#Drawing-language-Compiler 西电编译原理大作业 绘图语言解释器

最终产生式:

Program->Statement SEMICO Program|ε

Statement->OriginStatement|ScalseStatement|RotStatement|ForStatement|ColorStatement
OriginStatement->ORIGIN IS L_BRACKET Expression COMMA Expression R_BRACKET
ScaleStatement->SCALE IS L_BRACKET Expression COMMA Expression R_BRACKET
RotStatement->ROT IS Expression
ForStatement->FOR T FROM Expression TO Expression TO Expression STEP Expression DRAW L_BRACKET Expression COMMA Expression R_BRACKET
ColorStatement->COLOR IS BLUE|GREEN|RED|(Expression,Expression,Expression)
PixelSizeStatement->PIXELSIZE IS CONST_ID

Expression->Term{ (PLUS|MINUS) Term }
Term->Factor{ (MUL|DIV) Factor}
Factor->PLUS Factor|MINUS Factor|Component
Component->Atom POWER Component|Atom
Atom->CONST_ID | T | FUNC L_BRACKET Expression R_BRACKET | L_BRACKET Expression R_BRACKET

其他说明

scanner.cpp 词法分析实现
parser.cpp 语法分析实现
semantic.cpp 语义分析实现
test_scanner.cpp test_parser.cpp test_semantic.cpp均为测试所用的main()函数
为了实现完整功能，应该只使得test_semantic.cpp有效，其他两个注释掉。
添加了极其详细的注释和设置颜色的功能，详情请见代码