ANTLR树语法和StringTemplate代码翻译

发布于 2024-10-08 18:40:55 字数 1524 浏览 0 评论 0原文

我正在开发一个代码翻译项目,其示例 ANTLR 树语法如下:

start:               ^(PROGRAM declaration+) -> program_decl_tmpl();
declaration:         class_decl | interface_decl;
class_decl:          ^(CLASS ^(ID CLASS_IDENTIFIER))
                        -> class_decl_tmpl(cid={$CLASS_IDENTIFIER.text});

它的组模板文件如下所示:

group My;

program_decl_tmpl() ::= <<
*WHAT?*
>>

class_decl_tmpl(cid) ::= <<
public class <cid> {}
>>

基于此,我有以下问题:

解决方案,我根据 Terence 的建议添加解决方案:

start:             ^(PROGRAM d+=declaration+) -> program_decl_tmpl(decls={$d});
declaration:       cd = class_decl -> decl_tmpl(decl={$cd.st})
                 | id = interface_decl -> decl_tmpl(decl={$id.st});
class_decl:        ^(CLASS ^(ID CLASS_IDENTIFIER))
                       -> class_decl_tmpl(cid={$CLASS_IDENTIFIER.text});

模板如下:

group My;

program_decl_tmpl(decls) ::= <<
<decls>
>>

decl_tmpl(decl) ::= <<
<decl>
>>

class_decl_tmpl(cid) ::= <<
public class <cid> {}
>>

I am working on a code translation project with a sample ANTLR tree grammar as:

start:               ^(PROGRAM declaration+) -> program_decl_tmpl();
declaration:         class_decl | interface_decl;
class_decl:          ^(CLASS ^(ID CLASS_IDENTIFIER))
                        -> class_decl_tmpl(cid={$CLASS_IDENTIFIER.text});

The group template file for it looks like:

group My;

program_decl_tmpl() ::= <<
*WHAT?*
>>

class_decl_tmpl(cid) ::= <<
public class <cid> {}
>>

Based on this, I have these questions:

  • Everything works fine apart from that what I should express in WHAT? to say that a program is simply a list of class declarations to get the final generated output?
  • Is this approach averagely suitable for not so a high-level language?
  • I have also studied ANTLR Code Translation with String Templates, but it seems that this approach takes much advantage of interleaving code in tree grammar. Is it also possible to do it as much as possible just in String Templates?

SOLUTION, I add the solution based on what Terence proposed:

start:             ^(PROGRAM d+=declaration+) -> program_decl_tmpl(decls={$d});
declaration:       cd = class_decl -> decl_tmpl(decl={$cd.st})
                 | id = interface_decl -> decl_tmpl(decl={$id.st});
class_decl:        ^(CLASS ^(ID CLASS_IDENTIFIER))
                       -> class_decl_tmpl(cid={$CLASS_IDENTIFIER.text});

And the templates would be:

group My;

program_decl_tmpl(decls) ::= <<
<decls>
>>

decl_tmpl(decl) ::= <<
<decl>
>>

class_decl_tmpl(cid) ::= <<
public class <cid> {}
>>

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笙痞 2024-10-15 18:40:55

尝试

start: ^(PROGRAM d+=declaration+) -> program_decl_tmpl(decls=$d)

WHAT? = <decls>

Try

start: ^(PROGRAM d+=declaration+) -> program_decl_tmpl(decls=$d)

WHAT? = <decls>
~没有更多了~
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