Brian Picciano
360857d506
The new gg format is based on a BNF file which can be found in the `gg` directory. The code for decoding `.gg` files has been refactored to mirror that file. The result is more resilient parsing, better errors, and a greater ability to extend the format in the future. The new decoder is notable in that it does not use a lexer. Both lexing and parsing are done in a single step. The format syntax itself has also been modified. Rather than using semi-colons everywhere, commas are used as separators in tuples. Additionally the final comma/semi-colon is no longer required.
30 lines
419 B
Go
30 lines
419 B
Go
package vm
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import (
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"bytes"
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"testing"
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"github.com/mediocregopher/ginger/gg"
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"github.com/stretchr/testify/assert"
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)
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func TestVM(t *testing.T) {
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src := `{
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incr = { out = add < (1, in); };
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out = incr < incr < in;
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}`
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var in int64 = 5
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val, err := EvaluateSource(
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bytes.NewBufferString(src),
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Value{Value: gg.Number(in)},
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GlobalScope,
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)
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assert.NoError(t, err)
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assert.Equal(t, in+2, *val.Number)
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}
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