Examples with ConfigCompileException com.laytonsmith.core.exceptions.ConfigCompileException used on opensource projects

Example 1 with ConfigCompileException

use of com.laytonsmith.core.exceptions.ConfigCompileException in project CommandHelper by EngineHub.

the class Math method doIncrementDecrement.

/**
 * If we have the case {@code @array[0]++}, we have to increment it as though it were a variable, so we have to do
 * that with execs. This method consolidates the code to do so.
 *
 * @return
 */
protected static Construct doIncrementDecrement(ParseTree[] nodes, Script parent, Environment env, Target t, Function func, boolean pre, boolean inc) {
    if (nodes[0].getData() instanceof CFunction) {
        Function f;
        try {
            f = ((CFunction) nodes[0].getData()).getFunction();
        } catch (ConfigCompileException ex) {
            // This can't really happen, as the compiler would have already caught this
            throw new Error(ex);
        }
        if (f.getName().equals(new ArrayHandling.array_get().getName())) {
            // Ok, so, this is it, we're in charge here.
            long temp;
            long newVal;
            // First, pull out the current value. We're gonna do this manually though, and we will actually
            // skip the whole array_get execution.
            ParseTree eval = nodes[0];
            Construct array = parent.seval(eval.getChildAt(0), env);
            Construct index = parent.seval(eval.getChildAt(1), env);
            Construct cdelta = new CInt(1, t);
            if (nodes.length == 2) {
                cdelta = parent.seval(nodes[1], env);
            }
            long delta = Static.getInt(cdelta, t);
            // First, error check, then get the old value, and store it in temp.
            if (!(array instanceof CArray) && !(array instanceof ArrayAccess)) {
                // Let's just evaluate this like normal with array_get, so it will
                // throw the appropriate exception.
                new ArrayHandling.array_get().exec(t, env, array, index);
                throw ConfigRuntimeException.CreateUncatchableException("Shouldn't have gotten here. Please report this error, and how you got here.", t);
            } else if (!(array instanceof CArray)) {
                // own exception.
                throw new CRECastException("Cannot increment/decrement a non-array array" + " accessed value. (The value passed in was \"" + array.val() + "\")", t);
            } else {
                // Ok, we're good. Data types should all be correct.
                CArray myArray = ((CArray) array);
                Construct value = myArray.get(index, t);
                if (value instanceof CInt || value instanceof CDouble) {
                    temp = Static.getInt(value, t);
                    if (inc) {
                        newVal = temp + delta;
                    } else {
                        newVal = temp - delta;
                    }
                    new ArrayHandling.array_set().exec(t, env, array, index, new CInt(newVal, t));
                } else {
                    throw new CRECastException("Cannot increment/decrement a non numeric value.", t);
                }
            }
            long valueToReturn;
            if (pre) {
                valueToReturn = newVal;
            } else {
                valueToReturn = temp;
            }
            return new CInt(valueToReturn, t);
        }
    }
    Construct[] args = new Construct[nodes.length];
    for (int i = 0; i < args.length; i++) {
        args[i] = parent.eval(nodes[i], env);
    }
    return func.exec(t, env, args);
}

Example 2 with ConfigCompileException

use of com.laytonsmith.core.exceptions.ConfigCompileException in project CommandHelper by EngineHub.

the class Script method eval.

/**
 * Given the parse tree and environment, executes the tree.
 *
 * @param c
 * @param env
 * @return
 * @throws CancelCommandException
 */
public Construct eval(ParseTree c, final Environment env) throws CancelCommandException {
    if (env.getEnv(GlobalEnv.class).IsInterrupted()) {
        // unconditionally.
        throw new CancelCommandException("", Target.UNKNOWN);
    }
    final Construct m = c.getData();
    CurrentEnv = env;
    if (m.getCType() != ConstructType.FUNCTION) {
        if (m.getCType() == ConstructType.VARIABLE) {
            return new CString(m.val(), m.getTarget());
        } else {
            return m;
        }
    }
    StackTraceManager stManager = env.getEnv(GlobalEnv.class).GetStackTraceManager();
    boolean addedRootStackElement = false;
    try {
        // If it's an unknown target, this is not user generated code, and we want to skip adding the element here.
        if (stManager.isStackEmpty() && !m.getTarget().equals(Target.UNKNOWN)) {
            stManager.addStackTraceElement(new ConfigRuntimeException.StackTraceElement("<<main code>>", m.getTarget()));
            addedRootStackElement = true;
        }
        stManager.setCurrentTarget(c.getTarget());
        env.getEnv(GlobalEnv.class).SetScript(this);
        if (m.val().charAt(0) == '_' && m.val().charAt(1) != '_') {
            // Not really a function, so we can't put it in Function.
            Procedure p = getProc(m.val());
            if (p == null) {
                throw new CREInvalidProcedureException("Unknown procedure \"" + m.val() + "\"", m.getTarget());
            }
            Environment newEnv = env;
            try {
                newEnv = env.clone();
            } catch (CloneNotSupportedException e) {
            }
            ProfilePoint pp = env.getEnv(GlobalEnv.class).GetProfiler().start(m.val() + " execution", LogLevel.INFO);
            Construct ret;
            try {
                ret = p.cexecute(c.getChildren(), newEnv, m.getTarget());
            } finally {
                pp.stop();
            }
            return ret;
        }
        final Function f;
        try {
            f = (Function) FunctionList.getFunction(m);
        } catch (ConfigCompileException e) {
            // Turn it into a config runtime exception. This shouldn't ever happen though.
            throw ConfigRuntimeException.CreateUncatchableException("Unable to find function " + m.val(), m.getTarget());
        }
        ArrayList<Construct> args = new ArrayList<>();
        try {
            if (f.isRestricted() && !Static.hasCHPermission(f.getName(), env)) {
                throw new CREInsufficientPermissionException("You do not have permission to use the " + f.getName() + " function.", m.getTarget());
            }
            if (f.useSpecialExec()) {
                ProfilePoint p = null;
                if (f.shouldProfile() && env.getEnv(GlobalEnv.class).GetProfiler() != null && env.getEnv(GlobalEnv.class).GetProfiler().isLoggable(f.profileAt())) {
                    p = env.getEnv(GlobalEnv.class).GetProfiler().start(f.profileMessageS(c.getChildren()), f.profileAt());
                }
                Construct ret;
                try {
                    ret = f.execs(m.getTarget(), env, this, c.getChildren().toArray(new ParseTree[] {}));
                } finally {
                    if (p != null) {
                        p.stop();
                    }
                }
                return ret;
            }
            for (ParseTree c2 : c.getChildren()) {
                args.add(eval(c2, env));
            }
            Object[] a = args.toArray();
            Construct[] ca = new Construct[a.length];
            for (int i = 0; i < a.length; i++) {
                ca[i] = (Construct) a[i];
                // CArray, CBoolean, CDouble, CInt, CNull, CString, CVoid, CEntry, CLabel (only to sconcat).
                if (!(ca[i] instanceof CArray || ca[i] instanceof CBoolean || ca[i] instanceof CDouble || ca[i] instanceof CInt || ca[i] instanceof CNull || ca[i] instanceof CString || ca[i] instanceof CVoid || ca[i] instanceof IVariable || ca[i] instanceof CEntry || ca[i] instanceof CLabel) && (!f.getName().equals("__autoconcat__") && (ca[i] instanceof CLabel))) {
                    throw new CRECastException("Invalid Construct (" + ca[i].getClass() + ") being passed as an argument to a function (" + f.getName() + ")", m.getTarget());
                }
                while (f.preResolveVariables() && ca[i] instanceof IVariable) {
                    IVariable cur = (IVariable) ca[i];
                    ca[i] = env.getEnv(GlobalEnv.class).GetVarList().get(cur.getVariableName(), cur.getTarget()).ival();
                }
            }
            {
                // It takes a moment to generate the toString of some things, so lets not do it
                // if we actually aren't going to profile
                ProfilePoint p = null;
                if (f.shouldProfile() && env.getEnv(GlobalEnv.class).GetProfiler() != null && env.getEnv(GlobalEnv.class).GetProfiler().isLoggable(f.profileAt())) {
                    p = env.getEnv(GlobalEnv.class).GetProfiler().start(f.profileMessage(ca), f.profileAt());
                }
                Construct ret;
                try {
                    ret = f.exec(m.getTarget(), env, ca);
                } finally {
                    if (p != null) {
                        p.stop();
                    }
                }
                return ret;
            }
        // We want to catch and rethrow the ones we know how to catch, and then
        // catch and report anything else.
        } catch (ConfigRuntimeException | ProgramFlowManipulationException e) {
            if (e instanceof AbstractCREException) {
                ((AbstractCREException) e).freezeStackTraceElements(stManager);
            }
            throw e;
        } catch (InvalidEnvironmentException e) {
            if (!e.isDataSet()) {
                e.setData(f.getName());
            }
            throw e;
        } catch (Exception e) {
            String brand = Implementation.GetServerType().getBranding();
            SimpleVersion version = Static.getVersion();
            String culprit = brand;
            outer: for (ExtensionTracker tracker : ExtensionManager.getTrackers().values()) {
                for (FunctionBase b : tracker.getFunctions()) {
                    if (b.getName().equals(f.getName())) {
                        // name instead of the core plugin's name.
                        for (Extension extension : tracker.getExtensions()) {
                            culprit = extension.getName();
                            break outer;
                        }
                    }
                }
            }
            String emsg = TermColors.RED + "Uh oh! You've found an error in " + TermColors.CYAN + culprit + TermColors.RED + ".\n" + "This happened while running your code, so you may be able to find a workaround," + " but is ultimately an issue in " + culprit + ".\n" + "The following code caused the error:\n" + TermColors.WHITE;
            List<String> args2 = new ArrayList<>();
            Map<String, String> vars = new HashMap<>();
            for (Construct cc : args) {
                if (cc instanceof IVariable) {
                    Construct ccc = env.getEnv(GlobalEnv.class).GetVarList().get(((IVariable) cc).getVariableName(), cc.getTarget()).ival();
                    String vval = ccc.val();
                    if (ccc instanceof CString) {
                        vval = ccc.asString().getQuote();
                    }
                    vars.put(((IVariable) cc).getVariableName(), vval);
                }
                if (cc == null) {
                    args2.add("java-null");
                } else if (cc instanceof CString) {
                    args2.add(cc.asString().getQuote());
                } else if (cc instanceof IVariable) {
                    args2.add(((IVariable) cc).getVariableName());
                } else {
                    args2.add(cc.val());
                }
            }
            if (!vars.isEmpty()) {
                emsg += StringUtils.Join(vars, " = ", "\n") + "\n";
            }
            emsg += f.getName() + "(";
            emsg += StringUtils.Join(args2, ", ");
            emsg += ")\n";
            emsg += TermColors.RED + "on or around " + TermColors.YELLOW + m.getTarget().file() + TermColors.WHITE + ":" + TermColors.CYAN + m.getTarget().line() + TermColors.RED + ".\n";
            // Server might not be available in this platform, so let's be sure to ignore those exceptions
            String modVersion;
            try {
                modVersion = StaticLayer.GetConvertor().GetServer().getAPIVersion();
            } catch (Exception ex) {
                modVersion = Implementation.GetServerType().name();
            }
            String extensionData = "";
            for (ExtensionTracker tracker : ExtensionManager.getTrackers().values()) {
                for (Extension extension : tracker.getExtensions()) {
                    try {
                        extensionData += TermColors.CYAN + extension.getName() + TermColors.RED + " (" + TermColors.RESET + extension.getVersion() + TermColors.RED + ")\n";
                    } catch (AbstractMethodError ex) {
                        // This happens with an old style extensions. Just skip it.
                        extensionData += TermColors.CYAN + "Unknown Extension" + TermColors.RED + "\n";
                    }
                }
            }
            if (extensionData.isEmpty()) {
                extensionData = "NONE\n";
            }
            emsg += "Please report this to the developers, and be sure to include the version numbers:\n" + TermColors.CYAN + "Server" + TermColors.RED + " version: " + TermColors.RESET + modVersion + TermColors.RED + ";\n" + TermColors.CYAN + brand + TermColors.RED + " version: " + TermColors.RESET + version + TermColors.RED + ";\n" + "Loaded extensions and versions:\n" + extensionData + "Here's the stacktrace:\n" + TermColors.RESET + Static.GetStacktraceString(e);
            Static.getLogger().log(Level.SEVERE, emsg);
            throw new CancelCommandException(null, Target.UNKNOWN);
        }
    } finally {
        if (addedRootStackElement && stManager.isStackSingle()) {
            stManager.popStackTraceElement();
        }
    }
}

Example 3 with ConfigCompileException

use of com.laytonsmith.core.exceptions.ConfigCompileException in project CommandHelper by EngineHub.

the class MethodScriptCompiler method compile.

/**
 * Compiles the token stream into a valid ParseTree. This also includes optimization and reduction.
 *
 * @param stream The token stream, as generated by {@link #lex(String, File, boolean) lex}
 * @return A fully compiled, optimized, and reduced parse tree. If {@code stream} is null or empty, null is
 * returned.
 * @throws ConfigCompileException If the script contains syntax errors. Additionally, during optimization, certain
 * methods may cause compile errors. Any function that can optimize static occurrences and throws a
 * {@link ConfigRuntimeException} will have that exception converted to a ConfigCompileException.
 */
public static ParseTree compile(TokenStream stream) throws ConfigCompileException, ConfigCompileGroupException {
    Set<ConfigCompileException> compilerErrors = new HashSet<>();
    if (stream == null || stream.isEmpty()) {
        return null;
    }
    Target unknown;
    try {
        // Instead of using Target.UNKNOWN, we can at least set the file.
        unknown = new Target(0, stream.get(0).target.file(), 0);
    } catch (Exception e) {
        unknown = Target.UNKNOWN;
    }
    // Remove all newlines and whitespaces.
    ListIterator<Token> it = stream.listIterator(0);
    while (it.hasNext()) {
        if (it.next().type.isWhitespace()) {
            it.remove();
        }
    }
    // Get the file options.
    final FileOptions fileOptions = stream.getFileOptions();
    ParseTree tree = new ParseTree(fileOptions);
    tree.setData(CNull.NULL);
    Stack<ParseTree> parents = new Stack<>();
    /**
     * constructCount is used to determine if we need to use autoconcat when reaching a FUNC_END. The previous
     * constructs, if the count is greater than 1, will be moved down into an autoconcat.
     */
    Stack<AtomicInteger> constructCount = new Stack<>();
    constructCount.push(new AtomicInteger(0));
    parents.push(tree);
    tree.addChild(new ParseTree(new CFunction("__autoconcat__", unknown), fileOptions));
    parents.push(tree.getChildAt(0));
    tree = tree.getChildAt(0);
    constructCount.push(new AtomicInteger(0));
    /**
     * The array stack is used to keep track of the number of square braces in use.
     */
    Stack<AtomicInteger> arrayStack = new Stack<>();
    arrayStack.add(new AtomicInteger(-1));
    Stack<AtomicInteger> minusArrayStack = new Stack<>();
    Stack<AtomicInteger> minusFuncStack = new Stack<>();
    int parens = 0;
    Token t = null;
    int bracketCount = 0;
    // Create a Token array to iterate over, rather than using the LinkedList's O(n) get() method.
    Token[] tokenArray = stream.toArray(new Token[stream.size()]);
    for (int i = 0; i < tokenArray.length; i++) {
        t = tokenArray[i];
        Token prev1 = i - 1 >= 0 ? tokenArray[i - 1] : new Token(TType.UNKNOWN, "", t.target);
        Token next1 = i + 1 < stream.size() ? tokenArray[i + 1] : new Token(TType.UNKNOWN, "", t.target);
        Token next2 = i + 2 < stream.size() ? tokenArray[i + 2] : new Token(TType.UNKNOWN, "", t.target);
        Token next3 = i + 3 < stream.size() ? tokenArray[i + 3] : new Token(TType.UNKNOWN, "", t.target);
        // Brace handling
        if (t.type == TType.LCURLY_BRACKET) {
            ParseTree b = new ParseTree(new CFunction("__cbrace__", t.getTarget()), fileOptions);
            tree.addChild(b);
            tree = b;
            parents.push(b);
            bracketCount++;
            constructCount.push(new AtomicInteger(0));
            continue;
        }
        if (t.type == TType.RCURLY_BRACKET) {
            bracketCount--;
            if (constructCount.peek().get() > 1) {
                // We need to autoconcat some stuff
                int stacks = constructCount.peek().get();
                int replaceAt = tree.getChildren().size() - stacks;
                ParseTree c = new ParseTree(new CFunction("__autoconcat__", tree.getTarget()), fileOptions);
                List<ParseTree> subChildren = new ArrayList<>();
                for (int b = replaceAt; b < tree.numberOfChildren(); b++) {
                    subChildren.add(tree.getChildAt(b));
                }
                c.setChildren(subChildren);
                if (replaceAt > 0) {
                    List<ParseTree> firstChildren = new ArrayList<>();
                    for (int d = 0; d < replaceAt; d++) {
                        firstChildren.add(tree.getChildAt(d));
                    }
                    tree.setChildren(firstChildren);
                } else {
                    tree.removeChildren();
                }
                tree.addChild(c);
            }
            parents.pop();
            tree = parents.peek();
            constructCount.pop();
            try {
                constructCount.peek().incrementAndGet();
            } catch (EmptyStackException e) {
                throw new ConfigCompileException("Unexpected end curly brace", t.target);
            }
            continue;
        }
        // Associative array/label handling
        if (t.type == TType.LABEL && tree.getChildren().size() > 0) {
            // If it's not an atomic identifier it's an error.
            if (!prev1.type.isAtomicLit() && prev1.type != TType.IVARIABLE && prev1.type != TType.KEYWORD) {
                ConfigCompileException error = new ConfigCompileException("Invalid label specified", t.getTarget());
                if (prev1.type == TType.FUNC_END) {
                    // and stop compilation at this point.
                    throw error;
                }
                compilerErrors.add(error);
            }
            // Wrap previous construct in a CLabel
            ParseTree cc = tree.getChildren().get(tree.getChildren().size() - 1);
            tree.removeChildAt(tree.getChildren().size() - 1);
            tree.addChild(new ParseTree(new CLabel(cc.getData()), fileOptions));
            continue;
        }
        // Array notation handling
        if (t.type.equals(TType.LSQUARE_BRACKET)) {
            arrayStack.push(new AtomicInteger(tree.getChildren().size() - 1));
            continue;
        } else if (t.type.equals(TType.RSQUARE_BRACKET)) {
            boolean emptyArray = false;
            if (prev1.type.equals(TType.LSQUARE_BRACKET)) {
                emptyArray = true;
            }
            if (arrayStack.size() == 1) {
                throw new ConfigCompileException("Mismatched square bracket", t.target);
            }
            // array is the location of the array
            int array = arrayStack.pop().get();
            // index is the location of the first node with the index
            int index = array + 1;
            if (!tree.hasChildren() || array == -1) {
                throw new ConfigCompileException("Brackets are illegal here", t.target);
            }
            ParseTree myArray = tree.getChildAt(array);
            ParseTree myIndex;
            if (!emptyArray) {
                myIndex = new ParseTree(new CFunction("__autoconcat__", myArray.getTarget()), fileOptions);
                for (int j = index; j < tree.numberOfChildren(); j++) {
                    myIndex.addChild(tree.getChildAt(j));
                }
            } else {
                myIndex = new ParseTree(new CSlice("0..-1", t.target), fileOptions);
            }
            tree.setChildren(tree.getChildren().subList(0, array));
            ParseTree arrayGet = new ParseTree(new CFunction("array_get", t.target), fileOptions);
            arrayGet.addChild(myArray);
            arrayGet.addChild(myIndex);
            // Check if the @var[...] had a negating "-" in front. If so, add a neg().
            if (!minusArrayStack.isEmpty() && arrayStack.size() + 1 == minusArrayStack.peek().get()) {
                if (!next1.type.equals(TType.LSQUARE_BRACKET)) {
                    // Wait if there are more array_get's comming.
                    ParseTree negTree = new ParseTree(new CFunction("neg", unknown), fileOptions);
                    negTree.addChild(arrayGet);
                    tree.addChild(negTree);
                    minusArrayStack.pop();
                } else {
                    // Negate the next array_get instead, so just add this one to the tree.
                    tree.addChild(arrayGet);
                }
            } else {
                tree.addChild(arrayGet);
            }
            constructCount.peek().set(constructCount.peek().get() - myIndex.numberOfChildren());
            continue;
        }
        // Smart strings
        if (t.type == TType.SMART_STRING) {
            if (t.val().contains("@")) {
                ParseTree function = new ParseTree(fileOptions);
                function.setData(new CFunction(new Compiler.smart_string().getName(), t.target));
                ParseTree string = new ParseTree(fileOptions);
                string.setData(new CString(t.value, t.target));
                function.addChild(string);
                tree.addChild(function);
            } else {
                tree.addChild(new ParseTree(new CString(t.val(), t.target), fileOptions));
            }
            constructCount.peek().incrementAndGet();
            continue;
        }
        if (t.type == TType.DEREFERENCE) {
            // Currently unimplemented, but going ahead and making it strict
            compilerErrors.add(new ConfigCompileException("The '" + t.val() + "' symbol is not currently allowed in raw strings. You must quote all" + " symbols.", t.target));
        }
        if (t.type.equals(TType.FUNC_NAME)) {
            CFunction func = new CFunction(t.val(), t.target);
            ParseTree f = new ParseTree(func, fileOptions);
            tree.addChild(f);
            constructCount.push(new AtomicInteger(0));
            tree = f;
            parents.push(f);
        } else if (t.type.equals(TType.FUNC_START)) {
            if (!prev1.type.equals(TType.FUNC_NAME)) {
                throw new ConfigCompileException("Unexpected parenthesis", t.target);
            }
            parens++;
        } else if (t.type.equals(TType.FUNC_END)) {
            if (parens <= 0) {
                throw new ConfigCompileException("Unexpected parenthesis", t.target);
            }
            parens--;
            // Pop function.
            parents.pop();
            if (constructCount.peek().get() > 1) {
                // We need to autoconcat some stuff
                int stacks = constructCount.peek().get();
                int replaceAt = tree.getChildren().size() - stacks;
                ParseTree c = new ParseTree(new CFunction("__autoconcat__", tree.getTarget()), fileOptions);
                List<ParseTree> subChildren = new ArrayList<>();
                for (int b = replaceAt; b < tree.numberOfChildren(); b++) {
                    subChildren.add(tree.getChildAt(b));
                }
                c.setChildren(subChildren);
                if (replaceAt > 0) {
                    List<ParseTree> firstChildren = new ArrayList<>();
                    for (int d = 0; d < replaceAt; d++) {
                        firstChildren.add(tree.getChildAt(d));
                    }
                    tree.setChildren(firstChildren);
                } else {
                    tree.removeChildren();
                }
                tree.addChild(c);
            }
            constructCount.pop();
            try {
                constructCount.peek().incrementAndGet();
            } catch (EmptyStackException e) {
                throw new ConfigCompileException("Unexpected end parenthesis", t.target);
            }
            try {
                tree = parents.peek();
            } catch (EmptyStackException e) {
                throw new ConfigCompileException("Unexpected end parenthesis", t.target);
            }
            // Handle "-func(args)" and "-func(args)[index]".
            if (!minusFuncStack.isEmpty() && minusFuncStack.peek().get() == parens + 1) {
                if (next1.type.equals(TType.LSQUARE_BRACKET)) {
                    // Move the negation to the array_get which contains this function.
                    // +1 because the bracket isn't counted yet.
                    minusArrayStack.push(new AtomicInteger(arrayStack.size() + 1));
                } else {
                    // Negate this function.
                    ParseTree negTree = new ParseTree(new CFunction("neg", unknown), fileOptions);
                    negTree.addChild(tree.getChildAt(tree.numberOfChildren() - 1));
                    tree.removeChildAt(tree.numberOfChildren() - 1);
                    tree.addChildAt(tree.numberOfChildren(), negTree);
                }
                minusFuncStack.pop();
            }
        } else if (t.type.equals(TType.COMMA)) {
            if (constructCount.peek().get() > 1) {
                int stacks = constructCount.peek().get();
                int replaceAt = tree.getChildren().size() - stacks;
                ParseTree c = new ParseTree(new CFunction("__autoconcat__", unknown), fileOptions);
                List<ParseTree> subChildren = new ArrayList<>();
                for (int b = replaceAt; b < tree.numberOfChildren(); b++) {
                    subChildren.add(tree.getChildAt(b));
                }
                c.setChildren(subChildren);
                if (replaceAt > 0) {
                    List<ParseTree> firstChildren = new ArrayList<>();
                    for (int d = 0; d < replaceAt; d++) {
                        firstChildren.add(tree.getChildAt(d));
                    }
                    tree.setChildren(firstChildren);
                } else {
                    tree.removeChildren();
                }
                tree.addChild(c);
            }
            constructCount.peek().set(0);
            continue;
        }
        if (t.type == TType.SLICE) {
            // "empty first" slice notation. Compare this to the code below.
            try {
                CSlice slice;
                String value = next1.val();
                if (next1.type == TType.MINUS || next1.type == TType.PLUS) {
                    value = next1.val() + next2.val();
                    i++;
                }
                slice = new CSlice(".." + value, t.getTarget());
                i++;
                tree.addChild(new ParseTree(slice, fileOptions));
                constructCount.peek().incrementAndGet();
                continue;
            } catch (ConfigRuntimeException ex) {
                // turn them into a CCE.
                throw new ConfigCompileException(ex);
            }
        }
        if (next1.type.equals(TType.SLICE)) {
            // Slice notation handling
            try {
                CSlice slice;
                if (t.type.isSeparator() || (t.type.isWhitespace() && prev1.type.isSeparator()) || t.type.isKeyword()) {
                    // empty first
                    String value = next2.val();
                    i++;
                    if (next2.type == TType.MINUS || next2.type == TType.PLUS) {
                        value = next2.val() + next3.val();
                        i++;
                    }
                    slice = new CSlice(".." + value, next1.getTarget());
                    if (t.type.isKeyword()) {
                        tree.addChild(new ParseTree(new CKeyword(t.val(), t.getTarget()), fileOptions));
                        constructCount.peek().incrementAndGet();
                    }
                } else if (next2.type.isSeparator() || next2.type.isKeyword()) {
                    // empty last
                    String modifier = "";
                    if (prev1.type == TType.MINUS || prev1.type == TType.PLUS) {
                        // The negative would have already been inserted into the tree
                        modifier = prev1.val();
                        tree.removeChildAt(tree.getChildren().size() - 1);
                    }
                    slice = new CSlice(modifier + t.value + "..", t.target);
                } else {
                    // both are provided
                    String modifier1 = "";
                    if (prev1.type == TType.MINUS || prev1.type == TType.PLUS) {
                        // It's a negative, incorporate that here, and remove the
                        // minus from the tree
                        modifier1 = prev1.val();
                        tree.removeChildAt(tree.getChildren().size() - 1);
                    }
                    Token first = t;
                    if (first.type.isWhitespace()) {
                        first = prev1;
                    }
                    Token second = next2;
                    i++;
                    String modifier2 = "";
                    if (next2.type == TType.MINUS || next2.type == TType.PLUS) {
                        modifier2 = next2.val();
                        second = next3;
                        i++;
                    }
                    slice = new CSlice(modifier1 + first.value + ".." + modifier2 + second.value, t.target);
                }
                i++;
                tree.addChild(new ParseTree(slice, fileOptions));
                constructCount.peek().incrementAndGet();
                continue;
            } catch (ConfigRuntimeException ex) {
                // turn them into a CCE.
                throw new ConfigCompileException(ex);
            }
        } else if (t.type == TType.LIT) {
            Construct c = Static.resolveConstruct(t.val(), t.target);
            if (c instanceof CString && fileOptions.isStrict()) {
                compilerErrors.add(new ConfigCompileException("Bare strings are not allowed in strict mode", t.target));
            } else if ((c instanceof CInt || c instanceof CDecimal) && next1.type == TType.DOT && next2.type == TType.LIT) {
                // minus zero before decimals and leading zeroes after decimals
                try {
                    if (t.value.startsWith("0m")) {
                        // CDecimal
                        String neg = "";
                        if (prev1.value.equals("-")) {
                            neg = "-";
                        }
                        c = new CDecimal(neg + t.value.substring(2) + '.' + next2.value, t.target);
                    } else {
                        // CDouble
                        c = new CDouble(Double.parseDouble(t.val() + '.' + next2.val()), t.target);
                    }
                    i += 2;
                } catch (NumberFormatException e) {
                // Not a double
                }
            }
            tree.addChild(new ParseTree(c, fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.equals(TType.STRING) || t.type.equals(TType.COMMAND)) {
            tree.addChild(new ParseTree(new CString(t.val(), t.target), fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.equals(TType.IDENTIFIER)) {
            tree.addChild(new ParseTree(new CPreIdentifier(t.val(), t.target), fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.isKeyword()) {
            tree.addChild(new ParseTree(new CKeyword(t.val(), t.getTarget()), fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.equals(TType.IVARIABLE)) {
            tree.addChild(new ParseTree(new IVariable(t.val(), t.target), fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.equals(TType.UNKNOWN)) {
            tree.addChild(new ParseTree(Static.resolveConstruct(t.val(), t.target), fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.isSymbol()) {
            // Also handles "-function()" and "-@var[index]".
            if (t.type.equals(TType.MINUS) && !prev1.type.isAtomicLit() && !prev1.type.equals(TType.IVARIABLE) && !prev1.type.equals(TType.VARIABLE) && !prev1.type.equals(TType.RCURLY_BRACKET) && !prev1.type.equals(TType.RSQUARE_BRACKET) && !prev1.type.equals(TType.FUNC_END) && (next1.type.equals(TType.IVARIABLE) || next1.type.equals(TType.VARIABLE) || next1.type.equals(TType.FUNC_NAME))) {
                // Check if we are negating a value from an array, function or variable.
                if (next2.type.equals(TType.LSQUARE_BRACKET)) {
                    // +1 because the bracket isn't counted yet.
                    minusArrayStack.push(new AtomicInteger(arrayStack.size() + 1));
                } else if (next1.type.equals(TType.FUNC_NAME)) {
                    // +1 because the function isn't counted yet.
                    minusFuncStack.push(new AtomicInteger(parens + 1));
                } else {
                    ParseTree negTree = new ParseTree(new CFunction("neg", unknown), fileOptions);
                    negTree.addChild(new ParseTree(new IVariable(next1.value, next1.target), fileOptions));
                    tree.addChild(negTree);
                    constructCount.peek().incrementAndGet();
                    // Skip the next variable as we've just handled it.
                    i++;
                }
            } else {
                tree.addChild(new ParseTree(new CSymbol(t.val(), t.type, t.target), fileOptions));
                constructCount.peek().incrementAndGet();
            }
        } else if (t.type == TType.DOT) {
            // Check for doubles that start with a decimal, otherwise concat
            Construct c = null;
            if (next1.type == TType.LIT && prev1.type != TType.STRING && prev1.type != TType.SMART_STRING) {
                try {
                    c = new CDouble(Double.parseDouble('.' + next1.val()), t.target);
                    i++;
                } catch (NumberFormatException e) {
                // Not a double
                }
            }
            if (c == null) {
                c = new CSymbol(".", TType.CONCAT, t.target);
            }
            tree.addChild(new ParseTree(c, fileOptions));
            constructCount.peek().incrementAndGet();
        } else if (t.type.equals(TType.VARIABLE) || t.type.equals(TType.FINAL_VAR)) {
            tree.addChild(new ParseTree(new Variable(t.val(), null, false, t.type.equals(TType.FINAL_VAR), t.target), fileOptions));
            constructCount.peek().incrementAndGet();
        // right_vars.add(new Variable(t.val(), null, t.line_num));
        }
    }
    assert t != null;
    if (arrayStack.size() != 1) {
        throw new ConfigCompileException("Mismatched square brackets", t.target);
    }
    if (parens != 0) {
        throw new ConfigCompileException("Mismatched parenthesis", t.target);
    }
    if (bracketCount != 0) {
        throw new ConfigCompileException("Mismatched curly braces", t.target);
    }
    Stack<List<Procedure>> procs = new Stack<>();
    procs.add(new ArrayList<Procedure>());
    processKeywords(tree);
    optimizeAutoconcats(tree, compilerErrors);
    optimize(tree, procs, compilerErrors);
    link(tree, compilerErrors);
    checkLabels(tree, compilerErrors);
    checkBreaks(tree, compilerErrors);
    if (!compilerErrors.isEmpty()) {
        if (compilerErrors.size() == 1) {
            // Just throw the one CCE
            for (ConfigCompileException e : compilerErrors) {
                throw e;
            }
        } else {
            throw new ConfigCompileGroupException(compilerErrors);
        }
    }
    parents.pop();
    tree = parents.pop();
    return tree;
}

Example 4 with ConfigCompileException

use of com.laytonsmith.core.exceptions.ConfigCompileException in project CommandHelper by EngineHub.

the class MethodScriptCompiler method lex.

/**
 * Lexes the script, and turns it into a token stream. This looks through the script character by character.
 *
 * @param script The script to lex
 * @param file The file this script came from, or potentially null if the code is from a dynamic source
 * @param inPureMScript If the script is in pure MethodScript, this should be true. Pure MethodScript is defined as
 * code that doesn't have command alias wrappers.
 * @param saveAllTokens If this script is planning to be compiled, then this value should always be false, however,
 * if the calling code needs all tokens for informational purposes (and doesn't plan on actually compiling the code)
 * then this can be true. If true, all tokens are saved, including comments and (some) whitespace. Given this lexing
 * stream, the exact source code could be re-constructed.
 *
 * A note on whitespace: The whitespace tokens are not guaranteed to be accurate, however, the column information
 * is. If you have two tokens t1 and t2, each with a value of length 1, where the columns are 1 and 5, then that
 * means there are 4 spaces between the two.
 * @return A stream of tokens
 * @throws ConfigCompileException If compilation fails due to bad syntax
 */
public static TokenStream lex(String script, File file, boolean inPureMScript, boolean saveAllTokens) throws ConfigCompileException {
    if (script.isEmpty()) {
        return new TokenStream(new LinkedList<>(), "");
    }
    if ((int) script.charAt(0) == 65279) {
        // Remove the UTF-8 Byte Order Mark, if present.
        script = script.substring(1);
    }
    final StringBuilder fileOptions = new StringBuilder();
    script = script.replaceAll("\r\n", "\n");
    script = script + "\n";
    final Set<String> keywords = KeywordList.getKeywordNames();
    final TokenStream token_list = new TokenStream();
    // Set our state variables.
    boolean state_in_quote = false;
    int quoteLineNumberStart = 1;
    boolean in_smart_quote = false;
    int smartQuoteLineNumberStart = 1;
    boolean in_comment = false;
    int commentLineNumberStart = 1;
    boolean comment_is_block = false;
    boolean in_opt_var = false;
    boolean inCommand = (!inPureMScript);
    boolean inMultiline = false;
    boolean in_smart_comment = false;
    boolean in_file_options = false;
    int fileOptionsLineNumberStart = 1;
    StringBuilder buf = new StringBuilder();
    int line_num = 1;
    int column = 1;
    int lastColumn = 0;
    Target target = Target.UNKNOWN;
    // Lex the script character by character.
    for (int i = 0; i < script.length(); i++) {
        Character c = script.charAt(i);
        Character c2 = null;
        if (i < script.length() - 1) {
            c2 = script.charAt(i + 1);
        }
        column += i - lastColumn;
        lastColumn = i;
        if (c == '\n') {
            line_num++;
            column = 1;
            if (!inMultiline && !inPureMScript) {
                inCommand = true;
            }
        }
        if (buf.length() == 0) {
            target = new Target(line_num, file, column);
        }
        // If we are in file options, add the character to the buffer if it's not a file options end character.
        if (in_file_options) {
            // If support for more escaped characters would be desired in the future, it could be added here.
            switch(c) {
                case '\\':
                    {
                        if (c2 == '>') {
                            // "\>".
                            fileOptions.append('>');
                            i++;
                            continue;
                        }
                    }
                case '>':
                    {
                        if (saveAllTokens) {
                            token_list.add(new Token(TType.FILE_OPTIONS_STRING, fileOptions.toString(), target));
                            token_list.add(new Token(TType.FILE_OPTIONS_END, ">", target));
                        }
                        in_file_options = false;
                        continue;
                    }
            }
            fileOptions.append(c);
            continue;
        }
        // Comment handling. This is bypassed if we are in a string.
        if (!state_in_quote && !in_smart_quote) {
            switch(c) {
                // Block comments start (/* and /**) and Double slash line comment start (//).
                case '/':
                    {
                        if (!in_comment) {
                            if (c2 == '*') {
                                // "/*" or "/**".
                                buf.append("/*");
                                in_comment = true;
                                comment_is_block = true;
                                if (i < script.length() - 2 && script.charAt(i + 2) == '*') {
                                    // "/**".
                                    in_smart_comment = true;
                                    buf.append("*");
                                    i++;
                                }
                                commentLineNumberStart = line_num;
                                i++;
                                continue;
                            } else if (c2 == '/') {
                                // "//".
                                buf.append("//");
                                in_comment = true;
                                i++;
                                continue;
                            }
                        }
                        break;
                    }
                // Line comment start (#).
                case '#':
                    {
                        if (!in_comment) {
                            // "#".
                            buf.append("#");
                            in_comment = true;
                            continue;
                        }
                        break;
                    }
                // Block comment end (*/).
                case '*':
                    {
                        if (in_comment && comment_is_block && c2 == '/') {
                            // "*/".
                            if (saveAllTokens || in_smart_comment) {
                                buf.append("*/");
                                token_list.add(new Token(in_smart_comment ? TType.SMART_COMMENT : TType.COMMENT, buf.toString(), target));
                            }
                            buf = new StringBuilder();
                            target = new Target(line_num, file, column);
                            in_comment = false;
                            comment_is_block = false;
                            in_smart_comment = false;
                            i++;
                            continue;
                        }
                        break;
                    }
                // Line comment end (\n).
                case '\n':
                    {
                        if (in_comment && !comment_is_block) {
                            // "\n".
                            in_comment = false;
                            if (saveAllTokens) {
                                token_list.add(new Token(TType.COMMENT, buf.toString(), target));
                                token_list.add(new Token(TType.NEWLINE, "\n", new Target(line_num + 1, file, 0)));
                            }
                            buf = new StringBuilder();
                            target = new Target(line_num, file, column);
                            continue;
                        }
                        break;
                    }
            }
        }
        // If we are in a comment, add the character to the buffer.
        if (in_comment) {
            buf.append(c);
            continue;
        }
        // Handle non-comment non-quoted characters.
        if (!state_in_quote) {
            // (, ), ;, and whitespace.
            matched: {
                Token token;
                switch(c) {
                    case '+':
                        {
                            if (c2 == '=') {
                                // "+=".
                                token = new Token(TType.PLUS_ASSIGNMENT, "+=", target);
                                i++;
                            } else if (c2 == '+') {
                                // "++".
                                token = new Token(TType.INCREMENT, "++", target);
                                i++;
                            } else {
                                // "+".
                                token = new Token(TType.PLUS, "+", target);
                            }
                            break;
                        }
                    case '-':
                        {
                            if (c2 == '=') {
                                // "-=".
                                token = new Token(TType.MINUS_ASSIGNMENT, "-=", target);
                                i++;
                            } else if (c2 == '-') {
                                // "--".
                                token = new Token(TType.DECREMENT, "--", target);
                                i++;
                            } else if (c2 == '>') {
                                // "->".
                                token = new Token(TType.DEREFERENCE, "->", target);
                                i++;
                            } else {
                                // "-".
                                token = new Token(TType.MINUS, "-", target);
                            }
                            break;
                        }
                    case '*':
                        {
                            if (c2 == '=') {
                                // "*=".
                                token = new Token(TType.MULTIPLICATION_ASSIGNMENT, "*=", target);
                                i++;
                            } else if (c2 == '*') {
                                // "**".
                                token = new Token(TType.EXPONENTIAL, "**", target);
                                i++;
                            } else {
                                // "*".
                                token = new Token(TType.MULTIPLICATION, "*", target);
                            }
                            break;
                        }
                    case '/':
                        {
                            if (c2 == '=') {
                                // "/=".
                                token = new Token(TType.DIVISION_ASSIGNMENT, "/=", target);
                                i++;
                            } else {
                                // Protect against matching commands.
                                if (Character.isLetter(c2)) {
                                    // Pretend that division didn't match.
                                    break matched;
                                }
                                token = new Token(TType.DIVISION, "/", target);
                            }
                            break;
                        }
                    case '.':
                        {
                            if (c2 == '=') {
                                // ".=".
                                token = new Token(TType.CONCAT_ASSIGNMENT, ".=", target);
                                i++;
                            } else if (c2 == '.') {
                                // "..".
                                token = new Token(TType.SLICE, "..", target);
                                i++;
                            } else {
                                // ".".
                                token = new Token(TType.DOT, ".", target);
                            }
                            break;
                        }
                    case '%':
                        {
                            token = new Token(TType.MODULO, "%", target);
                            break;
                        }
                    case '>':
                        {
                            if (c2 == '=') {
                                // ">=".
                                token = new Token(TType.GTE, ">=", target);
                                i++;
                            } else if (c2 == '>' && i < script.length() - 2 && script.charAt(i + 2) == '>') {
                                // ">>>".
                                token = new Token(TType.MULTILINE_START, ">>>", target);
                                inMultiline = true;
                                i += 2;
                            } else {
                                // ">".
                                token = new Token(TType.GT, ">", target);
                            }
                            break;
                        }
                    case '<':
                        {
                            if (c2 == '!') {
                                // "<!".
                                if (buf.length() > 0) {
                                    token_list.add(new Token(TType.UNKNOWN, buf.toString(), target));
                                    buf = new StringBuilder();
                                    target = new Target(line_num, file, column);
                                }
                                if (saveAllTokens) {
                                    token_list.add(new Token(TType.FILE_OPTIONS_START, "<!", target));
                                }
                                in_file_options = true;
                                fileOptionsLineNumberStart = line_num;
                                i++;
                                continue;
                            } else if (c2 == '=') {
                                // "<=".
                                token = new Token(TType.LTE, "<=", target);
                                i++;
                            } else if (c2 == '<' && i < script.length() - 2 && script.charAt(i + 2) == '<') {
                                // "<<<".
                                token = new Token(TType.MULTILINE_END, "<<<", target);
                                inMultiline = false;
                                i += 2;
                            } else {
                                // "<".
                                token = new Token(TType.LT, "<", target);
                            }
                            break;
                        }
                    case '=':
                        {
                            if (c2 == '=') {
                                if (i < script.length() - 2 && script.charAt(i + 2) == '=') {
                                    // "===".
                                    token = new Token(TType.STRICT_EQUALS, "===", target);
                                    i += 2;
                                } else {
                                    // "==".
                                    token = new Token(TType.EQUALS, "==", target);
                                    i++;
                                }
                            } else {
                                // "=".
                                if (inCommand) {
                                    if (in_opt_var) {
                                        token = new Token(TType.OPT_VAR_ASSIGN, "=", target);
                                    } else {
                                        token = new Token(TType.ALIAS_END, "=", target);
                                        inCommand = false;
                                    }
                                } else {
                                    token = new Token(TType.ASSIGNMENT, "=", target);
                                }
                            }
                            break;
                        }
                    case '!':
                        {
                            if (c2 == '=') {
                                if (i < script.length() - 2 && script.charAt(i + 2) == '=') {
                                    // "!==".
                                    token = new Token(TType.STRICT_NOT_EQUALS, "!==", target);
                                    i += 2;
                                } else {
                                    // "!=".
                                    token = new Token(TType.NOT_EQUALS, "!=", target);
                                    i++;
                                }
                            } else {
                                // "!".
                                token = new Token(TType.LOGICAL_NOT, "!", target);
                            }
                            break;
                        }
                    case '&':
                        {
                            if (c2 == '&') {
                                if (i < script.length() - 2 && script.charAt(i + 2) == '&') {
                                    // "&&&".
                                    token = new Token(TType.DEFAULT_AND, "&&&", target);
                                    i += 2;
                                } else {
                                    // "&&".
                                    token = new Token(TType.LOGICAL_AND, "&&", target);
                                    i++;
                                }
                            } else {
                                // Pretend that bitwise AND didn't match.
                                break matched;
                            // token = new Token(TType.BIT_AND, "&", target);
                            }
                            break;
                        }
                    case '|':
                        {
                            if (c2 == '|') {
                                if (i < script.length() - 2 && script.charAt(i + 2) == '|') {
                                    // "|||".
                                    token = new Token(TType.DEFAULT_OR, "|||", target);
                                    i += 2;
                                } else {
                                    // "||".
                                    token = new Token(TType.LOGICAL_OR, "||", target);
                                    i++;
                                }
                            } else {
                                // Pretend that bitwise OR didn't match.
                                break matched;
                            // token = new Token(TType.BIT_OR, "|", target);
                            }
                            break;
                        }
                    // }
                    case ':':
                        {
                            if (c2 == ':') {
                                // "::".
                                token = new Token(TType.DEREFERENCE, "::", target);
                                i++;
                            } else {
                                // ":".
                                token = new Token(TType.LABEL, ":", target);
                            }
                            break;
                        }
                    case '{':
                        {
                            token = new Token(TType.LCURLY_BRACKET, "{", target);
                            break;
                        }
                    case '}':
                        {
                            token = new Token(TType.RCURLY_BRACKET, "}", target);
                            break;
                        }
                    case '[':
                        {
                            token = new Token(TType.LSQUARE_BRACKET, "[", target);
                            in_opt_var = true;
                            break;
                        }
                    case ']':
                        {
                            token = new Token(TType.RSQUARE_BRACKET, "]", target);
                            in_opt_var = false;
                            break;
                        }
                    case ',':
                        {
                            token = new Token(TType.COMMA, ",", target);
                            break;
                        }
                    case ';':
                        {
                            token = new Token(TType.SEMICOLON, ";", target);
                            break;
                        }
                    case '(':
                        {
                            token = new Token(TType.FUNC_START, "(", target);
                            // Handle the buffer or previous token, with the knowledge that a FUNC_START follows.
                            if (buf.length() > 0) {
                                if (saveAllTokens) {
                                    // true, because we know that won't be used by the compiler.
                                    if (KeywordList.getKeywordByName(buf.toString()) != null) {
                                        // It's a keyword.
                                        token_list.add(new Token(TType.KEYWORD, buf.toString(), target));
                                    } else {
                                        // It's not a keyword, but a normal function.
                                        token_list.add(new Token(TType.FUNC_NAME, buf.toString(), target));
                                    }
                                } else {
                                    token_list.add(new Token(TType.FUNC_NAME, buf.toString(), target));
                                }
                                buf = new StringBuilder();
                                target = new Target(line_num, file, column);
                            } else {
                                // function.
                                try {
                                    int count = 0;
                                    Iterator<Token> it = token_list.descendingIterator();
                                    Token t;
                                    while ((t = it.next()).type == TType.WHITESPACE) {
                                        count++;
                                    }
                                    if (t.type == TType.UNKNOWN) {
                                        t.type = TType.FUNC_NAME;
                                        // Go ahead and remove the whitespace here too, they break things.
                                        count--;
                                        for (int a = 0; a < count; a++) {
                                            token_list.removeLast();
                                        }
                                    } else {
                                        token_list.add(new Token(TType.FUNC_NAME, "__autoconcat__", target));
                                    }
                                } catch (NoSuchElementException e) {
                                    // This is the first element on the list, so, it's another autoconcat.
                                    token_list.add(new Token(TType.FUNC_NAME, "__autoconcat__", target));
                                }
                            }
                            break;
                        }
                    case ')':
                        {
                            token = new Token(TType.FUNC_END, ")", target);
                            break;
                        }
                    case ' ':
                        {
                            // Whitespace case #1.
                            token = new Token(TType.WHITESPACE, " ", target);
                            break;
                        }
                    case '\t':
                        {
                            // Whitespace case #2 (TAB).
                            token = new Token(TType.WHITESPACE, "\t", target);
                            break;
                        }
                    default:
                        {
                            // No match was found at this point, so continue matching below.
                            break matched;
                        }
                }
                // Add previous characters as UNKNOWN token.
                if (buf.length() > 0) {
                    token_list.add(new Token(TType.UNKNOWN, buf.toString(), target));
                    buf = new StringBuilder();
                    target = new Target(line_num, file, column);
                }
                // Add the new token to the token list.
                token_list.add(token);
                // Continue lexing.
                continue;
            }
        }
        // Handle non-comment characters that might start or stop a quoted string.
        switch(c) {
            case '\'':
                {
                    if (state_in_quote && !in_smart_quote) {
                        token_list.add(new Token(TType.STRING, buf.toString(), target));
                        buf = new StringBuilder();
                        target = new Target(line_num, file, column);
                        state_in_quote = false;
                        continue;
                    } else if (!state_in_quote) {
                        state_in_quote = true;
                        quoteLineNumberStart = line_num;
                        in_smart_quote = false;
                        if (buf.length() > 0) {
                            token_list.add(new Token(TType.UNKNOWN, buf.toString(), target));
                            buf = new StringBuilder();
                            target = new Target(line_num, file, column);
                        }
                        continue;
                    } else {
                        // We're in a smart quote.
                        buf.append("'");
                    }
                    break;
                }
            case '"':
                {
                    if (state_in_quote && in_smart_quote) {
                        token_list.add(new Token(TType.SMART_STRING, buf.toString(), target));
                        buf = new StringBuilder();
                        target = new Target(line_num, file, column);
                        state_in_quote = false;
                        in_smart_quote = false;
                        continue;
                    } else if (!state_in_quote) {
                        state_in_quote = true;
                        in_smart_quote = true;
                        smartQuoteLineNumberStart = line_num;
                        if (buf.length() > 0) {
                            token_list.add(new Token(TType.UNKNOWN, buf.toString(), target));
                            buf = new StringBuilder();
                            target = new Target(line_num, file, column);
                        }
                        continue;
                    } else {
                        // We're in normal quotes.
                        buf.append('"');
                    }
                    break;
                }
            case '\n':
                {
                    // Append a newline to the buffer if it's quoted.
                    if (state_in_quote) {
                        buf.append(c);
                    } else {
                        // Newline is not quoted. Move the buffer to an UNKNOWN token and add a NEWLINE token.
                        if (buf.length() > 0) {
                            token_list.add(new Token(TType.UNKNOWN, buf.toString(), target));
                            buf = new StringBuilder();
                            target = new Target(line_num, file, column);
                        }
                        token_list.add(new Token(TType.NEWLINE, "\n", target));
                    }
                    continue;
                }
            case '\\':
                {
                    // Handle backslash character outside of quotes.
                    if (!state_in_quote) {
                        token_list.add(new Token(TType.SEPERATOR, "\\", target));
                        break;
                    }
                    // Handle an escape sign in a quote.
                    switch(c2) {
                        case '\\':
                        case '\'':
                        case '"':
                            buf.append(c2);
                            break;
                        case 'n':
                            buf.append('\n');
                            break;
                        case 'r':
                            buf.append('\r');
                            break;
                        case 't':
                            buf.append('\t');
                            break;
                        case '0':
                            buf.append('\0');
                            break;
                        case 'f':
                            buf.append('\f');
                            // Form feed.
                            break;
                        case 'v':
                            buf.append('\u000B');
                            // Vertical TAB.
                            break;
                        case 'a':
                            buf.append('\u0007');
                            // Alarm.
                            break;
                        case 'b':
                            buf.append('\u0008');
                            // Backspace.
                            break;
                        case 'u':
                            {
                                // Grab the next 4 characters, and check to see if they are numbers.
                                if (i + 5 >= script.length()) {
                                    throw new ConfigCompileException("Unrecognized unicode escape sequence", target);
                                }
                                String unicode = script.substring(i + 2, i + 6);
                                int unicodeNum;
                                try {
                                    unicodeNum = Integer.parseInt(unicode, 16);
                                } catch (NumberFormatException e) {
                                    throw new ConfigCompileException("Unrecognized unicode escape sequence: \\u" + unicode, target);
                                }
                                buf.append(Character.toChars(unicodeNum));
                                i += 4;
                                break;
                            }
                        case 'U':
                            {
                                // Grab the next 8 characters and check to see if they are numbers.
                                if (i + 9 >= script.length()) {
                                    throw new ConfigCompileException("Unrecognized unicode escape sequence", target);
                                }
                                String unicode = script.substring(i + 2, i + 10);
                                int unicodeNum;
                                try {
                                    unicodeNum = Integer.parseInt(unicode, 16);
                                } catch (NumberFormatException e) {
                                    throw new ConfigCompileException("Unrecognized unicode escape sequence: \\u" + unicode, target);
                                }
                                buf.append(Character.toChars(unicodeNum));
                                i += 8;
                                break;
                            }
                        case '@':
                            {
                                if (!in_smart_quote) {
                                    throw new ConfigCompileException("The escape sequence \\@ is not" + " a recognized escape sequence in a non-smart string", target);
                                }
                                buf.append("\\@");
                                break;
                            }
                        default:
                            {
                                // Since we might expand this list later, don't let them use unescaped backslashes.
                                throw new ConfigCompileException("The escape sequence \\" + c2 + " is not a recognized escape sequence", target);
                            }
                    }
                    i++;
                    continue;
                }
            default:
                {
                    // Disallow Non-Breaking Space Characters.
                    if (!state_in_quote && c == '\u00A0') /*nbsp*/
                    {
                        throw new ConfigCompileException("NBSP character in script", target);
                    }
                    // Add the characters that didn't match anything to the buffer.
                    buf.append(c);
                    continue;
                }
        }
    }
    // Handle unended file options.
    if (in_file_options) {
        throw new ConfigCompileException("Unended file options. You started the the file options on line " + fileOptionsLineNumberStart, target);
    }
    // Handle unended string literals.
    if (state_in_quote) {
        if (in_smart_quote) {
            throw new ConfigCompileException("Unended string literal. You started the last double quote on line " + smartQuoteLineNumberStart, target);
        } else {
            throw new ConfigCompileException("Unended string literal. You started the last single quote on line " + quoteLineNumberStart, target);
        }
    }
    // Handle unended comment blocks. Since a newline is added to the end of the script, line comments are ended.
    if (in_comment || comment_is_block) {
        throw new ConfigCompileException("Unended block comment. You started the comment on line " + commentLineNumberStart, target);
    }
    // Look at the tokens and get meaning from them. Also, look for improper symbol locations
    // and go ahead and absorb unary +- into the token.
    ListIterator<Token> it = token_list.listIterator(0);
    while (it.hasNext()) {
        Token t = it.next();
        // Combine whitespace tokens into one.
        if (t.type == TType.WHITESPACE && it.hasNext()) {
            Token next;
            if ((next = it.next()).type == TType.WHITESPACE) {
                t.value += next.val();
                // Remove 'next'.
                it.remove();
            } else {
                // Select 'next' <--.
                it.previous();
            }
            // Select 't' <--.
            it.previous();
            // Select 't' -->.
            it.next();
        }
        // Convert "-" + number to -number if allowed.
        // Select 't' <--.
        it.previous();
        if (it.hasPrevious()) {
            // Select 'prev1' <--.
            Token prev1 = it.previous();
            if (it.hasPrevious()) {
                // Select 'prev2' <--.
                Token prev2 = it.previous();
                if (// Convert "± UNKNOWN".
                t.type == TType.UNKNOWN && prev1.type.isPlusMinus() && // Don't convert "number/string/var ± ...".
                !prev2.type.isIdentifier() && // Don't convert "func() ± ...".
                prev2.type != TType.FUNC_END && // Don't convert "± @var".
                !IVAR_PATTERN.matcher(t.val()).matches() && !VAR_PATTERN.matcher(t.val()).matches()) {
                    // Don't convert "± $var".
                    // It is a negative/positive number: Absorb the sign.
                    t.value = prev1.value + t.value;
                    // Select 'prev2' -->.
                    it.next();
                    // Select 'prev1' -->.
                    it.next();
                    // Remove 'prev1'.
                    it.remove();
                } else {
                    // Select 'prev2' -->.
                    it.next();
                    // Select 'prev1' -->.
                    it.next();
                }
            } else {
                // Select 'prev1' -->.
                it.next();
            }
        }
        // Select 't' -->.
        it.next();
        // Assign a type to all UNKNOWN tokens.
        if (t.type == TType.UNKNOWN) {
            if (t.val().charAt(0) == '/' && t.val().length() > 1) {
                t.type = TType.COMMAND;
            } else if (t.val().equals("$")) {
                t.type = TType.FINAL_VAR;
            } else if (VAR_PATTERN.matcher(t.val()).matches()) {
                t.type = TType.VARIABLE;
            } else if (IVAR_PATTERN.matcher(t.val()).matches()) {
                t.type = TType.IVARIABLE;
            } else if (t.val().charAt(0) == '@') {
                throw new ConfigCompileException("IVariables must match the regex: " + IVAR_PATTERN, target);
            } else if (keywords.contains(t.val())) {
                t.type = TType.KEYWORD;
            } else if (t.val().matches("[\t ]*")) {
                t.type = TType.WHITESPACE;
            } else {
                t.type = TType.LIT;
            }
        }
        // Skip this check if we're not in pure mscript.
        if (inPureMScript) {
            if (it.hasNext()) {
                // Select 'next' -->.
                Token next = it.next();
                // Select 'next' <--.
                it.previous();
                // Select 't' <--.
                it.previous();
                if (t.type.isSymbol() && !t.type.isUnary() && !next.type.isUnary()) {
                    if (it.hasPrevious()) {
                        // Select 'prev1' <--.
                        Token prev1 = it.previous();
                        if (prev1.type.equals(TType.FUNC_START) || prev1.type.equals(TType.COMMA) || next.type.equals(TType.FUNC_END) || next.type.equals(TType.COMMA) || prev1.type.isSymbol() || next.type.isSymbol()) {
                            throw new ConfigCompileException("Unexpected symbol (" + t.val() + ")", t.getTarget());
                        }
                        // Select 'prev1' -->.
                        it.next();
                    }
                }
                // Select 't' -->.
                it.next();
            }
        }
    }
    // Set file options
    token_list.setFileOptions(fileOptions.toString());
    // Make sure that the file options are the first non-comment code in the file
    {
        boolean foundCode = false;
        for (Token t : token_list) {
            if (t.type.isFileOption()) {
                if (foundCode) {
                    throw new ConfigCompileException("File options must be the first non-comment section in the" + " code", t.target);
                }
                break;
            }
            if (!t.type.isComment() && !t.type.isWhitespace()) {
                foundCode = true;
            }
        }
    }
    return token_list;
}

Example 5 with ConfigCompileException

use of com.laytonsmith.core.exceptions.ConfigCompileException in project CommandHelper by EngineHub.

the class CompilerObject method compile0.

void compile0() throws ConfigCompileException {
    Token t = consume();
    if (t.type == TType.NEWLINE) {
        return;
    }
    if (t.type == TType.CONST_START) {
        StringBuilder constName = new StringBuilder();
        while ((t = consume()).type != TType.RCURLY_BRACKET) {
            if (t.type != TType.BARE_STRING && t.type != TType.CONCAT) {
                throw new ConfigCompileException("Constant names may only contain names and dots.", t.getTarget());
            }
            constName.append(t.val());
        }
        Construct constant = env.getConstant(constName.toString());
        if (constant == null) {
            throw new ConfigCompileException("Expected the constant ${" + constName.toString() + "} to be provided in the compilation options, but it wasn't.", t.getTarget());
        }
        t = new Token(TType.STRING, constant.val(), constant.getTarget());
    }
    if (t.type == TType.BARE_STRING && peek().type == TType.FUNC_START) {
        consume();
        CFunction f = new CFunction(t.val(), t.getTarget());
        functionLines.add(peek().getTarget());
        pushNode(f);
        return;
    }
    if (t.type == TType.FUNC_END || t.type == TType.COMMA) {
        if (autoConcatCounter > 0) {
            autoConcatCounter--;
            popNode(t.getTarget());
        }
    }
    if (t.type == TType.COMMA) {
        return;
    }
    if (t.type == TType.FUNC_END) {
        // We're done with this child, so push it up
        popNode(t.getTarget());
        functionLines.pop();
        return;
    }
    if (t.type == TType.LSQUARE_BRACKET) {
        CFunction f = new CFunction("__cbracket__", Target.UNKNOWN);
        pushNode(f);
        bracketCounter++;
        bracketLines.push(t.getTarget());
        return;
    }
    if (t.type == TType.RSQUARE_BRACKET) {
        if (bracketCounter == 0) {
            throw new ConfigCompileException("Unexpected right bracket. (Did you have too many right square brackets (]) in your code?)", t.getTarget());
        }
        bracketCounter--;
        bracketLines.pop();
        popNode(t.getTarget());
        return;
    }
    if (t.type == TType.LCURLY_BRACKET) {
        CFunction f = new CFunction("__cbrace__", Target.UNKNOWN);
        pushNode(f);
        braceCounter++;
        braceLines.push(t.getTarget());
        return;
    }
    if (t.type == TType.RCURLY_BRACKET) {
        if (braceCounter == 0) {
            throw new ConfigCompileException("Unexpected right brace. (Did you have too many right braces (}) in your code?)", t.getTarget());
        }
        braceCounter--;
        braceLines.pop();
        popNode(t.getTarget());
        return;
    }
    // If the next token ISN'T a ) , } ] we need to autoconcat this
    if (peek().type != TType.FUNC_END && peek().type != TType.COMMA && peek().type != TType.RCURLY_BRACKET && peek().type != TType.RSQUARE_BRACKET) {
        // ... unless we're already in an autoconcat
        if (!(pointer.getData() instanceof CFunction && ((CFunction) pointer.getData()).val().equals("__autoconcat__"))) {
            CFunction f = new CFunction("__autoconcat__", Target.UNKNOWN);
            pushNode(f);
            autoConcatCounter++;
        }
    }
    if (t.type == TType.BARE_STRING && peek().type == TType.LABEL) {
        consume();
        pointer.addChild(new ParseTree(new CLabel(new CString(t.val(), t.getTarget())), stream.getFileOptions()));
        return;
    }
    if (t.type.isIdentifier()) {
        // If it's an atomic, put it in a construct and parse tree, then add it
        pointer.addChild(new ParseTree(resolveIdentifier(t), stream.getFileOptions()));
        return;
    }
    if (t.type.isSymbol()) {
        pointer.addChild(new ParseTree(new CSymbol(t.val(), t.type, t.getTarget()), stream.getFileOptions()));
        return;
    }
// Now we have to check ahead for commas and other division parameters.
}