Examples with CharStream org.antlr.v4.runtime.CharStream used on opensource projects

Example 66 with CharStream

use of org.antlr.v4.runtime.CharStream in project claw-compiler by C2SM-RCM.

the class IgnoreDirectiveRecognizer method parse.

public String parse(InputStream input) throws Exception {
    lexer.reset();
    parser.reset();
    lexerErrorListener.reset();
    parserErrorListener.reset();
    CharStream chrStrm = CharStreams.fromStream(input, StandardCharsets.US_ASCII);
    lexer.setInputStream(chrStrm);
    CommonTokenStream tokStrm = new CommonTokenStream(lexer);
    parser.setInputStream(tokStrm);
    parser.setBuildParseTree(true);
    ParseTree tree = null;
    try {
        tree = parser.root();
    } catch (CancellationException e) {
    }
    if (lexerErrorListener.error() != null) {
        throw lexerErrorListener.error();
    }
    if (parserErrorListener.error() != null) {
        throw parserErrorListener.error();
    }
    ParseTreeWalker walker = new ParseTreeWalker();
    Listener listener = new Listener();
    try {
        walker.walk(listener, tree);
    } catch (CancellationException e) {
    }
    if (listener.getError() != null) {
        throw listener.getError();
    }
    return listener.getContents();
}

Example 67 with CharStream

use of org.antlr.v4.runtime.CharStream in project claw-compiler by C2SM-RCM.

the class RemoveIgnoreDirectiveFilter method run.

public void run(InputStream input, OutputStream output) throws Exception {
    lexer.reset();
    parser.reset();
    lexerErrorListener.reset();
    parserErrorListener.reset();
    CharStream chrStrm = CharStreams.fromStream(input, StandardCharsets.US_ASCII);
    lexer.setInputStream(chrStrm);
    CommonTokenStream tokStrm = new CommonTokenStream(lexer);
    parser.setInputStream(tokStrm);
    parser.setBuildParseTree(true);
    ParseTree tree = null;
    try {
        tree = parser.root();
    } catch (CancellationException e) {
    }
    if (lexerErrorListener.error() != null) {
        throw lexerErrorListener.error();
    }
    if (parserErrorListener.error() != null) {
        throw parserErrorListener.error();
    }
    if (tree == null) {
        throw new Exception("Antlr-generated parser failed to accept input");
    }
    ParseTreeWalker walker = new ParseTreeWalker();
    Listener listener = new Listener(output, directiveRecognizer);
    try {
        walker.walk(listener, tree);
    } catch (CancellationException e) {
    }
    if (listener.getError() != null) {
        throw listener.getError();
    }
}

Example 68 with CharStream

use of org.antlr.v4.runtime.CharStream in project claw-compiler by C2SM-RCM.

the class AddIgnoreDirectiveFilter method run.

public void run(InputStream input, OutputStream output) throws Exception {
    lexer.reset();
    parser.reset();
    lexerErrorListener.reset();
    parserErrorListener.reset();
    CharStream chrStrm = CharStreams.fromStream(input, StandardCharsets.US_ASCII);
    lexer.setInputStream(chrStrm);
    CommonTokenStream tokStrm = new CommonTokenStream(lexer);
    parser.setInputStream(tokStrm);
    parser.setBuildParseTree(true);
    ParseTree tree = null;
    try {
        tree = parser.root();
    } catch (CancellationException e) {
    }
    if (lexerErrorListener.error() != null) {
        throw lexerErrorListener.error();
    }
    if (parserErrorListener.error() != null) {
        throw parserErrorListener.error();
    }
    if (tree == null) {
        throw new Exception("Antlr-generated parser failed to accept input");
    }
    ParseTreeWalker walker = new ParseTreeWalker();
    Listener listener = new Listener(output);
    try {
        walker.walk(listener, tree);
    } catch (CancellationException e) {
    }
    if (listener.getError() != null) {
        throw listener.getError();
    }
    if (listener.getIgnoreBlockStartLineNum() != null) {
        final int lineNum = listener.getIgnoreBlockStartLineNum();
        throw new Exception(sprintf("Unclosed ignore directive at line %s", lineNum));
    }
}

Example 69 with CharStream

use of org.antlr.v4.runtime.CharStream in project claw-compiler by C2SM-RCM.

the class FortranCLAWScannerTest method toTokenStream.

private CommonTokenStream toTokenStream(String str) throws IOException {
    CharStream chrStrm = toCharStream(str);
    lexer.reset();
    lexer.setInputStream(chrStrm);
    CommonTokenStream tokStrm = new CommonTokenStream(lexer);
    return tokStrm;
}

Example 70 with CharStream

use of org.antlr.v4.runtime.CharStream in project claw-compiler by C2SM-RCM.

the class FortranIncludeStatementRecognizer method run.

public String run(String input) throws IOException, Exception {
    lexer.reset();
    parser.reset();
    lexerErrorListener.reset();
    parserErrorListener.reset();
    CharStream chrStrm = toCharStream(input);
    lexer.setInputStream(chrStrm);
    CommonTokenStream tokStrm = new CommonTokenStream(lexer);
    parser.setInputStream(tokStrm);
    parser.setBuildParseTree(true);
    ParseTree tree = null;
    try {
        tree = parser.root();
    } catch (CancellationException e) {
    }
    if (lexerErrorListener.error() != null) {
        throw lexerErrorListener.error();
    }
    if (parserErrorListener.error() != null) {
        throw parserErrorListener.error();
    }
    ParseTreeWalker walker = new ParseTreeWalker();
    Listener listener = new Listener();
    walker.walk(listener, tree);
    return listener.includeString;
}