Add -ast-print option to CLI for printing AST in C++ syntax

The output is not necessarily well formatted, to make it more readable
use clang-format, for example:

./build/src/frontend/cxx -ast-print tests/manual/source.cc | clang-format

Author: robertoraggi

packages/cxx-frontend/src/AST.ts

@@ -9623,13 +9623,6 @@ export class EnumSpecifierAST extends SpecifierAST {
     return Token.from(cxx.getASTSlot(this.getHandle(), 7), this.parser);
   }
 
-  /**
-   * Returns the location of the comma token in this node
-   */
-  getCommaToken(): Token | undefined {
-    return Token.from(cxx.getASTSlot(this.getHandle(), 8), this.parser);
-  }
-
   /**
    * Returns the enumeratorList of this node
    */
@@ -9656,6 +9649,13 @@ export class EnumSpecifierAST extends SpecifierAST {
     };
   }
 
+  /**
+   * Returns the location of the comma token in this node
+   */
+  getCommaToken(): Token | undefined {
+    return Token.from(cxx.getASTSlot(this.getHandle(), 9), this.parser);
+  }
+
   /**
    * Returns the location of the rbrace token in this node
    */
@@ -9863,15 +9863,29 @@ export class TypenameSpecifierAST extends SpecifierAST {
     );
   }
 
+  /**
+   * Returns the location of the template token in this node
+   */
+  getTemplateToken(): Token | undefined {
+    return Token.from(cxx.getASTSlot(this.getHandle(), 2), this.parser);
+  }
+
   /**
    * Returns the unqualifiedId of this node
    */
   getUnqualifiedId(): UnqualifiedIdAST | undefined {
     return AST.from<UnqualifiedIdAST>(
-      cxx.getASTSlot(this.getHandle(), 2),
+      cxx.getASTSlot(this.getHandle(), 3),
       this.parser,
     );
   }
+
+  /**
+   * Returns the isTemplateIntroduced attribute of this node
+   */
+  getIsTemplateIntroduced(): boolean {
+    return cxx.getASTSlot(this.getHandle(), 4) !== 0;
+  }
 }
 
 /**
@@ -11677,12 +11691,19 @@ export class TypeRequirementAST extends RequirementAST {
     );
   }
 
+  /**
+   * Returns the location of the template token in this node
+   */
+  getTemplateToken(): Token | undefined {
+    return Token.from(cxx.getASTSlot(this.getHandle(), 2), this.parser);
+  }
+
   /**
    * Returns the unqualifiedId of this node
    */
   getUnqualifiedId(): UnqualifiedIdAST | undefined {
     return AST.from<UnqualifiedIdAST>(
-      cxx.getASTSlot(this.getHandle(), 2),
+      cxx.getASTSlot(this.getHandle(), 3),
       this.parser,
     );
   }
@@ -11691,7 +11712,14 @@ export class TypeRequirementAST extends RequirementAST {
    * Returns the location of the semicolon token in this node
    */
   getSemicolonToken(): Token | undefined {
-    return Token.from(cxx.getASTSlot(this.getHandle(), 3), this.parser);
+    return Token.from(cxx.getASTSlot(this.getHandle(), 4), this.parser);
+  }
+
+  /**
+   * Returns the isTemplateIntroduced attribute of this node
+   */
+  getIsTemplateIntroduced(): boolean {
+    return cxx.getASTSlot(this.getHandle(), 5) !== 0;
   }
 }
 

packages/cxx-gen-ast/src/gen.ts

@@ -21,8 +21,8 @@
 // SOFTWARE.
 
 import { gen_ast_cc } from "./gen_ast_cc.js";
-import { gen_ast_dump_cc } from "./gen_ast_dump_cc.js";
-import { gen_ast_dump_h } from "./gen_ast_dump_h.js";
+import { gen_ast_printer_cc } from "./gen_ast_printer_cc.js";
+import { gen_ast_printer_h } from "./gen_ast_printer_h.js";
 import { gen_ast_fwd_h } from "./gen_ast_fwd_h.js";
 import { gen_ast_h } from "./gen_ast_h.js";
 import { gen_ast_kind_h } from "./gen_ast_kind_h.js";
@@ -40,14 +40,16 @@ import { gen_ast_encoder_cc } from "./gen_ast_encoder_cc.js";
 import { gen_ast_decoder_h } from "./gen_ast_decoder_h.js";
 import { gen_ast_decoder_cc } from "./gen_ast_decoder_cc.js";
 import { gen_ast_slot_ts } from "./gen_ast_slot_ts.js";
+import { gen_token_fwd_h } from "./gen_token_fwd_h.js";
+import { gen_tokenkind_ts } from "./gen_tokenkind_ts.js";
+import { gen_keywords_kwgen } from "./gen_keywords_kwgen.js";
+import { gen_ast_pretty_printer_h } from "./gen_ast_pretty_printer_h.js";
+import { gen_ast_pretty_printer_cc } from "./gen_ast_pretty_printer_cc.js";
 
 import * as fs from "fs";
 import * as path from "path";
 import * as process from "process";
 import * as child_process from "child_process";
-import { gen_token_fwd_h } from "./gen_token_fwd_h.js";
-import { gen_tokenkind_ts } from "./gen_tokenkind_ts.js";
-import { gen_keywords_kwgen } from "./gen_keywords_kwgen.js";
 
 const outdir = process.cwd();
 
@@ -65,14 +67,22 @@ gen_ast_visitor_h({
   ast,
   output: path.join(outdir, "src/parser/cxx/ast_visitor.h"),
 });
-gen_ast_dump_h({
+gen_ast_printer_h({
   ast,
   output: path.join(outdir, "src/parser/cxx/ast_printer.h"),
 });
-gen_ast_dump_cc({
+gen_ast_printer_cc({
   ast,
   output: path.join(outdir, "src/parser/cxx/ast_printer.cc"),
 });
+gen_ast_pretty_printer_h({
+  ast,
+  output: path.join(outdir, "src/parser/cxx/ast_pretty_printer.h"),
+});
+gen_ast_pretty_printer_cc({
+  ast,
+  output: path.join(outdir, "src/parser/cxx/ast_pretty_printer.cc"),
+});
 gen_ast_kind_h({ ast, output: path.join(outdir, "src/parser/cxx/ast_kind.h") });
 gen_ast_slot_h({ ast, output: path.join(outdir, "src/parser/cxx/ast_slot.h") });
 gen_ast_slot_cc({