main.lst

在linux下实行的简单的c语言编译器

line 003: Reserved word: void
line 003: ID:f
line 003: (
line 003: Reserved word: int
line 003: ID:n
line 003: )
line 004: {
line 005: Reserved word: int
line 005: ID:a
line 005: =
line 005: INTEGER:1
line 005: ;
line 006: Reserved word: int
line 006: ID:b
line 006: =
line 006: INTEGER:1
line 006: ;
line 007: Reserved word: int
line 007: ID:count
line 007: =
line 007: INTEGER:1
line 007: ;
line 008: Reserved word: int
line 008: ID:out
line 008: ;
line 010: Reserved word: if
line 010: (
line 010: ID:n
line 010: ==
line 010: INTEGER:0
line 010: ||
line 010: ID:n
line 010: ==
line 010: INTEGER:1
line 010: )
line 011: Reserved word: return
line 011: INTEGER:1
line 011: ;
line 013: Reserved word: while
line 013: (
line 013: ID:count
line 013: <
line 013: ID:n
line 013: )
line 014: {
line 015: ID:a
line 015: =
line 015: ID:a
line 015: +
line 015: ID:b
line 015: ;
line 016: ID:b
line 016: =
line 016: ID:a
line 016: +
line 016: ID:b
line 016: ;
line 017: ID:count
line 017: =
line 017: ID:count
line 017: +
line 017: INTEGER:1
line 017: ;
line 018: }
line 019: Reserved word: return
line 019: ID:b
line 019: ;
line 020: }
line 022: ID:main
line 022: (
line 022: )
line 023: {
line 024: Reserved word: int
line 024: ID:n
line 024: =
line 024: INTEGER:1
line 024: ;
line 025: Reserved word: while
line 025: (
line 025: ID:n
line 025: <=
line 025: INTEGER:10
line 025: )
line 026: {
line 027: ID:f
line 027: (
line 027: ID:n
line 027: )
line 027: ;
line 028: ID:n
line 028: =
line 028: ID:n
line 028: +
line 028: INTEGER:1
line 028: ;
line 029: }
line 030: }
line 031: Scan Finished!

Syntax Tree:
  Fun Def name: f	 Return_Type: Void
    Param Decl Param_Type: Int
    Comp Decl 
      ID Decl Var_Type: Int
        Assign
          Var: a
          Num_Const: 1
      ID Decl Var_Type: Int
        Assign
          Var: b
          Num_Const: 1
      ID Decl Var_Type: Int
        Assign
          Var: count
          Num_Const: 1
      ID Decl Var_Type: Int
        Var: out
      If
        op: ||
          op: ==
            Var: n
            Num_Const: 0
          op: ==
            Var: n
            Num_Const: 1
        Return
          Num_Const: 1
      While
        op: <
          Var: count
          Var: n
        Comp Decl 
          Assign
            Var: a
            op: +
              Var: a
              Var: b
          Assign
            Var: b
            op: +
              Var: a
              Var: b
          Assign
            Var: count
            op: +
              Var: count
              Num_Const: 1
      Return
        Var: b
  Fun Def name: main	 Return_Type: Void
    Comp Decl 
      ID Decl Var_Type: Int
        Assign
          Var: n
          Num_Const: 1
      While
        op: <=
          Var: n
          Num_Const: 10
        Comp Decl 
          Call to: f
            Var: n
          Assign
            Var: n
            op: +
              Var: n
              Num_Const: 1

Building Symbol Table...

Function table:

Function Name Type	
_____________ ____
main           Void
Parameter
___________
f              Void
Parameter
___________
n Int 14

Symbol table:

Level: 0
Variable Name Type&&Offset
_____________ ____________

level: 1
Variable name Type&&offset
_____________ ____________
a             Int-4
b             Int-8
count         Int-12
out           Int-16

level: 2
Variable name Type&&offset
_____________ ____________

level: 1
Variable name Type&&offset
_____________ ____________
n             Int-4

level: 2
Variable name Type&&offset
_____________ ____________

Checking Types..

Type Checking Finished