-/*
- * Copyright (C) 2012, 2013
- * Wolfgang Bumiller
- *
- * 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
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
- * so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
#ifndef GMQCC_AST_HDR
#define GMQCC_AST_HDR
+#include <vector>
#include "ir.h"
+typedef uint16_t ast_flag_t;
+
/* Note: I will not be using a _t suffix for the
* "main" ast node types for now.
*/
-typedef union ast_node_u ast_node;
-typedef union ast_expression_u ast_expression;
-
-typedef struct ast_value_s ast_value;
-typedef struct ast_function_s ast_function;
-typedef struct ast_block_s ast_block;
-typedef struct ast_binary_s ast_binary;
-typedef struct ast_store_s ast_store;
-typedef struct ast_binstore_s ast_binstore;
-typedef struct ast_entfield_s ast_entfield;
-typedef struct ast_ifthen_s ast_ifthen;
-typedef struct ast_ternary_s ast_ternary;
-typedef struct ast_loop_s ast_loop;
-typedef struct ast_call_s ast_call;
-typedef struct ast_unary_s ast_unary;
-typedef struct ast_return_s ast_return;
-typedef struct ast_member_s ast_member;
-typedef struct ast_array_index_s ast_array_index;
-typedef struct ast_breakcont_s ast_breakcont;
-typedef struct ast_switch_s ast_switch;
-typedef struct ast_label_s ast_label;
-typedef struct ast_goto_s ast_goto;
+struct ast_node;
+struct ast_expression;
+struct ast_value;
+struct ast_function;
+struct ast_block;
+struct ast_binary;
+struct ast_store;
+struct ast_binstore;
+struct ast_entfield;
+struct ast_ifthen;
+struct ast_ternary;
+struct ast_loop;
+struct ast_call;
+struct ast_unary;
+struct ast_return;
+struct ast_member;
+struct ast_array_index;
+struct ast_breakcont;
+struct ast_switch;
+struct ast_label;
+struct ast_goto;
+struct ast_argpipe;
+struct ast_state;
+
+enum {
+ AST_FLAG_VARIADIC = 1 << 0,
+ AST_FLAG_NORETURN = 1 << 1,
+ AST_FLAG_INLINE = 1 << 2,
+ AST_FLAG_INITIALIZED = 1 << 3,
+ AST_FLAG_DEPRECATED = 1 << 4,
+ AST_FLAG_INCLUDE_DEF = 1 << 5,
+ AST_FLAG_IS_VARARG = 1 << 6,
+ AST_FLAG_ALIAS = 1 << 7,
+ AST_FLAG_ERASEABLE = 1 << 8,
+ AST_FLAG_ACCUMULATE = 1 << 9,
+
+ /* An array declared as []
+ * so that the size is taken from the initializer
+ */
+ AST_FLAG_ARRAY_INIT = 1 << 10,
+
+ AST_FLAG_FINAL_DECL = 1 << 11,
+
+ /* Several coverage options
+ * AST_FLAG_COVERAGE means there was an explicit [[coverage]] attribute,
+ * which will overwrite the default set via the commandline switches.
+ * BLOCK_COVERAGE inserts coverage() calls into every basic block.
+ * In the future there might be more options like tracking variable access
+ * by creating get/set wrapper functions.
+ */
+ AST_FLAG_COVERAGE = 1 << 12,
+ AST_FLAG_BLOCK_COVERAGE = 1 << 13,
+
+ /*
+ * Propagates norefness to the IR so the unused (read/write) check can be
+ * more intelligently done.
+ */
+ AST_FLAG_NOREF = 1 << 14,
+
+ AST_FLAG_LAST,
+ AST_FLAG_TYPE_MASK = (AST_FLAG_VARIADIC | AST_FLAG_NORETURN),
+ AST_FLAG_COVERAGE_MASK = (AST_FLAG_BLOCK_COVERAGE)
+};
enum {
TYPE_ast_node, /* 0 */
TYPE_ast_breakcont, /* 17 */
TYPE_ast_switch, /* 18 */
TYPE_ast_label, /* 19 */
- TYPE_ast_goto /* 20 */
+ TYPE_ast_goto, /* 20 */
+ TYPE_ast_argpipe, /* 21 */
+ TYPE_ast_state /* 22 */
};
-#define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (TYPE_##t) )
-#define ast_ctx(node) (((ast_node_common*)(node))->context)
-#define ast_side_effects(node) (((ast_node_common*)(node))->side_effects)
+#define ast_istype(x, t) ( (x)->m_node_type == (TYPE_##t) )
-/* Node interface with common components
- */
-typedef void ast_node_delete(ast_node*);
-typedef struct
+struct ast_node
{
- lex_ctx context;
+ ast_node() = delete;
+ ast_node(lex_ctx_t, int nodetype);
+ virtual ~ast_node();
+
+ lex_ctx_t m_context;
/* I don't feel comfortable using keywords like 'delete' as names... */
- ast_node_delete *destroy;
- int nodetype;
- /* keep: if a node contains this node, 'keep'
+ int m_node_type;
+ /* keep_node: if a node contains this node, 'keep_node'
* prevents its dtor from destroying this node as well.
*/
- bool keep;
- bool side_effects;
-} ast_node_common;
-
-#define ast_delete(x) (*( ((ast_node*)(x))->node.destroy ))((ast_node*)(x))
-#define ast_unref(x) do \
-{ \
- if (! (((ast_node*)(x))->node.keep) ) { \
- ast_delete(x); \
- } \
+ bool m_keep_node;
+ bool m_side_effects;
+
+ void propagateSideEffects(const ast_node *other);
+};
+
+#define ast_unref(x) do \
+{ \
+ if (! (x)->m_keep_node ) { \
+ delete (x); \
+ } \
} while(0)
-/* Expression interface
- *
- * Any expression or block returns an ir_value, and needs
- * to know the current function.
- */
-typedef bool ast_expression_codegen(ast_expression*,
- ast_function*,
- bool lvalue,
- ir_value**);
+enum class ast_copy_type_t { value };
+static const ast_copy_type_t ast_copy_type = ast_copy_type_t::value;
+
/* TODO: the codegen function should take an output-type parameter
* indicating whether a variable, type, label etc. is expected, and
* an environment!
* type `expression`, so the ast_ident's codegen would search for
* variables through the environment (or functions, constants...).
*/
-typedef struct
-{
- ast_node_common node;
- ast_expression_codegen *codegen;
- int vtype;
- ast_expression *next;
+struct ast_expression : ast_node {
+ ast_expression() = delete;
+ ast_expression(lex_ctx_t ctx, int nodetype, qc_type vtype);
+ ast_expression(lex_ctx_t ctx, int nodetype);
+ ~ast_expression();
+
+ ast_expression(ast_copy_type_t, const ast_expression&);
+ ast_expression(ast_copy_type_t, lex_ctx_t ctx, const ast_expression&);
+ ast_expression(ast_copy_type_t, int nodetype, const ast_expression&);
+ ast_expression(ast_copy_type_t, int nodetype, lex_ctx_t ctx, const ast_expression&);
+
+ static ast_expression *shallowType(lex_ctx_t ctx, qc_type vtype);
+
+ bool compareType(const ast_expression &other) const;
+ void adoptType(const ast_expression &other);
+
+ qc_type m_vtype = TYPE_VOID;
+ ast_expression *m_next = nullptr;
/* arrays get a member-count */
- size_t count;
- ast_value* *params;
- uint32_t flags;
+ size_t m_count = 0;
+ std::vector<std::unique_ptr<ast_value>> m_type_params;
+
+ ast_flag_t m_flags = 0;
/* void foo(string...) gets varparam set as a restriction
* for variadic parameters
*/
- ast_expression *varparam;
+ ast_expression *m_varparam = nullptr;
/* The codegen functions should store their output values
* so we can call it multiple times without re-evaluating.
* Store lvalue and rvalue seperately though. So that
* ast_entfield for example can generate both if required.
*/
- ir_value *outl;
- ir_value *outr;
-} ast_expression_common;
-#define AST_FLAG_VARIADIC (1<<0)
-#define AST_FLAG_NORETURN (1<<1)
-#define AST_FLAG_INLINE (1<<2)
-#define AST_FLAG_INITIALIZED (1<<3)
-#define AST_FLAG_DEPRECATED (1<<4)
-#define AST_FLAG_INCLUDE_DEF (1<<5)
-#define AST_FLAG_IS_VARARG (1<<6)
-#define AST_FLAG_ALIAS (1<<7)
-#define AST_FLAG_TYPE_MASK (AST_FLAG_VARIADIC | AST_FLAG_NORETURN)
+ ir_value *m_outl = nullptr;
+ ir_value *m_outr = nullptr;
+
+ virtual bool codegen(ast_function *current, bool lvalue, ir_value **out);
+};
/* Value
*
* typedef float foo;
* is like creating a 'float foo', foo serving as the type's name.
*/
-struct ast_value_s
+union basic_value_t {
+ qcfloat_t vfloat;
+ int vint;
+ vec3_t vvec;
+ const char *vstring;
+ int ventity;
+ ast_function *vfunc;
+ ast_value *vfield;
+};
+
+struct ast_value : ast_expression
{
- ast_expression_common expression;
+ ast_value() = delete;
+ ast_value(lex_ctx_t ctx, const std::string &name, qc_type qctype);
+ ~ast_value();
- const char *name;
- const char *desc;
+ ast_value(ast_copy_type_t, const ast_expression&, const std::string&);
+ ast_value(ast_copy_type_t, const ast_value&);
+ ast_value(ast_copy_type_t, const ast_value&, const std::string&);
- const char *argcounter;
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
- /*
- int vtype;
- ast_value *next;
- */
-
- int cvq; /* const/var qualifier */
- bool isfield; /* this declares a field */
- bool isimm; /* an immediate, not just const */
- bool hasvalue;
- union {
- double vfloat;
- int vint;
- vector vvec;
- const char *vstring;
- int ventity;
- ast_function *vfunc;
- ast_value *vfield;
- } constval;
-
- /* usecount for the parser */
- size_t uses;
-
- ir_value *ir_v;
- ir_value **ir_values;
- size_t ir_value_count;
+ void addParam(ast_value*);
- /* ONLY for arrays in progs version up to 6 */
- ast_value *setter;
- ast_value *getter;
-};
+ bool generateGlobal(ir_builder*, bool isfield);
+ bool generateLocal(ir_function*, bool param);
+ bool generateAccessors(ir_builder*);
+
+ std::string m_name;
+ std::string m_desc;
-ast_value* ast_value_new(lex_ctx ctx, const char *name, int qctype);
-ast_value* ast_value_copy(const ast_value *self);
-/* This will NOT delete an underlying ast_function */
-void ast_value_delete(ast_value*);
+ const char *m_argcounter = nullptr;
-bool ast_value_set_name(ast_value*, const char *name);
+ int m_cvq = CV_NONE; /* const/var qualifier */
+ bool m_isfield = false; /* this declares a field */
+ bool m_isimm = false; /* an immediate, not just const */
+ bool m_hasvalue = false;
+ bool m_inexact = false; /* inexact coming from folded expression */
+ basic_value_t m_constval;
+ /* for TYPE_ARRAY we have an optional vector
+ * of constants when an initializer list
+ * was provided.
+ */
+ std::vector<basic_value_t> m_initlist;
+
+ ir_value *m_ir_v = nullptr;
+ std::vector<ir_value*> m_ir_values;
+ size_t m_ir_value_count = 0;
+
+ /* ONLY for arrays in progs version up to 6 */
+ ast_value *m_setter = nullptr;
+ ast_value *m_getter = nullptr;
-bool ast_value_codegen(ast_value*, ast_function*, bool lvalue, ir_value**);
-bool ast_local_codegen(ast_value *self, ir_function *func, bool isparam);
-bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield);
+ bool m_intrinsic = false; /* true if associated with intrinsic */
-void ast_value_params_add(ast_value*, ast_value*);
+private:
+ bool generateGlobalFunction(ir_builder*);
+ bool generateGlobalField(ir_builder*);
+ ir_value *prepareGlobalArray(ir_builder*);
+ bool setGlobalArray();
+ bool checkArray(const ast_value &array) const;
+};
-bool ast_compare_type(ast_expression *a, ast_expression *b);
-ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex);
-#define ast_type_adopt(a, b) ast_type_adopt_impl((ast_expression*)(a), (ast_expression*)(b))
-void ast_type_adopt_impl(ast_expression *self, const ast_expression *other);
-void ast_type_to_string(ast_expression *e, char *buf, size_t bufsize);
+void ast_type_to_string(const ast_expression *e, char *buf, size_t bufsize);
-typedef enum ast_binary_ref_s {
+enum ast_binary_ref {
+ AST_REF_NONE = 0,
AST_REF_LEFT = 1 << 1,
AST_REF_RIGHT = 1 << 2,
AST_REF_ALL = (AST_REF_LEFT | AST_REF_RIGHT)
-} ast_binary_ref;
+};
/* Binary
*
* A value-returning binary expression.
*/
-struct ast_binary_s
+struct ast_binary : ast_expression
{
- ast_expression_common expression;
+ ast_binary() = delete;
+ ast_binary(lex_ctx_t ctx, int op, ast_expression *l, ast_expression *r);
+ ~ast_binary();
- int op;
- ast_expression *left;
- ast_expression *right;
- ast_binary_ref refs;
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+ int m_op;
+ ast_expression *m_left;
+ ast_expression *m_right;
+ ast_binary_ref m_refs;
+ bool m_right_first;
};
-ast_binary* ast_binary_new(lex_ctx ctx,
- int op,
- ast_expression *left,
- ast_expression *right);
-void ast_binary_delete(ast_binary*);
-
-bool ast_binary_codegen(ast_binary*, ast_function*, bool lvalue, ir_value**);
/* Binstore
*
* An assignment including a binary expression with the source as left operand.
* Eg. a += b; is a binstore { INSTR_STORE, INSTR_ADD, a, b }
*/
-struct ast_binstore_s
+struct ast_binstore : ast_expression
{
- ast_expression_common expression;
+ ast_binstore() = delete;
+ ast_binstore(lex_ctx_t ctx, int storeop, int mathop, ast_expression *l, ast_expression *r);
+ ~ast_binstore();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
- int opstore;
- int opbin;
- ast_expression *dest;
- ast_expression *source;
+ int m_opstore;
+ int m_opbin;
+ ast_expression *m_dest;
+ ast_expression *m_source;
/* for &~= which uses the destination in a binary in source we can use this */
- bool keep_dest;
+ bool m_keep_dest;
};
-ast_binstore* ast_binstore_new(lex_ctx ctx,
- int storeop,
- int op,
- ast_expression *left,
- ast_expression *right);
-void ast_binstore_delete(ast_binstore*);
-
-bool ast_binstore_codegen(ast_binstore*, ast_function*, bool lvalue, ir_value**);
/* Unary
*
* Regular unary expressions: not,neg
*/
-struct ast_unary_s
+struct ast_unary : ast_expression
{
- ast_expression_common expression;
+ ast_unary() = delete;
+ ~ast_unary();
- int op;
- ast_expression *operand;
-};
-ast_unary* ast_unary_new(lex_ctx ctx,
- int op,
- ast_expression *expr);
-void ast_unary_delete(ast_unary*);
+ static ast_unary* make(lex_ctx_t ctx, int op, ast_expression *expr);
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ int m_op;
+ ast_expression *m_operand;
-bool ast_unary_codegen(ast_unary*, ast_function*, bool lvalue, ir_value**);
+private:
+ ast_unary(lex_ctx_t ctx, int op, ast_expression *expr);
+};
/* Return
*
* will refuse to create further instructions.
* This should be honored by the parser.
*/
-struct ast_return_s
+struct ast_return : ast_expression
{
- ast_expression_common expression;
- ast_expression *operand;
-};
-ast_return* ast_return_new(lex_ctx ctx,
- ast_expression *expr);
-void ast_return_delete(ast_return*);
+ ast_return() = delete;
+ ast_return(lex_ctx_t ctx, ast_expression *expr);
+ ~ast_return();
-bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**);
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_operand;
+};
/* Entity-field
*
* For this we will have to extend the codegen() functions with
* a flag saying whether or not we need an L or an R-value.
*/
-struct ast_entfield_s
+struct ast_entfield : ast_expression
{
- ast_expression_common expression;
- /* The entity can come from an expression of course. */
- ast_expression *entity;
- /* As can the field, it just must result in a value of TYPE_FIELD */
- ast_expression *field;
-};
-ast_entfield* ast_entfield_new(lex_ctx ctx, ast_expression *entity, ast_expression *field);
-ast_entfield* ast_entfield_new_force(lex_ctx ctx, ast_expression *entity, ast_expression *field, const ast_expression *outtype);
-void ast_entfield_delete(ast_entfield*);
+ ast_entfield() = delete;
+ ast_entfield(lex_ctx_t ctx, ast_expression *entity, ast_expression *field);
+ ast_entfield(lex_ctx_t ctx, ast_expression *entity, ast_expression *field, const ast_expression *outtype);
+ ~ast_entfield();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
-bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**);
+ // The entity can come from an expression of course.
+ ast_expression *m_entity;
+ // As can the field, it just must result in a value of TYPE_FIELD
+ ast_expression *m_field;
+};
/* Member access:
*
* For now used for vectors. If we get structs or unions
* we can have them handled here as well.
*/
-struct ast_member_s
+struct ast_member : ast_expression
{
- ast_expression_common expression;
- ast_expression *owner;
- unsigned int field;
- const char *name;
- bool rvalue;
-};
-ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field, const char *name);
-void ast_member_delete(ast_member*);
-bool ast_member_set_name(ast_member*, const char *name);
+ static ast_member *make(lex_ctx_t ctx, ast_expression *owner, unsigned int field, const std::string &name);
+ ~ast_member();
-bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**);
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_owner;
+ unsigned int m_field;
+ std::string m_name;
+ bool m_rvalue;
+
+private:
+ ast_member() = delete;
+ ast_member(lex_ctx_t ctx, ast_expression *owner, unsigned int field, const std::string &name);
+};
/* Array index access:
*
* In any case, accessing an element via a compiletime-constant index will
* result in quick access to that variable.
*/
-struct ast_array_index_s
+struct ast_array_index : ast_expression
{
- ast_expression_common expression;
- ast_expression *array;
- ast_expression *index;
+ static ast_array_index* make(lex_ctx_t ctx, ast_expression *array, ast_expression *index);
+ ~ast_array_index();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_array;
+ ast_expression *m_index;
+private:
+ ast_array_index() = delete;
+ ast_array_index(lex_ctx_t ctx, ast_expression *array, ast_expression *index);
};
-ast_array_index* ast_array_index_new(lex_ctx ctx, ast_expression *array, ast_expression *index);
-void ast_array_index_delete(ast_array_index*);
-bool ast_array_index_codegen(ast_array_index*, ast_function*, bool lvalue, ir_value**);
+/* Vararg pipe node:
+ *
+ * copy all varargs starting from a specific index
+ */
+struct ast_argpipe : ast_expression
+{
+ ast_argpipe() = delete;
+ ast_argpipe(lex_ctx_t ctx, ast_expression *index);
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ~ast_argpipe();
+ ast_expression *m_index;
+};
/* Store
*
* Stores left<-right and returns left.
* Specialized binary expression node
*/
-struct ast_store_s
+struct ast_store : ast_expression
{
- ast_expression_common expression;
- int op;
- ast_expression *dest;
- ast_expression *source;
-};
-ast_store* ast_store_new(lex_ctx ctx, int op,
- ast_expression *d, ast_expression *s);
-void ast_store_delete(ast_store*);
+ ast_store() = delete;
+ ast_store(lex_ctx_t ctx, int op, ast_expression *d, ast_expression *s);
+ ~ast_store();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
-bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**);
+ int m_op;
+ ast_expression *m_dest;
+ ast_expression *m_source;
+};
/* If
*
- * A general 'if then else' statement, either side can be NULL and will
- * thus be omitted. It is an error for *both* cases to be NULL at once.
+ * A general 'if then else' statement, either side can be nullptr and will
+ * thus be omitted. It is an error for *both* cases to be nullptr at once.
*
* During its 'codegen' it'll be changing the ast_function's block.
*
- * An if is also an "expression". Its codegen will put NULL into the
+ * An if is also an "expression". Its codegen will put nullptr into the
* output field though. For ternary expressions an ast_ternary will be
* added.
*/
-struct ast_ifthen_s
+struct ast_ifthen : ast_expression
{
- ast_expression_common expression;
- ast_expression *cond;
+ ast_ifthen() = delete;
+ ast_ifthen(lex_ctx_t ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse);
+ ~ast_ifthen();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_cond;
/* It's all just 'expressions', since an ast_block is one too. */
- ast_expression *on_true;
- ast_expression *on_false;
+ ast_expression *m_on_true;
+ ast_expression *m_on_false;
};
-ast_ifthen* ast_ifthen_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse);
-void ast_ifthen_delete(ast_ifthen*);
-
-bool ast_ifthen_codegen(ast_ifthen*, ast_function*, bool lvalue, ir_value**);
/* Ternary expressions...
*
* a PHI node.
*
* The other difference is that in an ast_ternary, NEITHER side
- * must be NULL, there's ALWAYS an else branch.
+ * must be nullptr, there's ALWAYS an else branch.
*
* This is the only ast_node beside ast_value which contains
* an ir_value. Theoretically we don't need to remember it though.
*/
-struct ast_ternary_s
+struct ast_ternary : ast_expression
{
- ast_expression_common expression;
- ast_expression *cond;
+ ast_ternary() = delete;
+ ast_ternary(lex_ctx_t ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse);
+ ~ast_ternary();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_cond;
/* It's all just 'expressions', since an ast_block is one too. */
- ast_expression *on_true;
- ast_expression *on_false;
+ ast_expression *m_on_true;
+ ast_expression *m_on_false;
};
-ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse);
-void ast_ternary_delete(ast_ternary*);
-
-bool ast_ternary_codegen(ast_ternary*, ast_function*, bool lvalue, ir_value**);
/* A general loop node
*
{inc};
}
*/
-struct ast_loop_s
+struct ast_loop : ast_expression
{
- ast_expression_common expression;
- ast_expression *initexpr;
- ast_expression *precond;
- ast_expression *postcond;
- ast_expression *increment;
- ast_expression *body;
+ ast_loop() = delete;
+ ast_loop(lex_ctx_t ctx,
+ ast_expression *initexpr,
+ ast_expression *precond, bool pre_not,
+ ast_expression *postcond, bool post_not,
+ ast_expression *increment,
+ ast_expression *body);
+ ~ast_loop();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_initexpr;
+ ast_expression *m_precond;
+ ast_expression *m_postcond;
+ ast_expression *m_increment;
+ ast_expression *m_body;
/* For now we allow a seperate flag on whether or not the condition
* is supposed to be true or false.
* That way, the parser can generate a 'while not(!x)' for `while(x)`
* if desired, which is useful for the new -f{true,false}-empty-strings
* flag.
*/
- bool pre_not;
- bool post_not;
+ bool m_pre_not;
+ bool m_post_not;
};
-ast_loop* ast_loop_new(lex_ctx ctx,
- ast_expression *initexpr,
- ast_expression *precond, bool pre_not,
- ast_expression *postcond, bool post_not,
- ast_expression *increment,
- ast_expression *body);
-void ast_loop_delete(ast_loop*);
-
-bool ast_loop_codegen(ast_loop*, ast_function*, bool lvalue, ir_value**);
/* Break/Continue
*/
-struct ast_breakcont_s
+struct ast_breakcont : ast_expression
{
- ast_expression_common expression;
- bool is_continue;
- unsigned int levels;
-};
-ast_breakcont* ast_breakcont_new(lex_ctx ctx, bool iscont, unsigned int levels);
-void ast_breakcont_delete(ast_breakcont*);
+ ast_breakcont() = delete;
+ ast_breakcont(lex_ctx_t ctx, bool iscont, unsigned int levels);
+ ~ast_breakcont();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
-bool ast_breakcont_codegen(ast_breakcont*, ast_function*, bool lvalue, ir_value**);
+
+ bool m_is_continue;
+ unsigned int m_levels;
+};
/* Switch Statements
*
* be expected from it.
* TODO: Ticket #20
*/
-typedef struct {
- ast_expression *value; /* #20 will replace this */
- ast_expression *code;
-} ast_switch_case;
-struct ast_switch_s
+struct ast_switch_case {
+ ast_expression *m_value; /* #20 will replace this */
+ ast_expression *m_code;
+};
+
+struct ast_switch : ast_expression
{
- ast_expression_common expression;
+ ast_switch() = delete;
+ ast_switch(lex_ctx_t ctx, ast_expression *op);
+ ~ast_switch();
- ast_expression *operand;
- ast_switch_case *cases;
-};
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
-ast_switch* ast_switch_new(lex_ctx ctx, ast_expression *op);
-void ast_switch_delete(ast_switch*);
+ ast_expression *m_operand;
+ std::vector<ast_switch_case> m_cases;
+};
-bool ast_switch_codegen(ast_switch*, ast_function*, bool lvalue, ir_value**);
/* Label nodes
*
* Introduce a label which can be used together with 'goto'
*/
-struct ast_label_s
+struct ast_label : ast_expression
{
- ast_expression_common expression;
- const char *name;
- ir_block *irblock;
- ast_goto **gotos;
- /* means it has not yet been defined */
- bool undefined;
-};
+ ast_label() = delete;
+ ast_label(lex_ctx_t ctx, const std::string &name, bool undefined);
+ ~ast_label();
-ast_label* ast_label_new(lex_ctx ctx, const char *name, bool undefined);
-void ast_label_delete(ast_label*);
-void ast_label_register_goto(ast_label*, ast_goto*);
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
-bool ast_label_codegen(ast_label*, ast_function*, bool lvalue, ir_value**);
+ std::string m_name;
+ ir_block *m_irblock;
+ std::vector<ast_goto*> m_gotos;
+
+ /* means it has not yet been defined */
+ bool m_undefined;
+
+private:
+ void registerGoto(ast_goto*);
+ friend struct ast_goto;
+};
/* GOTO nodes
*
* Go to a label, the label node is filled in at a later point!
*/
-struct ast_goto_s
+struct ast_goto : ast_expression
{
- ast_expression_common expression;
- const char *name;
- ast_label *target;
- ir_block *irblock_from;
+ ast_goto() = delete;
+ ast_goto(lex_ctx_t ctx, const std::string &name);
+ ~ast_goto();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ void setLabel(ast_label*);
+
+ std::string m_name;
+ ast_label *m_target;
+ ir_block *m_irblock_from;
};
-ast_goto* ast_goto_new(lex_ctx ctx, const char *name);
-void ast_goto_delete(ast_goto*);
-void ast_goto_set_label(ast_goto*, ast_label*);
+/* STATE node
+ *
+ * For frame/think state updates: void foo() [framenum, nextthink] {}
+ */
+struct ast_state : ast_expression
+{
+ ast_state() = delete;
+ ast_state(lex_ctx_t ctx, ast_expression *frame, ast_expression *think);
+ ~ast_state();
-bool ast_goto_codegen(ast_goto*, ast_function*, bool lvalue, ir_value**);
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ ast_expression *m_framenum;
+ ast_expression *m_nextthink;
+};
/* CALL node
*
* Additionally it contains a list of ast_expressions as parameters.
* Since calls can return values, an ast_call is also an ast_expression.
*/
-struct ast_call_s
+struct ast_call : ast_expression
{
- ast_expression_common expression;
- ast_expression *func;
- ast_expression* *params;
- ast_expression *va_count;
+ ast_call() = delete;
+ static ast_call *make(lex_ctx_t, ast_expression*);
+ ~ast_call();
+
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
+
+ bool checkTypes(ast_expression *this_func_va_type) const;
+
+ ast_expression *m_func;
+ std::vector<ast_expression *> m_params;
+ ast_expression *m_va_count;
+
+private:
+ ast_call(lex_ctx_t ctx, ast_expression *funcexpr);
+ bool checkVararg(ast_expression *va_type, ast_expression *exp_type) const;
};
-ast_call* ast_call_new(lex_ctx ctx,
- ast_expression *funcexpr);
-void ast_call_delete(ast_call*);
-bool ast_call_codegen(ast_call*, ast_function*, bool lvalue, ir_value**);
-bool ast_call_check_types(ast_call*);
/* Blocks
*
*/
-struct ast_block_s
+struct ast_block : ast_expression
{
- ast_expression_common expression;
+ ast_block() = delete;
+ ast_block(lex_ctx_t ctx);
+ ~ast_block();
- ast_value* *locals;
- ast_expression* *exprs;
- ast_expression* *collect;
-};
-ast_block* ast_block_new(lex_ctx ctx);
-void ast_block_delete(ast_block*);
-void ast_block_set_type(ast_block*, ast_expression *from);
+ bool codegen(ast_function *current, bool lvalue, ir_value **out) override;
-bool ast_block_codegen(ast_block*, ast_function*, bool lvalue, ir_value**);
-void ast_block_collect(ast_block*, ast_expression*);
+ std::vector<ast_value*> m_locals;
+ std::vector<ast_expression*> m_exprs;
+ std::vector<ast_expression*> m_collect;
-bool GMQCC_WARN ast_block_add_expr(ast_block*, ast_expression*);
+ void setType(const ast_expression &from);
+ bool GMQCC_WARN addExpr(ast_expression*);
+ void collect(ast_expression*);
+};
/* Function
*
* neither functions inside functions, nor lambdas, and function
* pointers could just work with a name. However, this way could be
* more flexible, and adds no real complexity.
+ *
+ * The destructor will NOT delete the underlying ast_value
+ *
*/
-struct ast_function_s
+struct ast_function : ast_node
{
- ast_node_common node;
+ ast_function() = delete;
+ static ast_function *make(lex_ctx_t ctx, const std::string &name, ast_value *vtype);
+ ~ast_function();
- ast_value *vtype;
- const char *name;
+ const char* makeLabel(const char *prefix);
+ virtual bool generateFunction(ir_builder*);
- int builtin;
+ ast_value *m_function_type = nullptr;
+ std::string m_name;
- ir_function *ir_func;
- ir_block *curblock;
- ir_block **breakblocks;
- ir_block **continueblocks;
+ int m_builtin = 0;
-#if 0
- /* In order for early-out logic not to go over
- * excessive jumps, we remember their target
- * blocks...
- */
- ir_block *iftrue;
- ir_block *iffalse;
-#endif
+ /* list of used-up names for statics without the count suffix */
+ std::vector<std::string> m_static_names;
+ /* number of static variables, by convention this includes the
+ * ones without the count-suffix - remember this when dealing
+ * with savegames. uint instead of size_t as %zu in printf is
+ * C99, so no windows support. */
+ unsigned int m_static_count = 0;
- size_t labelcount;
+ ir_function *m_ir_func = nullptr;
+ ir_block *m_curblock = nullptr;
+ std::vector<ir_block*> m_breakblocks;
+ std::vector<ir_block*> m_continueblocks;
+
+ size_t m_labelcount = 0;
/* in order for thread safety - for the optional
* channel abesed multithreading... keeping a buffer
* here to use in ast_function_label.
*/
- char labelbuf[64];
+ std::vector<std::unique_ptr<ast_block>> m_blocks;
+ std::unique_ptr<ast_value> m_varargs;
+ std::unique_ptr<ast_value> m_argc;
+ ast_value *m_fixedparams = nullptr; // these use unref()
+ ast_value *m_return_value = nullptr;
- ast_block* *blocks;
+private:
+ ast_function(lex_ctx_t ctx, const std::string &name, ast_value *vtype);
- ast_value *varargs;
- ast_value *argc;
- ast_value *fixedparams;
+ char m_labelbuf[64];
};
-ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype);
-/* This will NOT delete the underlying ast_value */
-void ast_function_delete(ast_function*);
-/* For "optimized" builds this can just keep returning "foo"...
- * or whatever...
- */
-const char* ast_function_label(ast_function*, const char *prefix);
-bool ast_function_codegen(ast_function *self, ir_builder *builder);
-bool ast_generate_accessors(ast_value *asvalue, ir_builder *ir);
-
-/* Expression union
- */
-union ast_expression_u
-{
- ast_expression_common expression;
-
- ast_value value;
- ast_binary binary;
- ast_block block;
- ast_ternary ternary;
- ast_ifthen ifthen;
- ast_store store;
- ast_entfield entfield;
-};
-
-/* Node union
+/*
+ * If the condition creates a situation where this becomes -1 size it means there are
+ * more AST_FLAGs than the type ast_flag_t is capable of holding. So either eliminate
+ * the AST flag count or change the ast_flag_t typedef to a type large enough to accomodate
+ * all the flags.
*/
-union ast_node_u
-{
- ast_node_common node;
- ast_expression expression;
-};
-
+typedef int static_assert_is_ast_flag_safe [((AST_FLAG_LAST) <= (ast_flag_t)(-1)) ? 1 : -1];
#endif
projects / xonotic / gmqcc.git / blobdiff