Edit
kc3-lang/libxkbcommon/src/xkbcomp/parseutils.c
Daniel Stone
- src/xkbcomp/parseutils.c
-
/************************************************************ 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 "parseutils.h" #include "xkbmisc.h" #include "xkbpath.h" #include "xkbparse.h" #include <X11/keysym.h> #include <X11/Xalloca.h> ParseCommon * AppendStmt(ParseCommon * to, ParseCommon * append) { ParseCommon *start = to; if (append == NULL) return to; while ((to != NULL) && (to->next != NULL)) { to = to->next; } if (to) { to->next = append; return start; } return append; } ExprDef * ExprCreate(unsigned op, unsigned type) { ExprDef *expr; expr = uTypedAlloc(ExprDef); if (expr) { expr->common.stmtType = StmtExpr; expr->common.next = NULL; expr->op = op; expr->type = type; } else { FATAL("Couldn't allocate expression in parser\n"); /* NOTREACHED */ } return expr; } ExprDef * ExprCreateUnary(unsigned op, unsigned type, ExprDef * child) { ExprDef *expr; expr = uTypedAlloc(ExprDef); if (expr) { expr->common.stmtType = StmtExpr; expr->common.next = NULL; expr->op = op; expr->type = type; expr->value.child = child; } else { FATAL("Couldn't allocate expression in parser\n"); /* NOTREACHED */ } return expr; } ExprDef * ExprCreateBinary(unsigned op, ExprDef * left, ExprDef * right) { ExprDef *expr; expr = uTypedAlloc(ExprDef); if (expr) { expr->common.stmtType = StmtExpr; expr->common.next = NULL; expr->op = op; if ((op == OpAssign) || (left->type == TypeUnknown)) expr->type = right->type; else if ((left->type == right->type) || (right->type == TypeUnknown)) expr->type = left->type; else expr->type = TypeUnknown; expr->value.binary.left = left; expr->value.binary.right = right; } else { FATAL("Couldn't allocate expression in parser\n"); /* NOTREACHED */ } return expr; } KeycodeDef * KeycodeCreate(char *name, unsigned long value) { KeycodeDef *def; def = uTypedAlloc(KeycodeDef); if (def) { def->common.stmtType = StmtKeycodeDef; def->common.next = NULL; strncpy(def->name, name, XkbKeyNameLength); def->name[XkbKeyNameLength] = '\0'; def->value = value; } else { FATAL("Couldn't allocate key name definition in parser\n"); /* NOTREACHED */ } return def; } KeyAliasDef * KeyAliasCreate(char *alias, char *real) { KeyAliasDef *def; def = uTypedAlloc(KeyAliasDef); if (def) { def->common.stmtType = StmtKeyAliasDef; def->common.next = NULL; strncpy(def->alias, alias, XkbKeyNameLength); def->alias[XkbKeyNameLength] = '\0'; strncpy(def->real, real, XkbKeyNameLength); def->real[XkbKeyNameLength] = '\0'; } else { FATAL("Couldn't allocate key alias definition in parser\n"); /* NOTREACHED */ } return def; } VModDef * VModCreate(xkb_atom_t name, ExprDef * value) { VModDef *def; def = uTypedAlloc(VModDef); if (def) { def->common.stmtType = StmtVModDef; def->common.next = NULL; def->name = name; def->value = value; } else { FATAL("Couldn't allocate variable definition in parser\n"); /* NOTREACHED */ } return def; } VarDef * VarCreate(ExprDef * name, ExprDef * value) { VarDef *def; def = uTypedAlloc(VarDef); if (def) { def->common.stmtType = StmtVarDef; def->common.next = NULL; def->name = name; def->value = value; } else { FATAL("Couldn't allocate variable definition in parser\n"); /* NOTREACHED */ } return def; } VarDef * BoolVarCreate(xkb_atom_t nameToken, unsigned set) { ExprDef *name, *value; name = ExprCreate(ExprIdent, TypeUnknown); name->value.str = nameToken; value = ExprCreate(ExprValue, TypeBoolean); value->value.uval = set; return VarCreate(name, value); } InterpDef * InterpCreate(char *sym, ExprDef * match) { InterpDef *def; def = uTypedAlloc(InterpDef); if (def) { def->common.stmtType = StmtInterpDef; def->common.next = NULL; def->sym = sym; def->match = match; } else { FATAL("Couldn't allocate interp definition in parser\n"); /* NOTREACHED */ } return def; } KeyTypeDef * KeyTypeCreate(xkb_atom_t name, VarDef * body) { KeyTypeDef *def; def = uTypedAlloc(KeyTypeDef); if (def) { def->common.stmtType = StmtKeyTypeDef; def->common.next = NULL; def->merge = MergeDefault; def->name = name; def->body = body; } else { FATAL("Couldn't allocate key type definition in parser\n"); /* NOTREACHED */ } return def; } SymbolsDef * SymbolsCreate(char *keyName, ExprDef * symbols) { SymbolsDef *def; def = uTypedAlloc(SymbolsDef); if (def) { def->common.stmtType = StmtSymbolsDef; def->common.next = NULL; def->merge = MergeDefault; memset(def->keyName, 0, 5); strncpy(def->keyName, keyName, 4); def->symbols = symbols; } else { FATAL("Couldn't allocate symbols definition in parser\n"); /* NOTREACHED */ } return def; } GroupCompatDef * GroupCompatCreate(int group, ExprDef * val) { GroupCompatDef *def; def = uTypedAlloc(GroupCompatDef); if (def) { def->common.stmtType = StmtGroupCompatDef; def->common.next = NULL; def->merge = MergeDefault; def->group = group; def->def = val; } else { FATAL("Couldn't allocate group compat definition in parser\n"); /* NOTREACHED */ } return def; } ModMapDef * ModMapCreate(uint32_t modifier, ExprDef * keys) { ModMapDef *def; def = uTypedAlloc(ModMapDef); if (def) { def->common.stmtType = StmtModMapDef; def->common.next = NULL; def->merge = MergeDefault; def->modifier = modifier; def->keys = keys; } else { FATAL("Couldn't allocate mod mask definition in parser\n"); /* NOTREACHED */ } return def; } IndicatorMapDef * IndicatorMapCreate(xkb_atom_t name, VarDef * body) { IndicatorMapDef *def; def = uTypedAlloc(IndicatorMapDef); if (def) { def->common.stmtType = StmtIndicatorMapDef; def->common.next = NULL; def->merge = MergeDefault; def->name = name; def->body = body; } else { FATAL("Couldn't allocate indicator map definition in parser\n"); /* NOTREACHED */ } return def; } IndicatorNameDef * IndicatorNameCreate(int ndx, ExprDef * name, Bool virtual) { IndicatorNameDef *def; def = uTypedAlloc(IndicatorNameDef); if (def) { def->common.stmtType = StmtIndicatorNameDef; def->common.next = NULL; def->merge = MergeDefault; def->ndx = ndx; def->name = name; def->virtual = virtual; } else { FATAL("Couldn't allocate indicator index definition in parser\n"); /* NOTREACHED */ } return def; } ExprDef * ActionCreate(xkb_atom_t name, ExprDef * args) { ExprDef *act; act = uTypedAlloc(ExprDef); if (act) { act->common.stmtType = StmtExpr; act->common.next = NULL; act->op = ExprActionDecl; act->value.action.name = name; act->value.action.args = args; return act; } FATAL("Couldn't allocate ActionDef in parser\n"); return NULL; } ExprDef * CreateKeysymList(char *sym) { ExprDef *def; def = ExprCreate(ExprKeysymList, TypeSymbols); if (def) { def->value.list.nSyms = 1; def->value.list.szSyms = 4; def->value.list.syms = uTypedCalloc(4, char *); if (def->value.list.syms != NULL) { def->value.list.syms[0] = sym; return def; } } FATAL("Couldn't allocate expression for keysym list in parser\n"); return NULL; } ExprDef * AppendKeysymList(ExprDef * list, char *sym) { if (list->value.list.nSyms >= list->value.list.szSyms) { list->value.list.szSyms *= 2; list->value.list.syms = uTypedRecalloc(list->value.list.syms, list->value.list.nSyms, list->value.list.szSyms, char *); if (list->value.list.syms == NULL) { FATAL("Couldn't resize list of symbols for append\n"); return NULL; } } list->value.list.syms[list->value.list.nSyms++] = sym; return list; } int LookupKeysym(char *str, xkb_keysym_t * sym_rtrn) { xkb_keysym_t sym; if ((!str) || (strcasecmp(str, "any") == 0) || (strcasecmp(str, "nosymbol") == 0)) { *sym_rtrn = XKB_KEYSYM_NO_SYMBOL; return 1; } else if ((strcasecmp(str, "none") == 0) || (strcasecmp(str, "voidsymbol") == 0)) { *sym_rtrn = XK_VoidSymbol; return 1; } sym = xkb_string_to_keysym(str); if (sym != XKB_KEYSYM_NO_SYMBOL) { *sym_rtrn = sym; return 1; } return 0; } static void FreeInclude(IncludeStmt *incl); IncludeStmt * IncludeCreate(char *str, unsigned merge) { IncludeStmt *incl, *first; char *file, *map, *stmt, *tmp, *extra_data; char nextop; Bool haveSelf; haveSelf = False; incl = first = NULL; file = map = NULL; tmp = str; stmt = uDupString(str); while ((tmp) && (*tmp)) { if (XkbParseIncludeMap(&tmp, &file, &map, &nextop, &extra_data)) { if ((file == NULL) && (map == NULL)) { if (haveSelf) goto BAIL; haveSelf = True; } if (first == NULL) first = incl = uTypedAlloc(IncludeStmt); else { incl->next = uTypedAlloc(IncludeStmt); incl = incl->next; } if (incl) { incl->common.stmtType = StmtInclude; incl->common.next = NULL; incl->merge = merge; incl->stmt = NULL; incl->file = file; incl->map = map; incl->modifier = extra_data; incl->path = NULL; incl->next = NULL; } else { WSGO("Allocation failure in IncludeCreate\n"); ACTION("Using only part of the include\n"); break; } if (nextop == '|') merge = MergeAugment; else merge = MergeOverride; } else { goto BAIL; } } if (first) first->stmt = stmt; else free(stmt); return first; BAIL: ERROR("Illegal include statement \"%s\"\n", stmt); ACTION("Ignored\n"); FreeInclude(first); free(stmt); return NULL; } #ifdef DEBUG void PrintStmtAddrs(ParseCommon * stmt) { fprintf(stderr, "0x%x", stmt); if (stmt) { do { fprintf(stderr, "->0x%x", stmt->next); stmt = stmt->next; } while (stmt); } fprintf(stderr, "\n"); } #endif void CheckDefaultMap(XkbFile * maps, const char *fileName) { XkbFile *dflt, *tmp; dflt = NULL; for (tmp = maps, dflt = NULL; tmp != NULL; tmp = (XkbFile *) tmp->common.next) { if (tmp->flags & XkbLC_Default) { if (dflt == NULL) dflt = tmp; else { if (warningLevel > 2) { WARN("Multiple default components in %s\n", (fileName ? fileName : "(unknown)")); ACTION("Using %s, ignoring %s\n", (dflt->name ? dflt->name : "(first)"), (tmp->name ? tmp->name : "(subsequent)")); } tmp->flags &= (~XkbLC_Default); } } } } XkbFile * CreateXKBFile(int type, char *name, ParseCommon * defs, unsigned flags) { XkbFile *file; static int fileID; file = uTypedAlloc(XkbFile); if (file) { XkbcEnsureSafeMapName(name); memset(file, 0, sizeof(XkbFile)); file->type = type; file->topName = uDupString(name); file->name = name; file->defs = defs; file->id = fileID++; file->compiled = False; file->flags = flags; } return file; } unsigned StmtSetMerge(ParseCommon * stmt, unsigned merge, YYLTYPE *loc, void *scanner) { if ((merge == MergeAltForm) && (stmt->stmtType != StmtKeycodeDef)) { yyerror(loc, scanner, "illegal use of 'alternate' merge mode"); merge = MergeDefault; } return merge; } static void FreeExpr(ExprDef *expr) { int i; if (!expr) return; switch (expr->op) { case ExprActionList: case OpNegate: case OpUnaryPlus: case OpNot: case OpInvert: FreeStmt(&expr->value.child->common); break; case OpDivide: case OpAdd: case OpSubtract: case OpMultiply: case OpAssign: FreeStmt(&expr->value.binary.left->common); FreeStmt(&expr->value.binary.right->common); break; case ExprActionDecl: FreeStmt(&expr->value.action.args->common); break; case ExprArrayRef: FreeStmt(&expr->value.array.entry->common); break; case ExprKeysymList: for (i = 0; i < expr->value.list.nSyms; i++) free(expr->value.list.syms[i]); free(expr->value.list.syms); break; default: break; } } static void FreeInclude(IncludeStmt *incl) { IncludeStmt *next; while (incl) { next = incl->next; free(incl->file); free(incl->map); free(incl->modifier); free(incl->path); free(incl->stmt); free(incl); incl = next; } } void FreeStmt(ParseCommon *stmt) { ParseCommon *next; YYSTYPE u; while (stmt) { next = stmt->next; u.any = stmt; switch (stmt->stmtType) { case StmtInclude: FreeInclude((IncludeStmt *)stmt); /* stmt is already free'd here. */ stmt = NULL; break; case StmtExpr: FreeExpr(u.expr); break; case StmtVarDef: FreeStmt(&u.var->name->common); FreeStmt(&u.var->value->common); break; case StmtKeyTypeDef: FreeStmt(&u.keyType->body->common); break; case StmtInterpDef: free(u.interp->sym); FreeStmt(&u.interp->match->common); FreeStmt(&u.interp->def->common); break; case StmtVModDef: FreeStmt(&u.vmod->value->common); break; case StmtSymbolsDef: FreeStmt(&u.syms->symbols->common); break; case StmtModMapDef: FreeStmt(&u.modMask->keys->common); break; case StmtGroupCompatDef: FreeStmt(&u.groupCompat->def->common); break; case StmtIndicatorMapDef: FreeStmt(&u.ledMap->body->common); break; case StmtIndicatorNameDef: FreeStmt(&u.ledName->name->common); break; default: break; } free(stmt); stmt = next; } } void FreeXKBFile(XkbFile *file) { XkbFile *next; while (file) { next = (XkbFile *)file->common.next; switch (file->type) { case XkmKeymapFile: case XkmSemanticsFile: case XkmLayoutFile: FreeXKBFile((XkbFile *)file->defs); break; case XkmTypesIndex: case XkmCompatMapIndex: case XkmSymbolsIndex: case XkmKeyNamesIndex: case XkmGeometryIndex: case XkmGeometryFile: FreeStmt(file->defs); break; } free(file->name); free(file->topName); free(file); file = next; } }