Mercurial > projects > ldc
view dmd2/identifier.c @ 1317:4099548c80e0
Allocate objects on the stack if they (a) don't have a destructor, and
(b) don't override the delete operator (on top of the regular conditions for
stack allocation that also apply to arrays, structs, etc.).
The "no destructor" clause is not strictly necessary, but calling them at the
right time would be tricky to say the least; it would involve, among other
things, "manually" inserting a try-finally block around anything that might
throw exceptions not caught in the current function.
Note: objects with custom new operators are automatically ignored because they
don't use the regular allocation runtime call, so there's no need to pay special
attention to them.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Sat, 09 May 2009 00:50:15 +0200 |
parents | f5d5bc9295b1 |
children | 638d16625da2 |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2006 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com // License for redistribution is by either the Artistic License // in artistic.txt, or the GNU General Public License in gnu.txt. // See the included readme.txt for details. #include <stdio.h> #include <string.h> #include "root.h" #include "identifier.h" #include "mars.h" #include "lexer.h" #include "id.h" Identifier::Identifier(const char *string, int value) { //printf("Identifier('%s', %d)\n", string, value); this->string = string; this->value = value; this->len = strlen(string); } hash_t Identifier::hashCode() { return String::calcHash(string); } int Identifier::equals(Object *o) { return this == o || memcmp(string,o->toChars(),len+1) == 0; } int Identifier::compare(Object *o) { return memcmp(string, o->toChars(), len + 1); } char *Identifier::toChars() { return (char *)string; } const char *Identifier::toHChars2() { const char *p = NULL; if (this == Id::ctor) p = "this"; else if (this == Id::dtor) p = "~this"; else if (this == Id::classInvariant) p = "invariant"; else if (this == Id::unitTest) p = "unittest"; else if (this == Id::dollar) p = "$"; else if (this == Id::withSym) p = "with"; else if (this == Id::result) p = "result"; else if (this == Id::returnLabel) p = "return"; else { p = toChars(); if (*p == '_') { if (memcmp(p, "_staticCtor", 11) == 0) p = "static this"; else if (memcmp(p, "_staticDtor", 11) == 0) p = "static ~this"; } } return p; } void Identifier::print() { fprintf(stdmsg, "%s",string); } int Identifier::dyncast() { return DYNCAST_IDENTIFIER; } Identifier *Identifier::generateId(const char *prefix) { static size_t i; return generateId(prefix, ++i); } Identifier *Identifier::generateId(const char *prefix, size_t i) { OutBuffer buf; buf.writestring(prefix); buf.printf("%"PRIuSIZE, i); char *id = buf.toChars(); buf.data = NULL; return Lexer::idPool(id); }