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;
+
+ case TYPE_ARRAY:
+ pos = ast_type_to_string_impl(e->expression.next, buf, bufsize, pos);
+ if (pos + 1 >= bufsize)
+ goto full;
+ buf[pos++] = '[';
+ pos += snprintf(buf + pos, bufsize - pos - 1, "%i", (int)e->expression.count);
+ 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;
}
break;
}
}
+ if (self->ir_values)
+ mem_d(self->ir_values);
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
mem_d(self);
}
+ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_expression *index)
+{
+ const ast_expression *outtype;
+ ast_instantiate(ast_array_index, ctx, ast_array_index_delete);
+
+ outtype = array->expression.next;
+ if (!outtype) {
+ mem_d(self);
+ /* Error: field has no type... */
+ return NULL;
+ }
+
+ ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_array_index_codegen);
+
+ self->array = array;
+ self->index = index;
+
+ if (!ast_type_adopt(self, outtype)) {
+ ast_array_index_delete(self);
+ return NULL;
+ }
+
+ return self;
+}
+
+void ast_array_index_delete(ast_array_index *self)
+{
+ ast_unref(self->array);
+ ast_unref(self->index);
+ ast_expression_delete((ast_expression*)self);
+ mem_d(self);
+}
+
ast_ifthen* ast_ifthen_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse)
{
ast_instantiate(ast_ifthen, ctx, ast_ifthen_delete);
{
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;
return true;
}
- v = ir_builder_create_global(ir, self->name, self->expression.vtype);
- if (!v) {
- asterror(ast_ctx(self), "ir_builder_create_global failed");
- return false;
+ if (self->expression.vtype == TYPE_ARRAY) {
+ size_t ai;
+ char *name;
+ size_t namelen;
+
+ ast_expression_common *elemtype = &self->expression.next->expression;
+ int vtype = elemtype->vtype;
+ /* we are lame now - considering the way QC works we won't tolerate arrays > 1024 elements */
+ if (!self->expression.count || self->expression.count > opts_max_array_size) {
+ asterror(ast_ctx(self), "Invalid array of size %lu", (unsigned long)self->expression.count);
+ }
+
+ self->ir_values = (ir_value**)mem_a(sizeof(self->ir_values[0]) * self->expression.count);
+ if (!self->ir_values) {
+ asterror(ast_ctx(self), "failed to allocate array values");
+ return false;
+ }
+
+ v = ir_builder_create_global(ir, self->name, vtype);
+ if (!v) {
+ asterror(ast_ctx(self), "ir_builder_create_global failed");
+ return false;
+ }
+ if (vtype == TYPE_FIELD)
+ v->fieldtype = elemtype->next->expression.vtype;
+ v->context = ast_ctx(self);
+
+ namelen = strlen(self->name);
+ name = (char*)mem_a(namelen + 16);
+ strcpy(name, self->name);
+
+ self->ir_values[0] = v;
+ for (ai = 1; ai < self->expression.count; ++ai) {
+ snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
+ self->ir_values[ai] = ir_builder_create_global(ir, name, vtype);
+ if (!self->ir_values[ai]) {
+ asterror(ast_ctx(self), "ir_builder_create_global failed");
+ return false;
+ }
+ if (vtype == TYPE_FIELD)
+ self->ir_values[ai]->fieldtype = elemtype->next->expression.vtype;
+ self->ir_values[ai]->context = ast_ctx(self);
+ }
+ }
+ else
+ {
+ /* Arrays don't do this since there's no "array" value which spans across the
+ * whole thing.
+ */
+ v = ir_builder_create_global(ir, self->name, self->expression.vtype);
+ if (!v) {
+ 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);
}
- v->context = ast_ctx(self);
if (self->isconst) {
switch (self->expression.vtype)
if (!ir_value_set_string(v, self->constval.vstring))
goto error;
break;
+ case TYPE_ARRAY:
+ asterror(ast_ctx(self), "TODO: global constant array");
+ break;
case TYPE_FUNCTION:
asterror(ast_ctx(self), "global of type function not properly generated");
goto error;
return false;
}
+ if (self->expression.vtype == TYPE_ARRAY)
+ {
+ asterror(ast_ctx(self), "TODO: ast_local_codgen for TYPE_ARRAY");
+ return false;
+ }
+
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;
return (*out != NULL);
}
+bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lvalue, ir_value **out)
+{
+ ast_value *arr;
+ ast_value *idx;
+
+ if (!ast_istype(self->array, ast_value)) {
+ asterror(ast_ctx(self), "array indexing this way is not supported");
+ return false;
+ }
+
+ if (!ast_istype(self->index, ast_value)) {
+ if (lvalue) {
+ asterror(ast_ctx(self), "array indexing here needs a compile-time constant");
+ return false;
+ } else {
+ /* Time to use accessor functions */
+ /*
+ ast_expression_codegen *cgen;
+ ir_value *iridx;
+ */
+ }
+ }
+
+ arr = (ast_value*)self->array;
+ idx = (ast_value*)self->index;
+
+ if (!idx->isconst) {
+ asterror(ast_ctx(self), "(.2) array indexing here needs a compile-time constant");
+ return false;
+ }
+
+ if (idx->expression.vtype == TYPE_FLOAT)
+ *out = arr->ir_values[(int)idx->constval.vfloat];
+ else if (idx->expression.vtype == TYPE_INTEGER)
+ *out = arr->ir_values[idx->constval.vint];
+ else {
+ asterror(ast_ctx(self), "array indexing here needs an integer constant");
+ return false;
+ }
+ return true;
+}
+
bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_value **out)
{
ast_expression_codegen *cgen;
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