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  3. org.mozilla.javascript.ast.LabeledStatement

Java 类org.mozilla.javascript.ast.LabeledStatement 实例源码

项目：HL4A    文件：Parser.java    
private LabeledStatement matchJumpLabelName()
    throws IOException
{
    LabeledStatement label = null;

    if (peekTokenOrEOL() == Token.NAME) {
        consumeToken();
        if (labelSet != null) {
            label = labelSet.get(ts.getString());
        }
        if (label == null) {
            reportError("msg.undef.label");
        }
    }

    return label;
}
项目：HL4A    文件：Parser.java    
private void recordLabel(Label label, LabeledStatement bundle)
    throws IOException
{
    // current token should be colon that primaryExpr left untouched
    if (peekToken() != Token.COLON) codeBug();
    consumeToken();
    String name = label.getName();
    if (labelSet == null) {
        labelSet = new HashMap<String,LabeledStatement>();
    } else {
        LabeledStatement ls = labelSet.get(name);
        if (ls != null) {
            if (compilerEnv.isIdeMode()) {
                Label dup = ls.getLabelByName(name);
                reportError("msg.dup.label",
                            dup.getAbsolutePosition(), dup.getLength());
            }
            reportError("msg.dup.label",
                        label.getPosition(), label.getLength());
        }
    }
    bundle.addLabel(label);
    labelSet.put(name, bundle);
}
项目：LoboEvolution    文件：Parser.java    
private LabeledStatement matchJumpLabelName()
    throws IOException
{
    LabeledStatement label = null;

    if (peekTokenOrEOL() == Token.NAME) {
        consumeToken();
        if (labelSet != null) {
            label = labelSet.get(ts.getString());
        }
        if (label == null) {
            reportError("msg.undef.label");
        }
    }

    return label;
}
项目：LoboEvolution    文件：Parser.java    
private void recordLabel(Label label, LabeledStatement bundle)
    throws IOException
{
    // current token should be colon that primaryExpr left untouched
    if (peekToken() != Token.COLON) codeBug();
    consumeToken();
    String name = label.getName();
    if (labelSet == null) {
        labelSet = new HashMap<String,LabeledStatement>();
    } else {
        LabeledStatement ls = labelSet.get(name);
        if (ls != null) {
            if (compilerEnv.isIdeMode()) {
                Label dup = ls.getLabelByName(name);
                reportError("msg.dup.label",
                            dup.getAbsolutePosition(), dup.getLength());
            }
            reportError("msg.dup.label",
                        label.getPosition(), label.getLength());
        }
    }
    bundle.addLabel(label);
    labelSet.put(name, bundle);
}
项目：HL4A    文件：IRFactory.java    
private Node transformLabeledStatement(LabeledStatement ls) {
    Label label = ls.getFirstLabel();
    List<Label> labels = ls.getLabels();
    decompiler.addName(label.getName());
    if (labels.size() > 1) {
        // more than one label
        for (Label lb : labels.subList(1, labels.size())) {
            decompiler.addEOL(Token.COLON);
            decompiler.addName(lb.getName());
        }
    }
    if (ls.getStatement().getType() == Token.BLOCK) {
        // reuse OBJECTLIT for ':' workaround, cf. transformObjectLiteral()
        decompiler.addToken(Token.OBJECTLIT);
        decompiler.addEOL(Token.LC);
    } else {
        decompiler.addEOL(Token.COLON);
    }
    Node statement = transform(ls.getStatement());
    if (ls.getStatement().getType() == Token.BLOCK) {
        decompiler.addEOL(Token.RC);
    }

    // Make a target and put it _after_ the statement node.  Add in the
    // LABEL node, so breaks get the right target.
    Node breakTarget = Node.newTarget();
    Node block = new Node(Token.BLOCK, label, statement, breakTarget);
    label.target = breakTarget;

    return block;
}
项目：HL4A    文件：Parser.java    
private BreakStatement breakStatement()
    throws IOException
{
    if (currentToken != Token.BREAK) codeBug();
    consumeToken();
    int lineno = ts.lineno, pos = ts.tokenBeg, end = ts.tokenEnd;
    Name breakLabel = null;
    if (peekTokenOrEOL() == Token.NAME) {
        breakLabel = createNameNode();
        end = getNodeEnd(breakLabel);
    }

    // matchJumpLabelName only matches if there is one
    LabeledStatement labels = matchJumpLabelName();
    // always use first label as target
    Jump breakTarget = labels == null ? null : labels.getFirstLabel();

    if (breakTarget == null && breakLabel == null) {
        if (loopAndSwitchSet == null || loopAndSwitchSet.size() == 0) {
            if (breakLabel == null) {
                reportError("msg.bad.break", pos, end - pos);
            }
        } else {
            breakTarget = loopAndSwitchSet.get(loopAndSwitchSet.size() - 1);
        }
    }

    BreakStatement pn = new BreakStatement(pos, end - pos);
    pn.setBreakLabel(breakLabel);
    // can be null if it's a bad break in error-recovery mode
    if (breakTarget != null)
        pn.setBreakTarget(breakTarget);
    pn.setLineno(lineno);
    return pn;
}
项目：HL4A    文件：Parser.java    
private ContinueStatement continueStatement()
    throws IOException
{
    if (currentToken != Token.CONTINUE) codeBug();
    consumeToken();
    int lineno = ts.lineno, pos = ts.tokenBeg, end = ts.tokenEnd;
    Name label = null;
    if (peekTokenOrEOL() == Token.NAME) {
        label = createNameNode();
        end = getNodeEnd(label);
    }

    // matchJumpLabelName only matches if there is one
    LabeledStatement labels = matchJumpLabelName();
    Loop target = null;
    if (labels == null && label == null) {
        if (loopSet == null || loopSet.size() == 0) {
            reportError("msg.continue.outside");
        } else {
            target = loopSet.get(loopSet.size() - 1);
        }
    } else {
        if (labels == null || !(labels.getStatement() instanceof Loop)) {
            reportError("msg.continue.nonloop", pos, end - pos);
        }
        target = labels == null ? null : (Loop)labels.getStatement();
    }

    ContinueStatement pn = new ContinueStatement(pos, end - pos);
    if (target != null)  // can be null in error-recovery mode
        pn.setTarget(target);
    pn.setLabel(label);
    pn.setLineno(lineno);
    return pn;
}
项目：LoboEvolution    文件：IRFactory.java    
private Node transformLabeledStatement(LabeledStatement ls) {
    Label label = ls.getFirstLabel();
    List<Label> labels = ls.getLabels();
    decompiler.addName(label.getName());
    if (labels.size() > 1) {
        // more than one label
        for (Label lb : labels.subList(1, labels.size())) {
            decompiler.addEOL(Token.COLON);
            decompiler.addName(lb.getName());
        }
    }
    if (ls.getStatement().getType() == Token.BLOCK) {
        // reuse OBJECTLIT for ':' workaround, cf. transformObjectLiteral()
        decompiler.addToken(Token.OBJECTLIT);
        decompiler.addEOL(Token.LC);
    } else {
        decompiler.addEOL(Token.COLON);
    }
    Node statement = transform(ls.getStatement());
    if (ls.getStatement().getType() == Token.BLOCK) {
        decompiler.addEOL(Token.RC);
    }

    // Make a target and put it _after_ the statement node.  Add in the
    // LABEL node, so breaks get the right target.
    Node breakTarget = Node.newTarget();
    Node block = new Node(Token.BLOCK, label, statement, breakTarget);
    label.target = breakTarget;

    return block;
}
项目：LoboEvolution    文件：Parser.java    
private BreakStatement breakStatement()
    throws IOException
{
    if (currentToken != Token.BREAK) codeBug();
    consumeToken();
    int lineno = ts.lineno, pos = ts.tokenBeg, end = ts.tokenEnd;
    Name breakLabel = null;
    if (peekTokenOrEOL() == Token.NAME) {
        breakLabel = createNameNode();
        end = getNodeEnd(breakLabel);
    }

    // matchJumpLabelName only matches if there is one
    LabeledStatement labels = matchJumpLabelName();
    // always use first label as target
    Jump breakTarget = labels == null ? null : labels.getFirstLabel();

    if (breakTarget == null && breakLabel == null) {
        if (loopAndSwitchSet == null || loopAndSwitchSet.size() == 0) {
            if (breakLabel == null) {
                reportError("msg.bad.break", pos, end - pos);
            }
        } else {
            breakTarget = loopAndSwitchSet.get(loopAndSwitchSet.size() - 1);
        }
    }

    BreakStatement pn = new BreakStatement(pos, end - pos);
    pn.setBreakLabel(breakLabel);
    // can be null if it's a bad break in error-recovery mode
    if (breakTarget != null)
        pn.setBreakTarget(breakTarget);
    pn.setLineno(lineno);
    return pn;
}
项目：LoboEvolution    文件：Parser.java    
private ContinueStatement continueStatement()
    throws IOException
{
    if (currentToken != Token.CONTINUE) codeBug();
    consumeToken();
    int lineno = ts.lineno, pos = ts.tokenBeg, end = ts.tokenEnd;
    Name label = null;
    if (peekTokenOrEOL() == Token.NAME) {
        label = createNameNode();
        end = getNodeEnd(label);
    }

    // matchJumpLabelName only matches if there is one
    LabeledStatement labels = matchJumpLabelName();
    Loop target = null;
    if (labels == null && label == null) {
        if (loopSet == null || loopSet.size() == 0) {
            reportError("msg.continue.outside");
        } else {
            target = loopSet.get(loopSet.size() - 1);
        }
    } else {
        if (labels == null || !(labels.getStatement() instanceof Loop)) {
            reportError("msg.continue.nonloop", pos, end - pos);
        }
        target = labels == null ? null : (Loop)labels.getStatement();
    }

    ContinueStatement pn = new ContinueStatement(pos, end - pos);
    if (target != null)  // can be null in error-recovery mode
        pn.setTarget(target);
    pn.setLabel(label);
    pn.setLineno(lineno);
    return pn;
}
项目：teavm    文件：AstWriter.java    
private void print(LabeledStatement node) throws IOException {
    for (Label label : node.getLabels()) {
        writer.append(label.getName()).append(':').ws();
    }
    print(node.getStatement());
}