From 22558704460b19425d28cc91b2565c7964ed7a19 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Wed, 23 May 2018 17:58:57 +0200
Subject: Create compile-able demo that doesn't do anything

Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
 database.h | 171 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 database.h

(limited to 'database.h')

diff --git a/database.h b/database.h
new file mode 100644
index 00000000..81205f20
--- /dev/null
+++ b/database.h
@@ -0,0 +1,171 @@
+#include <stdint.h>
+#include <vector>
+#include <string>
+#include <unordered_set>
+#include <unordered_map>
+
+// replace with proper IdString later
+typedef std::string IdString;
+
+// replace with haslib later
+template<typename T> using pool = std::unordered_set<T>;
+template<typename T, typename U> using dict = std::unordered_map<T, U>;
+using std::vector;
+
+// -------------------------------------------------------
+// Arch-specific declarations
+
+struct ObjId
+{
+	uint8_t tile_x = 0, tile_y = 0;
+	uint16_t index = 0;
+
+	bool nil() const {
+		return !tile_x && !tile_y && !index;
+	}
+} __attribute__((packed));
+
+namespace std
+{
+	template<> struct hash<ObjId>
+        {
+		std::size_t operator()(const ObjId &obj) const noexcept
+		{
+			std::size_t result = std::hash<int>{}(obj.index);
+			result ^= std::hash<int>{}(obj.tile_x) + 0x9e3779b9 + (result << 6) + (result >> 2);
+			result ^= std::hash<int>{}(obj.tile_y) + 0x9e3779b9 + (result << 6) + (result >> 2);
+			return result;
+		}
+	};
+}
+
+struct ObjIterator
+{
+	ObjId *ptr = nullptr;
+
+	void operator++() { ptr++; }
+	bool operator!=(const ObjIterator &other) const { return ptr != other.ptr; }
+	ObjId operator*() const { return *ptr; }
+};
+
+struct ObjRange
+{
+	ObjIterator b, e;
+	ObjIterator begin() const { return b; }
+	ObjIterator end() const { return e; }
+};
+
+struct BelPin
+{
+	ObjId bel;
+	IdString pin;
+};
+
+struct BelPinIterator
+{
+	BelPin *ptr = nullptr;
+
+	void operator++() { ptr++; }
+	bool operator!=(const BelPinIterator &other) const { return ptr != other.ptr; }
+	BelPin operator*() const { return *ptr; }
+};
+
+struct BelPinRange
+{
+	BelPinIterator b, e;
+	BelPinIterator begin() const { return b; }
+	BelPinIterator end() const { return e; }
+};
+
+struct GuiLine
+{
+	float x1, y1, x2, y2;
+};
+
+struct Chip
+{
+	// ...
+
+	Chip(std::string cfg);
+
+	void setBelActive(ObjId bel, bool active);
+	bool getBelActive(ObjId bel);
+
+	ObjId getObjByName(IdString name) const;
+	IdString getObjName(ObjId obj) const;
+
+	ObjRange getBels() const;
+	ObjRange getBelsByType(IdString type) const;
+	IdString getBelType(ObjId bel) const;
+
+	void getObjPosition(ObjId obj, float &x, float &y) const;
+	vector<GuiLine> getGuiLines(ObjId obj) const;
+
+	ObjRange getWires() const;
+	ObjRange getWiresUphill(ObjId wire) const;
+	ObjRange getWiresDownhill(ObjId wire) const;
+	ObjRange getWiresBidir(ObjId wire) const;
+	ObjRange getWireAliases(ObjId wire) const;
+
+	// the following will only operate on / return "active" BELs
+	// multiple active uphill BELs for a wire will cause a runtime error
+	ObjId getWireBelPin(ObjId bel, IdString pin) const;
+	BelPin getBelPinUphill(ObjId wire) const;
+	BelPinRange getBelPinsDownhill(ObjId wire) const;
+};
+
+// -------------------------------------------------------
+// Generic declarations
+
+struct PortRef
+{
+	IdString cell_name;
+	IdString port_name;
+};
+
+struct NetInfo
+{
+	IdString name;
+	PortRef driver;
+	vector<PortRef> users;
+	dict<IdString, std::string> attrs;
+
+	// wire -> delay
+	dict<ObjId, float> wires;
+};
+
+enum PortType
+{
+	PORT_IN = 0,
+	PORT_OUT = 1,
+	PORT_INOUT = 2
+};
+
+struct PortInfo
+{
+	IdString name, net;
+	PortType type;
+};
+
+struct CellInfo
+{
+	IdString name, type;
+	dict<IdString, PortInfo> ports;
+	dict<IdString, std::string> attrs, params;
+
+	ObjId bel;
+	// cell_port -> bel_pin
+	dict<IdString, IdString> pins;
+};
+
+struct Design
+{
+	struct Chip chip;
+
+	Design(std::string chipCfg) : chip(chipCfg) {
+		// ...
+	}
+
+	dict<IdString, NetInfo*> nets;
+	dict<IdString, CellInfo*> cells;
+};
-- 
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