[new grammar] csharp v8-spec (ECMA-334 8th edition)#4789
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kaby76 wants to merge 6 commits intoantlr:masterfrom
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[new grammar] csharp v8-spec (ECMA-334 8th edition)#4789kaby76 wants to merge 6 commits intoantlr:masterfrom
kaby76 wants to merge 6 commits intoantlr:masterfrom
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kaby76
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Mar 13, 2026
kaby76
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- Add CSharp v8-spec grammar targeting ECMA-334 8th edition (C# 8.0)
- Convert grammars to target-agnostic format: all inline actions replaced with this.PascalCase() calls; implementations in CSharpLexerBase.cs and CSharpParserBase.cs under CSharp/
- Add superClass options in both .g4 files; remove empty support .g4 imports
- Port v7 preprocessor approach: DIRECTIVE channel, DIRECTIVE_MODE, NextToken() override, SkipFalseBlock(), recursive-descent evaluator, --DSYM CLI support
- Restore parse tree nodes elided by mutual-left-recursion removal via As*() reflection-based methods in CSharpParserBase
- Add using_declaration to declaration_statement (C# 8 non-block using var)
- Add MS extension expressions: __makeref, __reftype, __refvalue
- Add 11 C# 8 example test files (CSharp8*.cs) covering switch expressions, tuple/positional patterns, readonly members, default interface members, using declarations, static local functions, nullable reference types, async streams, indices and ranges, ??= operator, and misc features
- Add test-dotnet.sh for C# 8 (LangVersion=8.0, Nullable=enable)
- Fix AllInOneNoPreprocessor.cs: invalid expression statements (i << 5) replaced with assignments; invalid ref-returning expression body fixed
- Add CSharp v8-spec grammar targeting ECMA-334 8th edition (C# 8.0) - Convert grammars to target-agnostic format: all inline actions replaced with this.PascalCase() calls; implementations in CSharpLexerBase.cs and CSharpParserBase.cs under CSharp/ - Add superClass options in both .g4 files; remove empty support .g4 imports - Port v7 preprocessor approach: DIRECTIVE channel, DIRECTIVE_MODE, NextToken() override, SkipFalseBlock(), recursive-descent evaluator, --DSYM CLI support - Restore parse tree nodes elided by mutual-left-recursion removal via As*() reflection-based methods in CSharpParserBase - Add using_declaration to declaration_statement (C# 8 non-block using var) - Add MS extension expressions: __makeref, __reftype, __refvalue - Add 11 C# 8 example test files (CSharp8*.cs) covering switch expressions, tuple/positional patterns, readonly members, default interface members, using declarations, static local functions, nullable reference types, async streams, indices and ranges, ??= operator, and misc features - Add test-dotnet.sh for C# 8 (LangVersion=8.0, Nullable=enable) - Fix AllInOneNoPreprocessor.cs: invalid expression statements (i << 5) replaced with assignments; invalid ref-returning expression body fixed Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
CSharpParser.g4: make stackalloc_initializer_element_list optional so
that 'stackalloc T[] {}' (zero-length) parses correctly. This form is
valid C# 7.3+ and accepted by Roslyn but was rejected by the grammar.
Also adds testing/test.sh which clones Roslyn at version-2.8.2, extracts
C# source snippets from tests tagged LangVersion.CSharp7_3, and verifies
each one parses cleanly with the ANTLR grammar.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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