50 lines
1.8 KiB
Java
50 lines
1.8 KiB
Java
package io.gitlab.jfronny.muscript.ast.math;
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import io.gitlab.jfronny.muscript.compiler.ExprWriter;
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import io.gitlab.jfronny.muscript.compiler.Order;
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import io.gitlab.jfronny.muscript.data.Scope;
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import io.gitlab.jfronny.muscript.ast.Expr;
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import io.gitlab.jfronny.muscript.ast.NumberExpr;
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import io.gitlab.jfronny.muscript.ast.literal.NumberLiteral;
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import java.io.IOException;
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public class Minus extends NumberExpr {
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public final NumberExpr minuend;
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public final NumberExpr subtrahend;
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public Minus(int chStart, int chEnd, NumberExpr minuend, NumberExpr subtrahend) {
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super(Order.Term, chStart, chEnd);
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this.minuend = minuend;
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this.subtrahend = subtrahend;
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}
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@Override
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public Double get(Scope dataRoot) {
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return minuend.get(dataRoot) - subtrahend.get(dataRoot);
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}
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@Override
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public NumberExpr optimize() {
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NumberExpr minuend = this.minuend.optimize();
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NumberExpr subtrahend = this.subtrahend.optimize();
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if (minuend instanceof NumberLiteral litM && subtrahend instanceof NumberLiteral litS)
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return Expr.literal(chStart, chEnd, litM.value - litS.value);
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if (minuend instanceof Minus minus)
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return new Minus(chStart, chEnd, minus.minuend, new Plus(minus.chStart, minus.chEnd, minus.subtrahend, subtrahend)).optimize();
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return new Minus(chStart, chEnd, minuend, subtrahend);
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}
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@Override
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public void decompile(ExprWriter writer) throws IOException {
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parenthesize(minuend, writer, false);
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writer.append(" - ");
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parenthesize(subtrahend, writer, true);
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}
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@Override
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public boolean equals(Object obj) {
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return obj instanceof Minus minus && minuend.equals(minus.minuend) && subtrahend.equals(minus.subtrahend);
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}
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}
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