From 27540745feb1423c92529cc10c93fe4331801c00 Mon Sep 17 00:00:00 2001
From: Robin Jadoul <robin.jadoul@gmail.com>
Date: Sat, 28 May 2016 14:40:52 +0200
Subject: [PATCH] Add another example
---
examples/keywords/keywordsLexer.lxs | 6 +++++
examples/keywords/main.cpp | 37 +++++++++++++++++++++++++++++
2 files changed, 43 insertions(+)
create mode 100644 examples/keywords/keywordsLexer.lxs
create mode 100644 examples/keywords/main.cpp
diff --git a/examples/keywords/keywordsLexer.lxs b/examples/keywords/keywordsLexer.lxs
new file mode 100644
index 0000000..5af824f
--- /dev/null
+++ b/examples/keywords/keywordsLexer.lxs
@@ -0,0 +1,6 @@
+MODULE = (M|m)odule
+END = [Ee]nd
+IF = if|If
+IDENT = [a-zA-Z_][a-zA-Z_0-9]*
+ignore = \n| |\t
+UNKNOWN = .
diff --git a/examples/keywords/main.cpp b/examples/keywords/main.cpp
new file mode 100644
index 0000000..0f4ecb1
--- /dev/null
+++ b/examples/keywords/main.cpp
@@ -0,0 +1,37 @@
+#include "KeywordsLexer.h"
+#include <iostream>
+
+int main() {
+ KeywordsLexer lex(std::cin);
+ try {
+ while (true) {
+ KeywordsLexer::Token tok = lex.nextToken();
+ switch (tok.type) {
+ case KeywordsLexer::MODULE:
+ std::cout << "MODULE: ";
+ break;
+ case KeywordsLexer::END:
+ std::cout << "END: ";
+ break;
+ case KeywordsLexer::IF:
+ std::cout << "IF: ";
+ break;
+ case KeywordsLexer::IDENT:
+ std::cout << "IDENT: ";
+ break;
+ case KeywordsLexer::UNKNOWN:
+ std::cout << "UNKNOWN: ";
+ break;
+ case KeywordsLexer::nonmatching: case KeywordsLexer::ignore:
+ break; //These can never occur, just to satisfy the compiler...
+ }
+ std::cout << "\"" << tok.content << "\"" << std::endl;
+ }
+ }
+ catch (KeywordsLexer::NoMatch& err) {
+ std::cout << "'" << lex.peek() << "'" << " did not match" << std::endl;
+ }
+ catch (KeywordsLexer::NoMoreTokens& err) {
+ std::cout << "DONE" << std::endl;
+ }
+}