41 lines
884 B
Java
41 lines
884 B
Java
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package cd.backend.interpreter;
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import java.util.HashMap;
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import java.util.Map;
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import cd.ir.Symbol.VariableSymbol;
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// The stack:
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class StackFrame {
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private final JlObject thisPointer;
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private final Map<VariableSymbol, JlValue> variables;
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public StackFrame(JlObject thisPointer) {
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this.thisPointer = thisPointer;
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this.variables = new HashMap<VariableSymbol, JlValue>();
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}
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public JlValue var(VariableSymbol name) {
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if (variables.containsKey(name)) {
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return variables.get(name);
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}
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JlValue dflt = JlValue.getDefault(name.type);
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setVar(name, dflt);
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return dflt;
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}
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public void setVar(VariableSymbol name, JlValue val) {
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variables.put(name, val);
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}
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public String toString() {
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return String.format("StackFrame(%s) {%s}", System.identityHashCode(this), variables.toString());
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}
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public JlObject getThisPointer() {
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return thisPointer;
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}
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}
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