X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=ast.h;h=187ec882cb8093dc6f09d24374be9fa0944012e5;hb=3072ce7ebaa1b0ecac17fcae3da77457666f27c2;hp=f1149994226f054b912c02e636e1772c94f3d159;hpb=1e0a688bc58835872db02436443f67a764d4baf5;p=xonotic%2Fgmqcc.git diff --git a/ast.h b/ast.h index f114999..187ec88 100644 --- a/ast.h +++ b/ast.h @@ -39,6 +39,10 @@ typedef struct ast_store_s ast_store; 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; /* Node interface with common components */ @@ -75,7 +79,11 @@ typedef struct { 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 * @@ -90,8 +98,10 @@ struct ast_value_s const char *name; + /* int vtype; ast_value *next; + */ bool isconst; union { @@ -104,12 +114,8 @@ struct ast_value_s } 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*); @@ -117,6 +123,10 @@ 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 * @@ -138,6 +148,41 @@ void ast_binary_delete(ast_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: @@ -235,6 +280,70 @@ void ast_ternary_delete(ast_ternary*); 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 * @@ -248,6 +357,7 @@ struct ast_block_s }; 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); @@ -271,13 +381,29 @@ struct ast_function_s 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); @@ -289,8 +415,13 @@ union ast_expression_u { 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