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zl_parser.y
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%code requires {
#include "zl_compiler.h"
//#include "zl.h"
}
%code top {
//#include "zl_parser.h"
#include "zl_compiler.h"
#include "zl_parser.hpp"
}
%{
//#define YYPARSE_PARAM pp
//#define YYPP ((cl_parser_params *) pp)
//#define YYLEX_PARAM pp
//#define YYMAXDEPTH 10000
//#define YYINITDEPTH 300
#define YYSTYPE zlval
#define ZL_WARNING(message) { yywarning(scanner, pp, message); }
#define ZL_ERROR(message) { yyerror(scanner, pp, message); YYABORT; }
void yywarning(void *scanner, cl_parser_params *pp, const char *err);
void yyerror(void *scanner, cl_parser_params *pp, const char *err);
int yylex(zlval *yylval, void *yyscanner);
int yylex_init(void **ptr_yy_globals);
int yylex_destroy(void *yyscanner);
void yyset_extra(cl_parser_params *user_defined, void *yyscanner);
%}
%define api.pure true
%error-verbose
%lex-param {void *scanner}
%parse-param {void *scanner}
%parse-param {cl_parser_params *pp}
%left ','
%left '=' T_OR_ASSIGN T_XOR_ASSIGN T_SHL_ASSIGN T_SHR_ASSIGN T_ADD_ASSIGN T_MOD_ASSIGN T_DIV_ASSIGN T_MUL_ASSIGN T_SUB_ASSIGN T_AND_ASSIGN
%left '?' ':'
%left T_OR
%left T_AND
%left '|'
%left '^'
%left '&'
%nonassoc T_EQ T_NE
%nonassoc '<' T_LE '>' T_GE
%left T_SHL T_SHR
%left '+' '-'
%left '*' '/' '%'
%right '!' '~' T_INC T_DEC '@'
%nonassoc T_PLUS T_MINUS T_POINTER
%right '['
%token T_IF
//%left T_ELSE
%nonassoc T_THEN
%nonassoc T_ELSE
%token '.'
%token T_PTR_OP
%token T_WHILE T_DO T_BREAK T_CONTINUE T_FOR T_SWITCH T_CASE T_DEFAULT
%token T_LABEL
%token T_CONSTANT_DOUBLE
%token T_CONSTANT_LONG
%token T_CONSTANT_STRING
%token T_VOID
%token T_CHAR
%token T_SHORT
%token T_INT
%token T_LONG
%token T_FLOAT
%token T_DOUBLE
%token T_SIGNED
%token T_UNSIGNED
%token T_STRUCT
%token T_STRUCT_DEFINED
%token T_ELLIPSIS
%token T_STRING
%token T_EXTERN
%token T_VAR
%token T_IMPORT
%token T_FROM
%token T_GOTO
%token T_SIZEOF
%token T_TYPEOF
%token T_RETURN
%token T_REGISTER
%token T_OPERATOR
%token T_ASM
%left T_PARAM_SEPARATOR
%token T_NOP
%token T_DBG_PRINT_REGS
%token T_FUNCTION
%start top
%%
top
: program_list
{
pp->hc_active = 0;
cl_label_node *func;
func = cl_label_find(pp->funcs_table, "main");
if(!func)
{
ZL_ERROR("undeclared identifier");
}
cl_push(pp, OP_CALL_IMM);
cl_label_reference(func, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
cl_push(pp, OP_EOF);
cl_var_join_dimension(pp->vars_table, 1, 0, pp->hc_fill[0]);
cl_label_join_dimension(pp->funcs_table, 1, 0, pp->hc_fill[0]);
cl_const_join_dimension(pp->data_table, 1, 0, pp->hc_fill[0]);
/*
printf("\n--- %u ---\n", pp->hc_active);
zl_decompile(pp->hard_code[pp->hc_active], pp->hc_fill[pp->hc_active]);
printf("\n--- %u ---\n", pp->hc_active+1);
zl_decompile(pp->hard_code[pp->hc_active+1], pp->hc_fill[pp->hc_active+1]);
*/
cl_code_add(pp, pp->hard_code[1], pp->hc_fill[1]);
/*
printf("\n--- %u + %u -> %u ---\n", pp->hc_active, pp->hc_active+1, pp->hc_active);
zl_decompile(pp->hard_code[pp->hc_active], pp->hc_fill[pp->hc_active]);
printf("\n--- END ---\n");
*/
zfree(pp->hard_code[1]);
pp->hard_code[1] = NULL;
pp->hc_fill[1] = 0;
pp->hc_buffer_size[1] = 0;
}
;
program_list
: program_list program
| /* empty */
;
program
: f_current_level_zero declaration_statement
| f_current_level_one declaration_function
;
f_current_level_zero : { pp->hc_active = 0; } // fail merge dimensions here if initialize global var by function like: int x = func(1, 2, 3);
f_current_level_one : { pp->hc_active = 1; }
statement_list
: statement_list statement
| /* empty */
;
statement
: compound_statement
| expression_statement
| buildin_statement
| selection_statement
| labeled_statement
| jump_statement
| declaration_statement
| assembler_statement
;
compound_statement
: '{'
{
pp->current_level++;
}
statement_list '}'
{
cl_var_free_level(&pp->vars_table, pp->current_level);
pp->current_level--;
}
;
//*
assembler_statement
: T_ASM assembler_command_list '}'
;
assembler_command_list
: assembler_command '\n' assembler_command_list
| labeled_statement assembler_command_list
| assembler_command
;
assembler_command
: T_GOTO T_LABEL
{
cl_label_node *label;
label = cl_label_define(&pp->labels_table, $2.string);
free_str($2.string);
if(!label)
{
ZL_ERROR("internal error");
}
cl_push(pp, (unsigned char) $1.value);
cl_label_reference(label, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| T_OPERATOR operator_parameter ',' operator_parameter { cl_push_op(pp, (unsigned char) $1.value, &$2, &$4); }
| T_OPERATOR operator_parameter { cl_push_op(pp, (unsigned char) $1.value, &$2, NULL); }
| T_OPERATOR { cl_push_op(pp, (unsigned char) $1.value, NULL, NULL); }
| T_LABEL '(' assembler_argument_list ')'
{
cl_label_node *func;
func = cl_label_find(pp->funcs_table, $1.string);
if(!func)
{
ZL_ERROR("undeclared identifier");
}
if(func->flags & ZLF_FUNC_INTERNAL)
{
cl_push(pp, OP_CALL_IMM); // call near
}
else
{
ZL_ERROR("unsupported far call");
}
cl_label_reference(func, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| /* empty */
;
/*
assembler_command_list
: assembler_command assembler_command_list
| / * empty * /
;
assembler_command
: labeled_statement
| T_GOTO T_LABEL '\n' { cl_push(pp, (unsigned char) $1.value); cl_jump_define(&pp->jumps_table, $2.string, pp->hc_fill); free_str($2.string); cl_push_dw(pp, 0) }
| T_OPERATOR operator_parameter ',' operator_parameter '\n' { cl_push_op(pp, (unsigned char) $1.value, &$2, &$4); }
| T_OPERATOR operator_parameter '\n' { cl_push_op(pp, (unsigned char) $1.value, &$2, NULL) }
| T_OPERATOR '\n' { cl_push_op(pp, (unsigned char) $1.value, NULL, NULL) }
| T_LABEL '(' call_argument_list ')' '\n' { cl_push_op(pp, OP_CALL, &$1, NULL); free_str($1.string); }
| '\n'
;
*/
assembler_argument_list
: operator_parameter ',' assembler_argument_list { cl_push(pp, OP_PUSH_IMM); cl_push_dw(pp, $3.value); }
| operator_parameter { cl_push(pp, OP_PUSH_IMM); cl_push_dw(pp, $1.value); }
| /* empty */
;
operator_parameter
: T_REGISTER { $$ = $1; $$.flags = ARG_REG; }
| '[' T_REGISTER ']' { $$ = $1; $$.flags = ARG_PREG; }
| T_CONSTANT_LONG { $$ = $1; $$.flags = ARG_IMM; }
// | T_CONSTANT_DOUBLE { $$ = $1; $$.flags = ARG_IMM8; }
// | T_CONSTANT_STRING { $$ = $1; $$.flags = ARG_DATA; }
/*
| T_LABEL
{
$$ = $1;
$$.flags = ARG_MEM;
$$.uvalue = cl_find_var_or_func(pp->vars_table, pp->funcs_list, $1.string);
free_str($1.string);
if($$.uvalue == 1) ZL_ERROR("undeclared identifier");
}
| '[' T_LABEL ']'
{
$$ = $1;
$$.flags = ARG_PMEM;
$$.uvalue = cl_find_var_or_func(pp->vars_table, pp->funcs_list, $2.string);
free_str($2.string);
if($$.uvalue == 1) ZL_ERROR("undeclared identifier");
}
*/
;
//*/
expression_statement
: ';'
| expression ';' { cl_push(pp, OP_POP_REG); cl_push(pp, REG_EAX); }
;
buildin_statement
: T_NOP ';' { cl_push(pp, OP_NOP); }
| T_DBG_PRINT_REGS ';' { cl_push(pp, OP_DBG_PRINT); }
| T_BREAK ';'
{
cl_push(pp, OP_JMP);
if(!pp->cl_loop_stack) ZL_ERROR("break not in loop");
cl_label_reference((cl_label_node *) pp->cl_loop_stack->next_node->data, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| T_CONTINUE ';'
{
cl_push(pp, OP_JMP);
if(!pp->cl_loop_stack || !pp->cl_loop_stack->next_node) ZL_ERROR("continue not in loop");
cl_label_reference((cl_label_node *) pp->cl_loop_stack->data, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| T_BREAK T_CONSTANT_LONG ';'
{
cl_stack_buffer *lsb;
lsb = pp->cl_loop_stack;
$2.value = $2.value*2-1;
while($2.value--)
{
lsb = lsb->next_node;
if(!lsb) ZL_ERROR("break not in loop");
}
cl_push(pp, OP_JMP);
cl_label_reference((cl_label_node *) lsb->data, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| T_CONTINUE T_CONSTANT_LONG ';'
{
cl_stack_buffer *lsb;
lsb = pp->cl_loop_stack;
$2.value = ($2.value-1)*2;
while($2.value--)
{
lsb = lsb->next_node;
if(!lsb) ZL_ERROR("continue not in loop");
}
cl_push(pp, OP_JMP);
cl_label_reference((cl_label_node *) lsb->data, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| T_RETURN ';'
{
cl_label_node *lb_label;
lb_label = cl_label_find(pp->labels_table, "@exit_func");
cl_push(pp, OP_JMP);
cl_label_reference(lb_label, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
| T_RETURN assignment_expression ';'
{
cl_label_node *lb_label;
lb_label = cl_label_find(pp->labels_table, "@exit_func");
cl_push(pp, OP_POP_REG); cl_push(pp, REG_EAX);
cl_push(pp, OP_JMP);
cl_label_reference(lb_label, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
;
selection_statement
: T_WHILE
{
cl_label_node *lb_exit, *lb_condition;
lb_exit = cl_label_define(&pp->labels_table, NULL);
lb_condition = cl_label_define(&pp->labels_table, NULL);
lb_condition->offset = pp->hc_fill[pp->hc_active];
lb_condition->dimension = pp->hc_active;
lb_condition->flags = ZLF_DEFINED;
cl_stack_push(&pp->cl_loop_stack, lb_exit); // exit loop
cl_stack_push(&pp->cl_loop_stack, lb_condition); // condition
}
'(' assignment_expression ')'
{
cl_label_node *lb_exit;
lb_exit= (cl_label_node *) pp->cl_loop_stack->next_node->data;
cl_push(pp, OP_JZ_POP_STK);
cl_label_reference(lb_exit, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
statement
{
cl_label_node *lb_exit, *lb_condition;
lb_condition = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
lb_exit = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
cl_push(pp, OP_JMP);
cl_label_reference(lb_condition, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
lb_exit->offset = pp->hc_fill[pp->hc_active];
lb_exit->dimension = pp->hc_active;
lb_exit->flags = ZLF_DEFINED;
}
| T_DO
{
cl_label_node *lb_exit, *lb_condition, *lb_start;
lb_exit = cl_label_define(&pp->labels_table, NULL);
lb_condition = cl_label_define(&pp->labels_table, NULL);
lb_start = cl_label_define(&pp->labels_table, NULL);
lb_start->offset = pp->hc_fill[pp->hc_active];
lb_start->dimension = pp->hc_active;
lb_start->flags = ZLF_DEFINED;
cl_stack_push(&pp->cl_loop_stack, lb_exit); // exit loop
cl_stack_push(&pp->cl_loop_stack, lb_condition); // condition
cl_stack_push(&pp->cl_stack, lb_start); // start loop
}
statement
T_WHILE
{
cl_label_node *lb_condition;
lb_condition = (cl_label_node *) pp->cl_loop_stack->data;
lb_condition->offset = pp->hc_fill[pp->hc_active];
lb_condition->dimension = pp->hc_active;
lb_condition->flags = ZLF_DEFINED;
}
'(' assignment_expression ')'
{
cl_label_node *lb_exit, *lb_condition;
lb_condition = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
lb_exit = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
cl_push(pp, OP_JNZ_POP_STK);
cl_label_reference((cl_label_node *) cl_stack_pop(&pp->cl_stack), pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
lb_exit->offset = pp->hc_fill[pp->hc_active];
lb_exit->dimension = pp->hc_active;
lb_exit->flags = ZLF_DEFINED;
}';'
| T_FOR '(' expression ';'
{
cl_label_node *lb_exit, *lb_loop, *lb_condition;
lb_exit = cl_label_define(&pp->labels_table, NULL);
lb_loop = cl_label_define(&pp->labels_table, NULL);
cl_stack_push(&pp->cl_loop_stack, lb_exit); // exit
cl_stack_push(&pp->cl_loop_stack, lb_loop); // loop
cl_push(pp, OP_POP_REG);
cl_push(pp, REG_EAX);
lb_condition = cl_label_define(&pp->labels_table, NULL);
lb_condition->offset = pp->hc_fill[pp->hc_active];
lb_condition->dimension = pp->hc_active;
lb_condition->flags = ZLF_DEFINED;
cl_stack_push(&pp->cl_stack, lb_condition);
}
assignment_expression ';'
{
cl_label_node *lb_loop, *lb_exit, *lb_statement;
lb_statement = cl_label_define(&pp->labels_table, NULL);
lb_loop = (cl_label_node *) pp->cl_loop_stack->data;
lb_exit = (cl_label_node *) pp->cl_loop_stack->next_node->data;
cl_stack_push(&pp->cl_stack, lb_statement);
cl_push(pp, OP_JNZ_POP_STK);
cl_label_reference(lb_statement, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
cl_push(pp, OP_JMP);
cl_label_reference(lb_exit, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
lb_loop->offset = pp->hc_fill[pp->hc_active];
lb_loop->dimension = pp->hc_active;
lb_loop->flags = ZLF_DEFINED;
}
expression ')'
{
cl_label_node *lb_condition, *lb_statement;
lb_statement = (cl_label_node *) cl_stack_pop(&pp->cl_stack);
lb_condition = (cl_label_node *) cl_stack_pop(&pp->cl_stack);
cl_push(pp, OP_POP_REG);
cl_push(pp, REG_EAX);
cl_push(pp, OP_JMP);
cl_label_reference(lb_condition, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
lb_statement->offset = pp->hc_fill[pp->hc_active];
lb_statement->dimension = pp->hc_active;
lb_statement->flags = ZLF_DEFINED;
}
statement
{
cl_label_node *lb_exit, *lb_loop;
lb_loop = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
lb_exit = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
cl_push(pp, OP_JMP);
cl_label_reference(lb_loop, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
lb_exit->offset = pp->hc_fill[pp->hc_active];
lb_exit->dimension = pp->hc_active;
lb_exit->flags = ZLF_DEFINED;
}
| T_IF '(' assignment_expression ')'
{
/*
cl_label_node *lb_skip;
lb_skip = cl_label_define(&pp->labels_table, NULL);
cl_stack_push(&pp->cl_stack, lb_skip);
*/
cl_push(pp, OP_JZ_POP_STK);
//cl_label_reference(lb_skip, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_stack_push(&pp->cl_stack, (void *) pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
statement
else_statement
{
/*
cl_label_node *lb_skip;
lb_skip = (cl_label_node *) cl_stack_pop(&pp->cl_stack);
lb_skip->offset = pp->hc_fill[pp->hc_active];
lb_skip->flags = ZLF_DEFINED;
*/
unsigned long lb_skip;
lb_skip = (unsigned long) cl_stack_pop(&pp->cl_stack);
cl_code_replace(pp->hard_code[pp->hc_active], lb_skip, pp->hc_fill[pp->hc_active] - lb_skip);
}
| T_SWITCH '(' assignment_expression ')' '{' // conflict with 'goto' into
{
cl_label_node *lb_exit;
lb_exit = cl_label_define(&pp->labels_table, NULL);
cl_stack_push(&pp->cl_loop_stack, lb_exit); // break switch
cl_stack_push(&pp->cl_loop_stack, lb_exit); // continue switch (continue == break)
cl_stack_push(&pp->cl_stack, 0); // lb_previous
cl_push(pp, OP_POP_REG); cl_push(pp, REG_EAX); // eax = result of assignment_expression
}
switch_statement_list '}'
{
cl_label_node *lb_exit;
cl_stack_pop(&pp->cl_stack); // lb_previous
lb_exit = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
lb_exit = (cl_label_node *) cl_stack_pop(&pp->cl_loop_stack);
// break jump here
lb_exit->offset = pp->hc_fill[pp->hc_active];
lb_exit->dimension = pp->hc_active;
lb_exit->flags = ZLF_DEFINED;
}
;
switch_statement_list
: switch_case_list
| switch_default
| switch_case_list switch_default
;
switch_case_list
: switch_case
| switch_case_list switch_case
;
switch_case
: T_CASE
{
cl_push(pp, OP_PUSH_REG); cl_push(pp, REG_EAX);
}
expr ':'
{
unsigned long lb_previous;
lb_previous = (unsigned long) cl_stack_pop(&pp->cl_stack);
cl_push(pp, OP_POP_REG); cl_push(pp, REG_ECX);
cl_push(pp, OP_POP_REG); cl_push(pp, REG_EAX);
cl_push(pp, OP_CMP_REG_REG); cl_push(pp, REG_EAX); cl_push(pp, REG_ECX);
cl_push(pp, OP_JNE);
cl_stack_push(&pp->cl_stack, (void *) pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
// jump here from previous statement
if(lb_previous)
{
cl_code_replace(pp->hard_code[pp->hc_active], lb_previous, pp->hc_fill[pp->hc_active] - lb_previous);
}
}
statement_list
{
unsigned long lb_else;
lb_else = (unsigned long) cl_stack_pop(&pp->cl_stack);
// jmp to next statement skip cheking
cl_push(pp, OP_JMP);
cl_stack_push(&pp->cl_stack, (void *) pp->hc_fill[pp->hc_active]); // lb_previous
cl_push_dw(pp, 0);
cl_code_replace(pp->hard_code[pp->hc_active], lb_else, pp->hc_fill[pp->hc_active] - lb_else);
}
;
switch_default
: T_DEFAULT ':'
{
unsigned long lb_previous;
lb_previous = (unsigned long) cl_stack_pop(&pp->cl_stack);
if(lb_previous)
{
cl_code_replace(pp->hard_code[pp->hc_active], lb_previous, pp->hc_fill[pp->hc_active] - lb_previous);
}
}
statement_list
{
cl_stack_push(&pp->cl_stack, 0); // lb_previous
}
;
else_statement
: /* empty */ %prec T_THEN
| T_ELSE
{
/*
cl_label_node *lb_skip, *lb_else;
lb_else = (cl_label_node *) cl_stack_pop(&pp->cl_stack);
lb_skip = cl_label_define(&pp->labels_table, NULL);
*/
unsigned long lb_skip;
lb_skip = (unsigned long) cl_stack_pop(&pp->cl_stack);
cl_push(pp, OP_JMP);
//cl_label_reference(lb_skip, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_stack_push(&pp->cl_stack, (void *) pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
/*
lb_else->offset = pp->hc_fill[pp->hc_active];
lb_else->flags = ZLF_DEFINED;
cl_stack_push(&pp->cl_stack, lb_skip);
*/
cl_code_replace(pp->hard_code[pp->hc_active], lb_skip, pp->hc_fill[pp->hc_active] - lb_skip);
}
statement
;
labeled_statement
: T_LABEL ':' /*statement*/
{
cl_label_node *label;
label = cl_label_define(&pp->labels_table, $1.string);
free_str($1.string);
if(label->flags & ZLF_DEFINED)
{
ZL_ERROR("label redefined");
}
label->offset = pp->hc_fill[pp->hc_active];
label->dimension = pp->hc_active;
label->flags = ZLF_DEFINED;
}
;
jump_statement
: T_GOTO T_LABEL ';'
{
cl_label_node *label;
label = cl_label_define(&pp->labels_table, $2.string);
free_str($2.string);
if(!label)
{
ZL_ERROR("internal error");
}
cl_push(pp, (unsigned char) $1.value);
cl_label_reference(label, pp->hc_active, pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
}
;
declaration_function
: T_IMPORT T_CONSTANT_LONG function_type_specifiers pointer T_LABEL '(' T_CONSTANT_LONG ')' ';'
{
cl_label_node *func;
func = cl_label_define(&pp->funcs_table, $5.string);
free_str($5.string);
if(func->flags & ZLF_DEFINED)
{
ZL_ERROR("function redefined");
}
func->flags = ZLF_DEFINED;
if(!$2.uvalue)
{
func->flags |= ZLF_STDCALL;
}
func->library = NULL;
func->params = $7.uvalue;
}
| T_IMPORT T_CONSTANT_LONG function_type_specifiers pointer T_LABEL '(' T_CONSTANT_LONG ')' T_FROM T_CONSTANT_STRING ';'
{
cl_label_node *func;
func = cl_label_define(&pp->funcs_table, $5.string);
free_str($5.string);
if(func->flags & ZLF_DEFINED)
{
ZL_ERROR("function redefined");
}
func->flags = ZLF_DEFINED;
if(!$2.uvalue)
{
func->flags |= ZLF_STDCALL;
}
func->library = $10.string;
func->params = $7.uvalue;
}
| T_IMPORT T_CONSTANT_LONG function_type_specifiers pointer T_LABEL '(' function_arguments_specifiers ')' ';'
{
cl_label_node *func;
func = cl_label_define(&pp->funcs_table, $5.string);
free_str($5.string);
if(func->flags & ZLF_DEFINED)
{
ZL_ERROR("function redefined");
}
func->flags = ZLF_DEFINED;
if(!$2.uvalue)
{
func->flags |= ZLF_STDCALL;
}
func->library = NULL;
func->params = $7.uvalue;
}
| T_IMPORT T_CONSTANT_LONG function_type_specifiers pointer T_LABEL '(' function_arguments_specifiers ')' T_FROM T_CONSTANT_STRING ';'
{
cl_label_node *func;
func = cl_label_define(&pp->funcs_table, $5.string);
free_str($5.string);
if(func->flags & ZLF_DEFINED)
{
ZL_ERROR("function redefined");
}
func->flags = ZLF_DEFINED;
if(!$2.uvalue)
{
func->flags |= ZLF_STDCALL;
}
func->library = $10.string;
func->params = $7.uvalue;
}
| T_FUNCTION function_type_specifiers pointer T_LABEL f_current_level_increment '(' function_arguments_list ')' ';'
{
cl_label_node *func;
cl_var_free_level(&pp->vars_table, pp->current_level);
pp->current_level--;
func = cl_label_define(&pp->funcs_table, $4.string);
free_str($4.string);
if(func->flags & ZLF_DEFINED)
{
ZL_ERROR("function redefined");
}
func->flags = ZLF_FUNC_INTERNAL | $2.flags | $3.flags;
func->library = NULL;
}
| T_FUNCTION function_type_specifiers pointer T_LABEL f_current_level_increment '(' function_arguments_list ')'
{
cl_label_node *func;
cl_label_define(&pp->labels_table, "@exit_func");
func = cl_label_define(&pp->funcs_table, $4.string);
free_str($4.string);
if(func->flags & ZLF_DEFINED)
{
ZL_ERROR("function redefined");
}
if(func->flags && (func->flags != (ZLF_FUNC_INTERNAL | $2.flags | $3.flags)))
{
ZL_ERROR("function return type different that declared before");
}
// çäåñü íàäî áóäåò ïåðåñ÷èòûâàòü offset ïàðàìåòðîâ function_arguments_list â îáðàòíûé ïîðÿäîê
func->flags = ZLF_FUNC_INTERNAL | ZLF_DEFINED | $2.flags | $3.flags;
func->offset = pp->hc_fill[pp->hc_active];
func->dimension = pp->hc_active;
//func->params_size = $7.size;
pp->current_level--;
pp->stack_size = 4;
//cl_push(pp, OP_DBG_PRINT);
cl_push(pp, OP_PUSH_REG); cl_push(pp, REG_EBP);
cl_push(pp, OP_MOV_REG_REG); cl_push(pp, REG_EBP); cl_push(pp, REG_ESP);
cl_push(pp, OP_ADD_REG_IMM); cl_push(pp, REG_ESP);
cl_stack_push(&pp->cl_stack, (void *) pp->hc_fill[pp->hc_active]);
cl_push_dw(pp, 0);
//cl_push(pp, OP_NOP);
}
compound_statement
{
cl_label_node *label;
unsigned long fix_point;
label = cl_label_find(pp->labels_table, "@exit_func");
label->offset = pp->hc_fill[pp->hc_active];
label->dimension = pp->hc_active;
label->flags = ZLF_DEFINED;
//cl_push(pp, OP_NOP);
pp->stack_size -= 4;
cl_push(pp, OP_SUB_REG_IMM); cl_push(pp, REG_ESP); cl_push_dw(pp, pp->stack_size);
cl_push(pp, OP_POP_REG); cl_push(pp, REG_EBP);
//cl_push(pp, OP_DBG_PRINT);
cl_push(pp, OP_RET);
cl_push(pp, OP_EOF);
//cl_push(pp, OP_NOP);
//cl_push(pp, OP_NOP);
//cl_push(pp, OP_NOP);
fix_point = (unsigned long) cl_stack_pop(&pp->cl_stack);
pp->hard_code[pp->hc_active][fix_point] = (char)((unsigned long) (pp->stack_size & 0xFF));
pp->hard_code[pp->hc_active][fix_point+1] = (char)((unsigned long) ((pp->stack_size >> 8) & 0xFF));
pp->hard_code[pp->hc_active][fix_point+2] = (char)((unsigned long) ((pp->stack_size >> 16) & 0xFF));
pp->hard_code[pp->hc_active][fix_point+3] = (char)((unsigned long) (pp->stack_size >> 24));
if(cl_label_fix(pp->labels_table, pp->hard_code[pp->hc_active]))
{
ZL_ERROR("error, jump to undefined label");
}
cl_label_free(&pp->labels_table);
}
;
/*
function_type
: declaration_specifiers { $$.flags = $1.flags; }
| declaration_specifiers var_or_func_label { $$.flags = $1.flags | $2.flags; }
;
//*/
f_current_level_increment: { pp->current_level++; };
function_arguments_specifiers
: declaration_specifiers pointer
{
$$.uvalue = 1;
}
| function_arguments_specifiers ',' declaration_specifiers pointer
{
$$.value = $1.value + 1;
}
| /* empty - function does not have arguments */
{
$$.value = 0;
}
;
function_arguments_list
: function_argument
{
$$.value = 8;
$1.var->offset = $$.uvalue;
$1.var->flags |= ZLF_PARAM;
//ZL_WARNING("first");
//printf("first rule: %s %d\n", $1.var->name, $1.var->offset);
}
| function_arguments_list ',' function_argument
{
$$.value = $1.value + 4;
$3.var->offset = $$.uvalue;
$3.var->flags |= ZLF_PARAM;
//ZL_WARNING("second");
//printf("second rule: %s offset: %d\n", $3.var->name, $3.var->offset);
}
| /* empty - function does not have arguments */
;
function_argument
: declaration_specifiers
{
if(($1.flags & ZLF_EXTERNAL) && (pp->current_level > 0))
{
ZL_ERROR("external variable must be defined global");
}
if(!($1.flags & ZLF_TYPE))
{
$1.flags |= ZLF_INT; // use default type
}
cl_stack_push(&pp->cl_stack, (void *) $1.flags);
}
declarator
{
if($3.var->flags & ZLF_AUTOARRAY)
{
//ZL_ERROR("unknown size");
$3.var->size[1] = 1;
/*
$3.var->flags += 0x01000000;
$3.var->rows--;
if(!$3.var->rows)
{
$3.var->flags &= ~ZLF_ARRAY;
}
*/
}
if($3.var->flags & ZLF_ARRAY)
{
unsigned long level;
//$3.var->flags += 0x01000000;
//$3.var->size[0] = 4;
level = $3.var->rows;
$3.var->size[level] *= $3.var->size[0];
level--;
while(level)
{
$3.var->size[level] *= $3.var->size[level+1];
level--;
}
}
unsigned long dc, uc, x;
dc = 1;
uc = $3.var->rows;
while(dc < uc)
{
x = $3.var->size[dc];
$3.var->size[dc] = $3.var->size[uc];
$3.var->size[uc] = x;
dc++;
uc--;
}
$3.var->references = 0;
$$ = $3;
cl_stack_pop(&pp->cl_stack);
}
;
declaration_statement
//: declaration_specifiers ';' { /* nothing to do */ }
: declaration_specifiers
{
if(($1.flags & ZLF_EXTERNAL) && (pp->current_level > 0))
{
ZL_ERROR("external variable must be defined global");