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minicalc.c
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minicalc.c
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/*******************************************************************************
*
* Parser generated by RDP on Oct 11 2010 13:08:25 from minicalc.bnf
*
*******************************************************************************/
#include <time.h>
#include "math.h"
#include "minicalc.h"
char
*rdp_sourcefilename, /* current source file name */
**rdp_sourcefilenames, /* array of source file names */
*rdp_outputfilename = "minicalc.out"; /* output file name */
int
rdp_symbol_echo = 0, /* symbol echo flag */
rdp_verbose = 0, /* verbosity flag */
rdp_sourcefilenumber, /* Source file counter */
rdp_pass; /* pass number */
int rdp_error_return = 0; /* return value for main routine */
char *rdp_tokens = "IGNORE\0"
"ID\0" "INTEGER\0" "REAL\0" "CHAR\0" "CHAR_ESC\0" "STRING\0" "STRING_ESC\0" "COMMENT\0"
"COMMENT_VISIBLE\0" "COMMENT_NEST\0" "COMMENT_NEST_VISIBLE\0" "COMMENT_LINE\0" "COMMENT_LINE_VISIBLE\0" "EOF\0" "EOLN\0" "'\"'\0"
"'('\0" "'(*'\0" "')'\0" "'*'\0" "'**'\0" "'+'\0" "','\0" "'-'\0"
"'/'\0" "';'\0" "'='\0" "'int'\0" "'print'\0" ;
mini_data * mini_temp = NULL;
void* mini = NULL;
/* Load keywords */
static void rdp_load_keywords(void)
{
scan_load_keyword("\"", "\\", RDP_T_34 /* " */, SCAN_P_STRING_ESC);
scan_load_keyword("(", NULL, RDP_T_40 /* ( */, SCAN_P_IGNORE);
scan_load_keyword("(*", "*)", RDP_T_4042 /* (* */, SCAN_P_COMMENT_NEST);
scan_load_keyword(")", NULL, RDP_T_41 /* ) */, SCAN_P_IGNORE);
scan_load_keyword("*", NULL, RDP_T_42 /* * */, SCAN_P_IGNORE);
scan_load_keyword("**", NULL, RDP_T_4242 /* ** */, SCAN_P_IGNORE);
scan_load_keyword("+", NULL, RDP_T_43 /* + */, SCAN_P_IGNORE);
scan_load_keyword(",", NULL, RDP_T_44 /* , */, SCAN_P_IGNORE);
scan_load_keyword("-", NULL, RDP_T_45 /* - */, SCAN_P_IGNORE);
scan_load_keyword("/", NULL, RDP_T_47 /* / */, SCAN_P_IGNORE);
scan_load_keyword(";", NULL, RDP_T_59 /* ; */, SCAN_P_IGNORE);
scan_load_keyword("=", NULL, RDP_T_61 /* = */, SCAN_P_IGNORE);
scan_load_keyword("int", NULL, RDP_T_int, SCAN_P_IGNORE);
scan_load_keyword("print", NULL, RDP_T_print, SCAN_P_IGNORE);
}
/* Set declarations */
set_ String_stop = SET_NULL;
set_ comment_stop = SET_NULL;
set_ e1_first = SET_NULL;
set_ e1_stop = SET_NULL;
set_ e2_first = SET_NULL;
set_ e2_stop = SET_NULL;
set_ e3_first = SET_NULL;
set_ e3_stop = SET_NULL;
set_ e4_first = SET_NULL;
set_ e4_stop = SET_NULL;
set_ e5_first = SET_NULL;
set_ e5_stop = SET_NULL;
set_ program_first = SET_NULL;
set_ program_stop = SET_NULL;
set_ rdp_e1_2_first = SET_NULL;
set_ rdp_e1_3_first = SET_NULL;
set_ rdp_e2_2_first = SET_NULL;
set_ rdp_e2_3_first = SET_NULL;
set_ rdp_e3_2_first = SET_NULL;
set_ rdp_e4_2_first = SET_NULL;
set_ rdp_program_1_first = SET_NULL;
set_ rdp_program_2_first = SET_NULL;
set_ rdp_program_3_first = SET_NULL;
set_ rdp_program_4_first = SET_NULL;
set_ rdp_program_5_first = SET_NULL;
set_ rdp_statement_1_first = SET_NULL;
set_ rdp_statement_3_first = SET_NULL;
set_ statement_first = SET_NULL;
set_ statement_stop = SET_NULL;
set_ var_dec_stop = SET_NULL;
/* Initialise sets */
static void rdp_set_initialise(void)
{
set_assign_list(&String_stop, SCAN_P_EOF, RDP_T_41 /* ) */, RDP_T_44 /* , */,SET_END);
set_assign_list(&comment_stop, SCAN_P_EOF,SET_END);
set_assign_list(&e1_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&e1_stop, SCAN_P_EOF, RDP_T_41 /* ) */, RDP_T_44 /* , */, RDP_T_59 /* ; */,SET_END);
set_assign_list(&e2_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&e2_stop, SCAN_P_EOF, RDP_T_41 /* ) */, RDP_T_43 /* + */, RDP_T_44 /* , */, RDP_T_45 /* - */,
RDP_T_59 /* ; */,SET_END);
set_assign_list(&e3_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&e3_stop, SCAN_P_EOF, RDP_T_41 /* ) */, RDP_T_42 /* * */, RDP_T_43 /* + */, RDP_T_44 /* , */,
RDP_T_45 /* - */, RDP_T_47 /* / */, RDP_T_59 /* ; */,SET_END);
set_assign_list(&e4_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, SET_END);
set_assign_list(&e4_stop, SCAN_P_EOF, RDP_T_41 /* ) */, RDP_T_42 /* * */, RDP_T_43 /* + */, RDP_T_44 /* , */,
RDP_T_45 /* - */, RDP_T_47 /* / */, RDP_T_59 /* ; */,SET_END);
set_assign_list(&e5_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, SET_END);
set_assign_list(&e5_stop, SCAN_P_EOF, RDP_T_41 /* ) */, RDP_T_42 /* * */, RDP_T_4242 /* ** */, RDP_T_43 /* + */,
RDP_T_44 /* , */, RDP_T_45 /* - */, RDP_T_47 /* / */, RDP_T_59 /* ; */,SET_END);
set_assign_list(&program_first, SCAN_P_ID, RDP_T_59 /* ; */, RDP_T_int, RDP_T_print, SET_END);
set_assign_list(&program_stop, SCAN_P_EOF,SET_END);
set_assign_list(&rdp_e1_2_first, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&rdp_e1_3_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&rdp_e2_2_first, RDP_T_42 /* * */, RDP_T_47 /* / */, SET_END);
set_assign_list(&rdp_e2_3_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&rdp_e3_2_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, SET_END);
set_assign_list(&rdp_e4_2_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, SET_END);
set_assign_list(&rdp_program_1_first, SCAN_P_ID, RDP_T_print, SET_END);
set_assign_list(&rdp_program_2_first, SCAN_P_ID, RDP_T_int, RDP_T_print, SET_END);
set_assign_list(&rdp_program_3_first, SCAN_P_ID, RDP_T_59 /* ; */, RDP_T_int, RDP_T_print, SET_END);
set_assign_list(&rdp_program_4_first, SCAN_P_ID, RDP_T_59 /* ; */, RDP_T_int, RDP_T_print, SET_END);
set_assign_list(&rdp_program_5_first, SCAN_P_ID, RDP_T_59 /* ; */, RDP_T_int, RDP_T_print, SET_END);
set_assign_list(&rdp_statement_1_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_40 /* ( */, RDP_T_43 /* + */, RDP_T_45 /* - */, SET_END);
set_assign_list(&rdp_statement_3_first, SCAN_P_ID, SCAN_P_INTEGER, RDP_T_34 /* " */, RDP_T_40 /* ( */, RDP_T_43 /* + */,
RDP_T_45 /* - */, SET_END);
set_assign_list(&statement_first, SCAN_P_ID, RDP_T_print, SET_END);
set_assign_list(&statement_stop, SCAN_P_EOF, RDP_T_59 /* ; */,SET_END);
set_assign_list(&var_dec_stop, SCAN_P_EOF, RDP_T_59 /* ; */,SET_END);
}
/* Parser forward declarations and macros */
static char* String(void);
static integer e1(void);
static integer e2(void);
static integer e3(void);
static integer e4(void);
static integer e5(void);
void program(void);
static void statement(void);
static void var_dec(void);
/* Parser functions */
static char* String(void)
{
char* result;
{
scan_test(NULL, RDP_T_34 /* " */, &String_stop);
result = SCAN_CAST->id;
scan_();
scan_test_set(NULL, &String_stop, &String_stop);
}
return result;
}
static integer e1(void)
{
integer result;
integer right;
{
result = e2();
if (scan_test_set(NULL, &rdp_e1_2_first, NULL))
{ /* Start of rdp_e1_2 */
while (1)
{
{
if (scan_test(NULL, RDP_T_43 /* + */, NULL))
{
scan_test(NULL, RDP_T_43 /* + */, &e1_stop);
scan_();
right = e2();
result += right;
}
else
if (scan_test(NULL, RDP_T_45 /* - */, NULL))
{
scan_test(NULL, RDP_T_45 /* - */, &e1_stop);
scan_();
right = e2();
result -= right;
}
else
scan_test_set(NULL, &rdp_e1_2_first, &e1_stop) ;
}
if (!scan_test_set(NULL, &rdp_e1_2_first, NULL)) break;
}
} /* end of rdp_e1_2 */
scan_test_set(NULL, &e1_stop, &e1_stop);
}
return result;
}
static integer e2(void)
{
integer result;
integer right;
{
result = e3();
if (scan_test_set(NULL, &rdp_e2_2_first, NULL))
{ /* Start of rdp_e2_2 */
while (1)
{
{
if (scan_test(NULL, RDP_T_42 /* * */, NULL))
{
scan_test(NULL, RDP_T_42 /* * */, &e2_stop);
scan_();
right = e3();
result *= right;
}
else
if (scan_test(NULL, RDP_T_47 /* / */, NULL))
{
scan_test(NULL, RDP_T_47 /* / */, &e2_stop);
scan_();
right = e3();
if (result == 0) \
text_message(TEXT_FATAL_ECHO, "Divide by zero attempted\n"); else result /= right;
}
else
scan_test_set(NULL, &rdp_e2_2_first, &e2_stop) ;
}
if (!scan_test_set(NULL, &rdp_e2_2_first, NULL)) break;
}
} /* end of rdp_e2_2 */
scan_test_set(NULL, &e2_stop, &e2_stop);
}
return result;
}
static integer e3(void)
{
integer result;
{
if (scan_test(NULL, RDP_T_43 /* + */, NULL))
{
scan_test(NULL, RDP_T_43 /* + */, &e3_stop);
scan_();
result = e3();
}
else
if (scan_test(NULL, RDP_T_45 /* - */, NULL))
{
scan_test(NULL, RDP_T_45 /* - */, &e3_stop);
scan_();
result = e3();
result = -result;
}
else
if (scan_test_set(NULL, &rdp_e3_2_first, NULL))
{
result = e4();
}
else
scan_test_set(NULL, &e3_first, &e3_stop) ;
scan_test_set(NULL, &e3_stop, &e3_stop);
}
return result;
}
static integer e4(void)
{
integer result;
integer right;
{
result = e5();
if (scan_test(NULL, RDP_T_4242 /* ** */, NULL))
{ /* Start of rdp_e4_1 */
while (1)
{
{
scan_test(NULL, RDP_T_4242 /* ** */, &e4_stop);
scan_();
right = e4();
result = (integer) pow((double) result, (double) right);
}
break; /* hi limit is 1! */
}
} /* end of rdp_e4_1 */
scan_test_set(NULL, &e4_stop, &e4_stop);
}
return result;
}
static integer e5(void)
{
integer result;
char* name;
{
if (scan_test(NULL, SCAN_P_ID, NULL))
{
scan_test(NULL, SCAN_P_ID, &e5_stop);
name = SCAN_CAST->id;
scan_();
if (symbol_lookup_key(mini, &name, NULL) == NULL)\
{\
text_message(TEXT_ERROR, "Undeclared variable '%s'\n", name);\
symbol_insert_key(mini, &name, sizeof(char*), sizeof(mini_data));\
}\
result = mini_cast(symbol_lookup_key(mini, &name, NULL))->i;
}
else
if (scan_test(NULL, SCAN_P_INTEGER, NULL))
{
scan_test(NULL, SCAN_P_INTEGER, &e5_stop);
result = SCAN_CAST->data.i;
scan_();
}
else
if (scan_test(NULL, RDP_T_40 /* ( */, NULL))
{
scan_test(NULL, RDP_T_40 /* ( */, &e5_stop);
scan_();
result = e1();
scan_test(NULL, RDP_T_41 /* ) */, &e5_stop);
scan_();
}
else
scan_test_set(NULL, &e5_first, &e5_stop) ;
scan_test_set(NULL, &e5_stop, &e5_stop);
}
return result;
}
void program(void)
{
{
if (scan_test_set(NULL, &rdp_program_4_first, NULL))
{ /* Start of rdp_program_4 */
while (1)
{
{
if (scan_test_set(NULL, &rdp_program_2_first, NULL))
{ /* Start of rdp_program_2 */
while (1)
{
{
if (scan_test(NULL, RDP_T_int, NULL))
{
var_dec();
}
else
if (scan_test_set(NULL, &rdp_program_1_first, NULL))
{
statement();
}
else
scan_test_set(NULL, &rdp_program_2_first, &program_stop) ;
}
break; /* hi limit is 1! */
}
} /* end of rdp_program_2 */
scan_test(NULL, RDP_T_59 /* ; */, &program_stop);
scan_();
}
if (!scan_test_set(NULL, &rdp_program_4_first, NULL)) break;
}
} /* end of rdp_program_4 */
scan_test_set(NULL, &program_stop, &program_stop);
}
}
static void statement(void)
{
char* name;
integer val;
char* str;
{
if (scan_test(NULL, SCAN_P_ID, NULL))
{
scan_test(NULL, SCAN_P_ID, &statement_stop);
name = SCAN_CAST->id;
scan_();
if (symbol_lookup_key(mini, &name, NULL) == NULL)\
{\
text_message(TEXT_ERROR, "Undeclared variable '%s'\n", name);\
symbol_insert_key(mini, &name, sizeof(char*), sizeof(mini_data));\
}\
scan_test(NULL, RDP_T_61 /* = */, &statement_stop);
scan_();
val = e1();
mini_cast(symbol_lookup_key(mini, &name, NULL))->i = val;
}
else
if (scan_test(NULL, RDP_T_print, NULL))
{
scan_test(NULL, RDP_T_print, &statement_stop);
scan_();
scan_test(NULL, RDP_T_40 /* ( */, &statement_stop);
scan_();
{ /* Start of rdp_statement_3 */
while (1)
{
scan_test_set(NULL, &rdp_statement_3_first, &statement_stop);
{
if (scan_test_set(NULL, &rdp_statement_1_first, NULL))
{
val = e1();
printf("%li", val);
}
else
if (scan_test(NULL, RDP_T_34 /* " */, NULL))
{
str = String();
printf("%s", str);
}
else
scan_test_set(NULL, &rdp_statement_3_first, &statement_stop) ;
}
if (SCAN_CAST->token != RDP_T_44 /* , */) break;
scan_();
}
} /* end of rdp_statement_3 */
scan_test(NULL, RDP_T_41 /* ) */, &statement_stop);
scan_();
}
else
scan_test_set(NULL, &statement_first, &statement_stop) ;
scan_test_set(NULL, &statement_stop, &statement_stop);
}
}
static void var_dec(void)
{
char* name;
integer val;
{
scan_test(NULL, RDP_T_int, &var_dec_stop);
scan_();
{ /* Start of rdp_var_dec_3 */
while (1)
{
scan_test(NULL, SCAN_P_ID, &var_dec_stop);
{
scan_test(NULL, SCAN_P_ID, &var_dec_stop);
name = SCAN_CAST->id;
scan_();
if (scan_test(NULL, RDP_T_61 /* = */, NULL))
{ /* Start of rdp_var_dec_1 */
while (1)
{
{
scan_test(NULL, RDP_T_61 /* = */, &var_dec_stop);
scan_();
val = e1();
}
break; /* hi limit is 1! */
}
} /* end of rdp_var_dec_1 */
mini_cast(symbol_insert_key(mini, &name, sizeof(char*), sizeof(mini_data)))\
->i = val; \
}
if (SCAN_CAST->token != RDP_T_44 /* , */) break;
scan_();
}
} /* end of rdp_var_dec_3 */
scan_test_set(NULL, &var_dec_stop, &var_dec_stop);
}
}
int main(int argc, char *argv[])
{
clock_t rdp_finish_time, rdp_start_time = clock();
int
rdp_symbol_statistics = 0, /* show symbol_ table statistics flag */
rdp_line_echo_all = 0, /* make a listing on all passes flag */
rdp_filter = 0, /* filter flag */
rdp_line_echo = 0, /* make listing flag */
rdp_lexicalise = 0; /* print lexicalised output flag */
unsigned long rdp_textsize = 35000l; /* size of scanner text array */
unsigned long rdp_tabwidth = 8l; /* tab expansion width */
char* rdp_vcg_filename = NULL; /* filename for -V option */
arg_message("Minicalc interpreter V1.50 (c) Adrian Johnstone 1997\n" RDP_STAMP "\n\n""Usage: minicalc [options] source[.m]");
arg_message("");
arg_boolean('f', "Filter mode (read from stdin and write to stdout)", &rdp_filter);
arg_boolean('l', "Make a listing", &rdp_line_echo);
arg_boolean('L', "Print lexicalised source file", &rdp_lexicalise);
arg_string ('o', "Write output to filename", &rdp_outputfilename);
arg_boolean('s', "Echo each scanner symbol as it is read", &rdp_symbol_echo);
arg_boolean('S', "Print summary symbol table statistics", &rdp_symbol_statistics);
arg_numeric('t', "Tab expansion width (default 8)", &rdp_tabwidth);
arg_numeric('T', "Text buffer size in bytes for scanner (default 20000)", &rdp_textsize);
arg_boolean('v', "Set verbose mode", &rdp_verbose);
arg_string ('V', "Write derivation tree to filename in VCG format", &rdp_vcg_filename);
rdp_sourcefilenames = arg_process(argc, argv);
/* Fix up filetypes */
for (rdp_sourcefilenumber = 0; rdp_sourcefilenames[rdp_sourcefilenumber] != NULL; rdp_sourcefilenumber++)
rdp_sourcefilenames[rdp_sourcefilenumber] = text_default_filetype(rdp_sourcefilenames[rdp_sourcefilenumber], "m");
if (rdp_filter)
{
rdp_sourcefilenames[0] = "-";
rdp_outputfilename = "-";
rdp_sourcefilenames[1] = NULL; /* make sure no further filenames are taken from the array */
}
if ((rdp_sourcefilename = rdp_sourcefilenames[0]) == NULL)
arg_help("no source files specified");
if (rdp_sourcefilenames[1] != NULL)
text_message(TEXT_FATAL, "multiple source files not allowed\n");
text_init(rdp_textsize, 25, 100, (int) rdp_tabwidth);
scan_init(0, 0, 0, rdp_symbol_echo, rdp_tokens);
if (rdp_lexicalise)
scan_lexicalise();
mini = symbol_new_table("mini", 101, 31, symbol_compare_string, symbol_hash_string, symbol_print_string);
rdp_set_initialise();
rdp_load_keywords();
if (rdp_verbose)
text_printf("\nMinicalc interpreter V1.50 (c) Adrian Johnstone 1997\n" RDP_STAMP "\n\n");
for (rdp_pass = 1; rdp_pass <= RDP_PASSES; rdp_pass++)
{
text_echo(rdp_line_echo_all || (rdp_line_echo && rdp_pass == RDP_PASSES));
for (rdp_sourcefilenumber = 0; (rdp_sourcefilename = rdp_sourcefilenames[rdp_sourcefilenumber]) != NULL; rdp_sourcefilenumber++)
{
if (text_open(rdp_sourcefilename) == NULL)
arg_help("unable to open source file");
text_get_char();
scan_();
program(); /* call parser at top level */
if (text_total_errors() != 0)
text_message(TEXT_FATAL, "error%s detected in source file ''\n", text_total_errors() == 1 ? "" : "s", rdp_sourcefilename); /* crash quietly */
}
}
rdp_sourcefilename = rdp_sourcefilenames[0]; /* Reset filename to first file in the list */
if (rdp_symbol_statistics)
{
symbol_print_all_table_statistics(11);
symbol_print_all_table();
}
text_print_total_errors();
if (rdp_verbose)
{
rdp_finish_time = clock();
text_message(TEXT_INFO, "%.3f CPU seconds used\n", ((double) (rdp_finish_time-rdp_start_time)) / CLOCKS_PER_SEC);
}
return rdp_error_return;
}
/* End of minicalc.c */