air-mir 0.4.0

Intermediate representation for the AirScript language
Documentation 
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use super::{compile, expect_diagnostic};

#[test]
fn trace_columns_index_access() {
    let source = "
    def test
    trace_columns {
        main: [a, b],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf a.first = 1;
    }
    integrity_constraints {
        enf $main[0]' - $main[1] = 0;
    }";

    assert!(compile(source).is_ok());
}

#[test]
fn trace_cols_groups() {
    let source = "
    def test
    const A = 123;
    const B = [1, 2, 3];
    const C = [[1, 2, 3], [4, 5, 6]];
    trace_columns {
        main: [clk, a[4]],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf a[1].first = A;
        enf clk.last = B[0] + C[0][1];
    }
    integrity_constraints {
        enf a[0]' = a[1] - 1;
    }";

    assert!(compile(source).is_ok());
}

#[test]
fn err_bc_column_undeclared() {
    let source = "
    def test
    trace_columns {
        main: [ctx],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf clk.first = 0;
        enf clk.last = 1;
    }
    integrity_constraints {
        enf clk' = clk + 1;
    }";

    expect_diagnostic(source, "this variable / bus is not defined");
}

#[test]
fn err_ic_column_undeclared() {
    let source = "
    def test
    trace_columns {
        main: [ctx],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf ctx.first = 0;
    }
    integrity_constraints {
        enf clk' = clk + 1;
    }";

    expect_diagnostic(source, "this variable / bus is not defined");
}

#[test]
fn err_bc_trace_cols_access_out_of_bounds() {
    // out of bounds in boundary constraints
    let source = "
    def test
    const A = 123;
    const B = [1, 2, 3];
    const C = [[1, 2, 3], [4, 5, 6]];
    trace_columns {
        main: [clk, a[4]],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf a[4].first = A;
    }
    integrity_constraints {
        enf a[0]' = a[0] - 1;
    }";

    expect_diagnostic(
        source,
        "attempted to access an index which is out of bounds",
    );
}

#[test]
fn err_ic_trace_cols_access_out_of_bounds() {
    // out of bounds in integrity constraints
    let source = "
    def test
    const A = 123;
    const B = [1, 2, 3];
    const C = [[1, 2, 3], [4, 5, 6]];
    trace_columns {
        main: [clk, a[4]],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf a[1].first = A;
        enf clk.last = B[0] + C[0][1];
    }
    integrity_constraints {
        enf a[4]' = a[4] - 1;
    }";

    expect_diagnostic(
        source,
        "attempted to access an index which is out of bounds",
    );
}

#[test]
fn err_ic_trace_cols_group_used_as_scalar() {
    let source = "
    def test
    trace_columns {
        main: [clk, a[4]],
    }
    public_inputs {
        stack_inputs: [16],
    }
    boundary_constraints {
        enf a[1].first = 0;
    }
    integrity_constraints {
        enf a[0]' = a + clk;
    }";

    expect_diagnostic(source, "type mismatch");
}