[Mlir-commits] [mlir] [mlir][AsmParser] Expose `parseMinus()` (PR #106881)

[llvmlistbot at llvm.org]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-mlir-core

Author: Ivan Butygin (Hardcode84)

<details>
<summary>Changes</summary>

Found while working on custom expression type for my dialect.

Builtin `AffineExpr` uses low-level parser API which is not available for external users.

---
Full diff: https://github.com/llvm/llvm-project/pull/106881.diff


2 Files Affected:

- (modified) mlir/include/mlir/IR/OpImplementation.h (+6) 
- (modified) mlir/lib/AsmParser/AsmParserImpl.h (+10) 


``````````diff
diff --git a/mlir/include/mlir/IR/OpImplementation.h b/mlir/include/mlir/IR/OpImplementation.h
index ae412c7227f8ea..e2472eea8a3714 100644
--- a/mlir/include/mlir/IR/OpImplementation.h
+++ b/mlir/include/mlir/IR/OpImplementation.h
@@ -641,6 +641,12 @@ class AsmParser {
   /// Parse a '+' token if present.
   virtual ParseResult parseOptionalPlus() = 0;
 
+  /// Parse a '-' token.
+  virtual ParseResult parseMinus() = 0;
+
+  /// Parse a '-' token if present.
+  virtual ParseResult parseOptionalMinus() = 0;
+
   /// Parse a '*' token.
   virtual ParseResult parseStar() = 0;
 
diff --git a/mlir/lib/AsmParser/AsmParserImpl.h b/mlir/lib/AsmParser/AsmParserImpl.h
index b12687833e3fde..04250f63dcd253 100644
--- a/mlir/lib/AsmParser/AsmParserImpl.h
+++ b/mlir/lib/AsmParser/AsmParserImpl.h
@@ -226,6 +226,16 @@ class AsmParserImpl : public BaseT {
     return success(parser.consumeIf(Token::plus));
   }
 
+  /// Parses a '-' token.
+  ParseResult parseMinus() override {
+    return parser.parseToken(Token::minus, "expected '-'");
+  }
+
+  /// Parses a '-' token if present.
+  ParseResult parseOptionalMinus() override {
+    return success(parser.consumeIf(Token::minus));
+  }
+
   /// Parse a '|' token.
   ParseResult parseVerticalBar() override {
     return parser.parseToken(Token::vertical_bar, "expected '|'");

``````````

</details>


https://github.com/llvm/llvm-project/pull/106881