58 lines
1.2 KiB
Java
58 lines
1.2 KiB
Java
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import java.util.Collections;
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public class VariableType {
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/**
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* The base type of this variable which remove all ending stars.
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*/
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private String mBaseType;
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/**
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* The pointer level of this type. It is equal with the count of stars.
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*/
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private int mPointerLevel;
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public VariableType(String ctype) {
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fromCType(ctype);
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}
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private VariableType(String base_type, int pointer_level) {
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mBaseType = base_type;
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mPointerLevel = pointer_level;
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}
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public void fromCType(String ctype) {
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if (ctype.isEmpty())
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throw new IllegalArgumentException("empty string can not be parsed.");
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int len = ctype.length();
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int star_pos = ctype.indexOf('*');
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if (star_pos == -1) {
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// no star
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mBaseType = ctype;
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mPointerLevel = 0;
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} else {
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// has star
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if (star_pos == 0)
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throw new IllegalArgumentException("base type not found.");
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mBaseType = ctype.substring(0, star_pos);
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mPointerLevel = len - star_pos;
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}
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}
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public String toCType() {
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return mBaseType + String.join("", Collections.nCopies(mPointerLevel, "*"));
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}
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public String getBaseType() {
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return mBaseType;
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}
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public boolean isPointer() {
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return mPointerLevel != 0;
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}
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public VariableType getPointerOfThis() {
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return new VariableType(mBaseType, mPointerLevel);
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}
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}
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