X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ast.c;h=6e14bbc2184c8d8e7805495773b997c17d8aba0f;hp=16141b849ecd6e16d198edfc0a6b4a496197ae2a;hb=29db4a44edb5cce12197ae1e25129d38f70e0225;hpb=474d8bd6f042d21f01f3e28b9f53cb0e0181291f diff --git a/ast.c b/ast.c index 16141b8..6e14bbc 100644 --- a/ast.c +++ b/ast.c @@ -1,6 +1,7 @@ /* - * 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 @@ -36,15 +37,6 @@ ( (ast_node*)self )->node.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); -} - /* It must not be possible to get here. */ static GMQCC_NORETURN void _ast_node_destroy(ast_node *self) { @@ -80,8 +72,9 @@ static void ast_expression_init(ast_expression *self, self->expression.next = NULL; self->expression.outl = NULL; self->expression.outr = NULL; - self->expression.variadic = false; self->expression.params = NULL; + self->expression.count = 0; + self->expression.flags = 0; } static void ast_expression_delete(ast_expression *self) @@ -116,7 +109,8 @@ ast_value* ast_value_copy(const ast_value *self) } 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) { @@ -141,7 +135,8 @@ bool ast_type_adopt_impl(ast_expression *self, const ast_expression *other) } fromex = &other->expression; selfex = &self->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) @@ -192,7 +187,8 @@ ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex) 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) { @@ -208,14 +204,20 @@ ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex) bool ast_compare_type(ast_expression *a, ast_expression *b) { + if (a->expression.vtype == TYPE_NIL || + b->expression.vtype == TYPE_NIL) + return true; if (a->expression.vtype != b->expression.vtype) return false; if (!a->expression.next != !b->expression.next) return false; if (vec_size(a->expression.params) != vec_size(b->expression.params)) return false; - if (a->expression.variadic != b->expression.variadic) + if ((a->expression.flags & AST_FLAG_TYPE_MASK) != + (b->expression.flags & AST_FLAG_TYPE_MASK) ) + { return false; + } if (vec_size(a->expression.params)) { size_t i; for (i = 0; i < vec_size(a->expression.params); ++i) { @@ -331,7 +333,8 @@ ast_value* ast_value_new(lex_ctx ctx, const char *name, int t) self->name = name ? util_strdup(name) : NULL; self->expression.vtype = t; self->expression.next = NULL; - self->constant = false; + self->isfield = false; + self->cvq = CV_NONE; self->hasvalue = false; self->uses = 0; memset(&self->constval, 0, sizeof(self->constval)); @@ -342,6 +345,7 @@ ast_value* ast_value_new(lex_ctx ctx, const char *name, int t) self->setter = NULL; self->getter = NULL; + self->desc = NULL; return self; } @@ -369,6 +373,10 @@ void ast_value_delete(ast_value* self) } if (self->ir_values) mem_d(self->ir_values); + + if (self->desc) + mem_d(self->desc); + ast_expression_delete((ast_expression*)self); mem_d(self); } @@ -401,8 +409,13 @@ ast_binary* ast_binary_new(lex_ctx ctx, int op, 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; @@ -435,23 +448,20 @@ ast_binstore* ast_binstore_new(lex_ctx ctx, int storop, int 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; - } + self->keep_dest = false; + + if (!ast_type_adopt(self, left)) { + ast_delete(self); + return NULL; } - else - self->expression.next = NULL; 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); @@ -471,14 +481,14 @@ ast_unary* ast_unary_new(lex_ctx ctx, int op, 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); } @@ -507,7 +517,7 @@ void ast_return_delete(ast_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"); + 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); @@ -556,7 +566,7 @@ ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int fiel 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]); + compile_error(ctx, "member-access on an invalid owner of type %s", type_name[owner->expression.vtype]); mem_d(self); return NULL; } @@ -572,7 +582,8 @@ ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int fiel 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; @@ -598,6 +609,14 @@ void ast_member_delete(ast_member *self) 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; @@ -623,7 +642,7 @@ ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_exp } if (array->expression.vtype == TYPE_FIELD && outtype->expression.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; } @@ -677,6 +696,7 @@ void ast_ifthen_delete(ast_ifthen *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) { @@ -692,7 +712,9 @@ ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression * ast_propagate_effects(self, ontrue); ast_propagate_effects(self, onfalse); - if (!ast_type_adopt(self, ontrue)) { + if (ontrue->expression.vtype == TYPE_NIL) + exprtype = onfalse; + if (!ast_type_adopt(self, exprtype)) { ast_ternary_delete(self); return NULL; } @@ -711,8 +733,8 @@ void ast_ternary_delete(ast_ternary *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) { @@ -725,6 +747,9 @@ ast_loop* ast_loop_new(lex_ctx ctx, 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) @@ -755,12 +780,13 @@ void ast_loop_delete(ast_loop *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; } @@ -807,6 +833,7 @@ ast_label* ast_label_new(lex_ctx ctx, const char *name) self->name = util_strdup(name); self->irblock = NULL; + self->gotos = NULL; return self; } @@ -814,10 +841,40 @@ ast_label* ast_label_new(lex_ctx ctx, const char *name) 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); } +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) { @@ -829,9 +886,7 @@ ast_call* ast_call_new(lex_ctx ctx, self->params = NULL; self->func = funcexpr; - 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->expression.next); return self; } @@ -860,12 +915,13 @@ bool ast_call_check_types(ast_call *self) count = vec_size(func->expression.params); for (i = 0; i < count; ++i) { - if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) { + if (!ast_compare_type(self->params[i], (ast_expression*)(func->expression.params[i]))) + { char texp[1024]; char tgot[1024]; 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", + 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; @@ -886,16 +942,10 @@ ast_store* ast_store_new(lex_ctx ctx, int 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; - } + if (!ast_type_adopt(self, dest)) { + ast_delete(self); + return NULL; } - else - self->expression.next = NULL; return self; } @@ -921,10 +971,19 @@ ast_block* ast_block_new(lex_ctx ctx) return self; } -void ast_block_add_expr(ast_block *self, ast_expression *e) +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; + } + if (!ast_type_adopt(self, e)) { + compile_error(ast_ctx(self), "internal error: failed to adopt type"); + return false; + } + return true; } void ast_block_collect(ast_block *self, ast_expression *expr) @@ -953,14 +1012,8 @@ bool 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; + if (!ast_type_adopt(self, from)) + return false; return true; } @@ -972,7 +1025,7 @@ ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype) vtype->hasvalue || vtype->expression.vtype != TYPE_FUNCTION) { - asterror(ast_ctx(self), "internal error: ast_function_new condition %i %i type=%i", + 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); @@ -990,8 +1043,8 @@ ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype) self->ir_func = NULL; self->curblock = NULL; - self->breakblock = NULL; - self->continueblock = NULL; + self->breakblocks = NULL; + self->continueblocks = NULL; vtype->hasvalue = true; vtype->constval.vfunc = self; @@ -1016,6 +1069,8 @@ void ast_function_delete(ast_function *self) 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); mem_d(self); } @@ -1025,7 +1080,7 @@ const char* ast_function_label(ast_function *self, const char *prefix) size_t len; char *from; - if (!opts_dump && !opts_dumpfin) + if (!opts.dump && !opts.dumpfin && !opts.debug) return NULL; id = (self->labelcount++); @@ -1034,10 +1089,10 @@ const char* ast_function_label(ast_function *self, const char *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; } @@ -1049,10 +1104,24 @@ const char* ast_function_label(ast_function *self, const char *prefix) * But I can't imagine a pituation where the output is truly unnecessary. */ +void _ast_codegen_output_type(ast_expression_common *self, ir_value *out) +{ + if (out->vtype == TYPE_FIELD) + out->fieldtype = self->next->expression.vtype; + if (out->vtype == TYPE_FUNCTION) + out->outtype = self->next->expression.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 @@ -1061,9 +1130,9 @@ bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_valu * 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; @@ -1074,6 +1143,11 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) { ir_value *v = NULL; + 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); @@ -1092,7 +1166,7 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) ast_expression *fieldtype = self->expression.next; if (self->hasvalue) { - asterror(ast_ctx(self), "TODO: constant field pointers with value"); + compile_error(ast_ctx(self), "TODO: constant field pointers with value"); goto error; } @@ -1106,25 +1180,25 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) 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.max_array_size) + compile_error(ast_ctx(self), "Invalid array of size %lu", (unsigned long)array->expression.count); elemtype = &array->expression.next->expression; 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; namelen = strlen(self->name); @@ -1138,12 +1212,12 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) 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; } mem_d(name); } @@ -1167,17 +1241,17 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) int vtype = elemtype->vtype; /* 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.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; namelen = strlen(self->name); name = (char*)mem_a(namelen + 16); @@ -1190,12 +1264,12 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) 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; } mem_d(name); } @@ -1206,11 +1280,10 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) */ 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); } @@ -1230,21 +1303,34 @@ bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield) goto error; break; case TYPE_ARRAY: - asterror(ast_ctx(self), "TODO: global constant array"); + compile_error(ast_ctx(self), "TODO: global constant array"); 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 */ + v->cvq = self->cvq; self->ir_v = v; return true; @@ -1256,6 +1342,12 @@ error: /* clean up */ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) { ir_value *v = NULL; + + 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... @@ -1272,30 +1364,32 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) ast_expression_common *elemtype = &self->expression.next->expression; int vtype = elemtype->vtype; + func->flags |= IR_FLAG_HAS_ARRAYS; + if (param) { - asterror(ast_ctx(self), "array-parameters are not supported"); + 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.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), "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); @@ -1306,12 +1400,12 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) 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), "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; } } else @@ -1319,8 +1413,7 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) 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); } @@ -1343,31 +1436,71 @@ bool ast_local_codegen(ast_value *self, ir_function *func, bool param) 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) @@ -1381,7 +1514,7 @@ bool ast_function_codegen(ast_function *self, ir_builder *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), "ast_function's related ast_value was not generated yet"); return false; } @@ -1389,7 +1522,10 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) 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->expression.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; @@ -1402,13 +1538,13 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) } 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"); + 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; } @@ -1419,23 +1555,24 @@ bool ast_function_codegen(ast_function *self, ir_builder *ir) } /* 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) { - 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)) { /* error("missing return"); */ - asterror(ast_ctx(self), "function `%s` missing return value", self->name); - return false; + 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; } @@ -1455,7 +1592,7 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu * 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; } @@ -1476,19 +1613,21 @@ bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_valu 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.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]->expression.codegen; if (!(*gen)(self->exprs[i], func, false, out)) return false; } @@ -1524,7 +1663,7 @@ bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_valu ai = (ast_array_index*)self->dest; idx = (ast_value*)ai->index; - if (ast_istype(ai->index, ast_value) && idx->hasvalue) + if (ast_istype(ai->index, ast_value) && idx->hasvalue && idx->cvq == CV_CONST) ai = NULL; } @@ -1534,13 +1673,13 @@ bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_valu 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; } @@ -1556,7 +1695,7 @@ bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_valu 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); @@ -1578,7 +1717,7 @@ bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_valu 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; } @@ -1602,7 +1741,7 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va /* 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; } @@ -1611,7 +1750,7 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va 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 */ @@ -1619,89 +1758,95 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va 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")); + /* generate the left expression */ cgen = self->left->expression.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; + /* generate */ cgen = self->right->expression.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; } @@ -1713,11 +1858,12 @@ bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_va 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; } @@ -1748,7 +1894,7 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i ai = (ast_array_index*)self->dest; idx = (ast_value*)ai->index; - if (ast_istype(ai->index, ast_value) && idx->hasvalue) + if (ast_istype(ai->index, ast_value) && idx->hasvalue && idx->cvq == CV_CONST) ai = NULL; } @@ -1769,7 +1915,7 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i 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; @@ -1780,13 +1926,13 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i 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; } @@ -1794,7 +1940,7 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i if (!(*cgen)((ast_expression*)(arr->setter), func, true, &funval)) 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); @@ -1808,7 +1954,7 @@ bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, i return false; self->expression.outl = leftl; - if (!ir_block_create_store_op(func->curblock, self->opstore, leftl, bin)) + if (!ir_block_create_store_op(func->curblock, ast_ctx(self), self->opstore, leftl, bin)) return false; self->expression.outr = bin; } @@ -1832,7 +1978,7 @@ bool ast_unary_codegen(ast_unary *self, ast_function *func, bool lvalue, ir_valu /* 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; } @@ -1846,7 +1992,7 @@ bool ast_unary_codegen(ast_unary *self, ast_function *func, bool lvalue, ir_valu 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; @@ -1866,12 +2012,12 @@ bool ast_return_codegen(ast_return *self, ast_function *func, bool lvalue, ir_va * 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; @@ -1882,10 +2028,10 @@ bool ast_return_codegen(ast_return *self, ast_function *func, bool lvalue, ir_va 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; } @@ -1922,18 +2068,23 @@ bool ast_entfield_codegen(ast_entfield *self, ast_function *func, bool lvalue, i 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; @@ -1950,14 +2101,17 @@ bool ast_member_codegen(ast_member *self, ast_function *func, bool lvalue, ir_va 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)) + if (!(*cgen)((ast_expression*)(self->owner), func, false, &vec)) return false; if (vec->vtype != TYPE_VECTOR && @@ -1985,7 +2139,7 @@ bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lva } 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 @@ -1997,31 +2151,31 @@ bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lva arr = (ast_value*)self->array; idx = (ast_value*)self->index; - if (!ast_istype(self->index, ast_value) || !idx->hasvalue) { + 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)) + 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); @@ -2031,12 +2185,26 @@ bool ast_array_index_codegen(ast_array_index *self, ast_function *func, bool lva 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->expression.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->expression.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; } return true; @@ -2049,19 +2217,19 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va 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; @@ -2077,7 +2245,7 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va 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; @@ -2097,7 +2265,7 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va /* 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; @@ -2115,27 +2283,30 @@ bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_va 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; } @@ -2148,8 +2319,9 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ 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... */ @@ -2173,9 +2345,10 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ cgen = self->cond->expression.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 @@ -2187,10 +2360,12 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ cgen = self->on_true->expression.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 @@ -2202,20 +2377,22 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ cgen = self->on_false->expression.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 */ @@ -2224,21 +2401,26 @@ bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_ /* 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; } @@ -2267,16 +2449,13 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value 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; @@ -2305,7 +2484,7 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value */ 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; @@ -2329,7 +2508,7 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value * 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 */ @@ -2338,7 +2517,7 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value } 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 */ @@ -2347,34 +2526,37 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value } 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->expression.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 */ @@ -2414,7 +2596,7 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value 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 */ @@ -2426,7 +2608,12 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value else if (bpostcond) ontrue = bpostcond; else ontrue = bprecond; 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; } @@ -2436,8 +2623,8 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value 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; } @@ -2448,7 +2635,7 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value 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; } @@ -2461,7 +2648,12 @@ bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value 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; } @@ -2479,22 +2671,27 @@ bool ast_breakcont_codegen(ast_breakcont *self, ast_function *func, bool lvalue, *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; } @@ -2503,12 +2700,13 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va { 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; @@ -2518,12 +2716,12 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va 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; @@ -2541,18 +2739,17 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va cmpinstr = type_eq_instr[irop->vtype]; if (cmpinstr >= AINSTR_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) { @@ -2569,21 +2766,25 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va 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; } @@ -2607,11 +2808,13 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va 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"); */ @@ -2627,7 +2830,7 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va /* 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; } @@ -2635,16 +2838,23 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va cgen = def_case->code->expression.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); @@ -2655,25 +2865,73 @@ bool ast_switch_codegen(ast_switch *self, ast_function *func, bool lvalue, ir_va bool ast_label_codegen(ast_label *self, ast_function *func, bool lvalue, ir_value **out) { + size_t i; + ir_value *dummy; + *out = NULL; if (lvalue) { - asterror(ast_ctx(self), "internal error: ast_label cannot be an 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(func->ir_func, self->name); + self->irblock = ir_function_create_block(ast_ctx(self), func->ir_func, self->name); if (!self->irblock) { - asterror(ast_ctx(self), "failed to allocate label block `%s`", self->name); + 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, self->irblock)) + 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; } @@ -2688,7 +2946,7 @@ bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value /* 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; } @@ -2719,7 +2977,9 @@ bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value vec_push(params, param); } - callinstr = ir_block_create_call(func->curblock, ast_function_label(func, "call"), funval); + callinstr = ir_block_create_call(func->curblock, ast_ctx(self), + ast_function_label(func, "call"), + funval, !!(self->func->expression.flags & AST_FLAG_NORETURN)); if (!callinstr) goto error; @@ -2730,6 +2990,8 @@ bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value *out = ir_call_value(callinstr); self->expression.outr = *out; + codegen_output_type(self, *out); + vec_free(params); return true; error: