Working on textual IR

core/src/main/java/org/teavm/common/GraphUtils.java

@@ -21,10 +21,6 @@ import java.util.List;
 import java.util.function.IntPredicate;
 import java.util.stream.Collectors;
 
-/**
- *
- * @author Alexey Andreev
- */
 public final class GraphUtils {
     static final byte NONE = 0;
     static final byte VISITING = 1;
@@ -233,12 +229,6 @@ public final class GraphUtils {
         return components.toArray(new int[0][]);
     }
 
-    private static class SCCFinder {
-        int[] index;
-        int[] lowlink;
-        boolean[] onStack;
-    }
-
     public static DominatorTree buildDominatorTree(Graph graph) {
         DominatorTreeBuilder builder = new DominatorTreeBuilder(graph);
         builder.build();

core/src/main/java/org/teavm/model/MethodHandle.java

@@ -17,10 +17,6 @@ package org.teavm.model;
 
 import java.util.Arrays;
 
-/**
- *
- * @author Alexey Andreev
- */
 public class MethodHandle {
     private MethodHandleType kind;
     private String className;

core/src/main/java/org/teavm/model/util/InstructionStringifier.java

@@ -21,10 +21,6 @@ import java.util.stream.Collectors;
 import org.teavm.model.*;
 import org.teavm.model.instructions.*;
 
-/**
- *
- * @author Alexey Andreev
- */
 public class InstructionStringifier implements InstructionReader {
     private TextLocation location;
     private StringBuilder sb;
@@ -64,12 +60,12 @@ public class InstructionStringifier implements InstructionReader {
 
     @Override
     public void longConstant(VariableReader receiver, long cst) {
-        sb.append("@").append(receiver.getIndex()).append(" := ").append(cst);
+        sb.append("@").append(receiver.getIndex()).append(" := ").append(cst).append("L");
     }
 
     @Override
     public void floatConstant(VariableReader receiver, float cst) {
-        sb.append("@").append(receiver.getIndex()).append(" := ").append(cst);
+        sb.append("@").append(receiver.getIndex()).append(" := ").append(cst).append('F');
     }
 
     @Override
@@ -267,38 +263,35 @@ public class InstructionStringifier implements InstructionReader {
 
     @Override
     public void create(VariableReader receiver, String type) {
-        sb.append("@").append(receiver.getIndex()).append(" = new ").append(type).append("()");
+        sb.append("@").append(receiver.getIndex()).append(" = new ").append(type).append("");
     }
 
     @Override
     public void getField(VariableReader receiver, VariableReader instance, FieldReference field, ValueType fieldType) {
-        sb.append("@").append(receiver.getIndex()).append(" := ");
+        sb.append("@").append(receiver.getIndex()).append(" := field " + field);
+        sb.append(field);
         if (instance != null) {
-            sb.append("@").append(instance.getIndex());
+            sb.append(" @").append(instance.getIndex());
-        } else {
-            sb.append(field.getClassName());
         }
-        sb.append(".").append(field.getFieldName());
     }
 
     @Override
     public void putField(VariableReader instance, FieldReference field, VariableReader value, ValueType fieldType) {
+        sb.append("field " + field);
         if (instance != null) {
-            sb.append("@").append(instance.getIndex());
+            sb.append(" @").append(instance.getIndex());
-        } else {
-            sb.append(field.getClassName());
         }
-        sb.append(".").append(field.getFieldName()).append(" := @").append(value.getIndex());
+        sb.append(" := @").append(value.getIndex());
     }
 
     @Override
     public void arrayLength(VariableReader receiver, VariableReader array) {
-        sb.append("@").append(receiver.getIndex()).append(" := @").append(array.getIndex()).append(".length");
+        sb.append("@").append(receiver.getIndex()).append(" := lengthOf @").append(array.getIndex());
     }
 
     @Override
     public void cloneArray(VariableReader receiver, VariableReader array) {
-        sb.append("@").append(receiver.getIndex()).append(" := @").append(array.getIndex()).append(".clone()");
+        sb.append("@").append(receiver.getIndex()).append(" := clone @").append(array.getIndex()).append("");
     }
 
     @Override
@@ -325,19 +318,25 @@ public class InstructionStringifier implements InstructionReader {
         if (receiver != null) {
             sb.append("@").append(receiver.getIndex()).append(" := ");
         }
+        switch (type) {
+            case SPECIAL:
+                sb.append("invoke ");
+                break;
+            case VIRTUAL:
+                sb.append("invokeVirtual ");
+                break;
+        }
+
         if (instance != null) {
             sb.append("@").append(instance.getIndex());
-        } else {
-            sb.append(method.getClassName());
         }
-        sb.append(".").append(method.getName()).append("(");
+
         for (int i = 0; i < arguments.size(); ++i) {
-            if (i > 0) {
+            if (instance != null || i > 0) {
                 sb.append(", ");
             }
             sb.append("@").append(arguments.get(i).getIndex());
         }
-        sb.append(")");
     }
 
     @Override
@@ -410,12 +409,12 @@ public class InstructionStringifier implements InstructionReader {
     @Override
     public void isInstance(VariableReader receiver, VariableReader value, ValueType type) {
         sb.append("@").append(receiver.getIndex()).append(" := @").append(value.getIndex())
-                .append(" instanceof ").append(type);
+                .append(" instanceOf ").append(type);
     }
 
     @Override
     public void initClass(String className) {
-        sb.append("initclass ").append(className);
+        sb.append("initClass ").append(className);
     }
 
     @Override
@@ -425,11 +424,11 @@ public class InstructionStringifier implements InstructionReader {
 
     @Override
     public void monitorEnter(VariableReader objectRef) {
-        sb.append("monitorenter @").append(objectRef.getIndex());
+        sb.append("monitorEnter @").append(objectRef.getIndex());
     }
 
     @Override
     public void monitorExit(VariableReader objectRef) {
-        sb.append("monitorexit @").append(objectRef.getIndex());
+        sb.append("monitorExit @").append(objectRef.getIndex());
     }
 }

core/src/main/java/org/teavm/model/util/ListingBuilder.java

@@ -46,7 +46,7 @@ public class ListingBuilder {
 
             for (PhiReader phi : block.readPhis()) {
                 sb.append(prefix).append("    ");
-                sb.append("@").append(phi.getReceiver().getIndex()).append(" := ");
+                sb.append("@").append(phi.getReceiver().getIndex()).append(" := phi ");
                 List<? extends IncomingReader> incomings = phi.readIncomings();
                 for (int j = 0; j < incomings.size(); ++j) {
                     if (j > 0) {

core/src/main/java/org/teavm/model/util/ListingLexer.java

@@ -0,0 +1,424 @@
+/*
+ *  Copyright 2016 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.model.util;
+
+import java.io.IOException;
+import java.io.Reader;
+
+class ListingLexer {
+    private Reader reader;
+    private int c;
+    private ListingToken token;
+    private Object tokenValue;
+    private int index = -1;
+    private int tokenStart;
+
+    public ListingLexer(Reader reader) {
+        this.reader = reader;
+    }
+
+    public ListingToken getToken() {
+        return token;
+    }
+
+    public Object getTokenValue() {
+        return tokenValue;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+
+    public int getTokenStart() {
+        return tokenStart;
+    }
+
+    public void nextToken() throws IOException, ListingParseException {
+        if (token == ListingToken.EOF) {
+            return;
+        }
+
+        tokenStart = index;
+        if (index < 0) {
+            tokenStart = 0;
+            nextChar();
+        }
+        skipWhiteSpace();
+
+        do {
+            switch (c) {
+                case -1:
+                    token = ListingToken.EOF;
+                    break;
+                case '@':
+                    nextChar();
+                    readVariable();
+                    break;
+                case '$':
+                    readLabel();
+                    break;
+                case '\'':
+                    readString();
+                    break;
+                case ':':
+                    nextChar();
+                    if (c == '=') {
+                        nextChar();
+                        token = ListingToken.ASSIGN;
+                    } else {
+                        token = ListingToken.COLON;
+                    }
+                    break;
+                case '=':
+                    nextChar();
+                    expect('=');
+                    token = ListingToken.EQUAL;
+                    break;
+                case '!':
+                    nextChar();
+                    expect('=');
+                    token = ListingToken.NOT_EQUAL;
+                    break;
+                case '<':
+                    nextChar();
+                    if (c == '=') {
+                        nextChar();
+                        token = ListingToken.LESS_OR_EQUAL;
+                    } else if (c == '<') {
+                        nextChar();
+                        token = ListingToken.SHIFT_LEFT;
+                    } else {
+                        token = ListingToken.LESS;
+                    }
+                    break;
+                case '>':
+                    nextChar();
+                    if (c == '=') {
+                        nextChar();
+                        token = ListingToken.GREATER_OR_EQUAL;
+                    } else if (c == '>') {
+                        nextChar();
+                        if (c == '>') {
+                            nextChar();
+                            token = ListingToken.SHIFT_RIGHT_UNSIGNED;
+                        } else {
+                            token = ListingToken.SHIFT_RIGHT;
+                        }
+                    } else {
+                        token = ListingToken.GREATER;
+                    }
+                    break;
+                case '+':
+                    nextChar();
+                    token = ListingToken.ADD;
+                    break;
+                case '-':
+                    nextChar();
+                    token = ListingToken.SUBTRACT;
+                    break;
+                case '*':
+                    nextChar();
+                    token = ListingToken.SUBTRACT;
+                    break;
+                case '/':
+                    nextChar();
+                    if (c == '/') {
+                        if (skipComment()) {
+                            continue;
+                        } else {
+                            token = ListingToken.EOF;
+                        }
+                    } else {
+                        token = ListingToken.DIVIDE;
+                    }
+                    break;
+                case '%':
+                    nextChar();
+                    token = ListingToken.REMAINDER;
+                    break;
+                case '&':
+                    nextChar();
+                    token = ListingToken.AND;
+                    break;
+                case '|':
+                    nextChar();
+                    token = ListingToken.OR;
+                    break;
+                case '^':
+                    nextChar();
+                    token = ListingToken.XOR;
+                    break;
+                case '.':
+                    nextChar();
+                    token = ListingToken.DOT;
+                    break;
+                case ',':
+                    nextChar();
+                    token = ListingToken.COMMA;
+                    break;
+                case '[':
+                    nextChar();
+                    token = ListingToken.LEFT_SQUARE_BRACKET;
+                    break;
+                case ']':
+                    nextChar();
+                    token = ListingToken.RIGHT_SQUARE_BRACKET;
+                    break;
+                default:
+                    if (isIdentifierStart()) {
+                        readIdentifier();
+                    } else if (c >= '0' && c <= '9') {
+                        readNumber();
+                    } else {
+                        unexpected();
+                    }
+                    break;
+            }
+        } while (false);
+    }
+
+    private void readVariable() throws IOException {
+        nextChar();
+        token = ListingToken.VARIABLE;
+        readIdentifierLike();
+    }
+
+    private void readLabel() throws IOException {
+        readIdentifierLike();
+        token = ListingToken.LABEL;
+        readIdentifierLike();
+    }
+
+    private void readIdentifierLike() throws IOException {
+        StringBuilder sb = new StringBuilder();
+        while (isIdentifierPart()) {
+            sb.append(c);
+            nextChar();
+        }
+        tokenValue = sb.toString();
+    }
+
+    private void readIdentifier() throws IOException {
+        token = ListingToken.IDENTIFIER;
+        StringBuilder sb = new StringBuilder();
+        sb.append(c);
+        while (isIdentifierPart()) {
+            sb.append(c);
+            nextChar();
+        }
+        tokenValue = sb.toString();
+    }
+
+    private boolean isIdentifierStart() {
+        if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z') {
+            return true;
+        }
+        switch (c) {
+            case '_':
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    private boolean isIdentifierPart() {
+        if (isIdentifierStart() || c >= '0' && c <= '9') {
+            return true;
+        }
+        switch (c) {
+            case '<':
+            case '>':
+            case '(':
+            case ')':
+            case '.':
+            case '$':
+            case '#':
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    private void readString() throws IOException, ListingParseException {
+        nextChar();
+        token = ListingToken.STRING;
+        StringBuilder sb = new StringBuilder();
+
+        while (true) {
+            switch (c) {
+                case '\'':
+                    nextChar();
+                    tokenValue = sb.toString();
+                    return;
+                case '\\':
+                    switch (c) {
+                        case 'n':
+                            sb.append('\n');
+                            break;
+                        case 't':
+                            sb.append('\t');
+                            break;
+                        case '\'':
+                        case '\\':
+                            sb.append(c);
+                            break;
+                        case 'u':
+                            int codePoint = 0;
+                            for (int i = 0; i < 4; ++i) {
+                                if (c == -1) {
+                                    throw new ListingParseException("Wrong escape sequence", index);
+                                }
+                                int digit = Character.digit((char) c, 16);
+                                if (digit < 0) {
+                                    throw new ListingParseException("Wrong escape sequence", index);
+                                }
+                                codePoint = codePoint * 16 + digit;
+                            }
+                            sb.appendCodePoint(codePoint);
+                            break;
+                        default:
+                            throw new ListingParseException("Wrong escape sequence", index);
+                    }
+                    break;
+                default:
+                    if (c < ' ') {
+                        throw new ListingParseException("Unexpected character in string literal: " + c, index);
+                    }
+                    sb.append(c);
+                    nextChar();
+                    break;
+            }
+        }
+    }
+
+    private void readNumber() throws IOException, ListingParseException {
+        StringBuilder sb = new StringBuilder();
+        sb.append(c);
+
+        nextChar();
+        token = ListingToken.INTEGER;
+
+        while (c >= '0' && c <= '9') {
+            sb.append(c);
+            nextChar();
+        }
+
+        if (c == '.') {
+            sb.append('.');
+            token = ListingToken.DOUBLE;
+            nextChar();
+
+            if (c < '0' || c > '9') {
+                throw new ListingParseException("Wrong number", index);
+            }
+
+            while (c >= '0' && c <= '9') {
+                sb.append(c);
+                nextChar();
+            }
+        }
+
+        if (c == 'E' || c == 'e') {
+            sb.append('e');
+            nextChar();
+            if (c == '+' || c == '-') {
+                sb.append(c);
+                nextChar();
+            }
+
+            if (c < '0' || c > '9') {
+                throw new ListingParseException("Wrong number", index);
+            }
+
+            while (c >= '0' && c <= '9') {
+                sb.append(c);
+                nextChar();
+            }
+        }
+
+        if (c == 'F' || c == 'f') {
+            nextChar();
+            token = ListingToken.FLOAT;
+        } else if (c == 'l' || c == 'L') {
+            nextChar();
+            token = ListingToken.LONG;
+        } else if (isIdentifierStart()) {
+            throw new ListingParseException("Wrong number", index);
+        }
+
+        switch (token) {
+            case INTEGER:
+                tokenValue = Integer.parseInt(sb.toString());
+                break;
+            case LONG:
+                tokenValue = Long.parseLong(sb.toString());
+                break;
+            case FLOAT:
+                tokenValue = Float.parseFloat(sb.toString());
+                break;
+            case DOUBLE:
+                tokenValue = Double.parseDouble(sb.toString());
+                break;
+            default:
+                break;
+        }
+    }
+
+    private void expect(char expected) throws IOException, ListingParseException {
+        if (c != expected) {
+            unexpected();
+        }
+        nextChar();
+    }
+
+    private void unexpected() throws ListingParseException {
+        throw new ListingParseException("Unexpected character: " + c, index);
+    }
+
+    private void skipWhiteSpace() throws IOException {
+        while (true) {
+            switch (c) {
+                case ' ':
+                case '\n':
+                case '\t':
+                    nextChar();
+                    break;
+                default:
+                    return;
+            }
+        }
+    }
+
+    private boolean skipComment() throws IOException {
+        while (true) {
+            switch (c) {
+                case '\n':
+                    nextChar();
+                    return true;
+                case -1:
+                    return false;
+                default:
+                    nextChar();
+                    break;
+            }
+        }
+    }
+
+    private void nextChar() throws IOException {
+        c = reader.read();
+        ++index;
+    }
+}

core/src/main/java/org/teavm/model/util/ListingParseException.java

@@ -0,0 +1,29 @@
+/*
+ *  Copyright 2016 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.model.util;
+
+public class ListingParseException extends Exception {
+    private final int index;
+
+    public ListingParseException(String message, int index) {
+        super(message);
+        this.index = index;
+    }
+
+    public int getIndex() {
+        return index;
+    }
+}

core/src/main/java/org/teavm/model/util/ListingParser.java

@@ -0,0 +1,19 @@
+/*
+ *  Copyright 2016 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.model.util;
+
+public class ListingParser {
+}

core/src/main/java/org/teavm/model/util/ListingToken.java

@@ -0,0 +1,51 @@
+/*
+ *  Copyright 2016 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.model.util;
+
+enum ListingToken {
+    IDENTIFIER,
+    INTEGER,
+    LONG,
+    FLOAT,
+    DOUBLE,
+    STRING,
+    VARIABLE,
+    LABEL,
+    ASSIGN,
+    EQUAL,
+    NOT_EQUAL,
+    LESS,
+    LESS_OR_EQUAL,
+    GREATER,
+    GREATER_OR_EQUAL,
+    ADD,
+    SUBTRACT,
+    MULTIPLY,
+    DIVIDE,
+    REMAINDER,
+    AND,
+    OR,
+    XOR,
+    SHIFT_LEFT,
+    SHIFT_RIGHT,
+    SHIFT_RIGHT_UNSIGNED,
+    DOT,
+    LEFT_SQUARE_BRACKET,
+    RIGHT_SQUARE_BRACKET,
+    COMMA,
+    COLON,
+    EOF
+}