Luke/snow
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat: 增加字符串字面量的转义符和 Unicode 转义解析

Browse Source 
- 引入 StringEscape 工具类用于字符串转义
- 在解析字符串字面量时，去除首尾引号
- 对字符串内部内容进行转义符和 Unicode 转义解析
This commit is contained in:
Luke 2025-08-27 10:43:34 +08:00
parent e75a60026d
commit 49b5e61e8e
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/main/java/org/jcnc/snow/compiler/parser/expression/StringLiteralParselet.java
View File

@ -1,5 +1,6 @@
package org.jcnc.snow.compiler.parser.expression; package org.jcnc.snow.compiler.parser.expression;
import org.jcnc.snow.common.StringEscape;
import org.jcnc.snow.compiler.lexer.token.Token; import org.jcnc.snow.compiler.lexer.token.Token;
import org.jcnc.snow.compiler.parser.ast.base.ExpressionNode; import org.jcnc.snow.compiler.parser.ast.base.ExpressionNode;
import org.jcnc.snow.compiler.parser.ast.StringLiteralNode; import org.jcnc.snow.compiler.parser.ast.StringLiteralNode;
@ -26,8 +27,14 @@ public class StringLiteralParselet implements PrefixParselet {
*/ */
@Override @Override
public ExpressionNode parse(ParserContext ctx, Token token) { public ExpressionNode parse(ParserContext ctx, Token token) {
// 去除首尾引号
String raw = token.getRaw(); String raw = token.getRaw();
String content = raw.substring(1, raw.length() - 1); String inner = raw.substring(1, raw.length() - 1);
return new StringLiteralNode(content, new NodeContext(token.getLine(), token.getCol(), ctx.getSourceName())); // 解析转义符与 Unicode 转义
String value = StringEscape.unescape(inner);
return new StringLiteralNode(
value,
new NodeContext(token.getLine(), token.getCol(), ctx.getSourceName())
);
} }
} }