121 lines
3.6 KiB
Rust
121 lines
3.6 KiB
Rust
#[test]
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fn vtable_string_substring_concat() {
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use crate::backend::vm::VM;
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use crate::mir::{
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BasicBlockId, ConstValue, EffectMask, FunctionSignature, MirFunction, MirInstruction,
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MirModule, MirType,
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};
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std::env::set_var("NYASH_ABI_VTABLE", "1");
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// substring: "hello".substring(1,4) == "ell"
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let sig = FunctionSignature {
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name: "main".into(),
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params: vec![],
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return_type: MirType::String,
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effects: EffectMask::PURE,
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};
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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 s = f.next_value_id();
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f.get_block_mut(bb)
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.unwrap()
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.add_instruction(MirInstruction::Const {
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dst: s,
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value: ConstValue::String("hello".into()),
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});
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let sb = f.next_value_id();
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f.get_block_mut(bb)
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.unwrap()
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.add_instruction(MirInstruction::NewBox {
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dst: sb,
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box_type: "StringBox".into(),
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args: vec![s],
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});
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let i1 = f.next_value_id();
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f.get_block_mut(bb)
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.unwrap()
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.add_instruction(MirInstruction::Const {
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dst: i1,
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value: ConstValue::Integer(1),
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});
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let i4 = f.next_value_id();
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f.get_block_mut(bb)
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.unwrap()
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.add_instruction(MirInstruction::Const {
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dst: i4,
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value: ConstValue::Integer(4),
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});
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let sub = f.next_value_id();
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f.get_block_mut(bb)
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.unwrap()
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.add_instruction(MirInstruction::BoxCall {
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dst: Some(sub),
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box_val: sb,
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method: "substring".into(),
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args: vec![i1, i4],
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method_id: None,
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effects: EffectMask::PURE,
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});
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f.get_block_mut(bb)
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.unwrap()
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.add_instruction(MirInstruction::Return { value: Some(sub) });
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let mut m = MirModule::new("str_sub".into());
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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, "ell");
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// concat: "ab".concat("cd") == "abcd"
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let sig2 = FunctionSignature {
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name: "main".into(),
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params: vec![],
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return_type: MirType::String,
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effects: EffectMask::PURE,
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};
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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 a = f2.next_value_id();
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f2.get_block_mut(bb2)
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.unwrap()
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.add_instruction(MirInstruction::Const {
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dst: a,
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value: ConstValue::String("ab".into()),
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});
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let ab = f2.next_value_id();
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f2.get_block_mut(bb2)
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.unwrap()
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.add_instruction(MirInstruction::NewBox {
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dst: ab,
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box_type: "StringBox".into(),
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args: vec![a],
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});
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let c = f2.next_value_id();
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f2.get_block_mut(bb2)
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.unwrap()
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.add_instruction(MirInstruction::Const {
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dst: c,
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value: ConstValue::String("cd".into()),
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});
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let joined = f2.next_value_id();
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f2.get_block_mut(bb2)
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.unwrap()
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.add_instruction(MirInstruction::BoxCall {
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dst: Some(joined),
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box_val: ab,
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method: "concat".into(),
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args: vec![c],
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method_id: None,
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effects: EffectMask::PURE,
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});
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f2.get_block_mut(bb2)
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.unwrap()
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.add_instruction(MirInstruction::Return {
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value: Some(joined),
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});
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let mut m2 = MirModule::new("str_concat".into());
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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, "abcd");
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}
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