mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-28 12:25:19 +01:00
391 lines
14 KiB
C++
391 lines
14 KiB
C++
/*
|
|
* syn.h
|
|
*
|
|
* This file includes definitions and macros associated with syntax diagrams
|
|
*
|
|
* SOFTWARE RIGHTS
|
|
*
|
|
* We reserve no LEGAL rights to the Purdue Compiler Construction Tool
|
|
* Set (PCCTS) -- PCCTS is in the public domain. An individual or
|
|
* company may do whatever they wish with source code distributed with
|
|
* PCCTS or the code generated by PCCTS, including the incorporation of
|
|
* PCCTS, or its output, into commerical software.
|
|
*
|
|
* We encourage users to develop software with PCCTS. However, we do ask
|
|
* that credit is given to us for developing PCCTS. By "credit",
|
|
* we mean that if you incorporate our source code into one of your
|
|
* programs (commercial product, research project, or otherwise) that you
|
|
* acknowledge this fact somewhere in the documentation, research report,
|
|
* etc... If you like PCCTS and have developed a nice tool with the
|
|
* output, please mention that you developed it using PCCTS. In
|
|
* addition, we ask that this header remain intact in our source code.
|
|
* As long as these guidelines are kept, we expect to continue enhancing
|
|
* this system and expect to make other tools available as they are
|
|
* completed.
|
|
*
|
|
* ANTLR 1.33
|
|
* Terence Parr
|
|
* Parr Research Corporation
|
|
* with Purdue University and AHPCRC, University of Minnesota
|
|
* 1989-2001
|
|
*/
|
|
|
|
#include "set.h"
|
|
|
|
#define NumNodeTypes 4
|
|
#define NumJuncTypes 9
|
|
|
|
/* List the different node types */
|
|
#define nJunction 1
|
|
#define nRuleRef 2
|
|
#define nToken 3
|
|
#define nAction 4
|
|
|
|
/* Different types of junctions */
|
|
#define aSubBlk 1
|
|
#define aOptBlk 2
|
|
#define aLoopBlk 3
|
|
#define EndBlk 4
|
|
#define RuleBlk 5
|
|
#define Generic 6 /* just a junction--no unusual characteristics */
|
|
#define EndRule 7
|
|
#define aPlusBlk 8
|
|
#define aLoopBegin 9
|
|
|
|
typedef int NodeType;
|
|
|
|
#define TreeBlockAllocSize 500
|
|
#define JunctionBlockAllocSize 200
|
|
#define ActionBlockAllocSize 50
|
|
#define RRefBlockAllocSize 100
|
|
#define TokenBlockAllocSize 100
|
|
|
|
#ifdef __cplusplus
|
|
class ActionNode;
|
|
class Junction;
|
|
#endif
|
|
|
|
/* note that 'right' is used by the tree node allocator as a ptr for linked list */
|
|
typedef struct _tree {
|
|
struct _tree *down, *right;
|
|
int token;
|
|
union {
|
|
int rk; /* if token==EpToken, => how many more tokens req'd */
|
|
struct _tree *tref; /* if token==TREE_REF */
|
|
set sref; /* if token==SET */
|
|
} v;
|
|
#ifdef TREE_DEBUG
|
|
int in_use;
|
|
int seq;
|
|
#endif
|
|
} Tree;
|
|
|
|
|
|
/* a predicate is defined to be a predicate action and a token tree with
|
|
* context info (if used); later, this struct may include the
|
|
* "hoisting distance" when we hoist past tokens.
|
|
*
|
|
* A tree is used to indicate && vs ||
|
|
*
|
|
* p
|
|
* |
|
|
* q--r
|
|
*
|
|
* indicates p && (q||r).
|
|
*
|
|
* If expr is PRED_AND_LIST or PRED_OR_LIST, then it's an operation node
|
|
* and indicates the start of an && or || list.
|
|
*/
|
|
|
|
typedef struct _Predicate {
|
|
struct _Predicate *down, *right; /* these have to be first */
|
|
struct _Predicate *up, *left; /* doubly-link me */
|
|
char *expr;
|
|
Tree *tcontext; /* used if lookahead depth of > one is needed (tree) */
|
|
int k; /* lookahead depth for this tcontext */
|
|
set scontext[2];/* used if lookahead depth of one is needed (set) */
|
|
/* scontext[0] is not used; only needed so genExprSets()
|
|
routine works (it expects an array)
|
|
*/
|
|
set completionTree; /* which lookahead depths are required to complete tcontext? */
|
|
set completionSet; /* MR10 separate completion set for sets and trees */
|
|
struct _PredEntry *predEntry; /* MR11 */
|
|
|
|
#ifdef __cplusplus
|
|
ActionNode *source; /* where did this predicate come from? */
|
|
#else
|
|
struct _anode *source; /* where did this predicate come from? */
|
|
#endif
|
|
|
|
char cloned; /* MR10 don't want to free original guard pred */
|
|
char redundant; /* MR10 predicate tree simplification */
|
|
char ampersandStyle; /* MR10 (g)? && <<p>>? */
|
|
char inverted; /* MR11 ! predName */
|
|
char isConst; /* MR11 */
|
|
char constValue; /* MR11 */
|
|
char conflictReported; /* MR11 */
|
|
|
|
set plainSet; /* MR12b */
|
|
|
|
/*** remember to change new_predicate() and predicate_dup() when changing this ***/
|
|
|
|
} Predicate;
|
|
|
|
typedef struct _ExceptionHandler {
|
|
char *signalname;
|
|
char *action;
|
|
} ExceptionHandler;
|
|
|
|
typedef struct _ExceptionGroup {
|
|
struct _ListNode *handlers; /* list of ExceptionHandler's */
|
|
char *label; /* label==""; implies not attached to any
|
|
* particular rule ref.
|
|
*/
|
|
char *altID; /* which alt did it come from (blk#:alt#) */
|
|
|
|
struct _ExceptionGroup *pendingLink; /* for alternative EG MR7 */
|
|
struct _ExceptionGroup *outerEG; /* for alternative EG MR7 */
|
|
struct _LabelEntry *labelEntry; /* for alternative EG MR7 */
|
|
int forRule; /* MR7 */
|
|
int used; /* MR7 */
|
|
} ExceptionGroup ;
|
|
|
|
|
|
#define TokenString(_i) ((TokenInd!=NULL)?TokenStr[TokenInd[_i]]:TokenStr[_i])
|
|
#define ExprString(_i) ((TokenInd!=NULL)?ExprStr[TokenInd[_i]]:ExprStr[_i])
|
|
|
|
|
|
/* M e s s a g e P a s s i n g T o N o d e s */
|
|
|
|
/*
|
|
* assumes a 'Junction *r' exists. This macro calls a function with
|
|
* the pointer to the node to operate on and a pointer to the rule
|
|
* in which it is enclosed.
|
|
*/
|
|
#define TRANS(p) {if ( (p)==NULL ) fatal("TRANS: NULL object"); \
|
|
if ( (p)->ntype == nJunction ) (*(fpJTrans[((Junction *)(p))->jtype]))( p );\
|
|
else (*(fpTrans[(p)->ntype]))( p );}
|
|
|
|
#define PRINT(p) {if ( (p)==NULL ) fatal("PRINT: NULL object");\
|
|
(*(fpPrint[(p)->ntype]))( p );}
|
|
|
|
#define REACH(p,k,rk,a) {if ( (p)==NULL ) fatal("REACH: NULL object");\
|
|
(a) = (*(fpReach[(p)->ntype]))( p, k, rk );}
|
|
|
|
#define TRAV(p,k,rk,a) {if ( (p)==NULL ) {\
|
|
if ( ContextGuardTRAV ) (a)=NULL; \
|
|
else fatal("TRAV: NULL object");\
|
|
} \
|
|
else (a) = (*(fpTraverse[(p)->ntype]))( p, k, rk );}
|
|
|
|
/**
|
|
*** #define TRAV(p,k,rk,a) {if ( (p)==NULL ) fatal("TRAV: NULL object");\
|
|
*** (a) = (*(fpTraverse[(p)->ntype]))( p, k, rk );}
|
|
**/
|
|
|
|
/* All syntax diagram nodes derive from Node -- superclass
|
|
*/
|
|
#ifdef __cplusplus
|
|
class Node {
|
|
public:
|
|
NodeType ntype;
|
|
char *rname; /* what rule does this element live in? */
|
|
int file; /* index in FileStr */
|
|
int line; /* line number that element occurs on */
|
|
};
|
|
#else
|
|
typedef struct _node {
|
|
NodeType ntype;
|
|
char *rname; /* what rule does this element live in? */
|
|
int file; /* index in FileStr */
|
|
int line; /* line number that element occurs on */
|
|
} Node;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
class ActionNode : public Node {
|
|
public:
|
|
#else
|
|
typedef struct _anode {
|
|
NodeType ntype;
|
|
char *rname; /* what rule does this action live in? */
|
|
int file; /* index in FileStr (name of file with action) */
|
|
int line; /* line number that action occurs on */
|
|
#endif
|
|
Node *next;
|
|
char *action;
|
|
int is_predicate; /* true if action is a <<...>>? predicate action */
|
|
int done; /* don't dump if action dumped (used for predicates) */
|
|
int init_action; /* is this the 1st action of 1st prod of block? */
|
|
char *pred_fail; /* what to do/print when predicate fails */
|
|
Predicate *guardpred; /* if '(context)? =>' was present, already done */
|
|
unsigned char frmwarned;/* have we dumped a warning for pred yet? */
|
|
unsigned char ctxwarned;/* have we dumped a warning for pred yet? */
|
|
unsigned char predTooLong; /* MR10 have we dumped warning for pred yet */
|
|
unsigned char noHoist; /* MR12 literally "noHoist" */
|
|
Predicate *ampersandPred; /* MR10 (g)? && <<p>>? expr */
|
|
#ifdef __cplusplus
|
|
Junction *guardNodes; /* MR11 */
|
|
#else
|
|
struct _junct *guardNodes; /* MR11 */
|
|
#endif
|
|
struct _PredEntry *predEntry; /* MR11 */
|
|
int inverted; /* MR11 <<!predSymbol>>? */
|
|
#ifdef __cplusplus
|
|
};
|
|
#else
|
|
} ActionNode;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
class TokNode : public Node {
|
|
public:
|
|
#else
|
|
typedef struct _toknode {
|
|
NodeType ntype;
|
|
char *rname; /* name of rule it's in */
|
|
int file; /* index in FileStr (name of file with rule) */
|
|
int line; /* line number that token occurs on */
|
|
#endif
|
|
Node *next;
|
|
int token;
|
|
int astnode; /* leaf/root/excluded (used to build AST's) */
|
|
unsigned char label;/* token label or expression ? */
|
|
unsigned char remapped;
|
|
/* used if token id's are forced to certain positions;
|
|
* a function walks the tree reassigning token numbers */
|
|
int upper_range; /* MR13 - was char */
|
|
/* used only if Token is of type T1..T2; in this case,
|
|
* use token..upper_range as the range; else
|
|
* upper_range must be 0 */
|
|
unsigned char wild_card;
|
|
/* indicates that the token is the "." wild-card;
|
|
* field token is ignored if wild_card is set
|
|
*/
|
|
unsigned int elnum; /* element number within the alternative */
|
|
#ifdef __cplusplus
|
|
Junction *altstart; /* pointer to node that starts alt */
|
|
#else
|
|
struct _junct *altstart; /* pointer to node that starts alt */
|
|
#endif
|
|
struct _TCnode *tclass; /* token class if tokclass ref */
|
|
set tset; /* set of tokens represented by meta token */
|
|
char *el_label; /* el_label:toknode */
|
|
unsigned char complement; /* complement the set? */
|
|
ExceptionGroup *ex_group; /* any exception[el_label] attached? */
|
|
unsigned char use_def_MT_handler;
|
|
unsigned char label_used_in_semantic_pred; /* MR10 */
|
|
#ifdef __cplusplus
|
|
};
|
|
#else
|
|
} TokNode;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
class RuleRefNode : public Node {
|
|
public:
|
|
#else
|
|
typedef struct _rrnode {
|
|
NodeType ntype;
|
|
char *rname; /* name of rule it's in */
|
|
int file; /* index in FileStr (name of file with rule)
|
|
it's in */
|
|
int line; /* line number that rule ref occurs on */
|
|
#endif
|
|
Node *next;
|
|
char *text; /* reference to which rule */
|
|
char *parms; /* point to parameters of rule invocation
|
|
(if present) */
|
|
char *assign; /* point to left-hand-side of assignment
|
|
(if any) */
|
|
int linked; /* Has a FoLink already been established? */
|
|
int astnode; /* excluded? (used to build AST's) */
|
|
unsigned int elnum; /* element number within the alternative */
|
|
#ifdef __cplusplus
|
|
Junction *altstart;
|
|
#else
|
|
struct _junct *altstart;
|
|
#endif
|
|
char *el_label; /* el_label:rrnode */
|
|
ExceptionGroup *ex_group; /* any exception[el_label] attached? */
|
|
#ifdef __cplusplus
|
|
};
|
|
#else
|
|
} RuleRefNode;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
class Junction : public Node {
|
|
public:
|
|
#else
|
|
typedef struct _junct {
|
|
NodeType ntype;
|
|
char *rname; /* name of rule junction is in */
|
|
int file; /* index in FileStr (name of file with rule)
|
|
if blk == RuleBlk */
|
|
int line; /* line number that rule occurs on */
|
|
#endif
|
|
int seq; /* MR10 sequence number */
|
|
char ignore; /* used by FIRST computation to ignore
|
|
empty alt added for the (...)+ blks */
|
|
char visited; /* used by recursive routines to avoid
|
|
infinite recursion */
|
|
char pvisited; /* used by print routines to avoid
|
|
infinite recursion */
|
|
char fvisited; /* used by FoLink() to avoid
|
|
infinite recursion */
|
|
char *lock; /* used by REACH to track infinite recursion */
|
|
char *pred_lock; /* used by find_predicates to track infinite recursion */
|
|
int altnum; /* used in subblocks. altnum==0 means not an
|
|
alt of subrule */
|
|
int jtype; /* annotation for code-gen/FIRST/FOLLOW.
|
|
Junction type */
|
|
#ifdef __cplusplus
|
|
Junction *end; /* pointer to node with EndBlk in it
|
|
if blk == a block type */
|
|
#else
|
|
struct _junct *end; /* pointer to node with EndBlk in it
|
|
if blk == a block type */
|
|
#endif
|
|
Node *p1, *p2;
|
|
char halt; /* never move past a junction with halt==TRUE */ /* MR10 was int */
|
|
char *pdecl; /* point to declaration of parameters on rule
|
|
(if present) */
|
|
char *parm; /* point to parameter of block invocation
|
|
(if present) */
|
|
char predparm; /* indicates that the 'parm' is a predicate
|
|
* to be used in the while loop generated
|
|
* for blocks */ /* MR10 was int */
|
|
char *ret; /* point to return type of rule (if present) */
|
|
char *erraction; /* point to error action (if present) */
|
|
int blockid; /* this is a unique ID */
|
|
char *exception_label; /* goto label for this alt */
|
|
set *fset; /* used for code generation */
|
|
Tree *ftree; /* used for code generation */
|
|
Predicate *predicate;/* predicate that can be used to disambiguate */
|
|
char guess; /* true if (...)? block */
|
|
char alpha_beta_guess_end; /* MR14 1 => end block of guess sub block */
|
|
Node *guess_analysis_point; /* MR14 */
|
|
char approx; /* limit block to use linear approx lookahead? */
|
|
set tokrefs; /* if ith element of alt is tokref then i is member */
|
|
set rulerefs; /* if ith element of alt is rule ref then i is member */
|
|
struct _ListNode *exceptions; /* list of exceptions groups for rule */
|
|
struct _ListNode *el_labels; /* list of element labels for rule */
|
|
ExceptionGroup *outerEG; /* MR7 */
|
|
int curAltNum; /* MR7 */
|
|
char* pFirstSetSymbol; /* #pragma FirstSetSymbol(Foo) MR21 */
|
|
#ifdef __cplusplus
|
|
Junction *pendingLink; /* MR7 */
|
|
#else
|
|
struct _junct *pendingLink; /* MR7 */
|
|
#endif
|
|
char overlap_warning; /* MR10 */
|
|
#ifdef __cplusplus
|
|
};
|
|
#else
|
|
} Junction;
|
|
#endif
|
|
|
|
typedef struct { Node *left, *right;} Graph;
|
|
|