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https://github.com/xomboverlord/ldc.git
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366 lines
8.6 KiB
C
366 lines
8.6 KiB
C
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// Compiler implementation of the D programming language
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// Copyright (c) 1999-2012 by Digital Mars
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// All Rights Reserved
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// written by Walter Bright
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// http://www.digitalmars.com
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// License for redistribution is by either the Artistic License
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// in artistic.txt, or the GNU General Public License in gnu.txt.
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// See the included readme.txt for details.
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#include <stdio.h>
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#include <assert.h>
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#include <string.h> // strcmp()
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#include "id.h"
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#include "init.h"
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#include "declaration.h"
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#include "identifier.h"
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#include "expression.h"
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#include "cond.h"
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#include "module.h"
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#include "template.h"
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#include "lexer.h"
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#include "mtype.h"
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#include "scope.h"
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#include "arraytypes.h"
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int findCondition(Strings *ids, Identifier *ident)
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{
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if (ids)
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{
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for (size_t i = 0; i < ids->dim; i++)
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{
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const char *id = (*ids)[i];
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if (strcmp(id, ident->toChars()) == 0)
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return TRUE;
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}
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}
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return FALSE;
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}
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/* ============================================================ */
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Condition::Condition(Loc loc)
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{
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this->loc = loc;
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inc = 0;
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}
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/* ============================================================ */
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DVCondition::DVCondition(Module *mod, unsigned level, Identifier *ident)
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: Condition(Loc())
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{
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this->mod = mod;
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this->level = level;
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this->ident = ident;
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}
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Condition *DVCondition::syntaxCopy()
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{
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return this; // don't need to copy
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}
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/* ============================================================ */
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void DebugCondition::setGlobalLevel(unsigned level)
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{
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global.params.debuglevel = level;
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}
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void DebugCondition::addGlobalIdent(const char *ident)
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{
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if (!global.params.debugids)
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global.params.debugids = new Strings();
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global.params.debugids->push((char *)ident);
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}
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DebugCondition::DebugCondition(Module *mod, unsigned level, Identifier *ident)
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: DVCondition(mod, level, ident)
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{
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}
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int DebugCondition::include(Scope *sc, ScopeDsymbol *s)
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{
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//printf("DebugCondition::include() level = %d, debuglevel = %d\n", level, global.params.debuglevel);
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if (inc == 0)
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{
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inc = 2;
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if (ident)
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{
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if (findCondition(mod->debugids, ident))
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inc = 1;
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else if (findCondition(global.params.debugids, ident))
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inc = 1;
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else
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{ if (!mod->debugidsNot)
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mod->debugidsNot = new Strings();
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mod->debugidsNot->push(ident->toChars());
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}
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}
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else if (level <= global.params.debuglevel || level <= mod->debuglevel)
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inc = 1;
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}
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return (inc == 1);
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}
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void DebugCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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{
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if (ident)
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buf->printf("debug (%s)", ident->toChars());
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else
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buf->printf("debug (%u)", level);
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}
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/* ============================================================ */
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void VersionCondition::setGlobalLevel(unsigned level)
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{
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global.params.versionlevel = level;
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}
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void VersionCondition::checkPredefined(Loc loc, const char *ident)
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{
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static const char* reserved[] =
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{
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"DigitalMars",
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"GNU",
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"LDC",
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"SDC",
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"Windows",
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"Win32",
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"Win64",
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"linux",
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"OSX",
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"FreeBSD",
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"OpenBSD",
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"NetBSD",
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"DragonFlyBSD",
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"BSD",
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"Solaris",
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"Posix",
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"AIX",
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"Haiku",
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"SkyOS",
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"SysV3",
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"SysV4",
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"Hurd",
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"Android",
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"Cygwin",
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"MinGW",
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"X86",
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"X86_64",
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"ARM",
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"ARM_Thumb",
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"ARM_SoftFloat",
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"ARM_SoftFP",
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"ARM_HardFloat",
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"AArch64",
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"PPC",
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"PPC_SoftFloat",
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"PPC_HardFloat",
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"PPC64",
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"IA64",
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"MIPS32",
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"MIPS64",
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"MIPS_O32",
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"MIPS_N32",
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"MIPS_O64",
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"MIPS_N64",
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"MIPS_EABI",
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"MIPS_SoftFloat",
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"MIPS_HardFloat",
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"SPARC",
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"SPARC_V8Plus",
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"SPARC_SoftFloat",
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"SPARC_HardFloat",
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"SPARC64",
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"S390",
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"S390X",
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"HPPA",
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"HPPA64",
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"SH",
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"SH64",
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"Alpha",
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"Alpha_SoftFloat",
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"Alpha_HardFloat",
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"LittleEndian",
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"BigEndian",
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"D_Coverage",
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"D_Ddoc",
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"D_InlineAsm_X86",
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"D_InlineAsm_X86_64",
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"D_LP64",
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"D_X32",
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"D_HardFloat",
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"D_SoftFloat",
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"D_PIC",
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"D_SIMD",
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"D_Version2",
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"D_NoBoundsChecks",
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"unittest",
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"assert",
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"all",
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"none",
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#if IN_LLVM
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"LLVM", "LDC", "LLVM64",
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"PPC", "PPC64",
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"darwin","solaris","freebsd"
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#endif
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};
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for (unsigned i = 0; i < sizeof(reserved) / sizeof(reserved[0]); i++)
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{
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if (strcmp(ident, reserved[i]) == 0)
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goto Lerror;
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}
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if (ident[0] == 'D' && ident[1] == '_')
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goto Lerror;
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return;
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Lerror:
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error(loc, "version identifier '%s' is reserved and cannot be set", ident);
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}
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void VersionCondition::addGlobalIdent(const char *ident)
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{
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checkPredefined(Loc(), ident);
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addPredefinedGlobalIdent(ident);
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}
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void VersionCondition::addPredefinedGlobalIdent(const char *ident)
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{
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if (!global.params.versionids)
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global.params.versionids = new Strings();
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global.params.versionids->push((char *)ident);
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}
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VersionCondition::VersionCondition(Module *mod, unsigned level, Identifier *ident)
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: DVCondition(mod, level, ident)
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{
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}
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int VersionCondition::include(Scope *sc, ScopeDsymbol *s)
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{
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//printf("VersionCondition::include() level = %d, versionlevel = %d\n", level, global.params.versionlevel);
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//if (ident) printf("\tident = '%s'\n", ident->toChars());
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if (inc == 0)
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{
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inc = 2;
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if (ident)
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{
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if (findCondition(mod->versionids, ident))
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inc = 1;
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else if (findCondition(global.params.versionids, ident))
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inc = 1;
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else
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{
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if (!mod->versionidsNot)
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mod->versionidsNot = new Strings();
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mod->versionidsNot->push(ident->toChars());
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}
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}
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else if (level <= global.params.versionlevel || level <= mod->versionlevel)
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inc = 1;
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}
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return (inc == 1);
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}
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void VersionCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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{
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if (ident)
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buf->printf("version (%s)", ident->toChars());
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else
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buf->printf("version (%u)", level);
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}
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/**************************** StaticIfCondition *******************************/
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StaticIfCondition::StaticIfCondition(Loc loc, Expression *exp)
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: Condition(loc)
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{
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this->exp = exp;
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this->nest = 0;
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}
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Condition *StaticIfCondition::syntaxCopy()
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{
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return new StaticIfCondition(loc, exp->syntaxCopy());
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}
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int StaticIfCondition::include(Scope *sc, ScopeDsymbol *s)
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{
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#if 0
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printf("StaticIfCondition::include(sc = %p, s = %p) this=%p inc = %d\n", sc, s, this, inc);
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if (s)
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{
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printf("\ts = '%s', kind = %s\n", s->toChars(), s->kind());
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}
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#endif
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if (inc == 0)
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{
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if (exp->op == TOKerror || nest > 100)
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{
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error(loc, (nest > 1000) ? "unresolvable circular static if expression"
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: "error evaluating static if expression");
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if (!global.gag)
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inc = 2; // so we don't see the error message again
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return 0;
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}
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if (!sc)
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{
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error(loc, "static if conditional cannot be at global scope");
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inc = 2;
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return 0;
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}
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++nest;
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sc = sc->push(sc->scopesym);
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sc->sd = s; // s gets any addMember()
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sc->flags |= SCOPEstaticif;
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Expression *e = exp->ctfeSemantic(sc);
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e = resolveProperties(sc, e);
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sc->pop();
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if (!e->type->checkBoolean())
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{
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if (e->type->toBasetype() != Type::terror)
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exp->error("expression %s of type %s does not have a boolean value", exp->toChars(), e->type->toChars());
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inc = 0;
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return 0;
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}
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e = e->ctfeInterpret();
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--nest;
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if (e->op == TOKerror)
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{ exp = e;
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inc = 0;
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}
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else if (e->isBool(TRUE))
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inc = 1;
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else if (e->isBool(FALSE))
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inc = 2;
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else
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{
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e->error("expression %s is not constant or does not evaluate to a bool", e->toChars());
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inc = 2;
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}
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}
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return (inc == 1);
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}
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void StaticIfCondition::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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{
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buf->writestring("static if (");
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exp->toCBuffer(buf, hgs);
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buf->writeByte(')');
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}
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