Mercurial > projects > ldc
view dmd/mars.c @ 1168:ab186e535e72
A different fix to #218 and DMD2682 that does not lead to constant folding regressions.
Fixes run/const_15, run/c/const_16_B.
The price is removing the lvalueness of struct literals. If it turns out too
much code depends on this behavior or we don't want to break with DMD, we
could keep struct literals as lvalues and instead convert struct literals used
as expression initializers into struct initializers.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Sun, 29 Mar 2009 11:43:45 +0200 |
parents | eeb8b95ea92e |
children | e961851fb8be |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2009 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 <stdlib.h> #include <ctype.h> #include <assert.h> #include <limits.h> #include <string> #include <cstdarg> #if __DMC__ #include <dos.h> #endif #if POSIX #include <errno.h> #elif _WIN32 #include <windows.h> #endif #include "rmem.h" #include "root.h" #include "mars.h" #include "module.h" #include "mtype.h" #include "id.h" #include "cond.h" #include "expression.h" #include "lexer.h" #include "gen/revisions.h" Global global; Global::Global() { mars_ext = "d"; sym_ext = "d"; hdr_ext = "di"; doc_ext = "html"; ddoc_ext = "ddoc"; // LDC ll_ext = "ll"; bc_ext = "bc"; s_ext = "s"; obj_ext = "o"; #if _WIN32 obj_ext_alt = "obj"; #endif copyright = "Copyright (c) 1999-2009 by Digital Mars and Tomas Lindquist Olsen"; written = "written by Walter Bright and Tomas Lindquist Olsen"; version = "v1.041"; ldc_version = LDC_REV; llvm_version = LLVM_REV_STR; global.structalign = 8; // This should only be used as a global, so the other fields are // automatically initialized to zero when the program is loaded. // In particular, DO NOT zero-initialize .params here (like DMD // does) because command-line options initialize some of those // fields to non-zero defaults, and do so from constructors that // may run before this one. } char *Loc::toChars() const { OutBuffer buf; if (filename) { buf.printf("%s", filename); } if (linnum) buf.printf("(%d)", linnum); buf.writeByte(0); return (char *)buf.extractData(); } Loc::Loc(Module *mod, unsigned linnum) { this->linnum = linnum; this->filename = mod ? mod->srcfile->toChars() : NULL; } /************************************** * Print error message and exit. */ void error(Loc loc, const char *format, ...) { va_list ap; va_start(ap, format); verror(loc, format, ap); va_end( ap ); } void warning(Loc loc, const char *format, ...) { if (global.params.warnings && !global.gag) { va_list ap; va_start(ap, format); vwarning(loc, format, ap); va_end( ap ); } } void verror(Loc loc, const char *format, va_list ap) { if (!global.gag) { char *p = loc.toChars(); if (*p) fprintf(stdmsg, "%s: ", p); mem.free(p); fprintf(stdmsg, "Error: "); vfprintf(stdmsg, format, ap); fprintf(stdmsg, "\n"); fflush(stdmsg); } global.errors++; } void vwarning(Loc loc, const char *format, va_list ap) { if (global.params.warnings && !global.gag) { char *p = loc.toChars(); if (*p) fprintf(stdmsg, "%s: ", p); mem.free(p); fprintf(stdmsg, "Warning: "); vfprintf(stdmsg, format, ap); fprintf(stdmsg, "\n"); fflush(stdmsg); } } /*************************************** * Call this after printing out fatal error messages to clean up and exit * the compiler. */ void fatal() { #if 0 halt(); #endif exit(EXIT_FAILURE); } /************************************** * Try to stop forgetting to remove the breakpoints from * release builds. */ void halt() { #ifdef DEBUG *(char*)0=0; #endif } /*********************************** * Parse and append contents of environment variable envvar * to argc and argv[]. * The string is separated into arguments, processing \ and ". */ void getenv_setargv(const char *envvar, int *pargc, char** *pargv) { char *env; char *p; Array *argv; int argc; int wildcard; // do wildcard expansion int instring; int slash; char c; int j; env = getenv(envvar); if (!env) return; env = mem.strdup(env); // create our own writable copy argc = *pargc; argv = new Array(); argv->setDim(argc); int argc_left = 0; for (int i = 0; i < argc; i++) { if (!strcmp((*pargv)[i], "-run") || !strcmp((*pargv)[i], "--run")) { // HACK: set flag to indicate we saw '-run' here global.params.run = true; // Don't eat -run yet so the program arguments don't get changed argc_left = argc - i; argc = i; *pargv = &(*pargv)[i]; argv->setDim(i); break; } else { argv->data[i] = (void *)(*pargv)[i]; } } // HACK to stop required values from command line being drawn from DFLAGS argv->push((char*)""); argc++; j = 1; // leave argv[0] alone while (1) { wildcard = 1; switch (*env) { case ' ': case '\t': env++; break; case 0: goto Ldone; case '"': wildcard = 0; default: argv->push(env); // append //argv->insert(j, env); // insert at position j j++; argc++; p = env; slash = 0; instring = 0; c = 0; while (1) { c = *env++; switch (c) { case '"': p -= (slash >> 1); if (slash & 1) { p--; goto Laddc; } instring ^= 1; slash = 0; continue; case ' ': case '\t': if (instring) goto Laddc; *p = 0; //if (wildcard) //wildcardexpand(); // not implemented break; case '\\': slash++; *p++ = c; continue; case 0: *p = 0; //if (wildcard) //wildcardexpand(); // not implemented goto Ldone; default: Laddc: slash = 0; *p++ = c; continue; } break; } } } Ldone: assert(argc == argv->dim); argv->reserve(argc_left); for (int i = 0; i < argc_left; i++) argv->data[argc++] = (void *)(*pargv)[i]; *pargc = argc; *pargv = (char **)argv->data; }