Chip-8-Wizardry/chalk
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base: Chip-8-Wizardry:5c362d8e13cdd9b59220e2781dd8029422ce25f6
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compare: Chip-8-Wizardry:3f931c4a659e636f8bc04531cc0a3f4e50a6920d
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4 changed files with 112 additions and 112 deletions
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7
src/chalk/codegen.cr
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@ -86,17 +86,16 @@ module Chalk
when TreeBlock when TreeBlock
table = Table.new(table) table = Table.new(table)
tree.children.each do |child| tree.children.each do |child|
free += generate! child, table, free, free + 1 free += generate! child, table, free, free
end end
when TreeVar when TreeVar
entry = table[tree.name]? entry = table[tree.name]?
if entry == nil if entry == nil
entry = VarEntry.new free entry = VarEntry.new free
free += 1
table[tree.name] = entry table[tree.name] = entry
end end
raise "Unknown variable" unless entry.is_a?(VarEntry) raise "Unknown variable" unless entry.is_a?(VarEntry)
generate! tree.expr, table, entry.register, free generate! tree.expr, table, entry.register, free + 1
return 1 return 1
when TreeAssign when TreeAssign
entry = table[tree.name]? entry = table[tree.name]?
@ -119,7 +118,7 @@ module Chalk
when TreeWhile when TreeWhile
before_cond = @instructions.size before_cond = @instructions.size
generate! tree.condition, table, free, free + 1 generate! tree.condition, table, free, free + 1
sne free, 0 sne target, 0
cond_jump = jr 0 cond_jump = jr 0
old_size = @instructions.size old_size = @instructions.size

1
src/chalk/inline.cr
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@ -32,6 +32,7 @@ module Chalk
def generate!(emitter, params, table, target, free) def generate!(emitter, params, table, target, free)
emitter.generate! params[0], table, free, free + 1 emitter.generate! params[0], table, free, free + 1
emitter.instructions << GetFontInstruction.new free emitter.instructions << GetFontInstruction.new free
end end
end end