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buildin.c
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/**
* Implementace překladače imperativního jazyka IFJ22
*
* @file buildin.h
* @author Josef Kuchař ([email protected])
* @author Matej Sirovatka ([email protected])
* @author Tomáš Běhal ([email protected])
* @author Šimon Benčík ([email protected])
* @brief IFJ22 buildin functions
*/
#include "buildin.h"
void gen_func_write(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?write$declared\n"
"MOVE GF@?write$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL write\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@i\n" // Loop counter
"DEFVAR LF@current\n" // Current term
"POPS LF@i\n" // Get number of terms
"LABEL !write_loop\n" // Loop
"JUMPIFEQ !write_loop_end int@0 LF@i\n" // Exit loop if i == 0
"SUB LF@i LF@i int@1\n" // i--
"POPS LF@current\n" // Get current term
"WRITE LF@current\n" // Output current term
"JUMP !write_loop\n" // Back to loop
"LABEL !write_loop_end\n" // End of loop
"PUSHS nil@nil\n" // Return null
"POPFRAME\n"
"RETURN\n");
}
void gen_func_readi(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?readi$declared\n"
"MOVE GF@?readi$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL readi\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"READ LF@tmp int\n" // Read int
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_readf(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?readf$declared\n"
"MOVE GF@?readf$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL readf\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"READ LF@tmp float\n" // Read float
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_reads(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?reads$declared\n"
"MOVE GF@?reads$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL reads\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"READ LF@tmp string\n" // Read string
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_strlen(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?strlen$declared\n"
"MOVE GF@?strlen$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL strlen\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"POPS LF@tmp\n" // Get string
"TYPE GF@?type1 LF@tmp\n" // Get type
"JUMPIFNEQ !ERR_SEM_CALL string@string GF@?type1\n"
"STRLEN LF@tmp LF@tmp\n" // Get length
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_chr(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?chr$declared\n"
"MOVE GF@?chr$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL chr\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"POPS LF@tmp\n" // Get int
"TYPE GF@?type1 LF@tmp\n" // Get type
"JUMPIFNEQ !ERR_SEM_CALL string@int GF@?type1\n"
"INT2CHAR LF@tmp LF@tmp\n" // Convert to char
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_ord(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?ord$declared\n"
"MOVE GF@?ord$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL ord\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"POPS LF@tmp\n" // Get string
"TYPE GF@?type1 LF@tmp\n" // Get type
"JUMPIFNEQ !ERR_SEM_CALL string@string GF@?type1\n" // Check type
"JUMPIFEQ !ord_0 string@ LF@tmp\n" // Check if empty
"STRI2INT LF@tmp LF@tmp int@0\n" // Get ASCII code of first char
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n"
"LABEL !ord_0\n"
"PUSHS int@0\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_func_floatval(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?floatval$declared\n"
"MOVE GF@?floatval$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL floatval\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"POPS LF@tmp\n" // Get term
"TYPE GF@?type1 LF@tmp\n"
"JUMPIFEQ !floatval_null string@nil GF@?type1\n" // null
"JUMPIFEQ !floatval_int string@int GF@?type1\n" // int
"JUMPIFEQ !floatval_end string@float GF@?type1\n" // float
"JUMP !ERR_SEM_COMP\n"
"LABEL !floatval_null\n"
"MOVE LF@tmp float@0x0p+0\n" // null -> 0.0
"JUMP !floatval_end\n"
"LABEL !floatval_int\n"
"INT2FLOAT LF@tmp LF@tmp\n" // int -> float
"LABEL !floatval_end\n"
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_intval(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?intval$declared\n"
"MOVE GF@?intval$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL intval\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"POPS LF@tmp\n" // Get term
"TYPE GF@?type1 LF@tmp\n"
"JUMPIFEQ !intval_null string@nil GF@?type1\n" // null
"JUMPIFEQ !intval_end string@int GF@?type1\n" // int
"JUMPIFEQ !intval_float string@float GF@?type1\n" // float
"JUMP !ERR_SEM_COMP\n"
"LABEL !intval_null\n"
"MOVE LF@tmp int@0\n" // null -> 0
"JUMP !intval_end\n"
"LABEL !intval_float\n"
"FLOAT2INT LF@tmp LF@tmp\n" // float -> int
"LABEL !intval_end\n"
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_strval(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?strval$declared\n"
"MOVE GF@?strval$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL strval\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@tmp\n"
"POPS LF@tmp\n" // Get term
"TYPE GF@?type1 LF@tmp\n"
"JUMPIFEQ !strval_null string@nil GF@?type1\n" // null
"JUMPIFEQ !strval_end string@string GF@?type1\n" // string
"JUMP !ERR_SEM_COMP\n"
"LABEL !strval_null\n"
"MOVE LF@tmp string@\n" // null -> ""
"LABEL !strval_end\n"
"PUSHS LF@tmp\n" // Return
"POPFRAME\n"
"RETURN\n");
}
void gen_func_substring(gen_t* gen) {
str_add_cstr(&gen->header,
"DEFVAR GF@?substring$declared\n"
"MOVE GF@?substring$declared bool@true\n");
str_add_cstr(&gen->functions,
"LABEL substring\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"DEFVAR LF@i\n"
"DEFVAR LF@j\n"
"DEFVAR LF@str\n"
"DEFVAR LF@tmp\n"
"DEFVAR LF@res\n"
"DEFVAR LF@len\n"
"POPS LF@str\n" // Get string
"TYPE GF@?type1 LF@str\n" // Get type
"JUMPIFNEQ !ERR_SEM_CALL string@string GF@?type1\n" // Check type
"STRLEN LF@len LF@str\n" // Get length
"POPS LF@i\n" // Get start index
"TYPE GF@?type1 LF@i\n" // Get type
"JUMPIFNEQ !ERR_SEM_CALL string@int GF@?type1\n" // Check type
"POPS LF@j\n" // Get end index
"TYPE GF@?type1 LF@j\n" // Get type
"LT GF@?tmp1 LF@i int@0\n" // Check start index
"JUMPIFEQ !substring_null GF@?tmp1 bool@true\n" //
"LT GF@?tmp1 LF@j int@0\n" // Check end index
"JUMPIFEQ !substring_null GF@?tmp1 bool@true\n" //
"GT GF@?tmp1 LF@i LF@j\n" // Check start index
"JUMPIFEQ !substring_null GF@?tmp1 bool@true\n" //
"GT GF@?tmp1 LF@i LF@len\n" // Check start index
"JUMPIFEQ !substring_null GF@?tmp1 bool@true\n" //
"JUMPIFEQ !substring_null LF@i LF@len\n" //
"GT GF@?tmp1 LF@j LF@len\n" // Check end index
"JUMPIFEQ !substring_null GF@?tmp1 bool@true\n" //
"JUMPIFNEQ !ERR_SEM_CALL string@int GF@?type1\n" // Check type
"MOVE LF@res string@\n" // res = ""
"LABEL !substring_loop\n" // Loop
"JUMPIFEQ !substring_loop_end LF@i LF@j\n" // If i == j, end
"GETCHAR LF@tmp LF@str LF@i\n" // Get char at index i
"CONCAT LF@res LF@res LF@tmp\n" // res += char
"ADD LF@i LF@i int@1\n" // i++
"JUMP !substring_loop\n" // Jump to loop
"LABEL !substring_loop_end\n" // Loop end
"PUSHS LF@res\n" // Return
"POPFRAME\n"
"RETURN\n"
"LABEL !substring_null\n"
"PUSHS nil@nil\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_num_prepare(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !num_prepare\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
// Get values from stack
"POPS GF@?tmp2\n"
"POPS GF@?tmp1\n"
// Check if values are int or float or null
"TYPE GF@?type1 GF@?tmp1\n"
"JUMPIFEQ !ERR_SEM_COMP string@string GF@?type1\n"
"JUMPIFEQ !ERR_SEM_COMP string@bool GF@?type1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"JUMPIFEQ !ERR_SEM_COMP string@string GF@?type2\n"
"JUMPIFEQ !ERR_SEM_COMP string@bool GF@?type2\n"
// Check if first value is null
"JUMPIFNEQ !num_prepare_nil GF@?type1 string@nil\n"
// If yes convert to int 0
"MOVE GF@?tmp1 int@0\n"
"MOVE GF@?type1 string@int\n"
"LABEL !num_prepare_nil\n"
// Check if second value is null
"JUMPIFNEQ !num_prepare_start GF@?type2 string@nil\n"
// If yes convert to int 0
"MOVE GF@?tmp2 int@0\n"
"MOVE GF@?type2 string@int\n"
// Start converting
"LABEL !num_prepare_start\n"
// First operand is float
"JUMPIFEQ !num_prepare_first string@float GF@?type1\n"
// Second operand is float
"JUMPIFEQ !num_prepare_second string@float GF@?type2\n"
// Both operands are int, that means we are done
"JUMP !num_prepare_end\n"
// First operant is float, check second operand
"LABEL !num_prepare_first\n"
// Both operands are float, that means we are done
"JUMPIFEQ !num_prepare_end string@float GF@?type2\n"
// First operand is float, second is int, convert second to float
"INT2FLOAT GF@?tmp2 GF@?tmp2\n"
"JUMP !num_prepare_end\n"
// Second operand is float, check first operand
"LABEL !num_prepare_second\n"
// Both operands are float, that means we are done
"JUMPIFEQ !num_prepare_end string@float GF@?type1\n"
// Second operand is float, first is int, convert first to float
"INT2FLOAT GF@?tmp1 GF@?tmp1\n"
"LABEL !num_prepare_end\n"
// Push result to stack
"PUSHS GF@?tmp1\n"
"PUSHS GF@?tmp2\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_num_prepare_div(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !num_prepare_div\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
// Get values from stack
"POPS GF@?tmp2\n"
"POPS GF@?tmp1\n"
// Check if values are int or float or null
"TYPE GF@?type1 GF@?tmp1\n"
"JUMPIFEQ !ERR_SEM_COMP string@string GF@?type1\n"
"JUMPIFEQ !ERR_SEM_COMP string@bool GF@?type1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"JUMPIFEQ !ERR_SEM_COMP string@string GF@?type2\n"
"JUMPIFEQ !ERR_SEM_COMP string@bool GF@?type2\n"
// Check if first value is null
"JUMPIFNEQ !num_prepare_div_nil GF@?type1 string@nil\n"
// If yes convert to int 0
"MOVE GF@?tmp1 int@0\n"
"MOVE GF@?type1 string@int\n"
"LABEL !num_prepare_div_nil\n"
// Check if second value is null
"JUMPIFNEQ !num_prepare_div_start GF@?type2 string@nil\n"
// If yes convert to int 0
"MOVE GF@?tmp2 int@0\n"
"MOVE GF@?type2 string@int\n"
// Start converting
"LABEL !num_prepare_div_start\n"
// First operand is float
"JUMPIFEQ !num_prepare_div_first string@float GF@?type1\n"
// Convert first operand to float
"INT2FLOAT GF@?tmp1 GF@?tmp1\n"
"LABEL !num_prepare_div_first\n"
// Second operand is float
"JUMPIFEQ !num_prepare_div_second string@float GF@?type2\n"
// Convert second operand to float
"INT2FLOAT GF@?tmp2 GF@?tmp2\n"
"LABEL !num_prepare_div_second\n"
// Push result to stack
"PUSHS GF@?tmp1\n"
"PUSHS GF@?tmp2\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_comp_prepare(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !comp_prepare\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"TYPE GF@?type1 GF@?tmp1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"MOVE GF@?tmp3 GF@?tmp1\n"
"MOVE GF@?tmp4 GF@?tmp2\n"
"JUMPIFNEQ !comp_prepare_int1 string@int GF@?type1\n"
"INT2FLOAT GF@?tmp3 GF@?tmp1\n"
"MOVE GF@?type1 string@float\n"
"LABEL !comp_prepare_int1\n"
"JUMPIFNEQ !comp_prepare_int2 string@int GF@?type2\n"
"INT2FLOAT GF@?tmp4 GF@?tmp2\n"
"MOVE GF@?type2 string@float\n"
"LABEL !comp_prepare_int2\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_concat(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !concat\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
// Get values from stack
"POPS GF@?tmp2\n"
"POPS GF@?tmp1\n"
// Check if values are string or nil
"TYPE GF@?type1 GF@?tmp1\n"
"JUMPIFEQ !ERR_SEM_COMP string@int GF@?type1\n"
"JUMPIFEQ !ERR_SEM_COMP string@float GF@?type1\n"
"JUMPIFEQ !ERR_SEM_COMP string@bool GF@?type1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"JUMPIFEQ !ERR_SEM_COMP string@int GF@?type2\n"
"JUMPIFEQ !ERR_SEM_COMP string@float GF@?type2\n"
"JUMPIFEQ !ERR_SEM_COMP string@bool GF@?type2\n"
// Check if first value is nil
"JUMPIFNEQ !concat_nil GF@?type1 string@nil\n"
// If yes convert to string ""
"MOVE GF@?tmp1 string@\n"
"LABEL !concat_nil\n"
// Check if second value is nil
"JUMPIFNEQ !concat_end GF@?type2 string@nil\n"
"MOVE GF@?tmp2 string@\n"
"LABEL !concat_end\n"
// Concatenate strings
"CONCAT GF@?tmp3 GF@?tmp1 GF@?tmp2\n"
"PUSHS GF@?tmp3\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_to_bool(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !to_bool\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"TYPE GF@?type1 GF@?tmp1\n"
"JUMPIFEQ !to_bool_string string@string GF@?type1\n"
"JUMPIFEQ !to_bool_int string@int GF@?type1\n"
"JUMPIFEQ !to_bool_float string@float GF@?type1\n"
"JUMPIFEQ !to_bool_false string@nil GF@?type1\n"
"POPFRAME\n"
"RETURN\n"
"LABEL !to_bool_string\n"
"JUMPIFEQ !to_bool_false string@ GF@?tmp1\n"
"JUMPIFEQ !to_bool_false string@0 GF@?tmp1\n"
"JUMP !to_bool_true\n"
"LABEL !to_bool_int\n"
"JUMPIFEQ !to_bool_false int@0 GF@?tmp1\n"
"JUMP !to_bool_true\n"
"LABEL !to_bool_float\n"
"JUMPIFEQ !to_bool_false float@0x0p+0 GF@?tmp1\n"
"JUMP !to_bool_true\n"
"LABEL !to_bool_false\n"
"MOVE GF@?tmp1 bool@false\n"
"POPFRAME\n"
"RETURN\n"
"LABEL !to_bool_true\n"
"MOVE GF@?tmp1 bool@true\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_equals(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !equals\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
// Get values from stack
"POPS GF@?tmp2\n"
"POPS GF@?tmp1\n"
// Check if types are same
"TYPE GF@?type1 GF@?tmp1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"JUMPIFNEQ !equals_false GF@?type1 GF@?type2\n"
// If yes check if values are same
"EQ GF@?tmp3 GF@?tmp1 GF@?tmp2\n"
"PUSHS GF@?tmp3\n"
"JUMP !equals_end\n"
"LABEL !equals_false\n"
"PUSHS bool@false\n"
"LABEL !equals_end\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_greater(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !greater\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"CALL !comp_prepare\n"
"JUMPIFEQ !greater_false string@nil GF@?type1\n"
"JUMPIFEQ !greater_same GF@?type1 GF@?type2\n"
"TYPE GF@?type1 GF@?tmp1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"JUMP !greater_diff\n"
// If yes check if values are same
"LABEL !greater_same\n"
"GT GF@?tmp3 GF@?tmp3 GF@?tmp4\n"
"PUSHS GF@?tmp3\n"
"JUMP !greater_end\n"
"LABEL !greater_diff\n"
"JUMPIFEQ !greater_string1 string@string GF@?type1\n"
"JUMPIFEQ !greater_string2 string@string GF@?type2\n"
"JUMPIFEQ !greater_null string@nil GF@?type2\n"
"JUMP !greater_true\n" // Default is true
// First param is string
"LABEL !greater_string1\n"
"JUMPIFEQ !greater_false string@ GF@?tmp1\n"
"JUMP !greater_true\n"
// Second param is string
"LABEL !greater_string2\n"
"JUMPIFEQ !greater_true string@ GF@?tmp2\n"
"JUMP !greater_false\n"
// Second param is null
"LABEL !greater_null\n"
"JUMPIFEQ !greater_int string@int GF@?type1\n"
"JUMPIFEQ !greater_float string@float GF@?type1\n"
"JUMP !greater_true\n"
// First param is int
"LABEL !greater_int\n"
"JUMPIFEQ !greater_false int@0 GF@?tmp1\n"
"JUMP !greater_true\n"
// First param is float
"LABEL !greater_float\n"
"JUMPIFEQ !greater_false float@0x0p+0 GF@?tmp1\n"
"JUMP !greater_true\n"
// Return true
"LABEL !greater_true\n"
"PUSHS bool@true\n"
"JUMP !greater_end\n"
// Return false
"LABEL !greater_false\n"
"PUSHS bool@false\n"
"LABEL !greater_end\n"
"POPFRAME\n"
"RETURN\n");
}
void gen_greater_equals(gen_t* gen) {
str_add_cstr(&gen->functions,
"LABEL !greater_equals\n"
"CREATEFRAME\n"
"PUSHFRAME\n"
"CALL !comp_prepare\n"
"JUMPIFEQ !greater_equals_true string@nil GF@?type2\n"
"JUMPIFEQ !greater_equals_same GF@?type1 GF@?type2\n"
"TYPE GF@?type1 GF@?tmp1\n"
"TYPE GF@?type2 GF@?tmp2\n"
"JUMP !greater_equals_diff\n"
// If yes check if greater or equal
"LABEL !greater_equals_same\n"
"GT GF@?tmp1 GF@?tmp3 GF@?tmp4\n"
"EQ GF@?tmp2 GF@?tmp3 GF@?tmp4\n"
"OR GF@?tmp3 GF@?tmp1 GF@?tmp2\n"
"PUSHS GF@?tmp3\n"
"JUMP !greater_equals_end\n"
"LABEL !greater_equals_diff\n"
"JUMPIFEQ !greater_equals_string1 string@string GF@?type1\n"
"JUMPIFEQ !greater_equals_string2 string@string GF@?type2\n"
"JUMPIFEQ !greater_equals_null string@nil GF@?type1\n"
"JUMP !greater_equals_false\n" // Default is false
// First param is string
"LABEL !greater_equals_string1\n"
"JUMPIFEQ !greater_equals_false string@ GF@?tmp1\n"
"JUMP !greater_equals_true\n"
// Second param is string
"LABEL !greater_equals_string2\n"
"JUMPIFEQ !greater_equals_true string@ GF@?tmp2\n"
"JUMP !greater_equals_false\n"
// First param is null
"LABEL !greater_equals_null\n"
"JUMPIFEQ !greater_equals_int string@int GF@?type2\n"
"JUMPIFEQ !greater_equals_float string@float GF@?type2\n"
"JUMP !greater_equals_false\n"
// Second param is int
"LABEL !greater_equals_int\n"
"JUMPIFEQ !greater_equals_true int@0 GF@?tmp2\n"
"JUMP !greater_equals_false\n"
// Second param is float
"LABEL !greater_equals_float\n"
"JUMPIFEQ !greater_equals_true float@0x0p+0 GF@?tmp2\n"
"JUMP !greater_equals_false\n"
// Return true
"LABEL !greater_equals_true\n"
"PUSHS bool@true\n"
"JUMP !greater_equals_end\n"
// Return false
"LABEL !greater_equals_false\n"
"PUSHS bool@false\n"
"LABEL !greater_equals_end\n"
"POPFRAME\n"
"RETURN\n");
}