From b691e286722b9bd06f9199a47c07f12675822c2e Mon Sep 17 00:00:00 2001
From: Jeremy Rand <jeremy@moleman>
Date: Wed, 24 Jul 2013 10:06:38 -0500
Subject: [PATCH] Implement some basic mode tracking

---
 Makefile         |  5 +++--
 abCalcExpr.h     |  2 +-
 abCalcExprReal.h |  8 ++++++++
 abCalcMode.c     | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 abCalcMode.h     | 33 +++++++++++++++++++++++++++++++++
 5 files changed, 92 insertions(+), 3 deletions(-)
 create mode 100644 abCalcExprReal.h
 create mode 100644 abCalcMode.c
 create mode 100644 abCalcMode.h

diff --git a/Makefile b/Makefile
index b639fb5..d54236f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,12 @@
-OBJS=abCalc.o abCalcExpr.o abCalcExprReal.o abCalcExprInt.o abCalcStack.o
+OBJS=abCalc.o abCalcExpr.o abCalcExprReal.o abCalcExprInt.o abCalcStack.o abCalcMode.o
 NAME=abCalc
 
 all: $(NAME)
 
 abCalcExpr.o: abCalcExpr.h
-abCalcExprReal.o: abCalcExpr.h
+abCalcExprReal.o: abCalcExpr.h abCalcExprReal.h
 abCalcStack.o: abCalcExpr.h abCalcStack.h
+abCalcMode.o: abCalcMode.h abCalcExpr.h
 
 $(NAME): $(OBJS)
 	cc -o $(NAME) $(OBJS)
diff --git a/abCalcExpr.h b/abCalcExpr.h
index 0f039ab..b04a3c3 100644
--- a/abCalcExpr.h
+++ b/abCalcExpr.h
@@ -14,7 +14,7 @@ typedef enum abCalcExprType {
 
 
 typedef double abCalcRealType;
-typedef long abCalcIntType;
+typedef unsigned long abCalcIntType;
 
 
 typedef struct abCalcExpr {
diff --git a/abCalcExprReal.h b/abCalcExprReal.h
new file mode 100644
index 0000000..7493c7a
--- /dev/null
+++ b/abCalcExprReal.h
@@ -0,0 +1,8 @@
+/* 
+    abCalcExprReal.h
+        By: Jeremy Rand
+ */
+
+
+void abCalcExprRealInit(void);
+
diff --git a/abCalcMode.c b/abCalcMode.c
new file mode 100644
index 0000000..1f04da1
--- /dev/null
+++ b/abCalcMode.c
@@ -0,0 +1,47 @@
+/* 
+    abCalcMode.c
+        By: Jeremy Rand
+ */
+
+
+#include "abCalcMode.h"
+
+
+
+static abCalcModeIntBase gBase = abCalcModeDecBase;
+static int gIntWidth = AB_CALC_MODE_MAX_INT_WIDTH;
+
+
+void abCalcModeInit(void)
+{
+}
+
+
+abCalcModeIntBase abCalcModeGetBase(void)
+{
+    return gBase;
+}
+
+
+void abCalcModeSetBase(abCalcModeIntBase base)
+{
+    if ((base >= abCalcModeIntBaseMin) &&
+        (base < abCalcModeIntBaseMax)) {
+        gBase = base;
+    }
+}
+
+
+int abCalcModeGetIntWidth(void)
+{
+    return gIntWidth;
+}
+
+
+void abCalcModeSetIntWidth(int width)
+{
+    if ((width > 0) &&
+        (width <= AB_CALC_MODE_MAX_INT_WIDTH)) {
+        gIntWidth = width;
+    }
+}
diff --git a/abCalcMode.h b/abCalcMode.h
new file mode 100644
index 0000000..84eaa75
--- /dev/null
+++ b/abCalcMode.h
@@ -0,0 +1,33 @@
+/* 
+    abCalcMode.h
+        By: Jeremy Rand
+ */
+
+
+#include "abCalcExpr.h"
+
+
+typedef enum abCalcModeIntBase
+{
+    abCalcModeIntBaseMin = 0,
+    abCalcModeBinBase = 0,
+    abCalcModeOctBase,
+    abCalcModeDecBase,
+    abCalcModeHexBase,
+
+    abCalcModeIntBaseMax
+} abCalcModeIntBase;
+
+
+#define AB_CALC_MODE_MAX_INT_WIDTH ((sizeof(abCalcIntType) * 8))
+
+
+void abCalcModeInit(void);
+
+abCalcModeIntBase abCalcModeGetBase(void);
+
+void abCalcModeSetBase(abCalcModeIntBase base);
+
+int abCalcModeGetIntWidth(void);
+
+void abCalcModeSetIntWidth(int width);