X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=ast.h;h=0664f2825895256c520f012f2b0d678597c061ab;hb=ab91dea4e0a89a56081f9747a3ee8346254a9d27;hp=458d80f574df7d066ed822212008cd2b1b261fce;hpb=fec07921a4eef78453a5705d3cac502e7cfb6665;p=xonotic%2Fgmqcc.git diff --git a/ast.h b/ast.h index 458d80f..0664f28 100644 --- a/ast.h +++ b/ast.h @@ -36,11 +36,37 @@ 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; + +enum { + TYPE_ast_node, + TYPE_ast_expression, + TYPE_ast_value, + TYPE_ast_function, + TYPE_ast_block, + TYPE_ast_binary, + TYPE_ast_store, + TYPE_ast_binstore, + TYPE_ast_entfield, + TYPE_ast_ifthen, + TYPE_ast_ternary, + TYPE_ast_loop, + TYPE_ast_call, + TYPE_ast_unary, + TYPE_ast_return, + TYPE_ast_member +}; + +#define ast_istype(x, t) ( ((ast_node_common*)x)->nodetype == (TYPE_##t) ) +#define ast_ctx(node) (((ast_node_common*)(node))->context) /* Node interface with common components */ @@ -50,6 +76,7 @@ typedef struct 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. */ @@ -79,7 +106,17 @@ typedef struct ast_expression_codegen *codegen; int vtype; ast_expression *next; + MEM_VECTOR_MAKE(ast_value*, params); + bool variadic; + /* 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; +MEM_VECTOR_PROTO(ast_expression_common, ast_value*, params); /* Value * @@ -109,25 +146,30 @@ struct ast_value_s ast_function *vfunc; } constval; - ir_value *ir_v; + /* usecount for the parser */ + size_t uses; - /* if vtype is qc_function, params contain parameters, and - * 'next' the return type. - */ - MEM_VECTOR_MAKE(ast_value*, params); + ir_value *ir_v; }; -MEM_VECTOR_PROTO(ast_value, ast_value*, params); 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*); 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 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*); + +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)) +bool ast_type_adopt_impl(ast_expression *self, const ast_expression *other); + /* Binary * * A value-returning binary expression. @@ -148,6 +190,64 @@ 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 +{ + ast_expression_common expression; + + int opstore; + int opbin; + ast_expression *dest; + ast_expression *source; +}; +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 +{ + 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: @@ -174,6 +274,22 @@ void ast_entfield_delete(ast_entfield*); bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**); +/* 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 +{ + ast_expression_common expression; + ast_expression *owner; + unsigned int field; +}; +ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field); +void ast_member_delete(ast_member*); + +bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**); + /* Store * * Stores left<-right and returns left. @@ -183,11 +299,11 @@ struct ast_store_s { 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**); @@ -319,14 +435,18 @@ struct ast_block_s MEM_VECTOR_MAKE(ast_value*, locals); MEM_VECTOR_MAKE(ast_expression*, exprs); + MEM_VECTOR_MAKE(ast_expression*, collect); }; 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); +MEM_VECTOR_PROTO(ast_block, ast_expression*, collect); bool ast_block_codegen(ast_block*, ast_function*, bool lvalue, ir_value**); +bool ast_block_collect(ast_block*, ast_expression*); /* Function *