From abe7e449143052b07fae688da690c2a7d387a291 Mon Sep 17 00:00:00 2001
From: Mike Buland <mike@xagasoft.com>
Date: Thu, 14 Nov 2013 15:35:47 -0700
Subject: Fixed (?) parsing order of operations bug, added unit tests.

---
 src/unitparser.cpp | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 src/unitparser.cpp

(limited to 'src/unitparser.cpp')

diff --git a/src/unitparser.cpp b/src/unitparser.cpp
new file mode 100644
index 0000000..891f7b3
--- /dev/null
+++ b/src/unitparser.cpp
@@ -0,0 +1,39 @@
+#include "unitparser.h"
+#include "parser.h"
+#include "lexer.h"
+
+#include <bu/sio.h>
+#include <bu/streamstack.h>
+#include <bu/membuf.h>
+
+UnitParser::UnitParser()
+{
+    setName("Parser");
+    add( static_cast<Bu::UnitSuite::Test>(&UnitParser::order1),
+            "order1", Bu::UnitSuite::expectPass );
+}
+
+UnitParser::~UnitParser()
+{
+}
+
+Bu::String parse( const Bu::String sEq, int iScale=0, int iRadix=10 )
+{
+    Bu::MemBuf mbIn( sEq );
+    Bu::MemBuf mbOut;
+    Lexer lex( mbIn );
+    lex.setScale( 5 );
+    Parser parser( lex, mbOut );
+    parser.parse();
+    return mbOut.getString().trimWhitespace();
+}
+
+void UnitParser::order1()
+{
+    unitTest(parse("2+3*5") == "17");
+    unitTest(parse("2+3-5") == "0");
+    unitTest(parse("(2+3)*5") == "25");
+    unitTest(parse("1.59*40/24*21", 5) == "55.125");
+    unitTest(parse("1.59*40/(24*21)", 5) == "0.125"); // bc says it's this: "0.12619");
+}
+
-- 
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