46 lines
3.0 KiB
Rust
46 lines
3.0 KiB
Rust
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#[test]
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fn vtable_array_and_string_len_get_set() {
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use crate::backend::vm::VM;
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use crate::mir::{MirModule, MirFunction, FunctionSignature, MirInstruction, EffectMask, BasicBlockId, ConstValue, MirType};
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std::env::set_var("NYASH_ABI_VTABLE", "1");
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// Array: set(0, "x"); len(); get(0)
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let sig = FunctionSignature { name: "main".into(), params: vec![], return_type: MirType::String, effects: EffectMask::PURE };
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let mut f = MirFunction::new(sig, BasicBlockId::new(0));
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let bb = f.entry_block;
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let arr = f.next_value_id();
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::NewBox { dst: arr, box_type: "ArrayBox".into(), args: vec![] });
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let idx0 = f.next_value_id();
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Const { dst: idx0, value: ConstValue::Integer(0) });
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let sval = f.next_value_id();
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Const { dst: sval, value: ConstValue::String("x".into()) });
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::BoxCall { dst: None, box_val: arr, method: "set".into(), args: vec![idx0, sval], method_id: None, effects: EffectMask::PURE });
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let lenv = f.next_value_id();
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::BoxCall { dst: Some(lenv), box_val: arr, method: "len".into(), args: vec![], method_id: None, effects: EffectMask::PURE });
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// sanity: len should be 1 (not asserted here, just exercise path)
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let got = f.next_value_id();
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::BoxCall { dst: Some(got), box_val: arr, method: "get".into(), args: vec![idx0], method_id: None, effects: EffectMask::PURE });
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f.get_block_mut(bb).unwrap().add_instruction(MirInstruction::Return { value: Some(got) });
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let mut m = MirModule::new("tarr".into()); m.add_function(f);
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let mut vm = VM::new();
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let out = vm.execute_module(&m).expect("vm exec");
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assert_eq!(out.to_string_box().value, "x");
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// String: len()
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let sig2 = FunctionSignature { name: "main".into(), params: vec![], return_type: MirType::Integer, effects: EffectMask::PURE };
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let mut f2 = MirFunction::new(sig2, BasicBlockId::new(0));
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let bb2 = f2.entry_block;
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let s = f2.next_value_id();
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f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::Const { dst: s, value: ConstValue::String("abc".into()) });
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let sb = f2.next_value_id();
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f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::NewBox { dst: sb, box_type: "StringBox".into(), args: vec![s] });
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let ln = f2.next_value_id();
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f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::BoxCall { dst: Some(ln), box_val: sb, method: "len".into(), args: vec![], method_id: None, effects: EffectMask::PURE });
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f2.get_block_mut(bb2).unwrap().add_instruction(MirInstruction::Return { value: Some(ln) });
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let mut m2 = MirModule::new("tstr".into()); m2.add_function(f2);
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let mut vm2 = VM::new();
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let out2 = vm2.execute_module(&m2).expect("vm exec");
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assert_eq!(out2.to_string_box().value, "3");
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}
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