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;
+
+enum {
+ TYPE_ast_node,
+ TYPE_ast_expression,
+ TYPE_ast_value,
+ TYPE_ast_function,
+ TYPE_ast_block,
+ TYPE_ast_binary,
+ TYPE_ast_store,
+ TYPE_ast_entfield,
+ TYPE_ast_ifthen,
+ TYPE_ast_ternary,
+ TYPE_ast_loop,
+ TYPE_ast_call,
+ TYPE_ast_unary,
+ TYPE_ast_return
+};
+
+#define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (t) )
/* Node interface with common components
*/
lex_ctx 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'
* prevents its dtor from destroying this node as well.
*/
{
ast_node_common node;
ast_expression_codegen *codegen;
+ int vtype;
+ ast_expression *next;
+ MEM_VECTOR_MAKE(ast_value*, params);
} ast_expression_common;
+MEM_VECTOR_PROTO(ast_expression_common, ast_value*, params);
/* Value
*
const char *name;
+ /*
int vtype;
ast_value *next;
+ */
bool isconst;
union {
const char *vstring;
int ventity;
ast_function *vfunc;
+ quaternion vquat;
+ matrix vmat;
} constval;
ir_value *ir_v;
-
- /* if vtype is qc_function, params contain parameters, and
- * 'next' the return type.
- */
- MEM_VECTOR_MAKE(ast_value*, params);
};
+
ast_value* ast_value_new(lex_ctx ctx, const char *name, int qctype);
/* This will NOT delete an underlying ast_function */
void ast_value_delete(ast_value*);
bool ast_value_set_name(ast_value*, const char *name);
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 GMQCC_WARN ast_value_params_add(ast_value*, ast_value*);
/* Binary
*
bool ast_binary_codegen(ast_binary*, ast_function*, bool lvalue, ir_value**);
+/* Unary
+ *
+ * Regular unary expressions: not,neg
+ */
+struct ast_unary_s
+{
+ ast_expression_common expression;
+
+ int op;
+ ast_expression *operand;
+};
+ast_unary* ast_unary_new(lex_ctx ctx,
+ int op,
+ ast_expression *expr);
+void ast_unary_delete(ast_unary*);
+
+bool ast_unary_codegen(ast_unary*, ast_function*, bool lvalue, ir_value**);
+
+/* Return
+ *
+ * Make sure 'return' only happens at the end of a block, otherwise the IR
+ * will refuse to create further instructions.
+ * This should be honored by the parser.
+ */
+struct ast_return_s
+{
+ ast_expression_common expression;
+ ast_expression *operand;
+};
+ast_return* ast_return_new(lex_ctx ctx,
+ ast_expression *expr);
+void ast_return_delete(ast_return*);
+
+bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**);
+
/* Entity-field
*
* This must do 2 things:
{
ast_expression_common expression;
int op;
- ast_value *dest; /* When we add pointers this might have to change to expression */
+ ast_expression *dest;
ast_expression *source;
};
ast_store* ast_store_new(lex_ctx ctx, int op,
- ast_value *d, ast_expression *s);
+ ast_expression *d, ast_expression *s);
void ast_store_delete(ast_store*);
bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**);
bool ast_ternary_codegen(ast_ternary*, ast_function*, bool lvalue, ir_value**);
+/* A general loop node
+ *
+ * For convenience it contains 4 parts:
+ * -) (ini) = initializing expression
+ * -) (pre) = pre-loop condition
+ * -) (pst) = post-loop condition
+ * -) (inc) = "increment" expression
+ * The following is a psudo-representation of this loop
+ * note that '=>' bears the logical meaning of "implies".
+ * (a => b) equals (!a || b)
+
+{ini};
+while (has_pre => {pre})
+{
+ {body};
+
+continue: // a 'continue' will jump here
+ if (has_pst => {pst})
+ break;
+
+ {inc};
+}
+ */
+struct ast_loop_s
+{
+ ast_expression_common expression;
+ ast_expression *initexpr;
+ ast_expression *precond;
+ ast_expression *postcond;
+ ast_expression *increment;
+ ast_expression *body;
+};
+ast_loop* ast_loop_new(lex_ctx ctx,
+ ast_expression *initexpr,
+ ast_expression *precond,
+ ast_expression *postcond,
+ ast_expression *increment,
+ ast_expression *body);
+void ast_loop_delete(ast_loop*);
+
+bool ast_loop_codegen(ast_loop*, ast_function*, bool lvalue, ir_value**);
+
+/* CALL node
+ *
+ * Contains an ast_expression as target, rather than an ast_function/value.
+ * Since it's how QC works, every ast_function has an ast_value
+ * associated anyway - in other words, the VM contains function
+ * pointers for every function anyway. Thus, this node will call
+ * expression.
+ * 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
+{
+ ast_expression_common expression;
+ ast_expression *func;
+ MEM_VECTOR_MAKE(ast_expression*, params);
+};
+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**);
+
+MEM_VECTOR_PROTO(ast_call, ast_expression*, params);
/* Blocks
*
};
ast_block* ast_block_new(lex_ctx ctx);
void ast_block_delete(ast_block*);
+bool ast_block_set_type(ast_block*, ast_expression *from);
MEM_VECTOR_PROTO(ast_block, ast_value*, locals);
MEM_VECTOR_PROTO(ast_block, ast_expression*, exprs);
ast_value *vtype;
const char *name;
+ int builtin;
+
ir_function *ir_func;
+ ir_block *curblock;
+ ir_block *breakblock;
+ ir_block *continueblock;
+
+ size_t labelcount;
+ /* in order for thread safety - for the optional
+ * channel abesed multithreading... keeping a buffer
+ * here to use in ast_function_label.
+ */
+ char labelbuf[64];
MEM_VECTOR_MAKE(ast_block*, blocks);
};
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);
MEM_VECTOR_PROTO(ast_function, ast_block*, blocks);
{
ast_expression_common expression;
- ast_binary binary;
- ast_block block;
+ ast_value value;
+ ast_binary binary;
+ ast_block block;
+ ast_ternary ternary;
+ ast_ifthen ifthen;
+ ast_store store;
+ ast_entfield entfield;
};
/* Node union
projects / xonotic / gmqcc.git / blobdiff