// $Id: system.cpp,v 1.6 1999/02/12 14:39:13 shields Exp $
copyright notice
#include "config.h"
#include <sys/stat.h>
#include "control.h"
#include "semantic.h"
#include "zip.h"
int Control::ConvertUnicodeToUtf8(wchar_t *source, char *target)
{
int length = 0;
for (; *source; source++)
{
int ch = *source;
if (ch == 0)
{
target[length++] = (char) 0xC0;
target[length++] = (char) 0x80;
}
else if (ch <= 0x007F)
target[length++] = (char) ch;
else if (ch <= 0x07FF)
{
target[length++] = (char) ((char) 0xC0 | (char) ((ch >> 6) & 0x001F)); // bits 6-10
target[length++] = (char) ((char) 0x80 | (char) (ch & 0x003F)); // bits 0-5
}
else
{
target[length++] = (char) ((char) 0xE0 | (char) ((ch >> 12) & 0x000F));
target[length++] = (char) ((char) 0x80 | (char) ((ch >> 6) & 0x003F));
target[length++] = (char) ((char) 0x80 | (char) (ch & 0x3F));
}
}
target[length] = U_NULL;
return length;
}
void Control::FindPathsToDirectory(PackageSymbol *package)
{
if (package -> directory.Length() == 0)
{
PackageSymbol *owner_package = package -> owner;
if (owner_package) // package is a subpackage?
{
for (int i = 0; i < owner_package -> directory.Length(); i++)
{
DirectorySymbol *owner_directory_symbol = owner_package -> directory[i],
*subdirectory_symbol = owner_directory_symbol -> FindDirectorySymbol(package -> Identity());
if ((! subdirectory_symbol) && (! owner_directory_symbol -> IsZip()))
{
int length = owner_directory_symbol -> DirectoryNameLength() + package -> Utf8NameLength() + 1; // +1 for '/'
char *directory_name = new char[length + 1]; // +1 for '\0';
strcpy(directory_name, owner_directory_symbol -> DirectoryName());
if (owner_directory_symbol -> DirectoryName()[owner_directory_symbol -> DirectoryNameLength() - 1] != U_SLASH)
strcat(directory_name, StringConstant::U8S__SL_);
strcat(directory_name, package -> Utf8Name());
if (::SystemIsDirectory(directory_name))
subdirectory_symbol = owner_directory_symbol -> InsertAndReadDirectorySymbol(package -> Identity());
delete [] directory_name;
}
if (subdirectory_symbol)
package -> directory.Next() = subdirectory_symbol;
}
}
else
{
//
// Recall that since classpath[0] contains the default directory, we always
// start searching at location 1.
//
for (int k = 1; k < classpath.Length(); k++)
{
PathSymbol *path_symbol = classpath[k];
DirectorySymbol *directory_symbol = path_symbol -> RootDirectory() -> FindDirectorySymbol(package -> Identity());
if ((! directory_symbol) && (! path_symbol -> IsZip()))
{
int length = path_symbol -> Utf8NameLength() + package -> Utf8NameLength() + 1; // +1 for '/'
char *directory_name = new char[length + 1]; // +1 for '/' +1 for '\0'
strcpy(directory_name, path_symbol -> Utf8Name());
strcat(directory_name, StringConstant::U8S__SL_);
strcat(directory_name, package -> Utf8Name());
if (::SystemIsDirectory(directory_name))
directory_symbol = path_symbol -> RootDirectory() -> InsertAndReadDirectorySymbol(package -> Identity());
delete [] directory_name;
}
if (directory_symbol)
package -> directory.Next() = directory_symbol;
}
}
}
return;
}
void Control::ProcessGlobalNameSymbols()
{Initialize top level variables in the Control class,
adding a set of names to the global NameLookupTable
dot_name_symbol '.' is the "current directory"
this -> dot_name_symbol = FindOrInsertName(US__DO_, wcslen(US__DO_));
dot_dot_name_symbol '..' is the parent directory
this -> dot_dot_name_symbol = FindOrInsertName(US__DO__DO_, wcslen(US__DO__DO_));
length_name_symbol 'length' is the builtin array length method
this -> length_name_symbol = FindOrInsertName(US_length, wcslen(US_length));
init_name_symbol '<init>' is the class constructor's internal name
this -> init_name_symbol = FindOrInsertName(US__LT_init_GT_, wcslen(US__LT_init_GT_));
clinit_name_symbol '<clinit>' is the class static initializer name
this -> clinit_name_symbol = FindOrInsertName(US__LT_clinit_GT_, wcslen(US__LT_clinit_GT_));
block_init_name_symbol 'block$' is the block initializer name
this -> block_init_name_symbol = FindOrInsertName(US_block_DOLLAR, wcslen(US_block_DOLLAR));
this0_name_symbol 'this$0' is the 'this' name in inner classes
this -> this0_name_symbol = FindOrInsertName(US_this0, wcslen(US_this0));
clone_name_symbol 'clone' is the array clone symbol
this -> clone_name_symbol = FindOrInsertName(US_clone, wcslen(US_clone));
object_name_symbol 'Object' is the name of the root of the class hierarchy
this -> object_name_symbol = FindOrInsertName(US_Object, wcslen(US_Object));
type_name_symbol 'TYPE' appears to be associated with non-primitive type casts
this -> type_name_symbol = FindOrInsertName(US_TYPE, wcslen(US_TYPE));
class_name_symbol 'class$' is not used
this -> class_name_symbol = FindOrInsertName(US__class_DOLLAR, wcslen(US__class_DOLLAR));
return;
}
//
// Create the unnamed package and set up global names.
//
void Control::ProcessUnnamedPackage()
{unnamed_package is the symbol "" (a null string).
unnamed_package = external_table.InsertPackageSymbol(FindOrInsertName(US_EMPTY, wcslen(US_EMPTY)), NULL);
//
// Create an entry for no_type. no_type is used primarily to signal an errorus_
//
no_type = unnamed_package -> InsertSystemTypeSymbol(FindOrInsertName(US__QU__QU_, wcslen(US__QU__QU_)));
no_type -> SetSignature(Utf8_pool.FindOrInsert(U8S__DO_, strlen(U8S__DO_))); // give it some signature...
no_type -> outermost_type = no_type;
no_type -> SetOwner(unnamed_package);
no_type -> MarkBad();
//
// Create an entry for the null type.
//
null_type = unnamed_package -> InsertSystemTypeSymbol(FindOrInsertName(US_null, wcslen(US_null)));
null_type -> outermost_type = null_type;
null_type -> SetOwner(unnamed_package);
null_type -> SetACC_PUBLIC();
return;
}
void Control::ProcessPath()
{
NameSymbol *dot_path_name_symbol;
#ifdef UNIX_FILE_SYSTEM
dot_path_name_symbol = dot_name_symbol;
#elif defined(WIN32_FILE_SYSTEM)
char *main_current_directory = option.GetMainCurrentDirectory();
int dot_path_name_length = strlen(main_current_directory);
wchar_t *dot_path_name = new wchar_t[dot_path_name_length + 1];
for (int i = 0; i < dot_path_name_length; i++)
dot_path_name[i] = main_current_directory[i];
dot_path_name[dot_path_name_length] = U_NULL;
dot_path_name_symbol = FindOrInsertName(dot_path_name, dot_path_name_length);
delete [] dot_path_name;
#endif
//
// We need a place to start. Allocate a "." directory with no owner initially. (Hence, the null argument.)
// Allocate a "." path whose associated directory is the "." directory.
// Identify the "." path as the owner of the "." directory.
//
DirectorySymbol *dot_directory = new DirectorySymbol(dot_name_symbol, NULL);
classpath.Next() = classpath_table.InsertPathSymbol(dot_path_name_symbol, dot_directory);
dot_directory -> ResetDirectory(); // Note that main_root_directory is reset after it has been assigned an owner above
root_directories.Next() = dot_directory;
//
//
//
if (option.classpath)
{
int max_path_name_length = strlen(option.classpath) + 1; // The longest possible path name we can encounter
wchar_t *path_name = new wchar_t[max_path_name_length + 1]; // +1 for '\0'
wchar_t *input_name = NULL;
char *full_directory_name = NULL;
for (char *path = option.classpath, *path_tail = &path[strlen(path)]; path < path_tail; path++)
{
#ifdef WIN32_FILE_SYSTEM
delete [] full_directory_name;
delete [] input_name;
#endif
char *head;
for (head = path; path < path_tail && *path != ::PathSeparator(); path++)
;
*path = U_NULL; // If a seperator was encountered, replace it by \0 to terminate the string.
int input_name_length = path - head;
int path_name_length = input_name_length;
for (int i = 0; i < path_name_length; i++)
path_name[i] = head[i];
path_name[path_name_length] = U_NULL;
#ifdef UNIX_FILE_SYSTEM
input_name = path_name;
#elif defined(WIN32_FILE_SYSTEM)
input_name = NULL;
full_directory_name = NULL;
char disk = (input_name_length >= 2 && Case::IsAsciiAlpha(head[0]) && head[1] == U_COLON ? head[0] : 0);
//
// Look for the directory. If it is found, update input_name and head.
//
option.SaveCurrentDirectoryOnDisk(disk);
if (SetCurrentDirectory(head))
{
char tmp[1];
DWORD directory_length = GetCurrentDirectory(0, tmp); // first, get the right size
full_directory_name = new char[directory_length + 1]; // allocate the directory
DWORD length = GetCurrentDirectory(directory_length, full_directory_name);
if (length <= directory_length)
{
for (char *ptr = full_directory_name; *ptr; ptr++)
*ptr = (*ptr != U_BACKSLASH ? *ptr : (char) U_SLASH); // turn '\' to '/'.
input_name_length = length;
input_name = new wchar_t[input_name_length + 1];
for (int k = 0; k < input_name_length; k++)
input_name[k] = full_directory_name[k];
input_name[input_name_length] = U_NULL;
head = full_directory_name;
}
}
//
// Default input_name, in case we do not succeed in finding the directory
//
if (! input_name)
{
input_name = new wchar_t[input_name_length + 1];
for (int j = 0; j < input_name_length; j++)
input_name[j] = path_name[j];
input_name[input_name_length] = U_NULL;
}
option.ResetCurrentDirectoryOnDisk(disk); // reset the current directory on disk
option.SetMainCurrentDirectory(); // reset the real current directory...
#endif
//
//
//
if (input_name_length > 0)
{
NameSymbol *name_symbol = FindOrInsertName(path_name, path_name_length);
//
// If a directory is specified more than once, ignore the duplicates.
//
PathSymbol *path_symbol = classpath_table.FindPathSymbol(name_symbol);
if (path_symbol)
{
if (name_symbol == dot_name_symbol)
{
dot_classpath_index = classpath.Length(); // The next index
classpath.Next() = classpath[0]; // share the "." directory
unnamed_package -> directory.Next() = classpath[0] -> RootDirectory();
}
continue;
}
//
// Check whether or not the path points to a system directory or a zip file
//
Zip *zipinfo = (::SystemIsDirectory(head) ? (Zip *) NULL : new Zip(*this, head));
//
// If we have an invalid zip file issue an error and continue...
//
DirectorySymbol *dot_directory;
if (zipinfo)
{
if (! zipinfo -> IsValid())
{
wchar_t *name = new wchar_t[input_name_length + 1];
for (int i = 0; i < input_name_length; i++)
name[i] = input_name[i];
name[input_name_length] = U_NULL;
bad_zip_filenames.Next() = name;
delete zipinfo;
continue;
}
dot_directory = new DirectorySymbol(dot_name_symbol, NULL);
root_directories.Next() = dot_directory;
}
else dot_directory = ProcessSubdirectories(input_name, input_name_length);
//
// Create the new path symbol and update the class path with it.
//
path_symbol = classpath_table.InsertPathSymbol(name_symbol, dot_directory);
classpath.Next() = path_symbol;
//
// If the path symbol is associated with a zip file, read the zip directory.
//
if (zipinfo)
{
path_symbol -> zipfile = zipinfo;
zipinfo -> ReadDirectory(dot_directory);
}
unnamed_package -> directory.Next() = dot_directory;
}
}
#ifdef WIN32_FILE_SYSTEM
delete [] full_directory_name;
delete [] input_name;
#endif
delete [] path_name;
}
//
// TODO: If the user did not specify "." in the class path we assume it.
// javac makes that assumption also. Is that correct?
//
if (dot_classpath_index == 0)
unnamed_package -> directory.Next() = classpath[0] -> RootDirectory();
return;
}
TypeSymbol *Control::GetPrimitiveType(wchar_t *name, char *signature)
{
NameSymbol *name_symbol = FindOrInsertName(name, wcslen(name));
TypeSymbol *type = unnamed_package -> InsertSystemTypeSymbol(name_symbol);
type -> SetSignature(Utf8_pool.FindOrInsert(signature, strlen(signature)));
type -> outermost_type = type;
type -> SetOwner(unnamed_package);
type -> SetACC_PUBLIC();
type -> MarkPrimitive();
return type;
}
void Control::ProcessSystemInformation()
{
//
// Add entry for system package
//
system_package = ProcessPackage(StringConstant::US_java_SL_lang);
//
// Create an entry for each primitive type. Note that the type void is treated as a primitive.
//
void_type = GetPrimitiveType(US_void, U8S_V);
boolean_type = GetPrimitiveType(US_boolean, U8S_Z);
byte_type = GetPrimitiveType(US_byte, U8S_B);
char_type = GetPrimitiveType(US_char, U8S_C);
short_type = GetPrimitiveType(US_short, U8S_S);
int_type = GetPrimitiveType(US_int, U8S_I);
long_type = GetPrimitiveType(US_long, U8S_J);
float_type = GetPrimitiveType(US_float, U8S_F);
double_type = GetPrimitiveType(US_double, U8S_D);
return;
}
DirectorySymbol *Control::GetOutputDirectory(FileSymbol *file_symbol)
{
DirectorySymbol *directory_symbol;
Control &control = file_symbol -> semantic -> control;
if (control.option.directory == NULL)
directory_symbol = file_symbol -> directory_symbol;
else
{
char *directory_prefix = control.option.directory;
int directory_prefix_length = strlen(directory_prefix),
utf8_name_length = file_symbol -> package -> PackageNameLength() * 3,
estimated_length = directory_prefix_length + utf8_name_length + 1; // +1 for slash
char *directory_name = new char[estimated_length + 1]; // +1 for '\0'
strcpy(directory_name, directory_prefix);
if (file_symbol -> package != control.unnamed_package) // if there was a package declaration, then...
{
strcat(directory_name, StringConstant::U8S__SL_);
char *utf8_name = new char[utf8_name_length + 1];
(void) ConvertUnicodeToUtf8(file_symbol -> package -> PackageName(), utf8_name);
strcat(directory_name, utf8_name);
delete [] utf8_name;
if (! ::SystemIsDirectory(directory_name)) // The directory does not yet exist.
{
for (char *ptr = &directory_name[directory_prefix_length + 1]; *ptr; ptr++)
{
if (*ptr == U_SLASH) // all the slashes in a package_name are forward slashes
{
*ptr = U_NULL;
if (! ::SystemIsDirectory(directory_name))
::SystemMkdir(directory_name);
*ptr = U_SLASH; // restore slash
}
}
::SystemMkdir(directory_name);
}
}
//
// Read the directory and insert the directory symbol. Note that since
// the original length computation was an estimate, we compute the real
// length here.
//
int length = strlen(directory_name);
wchar_t *name = new wchar_t[length + 1];
for (int i = 0; i < length; i++)
name[i] = directory_name[i];
name[length] = U_NULL;
directory_symbol = control.ProcessSubdirectories(name, length);
delete [] directory_name;
}
return directory_symbol;
}
FileSymbol *Control::GetJavaFile(PackageSymbol *package, NameSymbol *name_symbol)
{
FileSymbol *file_symbol = NULL;
//
//
//
int length = name_symbol -> Utf8NameLength() + FileSymbol::java_suffix_length;
char *full_filename = new char[length + 1]; // +1 for \0
strcpy(full_filename, name_symbol -> Utf8Name());
strcat(full_filename, FileSymbol::java_suffix);
DirectoryEntry *entry = NULL;
DirectorySymbol *directory_symbol = NULL;
for (int k = 0; k < package -> directory.Length(); k++)
{
directory_symbol = package -> directory[k];
if (entry = directory_symbol -> FindEntry(full_filename, length))
break;
}
if (entry)
{
PathSymbol *path_symbol = directory_symbol -> PathSym();
file_symbol = directory_symbol -> FindFileSymbol(name_symbol);
if (! ((file_symbol && file_symbol -> IsJava()) || path_symbol -> IsZip()))
{
file_symbol = directory_symbol -> InsertFileSymbol(name_symbol);
file_symbol -> directory_symbol = directory_symbol;
file_symbol -> SetJava();
file_symbol -> mtime = entry -> Mtime();
}
}
delete [] full_filename;
return file_symbol;
}
FileSymbol *Control::GetFile(PackageSymbol *package, NameSymbol *name_symbol, bool depend)
{
FileSymbol *file_symbol = NULL;
//
// calculate a length that is large enough...
//
int class_length = name_symbol -> Utf8NameLength() + FileSymbol::class_suffix_length,
java_length = name_symbol -> Utf8NameLength() + FileSymbol::java_suffix_length;
char *class_name = new char[class_length + 1]; // +1 for \0
strcpy(class_name, name_symbol -> Utf8Name());
strcat(class_name, FileSymbol::class_suffix);
char *java_name = new char[java_length + 1]; // +1 for \0
strcpy(java_name, name_symbol -> Utf8Name());
strcat(java_name, FileSymbol::java_suffix);
for (int k = 0; k < package -> directory.Length(); k++)
{
DirectorySymbol *directory_symbol = package -> directory[k];
file_symbol = directory_symbol -> FindFileSymbol(name_symbol);
if (file_symbol)
break;
PathSymbol *path_symbol = directory_symbol -> PathSym();
if (! path_symbol -> IsZip())
{
DirectoryEntry *java_entry = directory_symbol -> FindEntry(java_name, java_length),
*class_entry = (((! depend) || (java_entry == NULL))
? directory_symbol -> FindEntry(class_name, class_length)
: (DirectoryEntry *) NULL);
if (java_entry || class_entry)
{
file_symbol = directory_symbol -> InsertFileSymbol(name_symbol);
file_symbol -> directory_symbol = directory_symbol;
if (java_entry && ((! class_entry) || class_entry -> Mtime() < java_entry -> Mtime()))
{
file_symbol -> SetJava();
file_symbol -> mtime = java_entry -> Mtime();
}
else
{
if (java_entry)
file_symbol -> SetClass();
else file_symbol -> SetClassOnly();
file_symbol -> mtime = class_entry -> Mtime();
}
break;
}
}
}
delete [] java_name;
delete [] class_name;
return file_symbol;
}
TypeSymbol *Control::GetType(PackageSymbol *package, wchar_t *name)
{
NameSymbol *name_symbol = FindOrInsertName(name, wcslen(name));
TypeSymbol *type = package -> FindTypeSymbol(name_symbol);
if (! type)
{
FileSymbol *file_symbol = GetFile(package, name_symbol, option.depend);
type = system_semantic -> ReadType(file_symbol, package, name_symbol, 0);
}
else if (type -> SourcePending())
ProcessHeaders(type -> file_symbol);
return type;
}