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package vaporize;
import cs132.vapor.ast.*;
import misc.*;
import java.util.ArrayList;
/**
* This class contains various generic methods for
* assembling common-use vaporm strings and managing
* the original input program.
*
* Robert Martin cries
*/
class Kettle {
ArrayList<String> vapor;
ArrayList<String> vaporm;
protected Kettle(ArrayList<String> vapor) {
MinimalLogger.info("Pouring program into kettle...");
this.vapor = vapor;
this.vaporm = new ArrayList<String>();
}
protected String get(Node n) {
/**
* Given the source position of a Node, returns the original line.
*/
return this.vapor.get(this.indexOf(n));
}
protected void replaceFunctionDeclare(VFunction prev, int in,
int out, int local) {
/**
* Replaces a function declaraction in the program
* with the vapor equivalent.
*/
String next = String.format("func %s [in %d, out %d, local %d]",
this.parseFuncName(prev),
in,
out,
local);
MinimalLogger.info(String.format("Replacing function declaraction %s with %s",
this.get(prev),
next));
this.set(prev, next);
}
protected String parseFuncName(VFunction func) {
/**
* Helper for replaceFunctionDeclare
* "func A_foo(this t.1)" -> "A_foo"
*/
String str = this.get(func);
int openParenIndex = str.indexOf('(');
return str.substring(5, openParenIndex).trim();
}
protected String spill() {
return null;
}
protected String backup() {
return null;
}
protected String dump() {
return String.join("\n", this.vapor);
}
private void set(Node n, String s) {
/**
* Sets the position of Node n in the original
* file to String s.
*/
this.vapor.set(this.indexOf(n), s);
}
protected int indexOf(Node n) {
return n.sourcePos.line-1;
}
// METHODS INTENDED TO BE USED WITH CFG
/**
* Needed because VBranch doesn't seem to
* keep track of this...
*/
protected int findLabelIndex(String str) {
int index = -3;
// is this guarenteed?
String search = str.substring(1);
String comp;
for (int i = 0; i < this.vapor.size(); ++i) {
if (!this.vapor.get(i).isEmpty()) {
comp = this.vapor.get(i).trim();
if (comp.substring(0, comp.length()-1)
.equals(search)) {
index = i;
break;
}
}
}
if (index == -3) {
MinimalLogger.severe(String.format("findLabelIndex could not compute label for %s!",
str.trim()));
}
// go to the section AFTER the label, and account for starting at zero
return index+2;
}
}
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