Get owned predicates and basic preconditions working#19
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Get owned predicates and basic preconditions working#19
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This commit: - Adds an option to wrap any symbols with a 'cn.frames.get_local' if they're a frame local - Adds support for tracking all locals that have been currently set in lua (a little gross but need this to do lua work) - Adds support for dereferencing any pointer type frame locals
msaljuk
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Mar 10, 2026
| cn.frames.set_local("Or", cn.owned(cn.frames.get_local("random"), cn.spec_mode.PRE, 0)) | ||
| cn.error_stack.pop() | ||
| cn.error_stack.push(" *random == 0i32;\n ^~~~~~~~~~~~~~~~ ./lua_gen_output/basic_owned_example.c:5:3-19") | ||
| cn.assert(cn.equals(cn.c.get_integer(cn.frames.get_local("Or")), 0), cn.spec_mode.PRE) |
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For struct members, this might start to get considerably nesty/convoluted. I'll work on getting them working first but given time, I might try to break this up into multiple lines using local variables
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This CL:
Applyterms.ownedpredicates working in Lua. This required adding support for anownedfunction in the core lua runtime and then calling it duringcn_to_ail_resource. The resulting owned resource is then added to the frame locals as well usingset_localowned_xand create a stack typed variable with a name (e.g.struct_s_cn* s = owned_struct_s(origin);). In later CN statement translation, we don't have access to the full type (i.e. if it's a pointer, a pointer to what type) of our owned resource (see cn_to_ail_resource as an example). But that's okay, because the stack variable knows what type it is, and so we can spit out statements likecn.assert(Or_cn, cn_i32(0))and it's finecn.c.get_integer,cn.c.get_pointer,cn.c.peek_int_list). Therefore, I need to retain this info somewhere so that I can leverage it when I come upon later statements for frame locals to interpret them properly.See the last commit for a basic working example of an owned precondition (the parameter is an integer pointer type, but this works for structs too. I just need to get the
StructMembertype working incn_to_ail_exprto allow recursive dereferencing here)