45 lines
1.4 KiB
Java
45 lines
1.4 KiB
Java
package abstractSyntaxTree.Statement;
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import TypeCheck.TypeCheckResult;
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import TypeCheck.AbstractType;
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import abstractSyntaxTree.Expression.IExpression;
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import org.objectweb.asm.MethodVisitor;
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import java.util.List;
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public class BlockStatement extends AbstractType implements IStatement{
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//We will need a parameter which holds the symbol table
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List<IStatement> statements;
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public BlockStatement(List<IStatement> statements){
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this.statements = statements;
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}
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@Override
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public TypeCheckResult typeCheck() throws Exception {
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TypeCheckResult result = new TypeCheckResult();
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if(statements.size() == 0){
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result.type = "void";
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}
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TypeCheckResult blockType = null;
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for (IStatement statement : statements) {
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TypeCheckResult typeOfCurrentStatement = statement.typeCheck();
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if (blockType == null) {
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blockType = typeOfCurrentStatement;
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} else if (!typeOfCurrentStatement.equals(blockType) && !blockType.equals("void")) {
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throw new IllegalArgumentException("different statement types");
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}
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}
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return result;
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}
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@Override
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public void CodeGen(MethodVisitor mv) throws Exception {
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for (IStatement statement : statements) {
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statement.CodeGen(mv); //TODO: I think we need to pass the symbol table here
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}
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}
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}
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