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David Majda 435bb8f2df Error handling: Structured expectations
Before this commit, the |expected| property of an exception object
thrown when a generated parser encountered an error contained
expectations as strings. These strings were in a human-readable format
suitable for displaying in the UI but not suitable for machine
processing. For example, expected string literals included quotes and a
string "any character" was used when any character was expected.

This commit makes expectations structured objects. This makes the
machine processing easier, while still allowing to generate a
human-readable representation if needed.

Implements part of #198.

Speed impact
------------
Before:     1180.41 kB/s
After:      1165.31 kB/s
Difference: -1.28%

Size impact
-----------
Before:     863523 b
After:      950817 b
Difference: 10.10%

(Measured by /tools/impact with Node.js v0.6.18 on x86_64 GNU/Linux.)
11 years ago
..
compiler Error handling: Structured expectations 11 years ago
compiler.js Plugin API: Split compiler passes into stages 11 years ago
grammar-error.js Git repo npmization: Make the repo a npm package 12 years ago
parser.js Error handling: Structured expectations 11 years ago
peg.js Plugin API: Split compiler passes into stages 11 years ago
utils.js Fix typo in comment 11 years ago