DOT:graphviz test

graphtest.dot

digraph G {
edge [fontname="FangSong"];
node [shape=box, fontname="FangSong" size="20,20"];
{
Lexical_Analyzer [label="词法分析器"];
Syntax_Analyzer [label="语法分析器"  ];
Semantic_Analyzer [label="语义分析"   ];
Intermediate_Code_Generator [label="中间代码生成器" ];
Machine_Independent_Code_Optimizer [label="机器无关代码优化器"   ];
Code_Generator [label="代码生成器" ];
Machine_Dependent_Code_Optimizer [label="机器相关代码优化器"  ];
}
node[shape=plaintext, fontname="KaiTi" ]{
character_stream [label="字符流"];
target_machine_code [label="目标机器语言" ];
}character_stream ->Lexical_Analyzer;
Lexical_Analyzer ->Syntax_Analyzer [label="符号流"];
Syntax_Analyzer  ->Semantic_Analyzer  [label="语法树"];
Semantic_Analyzer  ->Intermediate_Code_Generator  [label="语法树"] ;
Intermediate_Code_Generator->Machine_Independent_Code_Optimizer  [label="中间表示形式"];
Machine_Independent_Code_Optimizer  ->Code_Generator  [label="中间表示形式"];
Code_Generator ->Machine_Dependent_Code_Optimizer [label="目标机器语言"];
Machine_Dependent_Code_Optimizer->target_machine_code ;
}