return true;
}
+static size_t ast_type_to_string_impl(ast_expression *e, char *buf, size_t bufsize, size_t pos)
+{
+ const char *typestr;
+ size_t typelen;
+ size_t i;
+
+ if (!e) {
+ if (pos + 6 >= bufsize)
+ goto full;
+ strcpy(buf + pos, "(null)");
+ return pos + 6;
+ }
+
+ if (pos + 1 >= bufsize)
+ goto full;
+
+ switch (e->expression.vtype) {
+ case TYPE_VARIANT:
+ strcpy(buf + pos, "(variant)");
+ return pos + 9;
+
+ case TYPE_FIELD:
+ buf[pos++] = '.';
+ return ast_type_to_string_impl(e->expression.next, buf, bufsize, pos);
+
+ case TYPE_POINTER:
+ if (pos + 3 >= bufsize)
+ goto full;
+ buf[pos++] = '*';
+ buf[pos++] = '(';
+ pos = ast_type_to_string_impl(e->expression.next, buf, bufsize, pos);
+ if (pos + 1 >= bufsize)
+ goto full;
+ buf[pos++] = ')';
+ return pos;
+
+ case TYPE_FUNCTION:
+ pos = ast_type_to_string_impl(e->expression.next, buf, bufsize, pos);
+ if (pos + 2 >= bufsize)
+ goto full;
+ if (e->expression.params_count == 0) {
+ buf[pos++] = '(';
+ buf[pos++] = ')';
+ return pos;
+ }
+ buf[pos++] = '(';
+ pos = ast_type_to_string_impl((ast_expression*)(e->expression.params[0]), buf, bufsize, pos);
+ for (i = 1; i < e->expression.params_count; ++i) {
+ if (pos + 2 >= bufsize)
+ goto full;
+ buf[pos++] = ',';
+ buf[pos++] = ' ';
+ pos = ast_type_to_string_impl((ast_expression*)(e->expression.params[i]), buf, bufsize, pos);
+ }
+ if (pos + 1 >= bufsize)
+ goto full;
+ buf[pos++] = ')';
+ return pos;
+
+ default:
+ typestr = type_name[e->expression.vtype];
+ typelen = strlen(typestr);
+ if (pos + typelen >= bufsize)
+ goto full;
+ strcpy(buf + pos, typestr);
+ return pos + typelen;
+ }
+
+full:
+ buf[bufsize-3] = '.';
+ buf[bufsize-2] = '.';
+ buf[bufsize-1] = '.';
+ return bufsize;
+}
+
+void ast_type_to_string(ast_expression *e, char *buf, size_t bufsize)
+{
+ size_t pos = ast_type_to_string_impl(e, buf, bufsize-1, 0);
+ buf[pos] = 0;
+}
+
ast_value* ast_value_new(lex_ctx ctx, const char *name, int t)
{
ast_instantiate(ast_value, ctx, ast_value_delete);
self->uses = 0;
memset(&self->constval, 0, sizeof(self->constval));
- self->ir_v = NULL;
+ self->ir_v = NULL;
+ self->ir_values = NULL;
+ self->ir_value_count = 0;
return self;
}
{
size_t i;
bool retval = true;
- const ast_expression *func = self->func;
+ const ast_expression *func = self->func;
+ size_t count = self->params_count;
+ if (count > func->expression.params_count)
+ count = func->expression.params_count;
- for (i = 0; i < self->params_count; ++i) {
+ for (i = 0; i < count; ++i) {
if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) {
asterror(ast_ctx(self), "invalid type for parameter %u in function call",
(unsigned int)(i+1));
self->dest = dest;
self->source = source;
+ self->expression.vtype = dest->expression.vtype;
+ if (dest->expression.next) {
+ self->expression.next = ast_type_copy(ctx, dest);
+ if (!self->expression.next) {
+ ast_delete(self);
+ return NULL;
+ }
+ }
+ else
+ self->expression.next = NULL;
+
return self;
}
return true;
}
-bool ast_global_codegen(ast_value *self, ir_builder *ir)
+bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield)
{
ir_value *v = NULL;
if (self->isconst && self->expression.vtype == TYPE_FUNCTION)
return true;
}
- if (self->expression.vtype == TYPE_FIELD) {
+ if (isfield && self->expression.vtype == TYPE_FIELD) {
v = ir_builder_create_field(ir, self->name, self->expression.next->expression.vtype);
if (!v)
return false;
asterror(ast_ctx(self), "ir_builder_create_global failed");
return false;
}
+ if (self->expression.vtype == TYPE_FIELD)
+ v->fieldtype = self->expression.next->expression.vtype;
v->context = ast_ctx(self);
if (self->isconst) {
v = ir_function_create_local(func, self->name, self->expression.vtype, param);
if (!v)
return false;
+ if (self->expression.vtype == TYPE_FIELD)
+ v->fieldtype = self->expression.next->expression.vtype;
v->context = ast_ctx(self);
/* A constant local... hmmm...
* Note: an ast-representation using the comma-operator
* of the form: (a, b, c) = x should not assign to c...
*/
- (void)lvalue;
+ if (lvalue) {
+ asterror(ast_ctx(self), "not an l-value (code-block)");
+ return false;
+ }
+
if (self->expression.outr) {
*out = self->expression.outr;
return true;
ast_expression_codegen *cgen;
ir_value *left, *right;
- /* In the context of a binary operation, we can disregard
- * the lvalue flag.
- */
- (void)lvalue;
+ /* A binary operation cannot yield an l-value */
+ if (lvalue) {
+ asterror(ast_ctx(self), "not an l-value (binop)");
+ return false;
+ }
+
if (self->expression.outr) {
*out = self->expression.outr;
return true;
ast_expression_codegen *cgen;
ir_value *operand;
- /* In the context of a unary operation, we can disregard
- * the lvalue flag.
- */
- (void)lvalue;
+ /* An unary operation cannot yield an l-value */
+ if (lvalue) {
+ asterror(ast_ctx(self), "not an l-value (binop)");
+ return false;
+ }
+
if (self->expression.outr) {
*out = self->expression.outr;
return true;
ast_expression_codegen *cgen;
ir_value *operand;
- /* In the context of a return operation, we can disregard
- * the lvalue flag.
+ /* In the context of a return operation, we don't actually return
+ * anything...
*/
- (void)lvalue;
+ if (lvalue) {
+ asterror(ast_ctx(self), "return-expression is not an l-value");
+ return false;
+ }
+
if (self->expression.outr) {
asterror(ast_ctx(self), "internal error: ast_return cannot be reused, it bears no result!");
return false;
ir_block *cond = func->curblock;
ir_block *ontrue;
ir_block *onfalse;
- ir_block *ontrue_endblock;
- ir_block *onfalse_endblock;
+ ir_block *ontrue_endblock = NULL;
+ ir_block *onfalse_endblock = NULL;
ir_block *merge;
/* We don't output any value, thus also don't care about r/lvalue */
ir_value *funval = NULL;
/* return values are never lvalues */
- (void)lvalue;
+ if (lvalue) {
+ asterror(ast_ctx(self), "not an l-value (function call)");
+ return false;
+ }
if (self->expression.outr) {
*out = self->expression.outr;
projects / xonotic / gmqcc.git / blobdiff