//! ConstantEmissionBox — Const 命令の発行を集約（仕様不変）
//!
//! ✅ Phase 25.1b Fix: All constant emission now uses function-local ID generator
//! when inside a function context to ensure proper SSA verification.

use crate::mir::builder::MirBuilder;
use crate::mir::{ConstValue, MirInstruction, ValueId};

#[inline]
pub fn emit_integer(b: &mut MirBuilder, val: i64) -> ValueId {
    let dst = b.next_value_id();
    let _ = b.emit_instruction(MirInstruction::Const {
        dst,
        value: ConstValue::Integer(val),
    });
    // Phase 84-1: Integer constant type annotation
    b.value_types.insert(dst, crate::mir::MirType::Integer);
    dst
}

#[inline]
pub fn emit_bool(b: &mut MirBuilder, val: bool) -> ValueId {
    let dst = b.next_value_id();
    let _ = b.emit_instruction(MirInstruction::Const {
        dst,
        value: ConstValue::Bool(val),
    });
    // Phase 84-1: Bool constant type annotation
    b.value_types.insert(dst, crate::mir::MirType::Bool);
    dst
}

#[inline]
pub fn emit_float(b: &mut MirBuilder, val: f64) -> ValueId {
    let dst = b.next_value_id();
    let _ = b.emit_instruction(MirInstruction::Const {
        dst,
        value: ConstValue::Float(val),
    });
    // Phase 84-1: Float constant type annotation
    b.value_types.insert(dst, crate::mir::MirType::Float);
    dst
}

#[inline]
pub fn emit_string<S: Into<String>>(b: &mut MirBuilder, s: S) -> ValueId {
    let dst = b.next_value_id();
    let _ = b.emit_instruction(MirInstruction::Const {
        dst,
        value: ConstValue::String(s.into()),
    });
    // 🎯 Phase 3-A: String constant type annotation
    // Ensures string constants have proper Box type for method resolution
    b.value_types
        .insert(dst, crate::mir::MirType::Box("StringBox".to_string()));
    b.value_origin_newbox.insert(dst, "StringBox".to_string());
    dst
}

#[inline]
pub fn emit_null(b: &mut MirBuilder) -> ValueId {
    let dst = b.next_value_id();
    let _ = b.emit_instruction(MirInstruction::Const {
        dst,
        value: ConstValue::Null,
    });
    // Phase 84-1: Null constant type annotation
    // Note: MirType has no Null variant, using Unknown as fallback
    b.value_types.insert(dst, crate::mir::MirType::Unknown);
    dst
}

#[inline]
pub fn emit_void(b: &mut MirBuilder) -> ValueId {
    let dst = b.next_value_id();
    let _ = b.emit_instruction(MirInstruction::Const {
        dst,
        value: ConstValue::Void,
    });
    // Phase 84-1: Void constant type annotation
    b.value_types.insert(dst, crate::mir::MirType::Void);
    dst
}