Class ProcDeclNode

Object
  ASTNode
      DeclNode
          ProcDeclNode

public class ProcDeclNode
extends DeclNode

An AST node representing a function or procedure declaration: "FUNCTION name(parameters) RETURN type IS decls BEGIN stmts END;" or "PROCEDURE name(parameters) IS decls BEGIN stmts END;".

Nested Class Summary

(package private) static class	ProcDeclNode.Mode A parameter mode: IN, OUT, INOUT, or NONE (equivalent to IN).
static class	ProcDeclNode.Param A formal parameter.

Nested classes/interfaces inherited from class ASTNode

ASTNode.Opcode

Field Summary

int	frameSize The size, in bytes, of a stack frame for this procedure, including formal parameters, return address, control pointer, register save area, and local variables.
IdNode	id The name of the procedure.
Type.BaseType	returnType The return type of the procedure or function.

Fields inherited from class DeclNode

enclosingProc

Constructor Summary

ProcDeclNode(IdNode id, List<ProcDeclNode.Param> params, Type.BaseType returnType, BlockNode body)
Creates a new ProcDeclNode.

Method Summary

void	codeGen(StmtNode loop) Generates code for this node and all descendants.
void	resolveNames(SymbolTable symtab) Resolves all applied uses of identifiers in the tree rooted at this node.
void	resolveTypes(ProcDeclNode proc) Fills in types for all Symbols bound to IdNodes.
void	unparse(PrintWriter p, int level) Prints a source representation of the tree rooted at this node on output stream p.

Methods inherited from class ASTNode

indent, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

id

public final IdNode id

The name of the procedure.

returnType

public final Type.BaseType returnType

The return type of the procedure or function. Is VOID for procedures.

frameSize

public int frameSize

The size, in bytes, of a stack frame for this procedure, including formal parameters, return address, control pointer, register save area, and local variables.

Constructor Detail

ProcDeclNode

public ProcDeclNode(IdNode id,
                    List<ProcDeclNode.Param> params,
                    Type.BaseType returnType,
                    BlockNode body)

Creates a new ProcDeclNode.

Parameters:

id - the name of the procedure.

returnType - the return type of the procedure.

params - the list of parameters. May be a zero-length list, but must not be null.

body - the procedure body.

Method Detail

unparse

public void unparse(PrintWriter p,
                    int level)

Prints a source representation of the tree rooted at this node on output stream p.

Specified by:

unparse in class ASTNode

Parameters:

p - the place to display the output.

level - the number of levels of indentation to use if the output requires more than one line.

resolveNames

public void resolveNames(SymbolTable symtab)

Resolves all applied uses of identifiers in the tree rooted at this node.

Specified by:

resolveNames in class ASTNode

Parameters:

symtab - the symbol table to be used.

resolveTypes

public void resolveTypes(ProcDeclNode proc)

Fills in types for all Symbols bound to IdNodes. Prints error messages as necessary.

Specified by:

resolveTypes in class ASTNode

Parameters:

proc - the smallest enclosing procedure or function declaration.

codeGen

public void codeGen(StmtNode loop)

Generates code for this node and all descendants.

Overrides:

codeGen in class DeclNode

Parameters:

loop - the smallest enclosing ForStmtNode or WhileStmtNode, if any.