X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ast.h;h=5b556e1be52912e44a554c1b4e99a4d059b3097b;hp=eeba63626da652bd9af021801121646ecfb6f772;hb=ff37abb0c7c60481e1264914fa5e02e9986c5cd9;hpb=33be9d45597e0ab718f424abac072393db06a5eb diff --git a/ast.h b/ast.h index eeba636..5b556e1 100644 --- a/ast.h +++ b/ast.h @@ -1,6 +1,7 @@ /* - * Copyright (C) 2012 + * Copyright (C) 2012, 2013, 2014, 2015 * 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 @@ -24,12 +25,14 @@ #define GMQCC_AST_HDR #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_node_common ast_node; +typedef struct ast_expression_common ast_expression; typedef struct ast_value_s ast_value; typedef struct ast_function_s ast_function; @@ -50,6 +53,42 @@ 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; +typedef struct ast_argpipe_s ast_argpipe; +typedef struct ast_state_s 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, + + 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 */ @@ -72,19 +111,21 @@ enum { 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) ( ((ast_node*)x)->nodetype == (TYPE_##t) ) +#define ast_ctx(node) (((ast_node*)(node))->context) +#define ast_side_effects(node) (((ast_node*)(node))->side_effects) /* Node interface with common components */ typedef void ast_node_delete(ast_node*); -typedef struct +struct ast_node_common { - lex_ctx context; + lex_ctx_t context; /* I don't feel comfortable using keywords like 'delete' as names... */ ast_node_delete *destroy; int nodetype; @@ -93,14 +134,14 @@ typedef struct */ 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); \ - } \ +}; + +#define ast_delete(x) (*( ((ast_node*)(x))->destroy ))((ast_node*)(x)) +#define ast_unref(x) do \ +{ \ + if (! (((ast_node*)(x))->keep) ) { \ + ast_delete(x); \ + } \ } while(0) /* Expression interface @@ -122,16 +163,20 @@ typedef bool ast_expression_codegen(ast_expression*, * type `expression`, so the ast_ident's codegen would search for * variables through the environment (or functions, constants...). */ -typedef struct +struct ast_expression_common { - ast_node_common node; + ast_node node; ast_expression_codegen *codegen; int vtype; ast_expression *next; /* arrays get a member-count */ size_t count; ast_value* *params; - uint32_t flags; + ast_flag_t flags; + /* void foo(string...) gets varparam set as a restriction + * for variadic parameters + */ + ast_expression *varparam; /* 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 @@ -139,10 +184,7 @@ typedef struct */ 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) +}; /* Value * @@ -151,29 +193,36 @@ typedef struct * typedef float foo; * is like creating a 'float foo', foo serving as the type's name. */ +typedef union { + qcfloat_t vfloat; + int vint; + vec3_t vvec; + const char *vstring; + int ventity; + ast_function *vfunc; + ast_value *vfield; +} basic_value_t; + struct ast_value_s { - ast_expression_common expression; + ast_expression expression; const char *name; + const char *desc; - /* - int vtype; - ast_value *next; - */ + const char *argcounter; 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; + bool inexact; /* inexact coming from folded expression */ + basic_value_t constval; + /* for TYPE_ARRAY we have an optional vector + * of constants when an initializer list + * was provided. + */ + basic_value_t *initlist; /* usecount for the parser */ size_t uses; @@ -185,46 +234,59 @@ struct ast_value_s /* ONLY for arrays in progs version up to 6 */ ast_value *setter; ast_value *getter; + + + bool intrinsic; /* true if associated with intrinsic */ }; -ast_value* ast_value_new(lex_ctx ctx, const char *name, int qctype); +ast_value* ast_value_new(lex_ctx_t 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 isparam); +*/ + bool ast_global_codegen(ast_value *self, ir_builder *ir, bool isfield); void 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); +ast_expression* ast_type_copy(lex_ctx_t 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); +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); +typedef enum ast_binary_ref_s { + 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 { - ast_expression_common expression; + ast_expression expression; int op; ast_expression *left; ast_expression *right; + ast_binary_ref refs; + bool right_first; }; -ast_binary* ast_binary_new(lex_ctx ctx, +ast_binary* ast_binary_new(lex_ctx_t 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 * @@ -233,7 +295,7 @@ bool ast_binary_codegen(ast_binary*, ast_function*, bool lvalue, ir_value**); */ struct ast_binstore_s { - ast_expression_common expression; + ast_expression expression; int opstore; int opbin; @@ -242,14 +304,11 @@ struct ast_binstore_s /* for &~= which uses the destination in a binary in source we can use this */ bool keep_dest; }; -ast_binstore* ast_binstore_new(lex_ctx ctx, +ast_binstore* ast_binstore_new(lex_ctx_t 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 * @@ -257,17 +316,14 @@ bool ast_binstore_codegen(ast_binstore*, ast_function*, bool lvalue, ir_value**) */ struct ast_unary_s { - ast_expression_common expression; + ast_expression expression; int op; ast_expression *operand; }; -ast_unary* ast_unary_new(lex_ctx ctx, +ast_unary* ast_unary_new(lex_ctx_t 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 * @@ -277,14 +333,11 @@ bool ast_unary_codegen(ast_unary*, ast_function*, bool lvalue, ir_value**); */ struct ast_return_s { - ast_expression_common expression; + ast_expression expression; ast_expression *operand; }; -ast_return* ast_return_new(lex_ctx ctx, +ast_return* ast_return_new(lex_ctx_t ctx, ast_expression *expr); -void ast_return_delete(ast_return*); - -bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**); /* Entity-field * @@ -301,17 +354,14 @@ bool ast_return_codegen(ast_return*, ast_function*, bool lvalue, ir_value**); */ struct ast_entfield_s { - ast_expression_common expression; + ast_expression 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*); - -bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**); +ast_entfield* ast_entfield_new(lex_ctx_t ctx, ast_expression *entity, ast_expression *field); +ast_entfield* ast_entfield_new_force(lex_ctx_t ctx, ast_expression *entity, ast_expression *field, const ast_expression *outtype); /* Member access: * @@ -320,17 +370,16 @@ bool ast_entfield_codegen(ast_entfield*, ast_function*, bool lvalue, ir_value**) */ struct ast_member_s { - ast_expression_common expression; + ast_expression 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); +ast_member* ast_member_new(lex_ctx_t 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); -bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**); /* Array index access: * @@ -344,14 +393,22 @@ bool ast_member_codegen(ast_member*, ast_function*, bool lvalue, ir_value**); */ struct ast_array_index_s { - ast_expression_common expression; + ast_expression expression; 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*); +ast_array_index* ast_array_index_new(lex_ctx_t ctx, ast_expression *array, ast_expression *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_s +{ + ast_expression expression; + ast_expression *index; +}; +ast_argpipe* ast_argpipe_new(lex_ctx_t ctx, ast_expression *index); /* Store * @@ -360,16 +417,13 @@ bool ast_array_index_codegen(ast_array_index*, ast_function*, bool lvalue, ir_va */ struct ast_store_s { - ast_expression_common expression; + ast_expression expression; int op; ast_expression *dest; ast_expression *source; }; -ast_store* ast_store_new(lex_ctx ctx, int op, +ast_store* ast_store_new(lex_ctx_t ctx, int op, ast_expression *d, ast_expression *s); -void ast_store_delete(ast_store*); - -bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**); /* If * @@ -384,16 +438,13 @@ bool ast_store_codegen(ast_store*, ast_function*, bool lvalue, ir_value**); */ struct ast_ifthen_s { - ast_expression_common expression; + ast_expression expression; ast_expression *cond; /* It's all just 'expressions', since an ast_block is one too. */ ast_expression *on_true; ast_expression *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**); +ast_ifthen* ast_ifthen_new(lex_ctx_t ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse); /* Ternary expressions... * @@ -410,16 +461,13 @@ bool ast_ifthen_codegen(ast_ifthen*, ast_function*, bool lvalue, ir_value**); */ struct ast_ternary_s { - ast_expression_common expression; + ast_expression expression; ast_expression *cond; /* It's all just 'expressions', since an ast_block is one too. */ ast_expression *on_true; ast_expression *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**); +ast_ternary* ast_ternary_new(lex_ctx_t ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse); /* A general loop node * @@ -446,7 +494,7 @@ continue: // a 'continue' will jump here */ struct ast_loop_s { - ast_expression_common expression; + ast_expression expression; ast_expression *initexpr; ast_expression *precond; ast_expression *postcond; @@ -461,28 +509,22 @@ struct ast_loop_s bool pre_not; bool post_not; }; -ast_loop* ast_loop_new(lex_ctx ctx, +ast_loop* ast_loop_new(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); -void ast_loop_delete(ast_loop*); - -bool ast_loop_codegen(ast_loop*, ast_function*, bool lvalue, ir_value**); /* Break/Continue */ struct ast_breakcont_s { - ast_expression_common expression; - bool is_continue; - unsigned int levels; + ast_expression 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*); - -bool ast_breakcont_codegen(ast_breakcont*, ast_function*, bool lvalue, ir_value**); +ast_breakcont* ast_breakcont_new(lex_ctx_t ctx, bool iscont, unsigned int levels); /* Switch Statements * @@ -500,16 +542,13 @@ typedef struct { } ast_switch_case; struct ast_switch_s { - ast_expression_common expression; + ast_expression expression; ast_expression *operand; ast_switch_case *cases; }; -ast_switch* ast_switch_new(lex_ctx ctx, ast_expression *op); -void ast_switch_delete(ast_switch*); - -bool ast_switch_codegen(ast_switch*, ast_function*, bool lvalue, ir_value**); +ast_switch* ast_switch_new(lex_ctx_t ctx, ast_expression *op); /* Label nodes * @@ -517,17 +556,16 @@ bool ast_switch_codegen(ast_switch*, ast_function*, bool lvalue, ir_value**); */ struct ast_label_s { - ast_expression_common expression; - const char *name; - ir_block *irblock; - ast_goto **gotos; -}; + ast_expression expression; + const char *name; + ir_block *irblock; + ast_goto **gotos; -ast_label* ast_label_new(lex_ctx ctx, const char *name); -void ast_label_delete(ast_label*); -void ast_label_register_goto(ast_label*, ast_goto*); + /* means it has not yet been defined */ + bool undefined; +}; -bool ast_label_codegen(ast_label*, ast_function*, bool lvalue, ir_value**); +ast_label* ast_label_new(lex_ctx_t ctx, const char *name, bool undefined); /* GOTO nodes * @@ -535,17 +573,27 @@ bool ast_label_codegen(ast_label*, ast_function*, bool lvalue, ir_value**); */ struct ast_goto_s { - ast_expression_common expression; - const char *name; - ast_label *target; - ir_block *irblock_from; + ast_expression expression; + const char *name; + ast_label *target; + ir_block *irblock_from; }; -ast_goto* ast_goto_new(lex_ctx ctx, const char *name); -void ast_goto_delete(ast_goto*); +ast_goto* ast_goto_new(lex_ctx_t ctx, const char *name); void ast_goto_set_label(ast_goto*, ast_label*); -bool ast_goto_codegen(ast_goto*, ast_function*, bool lvalue, ir_value**); +/* STATE node + * + * For frame/think state updates: void foo() [framenum, nextthink] {} + */ +struct ast_state_s +{ + ast_expression expression; + ast_expression *framenum; + ast_expression *nextthink; +}; +ast_state* ast_state_new(lex_ctx_t ctx, ast_expression *frame, ast_expression *think); +void ast_state_delete(ast_state*); /* CALL node * @@ -559,32 +607,29 @@ bool ast_goto_codegen(ast_goto*, ast_function*, bool lvalue, ir_value**); */ struct ast_call_s { - ast_expression_common expression; + ast_expression expression; ast_expression *func; - ast_expression* *params; + ast_expression **params; + ast_expression *va_count; }; -ast_call* ast_call_new(lex_ctx ctx, +ast_call* ast_call_new(lex_ctx_t 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*); +bool ast_call_check_types(ast_call*, ast_expression *this_func_va_type); /* Blocks * */ struct ast_block_s { - ast_expression_common expression; + ast_expression expression; ast_value* *locals; ast_expression* *exprs; ast_expression* *collect; }; -ast_block* ast_block_new(lex_ctx ctx); +ast_block* ast_block_new(lex_ctx_t ctx); void ast_block_delete(ast_block*); -bool ast_block_set_type(ast_block*, ast_expression *from); - -bool ast_block_codegen(ast_block*, ast_function*, bool lvalue, ir_value**); +void ast_block_set_type(ast_block*, ast_expression *from); void ast_block_collect(ast_block*, ast_expression*); bool GMQCC_WARN ast_block_add_expr(ast_block*, ast_expression*); @@ -601,13 +646,21 @@ bool GMQCC_WARN ast_block_add_expr(ast_block*, ast_expression*); */ struct ast_function_s { - ast_node_common node; + ast_node node; ast_value *vtype; const char *name; int builtin; + /* list of used-up names for statics without the count suffix */ + char **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 static_count; + ir_function *ir_func; ir_block *curblock; ir_block **breakblocks; @@ -630,8 +683,13 @@ struct ast_function_s char labelbuf[64]; ast_block* *blocks; + + ast_value *varargs; + ast_value *argc; + ast_value *fixedparams; + ast_value *return_value; }; -ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype); +ast_function* ast_function_new(lex_ctx_t 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"... @@ -642,27 +700,11 @@ 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