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Experiment: add MAIN_FILE constant #7466

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Experiment: add MAIN_FILE constant #7466

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10 changes: 9 additions & 1 deletion src/compiler/crystal/program.cr
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Expand Up @@ -108,7 +108,7 @@ module Crystal
property? show_error_trace = false

# The main filename of this program
property filename : String?
getter filename : String?

# A `ProgressTracker` object which tracks compilation progress.
property progress_tracker = ProgressTracker.new
Expand Down Expand Up @@ -230,6 +230,14 @@ module Crystal
define_crystal_constants
end

def filename=(filename : String?)
@filename = filename

if filename
types["MAIN_FILE"] = Const.new self, self, "MAIN_FILE", StringLiteral.new(filename)
end
end

# Returns a `LiteralExpander` useful to expand literal like arrays and hashes
# into simpler forms.
getter(literal_expander) { LiteralExpander.new self }
Expand Down