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Copy pathSyntaxAnalyzer.java
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7482 lines (7259 loc) · 162 KB
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import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class SyntaxAnalyzer {
public static Tokenizer tokenizer = new Tokenizer();
public static boolean CompilationUnit(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (PackageDeclaration(tok)) {
tok = tokenizer.getNextToken();
} else {
}
if (ImportDeclarations(tok)) {
tok = tokenizer.getNextToken();
} else {
}
if (TypeDeclarations(tok)) {
System.out.println("Parsing Sucessfull !!!");
tok = tokenizer.getNextToken();
} else {
System.out.println("Failed at line: "
+ tokenizer.getToken().getLine() + " near >>> "
+ tokenizer.getToken().value);
}
return true;
} else {
return false;
}
}
public static boolean PackageDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("package"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (PackageName(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (tok.value.equals((";"))) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ImportDeclarations(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ImportDeclaration(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ImportDeclarations1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ImportDeclarations1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (ImportDeclarations(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ImportDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (SingleTypeImportDeclaration(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (TypeImportOnDemandDeclaration(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean SingleTypeImportDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("import"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (TypeName(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (tok.value.equals((";"))) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean TypeImportOnDemandDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("import"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (PackageName(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (tok.value.equals(("."))) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (tok.value.equals(("*"))) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (tok.value.equals((";"))) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean TypeDeclarations(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (TypeDeclaration(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (TypeDeclarations1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean TypeDeclarations1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (TypeDeclarations(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean TypeDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (ClassDeclaration(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (InterfaceDeclaration(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (tok.value.equals(";")) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ClassDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ClassModifiers(tok)) {
tok = tokenizer.getNextToken();
}
if (tok.value.equals(("class"))) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (Identifier(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (Super(tok)) {
tok = tokenizer.getNextToken();
}
if (Interfaces(tok)) {
tok = tokenizer.getNextToken();
}
if (ClassBody(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ClassModifiers(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ClassModifier(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ClassModifiers1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ClassModifiers1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (ClassModifiers(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ClassModifier(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
String tokenValue = tok.value;
if ("public".equals(tokenValue)) {
return true;
}
if ("abstract".equals(tokenValue)) {
return true;
}
if ("final".equals(tokenValue)) {
return true;
}
if ("static".equals(tokenValue)) {
return true;
}
return false;
} else {
return false;
}
}
public static boolean Super(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("extends"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ClassType(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean Interfaces(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("implements"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (InterfaceTypeList(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean InterfaceTypeList(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (InterfaceType(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (InterfaceTypeList1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean InterfaceTypeList1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (tok.value.equals(",")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (InterfaceTypeList(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ClassBody(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("{"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ClassBodyDeclarations(tok)) {
tok = tokenizer.getNextToken();
}
if (tok.value.equals(("}"))) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ClassBodyDeclarations(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ClassBodyDeclaration(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ClassBodyDeclarations1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ClassBodyDeclarations1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (ClassBodyDeclarations(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ClassBodyDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (ClassMemberDeclaration(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (StaticInitializer(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (ConstructorDeclaration(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ClassMemberDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (FieldDeclaration(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (MethodDeclaration(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (ClassDeclaration(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean StaticInitializer(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("static"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (Block(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ConstructorDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ConstructorModifiers(tok)) {
tok = tokenizer.getNextToken();
}
if (ConstructorDeclarator(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (Throws(tok)) {
tok = tokenizer.getNextToken();
}
if (ConstructorBody(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ConstructorModifiers(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ConstructorModifier(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ConstructorModifiers1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ConstructorModifiers1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (ConstructorModifiers(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ConstructorModifier(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
String tokenValue = tok.value;
if ("public".equals(tokenValue)) {
return true;
}
if ("protected".equals(tokenValue)) {
return true;
}
if ("private".equals(tokenValue)) {
return true;
}
return false;
} else {
return false;
}
}
public static boolean ConstructorDeclarator(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (SimpleTypeName(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (tok.value.equals(("("))) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (FormalParameterList(tok)) {
tok = tokenizer.getNextToken();
}
if (tok.value.equals((")"))) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean FormalParameterList(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (FormalParameter(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (FormalParameterList1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean FormalParameterList1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (tok.value.equals(",")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (FormalParameterList(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean FormalParameter(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (Type(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (VariableDeclaratorId(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean Throws(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("throws"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ClassTypeList(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ClassTypeList(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (ClassType(tok)) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ClassTypeList1(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ClassTypeList1(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (tok.value.equals(",")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (ClassTypeList(tok)) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (Empty(tok)) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean ConstructorBody(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (tok.value.equals(("{"))) {
tok = tokenizer.getNextToken();
} else {
return false;
}
if (ExplicitConstructorInvocation(tok)) {
tok = tokenizer.getNextToken();
}
if (BlockStatements(tok)) {
tok = tokenizer.getNextToken();
}
if (tok.value.equals(("}"))) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
}
public static boolean ExplicitConstructorInvocation(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
boolean noSkip = true;
if (noSkip) {
if (tok.value.equals("this")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (tok.value.equals("(")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (ArgumentList(tok)) {
tok = tokenizer.getNextToken();
}
}
if (noSkip) {
if (tok.value.equals(")")) {
return true;
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
}
} else {
noSkip = true;
}
if (noSkip) {
if (tok.value.equals("super")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (tok.value.equals("(")) {
tok = tokenizer.getNextToken();
} else {
tokenizer.pushBack(tokenizer.index - oldTokenCount);
tok = tokenizer.getCurrentToken();
noSkip = false;
}
}
if (noSkip) {
if (ArgumentList(tok)) {
tok = tokenizer.getNextToken();
}
}
if (noSkip) {
if (tok.value.equals(")")) {
return true;
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
} else {
return false;
}
} else {
return false;
}
}
public static boolean FieldDeclaration(Token tok) {
int oldTokenCount = tokenizer.index;
if (tok != null) {
if (FieldModifiers(tok)) {
tok = tokenizer.getNextToken();
}
if (Type(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (VariableDeclarators(tok)) {
tok = tokenizer.getNextToken();
} else {
return tokenizer.pushBack(tokenizer.index - oldTokenCount);
}
if (tok.value.equals((";"))) {
return true;