59 lines
1.9 KiB
Java
Executable File
59 lines
1.9 KiB
Java
Executable File
package frontend.ast.val;
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import java.util.ArrayList;
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import error.Errors;
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import frontend.ast.Node;
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import frontend.ast.SyntaxType;
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import frontend.ast.exp.ConstExp;
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import frontend.ast.token.TokenNode;
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import frontend.lexer.TokenStream;
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import frontend.lexer.TokenType;
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public class ConstInitVal extends Node {
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public ConstInitVal(TokenStream ts) {
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super(SyntaxType.CONST_INIT_VAL, ts);
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}
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public void parse(Errors errors) {
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if (getCurrToken().getType() != TokenType.LBRACE) {
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ConstExp cep = new ConstExp(this.ts);
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cep.parse(errors);
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addChild(cep);
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} else {
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TokenNode lbrace = new TokenNode(this.ts);
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addChild(lbrace);
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if (getCurrToken().getType() != TokenType.RBRACE) {
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while (true) { // judge rbrace or not ??
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ConstExp cep = new ConstExp(this.ts);
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cep.parse(errors);
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addChild(cep);
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if (getCurrToken().getType() == TokenType.COMMA) {
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TokenNode comma = new TokenNode(this.ts);
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addChild(comma);
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} else {
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break;
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}
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}
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}
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TokenNode rbrace = new TokenNode(this.ts);
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addChild(rbrace);
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}
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}
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public ArrayList<Integer> getValue() {
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ArrayList<Integer> valueList = new ArrayList<>();
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if (getChild(0) instanceof ConstExp) {
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valueList.add(((ConstExp) getChild(0)).getValue());
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return valueList;
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} else {
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for (int i = 1; i < getChildren().size(); i += 2) {
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if (getChild(i) instanceof ConstExp) {
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valueList.add(((ConstExp) getChild(i)).getValue());
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}
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}
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return valueList;
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}
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}
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}
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