static bool parser_variable(parser_t *parser, ast_block *localblock);
static ast_block* parser_parse_block(parser_t *parser);
static ast_expression* parser_parse_statement_or_block(parser_t *parser);
-static ast_expression* parser_expression_leave(parser_t *parser);
-static ast_expression* parser_expression(parser_t *parser);
+static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
+static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
void parseerror(parser_t *parser, const char *fmt, ...)
{
}
/* returns true if it counts as an error */
-bool parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
+bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
{
va_list ap;
int lvl = LVL_WARNING;
return OPTS_WARN(WARN_ERROR);
}
+/**********************************************************************
+ * some maths used for constant folding
+ */
+
+vector vec3_add(vector a, vector b)
+{
+ vector out;
+ out.x = a.x + b.x;
+ out.y = a.y + b.y;
+ out.z = a.z + b.z;
+ return out;
+}
+
+vector vec3_sub(vector a, vector b)
+{
+ vector out;
+ out.x = a.x - b.x;
+ out.y = a.y - b.y;
+ out.z = a.z - b.z;
+ return out;
+}
+
+qcfloat vec3_mulvv(vector a, vector b)
+{
+ return (a.x * b.x + a.y * b.y + a.z * b.z);
+}
+
+vector vec3_mulvf(vector a, float b)
+{
+ vector out;
+ out.x = a.x * b;
+ out.y = a.y * b;
+ out.z = a.z * b;
+ return out;
+}
+
+/**********************************************************************
+ * parsing
+ */
+
bool parser_next(parser_t *parser)
{
/* lex_do kills the previous token */
if (!strcmp(parser->locals[i].name, name))
return parser->locals[i].var;
}
+ if (!parser->function)
+ return NULL;
fun = parser->function->vtype;
for (i = 0; i < fun->expression.params_count; ++i) {
if (!strcmp(fun->expression.params[i]->name, name))
ast_expression *out = NULL;
ast_expression *exprs[3];
ast_block *blocks[3];
+ ast_value *asvalue[3];
size_t i, assignop;
qcint generated_op = 0;
for (i = 0; i < op->operands; ++i) {
exprs[i] = sy->out[sy->out_count+i].out;
blocks[i] = sy->out[sy->out_count+i].block;
+ asvalue[i] = (ast_value*)exprs[i];
}
if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
#define NotSameType(T) \
(exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
exprs[0]->expression.vtype != T)
+#define CanConstFold(A, B) \
+ (ast_istype((A), ast_value) && ast_istype((B), ast_value) && \
+ ((ast_value*)(A))->isconst && ((ast_value*)(B))->isconst)
+#define ConstV(i) (asvalue[(i)]->constval.vvec)
+#define ConstF(i) (asvalue[(i)]->constval.vfloat)
switch (op->id)
{
default:
return true;
case opid1('+'):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "Cannot add type %s and %s",
- type_name[exprs[0]->expression.vtype],
- type_name[exprs[1]->expression.vtype]);
- return false;
- }
- if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
- parseerror(parser, "type error: %s - %s not defined",
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
+ (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
+ {
+ parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
}
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ {
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
+ }
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
break;
case TYPE_VECTOR:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "type error: cannot add type %s to %s",
+ parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
};
break;
case opid1('-'):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "type error: cannot subtract type %s from %s",
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
+ (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
+ {
+ parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
}
- if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
- parseerror(parser, "type error: %s - %s not defined",
- type_name[exprs[0]->expression.vtype],
- type_name[exprs[1]->expression.vtype]);
- return false;
- }
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
break;
case TYPE_VECTOR:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "type error: cannot subtract type %s from %s",
+ parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
exprs[1]->expression.vtype != TYPE_VECTOR &&
exprs[1]->expression.vtype != TYPE_FLOAT)
{
- parseerror(parser, "type error: cannot multiply type %s by %s",
+ parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
if (exprs[1]->expression.vtype == TYPE_VECTOR)
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
+ }
else
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
+ }
break;
case TYPE_VECTOR:
if (exprs[1]->expression.vtype == TYPE_FLOAT)
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
+ }
else
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ }
break;
default:
- parseerror(parser, "type error: cannot multiplye type %s by %s",
+ parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
break;
case opid1('/'):
if (NotSameType(TYPE_FLOAT)) {
- parseerror(parser, "type error: cannot divide types %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
}
- out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
break;
case opid1('%'):
case opid2('%','='):
case opid1('|'):
case opid1('&'):
if (NotSameType(TYPE_FLOAT)) {
- parseerror(parser, "type error: cannot perform bit operations on types %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
}
- out = (ast_expression*)ast_binary_new(ctx,
- (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
- exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser,
+ (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
+ (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
+ else
+ out = (ast_expression*)ast_binary_new(ctx,
+ (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
+ exprs[0], exprs[1]);
break;
case opid1('^'):
parseerror(parser, "TODO: bitxor");
case opid2('&','&'):
generated_op += INSTR_AND;
if (NotSameType(TYPE_FLOAT)) {
- parseerror(parser, "type error: cannot apply logical operation on types %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
}
if (opts_standard == COMPILER_GMQCC)
printf("TODO: early out logic\n");
- out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser,
+ (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
break;
case opid1('>'):
case opid2('<', '='):
generated_op += INSTR_LE;
if (NotSameType(TYPE_FLOAT)) {
- parseerror(parser, "type error: cannot compare types %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
break;
case opid2('!', '='):
if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "type error: cannot compare types %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
break;
case opid2('=', '='):
if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "type error: cannot compare types %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
break;
case opid2('+','='):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "Cannot add type %s and %s",
- type_name[exprs[0]->expression.vtype],
- type_name[exprs[1]->expression.vtype]);
- return false;
- }
- if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
- parseerror(parser, "type error: %s - %s not defined",
+ case opid2('-','='):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
+ (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
+ {
+ parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
}
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
+ else
+ assignop = type_store_instr[exprs[0]->expression.vtype];
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
+ exprs[0], exprs[1]);
break;
case TYPE_VECTOR:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
+ exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "type error: cannot add type %s to %s",
+ parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
return true;
}
-static ast_expression* parser_expression_leave(parser_t *parser)
+static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
{
ast_expression *expr = NULL;
shunt sy;
}
/* found an operator */
op = &operators[o];
+
+ /* when declaring variables, a comma starts a new variable */
+ if (op->id == opid1(',') && !parens && stopatcomma)
+ break;
+
if (op->id == opid1('.')) {
/* for gmqcc standard: open up the namespace of the previous type */
ast_expression *prevex = sy.out[sy.out_count-1].out;
return NULL;
}
-static ast_expression* parser_expression(parser_t *parser)
+static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
{
- ast_expression *e = parser_expression_leave(parser);
+ ast_expression *e = parser_expression_leave(parser, stopatcomma);
if (!e)
return NULL;
if (!parser_next(parser)) {
return false;
}
/* parse the condition */
- cond = parser_expression_leave(parser);
+ cond = parser_expression_leave(parser, false);
if (!cond)
return false;
/* closing paren */
return false;
}
/* parse the condition */
- cond = parser_expression_leave(parser);
+ cond = parser_expression_leave(parser, false);
if (!cond)
return false;
/* closing paren */
return true;
}
+static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'do' and get the body */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected loop body");
+ return false;
+ }
+ ontrue = parser_parse_statement_or_block(parser);
+ if (!ontrue)
+ return false;
+
+ /* expect the "while" */
+ if (parser->tok != TOKEN_KEYWORD ||
+ strcmp(parser_tokval(parser), "while"))
+ {
+ parseerror(parser, "expected 'while' and condition");
+ ast_delete(ontrue);
+ return false;
+ }
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ ast_delete(ontrue);
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'while' condition after opening paren");
+ ast_delete(ontrue);
+ return false;
+ }
+ /* parse the condition */
+ cond = parser_expression_leave(parser, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+ /* parse on */
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "expected semicolon after condition");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+
+ aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
{
ast_loop *aloop;
}
else if (parser->tok != ';')
{
- initexpr = parser_expression_leave(parser);
+ initexpr = parser_expression_leave(parser, false);
if (!initexpr)
goto onerr;
}
/* parse the condition */
if (parser->tok != ';') {
- cond = parser_expression_leave(parser);
+ cond = parser_expression_leave(parser, false);
if (!cond)
goto onerr;
}
/* parse the incrementor */
if (parser->tok != ')') {
- increment = parser_expression_leave(parser);
+ increment = parser_expression_leave(parser, false);
if (!increment)
goto onerr;
}
parseerror(parser, "cannot declare a variable from here");
return false;
}
+ if (opts_standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
+ return false;
+ }
if (!parser_variable(parser, block))
return false;
*out = NULL;
}
else if (parser->tok == TOKEN_KEYWORD)
{
- if (!strcmp(parser_tokval(parser), "return"))
+ if (!strcmp(parser_tokval(parser), "local"))
+ {
+ if (!block) {
+ parseerror(parser, "cannot declare a local variable here");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected variable declaration");
+ return false;
+ }
+ if (!parser_variable(parser, block))
+ return false;
+ *out = NULL;
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "return"))
{
ast_expression *exp = NULL;
ast_return *ret = NULL;
}
if (parser->tok != ';') {
- exp = parser_expression(parser);
+ exp = parser_expression(parser, false);
if (!exp)
return false;
{
return parser_parse_while(parser, block, out);
}
+ else if (!strcmp(parser_tokval(parser), "do"))
+ {
+ return parser_parse_dowhile(parser, block, out);
+ }
else if (!strcmp(parser_tokval(parser), "for"))
{
+ if (opts_standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
+ return false;
+ }
return parser_parse_for(parser, block, out);
}
parseerror(parser, "Unexpected keyword");
}
else
{
- ast_expression *exp = parser_expression(parser);
+ ast_expression *exp = parser_expression(parser, false);
if (!exp)
return false;
*out = exp;
*/
if (proto) {
if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
- parseerror(parser, "prototype declared at %s:%i had a different type",
+ parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
+ proto->name,
ast_ctx(proto).file, ast_ctx(proto).line);
ast_function_delete(func);
ast_value_delete(fval);
vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
- vx.name = mem_a(len+3);
- vy.name = mem_a(len+3);
- vz.name = mem_a(len+3);
- strcpy(vx.name, varent.name);
- strcpy(vy.name, varent.name);
- strcpy(vz.name, varent.name);
+ vx.name = (char*)mem_a(len+3);
+ vy.name = (char*)mem_a(len+3);
+ vz.name = (char*)mem_a(len+3);
+ memcpy(vx.name, varent.name, len);
+ memcpy(vy.name, varent.name, len);
+ memcpy(vz.name, varent.name, len);
vx.name[len] = vy.name[len] = vz.name[len] = '_';
vx.name[len+1] = 'x';
vy.name[len+1] = 'y';
}
func->builtin = -parser_token(parser)->constval.i;
+
+ if (!parser_next(parser))
+ return false;
} else if (parser->tok == '{') {
/* function body */
ast_block *block;
}
if (parser->tok == ';')
- return parser_next(parser);
+ return parser_next(parser) || parser->tok == TOKEN_EOF;
else if (opts_standard == COMPILER_QCC)
parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
return true;
} else {
- parseerror(parser, "TODO, const assignment");
- }
+ ast_expression *cexp;
+ ast_value *cval;
- if (!parser_next(parser))
- return false;
+ cexp = parser_expression_leave(parser, true);
+ cval = (ast_value*)cexp;
+ if (!ast_istype(cval, ast_value) || !cval->isconst)
+ parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
+ else
+ {
+ var->isconst = true;
+ memcpy(&var->constval, &cval->constval, sizeof(var->constval));
+ memset(&cval->constval, 0, sizeof(cval->constval));
+ ast_unref(cval);
+ }
+ }
if (parser->tok == ',') {
/* another */
}
if (parser->tok != ';') {
- parseerror(parser, "expected semicolon");
+ parseerror(parser, "missing semicolon");
return false;
}
if (!var)
return false;
- /* now the field name */
- if (parser->tok != TOKEN_IDENT) {
- parseerror(parser, "expected field name");
- ast_delete(var);
- return false;
- }
-
- /* check for an existing field
- * in original qc we also have to check for an existing
- * global named like the field
- */
- if (opts_standard == COMPILER_QCC) {
- if (parser_find_global(parser, parser_tokval(parser))) {
- parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ while (true) {
+ /* now the field name */
+ if (parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected field name");
ast_delete(var);
return false;
}
- }
- if (parser_find_field(parser, parser_tokval(parser))) {
- parseerror(parser, "field %s already exists", parser_tokval(parser));
- ast_delete(var);
- return false;
- }
- /* if it was a function, turn it into a function */
- if (isfunc) {
- ast_value *fval;
- /* turn var into a value of TYPE_FUNCTION, with the old var
- * as return type
+ /* check for an existing field
+ * in original qc we also have to check for an existing
+ * global named like the field
*/
- fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
- if (!fval) {
- ast_value_delete(var);
- ast_value_delete(fval);
+ if (opts_standard == COMPILER_QCC) {
+ if (parser_find_global(parser, parser_tokval(parser))) {
+ parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ ast_delete(var);
+ return false;
+ }
+ }
+ if (parser_find_field(parser, parser_tokval(parser))) {
+ parseerror(parser, "field %s already exists", parser_tokval(parser));
+ ast_delete(var);
return false;
}
- fval->expression.next = (ast_expression*)var;
- MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
+ /* if it was a function, turn it into a function */
+ if (isfunc) {
+ ast_value *fval;
+ /* turn var into a value of TYPE_FUNCTION, with the old var
+ * as return type
+ */
+ fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
+ if (!fval) {
+ ast_value_delete(var);
+ ast_value_delete(fval);
+ return false;
+ }
- var = fval;
- }
+ fval->expression.next = (ast_expression*)var;
+ MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
- /* turn it into a field */
- fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
- fld->expression.next = (ast_expression*)var;
+ var = fval;
+ }
- varent.var = (ast_expression*)fld;
- if (var->expression.vtype == TYPE_VECTOR)
- {
- /* create _x, _y and _z fields as well */
- parseerror(parser, "TODO: vector field members (_x,_y,_z)");
- ast_delete(fld);
- return false;
- }
+ /* turn it into a field */
+ fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
+ fld->expression.next = (ast_expression*)var;
- varent.name = util_strdup(fld->name);
- (void)!parser_t_fields_add(parser, varent);
+ varent.var = (ast_expression*)fld;
+ varent.name = util_strdup(fld->name);
+ (void)!parser_t_fields_add(parser, varent);
- /* end with a semicolon */
- if (!parser_next(parser) || parser->tok != ';') {
- parseerror(parser, "semicolon expected");
- return false;
+ if (var->expression.vtype == TYPE_VECTOR)
+ {
+ /* create _x, _y and _z fields as well */
+ size_t len;
+ varentry_t vx, vy, vz;
+
+ len = strlen(varent.name);
+ vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
+ vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
+ vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
+ vx.name = (char*)mem_a(len+3);
+ vy.name = (char*)mem_a(len+3);
+ vz.name = (char*)mem_a(len+3);
+ memcpy(vx.name, varent.name, len);
+ memcpy(vy.name, varent.name, len);
+ memcpy(vz.name, varent.name, len);
+ vx.name[len] = vy.name[len] = vz.name[len] = '_';
+ vx.name[len+1] = 'x';
+ vy.name[len+1] = 'y';
+ vz.name[len+1] = 'z';
+ vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
+ (void)!parser_t_fields_add(parser, vx);
+ (void)!parser_t_fields_add(parser, vy);
+ (void)!parser_t_fields_add(parser, vz);
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected semicolon or another field name");
+ return false;
+ }
+ if (parser->tok == ';')
+ break;
+ if (parser->tok != ',' || !parser_next(parser)) {
+ parseerror(parser, "expected semicolon or another field name");
+ return false;
+ }
}
/* skip the semicolon */
if (!parser)
return false;
- memset(parser, 0, sizeof(parser));
-
- MEM_VECTOR_INIT(parser, globals);
- MEM_VECTOR_INIT(parser, locals);
+ memset(parser, 0, sizeof(*parser));
return true;
}
}
}
- ir_builder_dump(ir, printf);
+ if (opts_dump)
+ ir_builder_dump(ir, printf);
if (!ir_builder_generate(ir, output)) {
printf("*** failed to generate output file\n");
projects / xonotic / gmqcc.git / blobdiff