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parser.c
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parser.c
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#include "parser.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "compiler.h"
#include "lexer.h"
#define TRUE 1
#define FALSE 0
#define LEXEME_LEN 128
FILE *output_file;
SymbolTable *class_table;
SymbolTable *method_table;
ParserInfo error_info;
int is_lexer_error = FALSE;
char *class_var_declaration_keywords[] = {"static", "field", NULL};
char *subroutine_declaration_keywords[] = {"function", "method", "constructor", NULL};
char *type_declaration_keywords[] = {"int", "char", "boolean", NULL};
char *statement_keywords[] = {"if", "while", "do", "var", "let", "return", NULL};
char *factor_keywords[] = {"-", "~", "(", "true", "false", "null", "this", NULL};
char *operand_keywords[] = {"true", "false", "null", "this", NULL};
char *vm_commands[] = {"add", "sub", "neg", "eq", "gt", "lt", "and", "or", "not", "pop", "push", "label", "goto", "if-goto", "function", "call", "return"};
char *memory_segments[] = {"static", "argument", "local", "this", "that", "pointer", "temp", "constant"};
int validate_expression();
int is_method = FALSE;
int is_array = FALSE;
int loop_label_idx = 0;
int condition_label_idx = 0;
void new_fprintf(char *cmd, char *seg, int idx) {
if (output_file == NULL) {
printf("output file not exists");
exit(1);
}
fprintf(output_file, "%s %s %d\n", cmd, seg, idx);
}
void print_cmd(FILE *output_file, VmCommand cmd, Token token) {
TableRow *r = find_symbol_in_table(class_table, token.lx);
if (r != NULL || (method_table != NULL && (r = find_symbol_in_table(method_table, token.lx)) != NULL)) {
if (r->kind == FIELD) {
new_fprintf(vm_commands[cmd], memory_segments[THIS_SEG], r->stack_idx);
} else if (r->kind == STATIC) {
new_fprintf(vm_commands[cmd], memory_segments[STATIC_SEG], r->stack_idx);
} else if (r->kind == ARGS) {
new_fprintf(vm_commands[cmd], memory_segments[ARGUMENT_SEG], r->stack_idx + is_method - 1);
} else if (r->kind == VAR) {
new_fprintf(vm_commands[cmd], memory_segments[LOCAL_SEG], r->stack_idx);
} else {
printf("error when printing to output file\n");
exit(1);
}
}
}
void print_method_invoke(char *cmd, char *class, char *method, int idx) {
if (output_file == NULL) {
printf("output file not exists");
exit(1);
}
fprintf(output_file, "%s %s.%s %d\n", cmd, class, method, idx);
}
void reset() {
class_table = NULL;
method_table = NULL;
if (output_file != NULL) {
fclose(output_file);
}
output_file = NULL;
loop_label_idx = 0;
condition_label_idx = 0;
}
int is_lexeme_acceptable(char *lexeme, char **acceptable) {
int i = 0;
while (acceptable[i] != NULL) {
if (strncmp(lexeme, acceptable[i], LEXEME_LEN) == 0) {
return TRUE;
}
i += 1;
}
return FALSE;
}
int consume_terminal(TokenType token_type, char **acceptable) {
Token token0 = PeekNextToken();
if (token0.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token0;
is_lexer_error = TRUE;
return FALSE;
}
if (token_type == RESWORD || token_type == SYMBOL) {
if (token0.tp == token_type && is_lexeme_acceptable(token0.lx, acceptable)) {
GetNextToken();
return TRUE;
}
} else if (token_type == STRING || token_type == ID || token_type == INT) {
if (token0.tp == token_type) {
GetNextToken();
return TRUE;
}
}
error_info.tk = token0;
return FALSE;
}
int validate_operand(int in_codegen_phase) {
Token token1 = PeekNextToken();
if (token1.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token1;
is_lexer_error = TRUE;
return TRUE;
}
if (token1.tp == INT || token1.tp == STRING) {
GetNextToken();
if (in_codegen_phase == TRUE) {
if (token1.tp == INT) {
fprintf(output_file, "%s %s %s\n", vm_commands[PUSH_CM], memory_segments[CONST_SEG], token1.lx);
} else if (token1.tp == STRING) {
new_fprintf(vm_commands[PUSH_CM], memory_segments[CONST_SEG], (int)strlen(token1.lx));
print_method_invoke("call", "String", "new", 1);
for (int i = 0; i < strlen(token1.lx); i++) {
new_fprintf(vm_commands[PUSH_CM], memory_segments[CONST_SEG], token1.lx[i]);
print_method_invoke("call", "String", "appendChar", 2);
}
}
}
return FALSE;
}
if (token1.tp == ID) {
TableRow *class;
int flag = FALSE;
Token temp_class_id0 = PeekNextToken();
Token temp_id_exists1;
int id_exists0 = consume_terminal(ID, (char *[]){NULL});
if (is_lexer_error) {
return TRUE;
} else if (id_exists0 == FALSE) {
error_info.er = idExpected;
return TRUE;
}
Token token2 = PeekNextToken();
if (token2.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token2;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token2.lx, (char *[]){".", NULL}) == TRUE) {
// .
int dot_exists0 = consume_terminal(SYMBOL, (char *[]){".", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (dot_exists0 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
// identifier
temp_id_exists1 = PeekNextToken();
int id_exists1 = consume_terminal(ID, (char *[]){NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (id_exists1 == FALSE) {
// error_info.er = idExpected;
error_info.er = idExpected;
return TRUE;
}
class = find_symbol_in_table(get_program_table(), temp_class_id0.lx);
TableRow *row;
if ((row = find_symbol_in_table(class_table, temp_class_id0.lx)) != NULL ||
(method_table != NULL && (row = (find_symbol_in_table(method_table, temp_class_id0.lx))) != NULL)) {
if (in_codegen_phase == FALSE) {
add_undeclare(temp_id_exists1, row->type);
} else {
class = find_symbol_in_table(get_program_table(), row->type);
}
} else if (class == NULL) {
if (in_codegen_phase == FALSE) {
add_undeclare(temp_id_exists1, temp_class_id0.lx);
add_undeclare(temp_class_id0, "");
}
} else {
if (in_codegen_phase == FALSE) {
add_undeclare(temp_id_exists1, temp_class_id0.lx);
}
}
if (in_codegen_phase == TRUE) {
flag = TRUE;
// printf("temp_class_id0 :%s\n", temp_class_id0.lx);
print_cmd(output_file, PUSH_CM, temp_class_id0);
}
} else {
SymbolTable *tr;
if (find_symbol_in_table(tr = class_table, temp_class_id0.lx) == NULL && (method_table == NULL || find_symbol_in_table(tr = method_table, temp_class_id0.lx) == NULL)) {
if (in_codegen_phase == FALSE) {
add_undeclare(temp_class_id0, tr->name);
} else {
flag = FALSE;
}
}
if (in_codegen_phase == TRUE) {
flag = FALSE;
}
}
Token token3 = PeekNextToken();
if (token3.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token3;
is_lexer_error = TRUE;
return TRUE;
}
// [expression]
if (is_lexeme_acceptable(token3.lx, (char *[]){"[", NULL}) == TRUE) {
int open_bracket_exists0 = consume_terminal(SYMBOL, (char *[]){"[", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (open_bracket_exists0 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
Token token4 = PeekNextToken();
if (token4.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token4;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression0 = token4.tp == ID || token4.tp == STRING || token4.tp == INT || (token4.tp == RESWORD && is_lexeme_acceptable(token4.lx, factor_keywords)) || (token4.tp == SYMBOL && is_lexeme_acceptable(token4.lx, factor_keywords));
if (is_expression0 == TRUE) {
int error_in_expression0 = validate_expression(in_codegen_phase);
if (error_in_expression0) {
return TRUE;
}
} else {
error_info.er = syntaxError;
error_info.tk = token4;
return TRUE;
}
int close_bracket_exists0 = consume_terminal(SYMBOL, (char *[]){"]", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (close_bracket_exists0 == FALSE) {
// error_info.er = closeBracketExpected;
error_info.er = closeBracketExpected;
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (flag == TRUE) {
TableRow *rr;
class = find_symbol_in_table(get_program_table(), temp_class_id0.lx);
if ((rr = find_symbol_in_table(class_table, temp_class_id0.lx)) != NULL || (method_table != NULL && (rr = find_symbol_in_table(method_table, temp_class_id0.lx)) != NULL)) {
class = find_symbol_in_table(get_program_table(), rr->type);
}
int stack_idx = find_symbol_in_table(class->child_table, temp_id_exists1.lx)->child_table->symbol_kind_cnt[ARGS] - 1 + (find_symbol_in_table(class->child_table, temp_id_exists1.lx)->kind == METHOD);
print_method_invoke(vm_commands[CALL_CM], class->token.lx, temp_id_exists1.lx, stack_idx);
} else {
print_cmd(output_file, PUSH_CM, temp_class_id0);
}
fprintf(output_file, "%s\n", vm_commands[ADD_CM]);
new_fprintf(vm_commands[POP_CM], memory_segments[POINTER_SEG], 1);
new_fprintf(vm_commands[PUSH_CM], memory_segments[THAT_SEG], 0);
return FALSE;
}
}
Token token50 = PeekNextToken();
if (token50.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token50;
is_lexer_error = TRUE;
return TRUE;
}
// (expressions)
if (is_lexeme_acceptable(token50.lx, (char *[]){"(", NULL}) == TRUE) {
// (
int open_paren_exists0 = consume_terminal(SYMBOL, (char *[]){"(", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (open_paren_exists0 == FALSE) {
error_info.er = openParenExpected;
return TRUE;
}
Token token5 = PeekNextToken();
if (token5.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token5;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token5.lx, (char *[]){")", NULL}) == FALSE) {
int is_expression1 = token5.tp == ID || token5.tp == STRING || token5.tp == INT || (token5.tp == RESWORD && is_lexeme_acceptable(token5.lx, factor_keywords)) || (token5.tp == SYMBOL && is_lexeme_acceptable(token5.lx, factor_keywords));
if (is_expression1 == TRUE) {
int e_in_exp1 = validate_expression(in_codegen_phase);
if (e_in_exp1 == TRUE) {
return TRUE;
}
} else {
error_info.er = syntaxError;
error_info.tk = token5;
return TRUE;
}
while (TRUE) {
Token token6 = PeekNextToken();
if (token6.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token6;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token6.lx, (char *[]){",", NULL}) == FALSE) {
break;
}
// ,
GetNextToken();
Token token7 = PeekNextToken();
if (token7.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token7;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression2 = token7.tp == ID || token7.tp == STRING || token7.tp == INT || (token7.tp == RESWORD && is_lexeme_acceptable(token7.lx, factor_keywords)) || (token7.tp == SYMBOL && is_lexeme_acceptable(token7.lx, factor_keywords));
if (is_expression2 == TRUE) {
// GetNextToken();
int error2 = validate_expression(in_codegen_phase);
if (error2 == TRUE) {
return TRUE;
}
} else {
error_info.er = syntaxError;
error_info.tk = token7;
return TRUE;
}
}
}
// )
int close_paren_exists0 = consume_terminal(SYMBOL, (char *[]){")", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (close_paren_exists0 == FALSE) {
error_info.er = closeParenExpected;
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (flag == TRUE) {
TableRow *rz = find_symbol_in_table(class_table, temp_class_id0.lx);
class = find_symbol_in_table(get_program_table(), temp_class_id0.lx);
if (rz != NULL || (method_table != NULL && (rz = find_symbol_in_table(method_table, temp_class_id0.lx)) != NULL)) {
class = find_symbol_in_table(get_program_table(), rz->type);
}
int stack_idx = find_symbol_in_table(class->child_table, temp_id_exists1.lx)->child_table->symbol_kind_cnt[ARGS] - 1 + (find_symbol_in_table(class->child_table, temp_id_exists1.lx)->kind == METHOD);
print_method_invoke(vm_commands[CALL_CM], class->token.lx, temp_id_exists1.lx, stack_idx);
} else {
print_cmd(output_file, PUSH_CM, temp_class_id0);
}
}
return FALSE;
}
if (in_codegen_phase == TRUE) {
if (flag == TRUE) {
TableRow *r = find_symbol_in_table(class_table, temp_class_id0.lx);
class = find_symbol_in_table(get_program_table(), temp_class_id0.lx);
if (r != NULL || (method_table != NULL && (r = find_symbol_in_table(method_table, temp_class_id0.lx)) != NULL)) {
class = find_symbol_in_table(get_program_table(), r->type);
}
int stack_idx = find_symbol_in_table(class->child_table, temp_id_exists1.lx)->child_table->symbol_kind_cnt[ARGS] - 1 + (find_symbol_in_table(class->child_table, temp_id_exists1.lx)->kind == METHOD);
fprintf(output_file, "%s %s.%s %d\n", vm_commands[CALL_CM], class->token.lx, temp_id_exists1.lx, stack_idx);
} else {
print_cmd(output_file, PUSH_CM, temp_class_id0);
}
}
return FALSE;
}
// (expression)
if (token1.tp == SYMBOL && is_lexeme_acceptable(token1.lx, (char *[]){"(", NULL}) == TRUE) {
// (
int open_paren_exists1 = consume_terminal(SYMBOL, (char *[]){"(", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (open_paren_exists1 == FALSE) {
error_info.er = openParenExpected;
return TRUE;
}
Token token8 = PeekNextToken();
if (token8.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token8;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression3 = token8.tp == ID || token8.tp == STRING || token8.tp == INT || (token8.tp == RESWORD && is_lexeme_acceptable(token8.lx, factor_keywords)) || (token8.tp == SYMBOL && is_lexeme_acceptable(token8.lx, factor_keywords));
if (is_expression3 == TRUE) {
int error_in_expression3 = validate_expression(in_codegen_phase);
if (error_in_expression3) {
return TRUE;
}
} else {
error_info.er = syntaxError;
error_info.tk = token8;
return TRUE;
}
// )
int close_paren_exists1 = consume_terminal(SYMBOL, (char *[]){")", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (close_paren_exists1 == FALSE) {
error_info.er = closeParenExpected;
return TRUE;
}
return FALSE;
}
Token operand_keyword = PeekNextToken();
// true | false | null | this
int is_valid0 = consume_terminal(RESWORD, operand_keywords);
if (is_lexer_error) {
return TRUE;
} else if (is_valid0 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (strncmp(operand_keyword.lx, "true", 5) == 0) {
new_fprintf(vm_commands[PUSH_CM], memory_segments[CONST_SEG], 0);
fprintf(output_file, "%s\n", vm_commands[NOT_CM]);
} else if (!strncmp(operand_keyword.lx, "this", 5)) {
new_fprintf(vm_commands[PUSH_CM], memory_segments[POINTER_SEG], 0);
} else {
new_fprintf(vm_commands[PUSH_CM], memory_segments[CONST_SEG], 0);
}
}
return FALSE;
}
int validate_factor(int in_codegen_phase) {
Token token9 = PeekNextToken();
if (token9.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token9;
is_lexer_error = TRUE;
return TRUE;
}
if (token9.tp == SYMBOL && is_lexeme_acceptable(token9.lx, (char *[]){"-", "~", NULL})) {
int is_valid1 = consume_terminal(SYMBOL, (char *[]){"-", "~", NULL});
if (is_lexer_error) {
return TRUE;
} else if (is_valid1 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
Token token10 = PeekNextToken();
if (token10.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token10;
is_lexer_error = TRUE;
return TRUE;
}
if ((token10.tp == INT || token10.tp == ID || token10.tp == STRING) ||
(token10.tp == SYMBOL && is_lexeme_acceptable(token10.lx, (char *[]){"(", NULL})) ||
(token10.tp == RESWORD && is_lexeme_acceptable(token10.lx, operand_keywords))) {
int error_in_operand = validate_operand(in_codegen_phase);
if (error_in_operand == TRUE) {
return TRUE;
}
}
if (in_codegen_phase == TRUE) {
if (strncmp(token9.lx, "-", 2) == 0) {
fprintf(output_file, "%s\n", vm_commands[NEG_CM]);
} else {
fprintf(output_file, "%s\n", vm_commands[NOT_CM]);
}
}
} else if ((token9.tp == INT || token9.tp == ID || token9.tp == STRING) ||
(token9.tp == SYMBOL && is_lexeme_acceptable(token9.lx, (char *[]){"(", NULL})) ||
(token9.tp == RESWORD && is_lexeme_acceptable(token9.lx, operand_keywords))) {
int error_in_operand = validate_operand(in_codegen_phase);
if (error_in_operand == TRUE) {
return TRUE;
}
}
return FALSE;
}
int validate_term(int in_codegen_phase) {
Token token11 = PeekNextToken();
if (token11.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token11;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression4 = token11.tp == ID || token11.tp == STRING || token11.tp == INT || (token11.tp == RESWORD && is_lexeme_acceptable(token11.lx, factor_keywords)) || (token11.tp == SYMBOL && is_lexeme_acceptable(token11.lx, factor_keywords));
if (is_expression4 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token11;
return TRUE;
}
int error_exists_in_factor4 = validate_factor(in_codegen_phase);
if (error_exists_in_factor4 == TRUE) {
return TRUE;
}
while (TRUE) {
Token token12 = PeekNextToken();
if (token12.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token12;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token12.lx, (char *[]){"*", "/", NULL}) == FALSE) {
break;
}
int is_valid_terminal2 = consume_terminal(SYMBOL, (char *[]){"*", "/", NULL});
if (is_lexer_error) {
return TRUE;
} else if (is_valid_terminal2 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
Token token13 = PeekNextToken();
if (token13.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token13;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression5 = token13.tp == ID || token13.tp == STRING || token13.tp == INT || (token13.tp == RESWORD && is_lexeme_acceptable(token13.lx, factor_keywords)) || (token13.tp == SYMBOL && is_lexeme_acceptable(token13.lx, factor_keywords));
if (is_expression5 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token13;
return TRUE;
}
int error_in_factor5 = validate_factor(in_codegen_phase);
if (error_in_factor5 == TRUE) {
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (strncmp(token12.lx, "*", 2) == 0) {
print_method_invoke(vm_commands[CALL_CM], "Math", "multiply", 2);
} else {
print_method_invoke(vm_commands[CALL_CM], "Math", "divide", 2);
}
}
}
return FALSE;
}
int validate_arithmetic_expression(int in_codegen_phase) {
Token token14 = PeekNextToken();
if (token14.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token14;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression6 = token14.tp == ID || token14.tp == STRING || token14.tp == INT || (token14.tp == RESWORD && is_lexeme_acceptable(token14.lx, factor_keywords)) || (token14.tp == SYMBOL && is_lexeme_acceptable(token14.lx, factor_keywords));
if (is_expression6 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token14;
return TRUE;
}
int error_exists_in_term6 = validate_term(in_codegen_phase);
if (error_exists_in_term6 == TRUE) {
return TRUE;
}
while (TRUE) {
Token token15 = PeekNextToken();
if (token15.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token15;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token15.lx, (char *[]){"+", "-", NULL}) == FALSE) {
break;
}
int is_valid_terminal3 = consume_terminal(SYMBOL, (char *[]){"+", "-", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (is_valid_terminal3 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
Token token16 = PeekNextToken();
if (token16.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token16;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression7 = token16.tp == ID || token16.tp == STRING || token16.tp == INT || (token16.tp == RESWORD && is_lexeme_acceptable(token16.lx, factor_keywords)) || (token16.tp == SYMBOL && is_lexeme_acceptable(token16.lx, factor_keywords));
if (is_expression7 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token16;
return TRUE;
}
int error_in_term7 = validate_term(in_codegen_phase);
if (error_in_term7) {
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (strncmp(token15.lx, "+", 2) == 0) {
fprintf(output_file, "%s\n", vm_commands[ADD_CM]);
} else {
fprintf(output_file, "%s\n", vm_commands[SUB_CM]);
}
}
}
return FALSE;
}
int validate_relational_expression(int in_codegen_phase) {
Token token17 = PeekNextToken();
if (token17.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token17;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression8 = token17.tp == ID || token17.tp == STRING || token17.tp == INT || (token17.tp == RESWORD && is_lexeme_acceptable(token17.lx, factor_keywords)) || (token17.tp == SYMBOL && is_lexeme_acceptable(token17.lx, factor_keywords));
if (is_expression8 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token17;
return TRUE;
}
int error_exists_in_arithmetic_expression8 = validate_arithmetic_expression(in_codegen_phase);
if (error_exists_in_arithmetic_expression8 == TRUE) {
return TRUE;
}
while (TRUE) {
Token token18 = PeekNextToken();
if (token18.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token18;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token18.lx, (char *[]){"=", ">", "<", NULL}) == FALSE) {
break;
}
int is_valid_terminal4 = consume_terminal(SYMBOL, (char *[]){"=", "<", ">", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (is_valid_terminal4 == FALSE) {
error_info.er = equalExpected;
return TRUE;
}
Token token19 = PeekNextToken();
if (token19.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token19;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression9 = token19.tp == ID || token19.tp == STRING || token19.tp == INT || (token19.tp == RESWORD && is_lexeme_acceptable(token19.lx, factor_keywords)) || (token19.tp == SYMBOL && is_lexeme_acceptable(token19.lx, factor_keywords));
if (is_expression9 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token19;
return TRUE;
}
int error_in_arithmetic_expression9 = validate_arithmetic_expression(in_codegen_phase);
if (error_in_arithmetic_expression9) {
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (strncmp(token18.lx, "=", 2) == 0) {
fprintf(output_file, "%s\n", vm_commands[EQ_CM]);
} else if (strncmp(token18.lx, ">", 2) == 0) {
fprintf(output_file, "%s\n", vm_commands[GT_CM]);
} else {
fprintf(output_file, "%s\n", vm_commands[LT_CM]);
}
}
}
return FALSE;
}
int validate_expression(int in_codegen_phase) {
Token token20 = PeekNextToken();
if (token20.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token20;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression10 = token20.tp == ID || token20.tp == STRING || token20.tp == INT || (token20.tp == RESWORD && is_lexeme_acceptable(token20.lx, factor_keywords)) || (token20.tp == SYMBOL && is_lexeme_acceptable(token20.lx, factor_keywords));
if (is_expression10 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token20;
return TRUE;
}
int error_exists_in_relational_expression10 = validate_relational_expression(in_codegen_phase);
if (error_exists_in_relational_expression10) {
return TRUE;
}
while (TRUE) {
Token token21 = PeekNextToken();
if (token21.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token21;
is_lexer_error = TRUE;
return TRUE;
}
if (is_lexeme_acceptable(token21.lx, (char *[]){"&", "|", NULL}) == FALSE) {
break;
}
int is_valid_terminal5 = consume_terminal(SYMBOL, (char *[]){"&", "|", NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (is_valid_terminal5 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
Token token22 = PeekNextToken();
if (token22.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token22;
is_lexer_error = TRUE;
return TRUE;
}
int is_expression11 = token22.tp == ID || token22.tp == STRING || token22.tp == INT || (token22.tp == RESWORD && is_lexeme_acceptable(token22.lx, factor_keywords)) || (token22.tp == SYMBOL && is_lexeme_acceptable(token22.lx, factor_keywords));
if (is_expression11 == FALSE) {
error_info.er = syntaxError;
error_info.tk = token22;
return TRUE;
}
int error_in_relational_expression11 = validate_relational_expression(in_codegen_phase);
if (error_in_relational_expression11 == TRUE) {
return TRUE;
}
if (in_codegen_phase == TRUE) {
if (strncmp(token21.lx, "&", 2) == 0) {
fprintf(output_file, "%s\n", vm_commands[AND_CM]);
} else {
fprintf(output_file, "%s\n", vm_commands[OR_CM]);
}
}
}
return FALSE;
}
int validate_class_var_declaration(int in_codegen_phase) {
Token temp_static_or_field = PeekNextToken();
// check "static" or "field" keyword
int static_or_field_keyword_exists = consume_terminal(RESWORD, class_var_declaration_keywords);
if (is_lexer_error) {
return TRUE;
} else if (static_or_field_keyword_exists == FALSE) {
error_info.er = classVarErr;
return TRUE;
}
// check type
Token token23 = PeekNextToken();
if (token23.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token23;
is_lexer_error = TRUE;
return TRUE;
}
int is_type_declaration0 = token23.tp == ID || (token23.tp == RESWORD && is_lexeme_acceptable(token23.lx, type_declaration_keywords));
if (is_type_declaration0 == TRUE) {
if (in_codegen_phase == FALSE && token23.tp == ID) {
if (find_symbol_in_table(get_program_table(), token23.lx) == NULL) {
add_undeclare(token23, "");
}
}
GetNextToken();
} else {
error_info.er = illegalType;
error_info.tk = token23;
return TRUE;
}
// check identifier
Token temp_class_var = PeekNextToken();
int identifier_exists0 = consume_terminal(ID, (char *[]){NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (identifier_exists0 == FALSE) {
error_info.er = idExpected;
return TRUE;
}
SymbolKind class_var_kind;
if (strncmp("field", temp_static_or_field.lx, LEXEME_LEN) == 0) {
class_var_kind = FIELD;
} else {
class_var_kind = STATIC;
}
if (in_codegen_phase == FALSE) {
int duplicate_class_var_exists = insert_symbol_into_table(class_table, NULL, class_var_kind, temp_class_var, token23.lx);
if (duplicate_class_var_exists == TRUE) {
error_info.er = redecIdentifier;
error_info.tk = temp_class_var;
return TRUE;
}
}
// {, identifier}
while (TRUE) {
Token token24 = PeekNextToken();
if (token24.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token24;
is_lexer_error = TRUE;
}
if (is_lexeme_acceptable(token24.lx, (char *[]){",", NULL}) == FALSE) {
break;
}
int comma_exists0 = consume_terminal(SYMBOL, (char *[]){",", NULL});
if (is_lexer_error) {
return TRUE;
} else if (comma_exists0 == FALSE) {
error_info.er = syntaxError;
return TRUE;
}
Token temp_id_exists3 = PeekNextToken();
int id_exists3 = consume_terminal(ID, (char *[]){NULL});
if (is_lexer_error) {
return TRUE;
} else if (id_exists3 == FALSE) {
error_info.er = idExpected;
return TRUE;
}
if (in_codegen_phase == FALSE) {
int duplicate_temp_id3_exists = insert_symbol_into_table(class_table, NULL, class_var_kind, temp_id_exists3, token23.lx);
if (duplicate_temp_id3_exists == TRUE) {
error_info.er = redecIdentifier;
error_info.tk = temp_id_exists3;
}
}
}
// ;
int semicolon_exists0 = consume_terminal(SYMBOL, (char *[]){";", NULL});
if (is_lexer_error) {
return TRUE;
} else if (semicolon_exists0 == FALSE) {
error_info.er = semicolonExpected;
return TRUE;
}
return FALSE;
}
int validate_subroutine_params(int in_codegen_phase) {
Token token25 = PeekNextToken();
if (token25.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token25;
is_lexer_error = TRUE;
return TRUE;
}
int is_type_declaration1 = token25.tp == ID || (token25.tp == RESWORD && is_lexeme_acceptable(token25.lx, type_declaration_keywords));
if (is_type_declaration1) {
if (in_codegen_phase == FALSE && token25.tp == ID) {
if (find_symbol_in_table(get_program_table(), token25.lx) == NULL) {
add_undeclare(token25, "");
}
}
GetNextToken();
} else {
error_info.er = illegalType;
error_info.tk = token25;
return TRUE;
}
Token temp_method_param1 = PeekNextToken();
int id_exists4 = consume_terminal(ID, (char *[]){NULL});
if (is_lexer_error == TRUE) {
return TRUE;
} else if (id_exists4 == FALSE) {
error_info.er = idExpected;
return TRUE;
}
if (in_codegen_phase == FALSE) {
int duplicate_temp_method_param1_exists = insert_symbol_into_table(method_table, NULL, ARGS, temp_method_param1, token25.lx);
if (duplicate_temp_method_param1_exists == TRUE) {
error_info.er = redecIdentifier;
error_info.tk = temp_method_param1;
return TRUE;
}
}
while (TRUE) {
Token token26 = PeekNextToken();
if (token26.tp == ERR) {
error_info.er = lexerErr;
error_info.tk = token26;
is_lexer_error = TRUE;
return TRUE;
}