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[pseudo] Add a print-grammar option in the tool

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This is helpful for debugging purposes.

Differential Revision: https://reviews.llvm.org/D120724
This commit is contained in:
Haojian Wu 2022-03-01 15:57:13 +01:00
parent 91e9af32fc
commit 7f99e1870f
1 changed files with 3 additions and 0 deletions
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3
clang/tools/clang-pseudo/ClangPseudo.cpp
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@ -24,6 +24,7 @@ using llvm::cl::opt;
static opt<std::string>
Grammar("grammar", desc("Parse and check a BNF grammar file."), init(""));
static opt<bool> PrintGrammar("print-grammar", desc("Print the grammar."));
static opt<bool> PrintGraph("print-graph",
desc("Print the LR graph for the grammar"));
static opt<bool> PrintTable("print-table",
@ -60,6 +61,8 @@ int main(int argc, char *argv[]) {
}
llvm::outs() << llvm::formatv("grammar file {0} is parsed successfully\n",
Grammar);
if (PrintGrammar)
llvm::outs() << G->dump();
if (PrintGraph)
llvm::outs() << clang::syntax::pseudo::LRGraph::buildLR0(*G).dumpForTests(
*G);