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feat: implement string interpolation with %(expr) syntax in compiler and core library

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Add lexer support for `TOKEN_INTERPOLATION` to split string literals at interpolation points, introduce `MAX_INTERPOLATION_NESTING` limit of 8, and compile interpolated strings by emitting calls to `String.interpolate_()`. Optimize list and map literal construction with new `addCore_` primitives to reduce stack churn. Update `String`, `List`, and `Map` `toString` methods in core library to use interpolation syntax, and migrate all benchmark and test files from explicit concatenation to interpolated strings.
This commit is contained in:
Bob Nystrom
2015-11-11 15:55:48 +00:00
parent a8961f817e
commit 920b3e2a32
41 changed files with 321 additions and 129 deletions
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test/core/map/to_string.wren
+6 -6
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@@ -19,10 +19,10 @@ System.print({1: Foo.new()}) // expect: {1: Foo.toString}
// will be.
var s = {1: 2, 3: 4, 5: 6}.toString
System.print(s == "{1: 2, 3: 4, 5: 6}" ||
s == "{1: 2, 5: 6, 3: 4}" ||
s == "{3: 4, 1: 2, 5: 6}" ||
s == "{3: 4, 5: 6, 1: 2}" ||
s == "{5: 6, 1: 2, 3: 4}" ||
s == "{5: 6, 3: 4, 1: 2}") // expect: true
s == "{1: 2, 5: 6, 3: 4}" ||
s == "{3: 4, 1: 2, 5: 6}" ||
s == "{3: 4, 5: 6, 1: 2}" ||
s == "{5: 6, 1: 2, 3: 4}" ||
s == "{5: 6, 3: 4, 1: 2}") // expect: true
// TODO: Handle maps that contain themselves.
// TODO: Handle maps that contain themselves.