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const std = @import("std");
const parse = @import("parser.zig");
pub const Generator = struct {
root: []const parse.NodeStmt,
allocator: std.mem.Allocator,
code: std.ArrayList(u8),
pub fn init(allocator: std.mem.Allocator, stmts: []const parse.NodeStmt) Generator {
return .{
.root = stmts,
.allocator = allocator,
.code = std.ArrayList(u8).init(allocator),
};
}
pub fn deinit(self: *Generator) void {
self.code.deinit();
}
fn genExit(self: *Generator, expr: parse.NodeExpr) ![]const u8 {
return try std.fmt.allocPrint(self.allocator,
\\ mov rax, 60
\\ mov rdi, {d}
\\ syscall
\\
, .{switch (expr) {
.intLit => expr.intLit.intlit.intLit,
else => return error.NotImplemented,
}});
}
fn genValue(self: *Generator) ![]const u8 {
_ = self;
return error.NotImplemented;
}
pub fn generate(self: *Generator) ![]const u8 {
try self.code.appendSlice(
\\global _start:
\\
);
for (self.root) |stmt| {
const code = switch (stmt) {
.exit => try self.genExit(stmt.exit.expr),
.value => try self.genValue(),
};
try self.code.appendSlice(code);
}
return self.code.items;
}
};
|
