/* $XConsortium: expr.c /main/9 1996/03/01 14:32:05 kaleb $ */ /* $XFree86: xc/programs/xkbcomp/expr.c,v 3.2 1996/08/26 15:01:40 dawes Exp $ */ /************************************************************ Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Silicon Graphics not be used in advertising or publicity pertaining to distribution of the software without specific prior written permission. Silicon Graphics makes no representation about the suitability of this software for any purpose. It is provided "as is" without any express or implied warranty. SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ********************************************************/ #include "xkbcomp.h" #include "tokens.h" #include "expr.h" #include /***====================================================================***/ char * #if NeedFunctionPrototypes exprOpText(unsigned type) #else exprOpText(type) unsigned type; #endif { static char buf[32]; switch (type) { case ExprValue: strcpy(buf,"literal"); break; case ExprIdent: strcpy(buf,"identifier"); break; case ExprActionDecl: strcpy(buf,"action declaration"); break; case ExprFieldRef: strcpy(buf,"field reference"); break; case ExprArrayRef: strcpy(buf,"array reference"); break; case ExprKeysymList: strcpy(buf,"list of keysyms"); break; case ExprActionList: strcpy(buf,"list of actions"); break; case OpAdd: strcpy(buf,"addition"); break; case OpSubtract: strcpy(buf,"subtraction"); break; case OpMultiply: strcpy(buf,"multiplication"); break; case OpDivide: strcpy(buf,"division"); break; case OpAssign: strcpy(buf,"assignment"); break; case OpNot: strcpy(buf,"logical not"); break; case OpNegate: strcpy(buf,"arithmetic negation"); break; case OpInvert: strcpy(buf,"bitwise inversion"); break; case OpUnaryPlus: strcpy(buf,"plus sign"); break; default: sprintf(buf,"illegal(%d)",type); break; } return buf; } char * #if NeedFunctionPrototypes exprTypeText(unsigned type) #else exprTypeText(type) unsigned type; #endif { static char buf[20]; switch (type) { case TypeUnknown: strcpy(buf,"unknown"); break; case TypeBoolean: strcpy(buf,"boolean"); break; case TypeInt: strcpy(buf,"int"); break; case TypeString: strcpy(buf,"string"); break; case TypeAction: strcpy(buf,"action"); break; case TypeKeyName: strcpy(buf,"keyname"); break; default: sprintf(buf,"illegal(%d)",type); break; } return buf; } int #if NeedFunctionPrototypes ExprResolveLhs( ExprDef * expr, ExprResult * elem_rtrn, ExprResult * field_rtrn, ExprDef ** index_rtrn) #else ExprResolveLhs(expr,elem_rtrn,field_rtrn,index_rtrn) ExprDef * expr; ExprResult * elem_rtrn; ExprResult * field_rtrn; ExprDef ** index_rtrn; #endif { switch (expr->op) { case ExprIdent: elem_rtrn->str= NULL; field_rtrn->str= XkbAtomGetString(NULL,expr->value.str); *index_rtrn= NULL; return True; case ExprFieldRef: elem_rtrn->str= XkbAtomGetString(NULL,expr->value.field.element); field_rtrn->str= XkbAtomGetString(NULL,expr->value.field.field); *index_rtrn= NULL; return True; case ExprArrayRef: elem_rtrn->str= XkbAtomGetString(NULL,expr->value.array.element); field_rtrn->str= XkbAtomGetString(NULL,expr->value.array.field); *index_rtrn= expr->value.array.entry; return True; } WSGO1("Unexpected operator %d in ResolveLhs\n",expr->op); return False; } Bool #if NeedFunctionPrototypes SimpleLookup( XPointer priv, Atom elem, Atom field, unsigned type, ExprResult * val_rtrn) #else SimpleLookup(priv,elem,field,type,val_rtrn) XPointer priv; Atom elem; Atom field; unsigned type; ExprResult * val_rtrn; #endif { LookupEntry * entry; register char * str; if ((priv==NULL)|| (field==None)||(elem!=None)|| ((type!=TypeInt)&&(type!=TypeFloat))) { return False; } str= XkbAtomGetString(NULL,field); for (entry=(LookupEntry *)priv;(entry!=NULL)&&(entry->name!=NULL);entry++) { if (uStrCaseCmp(str,entry->name)==0) { val_rtrn->uval= entry->result; if (type==TypeFloat) val_rtrn->uval*= XkbGeomPtsPerMM; return True; } } return False; } Bool #if NeedFunctionPrototypes RadioLookup( XPointer priv, Atom elem, Atom field, unsigned type, ExprResult * val_rtrn) #else RadioLookup(priv,elem,field,type,val_rtrn) XPointer priv; Atom elem; Atom field; unsigned type; ExprResult * val_rtrn; #endif { register char * str; int rg; if ((field==None)||(elem!=None)||(type!=TypeInt)) return False; str= XkbAtomGetString(NULL,field); if (str) { if (uStrCasePrefix("group",str)) str+= strlen("group"); else if (uStrCasePrefix("radiogroup",str)) str+= strlen("radiogroup"); else if (uStrCasePrefix("rg",str)) str+= strlen("rg"); else if (!isdigit(str[0])) str= NULL; } if ((!str)||(sscanf(str,"%i",&rg)<1)||(rg<1)||(rg>XkbMaxRadioGroups)) return False; val_rtrn->uval= rg; return True; } int #if NeedFunctionPrototypes TableLookup( XPointer priv, Atom elem, Atom field, unsigned type, ExprResult * val_rtrn) #else TableLookup(priv,elem,field,type,val_rtrn) XPointer priv; Atom elem; Atom field; unsigned type; ExprResult * val_rtrn; #endif { LookupTable * tbl= (LookupTable *)priv; register char * str; if ((priv==NULL)||(field==None)||(type!=TypeInt)) return False; str= XkbAtomGetString(NULL,elem); while (tbl) { if (((str==NULL)&&(tbl->element==NULL))|| ((str!=NULL)&&(tbl->element!=NULL)&& (uStrCaseCmp(str,tbl->element)==0))) { break; } tbl= tbl->nextElement; } if (tbl==NULL) /* didn't find a matching element */ return False; priv= (XPointer)tbl->entries; return SimpleLookup(priv,(Atom)None,field,type,val_rtrn); } static LookupEntry modIndexNames[] = { { "shift", ShiftMapIndex }, { "control", ControlMapIndex }, { "lock", LockMapIndex }, { "mod1", Mod1MapIndex }, { "mod2", Mod2MapIndex }, { "mod3", Mod3MapIndex }, { "mod4", Mod4MapIndex }, { "mod5", Mod5MapIndex }, { NULL, 0 } }; int #if NeedFunctionPrototypes LookupModIndex( XPointer priv, Atom elem, Atom field, unsigned type, ExprResult * val_rtrn) #else LookupModIndex(priv,elem,field,type,val_rtrn) XPointer priv; Atom elem; Atom field; unsigned type; ExprResult * val_rtrn; #endif { return SimpleLookup((XPointer)modIndexNames,elem,field,type,val_rtrn); } int #if NeedFunctionPrototypes LookupModMask( XPointer priv, Atom elem, Atom field, unsigned type, ExprResult * val_rtrn) #else LookupModMask(priv,elem,field,type,val_rtrn) XPointer priv; Atom elem; Atom field; unsigned type; ExprResult * val_rtrn; #endif { char *str; if ((elem!=None)||(type!=TypeInt)) return False; str= XkbAtomGetString(NULL,field); if (str==NULL) return False; if (uStrCaseCmp(str,"all")==0) val_rtrn->uval= 0xff; else if (uStrCaseCmp(str,"none")==0) val_rtrn->uval= 0; else if (LookupModIndex(priv,elem,field,type,val_rtrn)) val_rtrn->uval= (1<uval); else if (priv != NULL) { LookupPriv *lpriv= (LookupPriv *)priv; if ((lpriv->chain==NULL)|| (!(*lpriv->chain)(lpriv->chainPriv,elem,field,type,val_rtrn))) return False; } else return False; return True; } int #if NeedFunctionPrototypes ExprResolveModIndex( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveModIndex(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; char *bogus= NULL; switch (expr->op) { case ExprValue: if (expr->type!=TypeInt) { ERROR1("Found constant of type %s where a modifier mask was expected\n", exprTypeText(expr->type)); return False; } else if ((expr->value.ival>=XkbNumModifiers)||(expr->value.ival<0)){ ERROR2("Illegal modifier index (%d, must be 0..%d)\n", expr->value.ival,XkbNumModifiers-1); return False; } val_rtrn->ival= expr->value.ival; return True; case ExprIdent: if (LookupModIndex(lookupPriv,(Atom)None,expr->value.str, (unsigned)TypeInt,val_rtrn)) { return True; } if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeInt,val_rtrn); } if (!ok) ERROR1("Cannot determine modifier index for \"%s\"\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); break; case ExprFieldRef: bogus= "field reference"; break; case ExprArrayRef: bogus= "array reference"; break; case ExprActionDecl: bogus= "function"; break; case OpAdd: case OpSubtract: case OpMultiply: case OpDivide: case OpInvert: case OpNegate: case OpNot: case OpUnaryPlus: bogus= "arithmetic operations"; break; case OpAssign: bogus= "assignment"; break; default: WSGO1("Unknown operator %d in ResolveModIndex\n",expr->op); return False; } if (bogus) { ERROR1("Modifier index must be a name or number, %s ignored\n",bogus); return False; } return ok; } int #if NeedFunctionPrototypes ExprResolveModMask( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveModMask(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { LookupPriv priv; priv.priv= NULL; priv.chain= lookup; priv.chainPriv= lookupPriv; return ExprResolveMask(expr,val_rtrn,LookupModMask,(XPointer)&priv); } int #if NeedFunctionPrototypes ExprResolveBoolean( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveBoolean(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; char * bogus= NULL; switch (expr->op) { case ExprValue: if (expr->type!=TypeBoolean) { ERROR1("Found constant of type %s where boolean was expected\n", exprTypeText(expr->type)); return False; } val_rtrn->ival= expr->value.ival; return True; case ExprIdent: bogus= XkbAtomGetString(NULL,expr->value.str); if (bogus) { if ((uStrCaseCmp(bogus,"true")==0)|| (uStrCaseCmp(bogus,"yes")==0)|| (uStrCaseCmp(bogus,"on")==0)) { val_rtrn->uval= 1; return True; } else if ((uStrCaseCmp(bogus,"false")==0)|| (uStrCaseCmp(bogus,"no")==0)|| (uStrCaseCmp(bogus,"off")==0)) { val_rtrn->uval= 0; return True; } } if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeBoolean,val_rtrn); } if (!ok) ERROR1("Identifier \"%s\" of type int is unknown\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); return ok; case ExprFieldRef: if (lookup) { ok= (*lookup)(lookupPriv, expr->value.field.element,expr->value.field.field, TypeBoolean,val_rtrn); } if (!ok) ERROR2("Default \"%s.%s\" of type boolean is unknown\n", XkbAtomText(NULL,expr->value.field.element,XkbMessage), XkbAtomText(NULL,expr->value.field.field,XkbMessage)); return ok; case OpInvert: case OpNot: ok= ExprResolveBoolean(expr,val_rtrn,lookup,lookupPriv); if (ok) val_rtrn->uval= !val_rtrn->uval; return ok; case OpAdd: if (bogus==NULL) bogus= "Addition"; case OpSubtract: if (bogus==NULL) bogus= "Subtraction"; case OpMultiply: if (bogus==NULL) bogus= "Multiplication"; case OpDivide: if (bogus==NULL) bogus= "Division"; case OpAssign: if (bogus==NULL) bogus= "Assignment"; case OpNegate: if (bogus==NULL) bogus= "Negation"; ERROR1("%s of boolean values not permitted\n",bogus); break; case OpUnaryPlus: ERROR("Unary \"+\" operator not permitted for boolean values\n"); break; default: WSGO1("Unknown operator %d in ResolveBoolean\n",expr->op); break; } return False; } int #if NeedFunctionPrototypes ExprResolveFloat( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveFloat(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; ExprResult leftRtrn,rightRtrn; ExprDef *left,*right; switch (expr->op) { case ExprValue: if (expr->type==TypeString) { register char *str; str= XkbAtomGetString(NULL,expr->value.str); if ((str!=None)&&(strlen(str)==1)) { val_rtrn->uval= str[0]*XkbGeomPtsPerMM; return True; } } if ((expr->type!=TypeInt)&&(expr->type!=TypeFloat)) { ERROR1("Found constant of type %s, expected a number\n", exprTypeText(expr->type)); return False; } val_rtrn->ival= expr->value.ival; if (expr->type==TypeInt) val_rtrn->ival*= XkbGeomPtsPerMM; return True; case ExprIdent: if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeFloat,val_rtrn); } if (!ok) ERROR1("Numeric identifier \"%s\" unknown\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); return ok; case ExprFieldRef: if (lookup) { ok= (*lookup)(lookupPriv, expr->value.field.element,expr->value.field.field, TypeFloat,val_rtrn); } if (!ok) ERROR2("Numeric default \"%s.%s\" unknown\n", XkbAtomText(NULL,expr->value.field.element,XkbMessage), XkbAtomText(NULL,expr->value.field.field,XkbMessage)); return ok; case OpAdd: case OpSubtract: case OpMultiply: case OpDivide: left= expr->value.binary.left; right= expr->value.binary.right; if (ExprResolveFloat(left,&leftRtrn,lookup,lookupPriv)&& ExprResolveFloat(right,&rightRtrn,lookup,lookupPriv)) { switch (expr->op) { case OpAdd: val_rtrn->ival= leftRtrn.ival+rightRtrn.ival; break; case OpSubtract: val_rtrn->ival= leftRtrn.ival-rightRtrn.ival; break; case OpMultiply: val_rtrn->ival= leftRtrn.ival*rightRtrn.ival; break; case OpDivide: val_rtrn->ival= leftRtrn.ival/rightRtrn.ival; break; } return True; } return False; case OpAssign: WSGO("Assignment operator not implemented yet\n"); break; case OpNot: left= expr->value.child; if (ExprResolveFloat(left,&leftRtrn,lookup,lookupPriv)) { ERROR("The ! operator cannot be applied to a number\n"); } return False; case OpInvert: case OpNegate: left= expr->value.child; if (ExprResolveFloat(left,&leftRtrn,lookup,lookupPriv)) { if (expr->op==OpNegate) val_rtrn->ival= -leftRtrn.ival; else val_rtrn->ival= ~leftRtrn.ival; return True; } return False; case OpUnaryPlus: left= expr->value.child; return ExprResolveFloat(left,val_rtrn,lookup,lookupPriv); default: WSGO1("Unknown operator %d in ResolveFloat\n",expr->op); break; } return False; } int #if NeedFunctionPrototypes ExprResolveInteger( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveInteger(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; ExprResult leftRtrn,rightRtrn; ExprDef *left,*right; switch (expr->op) { case ExprValue: if (expr->type==TypeString) { register char *str; str= XkbAtomGetString(NULL,expr->value.str); if ((str!=None)&&(strlen(str)==1)) { val_rtrn->uval= str[0]; return True; } } if ((expr->type!=TypeInt)&&(expr->type!=TypeFloat)) { ERROR1("Found constant of type %s where an int was expected\n", exprTypeText(expr->type)); return False; } val_rtrn->ival= expr->value.ival; if (expr->type==TypeFloat) val_rtrn->ival/= XkbGeomPtsPerMM; return True; case ExprIdent: if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeInt,val_rtrn); } if (!ok) ERROR1("Identifier \"%s\" of type int is unknown\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); return ok; case ExprFieldRef: if (lookup) { ok= (*lookup)(lookupPriv, expr->value.field.element,expr->value.field.field, TypeInt,val_rtrn); } if (!ok) ERROR2("Default \"%s.%s\" of type int is unknown\n", XkbAtomText(NULL,expr->value.field.element,XkbMessage), XkbAtomText(NULL,expr->value.field.field,XkbMessage)); return ok; case OpAdd: case OpSubtract: case OpMultiply: case OpDivide: left= expr->value.binary.left; right= expr->value.binary.right; if (ExprResolveInteger(left,&leftRtrn,lookup,lookupPriv)&& ExprResolveInteger(right,&rightRtrn,lookup,lookupPriv)) { switch (expr->op) { case OpAdd: val_rtrn->ival= leftRtrn.ival+rightRtrn.ival; break; case OpSubtract: val_rtrn->ival= leftRtrn.ival-rightRtrn.ival; break; case OpMultiply: val_rtrn->ival= leftRtrn.ival*rightRtrn.ival; break; case OpDivide: val_rtrn->ival= leftRtrn.ival/rightRtrn.ival; break; } return True; } return False; case OpAssign: WSGO("Assignment operator not implemented yet\n"); break; case OpNot: left= expr->value.child; if (ExprResolveInteger(left,&leftRtrn,lookup,lookupPriv)) { ERROR("The ! operator cannot be applied to an integer\n"); } return False; case OpInvert: case OpNegate: left= expr->value.child; if (ExprResolveInteger(left,&leftRtrn,lookup,lookupPriv)) { if (expr->op==OpNegate) val_rtrn->ival= -leftRtrn.ival; else val_rtrn->ival= ~leftRtrn.ival; return True; } return False; case OpUnaryPlus: left= expr->value.child; return ExprResolveInteger(left,val_rtrn,lookup,lookupPriv); default: WSGO1("Unknown operator %d in ResolveInteger\n",expr->op); break; } return False; } int #if NeedFunctionPrototypes ExprResolveString( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveString(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; ExprResult leftRtrn,rightRtrn; ExprDef * left; ExprDef * right; char * bogus= NULL; switch (expr->op) { case ExprValue: if (expr->type!=TypeString) { ERROR1("Found constant of type %s, expected a string\n", exprTypeText(expr->type)); return False; } val_rtrn->str= XkbAtomGetString(NULL,expr->value.str); if (val_rtrn->str==NULL) { static char *empty= ""; val_rtrn->str= empty; } return True; case ExprIdent: if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeString,val_rtrn); } if (!ok) ERROR1("Identifier \"%s\" of type string not found\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); return ok; case ExprFieldRef: if (lookup) { ok= (*lookup)(lookupPriv, expr->value.field.element,expr->value.field.field, TypeString,val_rtrn); } if (!ok) ERROR2("Default \"%s.%s\" of type string not found\n", XkbAtomText(NULL,expr->value.field.element,XkbMessage), XkbAtomText(NULL,expr->value.field.field,XkbMessage)); return ok; case OpAdd: left= expr->value.binary.left; right= expr->value.binary.right; if (ExprResolveString(left,&leftRtrn,lookup,lookupPriv)&& ExprResolveString(right,&rightRtrn,lookup,lookupPriv)) { int len; char *new; len= strlen(leftRtrn.str)+strlen(rightRtrn.str)+1; new= (char *)uAlloc(len); if (new) { sprintf(new,"%s%s",leftRtrn.str,rightRtrn.str); val_rtrn->str= new; return True; } } return False; case OpSubtract: if (bogus==NULL) bogus= "Subtraction"; case OpMultiply: if (bogus==NULL) bogus= "Multiplication"; case OpDivide: if (bogus==NULL) bogus= "Division"; case OpAssign: if (bogus==NULL) bogus= "Assignment"; case OpNegate: if (bogus==NULL) bogus= "Negation"; case OpInvert: if (bogus==NULL) bogus= "Bitwise complement"; ERROR1("%s of string values not permitted\n",bogus); return False; case OpNot: left= expr->value.child; if (ExprResolveString(left,&leftRtrn,lookup,lookupPriv)) { ERROR("The ! operator cannot be applied to a string\n"); } return False; case OpUnaryPlus: left= expr->value.child; if (ExprResolveString(left,&leftRtrn,lookup,lookupPriv)) { ERROR("The + operator cannot be applied to a string\n"); } return False; default: WSGO1("Unknown operator %d in ResolveString\n",expr->op); break; } return False; } int #if NeedFunctionPrototypes ExprResolveKeyName( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveKeyName(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; ExprDef * left; ExprResult leftRtrn; char * bogus= NULL; switch (expr->op) { case ExprValue: if (expr->type!=TypeKeyName) { ERROR1("Found constant of type %s, expected a key name\n", exprTypeText(expr->type)); return False; } memcpy(val_rtrn->keyName.name,expr->value.keyName,XkbKeyNameLength); return True; case ExprIdent: if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeString,val_rtrn); } if (!ok) ERROR1("Identifier \"%s\" of type string not found\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); return ok; case ExprFieldRef: if (lookup) { ok= (*lookup)(lookupPriv, expr->value.field.element,expr->value.field.field, TypeString,val_rtrn); } if (!ok) ERROR2("Default \"%s.%s\" of type key name not found\n", XkbAtomText(NULL,expr->value.field.element,XkbMessage), XkbAtomText(NULL,expr->value.field.field,XkbMessage)); return ok; case OpAdd: if (bogus==NULL) bogus= "Addition"; case OpSubtract: if (bogus==NULL) bogus= "Subtraction"; case OpMultiply: if (bogus==NULL) bogus= "Multiplication"; case OpDivide: if (bogus==NULL) bogus= "Division"; case OpAssign: if (bogus==NULL) bogus= "Assignment"; case OpNegate: if (bogus==NULL) bogus= "Negation"; case OpInvert: if (bogus==NULL) bogus= "Bitwise complement"; ERROR1("%s of key name values not permitted\n",bogus); return False; case OpNot: left= expr->value.binary.left; if (ExprResolveString(left,&leftRtrn,lookup,lookupPriv)) { ERROR("The ! operator cannot be applied to a key name\n"); } return False; case OpUnaryPlus: left= expr->value.binary.left; if (ExprResolveString(left,&leftRtrn,lookup,lookupPriv)) { ERROR("The + operator cannot be applied to a key name\n"); } return False; default: WSGO1("Unknown operator %d in ResolveKeyName\n",expr->op); break; } return False; } /***====================================================================***/ int #if NeedFunctionPrototypes ExprResolveEnum(ExprDef *expr,ExprResult *val_rtrn,LookupEntry *values) #else ExprResolveEnum(expr,val_rtrn,values) ExprDef * expr; ExprResult * val_rtrn; LookupEntry * values; #endif { if (expr->op!=ExprIdent) { ERROR1("Found a %s where an enumerated value was expected\n", exprOpText(expr->op)); return False; } if (!SimpleLookup((XPointer)values,(Atom)None,expr->value.str, (unsigned)TypeInt,val_rtrn)) { int nOut=0; ERROR1("Illegal identifier %s (expected one of: ", XkbAtomText(NULL,expr->value.str,XkbMessage)); while (values && values->name) { if (nOut!=0) INFO1(", %s",values->name); else INFO1("%s",values->name); } INFO(")\n"); return False; } return True; } int #if NeedFunctionPrototypes ExprResolveMask( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveMask(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; ExprResult leftRtrn,rightRtrn; ExprDef *left,*right; char * bogus= NULL; switch (expr->op) { case ExprValue: if (expr->type!=TypeInt) { ERROR1("Found constant of type %s where a mask was expected\n", exprTypeText(expr->type)); return False; } val_rtrn->ival= expr->value.ival; return True; case ExprIdent: if (lookup) { ok= (*lookup)(lookupPriv, None,expr->value.str, TypeInt,val_rtrn); } if (!ok) ERROR1("Identifier \"%s\" of type int is unknown\n", XkbAtomText(NULL,expr->value.str,XkbMessage)); return ok; case ExprFieldRef: if (lookup) { ok= (*lookup)(lookupPriv, expr->value.field.element,expr->value.field.field, TypeInt,val_rtrn); } if (!ok) ERROR2("Default \"%s.%s\" of type int is unknown\n", XkbAtomText(NULL,expr->value.field.element,XkbMessage), XkbAtomText(NULL,expr->value.field.field,XkbMessage)); return ok; case ExprArrayRef: bogus= "array reference"; case ExprActionDecl: if (bogus==NULL) bogus= "function use"; ERROR1("Unexpected %s in mask expression\n",bogus); ACTION("Expression ignored\n"); return False; case OpAdd: case OpSubtract: case OpMultiply: case OpDivide: left= expr->value.binary.left; right= expr->value.binary.right; if (ExprResolveMask(left,&leftRtrn,lookup,lookupPriv)&& ExprResolveMask(right,&rightRtrn,lookup,lookupPriv)) { switch (expr->op) { case OpAdd: val_rtrn->ival= leftRtrn.ival|rightRtrn.ival; break; case OpSubtract: val_rtrn->ival= leftRtrn.ival&(~rightRtrn.ival); break; case OpMultiply: case OpDivide: ERROR1("Cannot %s masks\n", expr->op==OpDivide?"divide":"multiply"); ACTION("Illegal operation ignored\n"); return False; } return True; } return False; case OpAssign: WSGO("Assignment operator not implemented yet\n"); break; case OpInvert: left= expr->value.child; if (ExprResolveInteger(left,&leftRtrn,lookup,lookupPriv)) { val_rtrn->ival= ~leftRtrn.ival; return True; } return False; case OpUnaryPlus: case OpNegate: case OpNot: left= expr->value.child; if (ExprResolveInteger(left,&leftRtrn,lookup,lookupPriv)) { ERROR1("The %s operator cannot be used with a mask\n", (expr->op==OpNegate?"-":"!")); } return False; default: WSGO1("Unknown operator %d in ResolveMask\n",expr->op); break; } return False; } int #if NeedFunctionPrototypes ExprResolveKeySym( ExprDef * expr, ExprResult * val_rtrn, IdentLookupFunc lookup, XPointer lookupPriv) #else ExprResolveKeySym(expr,val_rtrn,lookup,lookupPriv) ExprDef * expr; ExprResult * val_rtrn; IdentLookupFunc lookup; XPointer lookupPriv; #endif { int ok= 0; KeySym sym; if (expr->op==ExprIdent) { char *str; str= XkbAtomGetString(NULL,expr->value.str); if ((str!=NULL)&&((sym= XStringToKeysym(str))!=NoSymbol)) { val_rtrn->uval= sym; return True; } } ok= ExprResolveInteger(expr,val_rtrn,lookup,lookupPriv); if ((ok)&&(val_rtrn->uval<10)) val_rtrn->uval+= '0'; return ok; }