP + BufConstraintList -: BufConstraint TCAND BufConstraintList { $$ = constraintList_add ($3, $1); } -| BufConstraint {constraintList c; c = constraintList_makeNew(); c = constraintList_add (c, $1); $$ = c} +: BufConstraint constraintSeperator BufConstraintList { $$ = constraintList_add ($3, $1); } +| BufConstraint { $$ = constraintList_single ($1); } BufConstraint : BufConstraintExpr relationalOp BufConstraintExpr { @@ -485,16 +542,8 @@ BufConstraintExpr $$ = constraintExpr_parseMakeBinaryOp ($2, $3, $4); } BufConstraintTerm - : BufConstraintSrefExpr { $$ = constraintExpr_makeTermsRef($1);} - | CCONSTANT - { - /* char *t; int c; - t = cstring_toCharsSafe (exprNode_unparse($1)); - c = atoi( t ); - */ - - $$ = constraintExpr_makeIntLiteral (exprNode_getLongValue ($1)); - } + : BufConstraintSrefExpr { $$ = constraintExpr_makeTermsRef ($1);} + | CCONSTANT { $$ = constraintExpr_makeIntLiteral (exprNode_getLongValue ($1)); } BufConstraintSrefExpr : id @@ -616,14 +665,22 @@ flagSpec flagId : NEW_IDENTIFIER +optWarnClause + : warnClause + | /* empty */ { $$ = warnClause_undefined; } + warnClause : warnClausePlain QENDMACRO { $$ = $1; } warnClausePlain : QWARN flagSpec cconstantExpr - { $$ = warnClause_create ($1, $2, $3); } + { + llassert (exprNode_knownStringValue ($3)); + $$ = warnClause_create ($1, $2, cstring_copy (multiVal_forceString (exprNode_getValue ($3)))); + exprNode_free ($3); + } | QWARN flagSpec - { $$ = warnClause_create ($1, $2, exprNode_undefined); } + { $$ = warnClause_create ($1, $2, cstring_undefined); } globIdList : globIdListExpr { $$ = globSet_single ($1); } @@ -662,7 +719,8 @@ conditionTag fcnDefHdrAux : namedDecl { - qtype qint = qtype_create (ctype_int); + /**!!! deal with fred; fred (int); declarations! **/ + qtype qint = qtype_create (ctype_int); $$ = idDecl_fixBase ($1, qint); qtype_free (qint); } @@ -676,20 +734,20 @@ fcnBody exprNode_checkFunctionBody ($3); $$ = $3; context_exitInner ($3); } - | initializerList - { doneParams (); context_enterInnerContext (); } + | { context_enterOldStyleScope (); } initializerList + { oldStyleDoneParams (); context_enterInnerContext (); } compoundStmt { - context_exitInner ($3); - exprNode_checkFunctionBody ($3); - $$ = $3; /* old style */ + exprNode_checkFunctionBody ($4); + $$ = $4; /* oldstyle */ + context_exitInner ($4); } fcnDef : fcnDefHdr fcnBody { context_setFunctionDefined (exprNode_loc ($2)); - exprNode_checkFunction (context_getHeader (), $2); + exprNode_checkFunction (context_getHeader (), $2); /* DRL 8 8 2000 */ context_exitFunction (); @@ -760,6 +818,9 @@ primaryExpr | TLPAREN expr TRPAREN { $$ = exprNode_addParens ($1, $2); } | TYPE_NAME_OR_ID { $$ = exprNode_fromIdentifier (coerceId ($1)); } | QEXTENSION { $$ = exprNode_makeError (); } + | TLPAREN { exprChecks_inCompoundStatementExpression (); } + compoundStmt TRPAREN + { exprChecks_leaveCompoundStatementExpression (); $$ = exprNode_compoundStatementExpression ($1, $3); } postfixExpr : primaryExpr @@ -771,7 +832,9 @@ postfixExpr | postfixExpr NotType ARROW_OP newId IsType { $$ = exprNode_arrowAccess ($1, $3, $4); } | postfixExpr INC_OP { $$ = exprNode_postOp ($1, $2); } | postfixExpr DEC_OP { $$ = exprNode_postOp ($1, $2); } - + | TLPAREN typeExpression TRPAREN TLBRACE typeInitializerList optComma TRBRACE + { /* added for C99 */ $$ = exprNode_undefined; /*@i87 no checking */ } + argumentExprList : assignExpr { $$ = exprNodeList_singleton ($1); } | argumentExprList TCOMMA assignExpr { $$ = exprNodeList_push ($1, $3); } @@ -790,27 +853,30 @@ unaryExpr | offsetofExpr { $$ = $1; } fieldDesignator - : fieldDesignator TDOT newId { $$ = cstringList_add ($1, $3); } - | newId { $$ = cstringList_single ($1); } + : fieldDesignator TDOT newId { $$ = cstringList_add ($1, $3); lltok_free ($2); } + | fieldDesignator TLSQBR expr TRSQBR { $$ = $1; lltok_free2 ($2, $4); } + /* evans 2002-07-02: offsetof designators can use array indexes */ + | newId { $$ = cstringList_single ($1); } offsetofExpr : COFFSETOF IsType TLPAREN typeExpression NotType TCOMMA fieldDesignator TRPAREN IsType - { $$ = exprNode_offsetof ($4, $7); } + { $$ = exprNode_offsetof ($4, $7); + lltok_free3 ($1, $3, $6); lltok_free ($8); } sizeofExpr : IsType { context_setProtectVars (); } sizeofExprAux { context_sizeofReleaseVars (); $$ = $3; } sizeofExprAux - : CSIZEOF TLPAREN typeExpression TRPAREN { $$ = exprNode_sizeofType ($3); } - | CSIZEOF unaryExpr { $$ = exprNode_sizeofExpr ($2); } - | CALIGNOF TLPAREN typeExpression TRPAREN { $$ = exprNode_alignofType ($3); } - | CALIGNOF unaryExpr { $$ = exprNode_alignofExpr ($2); } + : CSIZEOF TLPAREN typeExpression TRPAREN { $$ = exprNode_sizeofType ($3); lltok_free3 ($1, $2, $4); } + | CSIZEOF unaryExpr { $$ = exprNode_sizeofExpr ($2); lltok_free ($1); } + | CALIGNOF TLPAREN typeExpression TRPAREN { $$ = exprNode_alignofType ($3); lltok_free3 ($1, $2, $4); } + | CALIGNOF unaryExpr { $$ = exprNode_alignofExpr ($2); lltok_free ($1); } castExpr : unaryExpr | TLPAREN typeExpression TRPAREN castExpr - { $$ = exprNode_cast ($1, $4, $2); } + { $$ = exprNode_cast ($1, $4, $2); lltok_free ($3); } timesExpr : castExpr @@ -918,8 +984,8 @@ initializer instanceDecl : completeTypeSpecifier IsType TSEMI - { $$ = exprNode_makeError (); } - /* + { $$ = exprNode_makeError (); } + /* ** This causes r/r conflicts with function definitions. ** Instead we need to snarf one first. (gack) ** @@ -960,7 +1026,8 @@ namedInitializer typeDecl : CTYPEDEF completeTypeSpecifier { setProcessingTypedef ($2); } - NotType namedInitializerList IsType TSEMI { unsetProcessingTypedef (); } + NotType namedInitializerList IsType optWarnClause TSEMI + { clabstract_declareType ($5, $7); } | CTYPEDEF completeTypeSpecifier IsType TSEMI { /* in the ANSI grammar, semantics unclear */ } | CTYPEDEF namedInitializerList IsType TSEMI { /* in the ANSI grammar, semantics unclear */ } @@ -971,11 +1038,11 @@ PushType : { g_expectingTypeName = TRUE; context_pushLoc (); } namedInitializerList - : namedInitializerListAux IsType { ; } + : namedInitializerListAux IsType { $$ = $1; } namedInitializerListAux - : namedInitializer { ; } - | namedInitializerList TCOMMA NotType namedInitializer { ; } + : namedInitializer { $$ = exprNodeList_singleton ($1); } + | namedInitializerList TCOMMA NotType namedInitializer { $$ = exprNodeList_push ($1, $4); } optDeclarators : /* empty */ { $$ = exprNode_makeError (); } @@ -983,9 +1050,26 @@ optDeclarators init : assignExpr - | TLBRACE initList TRBRACE { $$ = exprNode_makeInitBlock ($1, $2); } - | TLBRACE initList TCOMMA TRBRACE { $$ = exprNode_makeInitBlock ($1, $2); } + | TLBRACE initList TRBRACE { $$ = exprNode_makeInitBlock ($1, $2); lltok_free ($3); } + | TLBRACE initList TCOMMA TRBRACE { $$ = exprNode_makeInitBlock ($1, $2); lltok_free2 ($3, $4); } + | designation init { $$ = exprNode_undefined; } +/* +** Splint parses these (added in ISO C99), but no checking yet... +*/ + +designation + : designatorList TASSIGN { $$ = $1; } + | newId TCOLON { $$ = exprNode_undefined; + /* gcc extension, obsolete since 2.5 */ } + +designatorList + : designator { $$ = exprNode_undefined; } + | designatorList designator { $$ = exprNode_undefined; } + +designator + : TLSQBR constantExpr TRSQBR { $$ = exprNode_undefined; } + | TDOT newId { $$ = exprNode_undefined; } initList : init @@ -1005,9 +1089,6 @@ storageSpecifier | QAUTO { $$ = qual_createAuto (); } | QREGISTER { $$ = qual_createRegister (); } -nullterminatedQualifier: - QNULLTERMINATED IsType { $$ = qual_createNullTerminated (); } - stateClause : stateClausePlain QENDMACRO { $$ = $1; } @@ -1053,7 +1134,7 @@ conditionClausePlain enterParamsTemp (); sRef_setGlobalScopeSafe (); } - BufConstraintList optSemi IsType + functionConstraint optSemi IsType { context_exitFunctionHeader (); exitParamsTemp (); @@ -1073,34 +1154,13 @@ conditionClausePlain { BADBRANCH; } - } - | startConditionClause - { - context_setProtectVars (); - enterParamsTemp (); - sRef_setGlobalScopeSafe (); - } - metaStateConstraint optSemi IsType - { - context_exitFunctionHeader (); - exitParamsTemp (); - sRef_clearGlobalScopeSafe (); - context_releaseVars (); - DPRINTF (("done optGlobBufConstraintsAux\n")); - if (lltok_isEnsures ($1)) - { - $$ = functionClause_createMetaEnsures ($3); - } - else if (lltok_isRequires ($1)) - { - $$ = functionClause_createMetaRequires ($3); - } - else - { - BADBRANCH; - } + DPRINTF (("FunctionclauseS: %s", functionClause_unparse ($$))); } + +functionConstraint + : BufConstraintList { $$ = functionConstraint_createBufferConstraint ($1); } + | metaStateConstraint { $$ = functionConstraint_createMetaStateConstraint ($1); DPRINTF (("Made constraint: %s", functionConstraint_unparse ($$))); } exitsQualifier : QEXITS { $$ = qual_createExits (); } @@ -1131,8 +1191,10 @@ stateQualifier | QNOTNULL { $$ = qual_createNotNull (); } | QEXPOSED { $$ = qual_createExposed (); } | QOBSERVER { $$ = qual_createObserver (); } + | QNULLTERMINATED { $$ = qual_createNullTerminated (); } | CANNOTATION { $$ = qual_createMetaState ($1); } + paramQualifier : QRETURNED { $$ = qual_createReturned (); } | QSEF { $$ = qual_createSef (); } @@ -1174,6 +1236,7 @@ definedQualifier typeQualifier : QCONST IsType { $$ = qual_createConst (); } | QVOLATILE IsType { $$ = qual_createVolatile (); } + | QRESTRICT IsType { $$ = qual_createRestrict (); } | definedQualifier IsType { $$ = $1; } | stateQualifier IsType { $$ = $1; } | exitsQualifier IsType { $$ = $1; } @@ -1195,14 +1258,14 @@ typeSpecifier | CGFLOAT NotType | CDOUBLE NotType | CVOID NotType - | QANYTYPE NotType { $$ = ctype_unknown; } + | QANYTYPE NotType { $$ = ctype_makeAnytype (); } | QINTEGRALTYPE NotType { $$ = ctype_anyintegral; } | QUNSIGNEDINTEGRALTYPE NotType { $$ = ctype_unsignedintegral; } | QSIGNEDINTEGRALTYPE NotType { $$ = ctype_signedintegral; } | typeName NotType | suSpc NotType | enumSpc NotType - | typeModifier NotType { $$ = ctype_fromQual ($1); } + | typeModifier NotType { $$ = ctype_fromQual ($1); } completeType : IsType completeTypeSpecifier IsType @@ -1227,12 +1290,19 @@ optCompleteType : /* empty */ { $$ = qtype_unknown (); } | completeTypeSpecifier { $$ = $1; } + +optStructInvariant +: /* empty */ { $$ = constraintList_undefined; } +/* drl commenting before a CVS commit + | QINVARIANT BufConstraintList QENDMACRO { $$ = $2 } +*/ suSpc : NotType CSTRUCT newId IsType TLBRACE { sRef_setGlobalScopeSafe (); } CreateStructInnerScope - structDeclList DeleteStructInnerScope { sRef_clearGlobalScopeSafe (); } + structDeclList DeleteStructInnerScope { sRef_clearGlobalScopeSafe (); } TRBRACE - { $$ = declareStruct ($3, $8); } + optStructInvariant + { ctype ct; ct = declareStruct ($3, $8); setGlobalStructInfo(ct, $12); $$ = ct; } | NotType CUNION newId IsType TLBRACE { sRef_setGlobalScopeSafe (); } CreateStructInnerScope structDeclList DeleteStructInnerScope { sRef_clearGlobalScopeSafe (); } @@ -1254,10 +1324,10 @@ suSpc { $$ = declareUnnamedUnion ($7); } | NotType CSTRUCT IsType TLBRACE TRBRACE { $$ = ctype_createUnnamedStruct (uentryList_new ()); } - | NotType CUNION IsType TLBRACE TRBRACE + | NotType CUNION IsType TLBRACE TRBRACE { $$ = ctype_createUnnamedUnion (uentryList_new ()); } | NotType CSTRUCT newId NotType { $$ = handleStruct ($3); } - | NotType CUNION newId NotType { $$ = handleUnion ($3); } + | NotType CUNION newId NotType { $$ = handleUnion ($3); } NotType : { g_expectingTypeName = FALSE; } @@ -1317,9 +1387,8 @@ optNamedDecl | pointers TYPE_NAME { qtype qt = qtype_unknown (); - qtype_adjustPointers ($1, qt); - $$ = idDecl_create (cstring_copy (LastIdentifier ()), qt); + $$ = idDecl_create (cstring_copy (cscanner_observeLastIdentifier ()), qt); } | pointers optNamedDecl { $$ = $2; qtype_adjustPointers ($1, idDecl_getTyp ($$)); } @@ -1334,18 +1403,19 @@ genericParamList | NotType paramIdList { $$ = handleParamIdList ($2); } innerMods - : QCONST { /* ignored for now */; } - | QVOLATILE { ; } + : QCONST { $$ = qual_createConst (); } + | QRESTRICT { $$ = qual_createRestrict (); } + | QVOLATILE { $$ = qual_createVolatile (); } innerModsList - : innerMods { ; } - | innerModsList innerMods { ; } + : innerMods { $$ = qualList_single ($1); } + | innerModsList innerMods { $$ = qualList_add ($1, $2); } pointers - : TMULT { $$ = 1; } - | TMULT innerModsList { $$ = 1; } - | TMULT pointers { $$ = 1 + $2; } - | TMULT innerModsList pointers { $$ = 1 + $3; } + : TMULT { $$ = pointers_create ($1); } + | TMULT innerModsList { $$ = pointers_createMods ($1, $2); } + | TMULT pointers { $$ = pointers_extend (pointers_create ($1), $2); } + | TMULT innerModsList pointers { $$ = pointers_extend (pointers_createMods ($1, $2), $3); } paramIdList : idList @@ -1412,9 +1482,9 @@ abstractDeclBase | TLSQBR TRSQBR { $$ = ctype_makeArray (ctype_unknown); } | TLSQBR constantExpr TRSQBR { $$ = ctype_makeFixedArray (ctype_unknown, exprNode_getLongValue ($2)); } - | abstractDeclBase TLSQBR TRSQBR { $$ = ctype_makeArray ($1); } + | abstractDeclBase TLSQBR TRSQBR { $$ = ctype_makeInnerArray ($1); } | abstractDeclBase TLSQBR constantExpr TRSQBR - { $$ = ctype_makeFixedArray ($1, exprNode_getLongValue ($3)); } + { $$ = ctype_makeInnerFixedArray ($1, exprNode_getLongValue ($3)); } | IsType TLPAREN TRPAREN { $$ = ctype_makeFunction (ctype_unknown, uentryList_makeMissingParams ()); } | IsType TLPAREN paramTypeList TRPAREN @@ -1436,18 +1506,7 @@ stmt | iterationStmt | iterStmt | jumpStmt -/* | lclintassertion {$$ = $1; printf ("Doing stmt lclintassertion\n"); }*/ -/* -lclintassertion - : QSETBUFFERSIZE id CCONSTANT QENDMACRO { printf(" QSETBUFFERSIZE id CCONSTANT HEllo World\n"); uentry_setBufferSize($2, $3); $$ = exprNode_createTok ($4); - } - | QSETSTRINGLENGTH id CCONSTANT QENDMACRO { printf(" QSETSTRINGLENGTH id CCONSTANT HEllo World\n"); uentry_setStringLength($2, $3); $$ = exprNode_createTok ($4); - } - | QTESTINRANGE id CCONSTANT QENDMACRO {printf(" QTESTINRANGE\n"); uentry_testInRange($2, $3); $$ = exprNode_createTok ($4); - } - -/* | QSETBUFFERSIZE id id {$$ = $2; printf(" QSETBUFFERSIZE id id HEllo World\n");} */ iterBody : iterDefStmtList { $$ = $1; } @@ -1500,9 +1559,9 @@ iterDefStmt | error { $$ = exprNode_makeError (); } iterSelectionStmt - : ifPred iterDefStmt + : ifPred { exprNode_checkIfPred ($1); } iterDefStmt { /* don't: context_exitTrueClause ($1, $2); */ - $$ = exprNode_if ($1, $2); + $$ = exprNode_if ($1, $3); } openScope @@ -1532,20 +1591,28 @@ labeledStmt : newId TCOLON { $$ = exprNode_labelMarker ($1); } | QNOTREACHED stmt { $$ = exprNode_notReached ($2); } +/* +** We allow more than one QFALLTHROUGH token to support mixed lint/splint markers. +*/ + +optExtraFallThroughs + : /* empty */ { ; } + | QFALLTHROUGH optExtraFallThroughs { ; } + /* Note that we can semantically check that the object to the case is indeed constant. In this case, we may not want to go through this effort */ caseStmt : CASE constantExpr { context_enterCaseClause ($2); } TCOLON { $$ = exprNode_caseMarker ($2, FALSE); } - | QFALLTHROUGH CASE constantExpr { context_enterCaseClause ($3); } - TCOLON { $$ = exprNode_caseMarker ($3, TRUE); } + | QFALLTHROUGH optExtraFallThroughs CASE constantExpr { context_enterCaseClause ($4); } + TCOLON { $$ = exprNode_caseMarker ($4, TRUE); } defaultStmt : DEFAULT { context_enterCaseClause (exprNode_undefined); } TCOLON { $$ = exprNode_defaultMarker ($1, FALSE); } - | QFALLTHROUGH DEFAULT { context_enterCaseClause (exprNode_undefined); } - TCOLON { $$ = exprNode_defaultMarker ($2, TRUE); } + | QFALLTHROUGH optExtraFallThroughs DEFAULT { context_enterCaseClause (exprNode_undefined); } + TCOLON { $$ = exprNode_defaultMarker ($3, TRUE); } compoundStmt : TLPAREN compoundStmt TRPAREN { $$ = $2; } @@ -1586,7 +1653,6 @@ compoundStmtRest lltok_getLoc ($3))); } - compoundStmtAux : TLBRACE compoundStmtRest { $$ = exprNode_makeBlock ($2); } @@ -1609,6 +1675,14 @@ initializerList : initializer { $$ = $1; } | initializerList initializer { $$ = exprNode_concat ($1, $2); } +typeInitializerList + : typeInitializer { $$ = $1; } + | typeInitializerList TCOMMA typeInitializer { $$ = exprNode_concat ($1, $3); } + +typeInitializer + : assignExpr { $$ = $1; } + | TLBRACE typeInitializerList optComma TRBRACE { $$ = $2; } + stmtList : stmt { $$ = $1; } | stmtList stmt { $$ = exprNode_concat ($1, $2); } @@ -1624,7 +1698,12 @@ expressionStmtErr ifPred : CIF TLPAREN expr TRPAREN - { $$ = $3; exprNode_produceGuards ($3); context_enterTrueClause ($3); } + { + exprNode_produceGuards ($3); context_enterTrueClause ($3); + exprNode_checkIfPred ($3); + $$ = $3; + } + /* ** not ANSI: | CIF TLPAREN compoundStmt TRPAREN ** { $$ = $3; context_enterTrueClause (); } @@ -1636,7 +1715,7 @@ selectionStmt context_exitTrueClause ($1, $2); $$ = exprNode_if ($1, $2); } - | ifPred stmt CELSE { context_enterFalseClause ($1); } stmt + | ifPred stmt CELSE { context_enterFalseClause ($1); } stmt { context_exitClause ($1, $2, $5); $$ = exprNode_ifelse ($1, $2, $5); @@ -1678,7 +1757,7 @@ iterArgExpr } else { - $$ = exprNode_iterNewId (cstring_copy (LastIdentifier ())); + $$ = exprNode_iterNewId (cstring_copy (cscanner_observeLastIdentifier ())); } } | NEW_IDENTIFIER { $$ = exprNode_iterNewId ($1); } @@ -1832,6 +1911,10 @@ optSemi : | TSEMI { ; } +optComma + : + | TCOMMA { ; } + id : IDENTIFIER @@ -1845,6 +1928,8 @@ newId typeName : TYPE_NAME | TYPE_NAME_OR_ID { $$ = ctype_unknown; } + | CTYPEOF TLPAREN expr TRPAREN { $$ = exprNode_getType ($3); exprNode_free ($3); } + | CTYPEOF TLPAREN typeExpression TRPAREN { $$ = qtype_getType ($3); } %% @@ -1873,7 +1958,7 @@ void yyerror (/*@unused@*/ char *s) llerror (FLG_SYNTAX, message ("Macro syntax not parseable: %s", context_inFunctionName ())); - if (context_inMacroUnknown ()) + if (context_inUnknownMacro ()) { if (!givehint) { @@ -1884,7 +1969,7 @@ void yyerror (/*@unused@*/ char *s) } } - swallowMacro (); + cscanner_swallowMacro (); context_exitAllClausesQuiet (); } else