Add initial code, just to get started

1 files changed, 65 insertions, 0 deletions

diff --git a/apl9.h b/apl9.h
new file mode 100644
index 0000000..6b5445c
--- /dev/null
+++ b/apl9.h
@@ -0,0 +1,65 @@
+/* Global definitions of limits and constants */
+#define MAX_LINE_LENGTH 1024
+#define MAX_LINE_TOKENS 1024
+
+typedef enum
+{
+	ArrayTag,
+	FunctionTag,
+	HybridTag,
+	MonadicOpTag,
+	DyadicOpTag,
+	BoundFunctionTag, /* Function with left arg bound */
+	LParTag,
+	RParTag,
+	LCurlTag,
+	RCurlTag,
+	LBracketTag,
+	RBracketTag
+} datumTag;
+
+typedef enum
+{
+	AtypeInt
+} arrayDataType;
+
+/* Data types */
+typedef struct Array Array;
+typedef struct Datum Datum;
+
+struct Array
+{
+	arrayDataType type;
+	int rank;
+	int *shape;
+	union {
+		char *rawdata;
+		vlong *intdata;
+	};
+};
+
+struct Datum
+{
+	datumTag tag;
+	Rune *strrep;
+	union {
+		Array *array;
+	};
+};
+
+/* Function prototypes for the different source files */
+/* print.c */
+Rune *ppdatum(Datum);
+Rune *ppdatums(Datum *, int);
+
+/* lexer.c */
+Datum *lexline(Rune *, int *);
+
+/* array.c */
+Array *mkscalarint(vlong);
+
+/* eval.c */
+Datum *eval(Datum *, int *);
+
+/* Global variables */
+Rune *errormsg; /* eval.c */
\ No newline at end of file