Symbol Tables and Declaration Processing - Crafting a Compiler - page 281

Block

import f(float, float, float)

import g(int)
{
int w,x
{
float x,z
f(x,w,z)

Dcls Code

Block Call

Dcl w Dcl x

}

g(x)

g

Dcls Code Args

}

Dcl x Dcl z

Call Ref x

(a)

f Args

Ref w

Ref x Ref z

Symbol Symbol Attributes

Number Name

(b)

1
2
3
4
5
6

f
g
w
x
x
z

void func(float,float,float)

void func(int)
int

Block

int

float
float

Dcls Code

Block Call

Dcl 3 Dcl 4

(c)

Code Ref 2

Dcls Args

Dcl 5 Dcl 6

Call Ref 4

Ref 1 Args

Ref 3 Ref 6

Ref 5

(d)

Figure 8.1: Symbol table processing for a block-structured program