/*
- * Copyright (C) 2012
+ * Copyright (C) 2012, 2013
* Wolfgang Bumiller
+ * Dale Weiler
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
-#include <stdio.h>
#include <stdlib.h>
#include <string.h>
return NULL; \
} \
ast_node_init((ast_node*)self, ctx, TYPE_##T); \
- ( (ast_node*)self )->node.destroy = (ast_node_delete*)destroyfn
+ ( (ast_node*)self )->destroy = (ast_node_delete*)destroyfn
-/* error handling */
-static void asterror(lex_ctx ctx, const char *msg, ...)
-{
- va_list ap;
- va_start(ap, msg);
- con_cvprintmsg((void*)&ctx, LVL_ERROR, "error", msg, ap);
- va_end(ap);
-}
+/*
+ * forward declarations, these need not be in ast.h for obvious
+ * static reasons.
+ */
+static bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**);
+static void ast_array_index_delete(ast_array_index*);
+static bool ast_array_index_codegen(ast_array_index*, ast_function*, bool lvalue, ir_value**);
+static void ast_argpipe_delete(ast_argpipe*);
+static bool ast_argpipe_codegen(ast_argpipe*, ast_function*, bool lvalue, ir_value**);
+static void ast_store_delete(ast_store*);
+static bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**);
+static void ast_ifthen_delete(ast_ifthen*);
+static bool ast_ifthen_codegen(ast_ifthen*, ast_function*, bool lvalue, ir_value**);
+static void ast_ternary_delete(ast_ternary*);
+static bool ast_ternary_codegen(ast_ternary*, ast_function*, bool lvalue, ir_value**);
+static void ast_loop_delete(ast_loop*);
+static bool ast_loop_codegen(ast_loop*, ast_function*, bool lvalue, ir_value**);
+static void ast_breakcont_delete(ast_breakcont*);
+static bool ast_breakcont_codegen(ast_breakcont*, ast_function*, bool lvalue, ir_value**);
+static void ast_switch_delete(ast_switch*);
+static bool ast_switch_codegen(ast_switch*, ast_function*, bool lvalue, ir_value**);
+static void ast_label_delete(ast_label*);
+static void ast_label_register_goto(ast_label*, ast_goto*);
+static bool ast_label_codegen(ast_label*, ast_function*, bool lvalue, ir_value**);
+static bool ast_goto_codegen(ast_goto*, ast_function*, bool lvalue, ir_value**);
+static void ast_goto_delete(ast_goto*);
+static void ast_call_delete(ast_call*);
+static bool ast_call_codegen(ast_call*, ast_function*, bool lvalue, ir_value**);
+static bool ast_block_codegen(ast_block*, ast_function*, bool lvalue, ir_value**);
+static void ast_unary_delete(ast_unary*);
+static bool ast_unary_codegen(ast_unary*, ast_function*, bool lvalue, ir_value**);
+static void ast_entfield_delete(ast_entfield*);
+static bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**);
+static void ast_return_delete(ast_return*);
+static bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**);
+static void ast_binstore_delete(ast_binstore*);
+static bool ast_binstore_codegen(ast_binstore*, ast_function*, bool lvalue, ir_value**);
+static void ast_binary_delete(ast_binary*);
+static bool ast_binary_codegen(ast_binary*, ast_function*, bool lvalue, ir_value**);
/* It must not be possible to get here. */
static GMQCC_NORETURN void _ast_node_destroy(ast_node *self)
{
+ (void)self;
con_err("ast node missing destroy()\n");
- abort();
+ exit(EXIT_FAILURE);
}
/* Initialize main ast node aprts */
static void ast_node_init(ast_node *self, lex_ctx ctx, int nodetype)
{
- self->node.context = ctx;
- self->node.destroy = &_ast_node_destroy;
- self->node.keep = false;
- self->node.nodetype = nodetype;
+ self->context = ctx;
+ self->destroy = &_ast_node_destroy;
+ self->keep = false;
+ self->nodetype = nodetype;
+ self->side_effects = false;
}
+/* weight and side effects */
+static void _ast_propagate_effects(ast_node *self, ast_node *other)
+{
+ if (ast_side_effects(other))
+ ast_side_effects(self) = true;
+}
+#define ast_propagate_effects(s,o) _ast_propagate_effects(((ast_node*)(s)), ((ast_node*)(o)))
+
/* General expression initialization */
static void ast_expression_init(ast_expression *self,
ast_expression_codegen *codegen)
{
- self->expression.codegen = codegen;
- self->expression.vtype = TYPE_VOID;
- self->expression.next = NULL;
- self->expression.outl = NULL;
- self->expression.outr = NULL;
- self->expression.variadic = false;
- self->expression.params = NULL;
+ self->codegen = codegen;
+ self->vtype = TYPE_VOID;
+ self->next = NULL;
+ self->outl = NULL;
+ self->outr = NULL;
+ self->params = NULL;
+ self->count = 0;
+ self->flags = 0;
+ self->varparam = NULL;
}
static void ast_expression_delete(ast_expression *self)
{
size_t i;
- if (self->expression.next)
- ast_delete(self->expression.next);
- for (i = 0; i < vec_size(self->expression.params); ++i) {
- ast_delete(self->expression.params[i]);
+ if (self->next)
+ ast_delete(self->next);
+ for (i = 0; i < vec_size(self->params); ++i) {
+ ast_delete(self->params[i]);
}
- vec_free(self->expression.params);
+ vec_free(self->params);
+ if (self->varparam)
+ ast_delete(self->varparam);
}
static void ast_expression_delete_full(ast_expression *self)
ast_value* ast_value_copy(const ast_value *self)
{
size_t i;
- const ast_expression_common *fromex;
- ast_expression_common *selfex;
+ const ast_expression *fromex;
+ ast_expression *selfex;
ast_value *cp = ast_value_new(self->expression.node.context, self->name, self->expression.vtype);
if (self->expression.next) {
cp->expression.next = ast_type_copy(self->expression.node.context, self->expression.next);
- if (!cp->expression.next) {
- ast_value_delete(cp);
- return NULL;
- }
}
fromex = &self->expression;
selfex = &cp->expression;
- selfex->variadic = fromex->variadic;
+ selfex->count = fromex->count;
+ selfex->flags = fromex->flags;
for (i = 0; i < vec_size(fromex->params); ++i) {
ast_value *v = ast_value_copy(fromex->params[i]);
- if (!v) {
- ast_value_delete(cp);
- return NULL;
- }
vec_push(selfex->params, v);
}
return cp;
}
-bool ast_type_adopt_impl(ast_expression *self, const ast_expression *other)
+void ast_type_adopt_impl(ast_expression *self, const ast_expression *other)
{
size_t i;
- const ast_expression_common *fromex;
- ast_expression_common *selfex;
- self->expression.vtype = other->expression.vtype;
- if (other->expression.next) {
- self->expression.next = (ast_expression*)ast_type_copy(ast_ctx(self), other->expression.next);
- if (!self->expression.next)
- return false;
- }
- fromex = &other->expression;
- selfex = &self->expression;
- selfex->variadic = fromex->variadic;
+ const ast_expression *fromex;
+ ast_expression *selfex;
+ self->vtype = other->vtype;
+ if (other->next) {
+ self->next = (ast_expression*)ast_type_copy(ast_ctx(self), other->next);
+ }
+ fromex = other;
+ selfex = self;
+ selfex->count = fromex->count;
+ selfex->flags = fromex->flags;
for (i = 0; i < vec_size(fromex->params); ++i) {
ast_value *v = ast_value_copy(fromex->params[i]);
- if (!v)
- return false;
vec_push(selfex->params, v);
}
- return true;
}
static ast_expression* ast_shallow_type(lex_ctx ctx, int vtype)
{
ast_instantiate(ast_expression, ctx, ast_expression_delete_full);
ast_expression_init(self, NULL);
- self->expression.codegen = NULL;
- self->expression.next = NULL;
- self->expression.vtype = vtype;
+ self->codegen = NULL;
+ self->next = NULL;
+ self->vtype = vtype;
return self;
}
ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex)
{
size_t i;
- const ast_expression_common *fromex;
- ast_expression_common *selfex;
+ const ast_expression *fromex;
+ ast_expression *selfex;
if (!ex)
return NULL;
ast_instantiate(ast_expression, ctx, ast_expression_delete_full);
ast_expression_init(self, NULL);
- fromex = &ex->expression;
- selfex = &self->expression;
+ fromex = ex;
+ selfex = self;
/* This may never be codegen()d */
selfex->codegen = NULL;
selfex->vtype = fromex->vtype;
if (fromex->next)
- {
selfex->next = ast_type_copy(ctx, fromex->next);
- if (!selfex->next) {
- ast_expression_delete_full(self);
- return NULL;
- }
- }
else
selfex->next = NULL;
- selfex->variadic = fromex->variadic;
+ selfex->count = fromex->count;
+ selfex->flags = fromex->flags;
for (i = 0; i < vec_size(fromex->params); ++i) {
ast_value *v = ast_value_copy(fromex->params[i]);
- if (!v) {
- ast_expression_delete_full(self);
- return NULL;
- }
vec_push(selfex->params, v);
}
bool ast_compare_type(ast_expression *a, ast_expression *b)
{
- if (a->expression.vtype != b->expression.vtype)
+ if (a->vtype == TYPE_NIL ||
+ b->vtype == TYPE_NIL)
+ return true;
+ if (a->vtype != b->vtype)
return false;
- if (!a->expression.next != !b->expression.next)
+ if (!a->next != !b->next)
return false;
- if (vec_size(a->expression.params) != vec_size(b->expression.params))
+ if (vec_size(a->params) != vec_size(b->params))
return false;
- if (a->expression.variadic != b->expression.variadic)
+ if ((a->flags & AST_FLAG_TYPE_MASK) !=
+ (b->flags & AST_FLAG_TYPE_MASK) )
+ {
return false;
- if (vec_size(a->expression.params)) {
+ }
+ if (vec_size(a->params)) {
size_t i;
- for (i = 0; i < vec_size(a->expression.params); ++i) {
- if (!ast_compare_type((ast_expression*)a->expression.params[i],
- (ast_expression*)b->expression.params[i]))
+ for (i = 0; i < vec_size(a->params); ++i) {
+ if (!ast_compare_type((ast_expression*)a->params[i],
+ (ast_expression*)b->params[i]))
return false;
}
}
- if (a->expression.next)
- return ast_compare_type(a->expression.next, b->expression.next);
+ if (a->next)
+ return ast_compare_type(a->next, b->next);
return true;
}
if (!e) {
if (pos + 6 >= bufsize)
goto full;
- strcpy(buf + pos, "(null)");
+ util_strncpy(buf + pos, "(null)", 6);
return pos + 6;
}
if (pos + 1 >= bufsize)
goto full;
- switch (e->expression.vtype) {
+ switch (e->vtype) {
case TYPE_VARIANT:
- strcpy(buf + pos, "(variant)");
+ util_strncpy(buf + pos, "(variant)", 9);
return pos + 9;
case TYPE_FIELD:
buf[pos++] = '.';
- return ast_type_to_string_impl(e->expression.next, buf, bufsize, pos);
+ return ast_type_to_string_impl(e->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);
+ pos = ast_type_to_string_impl(e->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);
+ pos = ast_type_to_string_impl(e->next, buf, bufsize, pos);
if (pos + 2 >= bufsize)
goto full;
- if (!vec_size(e->expression.params)) {
+ if (!vec_size(e->params)) {
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 < vec_size(e->expression.params); ++i) {
+ pos = ast_type_to_string_impl((ast_expression*)(e->params[0]), buf, bufsize, pos);
+ for (i = 1; i < vec_size(e->params); ++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);
+ pos = ast_type_to_string_impl((ast_expression*)(e->params[i]), buf, bufsize, pos);
}
if (pos + 1 >= bufsize)
goto full;
return pos;
case TYPE_ARRAY:
- pos = ast_type_to_string_impl(e->expression.next, buf, bufsize, pos);
+ pos = ast_type_to_string_impl(e->next, buf, bufsize, pos);
if (pos + 1 >= bufsize)
goto full;
buf[pos++] = '[';
- pos += snprintf(buf + pos, bufsize - pos - 1, "%i", (int)e->expression.count);
+ pos += util_snprintf(buf + pos, bufsize - pos - 1, "%i", (int)e->count);
if (pos + 1 >= bufsize)
goto full;
buf[pos++] = ']';
return pos;
default:
- typestr = type_name[e->expression.vtype];
+ typestr = type_name[e->vtype];
typelen = strlen(typestr);
if (pos + typelen >= bufsize)
goto full;
- strcpy(buf + pos, typestr);
+ util_strncpy(buf + pos, typestr, typelen);
return pos + typelen;
}
buf[pos] = 0;
}
+static bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_value **out);
ast_value* ast_value_new(lex_ctx ctx, const char *name, int t)
{
ast_instantiate(ast_value, ctx, ast_value_delete);
self->name = name ? util_strdup(name) : NULL;
self->expression.vtype = t;
self->expression.next = NULL;
- self->isconst = false;
- self->uses = 0;
+ self->isfield = false;
+ self->cvq = CV_NONE;
+ self->hasvalue = false;
+ self->isimm = false;
+ self->uses = 0;
memset(&self->constval, 0, sizeof(self->constval));
+ self->initlist = NULL;
self->ir_v = NULL;
self->ir_values = NULL;
self->setter = NULL;
self->getter = NULL;
+ self->desc = NULL;
+
+ self->argcounter = NULL;
return self;
}
{
if (self->name)
mem_d((void*)self->name);
- if (self->isconst) {
+ if (self->argcounter)
+ mem_d((void*)self->argcounter);
+ if (self->hasvalue) {
switch (self->expression.vtype)
{
case TYPE_STRING:
}
if (self->ir_values)
mem_d(self->ir_values);
+
+ if (self->desc)
+ mem_d(self->desc);
+
+ if (self->initlist) {
+ if (self->expression.next->vtype == TYPE_STRING) {
+ /* strings are allocated, free them */
+ size_t i, len = vec_size(self->initlist);
+ /* in theory, len should be expression.count
+ * but let's not take any chances */
+ for (i = 0; i < len; ++i) {
+ if (self->initlist[i].vstring)
+ mem_d(self->initlist[i].vstring);
+ }
+ }
+ vec_free(self->initlist);
+ }
+
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
self->left = left;
self->right = right;
+ ast_propagate_effects(self, left);
+ ast_propagate_effects(self, right);
+
if (op >= INSTR_EQ_F && op <= INSTR_GT)
self->expression.vtype = TYPE_FLOAT;
- else if (op == INSTR_AND || op == INSTR_OR ||
- op == INSTR_BITAND || op == INSTR_BITOR)
+ else if (op == INSTR_AND || op == INSTR_OR) {
+ if (OPTS_FLAG(PERL_LOGIC))
+ ast_type_adopt(self, right);
+ else
+ self->expression.vtype = TYPE_FLOAT;
+ }
+ else if (op == INSTR_BITAND || op == INSTR_BITOR)
self->expression.vtype = TYPE_FLOAT;
else if (op == INSTR_MUL_VF || op == INSTR_MUL_FV)
self->expression.vtype = TYPE_VECTOR;
else if (op == INSTR_MUL_V)
self->expression.vtype = TYPE_FLOAT;
else
- self->expression.vtype = left->expression.vtype;
+ self->expression.vtype = left->vtype;
+
+ /* references all */
+ self->refs = AST_REF_ALL;
return self;
}
void ast_binary_delete(ast_binary *self)
{
- ast_unref(self->left);
- ast_unref(self->right);
+ if (self->refs & AST_REF_LEFT) ast_unref(self->left);
+ if (self->refs & AST_REF_RIGHT) ast_unref(self->right);
+
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
ast_instantiate(ast_binstore, ctx, ast_binstore_delete);
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_binstore_codegen);
+ ast_side_effects(self) = true;
+
self->opstore = storop;
self->opbin = op;
self->dest = left;
self->source = right;
- self->expression.vtype = left->expression.vtype;
- if (left->expression.next) {
- self->expression.next = ast_type_copy(ctx, left);
- if (!self->expression.next) {
- ast_delete(self);
- return NULL;
- }
- }
- else
- self->expression.next = NULL;
+ self->keep_dest = false;
+ ast_type_adopt(self, left);
return self;
}
void ast_binstore_delete(ast_binstore *self)
{
- ast_unref(self->dest);
+ if (!self->keep_dest)
+ ast_unref(self->dest);
ast_unref(self->source);
ast_expression_delete((ast_expression*)self);
mem_d(self);
self->op = op;
self->operand = expr;
+ ast_propagate_effects(self, expr);
+
if (op >= INSTR_NOT_F && op <= INSTR_NOT_FNC) {
self->expression.vtype = TYPE_FLOAT;
} else
- asterror(ctx, "cannot determine type of unary operation %s", asm_instr[op].m);
+ compile_error(ctx, "cannot determine type of unary operation %s", asm_instr[op].m);
return self;
}
void ast_unary_delete(ast_unary *self)
{
- ast_unref(self->operand);
+ if (self->operand) ast_unref(self->operand);
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
self->operand = expr;
+ if (expr)
+ ast_propagate_effects(self, expr);
+
return self;
}
ast_entfield* ast_entfield_new(lex_ctx ctx, ast_expression *entity, ast_expression *field)
{
- if (field->expression.vtype != TYPE_FIELD) {
- asterror(ctx, "ast_entfield_new with expression not of type field");
+ if (field->vtype != TYPE_FIELD) {
+ compile_error(ctx, "ast_entfield_new with expression not of type field");
return NULL;
}
- return ast_entfield_new_force(ctx, entity, field, field->expression.next);
+ return ast_entfield_new_force(ctx, entity, field, field->next);
}
ast_entfield* ast_entfield_new_force(lex_ctx ctx, ast_expression *entity, ast_expression *field, const ast_expression *outtype)
self->entity = entity;
self->field = field;
+ ast_propagate_effects(self, entity);
+ ast_propagate_effects(self, field);
- if (!ast_type_adopt(self, outtype)) {
- ast_entfield_delete(self);
- return NULL;
- }
-
+ ast_type_adopt(self, outtype);
return self;
}
mem_d(self);
}
-ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field)
+ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field, const char *name)
{
ast_instantiate(ast_member, ctx, ast_member_delete);
if (field >= 3) {
return NULL;
}
- if (owner->expression.vtype != TYPE_VECTOR &&
- owner->expression.vtype != TYPE_FIELD) {
- asterror(ctx, "member-access on an invalid owner of type %s", type_name[owner->expression.vtype]);
+ if (owner->vtype != TYPE_VECTOR &&
+ owner->vtype != TYPE_FIELD) {
+ compile_error(ctx, "member-access on an invalid owner of type %s", type_name[owner->vtype]);
mem_d(self);
return NULL;
}
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_member_codegen);
self->expression.node.keep = true; /* keep */
- if (owner->expression.vtype == TYPE_VECTOR) {
+ if (owner->vtype == TYPE_VECTOR) {
self->expression.vtype = TYPE_FLOAT;
self->expression.next = NULL;
} else {
self->expression.next = ast_shallow_type(ctx, TYPE_FLOAT);
}
- self->owner = owner;
+ self->rvalue = false;
+ self->owner = owner;
+ ast_propagate_effects(self, owner);
+
self->field = field;
+ if (name)
+ self->name = util_strdup(name);
+ else
+ self->name = NULL;
return self;
}
* purpose that is not garbage-collected.
*/
ast_expression_delete((ast_expression*)self);
+ mem_d(self->name);
mem_d(self);
}
+bool ast_member_set_name(ast_member *self, const char *name)
+{
+ if (self->name)
+ mem_d((void*)self->name);
+ self->name = util_strdup(name);
+ return !!self->name;
+}
+
ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_expression *index)
{
ast_expression *outtype;
ast_instantiate(ast_array_index, ctx, ast_array_index_delete);
- outtype = array->expression.next;
+ outtype = array->next;
if (!outtype) {
mem_d(self);
/* Error: field has no type... */
self->array = array;
self->index = index;
+ ast_propagate_effects(self, array);
+ ast_propagate_effects(self, index);
- if (!ast_type_adopt(self, outtype)) {
- ast_array_index_delete(self);
- return NULL;
- }
- if (array->expression.vtype == TYPE_FIELD && outtype->expression.vtype == TYPE_ARRAY) {
+ ast_type_adopt(self, outtype);
+ if (array->vtype == TYPE_FIELD && outtype->vtype == TYPE_ARRAY) {
if (self->expression.vtype != TYPE_ARRAY) {
- asterror(ast_ctx(self), "array_index node on type");
+ compile_error(ast_ctx(self), "array_index node on type");
ast_array_index_delete(self);
return NULL;
}
void ast_array_index_delete(ast_array_index *self)
{
- ast_unref(self->array);
- ast_unref(self->index);
+ if (self->array)
+ ast_unref(self->array);
+ if (self->index)
+ ast_unref(self->index);
+ ast_expression_delete((ast_expression*)self);
+ mem_d(self);
+}
+
+ast_argpipe* ast_argpipe_new(lex_ctx ctx, ast_expression *index)
+{
+ ast_instantiate(ast_argpipe, ctx, ast_argpipe_delete);
+ ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_argpipe_codegen);
+ self->index = index;
+ self->expression.vtype = TYPE_NOEXPR;
+ return self;
+}
+
+void ast_argpipe_delete(ast_argpipe *self)
+{
+ if (self->index)
+ ast_unref(self->index);
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
self->cond = cond;
self->on_true = ontrue;
self->on_false = onfalse;
+ ast_propagate_effects(self, cond);
+ if (ontrue)
+ ast_propagate_effects(self, ontrue);
+ if (onfalse)
+ ast_propagate_effects(self, onfalse);
return self;
}
ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse)
{
+ ast_expression *exprtype = ontrue;
ast_instantiate(ast_ternary, ctx, ast_ternary_delete);
/* This time NEITHER must be NULL */
if (!ontrue || !onfalse) {
self->cond = cond;
self->on_true = ontrue;
self->on_false = onfalse;
+ ast_propagate_effects(self, cond);
+ ast_propagate_effects(self, ontrue);
+ ast_propagate_effects(self, onfalse);
- if (!ast_type_adopt(self, ontrue)) {
- ast_ternary_delete(self);
- return NULL;
- }
+ if (ontrue->vtype == TYPE_NIL)
+ exprtype = onfalse;
+ ast_type_adopt(self, exprtype);
return self;
}
void ast_ternary_delete(ast_ternary *self)
{
- ast_unref(self->cond);
- ast_unref(self->on_true);
- ast_unref(self->on_false);
+ /* the if()s are only there because computed-gotos can set them
+ * to NULL
+ */
+ if (self->cond) ast_unref(self->cond);
+ if (self->on_true) ast_unref(self->on_true);
+ if (self->on_false) ast_unref(self->on_false);
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
ast_loop* ast_loop_new(lex_ctx ctx,
ast_expression *initexpr,
- ast_expression *precond,
- ast_expression *postcond,
+ ast_expression *precond, bool pre_not,
+ ast_expression *postcond, bool post_not,
ast_expression *increment,
ast_expression *body)
{
self->increment = increment;
self->body = body;
+ self->pre_not = pre_not;
+ self->post_not = post_not;
+
+ if (initexpr)
+ ast_propagate_effects(self, initexpr);
+ if (precond)
+ ast_propagate_effects(self, precond);
+ if (postcond)
+ ast_propagate_effects(self, postcond);
+ if (increment)
+ ast_propagate_effects(self, increment);
+ if (body)
+ ast_propagate_effects(self, body);
+
return self;
}
mem_d(self);
}
-ast_breakcont* ast_breakcont_new(lex_ctx ctx, bool iscont)
+ast_breakcont* ast_breakcont_new(lex_ctx ctx, bool iscont, unsigned int levels)
{
ast_instantiate(ast_breakcont, ctx, ast_breakcont_delete);
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_breakcont_codegen);
self->is_continue = iscont;
+ self->levels = levels;
return self;
}
self->operand = op;
self->cases = NULL;
+ ast_propagate_effects(self, op);
+
return self;
}
mem_d(self);
}
+ast_label* ast_label_new(lex_ctx ctx, const char *name, bool undefined)
+{
+ ast_instantiate(ast_label, ctx, ast_label_delete);
+ ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_label_codegen);
+
+ self->expression.vtype = TYPE_NOEXPR;
+
+ self->name = util_strdup(name);
+ self->irblock = NULL;
+ self->gotos = NULL;
+ self->undefined = undefined;
+
+ return self;
+}
+
+void ast_label_delete(ast_label *self)
+{
+ mem_d((void*)self->name);
+ vec_free(self->gotos);
+ ast_expression_delete((ast_expression*)self);
+ mem_d(self);
+}
+
+static void ast_label_register_goto(ast_label *self, ast_goto *g)
+{
+ vec_push(self->gotos, g);
+}
+
+ast_goto* ast_goto_new(lex_ctx ctx, const char *name)
+{
+ ast_instantiate(ast_goto, ctx, ast_goto_delete);
+ ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_goto_codegen);
+
+ self->name = util_strdup(name);
+ self->target = NULL;
+ self->irblock_from = NULL;
+
+ return self;
+}
+
+void ast_goto_delete(ast_goto *self)
+{
+ mem_d((void*)self->name);
+ ast_expression_delete((ast_expression*)self);
+ mem_d(self);
+}
+
+void ast_goto_set_label(ast_goto *self, ast_label *label)
+{
+ self->target = label;
+}
+
ast_call* ast_call_new(lex_ctx ctx,
ast_expression *funcexpr)
{
ast_instantiate(ast_call, ctx, ast_call_delete);
+ if (!funcexpr->next) {
+ compile_error(ctx, "not a function");
+ mem_d(self);
+ return NULL;
+ }
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_call_codegen);
- self->params = NULL;
- self->func = funcexpr;
+ ast_side_effects(self) = true;
+
+ self->params = NULL;
+ self->func = funcexpr;
+ self->va_count = NULL;
- self->expression.vtype = funcexpr->expression.next->expression.vtype;
- if (funcexpr->expression.next->expression.next)
- self->expression.next = ast_type_copy(ctx, funcexpr->expression.next->expression.next);
+ ast_type_adopt(self, funcexpr->next);
return self;
}
if (self->func)
ast_unref(self->func);
+ if (self->va_count)
+ ast_unref(self->va_count);
+
ast_expression_delete((ast_expression*)self);
mem_d(self);
}
-bool ast_call_check_types(ast_call *self)
+static bool ast_call_check_vararg(ast_call *self, ast_expression *va_type, ast_expression *exp_type)
{
+ char texp[1024];
+ char tgot[1024];
+ if (!exp_type)
+ return true;
+ if (!va_type || !ast_compare_type(va_type, exp_type))
+ {
+ if (va_type && exp_type)
+ {
+ ast_type_to_string(va_type, tgot, sizeof(tgot));
+ ast_type_to_string(exp_type, texp, sizeof(texp));
+ if (OPTS_FLAG(UNSAFE_VARARGS)) {
+ if (compile_warning(ast_ctx(self), WARN_UNSAFE_TYPES,
+ "piped variadic argument differs in type: constrained to type %s, expected type %s",
+ tgot, texp))
+ return false;
+ } else {
+ compile_error(ast_ctx(self),
+ "piped variadic argument differs in type: constrained to type %s, expected type %s",
+ tgot, texp);
+ return false;
+ }
+ }
+ else
+ {
+ ast_type_to_string(exp_type, texp, sizeof(texp));
+ if (OPTS_FLAG(UNSAFE_VARARGS)) {
+ if (compile_warning(ast_ctx(self), WARN_UNSAFE_TYPES,
+ "piped variadic argument may differ in type: expected type %s",
+ texp))
+ return false;
+ } else {
+ compile_error(ast_ctx(self),
+ "piped variadic argument may differ in type: expected type %s",
+ texp);
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+bool ast_call_check_types(ast_call *self, ast_expression *va_type)
+{
+ char texp[1024];
+ char tgot[1024];
size_t i;
bool retval = true;
const ast_expression *func = self->func;
size_t count = vec_size(self->params);
- if (count > vec_size(func->expression.params))
- count = vec_size(func->expression.params);
+ if (count > vec_size(func->params))
+ count = vec_size(func->params);
for (i = 0; i < count; ++i) {
- if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) {
- char texp[1024];
- char tgot[1024];
+ if (ast_istype(self->params[i], ast_argpipe)) {
+ /* warn about type safety instead */
+ if (i+1 != count) {
+ compile_error(ast_ctx(self), "argpipe must be the last parameter to a function call");
+ return false;
+ }
+ if (!ast_call_check_vararg(self, va_type, (ast_expression*)func->params[i]))
+ retval = false;
+ }
+ else if (!ast_compare_type(self->params[i], (ast_expression*)(func->params[i])))
+ {
ast_type_to_string(self->params[i], tgot, sizeof(tgot));
- ast_type_to_string((ast_expression*)func->expression.params[i], texp, sizeof(texp));
- asterror(ast_ctx(self), "invalid type for parameter %u in function call: expected %s, got %s",
+ ast_type_to_string((ast_expression*)func->params[i], texp, sizeof(texp));
+ compile_error(ast_ctx(self), "invalid type for parameter %u in function call: expected %s, got %s",
(unsigned int)(i+1), texp, tgot);
/* we don't immediately return */
retval = false;
}
}
+ count = vec_size(self->params);
+ if (count > vec_size(func->params) && func->varparam) {
+ for (; i < count; ++i) {
+ if (ast_istype(self->params[i], ast_argpipe)) {
+ /* warn about type safety instead */
+ if (i+1 != count) {
+ compile_error(ast_ctx(self), "argpipe must be the last parameter to a function call");
+ return false;
+ }
+ if (!ast_call_check_vararg(self, va_type, func->varparam))
+ retval = false;
+ }
+ else if (!ast_compare_type(self->params[i], func->varparam))
+ {
+ ast_type_to_string(self->params[i], tgot, sizeof(tgot));
+ ast_type_to_string(func->varparam, texp, sizeof(texp));
+ compile_error(ast_ctx(self), "invalid type for variadic parameter %u in function call: expected %s, got %s",
+ (unsigned int)(i+1), texp, tgot);
+ /* we don't immediately return */
+ retval = false;
+ }
+ }
+ }
return retval;
}
ast_instantiate(ast_store, ctx, ast_store_delete);
ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_store_codegen);
+ ast_side_effects(self) = true;
+
self->op = op;
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;
+ ast_type_adopt(self, dest);
return self;
}
return self;
}
+bool ast_block_add_expr(ast_block *self, ast_expression *e)
+{
+ ast_propagate_effects(self, e);
+ vec_push(self->exprs, e);
+ if (self->expression.next) {
+ ast_delete(self->expression.next);
+ self->expression.next = NULL;
+ }
+ ast_type_adopt(self, e);
+ return true;
+}
+
void ast_block_collect(ast_block *self, ast_expression *expr)
{
vec_push(self->collect, expr);
- expr->expression.node.keep = true;
+ expr->node.keep = true;
}
void ast_block_delete(ast_block *self)
mem_d(self);
}
-bool ast_block_set_type(ast_block *self, ast_expression *from)
+void ast_block_set_type(ast_block *self, ast_expression *from)
{
if (self->expression.next)
ast_delete(self->expression.next);
- self->expression.vtype = from->expression.vtype;
- if (from->expression.next) {
- self->expression.next = ast_type_copy(self->expression.node.context, from->expression.next);
- if (!self->expression.next)
- return false;
- }
- else
- self->expression.next = NULL;
- return true;
+ ast_type_adopt(self, from);
}
ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype)
{
ast_instantiate(ast_function, ctx, ast_function_delete);
- if (!vtype ||
- vtype->isconst ||
- vtype->expression.vtype != TYPE_FUNCTION)
- {
- mem_d(self);
- return NULL;
+ if (!vtype) {
+ compile_error(ast_ctx(self), "internal error: ast_function_new condition 0");
+ goto cleanup;
+ } else if (vtype->hasvalue || vtype->expression.vtype != TYPE_FUNCTION) {
+ compile_error(ast_ctx(self), "internal error: ast_function_new condition %i %i type=%i (probably 2 bodies?)",
+ (int)!vtype,
+ (int)vtype->hasvalue,
+ vtype->expression.vtype);
+ goto cleanup;
}
self->vtype = vtype;
self->ir_func = NULL;
self->curblock = NULL;
- self->breakblock = NULL;
- self->continueblock = NULL;
+ self->breakblocks = NULL;
+ self->continueblocks = NULL;
- vtype->isconst = true;
+ vtype->hasvalue = true;
vtype->constval.vfunc = self;
+ self->varargs = NULL;
+ self->argc = NULL;
+ self->fixedparams = NULL;
+ self->return_value = NULL;
+
return self;
+
+cleanup:
+ mem_d(self);
+ return NULL;
}
void ast_function_delete(ast_function *self)
mem_d((void*)self->name);
if (self->vtype) {
/* ast_value_delete(self->vtype); */
- self->vtype->isconst = false;
+ self->vtype->hasvalue = false;
self->vtype->constval.vfunc = NULL;
/* We use unref - if it was stored in a global table it is supposed
* to be deleted from *there*
for (i = 0; i < vec_size(self->blocks); ++i)
ast_delete(self->blocks[i]);
vec_free(self->blocks);
+ vec_free(self->breakblocks);
+ vec_free(self->continueblocks);
+ if (self->varargs)
+ ast_delete(self->varargs);
+ if (self->argc)
+ ast_delete(self->argc);
+ if (self->fixedparams)
+ ast_unref(self->fixedparams);
+ if (self->return_value)
+ ast_unref(self->return_value);
mem_d(self);
}
-const char* ast_function_label(ast_function *self, const char *prefix)
+static const char* ast_function_label(ast_function *self, const char *prefix)
{
size_t id;
size_t len;
char *from;
- if (!opts_dump && !opts_dumpfin)
+ if (!OPTS_OPTION_BOOL(OPTION_DUMP) &&
+ !OPTS_OPTION_BOOL(OPTION_DUMPFIN) &&
+ !OPTS_OPTION_BOOL(OPTION_DEBUG))
+ {
return NULL;
+ }
id = (self->labelcount++);
len = strlen(prefix);
from = self->labelbuf + sizeof(self->labelbuf)-1;
*from-- = 0;
do {
- unsigned int digit = id % 10;
- *from = digit + '0';
+ *from-- = (id%10) + '0';
id /= 10;
} while (id);
+ ++from;
memcpy(from - len, prefix, len);
return from - len;
}
* But I can't imagine a pituation where the output is truly unnecessary.
*/
+static void _ast_codegen_output_type(ast_expression *self, ir_value *out)
+{
+ if (out->vtype == TYPE_FIELD)
+ out->fieldtype = self->next->vtype;
+ if (out->vtype == TYPE_FUNCTION)
+ out->outtype = self->next->vtype;
+}
+
+#define codegen_output_type(a,o) (_ast_codegen_output_type(&((a)->expression),(o)))
+
bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_value **out)
{
+ (void)func;
+ (void)lvalue;
+ if (self->expression.vtype == TYPE_NIL) {
+ *out = func->ir_func->owner->nil;
+ return true;
+ }
/* NOTE: This is the codegen for a variable used in an expression.
* It is not the codegen to generate the value. For this purpose,
* ast_local_codegen and ast_global_codegen are to be used before this
* on all the globals.
*/
if (!self->ir_v) {
- char typename[1024];
- ast_type_to_string((ast_expression*)self, typename, sizeof(typename));
- asterror(ast_ctx(self), "ast_value used before generated %s %s", typename, self->name);
+ char tname[1024]; /* typename is reserved in C++ */
+ ast_type_to_string((ast_expression*)self, tname, sizeof(tname));
+ compile_error(ast_ctx(self), "ast_value used before generated %s %s", tname, self->name);
return false;
}
*out = self->ir_v;
return true;
}
+static bool ast_global_array_set(ast_value *self)
+{
+ size_t count = vec_size(self->initlist);
+ size_t i;
+
+ if (count > self->expression.count) {
+ compile_error(ast_ctx(self), "too many elements in initializer");
+ count = self->expression.count;
+ }
+ else if (count < self->expression.count) {
+ /* add this?
+ compile_warning(ast_ctx(self), "not all elements are initialized");
+ */
+ }
+
+ for (i = 0; i != count; ++i) {
+ switch (self->expression.next->vtype) {
+ case TYPE_FLOAT:
+ if (!ir_value_set_float(self->ir_values[i], self->initlist[i].vfloat))
+ return false;
+ break;
+ case TYPE_VECTOR:
+ if (!ir_value_set_vector(self->ir_values[i], self->initlist[i].vvec))
+ return false;
+ break;
+ case TYPE_STRING:
+ if (!ir_value_set_string(self->ir_values[i], self->initlist[i].vstring))
+ return false;
+ break;
+ case TYPE_ARRAY:
+ /* we don't support them in any other place yet either */
+ compile_error(ast_ctx(self), "TODO: nested arrays");
+ return false;
+ case TYPE_FUNCTION:
+ /* this requiers a bit more work - similar to the fields I suppose */
+ compile_error(ast_ctx(self), "global of type function not properly generated");
+ return false;
+ case TYPE_FIELD:
+ if (!self->initlist[i].vfield) {
+ compile_error(ast_ctx(self), "field constant without vfield set");
+ return false;
+ }
+ if (!self->initlist[i].vfield->ir_v) {
+ compile_error(ast_ctx(self), "field constant generated before its field");
+ return false;
+ }
+ if (!ir_value_set_field(self->ir_values[i], self->initlist[i].vfield->ir_v))
+ return false;
+ break;
+ default:
+ compile_error(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
+ break;
+ }
+ }
+ return true;
+}
+
bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield)
{
ir_value *v = NULL;
- if (self->isconst && self->expression.vtype == TYPE_FUNCTION)
+ if (self->expression.vtype == TYPE_NIL) {
+ compile_error(ast_ctx(self), "internal error: trying to generate a variable of TYPE_NIL");
+ return false;
+ }
+
+ if (self->hasvalue && self->expression.vtype == TYPE_FUNCTION)
{
- ir_function *func = ir_builder_create_function(ir, self->name, self->expression.next->expression.vtype);
+ ir_function *func = ir_builder_create_function(ir, self->name, self->expression.next->vtype);
if (!func)
return false;
func->context = ast_ctx(self);
self->constval.vfunc->ir_func = func;
self->ir_v = func->value;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ self->ir_v->flags |= IR_FLAG_INCLUDE_DEF;
/* The function is filled later on ast_function_codegen... */
return true;
}
if (isfield && self->expression.vtype == TYPE_FIELD) {
ast_expression *fieldtype = self->expression.next;
- if (self->isconst) {
- asterror(ast_ctx(self), "TODO: constant field pointers with value");
+ if (self->hasvalue) {
+ compile_error(ast_ctx(self), "TODO: constant field pointers with value");
goto error;
}
- if (fieldtype->expression.vtype == TYPE_ARRAY) {
+ if (fieldtype->vtype == TYPE_ARRAY) {
size_t ai;
char *name;
size_t namelen;
- ast_expression_common *elemtype;
- int vtype;
- ast_value *array = (ast_value*)fieldtype;
+ ast_expression *elemtype;
+ int vtype;
+ ast_value *array = (ast_value*)fieldtype;
if (!ast_istype(fieldtype, ast_value)) {
- asterror(ast_ctx(self), "internal error: ast_value required");
+ compile_error(ast_ctx(self), "internal error: ast_value required");
return false;
}
/* we are lame now - considering the way QC works we won't tolerate arrays > 1024 elements */
- if (!array->expression.count || array->expression.count > opts_max_array_size)
- asterror(ast_ctx(self), "Invalid array of size %lu", (unsigned long)array->expression.count);
+ if (!array->expression.count || array->expression.count > OPTS_OPTION_U32(OPTION_MAX_ARRAY_SIZE))
+ compile_error(ast_ctx(self), "Invalid array of size %lu", (unsigned long)array->expression.count);
- elemtype = &array->expression.next->expression;
+ elemtype = array->expression.next;
vtype = elemtype->vtype;
v = ir_builder_create_field(ir, self->name, vtype);
if (!v) {
- asterror(ast_ctx(self), "ir_builder_create_global failed");
+ compile_error(ast_ctx(self), "ir_builder_create_global failed on `%s`", self->name);
return false;
}
- if (vtype == TYPE_FIELD)
- v->fieldtype = elemtype->next->expression.vtype;
v->context = ast_ctx(self);
+ v->unique_life = true;
+ v->locked = true;
array->ir_v = self->ir_v = v;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ self->ir_v->flags |= IR_FLAG_INCLUDE_DEF;
namelen = strlen(self->name);
name = (char*)mem_a(namelen + 16);
- strcpy(name, self->name);
+ util_strncpy(name, self->name, namelen);
array->ir_values = (ir_value**)mem_a(sizeof(array->ir_values[0]) * array->expression.count);
array->ir_values[0] = v;
for (ai = 1; ai < array->expression.count; ++ai) {
- snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
+ util_snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
array->ir_values[ai] = ir_builder_create_field(ir, name, vtype);
if (!array->ir_values[ai]) {
mem_d(name);
- asterror(ast_ctx(self), "ir_builder_create_global failed");
+ compile_error(ast_ctx(self), "ir_builder_create_global failed on `%s`", name);
return false;
}
- if (vtype == TYPE_FIELD)
- array->ir_values[ai]->fieldtype = elemtype->next->expression.vtype;
array->ir_values[ai]->context = ast_ctx(self);
+ array->ir_values[ai]->unique_life = true;
+ array->ir_values[ai]->locked = true;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ self->ir_values[ai]->flags |= IR_FLAG_INCLUDE_DEF;
}
mem_d(name);
}
else
{
- v = ir_builder_create_field(ir, self->name, self->expression.next->expression.vtype);
+ v = ir_builder_create_field(ir, self->name, self->expression.next->vtype);
if (!v)
return false;
v->context = ast_ctx(self);
self->ir_v = v;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ self->ir_v->flags |= IR_FLAG_INCLUDE_DEF;
}
return true;
}
char *name;
size_t namelen;
- ast_expression_common *elemtype = &self->expression.next->expression;
+ ast_expression *elemtype = self->expression.next;
int vtype = elemtype->vtype;
+ if (self->expression.flags & AST_FLAG_ARRAY_INIT && !self->expression.count) {
+ compile_error(ast_ctx(self), "array `%s' has no size", self->name);
+ return false;
+ }
+
/* same as with field arrays */
- 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);
+ if (!self->expression.count || self->expression.count > OPTS_OPTION_U32(OPTION_MAX_ARRAY_SIZE))
+ compile_error(ast_ctx(self), "Invalid array of size %lu", (unsigned long)self->expression.count);
v = ir_builder_create_global(ir, self->name, vtype);
if (!v) {
- asterror(ast_ctx(self), "ir_builder_create_global failed");
+ compile_error(ast_ctx(self), "ir_builder_create_global failed `%s`", self->name);
return false;
}
- if (vtype == TYPE_FIELD)
- v->fieldtype = elemtype->next->expression.vtype;
v->context = ast_ctx(self);
+ v->unique_life = true;
+ v->locked = true;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ v->flags |= IR_FLAG_INCLUDE_DEF;
namelen = strlen(self->name);
name = (char*)mem_a(namelen + 16);
- strcpy(name, self->name);
+ util_strncpy(name, self->name, namelen);
self->ir_values = (ir_value**)mem_a(sizeof(self->ir_values[0]) * self->expression.count);
self->ir_values[0] = v;
for (ai = 1; ai < self->expression.count; ++ai) {
- snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
+ util_snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
self->ir_values[ai] = ir_builder_create_global(ir, name, vtype);
if (!self->ir_values[ai]) {
mem_d(name);
- asterror(ast_ctx(self), "ir_builder_create_global failed");
+ compile_error(ast_ctx(self), "ir_builder_create_global failed `%s`", name);
return false;
}
- if (vtype == TYPE_FIELD)
- self->ir_values[ai]->fieldtype = elemtype->next->expression.vtype;
self->ir_values[ai]->context = ast_ctx(self);
+ self->ir_values[ai]->unique_life = true;
+ self->ir_values[ai]->locked = true;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ self->ir_values[ai]->flags |= IR_FLAG_INCLUDE_DEF;
}
mem_d(name);
}
*/
v = ir_builder_create_global(ir, self->name, self->expression.vtype);
if (!v) {
- asterror(ast_ctx(self), "ir_builder_create_global failed");
+ compile_error(ast_ctx(self), "ir_builder_create_global failed on `%s`", self->name);
return false;
}
- if (self->expression.vtype == TYPE_FIELD)
- v->fieldtype = self->expression.next->expression.vtype;
+ codegen_output_type(self, v);
v->context = ast_ctx(self);
}
- if (self->isconst) {
+ /* link us to the ir_value */
+ v->cvq = self->cvq;
+ self->ir_v = v;
+ if (self->expression.flags & AST_FLAG_INCLUDE_DEF)
+ self->ir_v->flags |= IR_FLAG_INCLUDE_DEF;
+
+ /* initialize */
+ if (self->hasvalue) {
switch (self->expression.vtype)
{
case TYPE_FLOAT:
goto error;
break;
case TYPE_ARRAY:
- asterror(ast_ctx(self), "TODO: global constant array");
+ ast_global_array_set(self);
break;
case TYPE_FUNCTION:
- asterror(ast_ctx(self), "global of type function not properly generated");
+ compile_error(ast_ctx(self), "global of type function not properly generated");
goto error;
/* Cannot generate an IR value for a function,
* need a pointer pointing to a function rather.
*/
+ case TYPE_FIELD:
+ if (!self->constval.vfield) {
+ compile_error(ast_ctx(self), "field constant without vfield set");
+ goto error;
+ }
+ if (!self->constval.vfield->ir_v) {
+ compile_error(ast_ctx(self), "field constant generated before its field");
+ goto error;
+ }
+ if (!ir_value_set_field(v, self->constval.vfield->ir_v))
+ goto error;
+ break;
default:
- asterror(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
+ compile_error(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
break;
}
}
-
- /* link us to the ir_value */
- self->ir_v = v;
return true;
error: /* clean up */
- ir_value_delete(v);
+ if(v) ir_value_delete(v);
return false;
}
-bool ast_local_codegen(ast_value *self, ir_function *func, bool param)
+static bool ast_local_codegen(ast_value *self, ir_function *func, bool param)
{
ir_value *v = NULL;
- if (self->isconst && self->expression.vtype == TYPE_FUNCTION)
+
+ if (self->expression.vtype == TYPE_NIL) {
+ compile_error(ast_ctx(self), "internal error: trying to generate a variable of TYPE_NIL");
+ return false;
+ }
+
+ if (self->hasvalue && self->expression.vtype == TYPE_FUNCTION)
{
/* Do we allow local functions? I think not...
* this is NOT a function pointer atm.
char *name;
size_t namelen;
- ast_expression_common *elemtype = &self->expression.next->expression;
+ ast_expression *elemtype = self->expression.next;
int vtype = elemtype->vtype;
- if (param) {
- asterror(ast_ctx(self), "array-parameters are not supported");
+ func->flags |= IR_FLAG_HAS_ARRAYS;
+
+ if (param && !(self->expression.flags & AST_FLAG_IS_VARARG)) {
+ compile_error(ast_ctx(self), "array-parameters are not supported");
return false;
}
/* 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);
+ if (!self->expression.count || self->expression.count > OPTS_OPTION_U32(OPTION_MAX_ARRAY_SIZE)) {
+ compile_error(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");
+ compile_error(ast_ctx(self), "failed to allocate array values");
return false;
}
v = ir_function_create_local(func, self->name, vtype, param);
if (!v) {
- asterror(ast_ctx(self), "ir_function_create_local failed");
+ compile_error(ast_ctx(self), "internal error: ir_function_create_local failed");
return false;
}
- if (vtype == TYPE_FIELD)
- v->fieldtype = elemtype->next->expression.vtype;
v->context = ast_ctx(self);
+ v->unique_life = true;
+ v->locked = true;
namelen = strlen(self->name);
name = (char*)mem_a(namelen + 16);
- strcpy(name, self->name);
+ util_strncpy(name, self->name, namelen);
self->ir_values[0] = v;
for (ai = 1; ai < self->expression.count; ++ai) {
- snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
+ util_snprintf(name + namelen, 16, "[%u]", (unsigned int)ai);
self->ir_values[ai] = ir_function_create_local(func, name, vtype, param);
if (!self->ir_values[ai]) {
- asterror(ast_ctx(self), "ir_builder_create_global failed");
+ compile_error(ast_ctx(self), "internal_error: ir_builder_create_global failed on `%s`", name);
return false;
}
- if (vtype == TYPE_FIELD)
- self->ir_values[ai]->fieldtype = elemtype->next->expression.vtype;
self->ir_values[ai]->context = ast_ctx(self);
+ self->ir_values[ai]->unique_life = true;
+ self->ir_values[ai]->locked = true;
}
+ mem_d(name);
}
else
{
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;
+ codegen_output_type(self, v);
v->context = ast_ctx(self);
}
/* A constant local... hmmm...
* I suppose the IR will have to deal with this
*/
- if (self->isconst) {
+ if (self->hasvalue) {
switch (self->expression.vtype)
{
case TYPE_FLOAT:
goto error;
break;
default:
- asterror(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
+ compile_error(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
break;
}
}
/* link us to the ir_value */
+ v->cvq = self->cvq;
self->ir_v = v;
+ if (!ast_generate_accessors(self, func->owner))
+ return false;
+ return true;
+
+error: /* clean up */
+ ir_value_delete(v);
+ return false;
+}
+
+bool ast_generate_accessors(ast_value *self, ir_builder *ir)
+{
+ size_t i;
+ bool warn = OPTS_WARN(WARN_USED_UNINITIALIZED);
+ if (!self->setter || !self->getter)
+ return true;
+ for (i = 0; i < self->expression.count; ++i) {
+ if (!self->ir_values) {
+ compile_error(ast_ctx(self), "internal error: no array values generated for `%s`", self->name);
+ return false;
+ }
+ if (!self->ir_values[i]) {
+ compile_error(ast_ctx(self), "internal error: not all array values have been generated for `%s`", self->name);
+ return false;
+ }
+ if (self->ir_values[i]->life) {
+ compile_error(ast_ctx(self), "internal error: function containing `%s` already generated", self->name);
+ return false;
+ }
+ }
+
+ opts_set(opts.warn, WARN_USED_UNINITIALIZED, false);
if (self->setter) {
- if (!ast_global_codegen(self->setter, func->owner, false) ||
- !ast_function_codegen(self->setter->constval.vfunc, func->owner) ||
+ if (!ast_global_codegen (self->setter, ir, false) ||
+ !ast_function_codegen(self->setter->constval.vfunc, ir) ||
!ir_function_finalize(self->setter->constval.vfunc->ir_func))
+ {
+ compile_error(ast_ctx(self), "internal error: failed to generate setter for `%s`", self->name);
+ opts_set(opts.warn, WARN_USED_UNINITIALIZED, warn);
return false;
+ }
}
if (self->getter) {
- if (!ast_global_codegen(self->getter, func->owner, false) ||
- !ast_function_codegen(self->getter->constval.vfunc, func->owner) ||
+ if (!ast_global_codegen (self->getter, ir, false) ||
+ !ast_function_codegen(self->getter->constval.vfunc, ir) ||
!ir_function_finalize(self->getter->constval.vfunc->ir_func))
+ {
+ compile_error(ast_ctx(self), "internal error: failed to generate getter for `%s`", self->name);
+ opts_set(opts.warn, WARN_USED_UNINITIALIZED, warn);
return false;
+ }
}
+ for (i = 0; i < self->expression.count; ++i) {
+ vec_free(self->ir_values[i]->life);
+ }
+ opts_set(opts.warn, WARN_USED_UNINITIALIZED, warn);
return true;
-
-error: /* clean up */
- ir_value_delete(v);
- return false;
}
bool ast_function_codegen(ast_function *self, ir_builder *ir)
{
ir_function *irf;
ir_value *dummy;
- ast_expression_common *ec;
+ ast_expression *ec;
+ ast_expression_codegen *cgen;
size_t i;
+ (void)ir;
+
irf = self->ir_func;
if (!irf) {
- asterror(ast_ctx(self), "ast_function's related ast_value was not generated yet");
+ compile_error(ast_ctx(self), "internal error: ast_function's related ast_value was not generated yet");
return false;
}
ec = &self->vtype->expression;
for (i = 0; i < vec_size(ec->params); ++i)
{
- vec_push(irf->params, ec->params[i]->expression.vtype);
+ if (ec->params[i]->expression.vtype == TYPE_FIELD)
+ vec_push(irf->params, ec->params[i]->expression.next->vtype);
+ else
+ vec_push(irf->params, ec->params[i]->expression.vtype);
if (!self->builtin) {
if (!ast_local_codegen(ec->params[i], self->ir_func, true))
return false;
}
}
+ if (self->varargs) {
+ if (!ast_local_codegen(self->varargs, self->ir_func, true))
+ return false;
+ irf->max_varargs = self->varargs->expression.count;
+ }
+
if (self->builtin) {
irf->builtin = self->builtin;
return true;
}
+ /* have a local return value variable? */
+ if (self->return_value) {
+ if (!ast_local_codegen(self->return_value, self->ir_func, false))
+ return false;
+ }
+
if (!vec_size(self->blocks)) {
- asterror(ast_ctx(self), "function `%s` has no body", self->name);
+ compile_error(ast_ctx(self), "function `%s` has no body", self->name);
return false;
}
- self->curblock = ir_function_create_block(irf, "entry");
+ irf->first = self->curblock = ir_function_create_block(ast_ctx(self), irf, "entry");
if (!self->curblock) {
- asterror(ast_ctx(self), "failed to allocate entry block for `%s`", self->name);
+ compile_error(ast_ctx(self), "failed to allocate entry block for `%s`", self->name);
return false;
}
+ if (self->argc) {
+ ir_value *va_count;
+ ir_value *fixed;
+ ir_value *sub;
+ if (!ast_local_codegen(self->argc, self->ir_func, true))
+ return false;
+ cgen = self->argc->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->argc), self, false, &va_count))
+ return false;
+ cgen = self->fixedparams->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->fixedparams), self, false, &fixed))
+ return false;
+ sub = ir_block_create_binop(self->curblock, ast_ctx(self),
+ ast_function_label(self, "va_count"), INSTR_SUB_F,
+ ir_builder_get_va_count(ir), fixed);
+ if (!sub)
+ return false;
+ if (!ir_block_create_store_op(self->curblock, ast_ctx(self), INSTR_STORE_F,
+ va_count, sub))
+ {
+ return false;
+ }
+ }
+
for (i = 0; i < vec_size(self->blocks); ++i) {
- ast_expression_codegen *gen = self->blocks[i]->expression.codegen;
- if (!(*gen)((ast_expression*)self->blocks[i], self, false, &dummy))
+ cgen = self->blocks[i]->expression.codegen;
+ if (!(*cgen)((ast_expression*)self->blocks[i], self, false, &dummy))
return false;
}
/* TODO: check return types */
- if (!self->curblock->is_return)
+ if (!self->curblock->final)
{
- return ir_block_create_return(self->curblock, NULL);
- /* From now on the parser has to handle this situation */
-#if 0
if (!self->vtype->expression.next ||
- self->vtype->expression.next->expression.vtype == TYPE_VOID)
+ self->vtype->expression.next->vtype == TYPE_VOID)
{
- return ir_block_create_return(self->curblock, NULL);
+ return ir_block_create_return(self->curblock, ast_ctx(self), NULL);
}
- else
+ else if (vec_size(self->curblock->entries) || self->curblock == irf->first)
{
- /* error("missing return"); */
- asterror(ast_ctx(self), "function `%s` missing return value", self->name);
- return false;
+ if (self->return_value) {
+ cgen = self->return_value->expression.codegen;
+ if (!(*cgen)((ast_expression*)(self->return_value), self, false, &dummy))
+ return false;
+ return ir_block_create_return(self->curblock, ast_ctx(self), dummy);
+ }
+ else if (compile_warning(ast_ctx(self), WARN_MISSING_RETURN_VALUES,
+ "control reaches end of non-void function (`%s`) via %s",
+ self->name, self->curblock->label))
+ {
+ return false;
+ }
+ return ir_block_create_return(self->curblock, ast_ctx(self), NULL);
}
-#endif
}
return true;
}
* of the form: (a, b, c) = x should not assign to c...
*/
if (lvalue) {
- asterror(ast_ctx(self), "not an l-value (code-block)");
+ compile_error(ast_ctx(self), "not an l-value (code-block)");
return false;
}
for (i = 0; i < vec_size(self->locals); ++i)
{
if (!ast_local_codegen(self->locals[i], func->ir_func, false)) {
- if (opts_debug)
- asterror(ast_ctx(self), "failed to generate local `%s`", self->locals[i]->name);
+ if (OPTS_OPTION_BOOL(OPTION_DEBUG))
+ compile_error(ast_ctx(self), "failed to generate local `%s`", self->locals[i]->name);
return false;
}
}
for (i = 0; i < vec_size(self->exprs); ++i)
{
- ast_expression_codegen *gen = self->exprs[i]->expression.codegen;
- if (func->curblock->final) {
- asterror(ast_ctx(self->exprs[i]), "unreachable statement");
- return false;
+ ast_expression_codegen *gen;
+ if (func->curblock->final && !ast_istype(self->exprs[i], ast_label)) {
+ if (compile_warning(ast_ctx(self->exprs[i]), WARN_UNREACHABLE_CODE, "unreachable statement"))
+ return false;
+ continue;
}
+ gen = self->exprs[i]->codegen;
if (!(*gen)(self->exprs[i], func, false, out))
return false;
}
bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_value **out)
{
ast_expression_codegen *cgen;
- ir_value *left, *right;
+ ir_value *left = NULL;
+ ir_value *right = NULL;
ast_value *arr;
- ast_value *idx;
+ ast_value *idx = 0;
ast_array_index *ai = NULL;
if (lvalue && self->expression.outl) {
ai = (ast_array_index*)self->dest;
idx = (ast_value*)ai->index;
- if (ast_istype(ai->index, ast_value) && idx->isconst)
+ if (ast_istype(ai->index, ast_value) && idx->hasvalue && idx->cvq == CV_CONST)
ai = NULL;
}
ir_instr *call;
if (lvalue) {
- asterror(ast_ctx(self), "array-subscript assignment cannot produce lvalues");
+ compile_error(ast_ctx(self), "array-subscript assignment cannot produce lvalues");
return false;
}
arr = (ast_value*)ai->array;
if (!ast_istype(ai->array, ast_value) || !arr->setter) {
- asterror(ast_ctx(self), "value has no setter (%s)", arr->name);
+ compile_error(ast_ctx(self), "value has no setter (%s)", arr->name);
return false;
}
if (!(*cgen)((ast_expression*)(arr->setter), func, true, &funval))
return false;
- cgen = self->source->expression.codegen;
+ cgen = self->source->codegen;
if (!(*cgen)((ast_expression*)(self->source), func, false, &right))
return false;
- call = ir_block_create_call(func->curblock, ast_function_label(func, "store"), funval);
+ call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "store"), funval, false);
if (!call)
return false;
ir_call_param(call, iridx);
{
/* regular code */
- cgen = self->dest->expression.codegen;
+ cgen = self->dest->codegen;
/* lvalue! */
if (!(*cgen)((ast_expression*)(self->dest), func, true, &left))
return false;
self->expression.outl = left;
- cgen = self->source->expression.codegen;
+ cgen = self->source->codegen;
/* rvalue! */
if (!(*cgen)((ast_expression*)(self->source), func, false, &right))
return false;
- if (!ir_block_create_store_op(func->curblock, self->op, left, right))
+ if (!ir_block_create_store_op(func->curblock, ast_ctx(self), self->op, left, right))
return false;
self->expression.outr = right;
}
/* A binary operation cannot yield an l-value */
if (lvalue) {
- asterror(ast_ctx(self), "not an l-value (binop)");
+ compile_error(ast_ctx(self), "not an l-value (binop)");
return false;
}
return true;
}
- if (OPTS_FLAG(SHORT_LOGIC) &&
+ if ((OPTS_FLAG(SHORT_LOGIC) || OPTS_FLAG(PERL_LOGIC)) &&
(self->op == INSTR_AND || self->op == INSTR_OR))
{
/* short circuit evaluation */
ir_block *from_left, *from_right;
ir_instr *phi;
size_t merge_id;
- uint16_t notop;
-
- /* Note about casting to true boolean values:
- * We use a single NOT for sub expressions, and an
- * overall NOT at the end, and for that purpose swap
- * all the jump conditions in order for the NOT to get
- * doubled.
- * ie: (a && b) usually becomes (!!a ? !!b : !!a)
- * but we translate this to (!(!a ? !a : !b))
- */
+ /* prepare end-block */
merge_id = vec_size(func->ir_func->blocks);
- merge = ir_function_create_block(func->ir_func, ast_function_label(func, "sce_merge"));
+ merge = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "sce_merge"));
- cgen = self->left->expression.codegen;
+ /* generate the left expression */
+ cgen = self->left->codegen;
if (!(*cgen)((ast_expression*)(self->left), func, false, &left))
return false;
- if (!OPTS_FLAG(PERL_LOGIC)) {
- notop = type_not_instr[left->vtype];
- if (notop == AINSTR_END) {
- asterror(ast_ctx(self), "don't know how to cast to bool...");
- return false;
- }
- left = ir_block_create_unary(func->curblock,
- ast_function_label(func, "sce_not"),
- notop,
- left);
- }
+ /* remember the block */
from_left = func->curblock;
- other = ir_function_create_block(func->ir_func, ast_function_label(func, "sce_other"));
- if ( !(self->op == INSTR_OR) != !OPTS_FLAG(PERL_LOGIC) ) {
- if (!ir_block_create_if(func->curblock, left, other, merge))
+ /* create a new block for the right expression */
+ other = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "sce_other"));
+ if (self->op == INSTR_AND) {
+ /* on AND: left==true -> other */
+ if (!ir_block_create_if(func->curblock, ast_ctx(self), left, other, merge))
return false;
} else {
- if (!ir_block_create_if(func->curblock, left, merge, other))
+ /* on OR: left==false -> other */
+ if (!ir_block_create_if(func->curblock, ast_ctx(self), left, merge, other))
return false;
}
/* use the likely flag */
vec_last(func->curblock->instr)->likely = true;
+ /* enter the right-expression's block */
func->curblock = other;
- cgen = self->right->expression.codegen;
+ /* generate */
+ cgen = self->right->codegen;
if (!(*cgen)((ast_expression*)(self->right), func, false, &right))
return false;
- if (!OPTS_FLAG(PERL_LOGIC)) {
- notop = type_not_instr[right->vtype];
- if (notop == AINSTR_END) {
- asterror(ast_ctx(self), "don't know how to cast to bool...");
- return false;
- }
- right = ir_block_create_unary(func->curblock,
- ast_function_label(func, "sce_not"),
- notop,
- right);
- }
+ /* remember block */
from_right = func->curblock;
- if (!ir_block_create_jump(func->curblock, merge))
+ /* jump to the merge block */
+ if (!ir_block_create_jump(func->curblock, ast_ctx(self), merge))
return false;
vec_remove(func->ir_func->blocks, merge_id, 1);
vec_push(func->ir_func->blocks, merge);
func->curblock = merge;
- phi = ir_block_create_phi(func->curblock, ast_function_label(func, "sce_value"), TYPE_FLOAT);
+ phi = ir_block_create_phi(func->curblock, ast_ctx(self),
+ ast_function_label(func, "sce_value"),
+ self->expression.vtype);
ir_phi_add(phi, from_left, left);
ir_phi_add(phi, from_right, right);
*out = ir_phi_value(phi);
+ if (!*out)
+ return false;
+
if (!OPTS_FLAG(PERL_LOGIC)) {
- notop = type_not_instr[(*out)->vtype];
- if (notop == AINSTR_END) {
- asterror(ast_ctx(self), "don't know how to cast to bool...");
- return false;
+ /* cast-to-bool */
+ if (OPTS_FLAG(CORRECT_LOGIC) && (*out)->vtype == TYPE_VECTOR) {
+ *out = ir_block_create_unary(func->curblock, ast_ctx(self),
+ ast_function_label(func, "sce_bool_v"),
+ INSTR_NOT_V, *out);
+ if (!*out)
+ return false;
+ *out = ir_block_create_unary(func->curblock, ast_ctx(self),
+ ast_function_label(func, "sce_bool"),
+ INSTR_NOT_F, *out);
+ if (!*out)
+ return false;
+ }
+ else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && (*out)->vtype == TYPE_STRING) {
+ *out = ir_block_create_unary(func->curblock, ast_ctx(self),
+ ast_function_label(func, "sce_bool_s"),
+ INSTR_NOT_S, *out);
+ if (!*out)
+ return false;
+ *out = ir_block_create_unary(func->curblock, ast_ctx(self),
+ ast_function_label(func, "sce_bool"),
+ INSTR_NOT_F, *out);
+ if (!*out)
+ return false;
+ }
+ else {
+ *out = ir_block_create_binop(func->curblock, ast_ctx(self),
+ ast_function_label(func, "sce_bool"),
+ INSTR_AND, *out, *out);
+ if (!*out)
+ return false;
}
- *out = ir_block_create_unary(func->curblock,
- ast_function_label(func, "sce_final_not"),
- notop,
- *out);
}
- if (!*out)
- return false;
+
self->expression.outr = *out;
+ codegen_output_type(self, *out);
return true;
}
- cgen = self->left->expression.codegen;
+ cgen = self->left->codegen;
if (!(*cgen)((ast_expression*)(self->left), func, false, &left))
return false;
- cgen = self->right->expression.codegen;
+ cgen = self->right->codegen;
if (!(*cgen)((ast_expression*)(self->right), func, false, &right))
return false;
- *out = ir_block_create_binop(func->curblock, ast_function_label(func, "bin"),
+ *out = ir_block_create_binop(func->curblock, ast_ctx(self), ast_function_label(func, "bin"),
self->op, left, right);
if (!*out)
return false;
self->expression.outr = *out;
+ codegen_output_type(self, *out);
return true;
}
bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, ir_value **out)
{
ast_expression_codegen *cgen;
- ir_value *leftl, *leftr, *right, *bin;
+ ir_value *leftl = NULL, *leftr, *right, *bin;
+
+ ast_value *arr;
+ ast_value *idx = 0;
+ ast_array_index *ai = NULL;
+ ir_value *iridx = NULL;
if (lvalue && self->expression.outl) {
*out = self->expression.outl;
return true;
}
+ if (ast_istype(self->dest, ast_array_index))
+ {
+
+ ai = (ast_array_index*)self->dest;
+ idx = (ast_value*)ai->index;
+
+ if (ast_istype(ai->index, ast_value) && idx->hasvalue && idx->cvq == CV_CONST)
+ ai = NULL;
+ }
+
/* for a binstore we need both an lvalue and an rvalue for the left side */
/* rvalue of destination! */
- cgen = self->dest->expression.codegen;
+ if (ai) {
+ cgen = idx->expression.codegen;
+ if (!(*cgen)((ast_expression*)(idx), func, false, &iridx))
+ return false;
+ }
+ cgen = self->dest->codegen;
if (!(*cgen)((ast_expression*)(self->dest), func, false, &leftr))
return false;
/* source as rvalue only */
- cgen = self->source->expression.codegen;
+ cgen = self->source->codegen;
if (!(*cgen)((ast_expression*)(self->source), func, false, &right))
return false;
/* now the binary */
- bin = ir_block_create_binop(func->curblock, ast_function_label(func, "binst"),
+ bin = ir_block_create_binop(func->curblock, ast_ctx(self), ast_function_label(func, "binst"),
self->opbin, leftr, right);
self->expression.outr = bin;
- /* now store them */
- cgen = self->dest->expression.codegen;
- /* lvalue of destination */
- if (!(*cgen)((ast_expression*)(self->dest), func, true, &leftl))
- return false;
- self->expression.outl = leftl;
- if (!ir_block_create_store_op(func->curblock, self->opstore, leftl, bin))
- return false;
- self->expression.outr = bin;
+ if (ai) {
+ /* we need to call the setter */
+ ir_value *funval;
+ ir_instr *call;
+
+ if (lvalue) {
+ compile_error(ast_ctx(self), "array-subscript assignment cannot produce lvalues");
+ return false;
+ }
+
+ arr = (ast_value*)ai->array;
+ if (!ast_istype(ai->array, ast_value) || !arr->setter) {
+ compile_error(ast_ctx(self), "value has no setter (%s)", arr->name);
+ return false;
+ }
+
+ cgen = arr->setter->expression.codegen;
+ if (!(*cgen)((ast_expression*)(arr->setter), func, true, &funval))
+ return false;
+
+ call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "store"), funval, false);
+ if (!call)
+ return false;
+ ir_call_param(call, iridx);
+ ir_call_param(call, bin);
+ self->expression.outr = bin;
+ } else {
+ /* now store them */
+ cgen = self->dest->codegen;
+ /* lvalue of destination */
+ if (!(*cgen)((ast_expression*)(self->dest), func, true, &leftl))
+ return false;
+ self->expression.outl = leftl;
+
+ if (!ir_block_create_store_op(func->curblock, ast_ctx(self), self->opstore, leftl, bin))
+ return false;
+ self->expression.outr = bin;
+ }
/* Theoretically, an assinment returns its left side as an
* lvalue, if we don't need an lvalue though, we return
/* An unary operation cannot yield an l-value */
if (lvalue) {
- asterror(ast_ctx(self), "not an l-value (binop)");
+ compile_error(ast_ctx(self), "not an l-value (binop)");
return false;
}
return true;
}
- cgen = self->operand->expression.codegen;
+ cgen = self->operand->codegen;
/* lvalue! */
if (!(*cgen)((ast_expression*)(self->operand), func, false, &operand))
return false;
- *out = ir_block_create_unary(func->curblock, ast_function_label(func, "unary"),
+ *out = ir_block_create_unary(func->curblock, ast_ctx(self), ast_function_label(func, "unary"),
self->op, operand);
if (!*out)
return false;
ast_expression_codegen *cgen;
ir_value *operand;
+ *out = NULL;
+
/* In the context of a return operation, we don't actually return
* anything...
*/
if (lvalue) {
- asterror(ast_ctx(self), "return-expression is not an l-value");
+ compile_error(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!");
+ compile_error(ast_ctx(self), "internal error: ast_return cannot be reused, it bears no result!");
return false;
}
self->expression.outr = (ir_value*)1;
if (self->operand) {
- cgen = self->operand->expression.codegen;
+ cgen = self->operand->codegen;
/* lvalue! */
if (!(*cgen)((ast_expression*)(self->operand), func, false, &operand))
return false;
- if (!ir_block_create_return(func->curblock, operand))
+ if (!ir_block_create_return(func->curblock, ast_ctx(self), operand))
return false;
} else {
- if (!ir_block_create_return(func->curblock, NULL))
+ if (!ir_block_create_return(func->curblock, ast_ctx(self), NULL))
return false;
}
return true;
}
- cgen = self->entity->expression.codegen;
+ cgen = self->entity->codegen;
if (!(*cgen)((ast_expression*)(self->entity), func, false, &ent))
return false;
- cgen = self->field->expression.codegen;
+ cgen = self->field->codegen;
if (!(*cgen)((ast_expression*)(self->field), func, false, &field))
return false;
if (lvalue) {
/* address! */
- *out = ir_block_create_fieldaddress(func->curblock, ast_function_label(func, "efa"),
+ *out = ir_block_create_fieldaddress(func->curblock, ast_ctx(self), ast_function_label(func, "efa"),
ent, field);
} else {
- *out = ir_block_create_load_from_ent(func->curblock, ast_function_label(func, "efv"),
+ *out = ir_block_create_load_from_ent(func->curblock, ast_ctx(self), ast_function_label(func, "efv"),
ent, field, self->expression.vtype);
+ /* Done AFTER error checking:
+ codegen_output_type(self, *out);
+ */
}
if (!*out) {
- asterror(ast_ctx(self), "failed to create %s instruction (output type %s)",
+ compile_error(ast_ctx(self), "failed to create %s instruction (output type %s)",
(lvalue ? "ADDRESS" : "FIELD"),
type_name[self->expression.vtype]);
return false;
}
+ if (!lvalue)
+ codegen_output_type(self, *out);
if (lvalue)
self->expression.outl = *out;
ir_value *vec;
/* in QC this is always an lvalue */
- (void)lvalue;
+ if (lvalue && self->rvalue) {
+ compile_error(ast_ctx(self), "not an l-value (member access)");
+ return false;
+ }
if (self->expression.outl) {
*out = self->expression.outl;
return true;
}
- cgen = self->owner->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->owner), func, true, &vec))
+ cgen = self->owner->codegen;
+ if (!(*cgen)((ast_expression*)(self->owner), func, false, &vec))
return false;
if (vec->vtype != TYPE_VECTOR &&
- !(vec->vtype == TYPE_FIELD && self->owner->expression.next->expression.vtype == TYPE_VECTOR))
+ !(vec->vtype == TYPE_FIELD && self->owner->next->vtype == TYPE_VECTOR))
{
return false;
}
if (!lvalue && self->expression.outr) {
*out = self->expression.outr;
+ return true;
}
if (lvalue && self->expression.outl) {
*out = self->expression.outl;
+ return true;
}
if (!ast_istype(self->array, ast_value)) {
- asterror(ast_ctx(self), "array indexing this way is not supported");
+ compile_error(ast_ctx(self), "array indexing this way is not supported");
/* note this would actually be pointer indexing because the left side is
* not an actual array but (hopefully) an indexable expression.
* Once we get integer arithmetic, and GADDRESS/GSTORE/GLOAD instruction
arr = (ast_value*)self->array;
idx = (ast_value*)self->index;
- if (!ast_istype(self->index, ast_value) || !idx->isconst) {
+ if (!ast_istype(self->index, ast_value) || !idx->hasvalue || idx->cvq != CV_CONST) {
/* Time to use accessor functions */
ast_expression_codegen *cgen;
ir_value *iridx, *funval;
ir_instr *call;
if (lvalue) {
- asterror(ast_ctx(self), "(.2) array indexing here needs a compile-time constant");
+ compile_error(ast_ctx(self), "(.2) array indexing here needs a compile-time constant");
return false;
}
if (!arr->getter) {
- asterror(ast_ctx(self), "value has no getter, don't know how to index it");
+ compile_error(ast_ctx(self), "value has no getter, don't know how to index it");
return false;
}
- cgen = self->index->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->index), func, true, &iridx))
+ cgen = self->index->codegen;
+ if (!(*cgen)((ast_expression*)(self->index), func, false, &iridx))
return false;
cgen = arr->getter->expression.codegen;
if (!(*cgen)((ast_expression*)(arr->getter), func, true, &funval))
return false;
- call = ir_block_create_call(func->curblock, ast_function_label(func, "fetch"), funval);
+ call = ir_block_create_call(func->curblock, ast_ctx(self), ast_function_label(func, "fetch"), funval, false);
if (!call)
return false;
ir_call_param(call, iridx);
*out = ir_call_value(call);
self->expression.outr = *out;
+ (*out)->vtype = self->expression.vtype;
+ codegen_output_type(self, *out);
return true;
}
- 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];
+ if (idx->expression.vtype == TYPE_FLOAT) {
+ unsigned int arridx = idx->constval.vfloat;
+ if (arridx >= self->array->count)
+ {
+ compile_error(ast_ctx(self), "array index out of bounds: %i", arridx);
+ return false;
+ }
+ *out = arr->ir_values[arridx];
+ }
+ else if (idx->expression.vtype == TYPE_INTEGER) {
+ unsigned int arridx = idx->constval.vint;
+ if (arridx >= self->array->count)
+ {
+ compile_error(ast_ctx(self), "array index out of bounds: %i", arridx);
+ return false;
+ }
+ *out = arr->ir_values[arridx];
+ }
else {
- asterror(ast_ctx(self), "array indexing here needs an integer constant");
+ compile_error(ast_ctx(self), "array indexing here needs an integer constant");
return false;
}
+ (*out)->vtype = self->expression.vtype;
+ codegen_output_type(self, *out);
return true;
}
+bool ast_argpipe_codegen(ast_argpipe *self, ast_function *func, bool lvalue, ir_value **out)
+{
+ *out = NULL;
+ if (lvalue) {
+ compile_error(ast_ctx(self), "argpipe node: not an lvalue");
+ return false;
+ }
+ (void)func;
+ (void)out;
+ compile_error(ast_ctx(self), "TODO: argpipe codegen not implemented");
+ return false;
+}
+
bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_value **out)
{
ast_expression_codegen *cgen;
ir_value *condval;
ir_value *dummy;
- ir_block *cond = func->curblock;
+ ir_block *cond;
ir_block *ontrue;
ir_block *onfalse;
ir_block *ontrue_endblock = NULL;
ir_block *onfalse_endblock = NULL;
- ir_block *merge;
+ ir_block *merge = NULL;
/* We don't output any value, thus also don't care about r/lvalue */
(void)out;
(void)lvalue;
if (self->expression.outr) {
- asterror(ast_ctx(self), "internal error: ast_ifthen cannot be reused, it bears no result!");
+ compile_error(ast_ctx(self), "internal error: ast_ifthen cannot be reused, it bears no result!");
return false;
}
self->expression.outr = (ir_value*)1;
/* generate the condition */
- cgen = self->cond->expression.codegen;
+ cgen = self->cond->codegen;
if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
return false;
/* update the block which will get the jump - because short-logic or ternaries may have changed this */
if (self->on_true) {
/* create on-true block */
- ontrue = ir_function_create_block(func->ir_func, ast_function_label(func, "ontrue"));
+ ontrue = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "ontrue"));
if (!ontrue)
return false;
func->curblock = ontrue;
/* generate */
- cgen = self->on_true->expression.codegen;
+ cgen = self->on_true->codegen;
if (!(*cgen)((ast_expression*)(self->on_true), func, false, &dummy))
return false;
/* on-false path */
if (self->on_false) {
/* create on-false block */
- onfalse = ir_function_create_block(func->ir_func, ast_function_label(func, "onfalse"));
+ onfalse = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "onfalse"));
if (!onfalse)
return false;
func->curblock = onfalse;
/* generate */
- cgen = self->on_false->expression.codegen;
+ cgen = self->on_false->codegen;
if (!(*cgen)((ast_expression*)(self->on_false), func, false, &dummy))
return false;
onfalse = NULL;
/* Merge block were they all merge in to */
- merge = ir_function_create_block(func->ir_func, ast_function_label(func, "endif"));
- if (!merge)
- return false;
- /* add jumps ot the merge block */
- if (ontrue && !ontrue_endblock->final && !ir_block_create_jump(ontrue_endblock, merge))
- return false;
- if (onfalse && !onfalse_endblock->final && !ir_block_create_jump(onfalse_endblock, merge))
- return false;
+ if (!ontrue || !onfalse || !ontrue_endblock->final || !onfalse_endblock->final)
+ {
+ merge = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "endif"));
+ if (!merge)
+ return false;
+ /* add jumps ot the merge block */
+ if (ontrue && !ontrue_endblock->final && !ir_block_create_jump(ontrue_endblock, ast_ctx(self), merge))
+ return false;
+ if (onfalse && !onfalse_endblock->final && !ir_block_create_jump(onfalse_endblock, ast_ctx(self), merge))
+ return false;
+
+ /* Now enter the merge block */
+ func->curblock = merge;
+ }
/* we create the if here, that way all blocks are ordered :)
*/
- if (!ir_block_create_if(cond, condval,
+ if (!ir_block_create_if(cond, ast_ctx(self), condval,
(ontrue ? ontrue : merge),
(onfalse ? onfalse : merge)))
{
return false;
}
- /* Now enter the merge block */
- func->curblock = merge;
-
return true;
}
ir_instr *phi;
ir_block *cond = func->curblock;
- ir_block *ontrue;
- ir_block *onfalse;
+ ir_block *cond_out = NULL;
+ ir_block *ontrue, *ontrue_out = NULL;
+ ir_block *onfalse, *onfalse_out = NULL;
ir_block *merge;
/* Ternary can never create an lvalue... */
/* generate the condition */
func->curblock = cond;
- cgen = self->cond->expression.codegen;
+ cgen = self->cond->codegen;
if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
return false;
+ cond_out = func->curblock;
/* create on-true block */
- ontrue = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_T"));
+ ontrue = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "tern_T"));
if (!ontrue)
return false;
else
func->curblock = ontrue;
/* generate */
- cgen = self->on_true->expression.codegen;
+ cgen = self->on_true->codegen;
if (!(*cgen)((ast_expression*)(self->on_true), func, false, &trueval))
return false;
+
+ ontrue_out = func->curblock;
}
/* create on-false block */
- onfalse = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_F"));
+ onfalse = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "tern_F"));
if (!onfalse)
return false;
else
func->curblock = onfalse;
/* generate */
- cgen = self->on_false->expression.codegen;
+ cgen = self->on_false->codegen;
if (!(*cgen)((ast_expression*)(self->on_false), func, false, &falseval))
return false;
+
+ onfalse_out = func->curblock;
}
/* create merge block */
- merge = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_out"));
+ merge = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "tern_out"));
if (!merge)
return false;
/* jump to merge block */
- if (!ir_block_create_jump(ontrue, merge))
+ if (!ir_block_create_jump(ontrue_out, ast_ctx(self), merge))
return false;
- if (!ir_block_create_jump(onfalse, merge))
+ if (!ir_block_create_jump(onfalse_out, ast_ctx(self), merge))
return false;
/* create if instruction */
- if (!ir_block_create_if(cond, condval, ontrue, onfalse))
+ if (!ir_block_create_if(cond_out, ast_ctx(self), condval, ontrue, onfalse))
return false;
/* Now enter the merge block */
/* Here, now, we need a PHI node
* but first some sanity checking...
*/
- if (trueval->vtype != falseval->vtype) {
+ if (trueval->vtype != falseval->vtype && trueval->vtype != TYPE_NIL && falseval->vtype != TYPE_NIL) {
/* error("ternary with different types on the two sides"); */
+ compile_error(ast_ctx(self), "internal error: ternary operand types invalid");
return false;
}
/* create PHI */
- phi = ir_block_create_phi(merge, ast_function_label(func, "phi"), trueval->vtype);
- if (!phi)
+ phi = ir_block_create_phi(merge, ast_ctx(self), ast_function_label(func, "phi"), self->expression.vtype);
+ if (!phi) {
+ compile_error(ast_ctx(self), "internal error: failed to generate phi node");
return false;
- ir_phi_add(phi, ontrue, trueval);
- ir_phi_add(phi, onfalse, falseval);
+ }
+ ir_phi_add(phi, ontrue_out, trueval);
+ ir_phi_add(phi, onfalse_out, falseval);
self->expression.outr = ir_phi_value(phi);
*out = self->expression.outr;
+ codegen_output_type(self, *out);
+
return true;
}
ir_block *bcontinue = NULL;
ir_block *bbreak = NULL;
- ir_block *old_bcontinue = NULL;
- ir_block *old_bbreak = NULL;
-
ir_block *tmpblock = NULL;
(void)lvalue;
(void)out;
if (self->expression.outr) {
- asterror(ast_ctx(self), "internal error: ast_loop cannot be reused, it bears no result!");
+ compile_error(ast_ctx(self), "internal error: ast_loop cannot be reused, it bears no result!");
return false;
}
self->expression.outr = (ir_value*)1;
*/
if (self->initexpr)
{
- cgen = self->initexpr->expression.codegen;
+ cgen = self->initexpr->codegen;
if (!(*cgen)((ast_expression*)(self->initexpr), func, false, &dummy))
return false;
}
*/
if (self->precond)
{
- bprecond = ir_function_create_block(func->ir_func, ast_function_label(func, "pre_loop_cond"));
+ bprecond = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "pre_loop_cond"));
if (!bprecond)
return false;
func->curblock = bprecond;
/* generate */
- cgen = self->precond->expression.codegen;
+ cgen = self->precond->codegen;
if (!(*cgen)((ast_expression*)(self->precond), func, false, &precond))
return false;
* generate them this early for 'break' and 'continue'.
*/
if (self->increment) {
- bincrement = ir_function_create_block(func->ir_func, ast_function_label(func, "loop_increment"));
+ bincrement = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "loop_increment"));
if (!bincrement)
return false;
bcontinue = bincrement; /* increment comes before the pre-loop-condition */
}
if (self->postcond) {
- bpostcond = ir_function_create_block(func->ir_func, ast_function_label(func, "post_loop_cond"));
+ bpostcond = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "post_loop_cond"));
if (!bpostcond)
return false;
bcontinue = bpostcond; /* postcond comes before the increment */
}
bout_id = vec_size(func->ir_func->blocks);
- bout = ir_function_create_block(func->ir_func, ast_function_label(func, "after_loop"));
+ bout = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "after_loop"));
if (!bout)
return false;
bbreak = bout;
/* The loop body... */
- if (self->body)
+ /* if (self->body) */
{
- bbody = ir_function_create_block(func->ir_func, ast_function_label(func, "loop_body"));
+ bbody = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "loop_body"));
if (!bbody)
return false;
/* enter */
func->curblock = bbody;
- old_bbreak = func->breakblock;
- old_bcontinue = func->continueblock;
- func->breakblock = bbreak;
- func->continueblock = bcontinue;
+ vec_push(func->breakblocks, bbreak);
+ if (bcontinue)
+ vec_push(func->continueblocks, bcontinue);
+ else
+ vec_push(func->continueblocks, bbody);
/* generate */
- cgen = self->body->expression.codegen;
- if (!(*cgen)((ast_expression*)(self->body), func, false, &dummy))
- return false;
+ if (self->body) {
+ cgen = self->body->codegen;
+ if (!(*cgen)((ast_expression*)(self->body), func, false, &dummy))
+ return false;
+ }
end_bbody = func->curblock;
- func->breakblock = old_bbreak;
- func->continueblock = old_bcontinue;
+ vec_pop(func->breakblocks);
+ vec_pop(func->continueblocks);
}
/* post-loop-condition */
func->curblock = bpostcond;
/* generate */
- cgen = self->postcond->expression.codegen;
+ cgen = self->postcond->codegen;
if (!(*cgen)((ast_expression*)(self->postcond), func, false, &postcond))
return false;
func->curblock = bincrement;
/* generate */
- cgen = self->increment->expression.codegen;
+ cgen = self->increment->codegen;
if (!(*cgen)((ast_expression*)(self->increment), func, false, &dummy))
return false;
else if (bbody) tmpblock = bbody;
else if (bpostcond) tmpblock = bpostcond;
else tmpblock = bout;
- if (!ir_block_create_jump(bin, tmpblock))
+ if (!ir_block_create_jump(bin, ast_ctx(self), tmpblock))
return false;
/* From precond */
if (bprecond)
{
ir_block *ontrue, *onfalse;
- if (bbody) ontrue = bbody;
+ ontrue = bbody; /* can never be null */
+
+ /* all of this is dead code
else if (bincrement) ontrue = bincrement;
- else if (bpostcond) ontrue = bpostcond;
- else ontrue = bprecond;
+ else ontrue = bpostcond;
+ */
+
onfalse = bout;
- if (!ir_block_create_if(end_bprecond, precond, ontrue, onfalse))
+ if (self->pre_not) {
+ tmpblock = ontrue;
+ ontrue = onfalse;
+ onfalse = tmpblock;
+ }
+ if (!ir_block_create_if(end_bprecond, ast_ctx(self), precond, ontrue, onfalse))
return false;
}
if (bincrement) tmpblock = bincrement;
else if (bpostcond) tmpblock = bpostcond;
else if (bprecond) tmpblock = bprecond;
- else tmpblock = bout;
- if (!end_bbody->final && !ir_block_create_jump(end_bbody, tmpblock))
+ else tmpblock = bbody;
+ if (!end_bbody->final && !ir_block_create_jump(end_bbody, ast_ctx(self), tmpblock))
return false;
}
else if (bprecond) tmpblock = bprecond;
else if (bbody) tmpblock = bbody;
else tmpblock = bout;
- if (!ir_block_create_jump(end_bincrement, tmpblock))
+ if (!ir_block_create_jump(end_bincrement, ast_ctx(self), tmpblock))
return false;
}
{
ir_block *ontrue, *onfalse;
if (bprecond) ontrue = bprecond;
- else if (bbody) ontrue = bbody;
+ else ontrue = bbody; /* can never be null */
+
+ /* all of this is dead code
else if (bincrement) ontrue = bincrement;
else ontrue = bpostcond;
+ */
+
onfalse = bout;
- if (!ir_block_create_if(end_bpostcond, postcond, ontrue, onfalse))
+ if (self->post_not) {
+ tmpblock = ontrue;
+ ontrue = onfalse;
+ onfalse = tmpblock;
+ }
+ if (!ir_block_create_if(end_bpostcond, ast_ctx(self), postcond, ontrue, onfalse))
return false;
}
{
ir_block *target;
+ *out = NULL;
+
if (lvalue) {
- asterror(ast_ctx(self), "break/continue expression is not an l-value");
+ compile_error(ast_ctx(self), "break/continue expression is not an l-value");
return false;
}
if (self->expression.outr) {
- asterror(ast_ctx(self), "internal error: ast_breakcont cannot be reused!");
+ compile_error(ast_ctx(self), "internal error: ast_breakcont cannot be reused!");
return false;
}
self->expression.outr = (ir_value*)1;
if (self->is_continue)
- target = func->continueblock;
+ target = func->continueblocks[vec_size(func->continueblocks)-1-self->levels];
else
- target = func->breakblock;
+ target = func->breakblocks[vec_size(func->breakblocks)-1-self->levels];
- if (!ir_block_create_jump(func->curblock, target))
+ if (!target) {
+ compile_error(ast_ctx(self), "%s is lacking a target block", (self->is_continue ? "continue" : "break"));
+ return false;
+ }
+
+ if (!ir_block_create_jump(func->curblock, ast_ctx(self), target))
return false;
return true;
}
{
ast_expression_codegen *cgen;
- ast_switch_case *def_case = NULL;
- ir_block *def_bfall = NULL;
+ ast_switch_case *def_case = NULL;
+ ir_block *def_bfall = NULL;
+ ir_block *def_bfall_to = NULL;
+ bool set_def_bfall_to = false;
ir_value *dummy = NULL;
ir_value *irop = NULL;
- ir_block *old_break = NULL;
ir_block *bout = NULL;
ir_block *bfall = NULL;
size_t bout_id;
uint16_t cmpinstr;
if (lvalue) {
- asterror(ast_ctx(self), "switch expression is not an l-value");
+ compile_error(ast_ctx(self), "switch expression is not an l-value");
return false;
}
if (self->expression.outr) {
- asterror(ast_ctx(self), "internal error: ast_switch cannot be reused!");
+ compile_error(ast_ctx(self), "internal error: ast_switch cannot be reused!");
return false;
}
self->expression.outr = (ir_value*)1;
(void)lvalue;
(void)out;
- cgen = self->operand->expression.codegen;
+ cgen = self->operand->codegen;
if (!(*cgen)((ast_expression*)(self->operand), func, false, &irop))
return false;
return true;
cmpinstr = type_eq_instr[irop->vtype];
- if (cmpinstr >= AINSTR_END) {
+ if (cmpinstr >= VINSTR_END) {
ast_type_to_string(self->operand, typestr, sizeof(typestr));
- asterror(ast_ctx(self), "invalid type to perform a switch on: %s", typestr);
+ compile_error(ast_ctx(self), "invalid type to perform a switch on: %s", typestr);
return false;
}
bout_id = vec_size(func->ir_func->blocks);
- bout = ir_function_create_block(func->ir_func, ast_function_label(func, "after_switch"));
+ bout = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "after_switch"));
if (!bout)
return false;
/* setup the break block */
- old_break = func->breakblock;
- func->breakblock = bout;
+ vec_push(func->breakblocks, bout);
/* Now create all cases */
for (c = 0; c < vec_size(self->cases); ++c) {
if (swcase->value) {
/* A regular case */
/* generate the condition operand */
- cgen = swcase->value->expression.codegen;
+ cgen = swcase->value->codegen;
if (!(*cgen)((ast_expression*)(swcase->value), func, false, &val))
return false;
/* generate the condition */
- cond = ir_block_create_binop(func->curblock, ast_function_label(func, "switch_eq"), cmpinstr, irop, val);
+ cond = ir_block_create_binop(func->curblock, ast_ctx(self), ast_function_label(func, "switch_eq"), cmpinstr, irop, val);
if (!cond)
return false;
- bcase = ir_function_create_block(func->ir_func, ast_function_label(func, "case"));
+ bcase = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "case"));
bnot_id = vec_size(func->ir_func->blocks);
- bnot = ir_function_create_block(func->ir_func, ast_function_label(func, "not_case"));
+ bnot = ir_function_create_block(ast_ctx(self), func->ir_func, ast_function_label(func, "not_case"));
if (!bcase || !bnot)
return false;
- if (!ir_block_create_if(func->curblock, cond, bcase, bnot))
+ if (set_def_bfall_to) {
+ set_def_bfall_to = false;
+ def_bfall_to = bcase;
+ }
+ if (!ir_block_create_if(func->curblock, ast_ctx(self), cond, bcase, bnot))
return false;
/* Make the previous case-end fall through */
if (bfall && !bfall->final) {
- if (!ir_block_create_jump(bfall, bcase))
+ if (!ir_block_create_jump(bfall, ast_ctx(self), bcase))
return false;
}
/* enter the case */
func->curblock = bcase;
- cgen = swcase->code->expression.codegen;
+ cgen = swcase->code->codegen;
if (!(*cgen)((ast_expression*)swcase->code, func, false, &dummy))
return false;
bfall = NULL;
/* remember which case it was */
def_case = swcase;
+ /* And the next case will be remembered */
+ set_def_bfall_to = true;
}
}
/* Jump from the last bnot to bout */
- if (bfall && !bfall->final && !ir_block_create_jump(bfall, bout)) {
+ if (bfall && !bfall->final && !ir_block_create_jump(bfall, ast_ctx(self), bout)) {
/*
astwarning(ast_ctx(bfall), WARN_???, "missing break after last case");
*/
/* Insert the fallthrough jump */
if (def_bfall && !def_bfall->final) {
- if (!ir_block_create_jump(def_bfall, bcase))
+ if (!ir_block_create_jump(def_bfall, ast_ctx(self), bcase))
return false;
}
/* Now generate the default code */
- cgen = def_case->code->expression.codegen;
+ cgen = def_case->code->codegen;
if (!(*cgen)((ast_expression*)def_case->code, func, false, &dummy))
return false;
+
+ /* see if we need to fall through */
+ if (def_bfall_to && !func->curblock->final)
+ {
+ if (!ir_block_create_jump(func->curblock, ast_ctx(self), def_bfall_to))
+ return false;
+ }
}
/* Jump from the last bnot to bout */
- if (!func->curblock->final && !ir_block_create_jump(func->curblock, bout))
+ if (!func->curblock->final && !ir_block_create_jump(func->curblock, ast_ctx(self), bout))
return false;
/* enter the outgoing block */
func->curblock = bout;
/* restore the break block */
- func->breakblock = old_break;
+ vec_pop(func->breakblocks);
/* Move 'bout' to the end, it's nicer */
vec_remove(func->ir_func->blocks, bout_id, 1);
return true;
}
+bool ast_label_codegen(ast_label *self, ast_function *func, bool lvalue, ir_value **out)
+{
+ size_t i;
+ ir_value *dummy;
+
+ if (self->undefined) {
+ compile_error(ast_ctx(self), "internal error: ast_label never defined");
+ return false;
+ }
+
+ *out = NULL;
+ if (lvalue) {
+ compile_error(ast_ctx(self), "internal error: ast_label cannot be an lvalue");
+ return false;
+ }
+
+ /* simply create a new block and jump to it */
+ self->irblock = ir_function_create_block(ast_ctx(self), func->ir_func, self->name);
+ if (!self->irblock) {
+ compile_error(ast_ctx(self), "failed to allocate label block `%s`", self->name);
+ return false;
+ }
+ if (!func->curblock->final) {
+ if (!ir_block_create_jump(func->curblock, ast_ctx(self), self->irblock))
+ return false;
+ }
+
+ /* enter the new block */
+ func->curblock = self->irblock;
+
+ /* Generate all the leftover gotos */
+ for (i = 0; i < vec_size(self->gotos); ++i) {
+ if (!ast_goto_codegen(self->gotos[i], func, false, &dummy))
+ return false;
+ }
+
+ return true;
+}
+
+bool ast_goto_codegen(ast_goto *self, ast_function *func, bool lvalue, ir_value **out)
+{
+ *out = NULL;
+ if (lvalue) {
+ compile_error(ast_ctx(self), "internal error: ast_goto cannot be an lvalue");
+ return false;
+ }
+
+ if (self->target->irblock) {
+ if (self->irblock_from) {
+ /* we already tried once, this is the callback */
+ self->irblock_from->final = false;
+ if (!ir_block_create_goto(self->irblock_from, ast_ctx(self), self->target->irblock)) {
+ compile_error(ast_ctx(self), "failed to generate goto to `%s`", self->name);
+ return false;
+ }
+ }
+ else
+ {
+ if (!ir_block_create_goto(func->curblock, ast_ctx(self), self->target->irblock)) {
+ compile_error(ast_ctx(self), "failed to generate goto to `%s`", self->name);
+ return false;
+ }
+ }
+ }
+ else
+ {
+ /* the target has not yet been created...
+ * close this block in a sneaky way:
+ */
+ func->curblock->final = true;
+ self->irblock_from = func->curblock;
+ ast_label_register_goto(self->target, self);
+ }
+
+ return true;
+}
+
bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value **out)
{
ast_expression_codegen *cgen;
/* return values are never lvalues */
if (lvalue) {
- asterror(ast_ctx(self), "not an l-value (function call)");
+ compile_error(ast_ctx(self), "not an l-value (function call)");
return false;
}
return true;
}
- cgen = self->func->expression.codegen;
+ cgen = self->func->codegen;
if (!(*cgen)((ast_expression*)(self->func), func, false, &funval))
return false;
if (!funval)
ir_value *param;
ast_expression *expr = self->params[i];
- cgen = expr->expression.codegen;
+ cgen = expr->codegen;
if (!(*cgen)(expr, func, false, ¶m))
goto error;
if (!param)
vec_push(params, param);
}
- callinstr = ir_block_create_call(func->curblock, ast_function_label(func, "call"), funval);
+ /* varargs counter */
+ if (self->va_count) {
+ ir_value *va_count;
+ ir_builder *builder = func->curblock->owner->owner;
+ cgen = self->va_count->codegen;
+ if (!(*cgen)((ast_expression*)(self->va_count), func, false, &va_count))
+ return false;
+ if (!ir_block_create_store_op(func->curblock, ast_ctx(self), INSTR_STORE_F,
+ ir_builder_get_va_count(builder), va_count))
+ {
+ return false;
+ }
+ }
+
+ callinstr = ir_block_create_call(func->curblock, ast_ctx(self),
+ ast_function_label(func, "call"),
+ funval, !!(self->func->flags & AST_FLAG_NORETURN));
if (!callinstr)
goto error;
*out = ir_call_value(callinstr);
self->expression.outr = *out;
+ codegen_output_type(self, *out);
+
vec_free(params);
return true;
error:
projects / xonotic / gmqcc.git / blobdiff