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blob: 03cb0a0492e71b063b0b0d0ee2d8ea506861553d [file] [log] [blame]
/*
* Copyright (c) 2021-2025 Symas Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of the Symas Corporation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <cassert>
#include <cstring>
#include <cstdio>
#include <algorithm>
#include <list>
#include <map>
#include <numeric>
#include <stack>
#include <string>
#define MAXLENGTH_FORMATTED_DATE 10
#define MAXLENGTH_FORMATTED_TIME 19
#define MAXLENGTH_CALENDAR_DATE 21
#define MAXLENGTH_FORMATTED_DATETIME 30
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
extern YYLTYPE yylloc;
extern int yylineno, yyleng, yychar;
extern char *yytext;
bool need_nume_set( bool tf = true );
bool max_errors_exceeded( int nerr );
extern cbl_label_t *next_sentence;
void next_sentence_label(cbl_label_t* label) {
parser_label_label(label);
next_sentence = NULL;
// release codegen label structure, so it can be reused.
assert(label->structs.goto_trees || mode_syntax_only());
free(label->structs.goto_trees);
label->structs.goto_trees = NULL;
}
void apply_declaratives();
const char * keyword_str( int token );
void labels_dump();
unsigned int cbl_dialects;
size_t cbl_gcobol_features;
static enum cbl_division_t current_division;
static size_t nparse_error = 0;
size_t parse_error_inc() {
mode_syntax_only(current_division);
return ++nparse_error;
}
size_t parse_error_count() { return nparse_error; }
void input_file_status_notify();
#define YYLLOC_DEFAULT(Current, Rhs, N) \
do { \
if (N) \
{ \
(Current).first_line = YYRHSLOC (Rhs, 1).first_line; \
(Current).first_column = YYRHSLOC (Rhs, 1).first_column; \
(Current).last_line = YYRHSLOC (Rhs, N).last_line; \
(Current).last_column = YYRHSLOC (Rhs, N).last_column; \
location_dump("parse.c", N, \
"rhs N ", YYRHSLOC (Rhs, N)); \
} \
else \
{ \
(Current).first_line = \
(Current).last_line = YYRHSLOC (Rhs, 0).last_line; \
(Current).first_column = \
(Current).last_column = YYRHSLOC (Rhs, 0).last_column; \
} \
location_dump("parse.c", __LINE__, "current", (Current)); \
input_file_status_notify(); \
location_set(Current); \
} while (0)
int yylex(void);
extern int yydebug;
#include <cstdarg>
const char *
consistent_encoding_check( const YYLTYPE& loc, const char input[] ) {
cbl_field_t faux = {};
faux.type = FldAlphanumeric;
faux.data.capacity = capacity_cast(strlen(input));
faux.data.initial = input;
auto s = faux.internalize();
if( !s ) {
error_msg(loc, "inconsistent string literal encoding for '%s'", input);
} else {
if( s != input ) return s;
}
return NULL;
}
const char * original_picture();
char * original_number( char input[] = NULL );
static const relop_t invalid_relop = static_cast<relop_t>(-1);
static cbl_refer_t null_reference;
static cbl_field_t *literally_one, *literally_zero;
cbl_field_t *
literal_of( size_t value ) {
switch(value) {
case 0: return literally_zero;
case 1: return literally_one;
}
cbl_err("logic error: %s: " HOST_SIZE_T_PRINT_UNSIGNED " not supported",
__func__, (fmt_size_t)value);
return NULL;
}
enum data_section_t { // values reflect mandatory order
not_data_datasect_e,
file_datasect_e,
working_storage_datasect_e,
local_storage_datasect_e,
linkage_datasect_e,
} current_data_section;
static bool current_data_section_set( const YYLTYPE& loc, enum data_section_t );
enum data_clause_t {
picture_clause_e = 0x0001,
usage_clause_e = 0x0002,
value_clause_e = 0x0004,
occurs_clause_e = 0x0008,
global_clause_e = 0x0010,
external_clause_e = 0x0020,
justified_clause_e = 0x0040,
redefines_clause_e = 0x0080,
blank_zero_clause_e = 0x0100,
synched_clause_e = 0x0200,
sign_clause_e = 0x0400,
based_clause_e = 0x0800,
same_clause_e = 0x1000,
volatile_clause_e = 0x2000,
type_clause_e = 0x4000,
typedef_clause_e = 0x8000,
};
static inline bool
has_clause( int data_clauses, data_clause_t clause ) {
return clause == (data_clauses & clause);
}
static bool
is_cobol_charset( const char name[] ) {
auto eoname = name + strlen(name);
auto ok = std::all_of( name, eoname,
[]( char ch ) {
switch(ch) {
case '-':
case '_':
return true;
case '$': // maybe one day (IBM allows)
return false;
break;
}
return 0 != ISALNUM(ch);
} );
return ok;
}
bool
in_procedure_division(void) {
return current_division == procedure_div_e;
}
static inline bool
in_file_section(void) { return current_data_section == file_datasect_e; }
static cbl_refer_t *
intrinsic_inconsistent_parameter( size_t n, cbl_refer_t *args );
static int
intrinsic_token_of( const char name[] );
static inline bool
namcpy(const YYLTYPE& loc, cbl_name_t tgt, const char *src ) {
// snprintf(3): writes at most size bytes (including the terminating NUL byte)
auto len = snprintf(tgt, sizeof(cbl_name_t), "%s", src);
if( ! (0 < len && len < int(sizeof(cbl_name_t))) ) {
error_msg(loc, "name truncated to '%s' (max %zu characters)",
tgt, sizeof(cbl_name_t)-1);
return false;
}
return true;
}
cbl_field_t *
new_alphanumeric( size_t capacity = MAXIMUM_ALPHA_LENGTH,
const cbl_name_t name = nullptr );
static inline cbl_field_t *
new_alphanumeric( const cbl_name_t name ) {
return new_alphanumeric(MAXIMUM_ALPHA_LENGTH, name);
}
static inline cbl_refer_t *
new_reference( enum cbl_field_type_t type, const char *initial ) {
return new cbl_refer_t( new_temporary(type, initial) );
}
static inline cbl_refer_t *
new_reference( cbl_field_t *field ) {
return new cbl_refer_t(field);
}
static inline cbl_refer_t *
new_reference_like( const cbl_field_t& skel ) {
return new cbl_refer_t( new_temporary_like(skel) );
}
static void reject_refmod( YYLTYPE loc, const cbl_refer_t& );
static bool require_pointer( YYLTYPE loc, const cbl_refer_t& );
static bool require_integer( YYLTYPE loc, const cbl_refer_t& );
struct cbl_field_t * constant_of( size_t isym );
static const struct cbl_occurs_t nonarray = cbl_occurs_t();
using std::list;
static inline bool isquote( char ch ) {
return ch == '\'' || ch == '"';
}
static inline char * dequote( char input[] ) {
char *pend = input + strlen(input) - 1;
assert(isquote(*input));
assert(isquote(*pend));
assert(*input == *pend);
*input = *pend = '\0';
return ++input;
}
static const char *
name_of( cbl_field_t *field ) {
assert(field);
return field->name[0] == '_' && field->data.initial?
field->data.initial : field->name;
}
static const char *
nice_name_of( cbl_field_t *field ) {
auto name = name_of(field);
return name[0] == '_'? "" : name;
}
struct evaluate_elem_t {
size_t nother;
struct cbl_label_t label;
struct cbl_field_t *result;
struct case_t {
private:
relop_t oper;
public:
cbl_field_t *subject, *object, *cond;
explicit case_t( cbl_field_t * subject )
: oper(eq_op)
, subject(subject)
, object(NULL)
, cond( keep_temporary(FldConditional) )
{}
cbl_field_t * object_set( cbl_field_t *obj, relop_t op ) {
oper = op;
return object = obj;
}
inline relop_t op() const { return oper; }
void dump() const {
dbgmsg( " cond is '%s'\n\t"
"subject is '%s'\n\t"
" oper is %s \n\t"
" object is '%s'",
cond? xstrdup(field_str(cond)) : "none",
subject? xstrdup(field_str(subject)) : "none",
relop_str(oper),
object? xstrdup(field_str(object)) : "none");
}
static void Dump( const case_t& c ) { c.dump(); }
};
list<case_t> cases;
typedef list<case_t>::iterator case_iter;
case_iter pcase;
void dump() const {
dbgmsg( "nother=" HOST_SIZE_T_PRINT_UNSIGNED " label '%s', "
HOST_SIZE_T_PRINT_UNSIGNED " cases",
(fmt_size_t)nother, label.name, (fmt_size_t)cases.size() );
std::for_each( cases.begin(), cases.end(), case_t::Dump );
}
explicit evaluate_elem_t( const char skel[] )
: nother(0)
, label{LblEvaluate}
, result( keep_temporary(FldConditional) )
, pcase( cases.end() )
{
label.line = yylineno;
if( -1 == snprintf(label.name, sizeof(label.name),
"%.*s_%d", (int)sizeof(label.name)-6, skel, yylineno) ) {
yyerror("could not create unique label %<%s_%d%> because it is too long",
skel, yylineno);
}
}
size_t ncolumn() const { return cases.size(); }
size_t nready() const {
size_t n=0;
for( const auto& c : cases ) {
if( c.object == NULL ) break;
n++;
}
return n;
}
};
/*
* The file_X_args variables hold the arguments to parser_file_X. The
* X_body nonterminal collects the arguments, but we defer calling
* parser_file_X until either:
* 1. end of statement, implying sequentiality, or
* 2. ON ERROR, implying random access
* In the 2nd case, the call to parser_file_X is made at the top of
* the io_error nonterminal, before any statements are parsed. The
* effect is to delay the call only until we've parsed ON ERROR.
* Because there are no intervening statements, there's no need for a
* stack of arguments. One global does the trick.
*/
static class file_delete_args_t {
cbl_file_t *file;
public:
file_delete_args_t() : file(nullptr) {}
void init( cbl_file_t *file ) {
this->file = file;
}
bool ready() const { return file != nullptr; }
void call_parser_file_delete( bool sequentially ) {
parser_file_delete(file, sequentially);
file = nullptr;
}
} file_delete_args;
cbl_round_t current_rounded_mode();
static struct file_read_args_t {
cbl_file_t *file;
cbl_refer_t record, *read_into;
int where;
enum { where_unknown = 0 };
file_read_args_t() : file(NULL), read_into(NULL), where(where_unknown) {}
void
init( struct cbl_file_t *file,
const cbl_refer_t& record,
cbl_refer_t *read_into,
int where ) {
this->file = file;
this->record = record;
this->read_into = read_into;
this->where = where;
}
bool ready() const { return file != NULL; }
void default_march( bool sequential ) {
if( where == where_unknown ) {
where = sequential? -1 : 1;
}
}
void
call_parser_file_read( int w = where_unknown) {
if( w != where_unknown ) where = w;
if( where == where_unknown) {
switch( file->access ) {
case file_inaccessible_e:
case file_access_seq_e:
where = -1;
break;
case file_access_rnd_e:
where = 1;
break;
case file_access_dyn_e:
where = 1;
break;
}
}
parser_file_read(file, record, where);
if( read_into ) {
parser_move( *read_into, record, current_rounded_mode() );
}
*this = file_read_args_t();
}
} file_read_args;
static class file_return_args_t {
cbl_file_t *file;
public:
file_return_args_t() : file(NULL) {}
void init( cbl_file_t *file ) {
this->file = file;
}
bool ready() const { return file != NULL; }
void call_parser_return_start(const cbl_refer_t& into = cbl_refer_t() ) {
parser_return_start(file, into);
file = NULL;
}
} file_return_args;
static class file_rewrite_args_t {
cbl_file_t *file;
cbl_field_t *record;
public:
file_rewrite_args_t() : file(nullptr), record(nullptr) {}
void init( cbl_file_t *file, cbl_field_t *record ) {
this->file = file;
this->record = record;
}
bool ready() const { return file != nullptr; }
void call_parser_file_rewrite( bool sequentially ) {
sequentially = sequentially || file->access == file_access_seq_e;
if( file->access == file_access_rnd_e ) sequentially = false;
parser_file_rewrite(file, record, sequentially);
file = nullptr;
record = nullptr;
}
} file_rewrite_args;
static class file_start_args_t {
cbl_file_t *file;
public:
file_start_args_t() : file(NULL) {}
cbl_file_t * init( YYLTYPE loc, cbl_file_t *file ) {
this->file = file;
if( is_sequential(file) ) {
error_msg(loc, "START invalid with sequential file %s", file->name);
}
return file;
}
bool ready() const { return file != NULL; }
void call_parser_file_start() {
// not needed: parser_file_start(file, sequentially);
file = NULL;
}
} file_start_args;
static class file_write_args_t {
cbl_file_t *file;
cbl_field_t *data_source;
bool after;
cbl_refer_t *advance;
public:
file_write_args_t()
: file(nullptr)
, data_source(nullptr)
, after(false)
, advance(nullptr)
{}
cbl_file_t * init( cbl_file_t *file,
cbl_field_t *data_source,
bool after,
const cbl_refer_t *advance ) {
this->file = file;
this->data_source = data_source;
this->after = after;
this->advance = new cbl_refer_t(*advance);
return this->file;
}
bool ready() const { return file != nullptr; }
void call_parser_file_write( bool sequentially ) {
sequentially = sequentially || file->access == file_access_seq_e;
parser_file_write(file, data_source, after, *advance, sequentially);
*this = file_write_args_t();
}
} file_write_args;
/*
* Fields
*/
struct group_attr_t {
cbl_field_type_t default_usage; // for COMP-5 etc.
int encoding; // for ASCII, National, etc.
cbl_field_t *field;
group_attr_t( cbl_field_t *field,
cbl_field_type_t default_usage,
int encoding )
: default_usage(default_usage)
, encoding(encoding)
, field(field)
{}
};
struct refer_list_t;
struct arith_t {
cbl_arith_format_t format;
list<cbl_num_result_t> tgts;
list<cbl_refer_t> A, B;
cbl_refer_t remainder;
cbl_label_t *on_error, *not_error;
explicit arith_t( cbl_arith_format_t format )
: format(format), on_error(NULL), not_error(NULL)
{}
arith_t( cbl_arith_format_t format, refer_list_t * refers );
bool corresponding() const { return format == corresponding_e; }
void another_pair( size_t src, size_t tgt ) {
assert(src > 0 && tgt > 0);
cbl_refer_t a(A.front());
a.field = cbl_field_of(symbol_at(src));
A.push_back( a );
cbl_num_result_t res = tgts.front();
res.refer.field = cbl_field_of(symbol_at(tgt));
tgts.push_back( res );
dbgmsg("%s:%d: SRC: %3" GCC_PRISZ "u %s",
__func__, __LINE__, (fmt_size_t)src, a.str());
dbgmsg("%s:%d: to %3" GCC_PRISZ "u %s",
__func__, __LINE__, (fmt_size_t)tgt, res.refer.str());
}
void operator()( const corresponding_fields_t::const_reference elem ) {
another_pair( elem.first, elem.second );
}
const char * format_str() const {
switch(format) {
case not_expected_e: return "not_expected_e";
case no_giving_e: return "no_giving_e";
case giving_e: return "giving_e";
case corresponding_e: return "corresponding_e";
}
return "???";
}
};
static cbl_refer_t * ast_op( cbl_refer_t *lhs, char op, cbl_refer_t *rhs );
static void ast_add( arith_t *arith );
static bool ast_subtract( arith_t *arith );
static bool ast_multiply( arith_t *arith );
static bool ast_divide( arith_t *arith );
static cbl_field_type_t intrinsic_return_type( int token );
template <typename T>
static T* use_any( list<T>& src, T *tgt) {
if( src.empty() ) return NULL;
std::copy(src.begin(), src.end(), tgt);
src.clear();
return tgt;
}
template <typename T>
static T* use_any( list<T>& src, std::vector<T>& tgt) {
if( src.empty() ) return NULL;
std::copy(src.begin(), src.end(), tgt.begin());
src.clear();
return tgt.data();
}
class evaluate_t;
/*
* Evaluate
*/
class eval_subject_t {
friend evaluate_t;
struct { cbl_label_t *done, *yeah, *when; } labels;
cbl_field_t *result;
relop_t abbr_relop;
typedef std::list<cbl_refer_t> column_list_t;
column_list_t columns;
column_list_t::iterator pcol;
static cbl_label_t * label( const char skel[] );
void new_object_labels();
public:
eval_subject_t();
void append( const cbl_refer_t& field ) {
columns.push_back(field);
pcol = columns.begin();
}
cbl_label_t *yeah() { return labels.yeah; }
cbl_label_t *when() { return labels.when; }
cbl_label_t *done() { return labels.done; }
cbl_field_t *subject() const {
if( pcol == columns.end() ) return nullptr;
return pcol->field;
}
size_t subject_count() const { return columns.size(); }
size_t object_count() { return std::distance(columns.begin(), pcol); }
void object_relop( relop_t op ) { abbr_relop = op; }
relop_t object_relop() const { return abbr_relop; }
void rewind() { pcol = columns.begin(); }
bool compatible( const cbl_field_t *object ) const;
// compare sets result
cbl_field_t * compare( int token );
cbl_field_t * compare( relop_t op,
const cbl_refer_t& object, bool deciding = false);
cbl_field_t * compare( const cbl_refer_t& object,
const cbl_refer_t& object2 = nullptr);
void write_when_label() {
parser_label_label(labels.when);
labels.when = label("when");
}
void write_yeah_label() {
parser_label_label(labels.yeah);
labels.yeah = label("yeah");
}
// decide() calls codegen with the result and increments the subject column.
// On FALSE, skip past <statements> and fall into next WHEN.
bool decided( cbl_field_t *result ) {
this->result = result;
parser_if( result );
parser_else();
parser_label_goto( labels.when );
parser_fi();
pcol++;
return true;
}
bool decide( int token ) {
if( pcol == columns.end() ) return false;
if( compare( token ) ) {
parser_if( result );
parser_else();
parser_label_goto( labels.when );
parser_fi();
}
pcol++;
return true;
}
bool decide( const cbl_refer_t& object, bool invert ) {
if( pcol == columns.end() ) return false;
if( compare( object ) ) {
if( invert ) {
parser_logop( result, NULL, not_op, result );
}
parser_if( result );
parser_else();
parser_label_goto( labels.when );
parser_fi();
}
pcol++;
return true;
}
bool decide( relop_t op, const cbl_refer_t& object, bool invert ) {
if( pcol == columns.end() ) return false;
dbgmsg("%s() if not %s goto %s", __func__, result->name, when()->name);
if( compare(op, object, true) ) {
if( invert ) {
parser_logop( result, NULL, not_op, result );
}
parser_if( result );
parser_else();
parser_label_goto( labels.when );
parser_fi();
}
pcol++;
return true;
}
bool decide( const cbl_refer_t& object, const cbl_refer_t& object2, bool invert ) {
if( pcol == columns.end() ) return false;
if( compare(object, object2) ) {
if( invert ) {
parser_logop( result, NULL, not_op, result );
}
parser_if( result );
parser_else();
parser_label_goto( labels.when );
parser_fi();
}
pcol++;
return true;
}
};
class evaluate_t : private std::stack<eval_subject_t> {
public:
size_t depth() const { return size(); }
void alloc() {
push(eval_subject_t());
}
void free() { assert(!empty()); pop(); }
eval_subject_t& current() {
assert(!empty());
if( yydebug ) {
auto& ev( top() );
dbgmsg("eval_subject: res: %s, When %s, Yeah %s, Done %s",
ev.result->name,
ev.when()->name, ev.yeah()->name, ev.done()->name);
}
return top();
}
} eval_stack;
static void dump_inspect( const cbl_inspect_t& i );
void dump_inspect_match( const cbl_inspect_match_t& M );
struct perform_t {
struct cbl_perform_tgt_t tgt;
bool before;
list<cbl_perform_vary_t> varys;
list<cbl_declarative_t> dcls;
struct ec_labels_t {
cbl_label_t
*init, // Format 3, code that installs handlers
*fini, // Format 3, code that reverts handlers
*top, // Format 3, above imperative-statement-1
*from, // Format 3, imperative-statement-1
*finally,
*other, *common;
ec_labels_t()
: init(NULL), fini(NULL),
top(NULL), from(NULL), finally(NULL),
other(NULL), common(NULL)
{}
void generate() {
init = new_label( LblLoop, "init" );
fini = new_label( LblLoop, "fini" );
top = new_label( LblLoop, "top" );
from = new_label( LblLoop, "from" );
other = new_label( LblLoop, "other" );
common = new_label( LblLoop, "common" );
finally = new_label( LblLoop, "finally" );
}
static cbl_label_t *
new_label( cbl_label_type_t type, const cbl_name_t role );
} ec_labels;
struct {
cbl_label_t *start, *end;
cbl_field_t *unsatisfied, *size;
cbl_refer_t table;
} search;
explicit perform_t( cbl_label_t *from, cbl_label_t *to = NULL )
: tgt( from, to ), before(true)
, search()
{}
~perform_t() { varys.clear(); }
cbl_field_t * until() {
assert(!varys.empty());
cbl_field_t *f = varys.front().until;
assert(f->type == FldConditional);
return f;
}
};
static list<perform_t> performs;
static inline perform_t *
perform_alloc() {
performs.push_back(perform_t(NULL));
return &performs.back();
}
static inline void
perform_free(void) {
assert(performs.size() > 0);
performs.pop_back();
}
static inline perform_t *
perform_current(void) {
assert(performs.size() > 0);
return &performs.back();
}
static inline perform_t *
perform_tgt_set( cbl_label_t *from, cbl_label_t *to = NULL ) {
struct perform_t *perf = perform_current();
perf->tgt = cbl_perform_tgt_t(from, to);
return perf;
}
#define PERFORM_EXCEPT 1
static void
perform_ec_setup() {
struct perform_t *perf = perform_current();
perf->ec_labels.generate();
perf->tgt.from( perf->ec_labels.from );
#if PERFORM_EXCEPT
parser_label_goto(perf->ec_labels.init);
parser_label_label(perf->ec_labels.top);
#endif
parser_perform_start(&perf->tgt);
}
static void
perform_ec_cleanup() {
struct perform_t *perf = perform_current();
#if PERFORM_EXCEPT
parser_label_goto(perf->ec_labels.fini);
parser_label_label(perf->ec_labels.init);
/* ... empty init block ... */
parser_label_goto(perf->ec_labels.top);
parser_label_label(perf->ec_labels.fini);
#endif
}
static list<cbl_label_t*> searches;
static inline cbl_label_t *
search_alloc( cbl_label_t *name ) {
searches.push_back(name);
return searches.back();
}
static inline void
search_free(void) {
assert(searches.size() > 0);
searches.pop_back();
}
static inline cbl_label_t *
search_current(void) {
assert(searches.size() > 0);
return searches.back();
}
static list<cbl_num_result_t> rhs;
typedef list<cbl_num_result_t>::iterator rhs_iter;
struct tgt_list_t {
list<cbl_num_result_t> targets;
};
static struct cbl_label_t *
label_add( const YYLTYPE& loc, enum cbl_label_type_t type, const char name[] );
static struct cbl_label_t *
label_add( enum cbl_label_type_t type, const char name[], int line );
static struct cbl_label_t *
paragraph_reference( const char name[], size_t section );
static inline void
list_add( list<cbl_num_result_t>& list, const cbl_refer_t& refer, int round ) {
struct cbl_num_result_t arg = { static_cast<cbl_round_t>(round), refer };
list.push_back(arg);
}
static list<cbl_domain_t> domains;
typedef list<cbl_domain_t>::iterator domain_iter;
/*
* The name queue is a queue of lists of data-item names recognized by the
* lexer, but not returned to the parser. These lists are "teed up" by the
* lexer until no more qualifiers are found. At that point, the last name is
* returned as a NAME or NAME88 token. NAME88 is returned only if a correctly,
* uniquely specified Level 88 data item is found in the symbol table (because
* else we can't know).
*
* When the parser gets a NAME or NAME88 token, it retrieves the pending list
* of qualifiers, if any, from the name queue. It adds the returned name to
* the list and calls symbol_find() to search the name map. For correctly
* specified names, the lexer has already done that work, which is now
* unfortunately repeated. For incorrect names, the parser emits a most useful
* diagnostic.
*/
static name_queue_t name_queue;
void
tee_up_empty() {
name_queue.allocate();
}
void
tee_up_name( const YYLTYPE& loc, const char name[] ) {
name_queue.push(loc, name);
}
cbl_namelist_t
teed_up_names() {
return name_queue_t::namelist_of( name_queue.peek() );
}
#define cdf_tokens cdf_current_tokens()
int
redefined_token( const cbl_name_t name ) {
return cdf_tokens.redefined_as(name);
}
struct file_list_t {
list<cbl_file_t*> files;
file_list_t() {}
explicit file_list_t( cbl_file_t* file ) {
files.push_back(file);
}
file_list_t( file_list_t& that ) : files(that.files.size()) {
std::copy( that.files.begin(), that.files.end(), files.begin() );
}
static size_t symbol_index( cbl_file_t* file ) {
return ::symbol_index( symbol_elem_of(file) );
}
};
struct field_list_t {
list<cbl_field_t*> fields;
field_list_t() {}
explicit field_list_t( cbl_field_t *field ) {
fields.push_back(field);
}
std::vector<const cbl_field_t*>
as_vector() const {
std::vector<const cbl_field_t*> output( fields.begin(), fields.end() );
return output;
}
};
cbl_field_t **
use_list( field_list_t *src, cbl_field_t *tgt[] ) {
assert(src);
std::copy(src->fields.begin(), src->fields.end(), tgt);
src->fields.clear();
delete src;
return tgt;
}
cbl_file_t **
use_list( list<cbl_file_t*>& src, bool clear = true ) {
if( src.empty() ) return NULL;
auto tgt = new cbl_file_t*[ src.size() ];
std::copy(src.begin(), src.end(), tgt);
if( clear )
src.clear();
return tgt;
}
struct refer_list_t {
list<cbl_refer_t> refers;
explicit refer_list_t( cbl_refer_t *refer ) {
if( refer ) {
refers.push_back(*refer);
delete refer;
}
}
refer_list_t * push_back( cbl_refer_t *refer ) {
refers.push_back(*refer);
delete refer;
return this;
}
inline list<cbl_refer_t>& items() { return refers; }
inline list<cbl_refer_t>::iterator begin() { return refers.begin(); }
inline list<cbl_refer_t>::iterator end() { return refers.end(); }
inline size_t size() const { return refers.size(); }
cbl_refer_t *
use_list( cbl_refer_t tgt[] ) {
std::copy(refers.begin(), refers.end(), tgt);
refers.clear();
return tgt;
}
std::vector<cbl_refer_t>
vectorize() {
std::vector<cbl_refer_t> tgt(refers.size());
std::copy(refers.begin(), refers.end(), tgt.begin());
refers.clear();
return tgt;
}
};
struct refer_marked_list_t : public refer_list_t {
cbl_refer_t *marker;
refer_marked_list_t() : refer_list_t(NULL), marker(NULL) {}
refer_marked_list_t( cbl_refer_t *marker, const refer_list_t *refers )
: refer_list_t(*refers), marker(marker) {}
refer_marked_list_t( cbl_refer_t *marker, cbl_refer_t *input )
: refer_list_t(input)
, marker(marker) {}
refer_marked_list_t * push_back( refer_list_t *refers ) {
push_back(refers);
return this;
}
refer_marked_list_t * push_on( cbl_refer_t *marker, cbl_refer_t *input ) {
refers.push_back(*input);
this->marker = marker;
return this;
}
};
struct refer_collection_t {
list<refer_marked_list_t> lists;
explicit refer_collection_t( const refer_marked_list_t& marked_list )
{
lists.push_back( marked_list );
}
refer_collection_t * push_back( const refer_marked_list_t& marked_list )
{
lists.push_back( marked_list );
return this;
}
const cbl_refer_t* last_delimiter() const {
return lists.back().marker;
}
cbl_refer_t* last_delimiter( cbl_refer_t* marker) {
return lists.back().marker = marker;
}
size_t total_size() const {
size_t n = 0;
for( auto p=lists.begin(); p != lists.end(); p++ ) {
n += p->refers.size();
}
return n;
}
};
void ast_inspect( YYLTYPE loc, cbl_refer_t& input, bool backward,
cbl_inspect_opers_t& inspects );
template <typename E>
struct elem_list_t {
list<E*> elems;
explicit elem_list_t( E *elem ) {
elems.push_back(elem);
}
void clear() {
for( auto p = elems.begin(); p != elems.add(); p++ ) {
delete *p;
}
elems.clear();
}
};
typedef elem_list_t<cbl_label_t> label_list_t;
template <typename L, typename E>
E use_list( L *src, E tgt ) {
assert(src);
std::copy(src->elems.begin(), src->elems.end(), tgt);
src->elems.clear();
delete src;
return tgt;
}
struct unstring_tgt_t {
cbl_refer_t *tgt, *delimiter, *count;
explicit unstring_tgt_t( cbl_refer_t *tgt,
cbl_refer_t *delimiter = NULL,
cbl_refer_t *count = NULL )
: tgt(tgt), delimiter(delimiter), count(count)
{}
static cbl_refer_t tgt_of( const unstring_tgt_t& that ) {
return maybe_empty(that.tgt);
}
static cbl_refer_t delimiter_of( const unstring_tgt_t& that ) {
return maybe_empty(that.delimiter);
}
static cbl_refer_t count_of( const unstring_tgt_t& that ) {
return maybe_empty(that.count);
}
private:
static cbl_refer_t maybe_empty( cbl_refer_t *p ) {
return p? *p : cbl_refer_t();
}
};
struct unstring_tgt_list_t {
list<unstring_tgt_t> unstring_tgts;
explicit unstring_tgt_list_t( unstring_tgt_t *unstring_tgt ) {
unstring_tgts.push_back(*unstring_tgt);
delete unstring_tgt;
}
unstring_tgt_list_t * push_back( unstring_tgt_t *unstring_tgt ) {
unstring_tgts.push_back(*unstring_tgt);
delete unstring_tgt;
return this;
}
size_t size() const { return unstring_tgts.size(); }
typedef cbl_refer_t xform_t( const unstring_tgt_t& that );
void use_list( std::vector<cbl_refer_t>& output, xform_t func ) {
std::transform( unstring_tgts.begin(),
unstring_tgts.end(),
output.begin(), func );
}
};
struct unstring_into_t : public unstring_tgt_list_t {
cbl_refer_t pointer, tally;
explicit unstring_into_t( unstring_tgt_list_t *tgt_list,
cbl_refer_t *pointer = NULL,
cbl_refer_t *tally = NULL )
: unstring_tgt_list_t(*tgt_list)
, pointer( pointer? *pointer : cbl_refer_t() )
, tally( tally? *tally : cbl_refer_t() )
{
delete tgt_list;
if( pointer ) delete pointer;
if( tally ) delete tally;
}
};
struct ffi_args_t {
list<cbl_ffi_arg_t> elems;
explicit ffi_args_t( cbl_ffi_arg_t *arg ) {
this->push_back(arg);
}
ffi_args_t( size_t narg, cbl_ffi_arg_t *args ) {
std::copy(args, args+narg, std::back_inserter(elems));
}
// set explicitly, or assume
ffi_args_t * push_back( cbl_ffi_arg_t *arg ) {
if( arg->crv == by_default_e ) {
arg->crv = elems.empty()? by_reference_e : elems.back().crv;
}
elems.push_back(*arg);
delete arg;
return this;
}
// infer reference/content/value from previous
ffi_args_t * push_back( cbl_refer_t* refer,
cbl_ffi_arg_attr_t attr = none_of_e ) {
cbl_ffi_crv_t crv = elems.empty()? by_reference_e : elems.back().crv;
cbl_ffi_arg_t arg( crv, refer, attr );
elems.push_back(arg);
return this;
}
void dump() const {
int i=0;
for( const auto& arg : elems ) {
dbgmsg( "%8d) %-10s %-16s %s", i++,
cbl_ffi_crv_str(arg.crv),
3 + cbl_field_type_str(arg.refer.field->type),
arg.refer.field->pretty_name() );
}
}
const char *
parameter_types() const {
auto output = new char[ 1 + elems.size() ];
auto p = std::transform( elems.begin(), elems.end(), output,
[]( auto arg ) {
return function_descr_t::parameter_type(*arg.field());
} );
assert(output < p);
p[-1] = '\0';
return output;
}
};
struct relop_abbr_t {
relop_t relop;
cbl_refer_t *rhs;
};
typedef struct elem_list_t<relop_abbr_t> relop_abbr__list_t;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wreorder"
struct sort_key_t : public field_list_t {
bool ascending;
sort_key_t( bool ascending, field_list_t key )
: ascending(ascending), field_list_t(key)
{}
};
#pragma GCC diagnostic pop
struct sort_keys_t {
list<sort_key_t> key_list;
};
struct file_sort_io_t {
file_list_t file_list;
cbl_perform_tgt_t tgt;
explicit file_sort_io_t( file_list_t& files ) : file_list(files) {}
explicit file_sort_io_t( cbl_perform_tgt_t& tgt ) : tgt(tgt.from(), tgt.to()) {}
size_t nfile() const { return file_list.files.size(); }
};
struct merge_t {
cbl_file_t *master;
list<cbl_file_t*> updates;
// collation missing
enum output_type_t { output_unknown_e,
output_proc_e,
output_file_e } type;
cbl_perform_tgt_t tgt;
list<cbl_file_t*> outputs;
explicit merge_t( cbl_file_t *input ) : master(input), type(output_unknown_e) {}
};
static list<merge_t> merges;
static inline merge_t&
merge_alloc( cbl_file_t *file ) {
merges.push_back(merge_t(file));
return merges.back();
}
static inline void
merge_free(void) {
assert(merges.size() > 0);
merges.pop_back();
}
static inline merge_t&
merge_current(void) {
assert(merges.size() > 0);
return merges.back();
}
static list<cbl_refer_t> lhs;
struct vargs_t {
std::list<cbl_refer_t> args;
vargs_t() {}
explicit vargs_t( struct cbl_refer_t *p ) { args.push_back(*p); delete p; }
void push_back( cbl_refer_t *p ) { args.push_back(*p); delete p; }
};
static const char intermediate[] = ":intermediate";
#include <set>
std::set<const char *> pristine_values;
// key is a name after DEBUGGING/ERROR/EXCEPTION
// value is the list of sections invoked
std::map<std::string, std::list<std::string>>
debugging_clients, error_clients, exception_clients;
class prog_descr_t {
std::set<std::string> call_targets, subprograms;
public:
std::set<function_descr_t> function_repository;
size_t program_index;
cbl_label_t *declaratives_eval, *paragraph, *section;
const char *collating_sequence;
struct locale_t {
cbl_name_t name; const char *os_name;
locale_t() : name(""), os_name(nullptr) {}
locale_t(const cbl_name_t name, const char *os_name)
: name(""), os_name(os_name) {
if( name ) {
bool ok = namcpy(YYLTYPE(), this->name, name);
gcc_assert(ok);
}
}
} locale;
cbl_options_t options;
explicit prog_descr_t( size_t isymbol )
: program_index(isymbol)
, declaratives_eval(NULL)
, paragraph(NULL)
, section(NULL)
, collating_sequence(NULL)
{}
std::set<std::string> external_targets() {
std::set<std::string> externals;
std::set_difference( call_targets.begin(), call_targets.end(),
subprograms.begin(), subprograms.end(),
std::inserter(externals, externals.begin()) );
return externals;
}
};
static char *
uniq_label_impl( const char stem[], int line ) {
char *name = xasprintf("%s_%d_%d", stem, yylineno, line);
return name;
}
#define uniq_label(S) uniq_label_impl( (S), __LINE__ )
/*
* One of these days, paragraph and section will have to move into
* prog_descr_t, because the current section and paragraph depend on the
* current program, which may be nested and "pop back" into existence at END
* PROGRAM.
*/
struct error_labels_t {
cbl_label_t *on_error, *not_error, *compute_error;
error_labels_t() : on_error(NULL), not_error(NULL), compute_error(NULL) {}
void clear() { on_error = not_error = compute_error = NULL; }
error_labels_t& generate() {
on_error = label_add(LblArith, uniq_label("arith"), yylineno);
not_error = label_add(LblArith, uniq_label("arith"), yylineno);
compute_error = label_add(LblCompute, uniq_label("compute"), yylineno);
return *this;
}
};
struct cbl_typedef_less {
bool operator()( const cbl_field_t *a, const cbl_field_t *b ) const {
auto result = strcasecmp(a->name, b->name);
if( result < 0 ) return true;
if( result > 0 ) return false;
// Names that match are different if they're in different programs
// and neither is external.
auto lhs = field_index(a);
auto rhs = field_index(b);
if( lhs != rhs ) {
if( !a->has_attr(external_e) && !b->has_attr(external_e) ) {
return lhs < rhs;
}
}
return false;
}
};
static bool
is_conditional( const cbl_field_t *field ) {
return FldConditional == field->type;
}
static bool
is_conditional( const cbl_refer_t *refer ) {
return is_conditional(refer->field);
}
typedef std::set< const cbl_field_t*, cbl_typedef_less > unique_typedefs_t;
static cbl_label_t * implicit_paragraph();
static cbl_label_t * implicit_section();
/*
* Incomplete because not needed at this time: we do not attempt to
* set used/lain for labels used by these functions:
* parser_lsearch_start( cbl_label_t *name,
* parser_lsearch_conditional(cbl_label_t * name)
* parser_lsearch_when( cbl_label_t *name, cbl_field_t *conditional )
* parser_lsearch_end( cbl_label_t *name )
* parser_bsearch_start( cbl_label_t* name,
* parser_bsearch_conditional( cbl_label_t* name )
* parser_bsearch_when(cbl_label_t* name,
* parser_bsearch_end( cbl_label_t* name )
* parser_string_overflow( cbl_label_t *name )
* parser_string_overflow_end( cbl_label_t *name )
* parser_call_exception( cbl_label_t *name )
* parser_call_exception_end( cbl_label_t *name )
* parser_entry_activate( size_t iprog, const cbl_label_t *declarative )
*/
class program_stack_t : protected std::stack<prog_descr_t> {
struct pending_t {
bool initial;
pending_t() : initial(false) {}
} pending;
public:
bool pending_initial() { return pending.initial = true; }
void push( prog_descr_t descr ) {
std::stack<prog_descr_t>& me(*this);
me.push(descr);
}
inline void pop() {
std::stack<prog_descr_t>& me(*this);
me.pop();
}
inline prog_descr_t& top() {
std::stack<prog_descr_t>& me(*this);
return me.top();
}
inline const prog_descr_t& top() const {
const std::stack<prog_descr_t>& me(*this);
return me.top();
}
inline size_t size() const {
const std::stack<prog_descr_t>& me(*this);
return me.size();
}
inline bool empty() const {
const std::stack<prog_descr_t>& me(*this);
return me.empty();
}
void apply_pending() {
if( pending.initial ) {
auto e = symbol_at(top().program_index);
auto prog(cbl_label_of(e));
prog->initial = pending.initial;
}
}
// cppcheck-suppress-begin useStlAlgorithm
cbl_label_t *first_declarative() {
auto eval = top().declaratives_eval;
if( eval ) return eval;
// scan stack container for declaratives
for( const auto& prog : c ) {
if( prog.declaratives_eval ) {
eval = prog.declaratives_eval;
break;
}
}
return eval;
}
// cppcheck-suppress-end useStlAlgorithm
};
struct rel_part_t {
cbl_refer_t *operand; // lhs
bool has_relop, invert;
relop_t relop;
rel_part_t()
: operand(nullptr),
has_relop(false),
invert(false),
relop(relop_t(-1))
{}
rel_part_t( cbl_refer_t *operand, relop_t relop, bool invert )
: operand(operand),
has_relop(relop != -1),
invert(invert),
relop(relop)
{}
rel_part_t& relop_set( relop_t op ) {
has_relop = true;
relop = op;
return *this;
}
bool is_value() const { return operand && is_elementary(operand->field->type); }
};
/*
* Evaluation of OR is deferred in case it's followed by AND. As each
* logical operand is encountered, it's first assigned to the
* "andable" member. As ANDs are encountered, they're ANDed to
* andable. When OR is first encountered, we've reached the end of a
* string of ANDs (possibly empty): we move andable to orable, and
* assign the rhs to andable (because it could be followed by AND).
* Successive ORs produce (orable = orable OR andable), followed by
* assigning the rhs to andable.
*
* At the end of the AND/OR evaluation, there is always an andable
* value, because that's where we began. If there is a orable, that
* indicates that the final OR remains unevaluated. In the resolve()
* method, we OR the two, and return that orable. If there's no
* orable, we simply return the andable.
*/
class log_expr_t {
cbl_field_t *orable, *andable;
public:
explicit log_expr_t( cbl_field_t *init ) : orable(NULL), andable(init) {
if( ! is_conditional(init) ) {
dbgmsg("%s:%d: logic error: %s is not a truth value",
__func__, __LINE__, name_of(init));
}
}
cbl_field_t * and_term() {
return andable;
}
log_expr_t * and_term( cbl_field_t *rhs ) {
if( ! is_conditional(rhs) ) {
dbgmsg("%s:%d: logic error: %s is not a truth value",
__func__, __LINE__, name_of(rhs));
} else {
parser_logop( andable, andable, and_op, rhs );
}
return this;
}
log_expr_t * or_term( cbl_field_t *rhs ) {
if( ! is_conditional(rhs) ) {
dbgmsg("%s:%d: logic error: %s is not a truth value",
__func__, __LINE__, name_of(rhs));
return this;
}
if( ! orable ) {
orable = andable;
} else {
parser_logop( orable, orable, or_op, andable );
}
andable = rhs;
return this;
}
cbl_field_t * resolve() {
assert(andable);
if( orable ) {
parser_logop( andable, orable, or_op, andable );
orable = NULL;
}
assert(!orable);
return andable; // leave in (initial) ANDable state
}
bool unresolved() const {
return orable != NULL;
}
};
static void ast_enter_section( cbl_label_t * );
static void ast_enter_paragraph( cbl_label_t * );
static class current_t {
friend cbl_options_t current_options();
cbl_options_t options_paragraph;
program_stack_t programs;
unique_typedefs_t typedefs;
std::set<function_descr_t> udfs;
int first_statement;
bool in_declaratives;
// from command line or early TURN
std::list<exception_turn_t> exception_turns;
error_labels_t error_labels;
static void declarative_execute( cbl_label_t *eval ) {
assert(eval);
auto iprog = symbol_elem_of(eval)->program;
if( iprog == current_program_index() ) {
parser_perform(eval);
} else {
parser_entry_activate( iprog, eval );
auto name = cbl_label_of(symbol_at(iprog))->name;
cbl_unimplemented("Global declarative %s for %s",
eval->name, name);
parser_call( new_literal(strlen(name), name, quoted_e),
cbl_refer_t(), 0, NULL, NULL, NULL, false );
}
}
rel_part_t antecedent_cache;
public:
current_t()
: first_statement(0)
, in_declaratives(false)
{}
bool option( cbl_options_t::arith_t option ) {
if( programs.size() == 1 ) {
options_paragraph.arith = option;
return true;
}
return false;
}
bool option_binary( cbl_options_t::float_endidanism_t option ) {
if( programs.size() == 1 ) {
options_paragraph.binary_endidanism = option;
return true;
}
return false;
}
bool option_decimal( cbl_options_t::float_endidanism_t option ) {
if( programs.size() == 1 ) {
options_paragraph.decimal_endidanism = option;
return true;
}
return false;
}
bool option( cbl_options_t::float_encoding_t option ) {
if( programs.size() == 1 ) {
options_paragraph.float_encoding = option;
return true;
}
return false;
}
bool default_round( cbl_round_t option ) {
if( programs.size() == 1 ) {
options_paragraph.default_round = option;
return true;
}
return false;
}
bool intermediate_round( cbl_round_t option ) {
if( programs.size() == 1 ) {
options_paragraph.intermediate_round = option;
return true;
}
return false;
}
template <typename T>
bool initial_option( cbl_section_type_t section, T value ) {
if( programs.size() == 1 ) {
switch( section ) {
case file_sect_e:
case linkage_sect_e:
break;
case working_sect_e:
options_paragraph.initial_value.working = value;
return true;
break;
case local_sect_e:
options_paragraph.initial_value.local = value;
return true;
break;
}
}
return false;
}
bool initial_value( cbl_section_type_t section, size_t isym ) {
return initial_option( section, isym );
}
cbl_enabled_exceptions_t enabled_exception_cache;
typedef std::list<cbl_declarative_t> declaratives_list_t;
class declaratives_t : protected declaratives_list_t {
struct file_exception_t {
ec_type_t type; uint32_t file;
file_exception_t() : type(ec_none_e), file(0) {}
file_exception_t(ec_type_t type, uint32_t file)
: type(type), file(file)
{}
bool operator<( const file_exception_t& that ) const {
if( type == that.type ) return file < that.file;
return type < that.type;
}
};
std::set<file_exception_t> file_exceptions;
public:
declaratives_t() {}
// current compiled data for enabled ECs and Declaratives, used by library.
struct runtime_t {
tree ena, dcl;
runtime_t() : ena(nullptr), dcl(nullptr) {}
} runtime;
bool empty() const {
return declaratives_list_t::empty();
}
inline const declaratives_list_t& as_list() const { return *this; }
bool add( const_reference declarative ) {
auto d = std::find_if( begin(), end(),
[sect = declarative.section]( const_reference decl ) {
return decl.section == sect;
} );
if( d != end() ) {
auto label = cbl_label_of(symbol_at(d->section));
yyerror("USE already defined for %s", label->name);
return false;
}
for( auto f = declarative.files;
f && f < declarative.files + declarative.nfile; f++ ) {
file_exception_t ex( declarative.type, *f );
auto result = file_exceptions.insert(ex);
if( ! result.second ) {
yyerror("%s defined twice for %s",
ec_type_str(declarative.type),
cbl_file_of(symbol_at(*f))->name);
return false;
}
}
declaratives_list_t::push_back(declarative);
return true;
}
// cppcheck-suppress-begin useStlAlgorithm
uint32_t status() const {
uint32_t status_word = 0;
for( auto dcl : *this ) {
status_word |= (EC_ALL_E & dcl.type );
}
return status_word;
}
// cppcheck-suppress-end useStlAlgorithm
bool has_format_1() const {
return std::any_of( begin(), end(),
[]( const cbl_declarative_t& dcl ) {
return dcl.is_format_1();
} );
}
std::vector<uint64_t>
encode() const {
std::vector<uint64_t> encoded;
auto p = std::back_inserter(encoded);
for( const auto& dcl : *this ) {
*p++ = dcl.section;
*p++ = dcl.global;
*p++ = dcl.type;
*p++ = dcl.nfile;
p = std::copy(dcl.files, std::end(dcl.files), p);
*p++ = dcl.mode;
}
return encoded;
}
} declaratives;
void exception_add( ec_type_t ec, bool enabled = true) {
exception_turns.push_back(exception_turn_t(ec, enabled));
}
std::list<exception_turn_t>& pending_exceptions() {
return exception_turns;
}
bool typedef_add( const cbl_field_t *field ) {
auto result = typedefs.insert(field);
return result.second;
}
const cbl_field_t * has_typedef( const cbl_field_t *field ) {
auto found = typedefs.find(field);
return found == typedefs.end()? NULL : *found;
}
void udf_add( size_t isym ) {
auto udf = function_descr_t::init(isym);
auto p = udfs.insert(udf);
assert(p.second);
}
const function_descr_t * udf_in( const char name[] ) {
auto udf = function_descr_t::init(name);
auto p = udfs.find(udf);
const function_descr_t *output = NULL;
if( p != udfs.end() ) output = &*p;
return output;
}
void udf_update( const ffi_args_t *ffi_args );
bool udf_args_valid( const cbl_label_t *func,
const std::list<cbl_refer_t>& args,
std::vector<function_descr_arg_t>& params /*out*/ );
void udf_dump() const {
if( yydebug ) {
int i=0;
for( auto udf : udfs ) {
dbgmsg("%4d %-30s %-30s", i++, keyword_str(udf.token), udf.name);
}
}
}
void repository_add_all();
bool repository_add( const char name[] );
int repository_in( const char name[] );
bool repository_add( size_t isym ) {
auto udf = function_descr_t::init(isym);
auto p = udfs.find(udf); // previously defined functions in "udfs"
assert(p != udfs.end()); // If it's a symbol, it must be in udfs.
auto result = programs.top().function_repository.insert(*p);
if( yydebug ) {
for( auto descr : programs.top().function_repository ) {
dbgmsg("%s:%d: %-20s %-20s %-20s", __func__, __LINE__,
keyword_str(descr.token), descr.name, descr.cname);
}
}
return result.second;
}
size_t declarative_section() const {
return symbol_index(symbol_elem_of(programs.top().section));
}
const char * declarative_section_name() const {
return in_declaratives? programs.top().section->name : NULL;
}
std::list<std::string>& debugging_declaratives(bool all) const {
const char *para = programs.top().paragraph->name;
auto client = debugging_clients.find(all? ":all:" : para);
if( client == debugging_clients.end() ) {
static std::list<std::string> empty;
return empty;
}
return client->second;
}
bool
collating_sequence( const cbl_name_t name ) {
assert(name);
assert(!programs.empty());
prog_descr_t& program = programs.top();
if( program.collating_sequence ) return false; // already defined
program.collating_sequence = name;
return true;
}
const char *
collating_sequence() const {
assert(!programs.empty());
return programs.top().collating_sequence;
}
cbl_round_t rounded_mode() const { return programs.top().options.default_round; }
cbl_round_t rounded_mode( cbl_round_t mode ) {
return programs.top().options.default_round = mode;
}
const char *
locale() {
return programs.empty()? NULL : programs.top().locale.os_name;
}
const char *
locale( const cbl_name_t name ) {
if( programs.empty() ) return NULL;
const prog_descr_t::locale_t& locale = programs.top().locale;
return 0 == strcmp(name, locale.name)? locale.name : NULL;
}
const prog_descr_t::locale_t&
locale( const cbl_name_t name, const char os_name[] ) {
if( programs.empty() ) {
static prog_descr_t::locale_t empty;
return empty;
}
return programs.top().locale = prog_descr_t::locale_t(name, os_name);
}
bool new_program ( const YYLTYPE& loc, cbl_label_type_t type,
const char name[], const char os_name[],
bool common, bool initial )
{
size_t parent = programs.empty()? 0 : programs.top().program_index;
cbl_label_t label = {};
label.type = type;
label.parent = parent;
label.line = yylineno;
label.common = common;
label.initial = initial;
label.os_name = os_name;
if( !namcpy(loc, label.name, name) ) { gcc_unreachable(); }
const cbl_label_t *L;
if( (L = symbol_program_add(parent, &label)) == NULL ) return false;
programs.push( prog_descr_t(symbol_index(symbol_elem_of(L))) );
programs.apply_pending();
bool fOK = symbol_at(programs.top().program_index) + 1 == symbols_end();
assert(fOK);
if( (L = symbol_program_local(name)) != NULL ) {
error_msg(loc, "program '%s' already defined on line %d",
L->name, L->line);
return false;
}
options_paragraph = cbl_options_t();
first_statement = 0;
return fOK;
}
void program_needs_initial() { programs.pending_initial(); }
size_t program_index(void) const {
assert(!programs.empty());
return programs.top().program_index;
}
const cbl_label_t * program(void) {
return programs.empty()?
NULL : cbl_label_of(symbol_at(programs.top().program_index));
}
cbl_label_t * section(void) {
return programs.empty()? NULL : programs.top().section;
}
cbl_label_t * paragraph(void) {
return programs.empty()? NULL : programs.top().paragraph;
}
bool is_first_statement( const YYLTYPE& loc ) {
if( ! in_declaratives && first_statement == 0 ) {
auto eval = programs.top().declaratives_eval;
if( eval ) {
size_t ilabel = symbol_index(symbol_elem_of(eval));
if( ! symbol_label_section_exists(ilabel) ) {
if( ! dialect_ibm() ) {
error_msg(loc,
"Per ISO a program with DECLARATIVES must begin with a SECTION, "
"requires %<-dialect ibm%>");
}
}
}
first_statement = loc.first_line;
return true;
}
return false;
}
/*
* At the end of each program, ensure there are no uses of an ambiguous
* procedure (SECTION or PARAGRAPH) name. At the end of a top-level program,
* adjust any CALL targets to use the mangled name of the internal (contained
* or COMMON ) program. We ensure there are no duplicate program names, per
* ISO, in new_program.
*/
std::set<std::string> end_program() {
cbl_enabled_exceptions_t& enabled_exceptions( cdf_enabled_exceptions() );
if( enabled_exceptions.size() ) {
declaratives_evaluate();
}
assert(!programs.empty());
const procref_t *ref = ambiguous_reference(program_index());
std::set<std::string> externals = programs.top().external_targets();
/*
* For each called local program, replace the original undecorated
* target with the mangled name.
*
* At END-PROGRAM for the top-level program, we know all
* subprograms, and whether or not they are COMMON. PROGRAM may be
* the caller, or a subprogram could call COMMON sibling.
*/
static std::unordered_set<size_t> callers_we_have_seen;
if( programs.size() == 1 ) {
if( yydebug ) parser_call_targets_dump();
for( size_t caller : symbol_program_programs() ) {
// We are running through the entire growing list of called programs
// at the point of each END PROGRAM. This confuses the name changing
// routines, so we use a std::set to avoid doing callers more than
// once.
if( callers_we_have_seen.find(caller) != callers_we_have_seen.end() )
{
continue;
}
const char *caller_name = cbl_label_of(symbol_at(caller))->name;
for( auto callable : symbol_program_callables(caller) ) {
auto called = cbl_label_of(symbol_at(callable));
auto mangled_name =
called->mangled_name? called->mangled_name : called->name;
size_t n =
parser_call_target_update(caller,
called->name,
mangled_name);
// Zero is not an error
dbgmsg("updated " HOST_SIZE_T_PRINT_UNSIGNED
" calls from #%-3" GCC_PRISZ "u (%s) s/%s/%s/",
(fmt_size_t)n, (fmt_size_t)caller, caller_name,
called->name, mangled_name);
}
callers_we_have_seen.insert(caller);
}
if( yydebug ) parser_call_targets_dump();
}
parser_leave_paragraph( programs.top().paragraph );
parser_leave_section( programs.top().section );
programs.pop();
debugging_clients.clear();
error_clients.clear();
exception_clients.clear();
if( ref ) {
yywarn("could not resolve paragraph (or section) '%s' at line %d",
ref->paragraph(), ref->line_number());
// add string to indicate ambiguity error
externals.insert(":ambiguous:");
}
return externals;
}
size_t program_level() const { return programs.size(); }
size_t program_section() const {
if( programs.empty() || programs.top().section == NULL ) return 0;
auto section = programs.top().section;
return symbol_index(symbol_elem_of(section));
}
cbl_label_t * doing_declaratives( bool begin ) {
if( begin ) {
in_declaratives = true;
return NULL;
}
assert( !begin );
in_declaratives = false;
if( declaratives.empty() ) return NULL;
assert(!declaratives.empty());
declaratives.runtime.dcl = parser_compile_dcls(declaratives.encode());
// Create section to evaluate declaratives. Given them unique names so
// that we can figure out what is going on in a trace or looking at the
// assembly language.
static int eval_count = 1;
char eval[32], lave[32];
sprintf(eval, "_DECLARATIVES_EVAL%d", eval_count);
sprintf(lave, "_DECLARATIVES_LAVE%d", eval_count++);
struct cbl_label_t*& eval_label = programs.top().declaratives_eval;
eval_label = label_add(LblSection, eval, yylineno);
struct cbl_label_t * lave_label = label_add(LblSection, lave, yylineno);
ast_enter_section(eval_label);
declarative_runtime_match(declaratives.as_list(), lave_label);
parser_label_label(lave_label);
return lave_label;
}
cbl_label_t * new_section( cbl_label_t * section ) {
std::swap( programs.top().section, section );
return section;
}
ec_type_t ec_type_of( file_status_t status ) {
static std::vector<ec_type_t> ec_by_status {
/* 0 */ ec_none_e, // ec_io_warning_e if low byte is nonzero
/* 1 */ ec_io_at_end_e,
/* 2 */ ec_io_invalid_key_e,
/* 3 */ ec_io_permanent_error_e,
/* 4 */ ec_io_logic_error_e,
/* 5 */ ec_io_record_operation_e,
/* 6 */ ec_io_file_sharing_e,
/* 7 */ ec_io_record_content_e,
/* 8 */ ec_io_imp_e, // unused, not defined by ISO
/* 9 */ ec_io_imp_e,
};
int status10 = static_cast<unsigned int>(status) / 10;
gcc_assert(ec_by_status.size() == 10);
gcc_assert(0 <= status10 && status10 < 10 && status10 != 8);
return ec_by_status[status10];
}
/*
* END DECLARATIVES causes:
* 1. Create section _DECLARATIVES_EVAL
* and exit label _DECLARATIVES_LAVE
* 2. declarative_runtime_match generates runtime evaluation "ladder".
* 3. After a declarative is executed, control branches to the exit label.
*
* After each verb, we call declaratives_evaluate,
* which PERFORMs _DECLARATIVES_EVAL.
*
* If the matched declarative is defined by a superior program as
* GLOBAL, it cannot be PERFORMed. Instead, it is CALLed with an
* alternative entry point (TODO).
*/
void
declaratives_evaluate( cbl_file_t *file ) {
gcc_assert(file);
parser_file_stash(file);
cbl_label_t *eval = programs.first_declarative();
if( eval ) {
auto iprog = symbol_elem_of(eval)->program;
if( iprog == current_program_index() ) {
parser_perform(eval);
} else {
parser_entry_activate( iprog, eval );
auto name = cbl_label_of(symbol_at(iprog))->name;
parser_call( new_literal(strlen(name), name, quoted_e),
cbl_refer_t(), 0, NULL, NULL, NULL, false );
}
}
}
void
declaratives_evaluate( std::list<cbl_file_t*>& files ) {
for( auto& file : files ) {
declaratives_evaluate(file);
}
}
/*
* To indicate to the runtime-match function that we want to evaluate
* only the exception condition, unrelated to a file, we set the
* file register to 0 and the handled-exception register to the
* handled exception condition.
*
* declaratives_execute performs the "declarative ladder" produced
* by declaratives_runtime_match. That section CALLs the
* runtime-match procedure __gg__match_exception, passing it the
* values of those two registers. When that function sees there's
* no file involved, it interprets the "handled" parameter as
* ec_type_t, and returns the matching declarative symbol-table
* index, per usual.
*/
void
declaratives_evaluate() {
cbl_label_t *eval = programs.first_declarative();
if( eval ) declarative_execute(eval);
}
cbl_label_t * new_paragraph( cbl_label_t *para ) {
auto& prog( programs.top() );
auto old(prog.paragraph);
prog.paragraph = para;
return old;
}
void antecedent_dump() const {
if( ! yydebug ) return;
if( ! antecedent_cache.operand ) {
yywarn( "Antecedent: none" );
} else {
yywarn( "Antecedent: %c %s %s %c",
antecedent_cache.invert? '!':' ',
name_of(antecedent_cache.operand->field),
relop_str(antecedent_cache.relop),
antecedent_cache.has_relop? 'T' : 'F' );
}
}
void antecedent( const rel_part_t& ante ) { antecedent_cache = ante; antecedent_dump(); }
void antecedent_reset() { antecedent_cache = rel_part_t(); antecedent_dump(); }
rel_part_t& antecedent() { return antecedent_cache; }
rel_part_t& antecedent( relop_t op ) {
antecedent_cache.relop_set(op);
antecedent_dump();
return antecedent_cache;
}
rel_part_t& antecedent_invert( bool invert=true ) {
antecedent_cache.invert = invert;
antecedent_dump();
return antecedent_cache;
}
void compute_begin() { error_labels.generate(); }
bool in_compute() { return error_labels.on_error != NULL; }
void compute_end() { error_labels.clear(); }
cbl_label_t * compute_on_error() { return error_labels.on_error; }
cbl_label_t * compute_not_error() { return error_labels.not_error; }
cbl_label_t * compute_label() { return error_labels.compute_error; }
} current;
void current_enabled_ecs( tree ena ) {
current.declaratives.runtime.ena = ena;
}
#define PROGRAM current.program_index()
static void
add_debugging_declarative( const cbl_label_t * label ) {
// cppcheck-suppress [unreadVariable] obviously not true
const char *section = current.declarative_section_name();
if( section ) {
debugging_clients[label->name].push_back(section);
}
}
cbl_options_t current_options() {
return current.options_paragraph;
}
size_t current_program_index() {
return current.program()? current.program_index() : 0;
}
cbl_label_t * current_section() {
return current.section();
}
cbl_label_t * current_paragraph() {
return current.paragraph();
}
const char *
current_declarative_section_name() {
return current.declarative_section_name();
}
void
add_cobol_exception( ec_type_t type, bool enabled ) {
current.exception_add( type, enabled );
}
static cbl_round_t rounded_of( int token );
cbl_round_t
current_rounded_mode() {
return current.rounded_mode();
}
#if needed
static cbl_round_t
current_rounded_mode( cbl_round_t rounded) {
return current.rounded_mode(rounded);
}
#endif
static cbl_round_t current_rounded_mode( int token );
size_t program_level() { return current.program_level(); }
static size_t constant_index( int token );
static relop_t relop_of(int);
static relop_t relop_invert(relop_t op);
static enum classify_t classify_of( int token );
static void subscript_dimension_error( YYLTYPE loc, size_t, const cbl_refer_t *name );
/*
* Utility functions
*/
char *
normalize_picture( char picture[] );
static inline cbl_field_t *
new_tempnumeric(const cbl_name_t name = nullptr) {
return new_temporary(FldNumericBin5, name);
}
static inline cbl_field_t *
new_tempnumeric_float(const cbl_name_t name = nullptr) {
return new_temporary(FldFloat, name);
}
uint32_t
type_capacity( enum cbl_field_type_t type, uint32_t digits );
bool
valid_picture( enum cbl_field_type_t type, const char picture[] );
bool
move_corresponding( cbl_refer_t& tgt, cbl_refer_t& src );
static bool
literal_subscripts_valid( YYLTYPE loc, const cbl_refer_t& name );
static bool
literal_refmod_valid( YYLTYPE loc, const cbl_refer_t& r );
static bool
is_integer_literal( const cbl_field_t *field ) {
if( field->type == FldLiteralN ) {
const char *initial = field->data.initial;
switch( *initial ) {
case '-': case '+': ++initial;
}
const char *eos = initial + strlen(initial);
auto p = std::find_if_not( initial, eos, fisdigit );
if( p == eos ) return true;
if( *p++ == symbol_decimal_point() ) {
switch( *p++ ) {
case 'E': case 'e':
switch( *p++ ) {
case '+': case '-':
return std::all_of(p, eos, []( char ch ) { return ch == '0'; } );
break;
}
}
}
}
return false;
}
static inline bool
is_string_literal( const cbl_field_t *field ) {
return is_literal(field) && is_quoted(field);
}
static inline bool
needs_picture( cbl_field_type_t type ) {
switch(type) {
case FldDisplay:
case FldInvalid:
gcc_unreachable();
return false; // not a valid question
case FldAlphaEdited:
case FldAlphanumeric:
case FldNumericBinary:
case FldNumericDisplay:
case FldNumericEdited:
case FldPacked:
return true;
case FldFloat:
case FldNumericBin5:
return false;
case FldBlob:
case FldClass:
case FldConditional:
case FldForward:
case FldGroup:
case FldIndex:
case FldLiteralA:
case FldLiteralN:
case FldPointer:
case FldSwitch:
return false;
}
dbgmsg("%s:%d: unknown cbl_field_type_t %u", __func__, __LINE__, type);
gcc_unreachable();
return false;
}
static bool
is_callable( const cbl_field_t *field ) {
switch ( field->type ) {
case FldInvalid:
case FldNumericEdited:
case FldAlphaEdited:
case FldClass:
case FldConditional:
case FldForward:
case FldSwitch:
case FldDisplay:
case FldBlob:
case FldNumericDisplay:
case FldNumericBinary:
case FldFloat:
case FldPacked:
case FldNumericBin5:
case FldLiteralN:
case FldIndex:
return false;
case FldGroup:
case FldLiteralA:
case FldAlphanumeric:
case FldPointer:
return true;
}
cbl_internal_error( "%s:%d: invalid %<symbol_type_t%> %d",
__func__, __LINE__, field->type );
return false;
}
/*
* intrinsic calls
*/
struct cbl_fieldloc_t {
YYLTYPE loc;
cbl_field_t *field;
cbl_fieldloc_t() : loc{ 1,1, 1,1 }, field(NULL) {}
cbl_fieldloc_t( const YYLTYPE& loc, cbl_field_t *field )
: loc(loc), field(field)
{}
};
static size_t
intrinsic_invalid_parameter( int token, const std::vector<cbl_refer_t>& args );
static const char *
intrinsic_cname( int token );
static bool
intrinsic_call_0( cbl_field_t *output, int token ) {
const char *name = intrinsic_cname(token);
if( !name ) return false;
parser_intrinsic_call_0( output, name );
return true;
}
static bool
intrinsic_call_1( cbl_field_t *output, int token,
cbl_refer_t *r1, const YYLTYPE& loc ) {
std::vector<cbl_refer_t> args { *r1 };
if( 0 == intrinsic_invalid_parameter(token, args) ) {
error_msg(loc, "invalid parameter '%s'", r1->field->name);
return false;
}
const char *func = intrinsic_cname(token);
if( !func ) return false;
parser_intrinsic_call_1( output, func, *r1 );
return true;
}
static bool
intrinsic_call_2( cbl_field_t *tgt, int token, const cbl_refer_t *r1, cbl_refer_t *r2 ) {
std::vector<cbl_refer_t> args { *r1, r2? *r2 : cbl_refer_t() };
size_t n = intrinsic_invalid_parameter(token, args);
if( n < args.size() ) {
error_msg(args[n].loc, "invalid parameter '%s'", args[n].field->name);
return false;
}
const char *fund = intrinsic_cname(token);
if( !fund ) return false;
parser_intrinsic_call_2( tgt, fund, args[0], args[1] );
return true;
}
static bool
intrinsic_call_3( cbl_field_t *tgt, int token,
cbl_refer_t *r1, cbl_refer_t *r2, cbl_refer_t *r3 ) {
std::vector<cbl_refer_t> args { *r1, *r2, *r3 };
size_t n = intrinsic_invalid_parameter(token, args);
if( n < args.size() ) {
error_msg(args[n].loc, "invalid parameter '%s'", args[n].field->name);
return false;
}
const char *func = intrinsic_cname(token);
if( !func ) return false;
parser_intrinsic_call_3( tgt, func, *r1, *r2, *r3 );
return true;
}
static bool
intrinsic_call_4( cbl_field_t *tgt, int token,
cbl_refer_t *r1, cbl_refer_t *r2,
cbl_refer_t *r3, cbl_refer_t *r4 ) {
std::vector<cbl_refer_t> args { *r1, *r2, *r3, *r4 };
size_t n = intrinsic_invalid_parameter(token, args);
if( n < args.size() ) {
error_msg(args[n].loc, "invalid parameter '%s'", args[n].field->name);
return false;
}
const char *func = intrinsic_cname(token);
if( !func ) return false;
parser_intrinsic_call_4( tgt, func, *r1, *r2, *r3, *r4 );
return true;
}
/*
* Local functions
*/
static inline cbl_field_t *
new_literal( const char initial[] ) {
return new_literal( strlen(initial), initial );
}
cbl_refer_t *
negate( cbl_refer_t * refer, bool neg = true ) {
if( ! neg ) return refer;
assert( is_numeric(refer->field) );
auto output = new_reference(new_tempnumeric());
parser_subtract( *output, literally_zero, *refer, current_rounded_mode() );
return output;
}
cbl_field_t *
conditional_set( cbl_field_t *tgt, bool tf ) {
static cbl_field_t *one = new_literal("1");
enum relop_t op = tf? eq_op : ne_op;
parser_relop( tgt, one, op, one );
return tgt;
}
static inline cbl_field_t *
table_primary_index( cbl_field_t *table ) {
assert(table);
return 0 == table->occurs.indexes.nfield?
NULL : cbl_field_of(symbol_at(table->occurs.indexes.fields[0]));
}
static inline const cbl_refer_t // return copy, not element reference
invalid_key( const cbl_refer_t& ref ) {
assert(ref.field);
auto p = std::find_if( ref.subscripts.begin(), ref.subscripts.end(),
[parent = ref.field->parent]( const auto &sub ) {
return sub.field->parent == parent;
} );
return p != ref.subscripts.end() ? *p : nullptr;
}
static inline symbol_elem_t *
symbol_find( const std::list<const char *>& names ) {
auto found = symbol_find(PROGRAM, names);
if( found.first && !found.second ) {
auto field = cbl_field_of(found.first);
yyerror( "%s is not unique, first defined on line %d",
field->name, field->line );
return NULL;
}
return found.first;
}
static inline cbl_field_t *
field_find( const std::list<const char *>& names ) {
if( names.size() == 1 ) {
auto value = cdf_value(names.front());
if( value ) {
cbl_field_t * field;
if( value->is_numeric() ) {
field = new_tempnumeric();
parser_set_numeric(field, value->as_number());
} else {
field = new_literal(value->string);
}
return field;
}
}
symbol_elem_t *e = symbol_find(names);
return e? cbl_field_of(e) : NULL;
}
static inline symbol_elem_t *
symbol_find( const YYLTYPE& loc, const char *name ) {
cbl_namelist_t names;
if( ! name_queue.empty() ) {
auto names = name_queue.pop_as_names();
}
names.push_front(name);
auto found = symbol_find( PROGRAM, names );
if( found.first && !found.second ) {
auto field = cbl_field_of(found.first);
error_msg(loc, "'%s' is not unique, first defined on line %d",
field->name, field->line);
return NULL;
}
return found.first;
}
static inline cbl_field_t *
register_find( const char *name ) {
return cbl_field_of(symbol_register(name));
}
static bool
valid_redefine( const YYLTYPE& loc,
const cbl_field_t *field, const cbl_field_t *orig ) {
// Must have same level.
if( field->level != orig->level ) {
error_msg(loc, "cannot redefine %s %s as %s %s "
"because they have different levels",
orig->level_str(), orig->name,
field->level_str(), field->name);
return false;
}
// no higher level intervenes
/*
* No entry having a level-number numerically lower than the
* level-number of data-name-2 may occur between the data
* description entries of data-name-2 and the subject of the entry.
*/
struct { symbol_elem_t *field, *orig; } sym = {
symbol_at(field_index(field)),
symbol_at(field_index(orig)) };
auto e = std::find_if( sym.orig + 1, sym.field,
[lowest = field->level]( auto& elem ) {
if( elem.type != SymField ) return false;
auto f = cbl_field_of(&elem);
return 0 < f->level && f->level < lowest;
} );
if( e != sym.field ) {
auto wrong = cbl_field_of(e);
error_msg(loc, "%s %s on line %d lies between %s and %s",
wrong->level_str(), wrong->name, wrong->line,
orig->name, field->name);
return false;
}
// cannot redefine a table
if( orig->occurs.ntimes() ) {
error_msg(loc, "cannot redefine table %s %s",
orig->level_str(), orig->name);
return false;
}
// redefined field cannot be ODO
if( orig->occurs.depending_on ) {
error_msg(loc, "redefined data item %s %s has OCCURS DEPENDING ON",
orig->level_str(), orig->name);
return false;
}
// redefiner cannot have ODO
if( field->occurs.depending_on ) {
error_msg(loc, "data item %s %s cannot use REDEFINES and OCCURS DEPENDING ON",
field->level_str(), field->name);
return false;
}
if( is_variable_length(orig) ) {
error_msg(loc, "redefined data item %s %s has OCCURS DEPENDING ON",
orig->level_str(), orig->name);
return false;
}
// We don't know about the redefining group until it's completely defined.
/*
* 8) The storage area required for the subject of the entry
* shall not be larger than the storage area required for the
* data item referenced by data-name-2, unless the data item
* referenced by data- name-2 has been specified with level
* number 1 and without the EXTERNAL clause.
*/
if( field->type != FldGroup && orig->type != FldGroup ) {
if( orig->size() < field->size() ) {
if( orig->level > 1 || orig->has_attr(external_e) ) {
dbgmsg( "size error orig: %s", field_str(orig) );
dbgmsg( "size error redef: %s", field_str(field) );
error_msg(loc, "%s (%s size %u) larger than REDEFINES %s (%s size %u)",
field->name,
3 + cbl_field_type_str(field->type), field->size(),
orig->name,
3 + cbl_field_type_str(orig->type), orig->size() );
}
}
}
/*
* 4) No entry having a level-number numerically lower than the
* level-number of data-name-2 may occur between the data
* description entries of data-name-2 and the subject of the entry.
*/
bool same_group = std::none_of( symbol_at(field_index(orig)),
symbol_at(field_index(field)),
[level = field->level]( const auto& elem ) {
if( elem.type == SymField ) {
auto f = cbl_field_of(&elem);
return 0 < f->level && f->level < level;
}
return false;
} );
if( ! same_group ) {
error_msg(loc, "cannot redefine %s %s as %s %s "
"because they belong to different groups",
orig->level_str(), orig->name,
field->level_str(), field->name);
return false;
}
return true;
}
static void
field_value_all(struct cbl_field_t * field ) {
// Expand initial by repeating its contents until it is of length capacity:
assert(field->data.initial != NULL);
size_t initial_length = strlen(field->data.initial);
char *new_initial = static_cast<char*>(xmalloc(field->data.capacity + 1));
size_t i = 0;
while(i < field->data.capacity) {
new_initial[i] = field->data.initial[i%initial_length];
i += 1;
}
new_initial[field->data.capacity] = '\0';
free(const_cast<char *>(field->data.initial));
field->data.initial = new_initial;
}
static cbl_field_t *
parent_has_value( cbl_field_t *field ) {
while( (field = parent_of(field)) != NULL ) {
if( field->data.initial ) break;
}
return field;
}
static uint32_t
group_attr( const cbl_field_t * field ) {
if( field->parent == 0 ) return 0;
const symbol_elem_t *e = symbol_at(field->parent);
if( SymField != e->type ) return 0;
const cbl_field_t *p = cbl_field_of(e);
if( p->type != FldGroup ) return 0;
return p->attr;
}
static struct cbl_field_t *
field_add( const YYLTYPE& loc, cbl_field_t *field ) {
switch(current_data_section) {
case not_data_datasect_e:
case file_datasect_e:
case working_storage_datasect_e:
break;
case local_storage_datasect_e:
field->attr |= local_e;
break;
case linkage_datasect_e:
field->attr |= linkage_e;
break;
}
// Use isym 0 to indicate the location of the field under construction.
symbol_field_location(0, loc);
struct symbol_elem_t *e = symbol_field_add(PROGRAM, field);
if( !e ) return NULL;
symbol_field_location(symbol_index(e), loc);
field = cbl_field_of(e);
assert(field->type != FldDisplay);
if( field->parent == 0 ) {
switch(field->level) {
case 0: case 1: case 77: case 78:
break;
default:
error_msg(loc, "%s %s is not part of an 01 record",
field->level_str(), field->name );
return NULL;
break;
}
}
return field;
}
static const char *
field_attr_str( const cbl_field_t *field ) {
static const std::vector<cbl_field_attr_t> attrs {
figconst_1_e, figconst_2_e, figconst_4_e, rjust_e, ljust_e,
zeros_e, signable_e, constant_e, function_e, quoted_e, filler_e,
intermediate_e, embiggened_e, all_alpha_e, all_x_e,
all_ax_e, prog_ptr_e, scaled_e, refmod_e, based_e, any_length_e,
global_e, external_e, blank_zero_e, linkage_e, local_e, leading_e,
separate_e, envar_e, dnu_1_e, bool_encoded_e, hex_encoded_e,
depends_on_e, initialized_e, has_value_e, ieeedec_e, big_endian_e,
same_as_e, record_key_e, typedef_e, strongdef_e,
};
return field->attr_str(attrs);
}
static bool
uniform_picture( const char *picture, char model ) {
const char *eopicture( picture + strlen(picture) );
model = TOLOWER(model);
return std::all_of(picture, eopicture,
[model]( char ch ) {
return model == TOLOWER(ch);
} );
}
static enum cbl_field_attr_t
uniform_picture( const char *picture ) {
static char ch[] = { 'A', 'X' };
for( auto p = ch; p < ch + sizeof(ch); p++ ) {
if( uniform_picture(picture, *p) ) {
switch(*p) {
case 'A': return all_alpha_e;
case 'X': return all_x_e;
}
}
}
return none_e;
}
static bool
field_type_update( cbl_field_t *field, cbl_field_type_t type,
YYLTYPE loc,
bool is_usage = false)
{
// preserve NumericEdited if already established
if( !is_usage && field->has_attr(blank_zero_e) ) {
if( type == FldNumericDisplay && field->type == FldNumericEdited ) {
return true;
}
}
// disallow USAGE if inherited from parent (all members must be of same type)
if( is_usage && field->usage != type ) {
switch( field->usage ) {
case FldInvalid:
case FldDisplay:
break; // ok
default:
error_msg(loc, "cannot set %s to USAGE %s "
"because the group is restricted to USAGE %s",
field->name, cbl_field_type_str(type),
cbl_field_type_str(field->usage));
return false;
}
}
if( ! symbol_field_type_update(field, type, is_usage) ) {
error_msg(loc, "cannot set USAGE of %s to %s (from %s)", field->name,
cbl_field_type_str(type) + 3, cbl_field_type_str(field->type) + 3);
return false;
}
dbgmsg( "%s:%d: %s became %s based on %s", __func__, __LINE__, field->name,
cbl_field_type_str(field->type), cbl_field_type_str(type) );
return true;
}
static bool
field_capacity_error( const YYLTYPE& loc, const cbl_field_t *field ) {
uint32_t parent_capacity = 0;
if( field->parent ) {
auto e = symbol_at(field->parent);
if( e->type == SymField ) parent_capacity = cbl_field_of(e)->data.capacity;
}
/*
* Field may become a table whose capacity was inherited from a parent with
* data. If so, the field's capacity will be overwritten by its
* PICTURE-defined size.
*/
if( parent_capacity < field->data.capacity && !symbol_redefines(field) ) {
dbgmsg( "%s: %s", __func__, field_str(field) );
error_msg(loc, "%s has USAGE incompatible with PICTURE",
field->name );
return true;
}
return false;
}
#define ERROR_IF_CAPACITY(L, F) \
do { if( field_capacity_error(L, F) ) YYERROR; } while(0)
static const char *
blank_pad_initial( const char initial[], size_t capacity, size_t new_size ) {
assert(capacity < new_size);
assert(initial != NULL);
if( normal_value_e != cbl_figconst_of(initial) ) return initial;
auto p = reinterpret_cast<char *>( xmalloc(2 + new_size) );
memset(p, 0x20, new_size);
memcpy(p, initial, capacity);
p[new_size] = '\0'; // for debugging
p[++new_size] = '\0'; // for debugging
return p;
}
static bool
value_encoding_check( const YYLTYPE& loc, cbl_field_t *field ) {
if( ! field->internalize() ) {
error_msg(loc, "inconsistent string literal encoding for '%s'",
field->data.initial);
return false;
}
return true;
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
static struct cbl_field_t *
field_alloc( const YYLTYPE& loc, cbl_field_type_t type, size_t parent, const char name[] ) {
cbl_field_t *f, field = {};
field.type = type;
field.usage = FldInvalid;
field.parent = parent;
field.line = yylineno;
if( !namcpy(loc, field.name, name) ) return NULL;
f = field_add(loc, &field);
assert(f);
return f;
}
static const cbl_file_t protofile;
// Add a file to the symbol table with its record area field.
// The default organization is sequential.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-truncation"
static cbl_file_t *
file_add( YYLTYPE loc, cbl_file_t *file ) {
gcc_assert(file);
enum { level = 1 };
struct cbl_field_t area = { 0, FldAlphanumeric, FldInvalid, 0, 0,0, level, {}, yylineno },
*field = field_add(loc, &area);
file->default_record = field_index(field);
// install file, and set record area's name
auto e = symbol_file_add(PROGRAM, file);
if( !e ) {
error_msg(loc, "%s was defined previously on line %d", file->name, file->line);
return NULL;
}
file = cbl_file_of(e);
snprintf(field->name, sizeof(field->name),
"%s" HOST_SIZE_T_PRINT_UNSIGNED "_%s",
record_area_name_stem, (fmt_size_t)symbol_index(e), file->name);
if( file->attr & external_e ) {
snprintf(field->name, sizeof(field->name),
"%s%s", record_area_name_stem, file->name);
}
field->file = field->parent = symbol_index(e);
return file;
}
#pragma GCC diagnostic pop
#pragma GCC diagnostic pop
static cbl_alphabet_t *
alphabet_add( const YYLTYPE& loc, cbl_encoding_t encoding ) {
cbl_alphabet_t alphabet(loc, encoding);
symbol_elem_t *e = symbol_alphabet_add(PROGRAM, &alphabet);
assert(e);
return cbl_alphabet_of(e);
}
// The current field always exists in the symbol table, even if it's incomplete.
static cbl_field_t *
current_field(cbl_field_t * field = NULL) {
static cbl_field_t *local;
if( field ) local = field;
gcc_assert(field_index(local));
return local;
}
static void
set_real_from_capacity( const YYLTYPE& loc,
cbl_field_t *field,
REAL_VALUE_TYPE *r ) {
if( field == current_field() ) {
error_msg(loc, "cannot define %s via self-reference", field->name);
return;
}
field->data.set_real_from_capacity(r);
}
static struct cbl_special_name_t *
special_of( const char F[], int L, const char name[] ) {
struct symbol_elem_t *e = symbol_special(PROGRAM, name);
if( !e ) {
dbgmsg("%s:%d: no special symbol '%s' found", F, L, name);
return NULL;
}
return cbl_special_name_of(e);
}
#define special_of( F ) special_of(__func__, __LINE__, (F))
static const special_name_t *
cmd_or_env_special_of( std::string name ) {
static const std::map< std::string, special_name_t > fujitsus
{ // Fujitsu calls these "function names", not device names
{ "ARGUMENT-NUMBER", ARG_NUM_e },
{ "ARGUMENT-VALUE", ARG_VALUE_e } ,
{ "ENVIRONMENT-NAME", ENV_NAME_e },
{ "ENVIRONMENT-VALUE", ENV_VALUE_e },
};
std::transform(name.begin(), name.end(), name.begin(), ::toupper);
auto p = fujitsus.find(name.c_str());
return p != fujitsus.end()? &p->second : nullptr;
}
static inline void
parser_add2( const cbl_num_result_t& to,
const cbl_refer_t& from ) {
parser_add(to.refer, to.refer, from, to.rounded);
}
static inline void
parser_subtract2( const cbl_num_result_t& to,
const cbl_refer_t& from ) {
parser_subtract(to.refer, to.refer, from, to.rounded);
}
static bool
parser_move_carefully( const char */*F*/, int /*L*/,
tgt_list_t *tgt_list,
const cbl_refer_t& src,
bool is_index )
{
for( const auto& num_result : tgt_list->targets ) {
const cbl_refer_t& tgt = num_result.refer;
if( is_index ) {
if( tgt.field->type != FldIndex && src.field->type != FldIndex) {
error_msg(src.loc, "invalid SET %s (%s) TO %s (%s): not a field index",
tgt.field->name, cbl_field_type_str(tgt.field->type),
src.field->name, cbl_field_type_str(src.field->type));
delete tgt_list;
return false;
}
} else {
if( ! valid_move( tgt.field, src.field ) ) {
if( src.field->type == FldPointer &&
tgt.field->type == FldPointer ) {
if( dialect_mf() || dialect_gnu() ) return true;
dialect_error(src.loc, "MOVE POINTER", "mf");
}
if( ! is_index ) {
char ach[16];
char stype[32];
char dtype[32];
strcpy(stype, cbl_field_type_str(src.field->type));
strcpy(dtype, cbl_field_type_str(tgt.field->type));
if( src.field->attr & all_alpha_e )
{
strcpy(stype, "FldAlphabetic");
}
if( tgt.field->attr & all_alpha_e )
{
strcpy(dtype, "FldAlphabetic");
}
if( !(src.field->attr & scaled_e) && src.field->data.rdigits )
{
sprintf(ach, ".%d", src.field->data.rdigits);
strcat(stype, ach);
}
if( !(tgt.field->attr & scaled_e) && tgt.field->data.rdigits )
{
sprintf(ach, ".%d", tgt.field->data.rdigits);
strcat(dtype, ach);
}
error_msg(src.loc, "cannot MOVE '%s' (%s) to '%s' (%s)",
name_of(src.field), stype,
name_of(tgt.field), dtype);
delete tgt_list;
return false;
}
}
}
}
size_t ntgt = tgt_list->targets.size();
std::vector <cbl_refer_t> tgts(ntgt);
std::transform( tgt_list->targets.begin(), tgt_list->targets.end(), tgts.begin(),
[]( const cbl_num_result_t& res ) { return res.refer; } );
parser_move(ntgt, tgts.data(), src);
delete tgt_list;
return true;
}
#define parser_move2(P, S) \
parser_move_carefully(__func__, __LINE__, (P), (S), false)
#define parser_index(P, S) \
parser_move_carefully(__func__, __LINE__, (P), (S), true)
static void
ast_set_pointers( const list<cbl_num_result_t>& tgts, cbl_refer_t src ) {
assert(!tgts.empty());
assert(src.field || src.prog_func);
size_t nptr = tgts.size();
std::vector <cbl_refer_t> ptrs(nptr);
std::transform( tgts.begin(), tgts.end(), ptrs.begin(), cbl_num_result_t::refer_of );
parser_set_pointers(nptr, ptrs.data(), src);
}
void
stringify( refer_collection_t *inputs,
const cbl_refer_t& into, const cbl_refer_t& pointer,
cbl_label_t *on_error = NULL,
cbl_label_t *not_error = NULL);
void unstringify( const cbl_refer_t& src, refer_list_t *delimited,
unstring_into_t * into,
cbl_label_t *on_error = NULL,
cbl_label_t *not_error = NULL );
static cbl_label_t *
implicit_paragraph()
{
cbl_name_t name;
sprintf(name, "_implicit_paragraph_" HOST_SIZE_T_PRINT_UNSIGNED,
(fmt_size_t)symbol_index());
// Programs have to start with an implicit paragraph
return label_add(LblParagraph, name, yylineno);
}
static cbl_label_t *
implicit_section()
{
cbl_name_t name;
sprintf(name, "_implicit_section_" HOST_SIZE_T_PRINT_UNSIGNED,
(fmt_size_t)symbol_index());
// Programs have to start with an implicit section
return label_add(LblSection, name, yylineno);
}
static void
// cppcheck-suppress constParameterPointer
ast_enter_exit_section( cbl_label_t * section ) {
auto implicit = section? implicit_paragraph() : NULL;
struct { cbl_label_t *para, *sect;
inline bool exists() const { return sect != NULL && para != NULL; }
} prior = {
current.new_paragraph(implicit),
current.new_section(section)
};
if( false && yydebug ) {
fprintf(stderr, "( %d ) %s:%d: leaving section %s paragraph %s\n",
yylineno, __func__, __LINE__,
prior.sect? prior.sect->name : "''",
prior.para? prior.para->name : "''");
}
if( prior.exists() ) {
parser_leave_paragraph(prior.para);
parser_leave_section(prior.sect);
}
if( section ) {
parser_enter_section(section);
parser_enter_paragraph(implicit);
}
}
static inline void
ast_enter_section( cbl_label_t * section ) {
assert(section);
section->lain = yylineno;
ast_enter_exit_section( section );
}
static inline void
ast_exit_section() {
ast_enter_exit_section( NULL );
}
static void
ast_enter_paragraph( cbl_label_t * para ) {
para->lain = yylineno;
cbl_label_t *prior = current.new_paragraph(para);
if( prior ) {
parser_leave_paragraph(prior);
}
parser_enter_paragraph(para);
}
static bool
data_division_ready() {
// Install and use any alphabets.
if( nparse_error == 0 ) { // error might have stemmed from the alphabet itself
const char *name = current.collating_sequence();
if( ! symbols_alphabet_set(PROGRAM, name) ) {
error_msg(yylloc, "no alphabet '%s' defined", name);
return false;
}
}
// Tell codegen about symbols.
static size_t nsymbol = 0;
if( (nsymbol = symbols_update(nsymbol, nparse_error == 0)) > 0 ) {
if( ! literally_one ) {
literally_one = new_literal("1");
literally_zero = new_literal("0");
}
}
if( nsymbol == 0 || nparse_error > 0 ) {
dbgmsg( HOST_SIZE_T_PRINT_DEC " errors in DATA DIVISION, compilation ceases",
(fmt_size_t)nparse_error );
return false;
}
return true;
}
static
bool
anybody_redefines( const cbl_field_t *tree )
{
bool retval = false;
while(tree)
{
if( symbol_redefines(tree) )
{
retval = true;
break;
}
// cppcheck-suppress [unreadVariable] obviously not true
tree = parent_of(tree);
}
return retval;
}
static bool
procedure_division_ready( YYLTYPE loc, cbl_field_t *returning, ffi_args_t *ffi_args ) {
auto prog = cbl_label_of(symbols_begin(current.program_index()));
if( prog->type == LblFunction ) {
if( ! returning ) {
error_msg(loc, "FUNCTION %s requires RETURNING", prog->name);
return false;
} else {
prog->returning = field_index(returning);
}
current.udf_update(ffi_args);
}
if( returning ) {
if( ! (returning->level == 1 || returning->level == 77) ) {
error_msg(loc, "RETURNING %s must be level 01 or 77", returning->name);
}
if( symbol_redefines(returning) ) {
error_msg(loc, "RETURNING %s cannot REDFINE anything", returning->name);
}
}
if( ffi_args ) {
size_t i=0;
for( const auto& arg : ffi_args->elems ) {
auto field = arg.refer.field;
i++;
if( returning == field ) {
error_msg(loc, "RETURNING %s duplicates USING parameter %zu",
returning->name, i);
}
if( ! (field->level == 1 || field->level == 77) ) {
error_msg(loc, "USING %s must be level 01 or 77",
field->name);
}
if( symbol_redefines(field) ) {
error_msg(loc, "USING %s cannot REDEFINE anything",
field->name );
}
}
}
// Apply ECs from the command line
std::list<exception_turn_t>& exception_turns = current.pending_exceptions();
for( const auto& exception_turn : exception_turns) {
apply_cdf_turn(exception_turn);
}
exception_turns.clear();
// Start the Procedure Division.
size_t narg = ffi_args? ffi_args->elems.size() : 0;
std::vector <cbl_ffi_arg_t> args(narg);
cbl_ffi_arg_t*pargs = NULL;
if( narg > 0 ) {
std::copy(ffi_args->elems.begin(), ffi_args->elems.end(), args.begin());
pargs = args.data();
}
// Create program initialization section. We build it on an island,
// that gets executed only if the program is IS INITIAL, or when the
// program is the subject of a CANCEL statement.
static const char init[] = "_INITIALIZE_PROGRAM";
static const char tini[] = "_INITIALIZE_DONE";
struct cbl_label_t * init_label = label_add(LblSection, init, yylineno);
struct cbl_label_t * tini_label = label_add(LblSection, tini, yylineno);
// parser_division(procedure_div_e) needs initial_section:
prog->initial_section = symbol_index(symbol_elem_of(init_label));
if( current.program_index() > 1 ) {
ast_exit_section();
}
parser_division( procedure_div_e, returning, narg, pargs );
std::for_each( symbols_begin(current.program_index()), symbols_end(),
[]( auto& elem ) {
if( elem.type == SymField ) {
auto f = cbl_field_of(&elem);
if( f->has_attr(local_e) ) {
parser_local_add(f);
}
}
} );
// At this point we count up the number of variables that will need to be
// initialized in _INITIALIZE_PROGRAM:
int count_of_variables = 0;
for( symbol_elem_t *e =
symbols_begin(1 + current.program_index());
e < symbols_end(); e++ ) {
if( is_program(*e) ) break;
if( e->type != SymField ) continue;
cbl_field_t *f = cbl_field_of(e);
if( !f->var_decl_node )
{
// This can happen when there was an error parsing the data division
continue;
}
if( f->type == FldForward ) continue;
if( f->type == FldLiteralA ) continue;
if( anybody_redefines(f) ) continue;
if( f->has_attr(linkage_e) ) continue;
if( f->has_attr(local_e) ) continue;
if( f->is_typedef() ) {
auto isym = end_of_group( symbol_index(e) );
e = symbol_at(--isym);
continue;
}
count_of_variables += 1;
}
// Allocate space for the static table of variables
parser_init_list_size(count_of_variables);
// Do a second pass:
// Initialize the static table with the variables:
for( symbol_elem_t *e =
symbols_begin(1 + current.program_index());
e < symbols_end(); e++ ) {
if( is_program(*e) ) break;
if( e->type != SymField ) continue;
cbl_field_t *f = cbl_field_of(e);
if( !f->var_decl_node )
{
// This can happen when there was an error parsing the data division
continue;
}
if( f->type == FldForward ) continue;
if( f->type == FldLiteralA ) continue;
if( anybody_redefines(f) ) continue;
if( f->has_attr(linkage_e) ) continue;
if( f->has_attr(local_e) ) continue;
if( f->is_typedef() ) {
auto isym = end_of_group( symbol_index(e) );
e = symbol_at(--isym);
continue;
}
parser_init_list_element(f);
}
// This is where we jump over the island
parser_label_goto(tini_label);
// And here we create the initialization section:
ast_enter_section(init_label); // _INITIALIZE_PROGRAM section.
parser_init_list();
// Lay down an implicit section to end the init_label
ast_enter_section(implicit_section());
// This is the end of the island
parser_label_label(tini_label);
if( current.program()->initial ) {
// We perform the section we just layed down when IS INITIAL
parser_perform(init_label);
}
return true;
}
static size_t file_section_fd;
static size_t current_sort_file;
static bool
file_section_fd_set( file_entry_type_t type, char name[], const YYLTYPE& loc ) {
static std::set<size_t> has_fd;
// File must have been uniquely created by SELECT.
// FD names are also unique within a program.
auto e = symbol_file(PROGRAM, name);
if( !e ) {
error_msg(loc, "file name not found");
return false;
}
file_section_fd = symbol_index(e);
auto result = has_fd.insert(file_section_fd);
if( !result.second ) {
auto f = cbl_file_of(e);
const char *type_str = "???";
switch(type) {
case fd_e: type_str = "FD"; break;
case sd_e: type_str = "SD"; break;
}
error_msg(loc, "%s %s previously defined on line %d",
type_str, f->name, f->line);
return false;
}
auto& file(*cbl_file_of(e));
file.entry_type = type;
if( file.org == file_disorganized_e ) {
file.org = file_sequential_e;
}
return file_section_fd > 0;
}
/*
* While in the File Section, set the parent of each 01 to be the FD
* default_record, and its file member to the file's symbol index.
*/
static bool
file_section_parent_set( cbl_field_t *field ) {
if( symbol_at(file_section_fd)->type == SymFile ) {
auto file = cbl_file_of(symbol_at(file_section_fd));
auto record_area = cbl_field_of(symbol_at(file->default_record));
record_area->data.capacity = std::max(record_area->data.capacity,
field->data.capacity);
field->file = file_section_fd;
const auto redefined = symbol_redefines(record_area);
field->parent = redefined? record_area->parent : file->default_record;
}
return file_section_fd > 0;
}
void ast_call(const YYLTYPE& loc, cbl_refer_t name,
const cbl_refer_t& returning,
size_t narg, cbl_ffi_arg_t args[],
cbl_label_t *except,
cbl_label_t *not_except,
bool is_function );
cbl_field_t *
ast_file_status_between( file_status_t lower, file_status_t upper );
void internal_ebcdic_lock();
void internal_ebcdic_unlock();
void
ast_end_program(const char name[] ) {
std::for_each( symbols_begin(), symbols_end(),
[]( const auto& elem ) {
if( elem.type == SymLabel ) {
auto& L( *cbl_label_of(&elem) );
if( L.used ) {
if( ! L.lain ) {
YYLTYPE loc { L.line, 1, L.line, 1 };
error_msg(loc, "line %d: %s "
"is used on line %d and never defined",
L.line, L.name, L.used );
}
dbgmsg("label: %.20s: %d/%d/%d",
L.name, L.line, L.lain, L.used);
}
}
} );
if( current_program_index() == 0 ) {
parser_program_hierarchy( cbl_prog_hier_t() );
} else {
ast_exit_section();
}
parser_end_program(name);
internal_ebcdic_unlock();
}
static bool
goodnight_gracie() {
const cbl_label_t *prog = current.program();
assert(prog);
std::set<std::string> externals = current.end_program();
if( !externals.empty() ) {
for( const auto& name : externals ) {
yywarn("%s calls external symbol '%s'",
prog->name, name.c_str());
}
return false;
}
// pointer still valid because name is in symbol table
ast_end_program(prog->name);
return true;
}
// false after USE statement, to enter Declarative with EC intact.
static bool statement_cleanup = true;
static YYLTYPE current_location;
static void statement_epilog( int token );
const char * keyword_str( int token );
const YYLTYPE& cobol_location() { return current_location; }
static inline void
location_set( const YYLTYPE& loc ) {
current_location = loc;
gcc_location_set(loc);
}
static void statement_begin( const YYLTYPE& loc, int token );
static void ast_first_statement( const YYLTYPE& loc ) {
if( current.is_first_statement( loc ) ) {
parser_first_statement(loc.first_line);
}
}
#pragma GCC diagnostic push