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ELSEIFを実装

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otya128
2016-09-02 16:12:23 +09:00
parent 57de8e07d3
commit 7cb0b26880
5 changed files with 140 additions and 6 deletions
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41
SMILEBASIC/compiler.d
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@@ -656,7 +656,46 @@ class Compiler
compileStatements(node.then, sc);
//もしelseもあるのならば、endifに飛ぶ
GotoAddr then;
if(node.hasElse)
/*
if 0 then
elseif 0 then
elseif 1 then
else
endif
push 0
gotofalse else
goto endif
else:
push 0
gototrue elif1else
push 1
gototrue elif2
goto else
elif1:
goto endif
elif2:
goto endif
else:
endif:
*/
if (node.hasElseif)
{
then = genCodeGoto();
else_.address = cast(int)code.length;
GotoFalse else2;
foreach(t; node.elseif)
{
compileExpression(t[1], sc);
else2 = genCodeGotoFalse();
compileStatements(t[0], sc);
genCode(then);
else2.address = cast(int)code.length;
}
if(node.hasElse)
compileStatements(node.else_, sc);
then.address = cast(int)code.length;
}
else if(node.hasElse)
{
then = genCodeGoto();
else_.address = cast(int)code.length;