MXS-2732 Rename sqlite-src-3110100 to sqlite-src-3110100.old
Originally, the sqlite installation was imported into the MaxScale repository in the one gigantic MaxScale 1.4 -> 2.0 commit. Consequently, there is no import commit to compare to if you want to extract all MaxScale specific changes. To make it simpler in the future, sqlite will now be imported in a commit of its own.
This commit is contained in:
Johan Wikman
918
query_classifier/qc_sqlite/sqlite-src-3110100.old/tool/lempar.c
Normal file
918
query_classifier/qc_sqlite/sqlite-src-3110100.old/tool/lempar.c
Normal file
@ -0,0 +1,918 @@
|
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/*
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** 2000-05-29
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**
|
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** The author disclaims copyright to this source code. In place of
|
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** a legal notice, here is a blessing:
|
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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*************************************************************************
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** Driver template for the LEMON parser generator.
|
||||
**
|
||||
** The "lemon" program processes an LALR(1) input grammar file, then uses
|
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** this template to construct a parser. The "lemon" program inserts text
|
||||
** at each "%%" line. Also, any "P-a-r-s-e" identifer prefix (without the
|
||||
** interstitial "-" characters) contained in this template is changed into
|
||||
** the value of the %name directive from the grammar. Otherwise, the content
|
||||
** of this template is copied straight through into the generate parser
|
||||
** source file.
|
||||
**
|
||||
** The following is the concatenation of all %include directives from the
|
||||
** input grammar file:
|
||||
*/
|
||||
#include <stdio.h>
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||||
/************ Begin %include sections from the grammar ************************/
|
||||
%%
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||||
/**************** End of %include directives **********************************/
|
||||
/* These constants specify the various numeric values for terminal symbols
|
||||
** in a format understandable to "makeheaders". This section is blank unless
|
||||
** "lemon" is run with the "-m" command-line option.
|
||||
***************** Begin makeheaders token definitions *************************/
|
||||
%%
|
||||
/**************** End makeheaders token definitions ***************************/
|
||||
|
||||
/* The next sections is a series of control #defines.
|
||||
** various aspects of the generated parser.
|
||||
** YYCODETYPE is the data type used to store the integer codes
|
||||
** that represent terminal and non-terminal symbols.
|
||||
** "unsigned char" is used if there are fewer than
|
||||
** 256 symbols. Larger types otherwise.
|
||||
** YYNOCODE is a number of type YYCODETYPE that is not used for
|
||||
** any terminal or nonterminal symbol.
|
||||
** YYFALLBACK If defined, this indicates that one or more tokens
|
||||
** (also known as: "terminal symbols") have fall-back
|
||||
** values which should be used if the original symbol
|
||||
** would not parse. This permits keywords to sometimes
|
||||
** be used as identifiers, for example.
|
||||
** YYACTIONTYPE is the data type used for "action codes" - numbers
|
||||
** that indicate what to do in response to the next
|
||||
** token.
|
||||
** ParseTOKENTYPE is the data type used for minor type for terminal
|
||||
** symbols. Background: A "minor type" is a semantic
|
||||
** value associated with a terminal or non-terminal
|
||||
** symbols. For example, for an "ID" terminal symbol,
|
||||
** the minor type might be the name of the identifier.
|
||||
** Each non-terminal can have a different minor type.
|
||||
** Terminal symbols all have the same minor type, though.
|
||||
** This macros defines the minor type for terminal
|
||||
** symbols.
|
||||
** YYMINORTYPE is the data type used for all minor types.
|
||||
** This is typically a union of many types, one of
|
||||
** which is ParseTOKENTYPE. The entry in the union
|
||||
** for terminal symbols is called "yy0".
|
||||
** YYSTACKDEPTH is the maximum depth of the parser's stack. If
|
||||
** zero the stack is dynamically sized using realloc()
|
||||
** ParseARG_SDECL A static variable declaration for the %extra_argument
|
||||
** ParseARG_PDECL A parameter declaration for the %extra_argument
|
||||
** ParseARG_STORE Code to store %extra_argument into yypParser
|
||||
** ParseARG_FETCH Code to extract %extra_argument from yypParser
|
||||
** YYERRORSYMBOL is the code number of the error symbol. If not
|
||||
** defined, then do no error processing.
|
||||
** YYNSTATE the combined number of states.
|
||||
** YYNRULE the number of rules in the grammar
|
||||
** YY_MAX_SHIFT Maximum value for shift actions
|
||||
** YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions
|
||||
** YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions
|
||||
** YY_MIN_REDUCE Maximum value for reduce actions
|
||||
** YY_ERROR_ACTION The yy_action[] code for syntax error
|
||||
** YY_ACCEPT_ACTION The yy_action[] code for accept
|
||||
** YY_NO_ACTION The yy_action[] code for no-op
|
||||
*/
|
||||
#ifndef INTERFACE
|
||||
# define INTERFACE 1
|
||||
#endif
|
||||
/************* Begin control #defines *****************************************/
|
||||
%%
|
||||
/************* End control #defines *******************************************/
|
||||
|
||||
/* The yyzerominor constant is used to initialize instances of
|
||||
** YYMINORTYPE objects to zero. */
|
||||
static const YYMINORTYPE yyzerominor = { 0 };
|
||||
|
||||
/* Define the yytestcase() macro to be a no-op if is not already defined
|
||||
** otherwise.
|
||||
**
|
||||
** Applications can choose to define yytestcase() in the %include section
|
||||
** to a macro that can assist in verifying code coverage. For production
|
||||
** code the yytestcase() macro should be turned off. But it is useful
|
||||
** for testing.
|
||||
*/
|
||||
#ifndef yytestcase
|
||||
# define yytestcase(X)
|
||||
#endif
|
||||
|
||||
|
||||
/* Next are the tables used to determine what action to take based on the
|
||||
** current state and lookahead token. These tables are used to implement
|
||||
** functions that take a state number and lookahead value and return an
|
||||
** action integer.
|
||||
**
|
||||
** Suppose the action integer is N. Then the action is determined as
|
||||
** follows
|
||||
**
|
||||
** 0 <= N <= YY_MAX_SHIFT Shift N. That is, push the lookahead
|
||||
** token onto the stack and goto state N.
|
||||
**
|
||||
** N between YY_MIN_SHIFTREDUCE Shift to an arbitrary state then
|
||||
** and YY_MAX_SHIFTREDUCE reduce by rule N-YY_MIN_SHIFTREDUCE.
|
||||
**
|
||||
** N between YY_MIN_REDUCE Reduce by rule N-YY_MIN_REDUCE
|
||||
** and YY_MAX_REDUCE
|
||||
|
||||
** N == YY_ERROR_ACTION A syntax error has occurred.
|
||||
**
|
||||
** N == YY_ACCEPT_ACTION The parser accepts its input.
|
||||
**
|
||||
** N == YY_NO_ACTION No such action. Denotes unused
|
||||
** slots in the yy_action[] table.
|
||||
**
|
||||
** The action table is constructed as a single large table named yy_action[].
|
||||
** Given state S and lookahead X, the action is computed as
|
||||
**
|
||||
** yy_action[ yy_shift_ofst[S] + X ]
|
||||
**
|
||||
** If the index value yy_shift_ofst[S]+X is out of range or if the value
|
||||
** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X or if yy_shift_ofst[S]
|
||||
** is equal to YY_SHIFT_USE_DFLT, it means that the action is not in the table
|
||||
** and that yy_default[S] should be used instead.
|
||||
**
|
||||
** The formula above is for computing the action when the lookahead is
|
||||
** a terminal symbol. If the lookahead is a non-terminal (as occurs after
|
||||
** a reduce action) then the yy_reduce_ofst[] array is used in place of
|
||||
** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of
|
||||
** YY_SHIFT_USE_DFLT.
|
||||
**
|
||||
** The following are the tables generated in this section:
|
||||
**
|
||||
** yy_action[] A single table containing all actions.
|
||||
** yy_lookahead[] A table containing the lookahead for each entry in
|
||||
** yy_action. Used to detect hash collisions.
|
||||
** yy_shift_ofst[] For each state, the offset into yy_action for
|
||||
** shifting terminals.
|
||||
** yy_reduce_ofst[] For each state, the offset into yy_action for
|
||||
** shifting non-terminals after a reduce.
|
||||
** yy_default[] Default action for each state.
|
||||
**
|
||||
*********** Begin parsing tables **********************************************/
|
||||
%%
|
||||
/********** End of lemon-generated parsing tables *****************************/
|
||||
|
||||
/* The next table maps tokens (terminal symbols) into fallback tokens.
|
||||
** If a construct like the following:
|
||||
**
|
||||
** %fallback ID X Y Z.
|
||||
**
|
||||
** appears in the grammar, then ID becomes a fallback token for X, Y,
|
||||
** and Z. Whenever one of the tokens X, Y, or Z is input to the parser
|
||||
** but it does not parse, the type of the token is changed to ID and
|
||||
** the parse is retried before an error is thrown.
|
||||
**
|
||||
** This feature can be used, for example, to cause some keywords in a language
|
||||
** to revert to identifiers if they keyword does not apply in the context where
|
||||
** it appears.
|
||||
*/
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#ifdef YYFALLBACK
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||||
static const YYCODETYPE yyFallback[] = {
|
||||
%%
|
||||
};
|
||||
#endif /* YYFALLBACK */
|
||||
|
||||
/* The following structure represents a single element of the
|
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** parser's stack. Information stored includes:
|
||||
**
|
||||
** + The state number for the parser at this level of the stack.
|
||||
**
|
||||
** + The value of the token stored at this level of the stack.
|
||||
** (In other words, the "major" token.)
|
||||
**
|
||||
** + The semantic value stored at this level of the stack. This is
|
||||
** the information used by the action routines in the grammar.
|
||||
** It is sometimes called the "minor" token.
|
||||
**
|
||||
** After the "shift" half of a SHIFTREDUCE action, the stateno field
|
||||
** actually contains the reduce action for the second half of the
|
||||
** SHIFTREDUCE.
|
||||
*/
|
||||
struct yyStackEntry {
|
||||
YYACTIONTYPE stateno; /* The state-number, or reduce action in SHIFTREDUCE */
|
||||
YYCODETYPE major; /* The major token value. This is the code
|
||||
** number for the token at this stack level */
|
||||
YYMINORTYPE minor; /* The user-supplied minor token value. This
|
||||
** is the value of the token */
|
||||
};
|
||||
typedef struct yyStackEntry yyStackEntry;
|
||||
|
||||
/* The state of the parser is completely contained in an instance of
|
||||
** the following structure */
|
||||
struct yyParser {
|
||||
int yyidx; /* Index of top element in stack */
|
||||
#ifdef YYTRACKMAXSTACKDEPTH
|
||||
int yyidxMax; /* Maximum value of yyidx */
|
||||
#endif
|
||||
int yyerrcnt; /* Shifts left before out of the error */
|
||||
ParseARG_SDECL /* A place to hold %extra_argument */
|
||||
#if YYSTACKDEPTH<=0
|
||||
int yystksz; /* Current side of the stack */
|
||||
yyStackEntry *yystack; /* The parser's stack */
|
||||
#else
|
||||
yyStackEntry yystack[YYSTACKDEPTH]; /* The parser's stack */
|
||||
#endif
|
||||
};
|
||||
typedef struct yyParser yyParser;
|
||||
|
||||
#ifndef NDEBUG
|
||||
#include <stdio.h>
|
||||
static FILE *yyTraceFILE = 0;
|
||||
static char *yyTracePrompt = 0;
|
||||
#endif /* NDEBUG */
|
||||
|
||||
#ifndef NDEBUG
|
||||
/*
|
||||
** Turn parser tracing on by giving a stream to which to write the trace
|
||||
** and a prompt to preface each trace message. Tracing is turned off
|
||||
** by making either argument NULL
|
||||
**
|
||||
** Inputs:
|
||||
** <ul>
|
||||
** <li> A FILE* to which trace output should be written.
|
||||
** If NULL, then tracing is turned off.
|
||||
** <li> A prefix string written at the beginning of every
|
||||
** line of trace output. If NULL, then tracing is
|
||||
** turned off.
|
||||
** </ul>
|
||||
**
|
||||
** Outputs:
|
||||
** None.
|
||||
*/
|
||||
void ParseTrace(FILE *TraceFILE, char *zTracePrompt){
|
||||
yyTraceFILE = TraceFILE;
|
||||
yyTracePrompt = zTracePrompt;
|
||||
if( yyTraceFILE==0 ) yyTracePrompt = 0;
|
||||
else if( yyTracePrompt==0 ) yyTraceFILE = 0;
|
||||
}
|
||||
#endif /* NDEBUG */
|
||||
|
||||
#ifndef NDEBUG
|
||||
/* For tracing shifts, the names of all terminals and nonterminals
|
||||
** are required. The following table supplies these names */
|
||||
static const char *const yyTokenName[] = {
|
||||
%%
|
||||
};
|
||||
#endif /* NDEBUG */
|
||||
|
||||
#ifndef NDEBUG
|
||||
/* For tracing reduce actions, the names of all rules are required.
|
||||
*/
|
||||
static const char *const yyRuleName[] = {
|
||||
%%
|
||||
};
|
||||
#endif /* NDEBUG */
|
||||
|
||||
|
||||
#if YYSTACKDEPTH<=0
|
||||
/*
|
||||
** Try to increase the size of the parser stack.
|
||||
*/
|
||||
static void yyGrowStack(yyParser *p){
|
||||
int newSize;
|
||||
yyStackEntry *pNew;
|
||||
|
||||
newSize = p->yystksz*2 + 100;
|
||||
pNew = realloc(p->yystack, newSize*sizeof(pNew[0]));
|
||||
if( pNew ){
|
||||
p->yystack = pNew;
|
||||
p->yystksz = newSize;
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sStack grows to %d entries!\n",
|
||||
yyTracePrompt, p->yystksz);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Datatype of the argument to the memory allocated passed as the
|
||||
** second argument to ParseAlloc() below. This can be changed by
|
||||
** putting an appropriate #define in the %include section of the input
|
||||
** grammar.
|
||||
*/
|
||||
#ifndef YYMALLOCARGTYPE
|
||||
# define YYMALLOCARGTYPE size_t
|
||||
#endif
|
||||
|
||||
/*
|
||||
** This function allocates a new parser.
|
||||
** The only argument is a pointer to a function which works like
|
||||
** malloc.
|
||||
**
|
||||
** Inputs:
|
||||
** A pointer to the function used to allocate memory.
|
||||
**
|
||||
** Outputs:
|
||||
** A pointer to a parser. This pointer is used in subsequent calls
|
||||
** to Parse and ParseFree.
|
||||
*/
|
||||
void *ParseAlloc(void *(*mallocProc)(YYMALLOCARGTYPE)){
|
||||
yyParser *pParser;
|
||||
pParser = (yyParser*)(*mallocProc)( (YYMALLOCARGTYPE)sizeof(yyParser) );
|
||||
if( pParser ){
|
||||
pParser->yyidx = -1;
|
||||
#ifdef YYTRACKMAXSTACKDEPTH
|
||||
pParser->yyidxMax = 0;
|
||||
#endif
|
||||
#if YYSTACKDEPTH<=0
|
||||
pParser->yystack = NULL;
|
||||
pParser->yystksz = 0;
|
||||
yyGrowStack(pParser);
|
||||
#endif
|
||||
}
|
||||
return pParser;
|
||||
}
|
||||
|
||||
/* The following function deletes the "minor type" or semantic value
|
||||
** associated with a symbol. The symbol can be either a terminal
|
||||
** or nonterminal. "yymajor" is the symbol code, and "yypminor" is
|
||||
** a pointer to the value to be deleted. The code used to do the
|
||||
** deletions is derived from the %destructor and/or %token_destructor
|
||||
** directives of the input grammar.
|
||||
*/
|
||||
static void yy_destructor(
|
||||
yyParser *yypParser, /* The parser */
|
||||
YYCODETYPE yymajor, /* Type code for object to destroy */
|
||||
YYMINORTYPE *yypminor /* The object to be destroyed */
|
||||
){
|
||||
ParseARG_FETCH;
|
||||
switch( yymajor ){
|
||||
/* Here is inserted the actions which take place when a
|
||||
** terminal or non-terminal is destroyed. This can happen
|
||||
** when the symbol is popped from the stack during a
|
||||
** reduce or during error processing or when a parser is
|
||||
** being destroyed before it is finished parsing.
|
||||
**
|
||||
** Note: during a reduce, the only symbols destroyed are those
|
||||
** which appear on the RHS of the rule, but which are *not* used
|
||||
** inside the C code.
|
||||
*/
|
||||
/********* Begin destructor definitions ***************************************/
|
||||
%%
|
||||
/********* End destructor definitions *****************************************/
|
||||
default: break; /* If no destructor action specified: do nothing */
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** Pop the parser's stack once.
|
||||
**
|
||||
** If there is a destructor routine associated with the token which
|
||||
** is popped from the stack, then call it.
|
||||
*/
|
||||
static void yy_pop_parser_stack(yyParser *pParser){
|
||||
yyStackEntry *yytos;
|
||||
assert( pParser->yyidx>=0 );
|
||||
yytos = &pParser->yystack[pParser->yyidx--];
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sPopping %s\n",
|
||||
yyTracePrompt,
|
||||
yyTokenName[yytos->major]);
|
||||
}
|
||||
#endif
|
||||
yy_destructor(pParser, yytos->major, &yytos->minor);
|
||||
}
|
||||
|
||||
/*
|
||||
** Deallocate and destroy a parser. Destructors are called for
|
||||
** all stack elements before shutting the parser down.
|
||||
**
|
||||
** If the YYPARSEFREENEVERNULL macro exists (for example because it
|
||||
** is defined in a %include section of the input grammar) then it is
|
||||
** assumed that the input pointer is never NULL.
|
||||
*/
|
||||
void ParseFree(
|
||||
void *p, /* The parser to be deleted */
|
||||
void (*freeProc)(void*) /* Function used to reclaim memory */
|
||||
){
|
||||
yyParser *pParser = (yyParser*)p;
|
||||
#ifndef YYPARSEFREENEVERNULL
|
||||
if( pParser==0 ) return;
|
||||
#endif
|
||||
while( pParser->yyidx>=0 ) yy_pop_parser_stack(pParser);
|
||||
#if YYSTACKDEPTH<=0
|
||||
free(pParser->yystack);
|
||||
#endif
|
||||
(*freeProc)((void*)pParser);
|
||||
}
|
||||
|
||||
/*
|
||||
** Return the peak depth of the stack for a parser.
|
||||
*/
|
||||
#ifdef YYTRACKMAXSTACKDEPTH
|
||||
int ParseStackPeak(void *p){
|
||||
yyParser *pParser = (yyParser*)p;
|
||||
return pParser->yyidxMax;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Find the appropriate action for a parser given the terminal
|
||||
** look-ahead token iLookAhead.
|
||||
*/
|
||||
static int yy_find_shift_action(
|
||||
yyParser *pParser, /* The parser */
|
||||
YYCODETYPE iLookAhead /* The look-ahead token */
|
||||
){
|
||||
int i;
|
||||
int stateno = pParser->yystack[pParser->yyidx].stateno;
|
||||
|
||||
if( stateno>=YY_MIN_REDUCE ) return stateno;
|
||||
assert( stateno <= YY_SHIFT_COUNT );
|
||||
do{
|
||||
i = yy_shift_ofst[stateno];
|
||||
if( i==YY_SHIFT_USE_DFLT ) return yy_default[stateno];
|
||||
assert( iLookAhead!=YYNOCODE );
|
||||
i += iLookAhead;
|
||||
if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
|
||||
if( iLookAhead>0 ){
|
||||
#ifdef YYFALLBACK
|
||||
YYCODETYPE iFallback; /* Fallback token */
|
||||
if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
|
||||
&& (iFallback = yyFallback[iLookAhead])!=0 ){
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
|
||||
yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
|
||||
}
|
||||
#endif
|
||||
assert( yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
|
||||
iLookAhead = iFallback;
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
#ifdef YYWILDCARD
|
||||
{
|
||||
int j = i - iLookAhead + YYWILDCARD;
|
||||
if(
|
||||
#if YY_SHIFT_MIN+YYWILDCARD<0
|
||||
j>=0 &&
|
||||
#endif
|
||||
#if YY_SHIFT_MAX+YYWILDCARD>=YY_ACTTAB_COUNT
|
||||
j<YY_ACTTAB_COUNT &&
|
||||
#endif
|
||||
yy_lookahead[j]==YYWILDCARD
|
||||
){
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n",
|
||||
yyTracePrompt, yyTokenName[iLookAhead],
|
||||
yyTokenName[YYWILDCARD]);
|
||||
}
|
||||
#endif /* NDEBUG */
|
||||
return yy_action[j];
|
||||
}
|
||||
}
|
||||
#endif /* YYWILDCARD */
|
||||
}
|
||||
return yy_default[stateno];
|
||||
}else{
|
||||
return yy_action[i];
|
||||
}
|
||||
}while(1);
|
||||
}
|
||||
|
||||
/*
|
||||
** Find the appropriate action for a parser given the non-terminal
|
||||
** look-ahead token iLookAhead.
|
||||
*/
|
||||
static int yy_find_reduce_action(
|
||||
int stateno, /* Current state number */
|
||||
YYCODETYPE iLookAhead /* The look-ahead token */
|
||||
){
|
||||
int i;
|
||||
#ifdef YYERRORSYMBOL
|
||||
if( stateno>YY_REDUCE_COUNT ){
|
||||
return yy_default[stateno];
|
||||
}
|
||||
#else
|
||||
assert( stateno<=YY_REDUCE_COUNT );
|
||||
#endif
|
||||
i = yy_reduce_ofst[stateno];
|
||||
assert( i!=YY_REDUCE_USE_DFLT );
|
||||
assert( iLookAhead!=YYNOCODE );
|
||||
i += iLookAhead;
|
||||
#ifdef YYERRORSYMBOL
|
||||
if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
|
||||
return yy_default[stateno];
|
||||
}
|
||||
#else
|
||||
assert( i>=0 && i<YY_ACTTAB_COUNT );
|
||||
assert( yy_lookahead[i]==iLookAhead );
|
||||
#endif
|
||||
return yy_action[i];
|
||||
}
|
||||
|
||||
/*
|
||||
** The following routine is called if the stack overflows.
|
||||
*/
|
||||
static void yyStackOverflow(yyParser *yypParser, YYMINORTYPE *yypMinor){
|
||||
ParseARG_FETCH;
|
||||
yypParser->yyidx--;
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt);
|
||||
}
|
||||
#endif
|
||||
while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
|
||||
/* Here code is inserted which will execute if the parser
|
||||
** stack every overflows */
|
||||
/******** Begin %stack_overflow code ******************************************/
|
||||
%%
|
||||
/******** End %stack_overflow code ********************************************/
|
||||
ParseARG_STORE; /* Suppress warning about unused %extra_argument var */
|
||||
}
|
||||
|
||||
/*
|
||||
** Print tracing information for a SHIFT action
|
||||
*/
|
||||
#ifndef NDEBUG
|
||||
static void yyTraceShift(yyParser *yypParser, int yyNewState){
|
||||
if( yyTraceFILE ){
|
||||
if( yyNewState<YYNSTATE ){
|
||||
fprintf(yyTraceFILE,"%sShift '%s', go to state %d\n",
|
||||
yyTracePrompt,yyTokenName[yypParser->yystack[yypParser->yyidx].major],
|
||||
yyNewState);
|
||||
}else{
|
||||
fprintf(yyTraceFILE,"%sShift '%s'\n",
|
||||
yyTracePrompt,yyTokenName[yypParser->yystack[yypParser->yyidx].major]);
|
||||
}
|
||||
}
|
||||
}
|
||||
#else
|
||||
# define yyTraceShift(X,Y)
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Perform a shift action.
|
||||
*/
|
||||
static void yy_shift(
|
||||
yyParser *yypParser, /* The parser to be shifted */
|
||||
int yyNewState, /* The new state to shift in */
|
||||
int yyMajor, /* The major token to shift in */
|
||||
YYMINORTYPE *yypMinor /* Pointer to the minor token to shift in */
|
||||
){
|
||||
yyStackEntry *yytos;
|
||||
yypParser->yyidx++;
|
||||
#ifdef YYTRACKMAXSTACKDEPTH
|
||||
if( yypParser->yyidx>yypParser->yyidxMax ){
|
||||
yypParser->yyidxMax = yypParser->yyidx;
|
||||
}
|
||||
#endif
|
||||
#if YYSTACKDEPTH>0
|
||||
if( yypParser->yyidx>=YYSTACKDEPTH ){
|
||||
yyStackOverflow(yypParser, yypMinor);
|
||||
return;
|
||||
}
|
||||
#else
|
||||
if( yypParser->yyidx>=yypParser->yystksz ){
|
||||
yyGrowStack(yypParser);
|
||||
if( yypParser->yyidx>=yypParser->yystksz ){
|
||||
yyStackOverflow(yypParser, yypMinor);
|
||||
return;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
yytos = &yypParser->yystack[yypParser->yyidx];
|
||||
yytos->stateno = (YYACTIONTYPE)yyNewState;
|
||||
yytos->major = (YYCODETYPE)yyMajor;
|
||||
yytos->minor = *yypMinor;
|
||||
yyTraceShift(yypParser, yyNewState);
|
||||
}
|
||||
|
||||
/* The following table contains information about every rule that
|
||||
** is used during the reduce.
|
||||
*/
|
||||
static const struct {
|
||||
YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */
|
||||
unsigned char nrhs; /* Number of right-hand side symbols in the rule */
|
||||
} yyRuleInfo[] = {
|
||||
%%
|
||||
};
|
||||
|
||||
static void yy_accept(yyParser*); /* Forward Declaration */
|
||||
|
||||
/*
|
||||
** Perform a reduce action and the shift that must immediately
|
||||
** follow the reduce.
|
||||
*/
|
||||
static void yy_reduce(
|
||||
yyParser *yypParser, /* The parser */
|
||||
int yyruleno /* Number of the rule by which to reduce */
|
||||
){
|
||||
int yygoto; /* The next state */
|
||||
int yyact; /* The next action */
|
||||
YYMINORTYPE yygotominor; /* The LHS of the rule reduced */
|
||||
yyStackEntry *yymsp; /* The top of the parser's stack */
|
||||
int yysize; /* Amount to pop the stack */
|
||||
ParseARG_FETCH;
|
||||
yymsp = &yypParser->yystack[yypParser->yyidx];
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE && yyruleno>=0
|
||||
&& yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){
|
||||
yysize = yyRuleInfo[yyruleno].nrhs;
|
||||
fprintf(yyTraceFILE, "%sReduce [%s], go to state %d.\n", yyTracePrompt,
|
||||
yyRuleName[yyruleno], yymsp[-yysize].stateno);
|
||||
}
|
||||
#endif /* NDEBUG */
|
||||
yygotominor = yyzerominor;
|
||||
|
||||
switch( yyruleno ){
|
||||
/* Beginning here are the reduction cases. A typical example
|
||||
** follows:
|
||||
** case 0:
|
||||
** #line <lineno> <grammarfile>
|
||||
** { ... } // User supplied code
|
||||
** #line <lineno> <thisfile>
|
||||
** break;
|
||||
*/
|
||||
/********** Begin reduce actions **********************************************/
|
||||
%%
|
||||
/********** End reduce actions ************************************************/
|
||||
};
|
||||
assert( yyruleno>=0 && yyruleno<sizeof(yyRuleInfo)/sizeof(yyRuleInfo[0]) );
|
||||
yygoto = yyRuleInfo[yyruleno].lhs;
|
||||
yysize = yyRuleInfo[yyruleno].nrhs;
|
||||
yypParser->yyidx -= yysize;
|
||||
yyact = yy_find_reduce_action(yymsp[-yysize].stateno,(YYCODETYPE)yygoto);
|
||||
if( yyact <= YY_MAX_SHIFTREDUCE ){
|
||||
if( yyact>YY_MAX_SHIFT ) yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
|
||||
/* If the reduce action popped at least
|
||||
** one element off the stack, then we can push the new element back
|
||||
** onto the stack here, and skip the stack overflow test in yy_shift().
|
||||
** That gives a significant speed improvement. */
|
||||
if( yysize ){
|
||||
yypParser->yyidx++;
|
||||
yymsp -= yysize-1;
|
||||
yymsp->stateno = (YYACTIONTYPE)yyact;
|
||||
yymsp->major = (YYCODETYPE)yygoto;
|
||||
yymsp->minor = yygotominor;
|
||||
yyTraceShift(yypParser, yyact);
|
||||
}else{
|
||||
yy_shift(yypParser,yyact,yygoto,&yygotominor);
|
||||
}
|
||||
}else{
|
||||
assert( yyact == YY_ACCEPT_ACTION );
|
||||
yy_accept(yypParser);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** The following code executes when the parse fails
|
||||
*/
|
||||
#ifndef YYNOERRORRECOVERY
|
||||
static void yy_parse_failed(
|
||||
yyParser *yypParser /* The parser */
|
||||
){
|
||||
ParseARG_FETCH;
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt);
|
||||
}
|
||||
#endif
|
||||
while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
|
||||
/* Here code is inserted which will be executed whenever the
|
||||
** parser fails */
|
||||
/************ Begin %parse_failure code ***************************************/
|
||||
%%
|
||||
/************ End %parse_failure code *****************************************/
|
||||
ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
|
||||
}
|
||||
#endif /* YYNOERRORRECOVERY */
|
||||
|
||||
/*
|
||||
** The following code executes when a syntax error first occurs.
|
||||
*/
|
||||
static void yy_syntax_error(
|
||||
yyParser *yypParser, /* The parser */
|
||||
int yymajor, /* The major type of the error token */
|
||||
YYMINORTYPE yyminor /* The minor type of the error token */
|
||||
){
|
||||
ParseARG_FETCH;
|
||||
#define TOKEN (yyminor.yy0)
|
||||
/************ Begin %syntax_error code ****************************************/
|
||||
%%
|
||||
/************ End %syntax_error code ******************************************/
|
||||
ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
|
||||
}
|
||||
|
||||
/*
|
||||
** The following is executed when the parser accepts
|
||||
*/
|
||||
static void yy_accept(
|
||||
yyParser *yypParser /* The parser */
|
||||
){
|
||||
ParseARG_FETCH;
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt);
|
||||
}
|
||||
#endif
|
||||
while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser);
|
||||
/* Here code is inserted which will be executed whenever the
|
||||
** parser accepts */
|
||||
/*********** Begin %parse_accept code *****************************************/
|
||||
%%
|
||||
/*********** End %parse_accept code *******************************************/
|
||||
ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */
|
||||
}
|
||||
|
||||
/* The main parser program.
|
||||
** The first argument is a pointer to a structure obtained from
|
||||
** "ParseAlloc" which describes the current state of the parser.
|
||||
** The second argument is the major token number. The third is
|
||||
** the minor token. The fourth optional argument is whatever the
|
||||
** user wants (and specified in the grammar) and is available for
|
||||
** use by the action routines.
|
||||
**
|
||||
** Inputs:
|
||||
** <ul>
|
||||
** <li> A pointer to the parser (an opaque structure.)
|
||||
** <li> The major token number.
|
||||
** <li> The minor token number.
|
||||
** <li> An option argument of a grammar-specified type.
|
||||
** </ul>
|
||||
**
|
||||
** Outputs:
|
||||
** None.
|
||||
*/
|
||||
void Parse(
|
||||
void *yyp, /* The parser */
|
||||
int yymajor, /* The major token code number */
|
||||
ParseTOKENTYPE yyminor /* The value for the token */
|
||||
ParseARG_PDECL /* Optional %extra_argument parameter */
|
||||
){
|
||||
YYMINORTYPE yyminorunion;
|
||||
int yyact; /* The parser action. */
|
||||
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
|
||||
int yyendofinput; /* True if we are at the end of input */
|
||||
#endif
|
||||
#ifdef YYERRORSYMBOL
|
||||
int yyerrorhit = 0; /* True if yymajor has invoked an error */
|
||||
#endif
|
||||
yyParser *yypParser; /* The parser */
|
||||
|
||||
/* (re)initialize the parser, if necessary */
|
||||
yypParser = (yyParser*)yyp;
|
||||
if( yypParser->yyidx<0 ){
|
||||
#if YYSTACKDEPTH<=0
|
||||
if( yypParser->yystksz <=0 ){
|
||||
/*memset(&yyminorunion, 0, sizeof(yyminorunion));*/
|
||||
yyminorunion = yyzerominor;
|
||||
yyStackOverflow(yypParser, &yyminorunion);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
yypParser->yyidx = 0;
|
||||
yypParser->yyerrcnt = -1;
|
||||
yypParser->yystack[0].stateno = 0;
|
||||
yypParser->yystack[0].major = 0;
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sInitialize. Empty stack. State 0\n",
|
||||
yyTracePrompt);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
yyminorunion.yy0 = yyminor;
|
||||
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
|
||||
yyendofinput = (yymajor==0);
|
||||
#endif
|
||||
ParseARG_STORE;
|
||||
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sInput '%s'\n",yyTracePrompt,yyTokenName[yymajor]);
|
||||
}
|
||||
#endif
|
||||
|
||||
do{
|
||||
yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor);
|
||||
if( yyact <= YY_MAX_SHIFTREDUCE ){
|
||||
if( yyact > YY_MAX_SHIFT ) yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
|
||||
yy_shift(yypParser,yyact,yymajor,&yyminorunion);
|
||||
yypParser->yyerrcnt--;
|
||||
yymajor = YYNOCODE;
|
||||
}else if( yyact <= YY_MAX_REDUCE ){
|
||||
yy_reduce(yypParser,yyact-YY_MIN_REDUCE);
|
||||
}else{
|
||||
assert( yyact == YY_ERROR_ACTION );
|
||||
#ifdef YYERRORSYMBOL
|
||||
int yymx;
|
||||
#endif
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sSyntax Error!\n",yyTracePrompt);
|
||||
}
|
||||
#endif
|
||||
#ifdef YYERRORSYMBOL
|
||||
/* A syntax error has occurred.
|
||||
** The response to an error depends upon whether or not the
|
||||
** grammar defines an error token "ERROR".
|
||||
**
|
||||
** This is what we do if the grammar does define ERROR:
|
||||
**
|
||||
** * Call the %syntax_error function.
|
||||
**
|
||||
** * Begin popping the stack until we enter a state where
|
||||
** it is legal to shift the error symbol, then shift
|
||||
** the error symbol.
|
||||
**
|
||||
** * Set the error count to three.
|
||||
**
|
||||
** * Begin accepting and shifting new tokens. No new error
|
||||
** processing will occur until three tokens have been
|
||||
** shifted successfully.
|
||||
**
|
||||
*/
|
||||
if( yypParser->yyerrcnt<0 ){
|
||||
yy_syntax_error(yypParser,yymajor,yyminorunion);
|
||||
}
|
||||
yymx = yypParser->yystack[yypParser->yyidx].major;
|
||||
if( yymx==YYERRORSYMBOL || yyerrorhit ){
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
fprintf(yyTraceFILE,"%sDiscard input token %s\n",
|
||||
yyTracePrompt,yyTokenName[yymajor]);
|
||||
}
|
||||
#endif
|
||||
yy_destructor(yypParser, (YYCODETYPE)yymajor,&yyminorunion);
|
||||
yymajor = YYNOCODE;
|
||||
}else{
|
||||
while(
|
||||
yypParser->yyidx >= 0 &&
|
||||
yymx != YYERRORSYMBOL &&
|
||||
(yyact = yy_find_reduce_action(
|
||||
yypParser->yystack[yypParser->yyidx].stateno,
|
||||
YYERRORSYMBOL)) >= YY_MIN_REDUCE
|
||||
){
|
||||
yy_pop_parser_stack(yypParser);
|
||||
}
|
||||
if( yypParser->yyidx < 0 || yymajor==0 ){
|
||||
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
|
||||
yy_parse_failed(yypParser);
|
||||
yymajor = YYNOCODE;
|
||||
}else if( yymx!=YYERRORSYMBOL ){
|
||||
YYMINORTYPE u2;
|
||||
u2.YYERRSYMDT = 0;
|
||||
yy_shift(yypParser,yyact,YYERRORSYMBOL,&u2);
|
||||
}
|
||||
}
|
||||
yypParser->yyerrcnt = 3;
|
||||
yyerrorhit = 1;
|
||||
#elif defined(YYNOERRORRECOVERY)
|
||||
/* If the YYNOERRORRECOVERY macro is defined, then do not attempt to
|
||||
** do any kind of error recovery. Instead, simply invoke the syntax
|
||||
** error routine and continue going as if nothing had happened.
|
||||
**
|
||||
** Applications can set this macro (for example inside %include) if
|
||||
** they intend to abandon the parse upon the first syntax error seen.
|
||||
*/
|
||||
yy_syntax_error(yypParser,yymajor,yyminorunion);
|
||||
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
|
||||
yymajor = YYNOCODE;
|
||||
|
||||
#else /* YYERRORSYMBOL is not defined */
|
||||
/* This is what we do if the grammar does not define ERROR:
|
||||
**
|
||||
** * Report an error message, and throw away the input token.
|
||||
**
|
||||
** * If the input token is $, then fail the parse.
|
||||
**
|
||||
** As before, subsequent error messages are suppressed until
|
||||
** three input tokens have been successfully shifted.
|
||||
*/
|
||||
if( yypParser->yyerrcnt<=0 ){
|
||||
yy_syntax_error(yypParser,yymajor,yyminorunion);
|
||||
}
|
||||
yypParser->yyerrcnt = 3;
|
||||
yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
|
||||
if( yyendofinput ){
|
||||
yy_parse_failed(yypParser);
|
||||
}
|
||||
yymajor = YYNOCODE;
|
||||
#endif
|
||||
}
|
||||
}while( yymajor!=YYNOCODE && yypParser->yyidx>=0 );
|
||||
#ifndef NDEBUG
|
||||
if( yyTraceFILE ){
|
||||
int i;
|
||||
fprintf(yyTraceFILE,"%sReturn. Stack=",yyTracePrompt);
|
||||
for(i=1; i<=yypParser->yyidx; i++)
|
||||
fprintf(yyTraceFILE,"%c%s", i==1 ? '[' : ' ',
|
||||
yyTokenName[yypParser->yystack[i].major]);
|
||||
fprintf(yyTraceFILE,"]\n");
|
||||
}
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
Reference in New Issue
Block a user