编译器课程设计

项目文档

程序运行

mkdir build
cd build
cmake ..
make -j4

Lex运行

./bin/lex_rel input/require.l
gcc lex.yy.c -o out
./out input/main.c

lex主要是将require.l文件解析, 然后再生成lex.yy.c文件

Yacc运行

# 使用词法分析工具生成待解析文件
./out input/yacc_test.c > lex.out
./bin/yacc_rel ./input/require.y lex.out

Yacc输入

<(,->
<$NUM,23>
<+,->
<$NUM,16>
<),->
<*,->
<$NUM,3>
<-,->
<$NUM,12>
<+,->
<$NUM,4>

Yacc运行结果

 0 s1
( 0 1 0 s6
( a 0 1 6 0 23 A->a
( A 0 1 5 0 23 s14
( A + 0 1 5 14 0 23 0 s6
( A + a 0 1 5 14 6 0 23 0 16 A->a
( A + A 0 1 5 14 23 0 23 0 16 A->A+A
( A 0 1 5 0 39 s12
( A ) 0 1 5 12 0 39 0 A->(A)
A 0 2 39 s7
A * 0 2 7 39 0 s3
A * a 0 2 7 3 39 0 3 A->a
A * A 0 2 7 17 39 0 3 A->A*A
A 0 2 117 s9
A - 0 2 9 117 0 s3
A - a 0 2 9 3 117 0 12 A->a
A - A 0 2 9 19 117 0 12 s8
A - A + 0 2 9 19 8 117 0 12 0 s3
A - A + a 0 2 9 19 8 3 117 0 12 0 4 A->a
A - A + A 0 2 9 19 8 18 117 0 12 0 4 A->A+A
A - A 0 2 9 19 117 0 16 A->A-A
A 0 2 101 Accept