local utils = require "luacheck.utils"
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local check_state = {}
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local CheckState = utils.class()
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function CheckState:__init(source_bytes)
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self.source_bytes = source_bytes
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self.warnings = {}
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end
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-- Returns column of a character in a line given its offset.
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-- The column is never larger than the line length.
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-- This can be called if line length is not yet known.
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function CheckState:offset_to_column(line, offset)
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local line_length = self.line_lengths[line]
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local column = offset - self.line_offsets[line] + 1
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if not line_length then
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return column
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end
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return math.max(1, math.min(line_length, column))
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end
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function CheckState:warn_column_range(code, range, warning)
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warning = warning or {}
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warning.code = code
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warning.line = range.line
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warning.column = range.column
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warning.end_column = range.end_column
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table.insert(self.warnings, warning)
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return warning
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end
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function CheckState:warn(code, line, offset, end_offset, warning)
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warning = warning or {}
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warning.code = code
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warning.line = line
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warning.column = self:offset_to_column(line, offset)
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warning.end_column = self:offset_to_column(line, end_offset)
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table.insert(self.warnings, warning)
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return warning
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end
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function CheckState:warn_range(code, range, warning)
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return self:warn(code, range.line, range.offset, range.end_offset, warning)
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end
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function CheckState:warn_var(code, var, warning)
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warning = self:warn_range(code, var.node, warning)
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warning.name = var.name
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return warning
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end
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function CheckState:warn_value(code, value, warning)
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warning = self:warn_range(code, value.var_node, warning)
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warning.name = value.var.name
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return warning
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end
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function check_state.new(source_bytes)
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return CheckState(source_bytes)
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end
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return check_state
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