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|
namespace SQLHeavy {
public errordomain GeneratorError {
CONFIGURATION,
METADATA,
SYMBOL_RESOLVER,
DATABASE,
SELECTOR
}
public class Generator : GLib.Object {
[CCode (array_length = false, array_null_terminated = true)]
static string[] sources;
[CCode (array_length = false, array_null_terminated = true)]
static string[] vapi_directories;
[CCode (array_length = false, array_null_terminated = true)]
static string[] packages;
static string metadata_location;
static string output_location;
static bool write_properties;
private Vala.CodeContext context = new Vala.CodeContext ();
private GLib.SList<string> databases = new GLib.SList<string> ();
const GLib.OptionEntry[] options = {
{ "metadata", 'm', 0, OptionArg.FILENAME, ref metadata_location, "Load metadata from FILE", "FILE..." },
{ "vapidir", 0, 0, OptionArg.FILENAME_ARRAY, ref vapi_directories, "Look for package bindings in DIRECTORY", "DIRECTORY..." },
{ "pkg", 0, 0, OptionArg.STRING_ARRAY, ref packages, "Include binding for PACKAGE", "PACKAGE..." },
{ "output", 'o', 0, OptionArg.FILENAME, ref output_location, "Output to FILE", "FILE..." },
{ "properties", 'p', 0, GLib.OptionArg.NONE, ref write_properties, "Write properties instead of methods", null },
{ "", 0, 0, OptionArg.FILENAME_ARRAY, ref sources, "SQLite databases", "DATABASE..." },
{ null }
};
private Vala.HashMap<string, Vala.HashMap <string, string>> cache =
new Vala.HashMap<string, Vala.HashMap <string, string>> (GLib.str_hash, GLib.str_equal);
private Vala.HashMap<string, Vala.HashMap <string, string>> wildcard_cache =
new Vala.HashMap<string, Vala.HashMap <string, string>> (GLib.str_hash, GLib.str_equal);
private Vala.HashMap <string, string> get_symbol_properties (string symbol) {
var map = this.cache.get (symbol);
if ( map != null )
return map;
map = new Vala.HashMap<string,string> (GLib.str_hash, GLib.str_equal, GLib.str_equal);
foreach ( string selector in this.wildcard_cache.get_keys () ) {
if ( GLib.PatternSpec.match_simple (selector, symbol) ) {
var wmap = this.wildcard_cache.get (selector);
foreach ( string key in wmap.get_keys () )
map.set (key, wmap.get (key));
}
}
this.cache.set (symbol, map);
return map;
}
private void set_symbol_property (string symbol, string key, string value) {
this.get_symbol_properties (symbol).set (key, value);
}
private string? get_symbol_property (string symbol, string key) {
return this.get_symbol_properties (symbol).get (key);
}
private string get_symbol_name (string symbol) {
string? sym = this.get_symbol_property (symbol, "name");
if ( sym != null )
return sym;
int sym_t = 3;
bool tb = true, sb = true, tf = true;
GLib.StringBuilder name = new GLib.StringBuilder.sized (symbol.length * 2);
for ( sym = symbol ; ; sym = sym.offset (1) ) {
var c = sym.get_char_validated ();
if ( c <= 0 )
break;
if ( sb ) {
if ( c == '@' ) {
sym_t = 1;
continue;
} else if ( c == '%' ) {
sym_t = 2;
continue;
}
}
if ( c == '_' ) {
tb = true;
tf = true;
continue;
} else if ( c == '/' ) {
sym_t = int.min (3, sym_t + 1);
tf = tb = sb = true;
name.truncate (0);
continue;
}
if ( c.isupper () && !tb ) {
if ( sym_t == 3 )
name.append_c ('_');
tb = true;
tf = false;
name.append_unichar (sym_t == 3 ? c.tolower () : c.toupper ());
continue;
} else if ( c.islower () && tb ) {
if ( tf && sym_t != 3 )
name.append_unichar (c.toupper ());
else if ( tf && !sb && sym_t == 3 ) {
name.append_c ('_');
name.append_unichar (c);
}
else
name.append_unichar (c);
tb = tf = false;
continue;
}
sb = false;
name.append_unichar (tb ? (sym_t == 3 ? c.tolower () : c.toupper ()) : c.tolower ());
tf = false;
}
this.set_symbol_property (symbol, "name", name.str);
return name.str;
}
public bool symbol_is_hidden (string symbol) {
var p = this.get_symbol_property (symbol, "hidden");
return p != null && (p == "1" || p == "true" || p == "yes");
}
private static Vala.DataType type_from_string (string datatype) {
bool is_array = false;
var internal_datatype = datatype;
Vala.UnresolvedSymbol? symbol = null;
if ( datatype.has_suffix ("[]") ) {
internal_datatype = internal_datatype.substring (0, -2);
is_array = true;
}
foreach ( unowned string m in internal_datatype.split (".") )
symbol = new Vala.UnresolvedSymbol (symbol, m);
var data_type = new Vala.UnresolvedType.from_symbol (symbol);
if ( is_array )
return new Vala.ArrayType (data_type, 1, null);
else
return data_type;
}
private Vala.DataType? get_data_type (string symbol) {
string? name = this.get_symbol_property (symbol, "type");
return name == null ? null : type_from_string (name);
}
private void parse_field (SQLHeavy.Table table, int field, Vala.Class cl, Vala.SwitchStatement signals, Vala.SourceReference source_reference) throws GeneratorError, SQLHeavy.Error {
var db = table.queryable.database;
var db_symbol = GLib.Path.get_basename (db.filename).split (".", 2)[0];
var symbol = @"@$(GLib.Path.get_basename (db_symbol))/$(table.name)/$(table.field_name (field))";
var name = this.get_symbol_name (symbol);
if ( this.symbol_is_hidden (symbol) )
return;
var data_type = this.get_data_type (symbol);
if ( data_type == null ) {
var affinity = table.field_affinity (field).down ().split (" ");
if ( affinity[0] == "integer" )
affinity[0] = "int";
else if ( affinity[0] == "text" ||
affinity[0].has_prefix ("varchar") ||
affinity[0].has_prefix ("char") )
affinity[0] = "string";
else if ( affinity[0] == "blob" )
affinity[0] = "uint8[]";
else if ( affinity[0] == "timestamp" ||
affinity[0] == "datetime" )
affinity[0] = "time_t";
data_type = type_from_string (affinity[0]);
}
var data_type_get = data_type.copy ();
data_type_get.value_owned = true;
var switch_section = new Vala.SwitchSection (source_reference);
signals.add_section (switch_section);
switch_section.add_label (new Vala.SwitchLabel (new Vala.StringLiteral (@"\"$(name)\"", source_reference), source_reference));
Vala.MethodCall emit_changed_notify;
if ( !write_properties ) {
var changed_signal = new Vala.Signal (@"$(name)_changed", new Vala.VoidType (source_reference), source_reference);
changed_signal.access = Vala.SymbolAccessibility.PUBLIC;
cl.add_signal (changed_signal);
emit_changed_notify = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this"), @"$(name)_changed", source_reference), source_reference);
{
var get_method = new Vala.Method (@"get_$(name)", data_type_get, source_reference);
cl.add_method (get_method);
get_method.access = Vala.SymbolAccessibility.PUBLIC;
get_method.add_error_type (type_from_string ("SQLHeavy.Error"));
var block = new Vala.Block (source_reference);
var call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this"), @"get_$(data_type_get.to_string ())", source_reference), source_reference);
call.add_argument (new Vala.StringLiteral (@"\"$(table.field_name (field))\"", source_reference));
block.add_statement (new Vala.ReturnStatement (call, source_reference));
get_method.body = block;
}
{
var set_method = new Vala.Method (@"set_$(name)", new Vala.VoidType (source_reference), source_reference);
set_method.add_parameter (new Vala.Parameter ("value", data_type, source_reference));
cl.add_method (set_method);
set_method.access = Vala.SymbolAccessibility.PUBLIC;
set_method.add_error_type (type_from_string ("SQLHeavy.Error"));
var block = new Vala.Block (source_reference);
var call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this"), @"set_$(data_type.to_string ())", source_reference), source_reference);
call.add_argument (new Vala.StringLiteral (@"\"$(table.field_name (field))\"", source_reference));
block.add_statement (new Vala.ExpressionStatement (call, source_reference));
set_method.body = block;
}
} else {
Vala.PropertyAccessor get_accessor, set_accessor;
emit_changed_notify = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this", source_reference), "notify_property", source_reference), source_reference);
emit_changed_notify.add_argument (new Vala.StringLiteral ("\"" + name.replace ("_", "-") + "\"", source_reference));
{
var block = new Vala.Block (source_reference);
var try_block = new Vala.Block (source_reference);
var catch_block = new Vala.Block (source_reference);
var try_stmt = new Vala.TryStatement (try_block, null, source_reference);
var call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this"), @"get_$(data_type_get.to_string ())", source_reference), source_reference);
call.add_argument (new Vala.StringLiteral (@"\"$(table.field_name (field))\"", source_reference));
try_block.add_statement (new Vala.ReturnStatement (call, source_reference));
var error_call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("GLib"), "error", source_reference), source_reference);
error_call.add_argument (new Vala.StringLiteral (@"\"Unable to retrieve `$(name)': %s\"", source_reference));
error_call.add_argument (new Vala.MemberAccess (new Vala.MemberAccess (null, "e"), "message", source_reference));
catch_block.add_statement (new Vala.ExpressionStatement (error_call, source_reference));
var anr = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("GLib", source_reference), "assert_not_reached", source_reference));
catch_block.add_statement (new Vala.ExpressionStatement (anr, source_reference));
try_stmt.add_catch_clause (new Vala.CatchClause (type_from_string ("SQLHeavy.Error"), "e", catch_block, source_reference));
block.add_statement (try_stmt);
get_accessor = new Vala.PropertyAccessor (true, false, false, data_type_get, block, source_reference);
}
{
var block = new Vala.Block (source_reference);
var try_block = new Vala.Block (source_reference);
var catch_block = new Vala.Block (source_reference);
var try_stmt = new Vala.TryStatement (try_block, null, source_reference);
var call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this", source_reference), @"set_$(data_type_get.to_string ())", source_reference), source_reference);
call.add_argument (new Vala.StringLiteral (@"\"$(table.field_name (field))\"", source_reference));
call.add_argument (new Vala.MemberAccess (null, "value", source_reference));
try_block.add_statement (new Vala.ExpressionStatement (call, source_reference));
var error_call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("GLib"), "error", source_reference), source_reference);
error_call.add_argument (new Vala.StringLiteral (@"\"Unable to set `$(name)': %s\"", source_reference));
error_call.add_argument (new Vala.MemberAccess (new Vala.MemberAccess (null, "e"), "message", source_reference));
catch_block.add_statement (new Vala.ExpressionStatement (error_call, source_reference));
try_stmt.add_catch_clause (new Vala.CatchClause (type_from_string ("SQLHeavy.Error"), "e", catch_block, source_reference));
block.add_statement (try_stmt);
set_accessor = new Vala.PropertyAccessor (false, true, false, data_type, block, source_reference);
}
var prop = new Vala.Property (name, data_type, get_accessor, set_accessor, source_reference);
prop.access = Vala.SymbolAccessibility.PUBLIC;
cl.add_property (prop);
}
switch_section.add_statement (new Vala.ExpressionStatement (emit_changed_notify, source_reference));
switch_section.add_statement (new Vala.BreakStatement (source_reference));
}
private void parse_table (SQLHeavy.Table table, Vala.Namespace ns, Vala.SourceReference source_reference) throws GeneratorError, SQLHeavy.Error {
var db = table.queryable.database;
var db_symbol = GLib.Path.get_basename (db.filename).split (".", 2)[0];
var symbol = @"@$(GLib.Path.get_basename (db_symbol))/$(table.name)";
var symbol_name = this.get_symbol_name (symbol);
if ( this.symbol_is_hidden (symbol) )
return;
var cl = ns.scope.lookup (symbol_name) as Vala.Class;
if ( cl == null ) {
cl = new Vala.Class (symbol_name, source_reference);
cl.access = Vala.SymbolAccessibility.PUBLIC;
ns.add_class (cl);
}
cl.add_base_type (type_from_string ("SQLHeavy.Row"));
Vala.SwitchStatement signals_switch;
{
var register_notify = new Vala.Method ("emit_change_notification", new Vala.VoidType ());
register_notify.access = Vala.SymbolAccessibility.PRIVATE;
register_notify.add_parameter (new Vala.Parameter ("field", type_from_string ("int")));
var block = new Vala.Block (source_reference);
var try_block = new Vala.Block (source_reference);
var catch_block = new Vala.Block (source_reference);
var try_stmt = new Vala.TryStatement (try_block, null, source_reference);
var field_name = new Vala.LocalVariable (type_from_string ("string"), "field_name", new Vala.StringLiteral ("null"), source_reference);
block.add_statement (new Vala.DeclarationStatement (field_name, source_reference));
block.add_statement (try_stmt);
var get_field_name = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("this"), "field_name"));
get_field_name.add_argument (new Vala.MemberAccess (null, "field"));
try_block.add_statement (new Vala.ExpressionStatement (new Vala.Assignment (new Vala.StringLiteral ("field_name"), get_field_name)));
var warn_call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.StringLiteral ("GLib"), "warning"), source_reference);
warn_call.add_argument (new Vala.StringLiteral ("\"" + "Unknown field: %d" + "\"", source_reference));
warn_call.add_argument (new Vala.MemberAccess (null, "field", source_reference));
catch_block.add_statement (new Vala.ExpressionStatement (warn_call, source_reference));
catch_block.add_statement (new Vala.ReturnStatement (null, source_reference));
try_stmt.add_catch_clause (new Vala.CatchClause (type_from_string ("SQLHeavy.Error"), "e", catch_block, source_reference));
signals_switch = new Vala.SwitchStatement (new Vala.StringLiteral ("field_name"), source_reference);
block.add_statement (signals_switch);
register_notify.body = block;
cl.add_method (register_notify);
}
var con = new Vala.Constructor (source_reference);
con.body = new Vala.Block (source_reference);
var conn_call = new Vala.MethodCall (new Vala.MemberAccess (new Vala.MemberAccess (new Vala.StringLiteral ("this"), "field_changed", source_reference), "connect", source_reference), source_reference);
conn_call.add_argument (new Vala.MemberAccess (new Vala.StringLiteral ("this"), "emit_change_notification", source_reference));
con.body.add_statement (new Vala.ExpressionStatement (conn_call, source_reference));
cl.constructor = con;
for ( var field = 0 ; field < table.field_count ; field++ ) {
this.parse_field (table, field, cl, signals_switch, source_reference);
}
}
private void parse_database (SQLHeavy.Database db) throws GeneratorError {
var symbol = "@".concat (GLib.Path.get_basename (db.filename).split (".", 2)[0]);
var symbol_name = this.get_symbol_name (symbol);
Vala.Namespace? ns = this.context.root.scope.lookup (symbol_name) as Vala.Namespace;
Vala.SourceFile source_file = new Vala.SourceFile (this.context, Vala.SourceFileType.NONE, db.filename);
Vala.SourceReference source_reference = new Vala.SourceReference (source_file);
if ( ns == null ) {
ns = new Vala.Namespace (symbol_name, source_reference);
this.context.root.add_namespace (ns);
}
if ( this.symbol_is_hidden (symbol) )
return;
try {
var tables = db.get_tables ();
foreach ( unowned SQLHeavy.Table table in tables.get_values () ) {
this.parse_table (table, ns, source_reference);
}
} catch ( SQLHeavy.Error e ) {
throw new GeneratorError.DATABASE ("Database error: %s", e.message);
}
}
public void run () throws GeneratorError {
if ( output_location == null ) {
GLib.stderr.printf ("You must supply an output location\n");
return;
}
var parser = new Vala.Parser ();
parser.parse (this.context);
foreach ( unowned string dbfile in this.databases ) {
SQLHeavy.Database db;
try {
db = new SQLHeavy.Database (dbfile, SQLHeavy.FileMode.READ);
} catch ( SQLHeavy.Error e ) {
throw new GeneratorError.CONFIGURATION ("Unable to open database: %s", e.message);
}
this.parse_database (db);
}
var resolver = new Vala.SymbolResolver ();
resolver.resolve (context);
if (context.report.get_errors () > 0)
throw new GeneratorError.SYMBOL_RESOLVER ("Error resolving symbols.");
context.analyzer.analyze (context);
var code_writer = new Vala.CodeWriter (Vala.CodeWriterType.DUMP);
code_writer.write_file (this.context, output_location);
}
private static string parse_selector (string selector, out bool wildcard) throws GeneratorError {
wildcard = false;
string[] real_selector = new string[3];
var segments = selector.split ("/", 3);
int pos = 0;
for ( int seg = 0 ; seg < segments.length ; seg++ ) {
var first_char = segments[seg].get_char ();
if ( first_char == '%' || first_char == '@' ) {
int dest_pos;
if ( first_char == '%' ) {
segments[seg] = segments[seg].offset (1);
dest_pos = 1;
}
else
dest_pos = 0;
while ( pos < dest_pos ) {
wildcard = true;
real_selector[pos] = "*";
pos++;
}
} else if ( pos == 0 && first_char != '*' ) {
wildcard = true;
real_selector[0] = "*";
real_selector[1] = "*";
pos = 2;
}
if ( segments[seg] == "*" )
wildcard = true;
if ( pos > 2 || real_selector[pos] != null )
throw new GeneratorError.SELECTOR ("Invalid selector (%s).", selector);
real_selector[pos] = segments[seg];
pos++;
}
return string.joinv ("/", real_selector);
}
private void parse_metadata () throws GeneratorError, GLib.KeyFileError {
var metadata = new GLib.KeyFile ();
metadata.load_from_file (metadata_location, GLib.KeyFileFlags.NONE);
foreach ( unowned string group in metadata.get_groups () ) {
bool is_wildcard;
var selector = parse_selector (group, out is_wildcard);
var cache = is_wildcard ? this.wildcard_cache : this.cache;
var properties = cache.get (selector);
if ( properties == null ) {
properties = new Vala.HashMap<string, string> (GLib.str_hash, GLib.str_equal, GLib.str_equal);
cache.set (selector, properties);
}
foreach ( unowned string key in metadata.get_keys (group) )
properties.set (key, metadata.get_string (group, key));
}
}
public void configure () throws GeneratorError {
if ( metadata_location != null ) {
try {
this.parse_metadata ();
} catch ( GLib.KeyFileError e ) {
throw new GeneratorError.CONFIGURATION ("Unable to load metadata file: %s", e.message);
} catch ( GLib.FileError e ) {
throw new GeneratorError.CONFIGURATION ("Unable to load metadata file: %s", e.message);
}
}
this.context.profile = Vala.Profile.GOBJECT;
Vala.CodeContext.push (this.context);
// Default packages
this.context.add_external_package ("glib-2.0");
this.context.add_external_package ("gobject-2.0");
this.context.add_external_package ("sqlheavy-%s".printf (SQLHeavy.Version.api ()));
foreach ( unowned string pkg in packages ) {
this.context.add_external_package (pkg);
}
foreach ( unowned string source in sources ) {
if ( source.has_suffix (".vala") ) {
if ( GLib.FileUtils.test (source, GLib.FileTest.EXISTS) )
this.context.add_source_file (new Vala.SourceFile (this.context, Vala.SourceFileType.NONE, source));
else
throw new GeneratorError.CONFIGURATION (@"Source file '$(source)' does not exist.");
} else {
this.databases.prepend (source);
}
}
}
private static int main (string[] args) {
try {
var opt_context = new GLib.OptionContext ("- SQLHeavy ORM Generator");
opt_context.set_help_enabled (true);
opt_context.add_main_entries (options, null);
opt_context.set_summary ("This tool will generate a Vala file which provides an object for each\ntable in the specified database(s), each of which extends the\nSQLHeavyRow class.");
opt_context.set_description ("Copyright 2010 Evan Nemerson.\nReleased under versions 2.1 and 3 of the LGPL.\n\nFor more information, or to report a bug, see\n<http://code.google.com/p/sqlheavy>");
opt_context.parse (ref args);
} catch ( GLib.OptionError e ) {
GLib.stdout.puts (@"$(e.message)\n");
GLib.stdout.puts (@"Run '$(args[0]) --help' to see a full list of available command line options.\n");
return 1;
}
if ( sources == null ) {
GLib.stderr.puts ("No databases specified.\n");
return 1;
}
var generator = new Generator ();
try {
generator.configure ();
generator.run ();
} catch ( GeneratorError e ) {
GLib.stderr.puts (@"Error: $(e.message)\n");
GLib.stdout.puts (@"Run '$(args[0]) --help' to see a full list of available command line options.\n");
return 1;
}
return 0;
}
}
}
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