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Use /*X-overwrites-A*/ wherever X = A; appears in the grammar

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Randy Heit 2016-03-20 15:39:21 -05:00
parent c0dd39ffd4
commit 071a5718cc
1 changed files with 66 additions and 66 deletions
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132
src/zscript/zcc-parse.lemon
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@ -128,15 +128,15 @@ main ::= translation_unit(A). { stat->TopNode = A; stat->sc.ScriptMessage("Parse
%type translation_unit {ZCC_TreeNode *} %type translation_unit {ZCC_TreeNode *}
translation_unit(X) ::= . { X = NULL; } translation_unit(X) ::= . { X = NULL; }
translation_unit(X) ::= translation_unit(A) external_declaration(B). { SAFE_APPEND(A,B); X = A; } translation_unit(X) ::= translation_unit(A) external_declaration(B). { SAFE_APPEND(A,B); X = A; /*X-overwrites-A*/ }
translation_unit(X) ::= translation_unit(X) EOF. translation_unit(X) ::= translation_unit(X) EOF.
translation_unit(X) ::= error. { X = NULL; } translation_unit(X) ::= error. { X = NULL; }
%type external_declaration {ZCC_TreeNode *} %type external_declaration {ZCC_TreeNode *}
external_declaration(X) ::= class_definition(A). { X = A; } external_declaration(X) ::= class_definition(A). { X = A; /*X-overwrites-A*/ }
external_declaration(X) ::= struct_def(A). { X = A; } external_declaration(X) ::= struct_def(A). { X = A; /*X-overwrites-A*/ }
external_declaration(X) ::= enum_def(A). { X = A; } external_declaration(X) ::= enum_def(A). { X = A; /*X-overwrites-A*/ }
external_declaration(X) ::= const_def(A). { X = A; } external_declaration(X) ::= const_def(A). { X = A; /*X-overwrites-A*/ }
/* Optional bits. */ /* Optional bits. */
opt_semicolon ::= . opt_semicolon ::= .
@ -165,7 +165,7 @@ opt_expr(X) ::= expr(X).
class_definition(X) ::= class_head(A) class_body(B). class_definition(X) ::= class_head(A) class_body(B).
{ {
A->Body = B; A->Body = B;
X = A; X = A; /*X-overwrites-A*/
} }
class_head(X) ::= CLASS(T) IDENTIFIER(A) class_ancestry(B) class_flags(C). class_head(X) ::= CLASS(T) IDENTIFIER(A) class_ancestry(B) class_flags(C).
@ -180,7 +180,7 @@ class_head(X) ::= CLASS(T) IDENTIFIER(A) class_ancestry(B) class_flags(C).
%type class_ancestry{ZCC_Identifier *} %type class_ancestry{ZCC_Identifier *}
class_ancestry(X) ::= . { X = NULL; } class_ancestry(X) ::= . { X = NULL; }
class_ancestry(X) ::= COLON dottable_id(A). { X = A; } class_ancestry(X) ::= COLON dottable_id(A). { X = A; /*X-overwrites-A*/ }
%type class_flags{ClassFlagsBlock} %type class_flags{ClassFlagsBlock}
class_flags(X) ::= . { X.Flags = 0; X.Replaces = NULL; } class_flags(X) ::= . { X.Flags = 0; X.Replaces = NULL; }
@ -204,7 +204,7 @@ dottable_id(X) ::= dottable_id(A) DOT IDENTIFIER(B).
NEW_AST_NODE(Identifier,id2,A); NEW_AST_NODE(Identifier,id2,A);
id2->Id = B.Name(); id2->Id = B.Name();
A->AppendSibling(id2); A->AppendSibling(id2);
X = A; X = A; /*X-overwrites-A*/
} }
/*------ Class Body ------*/ /*------ Class Body ------*/
@ -217,23 +217,23 @@ dottable_id(X) ::= dottable_id(A) DOT IDENTIFIER(B).
// * constants // * constants
// * defaults // * defaults
class_body(X) ::= SEMICOLON class_innards(A) EOF. { X = A; } class_body(X) ::= SEMICOLON class_innards(A) EOF. { X = A; /*X-overwrites-A*/ }
class_body(X) ::= LBRACE class_innards(A) RBRACE. { X = A; } class_body(X) ::= LBRACE class_innards(A) RBRACE. { X = A; /*X-overwrites-A*/ }
class_innards(X) ::= . { X = NULL; } class_innards(X) ::= . { X = NULL; }
class_innards(X) ::= class_innards(A) class_member(B). { SAFE_APPEND(A,B); X = A; } class_innards(X) ::= class_innards(A) class_member(B). { SAFE_APPEND(A,B); X = A; /*X-overwrites-A*/ }
%type struct_def{ZCC_Struct *} %type struct_def{ZCC_Struct *}
%type enum_def {ZCC_Enum *} %type enum_def {ZCC_Enum *}
%type states_def {ZCC_States *} %type states_def {ZCC_States *}
%type const_def {ZCC_ConstantDef *} %type const_def {ZCC_ConstantDef *}
class_member(X) ::= declarator(A). { X = A; } class_member(X) ::= declarator(A). { X = A; /*X-overwrites-A*/ }
class_member(X) ::= enum_def(A). { X = A; } class_member(X) ::= enum_def(A). { X = A; /*X-overwrites-A*/ }
class_member(X) ::= struct_def(A). { X = A; } class_member(X) ::= struct_def(A). { X = A; /*X-overwrites-A*/ }
class_member(X) ::= states_def(A). { X = A; } class_member(X) ::= states_def(A). { X = A; /*X-overwrites-A*/ }
class_member(X) ::= default_def(A). { X = A; } class_member(X) ::= default_def(A). { X = A; /*X-overwrites-A*/ }
class_member(X) ::= const_def(A). { X = A; } class_member(X) ::= const_def(A). { X = A; /*X-overwrites-A*/ }
/*----- Struct Definition -----*/ /*----- Struct Definition -----*/
/* Structs can define variables and enums. */ /* Structs can define variables and enums. */
@ -255,11 +255,11 @@ opt_struct_body(X) ::= struct_body(X).
struct_body(X) ::= error. { X = NULL; } struct_body(X) ::= error. { X = NULL; }
struct_body(X) ::= struct_member(X). struct_body(X) ::= struct_member(X).
struct_body(X) ::= struct_member(A) struct_body(B). { X = A; A->AppendSibling(B); } struct_body(X) ::= struct_member(A) struct_body(B). { X = A; /*X-overwrites-A*/ X->AppendSibling(B); }
struct_member(X) ::= declarator_no_fun(A). { X = A; } struct_member(X) ::= declarator_no_fun(A). { X = A; /*X-overwrites-A*/ }
struct_member(X) ::= enum_def(A). { X = A; } struct_member(X) ::= enum_def(A). { X = A; /*X-overwrites-A*/ }
struct_member(X) ::= const_def(A). { X = A; } struct_member(X) ::= const_def(A). { X = A; /*X-overwrites-A*/ }
/*----- Constant Definition ------*/ /*----- Constant Definition ------*/
/* Like UnrealScript, a constant's type is implied by its value's type. */ /* Like UnrealScript, a constant's type is implied by its value's type. */
@ -340,11 +340,11 @@ enum_def(X) ::= ENUM(T) IDENTIFIER(A) enum_type(B) LBRACE opt_enum_list(C) RBRAC
} }
enum_type(X) ::= . { X.Int = ZCC_IntAuto; X.SourceLoc = stat->sc.GetMessageLine(); } enum_type(X) ::= . { X.Int = ZCC_IntAuto; X.SourceLoc = stat->sc.GetMessageLine(); }
enum_type(X) ::= COLON int_type(A). { X = A; } enum_type(X) ::= COLON int_type(A). { X = A; /*X-overwrites-A*/ }
enum_list(X) ::= error. { X = NULL; } enum_list(X) ::= error. { X = NULL; }
enum_list(X) ::= enumerator(X). enum_list(X) ::= enumerator(X).
enum_list(X) ::= enum_list(A) COMMA enumerator(B). { X = A; A->AppendSibling(B); } enum_list(X) ::= enum_list(A) COMMA enumerator(B). { X = A; /*X-overwrites-A*/ X->AppendSibling(B); }
opt_enum_list(X) ::= . { X = NULL; } opt_enum_list(X) ::= . { X = NULL; }
opt_enum_list(X) ::= enum_list(X) opt_comma. opt_enum_list(X) ::= enum_list(X) opt_comma.
@ -402,9 +402,9 @@ scanner_mode ::= . { stat->sc.SetStateMode(true); }
states_body(X) ::= . { X = NULL; } states_body(X) ::= . { X = NULL; }
states_body(X) ::= error. { X = NULL; } states_body(X) ::= error. { X = NULL; }
states_body(X) ::= states_body(A) state_line(B). { SAFE_APPEND(A,B); X = A; } states_body(X) ::= states_body(A) state_line(B). { SAFE_APPEND(A,B); X = A; /*X-overwrites-A*/ }
states_body(X) ::= states_body(A) state_label(B). { SAFE_APPEND(A,B); X = A; } states_body(X) ::= states_body(A) state_label(B). { SAFE_APPEND(A,B); X = A; /*X-overwrites-A*/ }
states_body(X) ::= states_body(A) state_flow(B). { SAFE_APPEND(A,B); X = A; } states_body(X) ::= states_body(A) state_flow(B). { SAFE_APPEND(A,B); X = A; /*X-overwrites-A*/ }
state_label(X) ::= NWS(A) COLON. state_label(X) ::= NWS(A) COLON.
{ {
@ -428,7 +428,7 @@ state_flow_type(X) ::= GOTO(T) dottable_id(A) state_goto_offset(B).
} }
state_goto_offset(X) ::= . { X = NULL; } state_goto_offset(X) ::= . { X = NULL; }
state_goto_offset(X) ::= PLUS expr(A). { X = A; } /* Must evaluate to a non-negative integer constant. */ state_goto_offset(X) ::= PLUS expr(A). { X = A; /*X-overwrites-A*/ } /* Must evaluate to a non-negative integer constant. */
state_line(X) ::= NWS(A) NWS(B) expr state_opts(C) state_action(D). state_line(X) ::= NWS(A) NWS(B) expr state_opts(C) state_action(D).
{ {
@ -454,21 +454,21 @@ state_line(X) ::= NWS(A) NWS(B) expr state_opts(C) state_action(D).
} }
state_opts(X) ::= . { StateOpts opts; opts.Zero(); X = opts; } state_opts(X) ::= . { StateOpts opts; opts.Zero(); X = opts; }
state_opts(X) ::= state_opts(A) BRIGHT. { A.Bright = true; X = A; } state_opts(X) ::= state_opts(A) BRIGHT. { A.Bright = true; X = A; /*X-overwrites-A*/ }
state_opts(X) ::= state_opts(A) FAST. { A.Fast = true; X = A; } state_opts(X) ::= state_opts(A) FAST. { A.Fast = true; X = A; /*X-overwrites-A*/ }
state_opts(X) ::= state_opts(A) SLOW. { A.Slow = true; X = A; } state_opts(X) ::= state_opts(A) SLOW. { A.Slow = true; X = A; /*X-overwrites-A*/ }
state_opts(X) ::= state_opts(A) NODELAY. { A.NoDelay = true; X = A; } state_opts(X) ::= state_opts(A) NODELAY. { A.NoDelay = true; X = A; /*X-overwrites-A*/ }
state_opts(X) ::= state_opts(A) CANRAISE. { A.CanRaise = true; X = A; } state_opts(X) ::= state_opts(A) CANRAISE. { A.CanRaise = true; X = A; /*X-overwrites-A*/ }
state_opts(X) ::= state_opts(A) OFFSET LPAREN expr(B) COMMA expr(C) RPAREN. { A.Offset = B; B->AppendSibling(C); X = A; } state_opts(X) ::= state_opts(A) OFFSET LPAREN expr(B) COMMA expr(C) RPAREN. { A.Offset = B; B->AppendSibling(C); X = A; /*X-overwrites-A*/ }
state_opts(X) ::= state_opts(A) LIGHT LPAREN light_list RPAREN. { X = A; } ///FIXME: GZDoom would want to know this state_opts(X) ::= state_opts(A) LIGHT LPAREN light_list RPAREN. { X = A; /*X-overwrites-A*/ } ///FIXME: GZDoom would want to know this
light_list ::= STRCONST. light_list ::= STRCONST.
light_list ::= light_list COMMA STRCONST. light_list ::= light_list COMMA STRCONST.
/* A state action can be either a compound statement or a single action function call. */ /* A state action can be either a compound statement or a single action function call. */
state_action(X) ::= LBRACE statement_list(A) scanner_mode RBRACE. { X = A; } state_action(X) ::= LBRACE statement_list(A) scanner_mode RBRACE. { X = A; /*X-overwrites-A*/ }
state_action(X) ::= LBRACE error scanner_mode RBRACE. { X = NULL; } state_action(X) ::= LBRACE error scanner_mode RBRACE. { X = NULL; }
state_action(X) ::= state_call(A) scanner_mode SEMICOLON. { X = A; } state_action(X) ::= state_call(A) scanner_mode SEMICOLON. { X = A; /*X-overwrites-A*/ }
state_call(X) ::= . { X = NULL; } state_call(X) ::= . { X = NULL; }
state_call(X) ::= IDENTIFIER(A) state_call_params(B). state_call(X) ::= IDENTIFIER(A) state_call_params(B).
@ -485,11 +485,11 @@ state_call(X) ::= IDENTIFIER(A) state_call_params(B).
} }
state_call_params(X) ::= . { X = NULL; } state_call_params(X) ::= . { X = NULL; }
state_call_params(X) ::= LPAREN func_expr_list(A) RPAREN. { X = A; } state_call_params(X) ::= LPAREN func_expr_list(A) RPAREN. { X = A; /*X-overwrites-A*/ }
/* Definition of a default class instance. */ /* Definition of a default class instance. */
%type default_def {ZCC_CompoundStmt *} %type default_def {ZCC_CompoundStmt *}
default_def(X) ::= DEFAULT compound_statement(A). { X = A; } default_def(X) ::= DEFAULT compound_statement(A). { X = A; /*X-overwrites-A*/ }
/* Type names */ /* Type names */
%type type_name {ZCC_BasicType *} %type type_name {ZCC_BasicType *}
@ -590,16 +590,16 @@ aggregate_type(X) ::= CLASS(T) class_restrictor(A). /* class<type> */
X = cls; X = cls;
} }
class_restrictor(X) ::= . { X = NULL; } class_restrictor(X) ::= . { X = NULL; }
class_restrictor(X) ::= LT dottable_id(A) GT. { X = A; } class_restrictor(X) ::= LT dottable_id(A) GT. { X = A; /*X-overwrites-A*/ }
type(X) ::= type_name(A). { X = A; A->ArraySize = NULL; } type(X) ::= type_name(A). { X = A; /*X-overwrites-A*/ X->ArraySize = NULL; }
type(X) ::= aggregate_type(A). { X = A; A->ArraySize = NULL; } type(X) ::= aggregate_type(A). { X = A; /*X-overwrites-A*/ X->ArraySize = NULL; }
type_or_array(X) ::= type(X). type_or_array(X) ::= type(X).
type_or_array(X) ::= type(A) array_size(B). { X = A; A->ArraySize = B; } type_or_array(X) ::= type(A) array_size(B). { X = A; /*X-overwrites-A*/ X->ArraySize = B; }
type_list(X) ::= type_or_array(X). /* A comma-separated list of types */ type_list(X) ::= type_or_array(X). /* A comma-separated list of types */
type_list(X) ::= type_list(A) COMMA type_or_array(B). { X = A; A->AppendSibling(B); } type_list(X) ::= type_list(A) COMMA type_or_array(B). { X = A; /*X-overwrites-A*/ X->AppendSibling(B); }
type_list_or_void(X) ::= VOID. { X = NULL; } type_list_or_void(X) ::= VOID. { X = NULL; }
type_list_or_void(X) ::= type_list(X). type_list_or_void(X) ::= type_list(X).
@ -622,7 +622,7 @@ array_size(X) ::= array_size_expr(X).
array_size(X) ::= array_size(A) array_size_expr(B). array_size(X) ::= array_size(A) array_size_expr(B).
{ {
A->AppendSibling(B); A->AppendSibling(B);
X = A; X = A; /*X-overwrites-A*/
} }
%type variables_or_function {VarOrFun} %type variables_or_function {VarOrFun}
@ -735,7 +735,7 @@ variable_list(X) ::= variable_name(X).
variable_list(X) ::= variable_list(A) COMMA variable_name(B). variable_list(X) ::= variable_list(A) COMMA variable_name(B).
{ {
A->AppendSibling(B); A->AppendSibling(B);
X = A; X = A; /*X-overwrites-A*/
} }
decl_flags(X) ::= . { X.Int = 0; X.SourceLoc = 0; } decl_flags(X) ::= . { X.Int = 0; X.SourceLoc = 0; }
@ -765,7 +765,7 @@ func_params(X) ::= VOID. { X = NULL; }
func_params(X) ::= func_param_list(X). func_params(X) ::= func_param_list(X).
func_param_list(X) ::= func_param(X). func_param_list(X) ::= func_param(X).
func_param_list(X) ::= func_param_list(A) COMMA func_param(B). { X = A; A->AppendSibling(B); } func_param_list(X) ::= func_param_list(A) COMMA func_param(B). { X = A; /*X-overwrites-A*/ X->AppendSibling(B); }
func_param(X) ::= func_param_flags(A) type(B) IDENTIFIER(C). func_param(X) ::= func_param_flags(A) type(B) IDENTIFIER(C).
{ {
@ -809,7 +809,7 @@ primary(X) ::= SUPER(T).
expr->Type = NULL; expr->Type = NULL;
X = expr; X = expr;
} }
primary(X) ::= constant(A). { X = A; } primary(X) ::= constant(A). { X = A; /*X-overwrites-A*/ }
primary(X) ::= SELF(T). primary(X) ::= SELF(T).
{ {
NEW_AST_NODE(Expression, expr, T); NEW_AST_NODE(Expression, expr, T);
@ -819,7 +819,7 @@ primary(X) ::= SELF(T).
} }
primary(X) ::= LPAREN expr(A) RPAREN. primary(X) ::= LPAREN expr(A) RPAREN.
{ {
X = A; X = A; /*X-overwrites-A*/
} }
primary ::= LPAREN error RPAREN. primary ::= LPAREN error RPAREN.
primary(X) ::= primary(A) LPAREN func_expr_list(B) RPAREN. [DOT] // Function call primary(X) ::= primary(A) LPAREN func_expr_list(B) RPAREN. [DOT] // Function call
@ -1102,8 +1102,8 @@ expr(X) ::= expr(A) QUESTION expr(B) COLON expr(C).
expr_list(X) ::= expr(X). expr_list(X) ::= expr(X).
expr_list(X) ::= expr_list(A) COMMA expr(B). expr_list(X) ::= expr_list(A) COMMA expr(B).
{ {
X = A; X = A; /*X-overwrites-A*/
A->AppendSibling(B); X->AppendSibling(B);
} }
/*----- Function argument lists -----*/ /*----- Function argument lists -----*/
@ -1133,8 +1133,8 @@ func_expr_list(X) ::= func_expr_list(A) COMMA(T) func_expr_item(B).
nil_b->Label = NAME_None; nil_b->Label = NAME_None;
B = nil_b; B = nil_b;
} }
X = A; X = A; /*X-overwrites-A*/
A->AppendSibling(B); X->AppendSibling(B);
} }
func_expr_item(X) ::= . func_expr_item(X) ::= .
@ -1224,14 +1224,14 @@ function_body(X) ::= compound_statement(X).
%type statement{ZCC_Statement *} %type statement{ZCC_Statement *}
statement(X) ::= SEMICOLON. { X = NULL; } statement(X) ::= SEMICOLON. { X = NULL; }
statement(X) ::= labeled_statement(A). { X = A; } statement(X) ::= labeled_statement(A). { X = A; /*X-overwrites-A*/ }
statement(X) ::= compound_statement(A). { X = A; } statement(X) ::= compound_statement(A). { X = A; /*X-overwrites-A*/ }
statement(X) ::= expression_statement(A) SEMICOLON. { X = A; } statement(X) ::= expression_statement(A) SEMICOLON. { X = A; /*X-overwrites-A*/ }
statement(X) ::= selection_statement(X). statement(X) ::= selection_statement(X).
statement(X) ::= iteration_statement(X). statement(X) ::= iteration_statement(X).
statement(X) ::= jump_statement(X). statement(X) ::= jump_statement(X).
statement(X) ::= assign_statement(A) SEMICOLON. { X = A; } statement(X) ::= assign_statement(A) SEMICOLON. { X = A; /*X-overwrites-A*/ }
statement(X) ::= local_var(A) SEMICOLON. { X = A; } statement(X) ::= local_var(A) SEMICOLON. { X = A; /*X-overwrites-A*/ }
statement(X) ::= error SEMICOLON. { X = NULL; } statement(X) ::= error SEMICOLON. { X = NULL; }
/*----- Jump Statements -----*/ /*----- Jump Statements -----*/
@ -1287,12 +1287,12 @@ compound_statement(X) ::= LBRACE(T) error RBRACE.
statement_list(X) ::= statement(A). statement_list(X) ::= statement(A).
{ {
X = A; X = A; /*X-overwrites-A*/
} }
statement_list(X) ::= statement_list(A) statement(B). statement_list(X) ::= statement_list(A) statement(B).
{ {
SAFE_APPEND(A,B); SAFE_APPEND(A,B);
X = A; X = A; /*X-overwrites-A*/
} }
/*----- Expression Statements -----*/ /*----- Expression Statements -----*/
@ -1376,13 +1376,13 @@ while_or_until(X) ::= UNTIL(T).
} }
%type for_init{ZCC_Statement *} %type for_init{ZCC_Statement *}
for_init(X) ::= local_var(A). { X = A; } for_init(X) ::= local_var(A). { X = A /*X-overwrites-A*/; }
for_init(X) ::= for_bump(A). { X = A; } for_init(X) ::= for_bump(A). { X = A /*X-overwrites-A*/; }
%type for_bump{ZCC_Statement *} %type for_bump{ZCC_Statement *}
for_bump(X) ::= . { X = NULL; } for_bump(X) ::= . { X = NULL; }
for_bump(X) ::= expression_statement(A). { X = A; } for_bump(X) ::= expression_statement(A). { X = A; /*X-overwrites-A*/ }
for_bump(X) ::= assign_statement(A). { X = A; } for_bump(X) ::= assign_statement(A). { X = A; /*X-overwrites-A*/ }
/*----- If Statements -----*/ /*----- If Statements -----*/
@ -1397,12 +1397,12 @@ for_bump(X) ::= assign_statement(A). { X = A; }
selection_statement(X) ::= if_front(A). [IF] selection_statement(X) ::= if_front(A). [IF]
{ {
X = A; X = A; /*X-overwrites-A*/
} }
selection_statement(X) ::= if_front(A) ELSE statement(B). [ELSE] selection_statement(X) ::= if_front(A) ELSE statement(B). [ELSE]
{ {
A->FalsePath = B; A->FalsePath = B;
X = A; X = A; /*X-overwrites-A*/
} }
if_front(X) ::= IF(T) LPAREN expr(A) RPAREN statement(B). if_front(X) ::= IF(T) LPAREN expr(A) RPAREN statement(B).
@ -1481,4 +1481,4 @@ local_var(X) ::= type(A) variable_list(B) var_init(C).
%type var_init{ZCC_Expression *} %type var_init{ZCC_Expression *}
var_init(X) ::= . { X = NULL; } var_init(X) ::= . { X = NULL; }
var_init(X) ::= EQ expr_list(A). { X = A; } var_init(X) ::= EQ expr_list(A). { X = A; /*X-overwrites-A*/ }