From 71dc99170a8dbc126f762f42500567a438420a21 Mon Sep 17 00:00:00 2001
From: David Phillips <david@sighup.nz>
Date: Mon, 6 Aug 2018 01:01:37 +1200
Subject: Pad out parser with calls to stubs

---
 gate.c  | 11 +++++++++--
 gate.h  |  4 +++-
 lex.h   |  6 ++++++
 parse.c | 31 +++++++++++++++++++++++++------
 4 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/gate.c b/gate.c
index f745143..a657194 100644
--- a/gate.c
+++ b/gate.c
@@ -44,6 +44,13 @@ gate_add_generic(struct gate *array, size_t array_index, char *name, enum BINARY
 	return 0;
 }
 
+int
+gate_add(enum TOKEN_TYPE op, char *name, char *left, char *right) {
+	/* FIXME */
+	fprintf(stderr, "bop on %s and %s for gate %s not implemented", left, right, name);
+	return 1;
+}
+
 struct gate*
 gate_get_input_by_name(char *name) {
 	struct gate *res = NULL;
@@ -80,7 +87,7 @@ gate_input_add(char *name) {
 	return res;
 }
 
-int
+/*int
 gate_add(char *name, enum BINARY (*operation)(enum BINARY, enum BINARY), struct gate *in1, struct gate *in2) {
 	if (count_guard(gate_count, GATE_MAX, "gates")) {
 		return 1;
@@ -90,7 +97,7 @@ gate_add(char *name, enum BINARY (*operation)(enum BINARY, enum BINARY), struct
 	gate_count++;
 
 	return 0;
-}
+}*/
 
 void
 gate_free_all() {
diff --git a/gate.h b/gate.h
index bd5dc65..e0e4b61 100644
--- a/gate.h
+++ b/gate.h
@@ -3,6 +3,7 @@
 
 #include <stddef.h>
 
+#include "lex.h"
 #include "logic.h"
 
 enum NODE_TYPE {
@@ -21,7 +22,8 @@ struct gate {
 void gate_update_output(struct gate *);
 int gate_input_add(char *name);
 struct gate* gate_get_input_by_name(char *name);
-int gate_add(char *name, enum BINARY (*operation)(enum BINARY, enum BINARY), struct gate *in1, struct gate *in2);
+int gate_add(enum TOKEN_TYPE op, char *name, char *left, char* right);
+//int gate_add(char *name, enum BINARY (*operation)(enum BINARY, enum BINARY), struct gate *in1, struct gate *in2);
 int tick(void);
 void gate_init(void);
 void gate_dump(void);
diff --git a/lex.h b/lex.h
index 6c4f819..4c6662b 100644
--- a/lex.h
+++ b/lex.h
@@ -1,3 +1,8 @@
+#ifndef HENCE_LEX_H
+#define HENCE_LEX_H
+
+#include <stdio.h>
+
 #define MAX_IDENT_LENGTH 128
 
 enum TOKEN_TYPE {
@@ -35,3 +40,4 @@ struct token {
 struct token* lex_file(FILE*);
 const char *get_token_description(enum TOKEN_TYPE);
 
+#endif
diff --git a/parse.c b/parse.c
index 5bd56e3..d955bc4 100644
--- a/parse.c
+++ b/parse.c
@@ -76,10 +76,31 @@ kerchunk() {
 /** Parsers ******************************************************************/
 
 int
+parse_bop(char *ident) {
+	char *l = NULL;
+	char *r = NULL;
+
+	EXPECT_CRITICAL(TOK_IDENT);
+	l = cursor->value;
+	kerchunk();
+
+	EXPECT_CRITICAL(TOK_IDENT);
+	r = cursor->value;
+	kerchunk();
+
+	return gate_add(cursor->type, ident, l, r);
+}
+
+int
 parse_expr(void) {
-	/* FIXME write wrapper to exit on fail */
+	char *ident = NULL;
+
 	EXPECT_AND_DISCARD_CRITICAL(TOK_EXPR);
-	EXPECT_AND_DISCARD_CRITICAL(TOK_IDENT); /* FIXME do something, don't discard */
+
+	EXPECT_CRITICAL(TOK_IDENT);
+	ident = cursor->value;
+	kerchunk();
+
 	EXPECT_AND_DISCARD_CRITICAL(TOK_COLON);
 
 	switch(cursor->type) {
@@ -90,8 +111,7 @@ parse_expr(void) {
 		case TOK_NOR: /* fallthrough */
 		case TOK_NAND:
 			kerchunk();
-			EXPECT_AND_DISCARD_CRITICAL(TOK_IDENT); /* FIXME don't discard */
-			EXPECT_AND_DISCARD_CRITICAL(TOK_IDENT); /* FIXME don't discard */
+			parse_bop(ident);
 			break;
 		case TOK_NOT:
 			kerchunk();
@@ -133,8 +153,7 @@ parse(const char *fname, FILE *f, struct token *t) {
 			case TOK_INPUT:
 				kerchunk();
 				expect(TOK_IDENT);
-				emit("Debug: input is named %s\n", cursor->value);
-				/* FIXME do something */
+				gate_input_add(cursor->value);
 				kerchunk();
 				break;
 			case TOK_EXPR:
-- 
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