📄 compiler.java
字号:
//row--;
int temp = i;
i = find(i,content);
row += (i - temp);
state = 0;
}
break;
case 12://标志符是 #
int id1 = i;
int id2, id3;
String id = "";
while(c != '<'){
id += c;
i++;
c = content.charAt(i);
}
id2 = i + 1;
if(id.trim().equals("include")){
programStr.add("#include<");
styleStr.add("#include<");
while(c != '>' && ( c != '\n')){
i++;
c = content.charAt(i);
}
id3 = i;
if(c == '>'){
error_text.append("info: 头文件引入文法 \n");
programStr.add(content.substring(id2, id3));
styleStr.add("C");
programStr.add(">");
styleStr.add(">");
}
}else
error_text.appendText("error: " + "line " + line + ", row " + row + " 语法错误\n");
state = 0;
break;
case 13://检测指数表示方式
if(c == '+' || c == '-' || isDigit(c)){
i++;
c = content.charAt(i);
while(isDigit(c)){
i++;
c = content.charAt(i);
}
if(isLetter(c) || c == '.'){
error_text.appendText("error； line " + line + " row " + row + " 指数格式错误！\n");
state = 0;
int temp = i;
i = find(i,content);
row += (i - temp);
}else{
end = i;
programStr.add(content.substring(begin, end));
styleStr.add("K");
i--;
error_text.appendText("info: 指数 " + content.substring(begin, end) + '\n');
}
state = 0;
}
break;
case 14:// 逻辑运算发 &&
if(c == '&'){
error_text.appendText("info: 逻辑AND运算符 '&&' \n");
/***new**/
programStr.add("&&");
styleStr.add("&&");
}
else{
i--;
error_text.appendText("info: & 不明运算符. \n");
}
state = 0;
break;
case 15:// 逻辑运算发 ||
if(c == '|'){
error_text.appendText("info: 逻辑OR运算符 '||' \n");
/***new**/
programStr.add("||");
styleStr.add("||");
}
else{
i--;
error_text.appendText("info: '|' 不明运算符. \n");
}
state = 0;
break;
case 16:
error_text.appendText("info: 引号 " + '"' + '\n');
/***new**/
programStr.add('"'+"");
styleStr.add('"'+"");
int id_1 = i;
i++;
while(content.charAt(i)!='"')
i++;
int id_2 = i;
String str =content.substring(id_1, id_2);
programStr.add(str);
styleStr.add("Q");
error_text.appendText("字符串： " + str + '\n');
programStr.add('"'+"");
styleStr.add('"'+"");
error_text.appendText("info: 引号 " + '"' + '\n');
//i--;
state = 0;
break;
}
}
}
error_text.appendText("Have checked lexical! \n");
test();
}
boolean isLetter(char c){
if((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_')
return true;
return false;
}
boolean isDigit(char c){
if(c >= '0' && c <= '9') return true;
return false;
}
boolean isKey(String str){
if(str.equals("int") || str.equals("real") || str.equals("for") || str.equals("while") || str.equals("do") || str.equals("begin") || str.equals("end") || str.equals("if") || str.equals("then")||
str.equals("AND") || str.equals("OR") || str.equals("NOT") || str.equals("repeat") || str.equals("until") || str.equals("read") || str.equals("write") || str.equals("return") || str.equals("true")
|| str.equals("false") || str.equals("boolean") || str.equals("program") || str.equals("const") || str.equals("to"))
return true;
return false;
}
int find(int begin, String str){//寻找分隔符空格、括号、回车等。
if(begin >= str.length())
return str.length();
for(int i = begin; i < str.length(); i++){
char c = str.charAt(i);
if(c == '\n' || c == ',' || c == ' ' || c == '\t' || c == '{' || c =='}' || c == '(' || c == ')' || c == ';' || c == '=' || c == '+'|| c == '-' || c == '*' || c == '/')
return i - 1;
}
return str.length();
}
/*
* 测试styleStr programStr[]内容是否符合要求！
* */
void test(){
String str = "";
for(int i = 0; i < styleStr.size(); i++)
str += '{' + (String)(programStr.get(i)) + ", " + (String)(styleStr.get(i)) + '}';
System.out.println(str);
}
/*********************************/
/* 对经过语法分析的程序进行语法分析 */
/*********************************/
void check_syntax(){
styleStr.add("@");//添加结束条件
if(styleStr.size() == 1){
error_text.appendText("空栈！无内容！");
return;
}
int index = 0;
int state = 0;
stateStack.add(""+state);
//String str = ((String)styleStack.get(index));
boolean jmp = true;
while(index < styleStr.size()){
/********************************************/
/****************输出本时刻状态信息**************/
/********************************************/
String str = ((String)styleStr.get(index));
error_text.appendText("State : " + state + " ");
for(int i = 0; i < styleStack.size(); i++)
error_text.appendText((String)styleStack.get(i)+" ");
error_text.appendText(" ");
for(int i = 0; i < stateStack.size(); i++)
error_text.appendText((String)stateStack.get(i)+" ");
error_text.appendText("\n");
/***************************************/
switch( state ){
case -1:
error_text.appendText(("Error info: case -1 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
break;
case 0:
if(str.equals("#include<")){
state = 3;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
error_text.appendText(("Error info: case 0 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 1:
if(styleStr.get(index).equals("@")){
error_text.appendText("Syntax all right!" + '\n');
index++;
}else{
error_text.appendText(("Error info: case 1" + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
}
jmp = false;
break;
case 2:
if(styleStr.get(index).equals("type")){
state = 5;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else {
error_text.appendText(("Error info: case 2 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 3:
if(styleStr.get(index).equals("C")){
state = 6;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
error_text.appendText(("Error info: case 3 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 4:
if(styleStr.get(index).equals("@")){
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.add("S");
stateStack.add(""+gotoState(Integer.parseInt((String)stateStack.get(stateStack.size() - 1)) ,"S"));
state = Integer.parseInt(((String)stateStack.get(stateStack.size() - 1)));
}else{
error_text.appendText(("Error info: case 4 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 5:
if(styleStr.get(index).equals("C")){
state = 7;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
error_text.appendText(("Error info: case 5" + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 6:
if(styleStr.get(index).equals(">")){
state = 8;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
error_text.appendText(("Error info: case 6 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 7:
if(styleStr.get(index).equals("(")){
state = 9;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
error_text.appendText(("Error info: case 7 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 8:
if(styleStr.get(index).equals("type")){
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.add("H");
stateStack.add("" + gotoState(Integer.parseInt((String)stateStack.get(stateStack.size() - 1)) ,"H"));
state = Integer.parseInt(((String)stateStack.get(stateStack.size() - 1)));
}else if(styleStr.get(index).equals("#include<")){
state = 3;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}
else{
error_text.appendText(("Error info: case 8 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 9:
if(styleStr.get(index).equals("Z")){
state = 11;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else if(styleStr.get(index).equals("type")){
state = 12;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else if(styleStr.get(index).equals(")")){
/****************************/
/**********Z --> 空的规约 *****/
/****************************/
styleStack.add("Z");
stateStack.add(""+gotoState(Integer.parseInt((String)stateStack.get(stateStack.size() - 1)) ,"Z"));
state = Integer.parseInt(((String)stateStack.get(stateStack.size() - 1)));
}else{
error_text.appendText(("Error info: case 9 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
jmp = false;
}
break;
case 10:
if(styleStr.get(index).equals("type")){//规约
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.remove(styleStack.size() - 1);
stateStack.remove(stateStack.size() - 1);
styleStack.add("H");
stateStack.add(""+gotoState(Integer.parseInt((String)stateStack.get(stateStack.size() - 1)) ,"H"));
state = Integer.parseInt(((String)stateStack.get(stateStack.size() - 1)));
}else{
jmp = false;
error_text.appendText(("Error info: case 10" + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
}
break;
case 11:
if(styleStr.get(index).equals(")")){
state = 13;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
jmp = false;
error_text.appendText(("Error info: case 11 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
}
break;
case 12:
if(styleStr.get(index).equals("C")){
state = 14;
styleStack.add(styleStr.get(index));
stateStack.add(""+state);
index++;
}else{
jmp = false;
error_text.appendText(("Error info: case 12 " + stateStack.get(stateStack.size() - 1) + " " + styleStack.get(styleStack.size() - 1)));
}
break;
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