Examples with JumpInsnNode org.objectweb.asm.tree.JumpInsnNode used on opensource projects

Example 46 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project jphp by jphp-compiler.

the class ForCompiler method write.

@Override
public void write(ForStmtToken token) {
    expr.writeDefineVariables(token.getInitLocal());
    for (ExprStmtToken expr : token.getInitExpr()) {
        this.expr.writeExpression(expr, false, false);
    }
    expr.writeUndefineVariables(token.getInitLocal());
    expr.writeDefineVariables(token.getLocal());
    for (VariableExprToken variable : token.getIterationLocal()) {
        // TODO optimize this for Dynamic Values of variables
        LocalVariable local = method.getLocalVariable(variable.getName());
        local.setValue(null);
    }
    LabelNode start = expr.writeLabel(node, token.getMeta().getStartLine());
    LabelNode iter = new LabelNode();
    LabelNode end = new LabelNode();
    for (Iterator<ExprStmtToken> i = token.getConditionExpr().iterator(); i.hasNext(); ) {
        ExprStmtToken expr = i.next();
        if (i.hasNext()) {
            this.expr.writeExpression(expr, false, false);
        } else {
            this.expr.writeExpression(expr, true, false);
            this.expr.writePopBoolean();
            add(new JumpInsnNode(IFEQ, end));
            this.expr.stackPop();
        }
    }
    method.pushJump(end, iter);
    expr.write(BodyStmtToken.class, token.getBody());
    method.popJump();
    add(iter);
    for (ExprStmtToken expr : token.getIterationExpr()) {
        this.expr.writeExpression(expr, false, false);
    }
    add(new JumpInsnNode(GOTO, start));
    add(end);
    add(new LineNumberNode(token.getMeta().getEndLine(), end));
    expr.writeUndefineVariables(token.getLocal());
}

Example 47 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project jphp by jphp-compiler.

the class GotoCompiler method write.

@Override
public void write(GotoStmtToken token) {
    LabelNode labelNode = method.getOrCreateGotoLabel(token.getLabel().getName());
    LabelStmtToken labelStmtToken = method.statement.findLabel(token.getLabel().getName());
    if (labelStmtToken == null) {
        compiler.getEnvironment().error(token.getLabel().toTraceInfo(compiler.getContext()), "'goto' to undefined label '%s'", token.getLabel().getName());
        return;
    }
    if (labelStmtToken.getLevel() > token.getLevel()) {
        compiler.getEnvironment().error(token.toTraceInfo(compiler.getContext()), "'goto' into loop, switch or finally statement is disallowed");
    }
    add(new JumpInsnNode(GOTO, labelNode));
}

Example 48 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project jphp by jphp-compiler.

the class ForeachCompiler method write.

@Override
public void write(ForeachStmtToken token) {
    expr.writeDefineVariables(token.getLocal());
    LabelNode start = new LabelNode();
    LabelNode end = new LabelNode();
    LabelNode l = new LabelNode();
    add(l);
    expr.writePushEnv();
    expr.writePushTraceInfo(token);
    expr.writeExpression(token.getIterator(), true, false, true);
    expr.writePopBoxing();
    expr.writePushConstBoolean(token.isValueReference());
    expr.writePushConstBoolean(token.isKeyReference());
    expr.writeSysDynamicCall(Environment.class, "__getIterator", ForeachIterator.class, TraceInfo.class, Memory.class, Boolean.TYPE, Boolean.TYPE);
    String name = "~foreach~" + method.nextStatementIndex(ForeachIterator.class);
    LocalVariable foreachVariable = method.getLocalVariable(name);
    if (foreachVariable == null)
        foreachVariable = method.addLocalVariable(name, l, ForeachIterator.class);
    /*LocalVariable foreachVariable = method.addLocalVariable(
                "~foreach~" + method.nextStatementIndex(ForeachIterator.class), l, ForeachIterator.class
        );*/
    foreachVariable.setEndLabel(end);
    expr.writeVarStore(foreachVariable, false, false);
    method.pushJump(end, start);
    add(start);
    expr.writeVarLoad(foreachVariable);
    expr.writeSysDynamicCall(ForeachIterator.class, "next", Boolean.TYPE);
    add(new JumpInsnNode(IFEQ, end));
    expr.stackPop();
    // $key
    if (token.getKey() != null) {
        LocalVariable key = method.getLocalVariable(token.getKey().getName());
        expr.checkAssignableVar(token.getKey());
        expr.writeVarLoad(foreachVariable);
        expr.writeSysDynamicCall(ForeachIterator.class, "getMemoryKey", Memory.class);
        if (token.isKeyReference()) {
            throw new FatalException("Key element cannot be a reference", token.getKey().toTraceInfo(compiler.getContext()));
        // writeVarStore(key, false, false);
        } else
            expr.writeVarAssign(key, null, false, false);
    }
    // $var
    // LocalVariable variable = method.getLocalVariable(token.getValue().getName());
    Token last = token.getValue().getLast();
    VariableExprToken var = null;
    if (last instanceof DynamicAccessExprToken) {
        DynamicAccessExprToken setter = (DynamicAccessExprToken) last;
        ExprStmtToken value = new ExprStmtToken(this.env, this.compiler.getContext(), token.getValue().getTokens());
        value.getTokens().remove(value.getTokens().size() - 1);
        value.updateAsmExpr(this.env, this.compiler.getContext());
        expr.writeExpression(value, true, false);
        expr.writeVarLoad(foreachVariable);
        expr.writeSysDynamicCall(ForeachIterator.class, "getValue", Memory.class);
        if (!token.isValueReference())
            expr.writePopImmutable();
        expr.writeDynamicAccessInfo(setter, false);
        expr.writeGetStatic("$CALL_PROP_CACHE", PropertyCallCache.class);
        expr.writePushConstInt(method.clazz.getAndIncCallPropCount());
        expr.writeSysStaticCall(ObjectInvokeHelper.class, "assignProperty", Memory.class, Memory.class, Memory.class, String.class, Environment.class, TraceInfo.class, PropertyCallCache.class, int.class);
    } else {
        if (token.getValue().getSingle() instanceof VariableExprToken)
            expr.checkAssignableVar(var = (VariableExprToken) token.getValue().getSingle());
        ExprStmtToken value = token.getValue();
        expr.writeVarLoad(foreachVariable);
        expr.writeSysDynamicCall(ForeachIterator.class, "getValue", Memory.class);
        if (value.isSingle() && value.getSingle() instanceof ListExprToken) {
            ListExprToken listExprToken = (ListExprToken) value.getSingle();
            if (!token.isValueReference() && !listExprToken.isHasRef()) {
                expr.writePopImmutable();
            }
            ListCompiler listCompiler = (ListCompiler) expr.getCompiler(ListExprToken.class);
            listCompiler.write(listExprToken, false, false);
        } else {
            if (!token.isValueReference())
                expr.writePopImmutable();
            expr.writeExpression(value, true, false);
            if (expr.stackPeek().immutable)
                expr.unexpectedToken(value.getLast());
            expr.writeSysStaticCall(Memory.class, token.isValueReference() ? "assignRefRight" : "assignRight", Memory.class, Memory.class, Memory.class);
        }
    }
    expr.writePopAll(1);
    /*
        if (token.isValueReference())
            writeVarStore(variable, false, false);
        else
            writeVarAssign(variable, false, true); */
    // body
    expr.write(BodyStmtToken.class, token.getBody());
    add(new JumpInsnNode(GOTO, start));
    add(end);
    /*if (compiler.getLangMode() == LangMode.JPHP){
            if (token.isValueReference() && var != null){
                expr.writeVarLoad(var.getName());
                expr.writeSysDynamicCall(Memory.class, "unset", void.class);
            }
        }*/
    method.popJump();
    expr.writeUndefineVariables(token.getLocal());
    method.prevStatementIndex(ForeachIterator.class);
}

Example 49 with JumpInsnNode

use of org.objectweb.asm.tree.JumpInsnNode in project jphp by jphp-compiler.

the class JumpCompiler method write.

@Override
public void write(JumpStmtToken token) {
    int level = token.getLevel();
    JumpItem jump = method.getJump(level);
    if (jump == null) {
        env.error(token.toTraceInfo(compiler.getContext()), ErrorType.E_COMPILE_ERROR, level == 1 ? Messages.ERR_CANNOT_JUMP.fetch() : Messages.ERR_CANNOT_JUMP_TO_LEVEL.fetch(level));
        return;
    }
    if (token instanceof ContinueStmtToken) {
        add(new JumpInsnNode(GOTO, jump.continueLabel));
    } else if (token instanceof BreakStmtToken) {
        add(new JumpInsnNode(GOTO, jump.breakLabel));
    }
}