Sha256: f72373ee14f977ffd976e04f1a8d3fd5304a65f89db0005d2c1b0b4ec624adec
Contents?: true
Size: 1.77 KB
Versions: 135
Compression:
Stored size: 1.77 KB
Contents
/**
* Copyright 2005-2007 Xue Yong Zhi
* Distributed under the BSD License
*/
package com.xruby.compiler.codedom;
import java.util.ArrayList;
public abstract class Expression implements Visitable {
protected int position;
protected boolean newLine = false;
protected boolean conditionIsAlwayTrue(Expression e) {
if (e instanceof IntegerExpression) {
return true;
} else if (e instanceof FloatExpression) {
return true;
} else if (e instanceof StringExpression) {
return true;
} else if (e instanceof TrueExpression) {
return true;
}
return false;
}
/// Used for optimazation, so we will not compile dead code
boolean willNotBeExecuted() {
return false;
}
protected boolean conditionIsAlwayFalse(Expression e) {
if (e instanceof FalseExpression) {
return true;
} else if (e instanceof NilExpression) {
return true;
}
return false;
}
void getNewlyAssignedVariables(ISymbolTable symboltable, ArrayList<String> result) {
//Default behavior is do nothing
}
void pullBlock(ArrayList<Block> result) {
//Default behavior is do nothing
}
public void getFrequentlyUsedIntegers(ArrayList<Integer> result) {
//Default behavior is do nothing
}
public void setPosition(int position) {
this.position = position;
}
public int getPosition() {
return position;
}
public boolean shouldlabelNewLine() {
return newLine;
}
public void setNewLine(boolean newLine) {
this.newLine = newLine;
}
public void addLineno(CodeVisitor visitor) {
if(this.shouldlabelNewLine()) {
// TODO: Add Line Number info
int lineNumber = this.getPosition();
visitor.visitLineLabel(lineNumber);
}
}
}
Version data entries
135 entries across 135 versions & 2 rubygems