/**
* Create block comment from token.
*
* @param token Token object.
* @return DetailAST with BLOCK_COMMENT type.
*/
private static DetailAST createBlockCommentNode(Token token) {
final DetailAST blockComment = new DetailAST();
blockComment.initialize(TokenTypes.BLOCK_COMMENT_BEGIN, "/*");
// column counting begins from 0
blockComment.setColumnNo(token.getColumn() - 1);
blockComment.setLineNo(token.getLine());
final DetailAST blockCommentContent = new DetailAST();
blockCommentContent.initialize(token);
blockCommentContent.setType(TokenTypes.COMMENT_CONTENT);
// column counting begins from 0
// plus length of '/*'
blockCommentContent.setColumnNo(token.getColumn() - 1 + 2);
blockCommentContent.setLineNo(token.getLine());
blockCommentContent.setText(token.getText());
final DetailAST blockCommentClose = new DetailAST();
blockCommentClose.initialize(TokenTypes.BLOCK_COMMENT_END, "*/");
final Entry<Integer, Integer> linesColumns =
countLinesColumns(token.getText(), token.getLine(), token.getColumn());
blockCommentClose.setLineNo(linesColumns.getKey());
blockCommentClose.setColumnNo(linesColumns.getValue());
blockComment.addChild(blockCommentContent);
blockComment.addChild(blockCommentClose);
return blockComment;
}
/**
* Create single-line comment from token.
*
* @param token Token object.
* @return DetailAST with SINGLE_LINE_COMMENT type.
*/
private static DetailAST createSlCommentNode(Token token) {
final DetailAST slComment = new DetailAST();
slComment.setType(TokenTypes.SINGLE_LINE_COMMENT);
slComment.setText("//");
// column counting begins from 0
slComment.setColumnNo(token.getColumn() - 1);
slComment.setLineNo(token.getLine());
final DetailAST slCommentContent = new DetailAST();
slCommentContent.initialize(token);
slCommentContent.setType(TokenTypes.COMMENT_CONTENT);
// column counting begins from 0
// plus length of '//'
slCommentContent.setColumnNo(token.getColumn() - 1 + 2);
slCommentContent.setLineNo(token.getLine());
slCommentContent.setText(token.getText());
slComment.addChild(slCommentContent);
return slComment;
}
public static void main(String[] args) {
try {
CLI.parse(args, new String[0]);
InputStream inputStream =
args.length == 0 ? System.in : new java.io.FileInputStream(CLI.infile);
if (CLI.target == CLI.SCAN) {
DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
Token token;
boolean done = false;
while (!done) {
try {
for (token = lexer.nextToken();
token.getType() != DecafParserTokenTypes.EOF;
token = lexer.nextToken()) {
String type = "";
String text = token.getText();
switch (token.getType()) {
case DecafScannerTokenTypes.ID:
type = " IDENTIFIER";
break;
}
System.out.println(token.getLine() + type + " " + text);
}
done = true;
} catch (Exception e) {
// print the error:
System.out.println(CLI.infile + " " + e);
lexer.consume();
}
}
} else if (CLI.target == CLI.PARSE || CLI.target == CLI.DEFAULT) {
DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
DecafParser parser = new DecafParser(lexer);
parser.program();
}
} catch (Exception e) {
// print the error:
System.out.println(CLI.infile + " " + e);
}
}
@Override
public void initialize(Token tok) {
super.initialize(tok);
lineNo = tok.getLine();
columnNo = tok.getColumn() - 1; // expect columns to start @ 0
}
public static void main(String[] args) {
try {
CLI.parse(args, new String[0]);
InputStream inputStream =
args.length == 0 ? System.in : new java.io.FileInputStream(CLI.infile);
if (CLI.target == CLI.SCAN) {
DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
Token token;
boolean done = false;
while (!done) {
try {
for (token = lexer.nextToken();
token.getType() != DecafParserTokenTypes.EOF;
token = lexer.nextToken()) {
String type = "";
String text = token.getText();
switch (token.getType()) {
case DecafScannerTokenTypes.ID:
type = " IDENTIFIER";
break;
case DecafScannerTokenTypes.CHAR:
type = " CHARLITERAL";
break;
case DecafScannerTokenTypes.TRUE:
case DecafScannerTokenTypes.FALSE:
type = " BOOLEANLITERAL";
break;
case DecafScannerTokenTypes.HEX:
case DecafScannerTokenTypes.DECIMAL:
type = " INTLITERAL";
break;
case DecafScannerTokenTypes.STRING:
type = " STRINGLITERAL";
break;
}
System.out.println(token.getLine() + type + " " + text);
}
done = true;
} catch (Exception e) {
// print the error:
System.out.println(CLI.infile + " " + e);
lexer.consume();
}
}
} else if (CLI.target == CLI.PARSE || CLI.target == CLI.DEFAULT) {
DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
DecafParser parser = new DecafParser(lexer, CLI.debug);
// DecafParser parser = new DecafParser (lexer);
parser.program();
} else if (CLI.target == CLI.INTER) {
DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
DecafParser parser = new DecafParser(lexer, CLI.debug);
parser.program();
IrNode irRoot = parser.getIrTree();
SemanticChecker checker = new SemanticChecker(CLI.infile, CLI.debug);
if (CLI.debug) System.out.println("--- checking -----");
checker.checkProgram((IrClassDecl) irRoot);
} else if (CLI.target == CLI.LOWIR) {
DecafScanner lexer = new DecafScanner(new DataInputStream(inputStream));
DecafParser parser = new DecafParser(lexer, CLI.debug);
parser.program();
IrNode irRoot = parser.getIrTree();
SemanticChecker checker = new SemanticChecker(CLI.infile, CLI.debug);
if (CLI.debug) System.out.println("--- checking -----");
checker.checkProgram((IrClassDecl) irRoot);
CodeGen codegen = new CodeGen(irRoot, CLI.debug);
codegen.genLowIr();
codegen.printLowIr();
}
} catch (Exception e) {
// print the error:
System.out.println(CLI.infile + " " + e);
}
}