#define PARSER_HT_LOCALS 2
#define PARSER_HT_SIZE 1024
+#define TYPEDEF_HT_SIZE 16
typedef struct {
lex_file *lex;
ast_value **imm_float;
ast_value **imm_string;
ast_value **imm_vector;
+ size_t translated;
/* must be deleted first, they reference immediates and values */
ast_value **accessors;
ht *variables;
ht htfields;
ht htglobals;
+ ht *typedefs;
/* not to be used directly, we use the hash table */
ast_expression **_locals;
size_t *_blocklocals;
+ ast_value **_typedefs;
+ size_t *_blocktypedefs;
size_t errors;
static void parser_enterblock(parser_t *parser);
static bool parser_leaveblock(parser_t *parser);
static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
-static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const);
+static bool parse_typedef(parser_t *parser);
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef);
static ast_block* parse_block(parser_t *parser, bool warnreturn);
static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
static ast_expression* parse_statement_or_block(parser_t *parser);
return util_strdup(str);
}
-static ast_value* parser_const_string(parser_t *parser, const char *str)
+static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
{
size_t i;
ast_value *out;
if (!strcmp(parser->imm_string[i]->constval.vstring, str))
return parser->imm_string[i];
}
- out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
+ if (dotranslate) {
+ char name[32];
+ snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
+ out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
+ } else
+ out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
out->isconst = true;
out->constval.vstring = parser_strdup(str);
vec_push(parser->imm_string, out);
return v;
}
+static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
+{
+ size_t i, hash;
+ ast_value *e;
+ hash = util_hthash(parser->typedefs[0], name);
+
+ for (i = vec_size(parser->typedefs); i > upto;) {
+ --i;
+ if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
+ return e;
+ }
+ return NULL;
+}
+
typedef struct
{
size_t etype; /* 0 = expression, others are operators */
else
parser->memberof = 0;
- if (parser->tok == TOKEN_IDENT)
+ if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
+ parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
+ {
+ /* a translatable string */
+ ast_value *val;
+
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement, got constant");
+ goto onerr;
+ }
+
+ parser->lex->flags.noops = true;
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "use _(\"string\") to create a translatable string constant");
+ goto onerr;
+ }
+ parser->lex->flags.noops = false;
+ if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
+ parseerror(parser, "expected a constant string in translatable-string extension");
+ goto onerr;
+ }
+ val = parser_const_string(parser, parser_tokval(parser), true);
+ wantop = true;
+ if (!val)
+ return false;
+ vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
+ DEBUGSHUNTDO(con_out("push string\n"));
+
+ if (!parser_next(parser) || parser->tok != ')') {
+ parseerror(parser, "expected closing paren after translatable string");
+ goto onerr;
+ }
+ }
+ else if (parser->tok == TOKEN_IDENT)
{
ast_expression *var;
if (wantop) {
goto onerr;
}
wantop = true;
- val = parser_const_string(parser, parser_tokval(parser));
+ val = parser_const_string(parser, parser_tokval(parser), false);
if (!val)
return false;
vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
{
vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
vec_push(parser->_blocklocals, vec_size(parser->_locals));
+ vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
+ vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
}
static bool parser_leaveblock(parser_t *parser)
{
bool rv = true;
- size_t locals;
+ size_t locals, typedefs;
if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
parseerror(parser, "internal error: parser_leaveblock with no block");
}
}
+ typedefs = vec_last(parser->_blocktypedefs);
+ while (vec_size(parser->_typedefs) != typedefs) {
+ ast_delete(vec_last(parser->_typedefs));
+ vec_pop(parser->_typedefs);
+ }
+ util_htdel(vec_last(parser->typedefs));
+ vec_pop(parser->typedefs);
+
return rv;
}
static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
{
- ast_loop *aloop;
+ ast_loop *aloop;
ast_expression *initexpr, *cond, *increment, *ontrue;
+ ast_value *typevar;
bool retval = true;
lex_ctx ctx = parser_ctx(parser);
goto onerr;
}
- if (parser->tok == TOKEN_TYPENAME) {
+ typevar = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (typevar || parser->tok == TOKEN_TYPENAME) {
if (opts_standard != COMPILER_GMQCC) {
if (parsewarning(parser, WARN_EXTENSIONS,
"current standard does not allow variable declarations in for-loop initializers"))
parseerror(parser, "TODO: assignment of new variables to be non-const");
goto onerr;
- if (!parse_variable(parser, block, true, false))
+ if (!parse_variable(parser, block, true, false, typevar))
goto onerr;
}
else if (parser->tok != ';')
static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
{
- if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
+ ast_value *typevar = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
{
/* local variable */
if (!block) {
if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
return false;
}
- if (!parse_variable(parser, block, false, false))
+ if (!parse_variable(parser, block, false, false, typevar))
return false;
*out = NULL;
return true;
parseerror(parser, "expected variable declaration");
return false;
}
- if (!parse_variable(parser, block, true, false))
+ if (!parse_variable(parser, block, true, false, NULL))
return false;
*out = NULL;
return true;
}
return true;
}
+ else if (!strcmp(parser_tokval(parser), "typedef"))
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected type definition after 'typedef'");
+ return false;
+ }
+ return parse_typedef(parser);
+ }
parseerror(parser, "Unexpected keyword");
return false;
}
while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
{
- ast_expression *expr;
+ ast_expression *expr = NULL;
if (parser->tok == '}')
break;
return false;
}
-static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
{
lex_ctx ctx;
else
{
/* for anything else just parse a typename */
- param = parse_typename(parser, NULL);
+ param = parse_typename(parser, NULL, NULL);
if (!param)
goto on_error;
vec_push(params, param);
* void() foo(), bar
* then the type-information 'void()' can be stored in 'storebase'
*/
-static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
{
ast_value *var, *tmp;
lex_ctx ctx;
const char *name = NULL;
bool isfield = false;
bool wasarray = false;
+ size_t morefields = 0;
ctx = parser_ctx(parser);
parseerror(parser, "expected typename for field definition");
return NULL;
}
- if (parser->tok != TOKEN_TYPENAME) {
+
+ /* Further dots are handled seperately because they won't be part of the
+ * basetype
+ */
+ while (parser->tok == '.') {
+ ++morefields;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected typename for field definition");
+ return NULL;
+ }
+ }
+
+ if (parser->tok == TOKEN_IDENT)
+ cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
+ if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
parseerror(parser, "expected typename");
return NULL;
}
}
/* generate the basic type value */
- var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
+ if (cached_typedef) {
+ var = ast_value_copy(cached_typedef);
+ ast_value_set_name(var, "<type(from_def)>");
+ } else
+ var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
+
+ for (; morefields; --morefields) {
+ tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+ }
+
/* do not yet turn into a field - remember:
* .void() foo; is a field too
* .void()() foo; is a function
return var;
}
-static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const)
+static bool parse_typedef(parser_t *parser)
+{
+ ast_value *typevar, *oldtype;
+ ast_expression *old;
+
+ typevar = parse_typename(parser, NULL, NULL);
+
+ if (!typevar)
+ return false;
+
+ if ( (old = parser_find_var(parser, typevar->name)) ) {
+ parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
+ " -> `%s` has been declared here: %s:%i",
+ typevar->name, ast_ctx(old).file, ast_ctx(old).line);
+ ast_delete(typevar);
+ return false;
+ }
+
+ if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
+ parseerror(parser, "type `%s` has already been declared here: %s:%i",
+ typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
+ ast_delete(typevar);
+ return false;
+ }
+
+ vec_push(parser->_typedefs, typevar);
+ util_htset(vec_last(parser->typedefs), typevar->name, typevar);
+
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after typedef");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after typedef");
+ return false;
+ }
+
+ return true;
+}
+
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, bool is_const, ast_value *cached_typedef)
{
ast_value *var;
ast_value *proto;
ast_member *me[3];
/* get the first complete variable */
- var = parse_typename(parser, &basetype);
+ var = parse_typename(parser, &basetype, cached_typedef);
if (!var) {
if (basetype)
ast_delete(basetype);
}
}
- me[0] = me[1] = me[2] = NULL;
- cleanvar = false;
}
+ me[0] = me[1] = me[2] = NULL;
+ cleanvar = false;
/* Part 2.2
* deal with arrays
*/
if (parser->tok != '{') {
if (parser->tok != '=') {
- parseerror(parser, "missing semicolon or initializer");
+ parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
break;
}
static bool parser_global_statement(parser_t *parser)
{
- if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
+ ast_value *istype = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ istype = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
{
- return parse_variable(parser, NULL, false, false);
+ return parse_variable(parser, NULL, false, false, istype);
}
else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var"))
{
parseerror(parser, "expected variable declaration after 'var'");
return false;
}
- return parse_variable(parser, NULL, true, false);
+ return parse_variable(parser, NULL, true, false, NULL);
}
}
else if (parser->tok == TOKEN_KEYWORD)
parseerror(parser, "expected variable declaration after 'const'");
return false;
}
- return parse_variable(parser, NULL, true, true);
+ if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "var")) {
+ (void)!parsewarning(parser, WARN_CONST_VAR, "ignoring `var` after const qualifier");
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected variable declaration after 'const var'");
+ return false;
+ }
+ }
+ return parse_variable(parser, NULL, true, true, NULL);
+ }
+ else if (!strcmp(parser_tokval(parser), "typedef")) {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected type definition after 'typedef'");
+ return false;
+ }
+ return parse_typedef(parser);
}
parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
return false;
vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
+ vec_push(parser->_blocktypedefs, 0);
return true;
}
for (i = 0; i < vec_size(parser->variables); ++i)
util_htdel(parser->variables[i]);
vec_free(parser->variables);
+ vec_free(parser->_blocklocals);
+ vec_free(parser->_locals);
+
+ for (i = 0; i < vec_size(parser->_typedefs); ++i)
+ ast_delete(parser->_typedefs[i]);
+ vec_free(parser->_typedefs);
+ for (i = 0; i < vec_size(parser->typedefs); ++i)
+ util_htdel(parser->typedefs[i]);
+ vec_free(parser->typedefs);
+ vec_free(parser->_blocktypedefs);
mem_d(parser);
}
projects / xonotic / gmqcc.git / blobdiff