hazemKrimi/jack-compiler
1
0
Fork 0
mirror of https://github.com/hazemKrimi/jack-compiler.git synced 2026-05-01 17:48:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat: handle string literals and array access and assignment

Browse Source
This commit is contained in:
Hazem Krimi
2026-04-29 18:10:27 +01:00
parent dd1234d150
commit 725f6d63b6
1 changed files with 31 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
internal/compilation-engine/compilation-engine.go
+31 -1
View File
@@ -73,6 +73,16 @@ func compileTerm(output *strings.Builder, tokens []tokenizer.Token, index *int)
code.WritePush(output, code.CONSTANT, int(number))
}
if tokens[*index].Type == tokenizer.STR_CONST {
code.WritePush(output, code.CONSTANT, len(tokens[*index].Value))
code.WriteCall(output, "String.new", 1)
for _, char := range tokens[*index].Value {
code.WritePush(output, code.CONSTANT, int(char))
code.WriteCall(output, "String.appendChar", 2)
}
}
if tokens[*index].Value == "this" {
variable, found := table.GetVariable([]*map[string]table.Variable{&subroutineSymbolTable}, tokens[*index].Value)
@@ -141,6 +151,10 @@ func compileTerm(output *strings.Builder, tokens []tokenizer.Token, index *int)
return errors.New("Invalid term!")
}
code.WriteArithmeticLogical(output, code.ADD)
code.WritePop(output, code.POINTER, 1)
code.WritePush(output, code.THAT, 0)
(*index)++
} else if slices.Contains([]string{"(", "."}, tokens[*index].Value) {
if err := compileSubroutineCall(output, tokens, index, identifier); err != nil {
@@ -359,6 +373,8 @@ func compileSubroutineCall(output *strings.Builder, tokens []tokenizer.Token, in
}
func compileLetStatement(output *strings.Builder, tokens []tokenizer.Token, index *int) error {
var isArrayAccess bool
if tokens[*index].Type != tokenizer.KEYWORD || tokens[*index].Value != "let" {
return errors.New("Invalid let statement!")
}
@@ -378,6 +394,10 @@ func compileLetStatement(output *strings.Builder, tokens []tokenizer.Token, inde
(*index)++
if tokens[*index].Value == "[" {
isArrayAccess = true
code.WritePush(output, segmentFromVariableKind(variable.Kind), variable.Count)
(*index)++
if err := compileExpression(output, tokens, index); err != nil {
@@ -388,6 +408,8 @@ func compileLetStatement(output *strings.Builder, tokens []tokenizer.Token, inde
return errors.New("Invalid expression!")
}
code.WriteArithmeticLogical(output, code.ADD)
(*index)++
}
@@ -405,7 +427,15 @@ func compileLetStatement(output *strings.Builder, tokens []tokenizer.Token, inde
return errors.New("Missing semicolon!")
}
code.WritePop(output, segmentFromVariableKind(variable.Kind), variable.Count)
if isArrayAccess {
code.WritePop(output, code.TEMP, 0)
code.WritePop(output, code.POINTER, 1)
code.WritePush(output, code.TEMP, 0)
code.WritePop(output, code.THAT, 0)
} else {
code.WritePop(output, segmentFromVariableKind(variable.Kind), variable.Count)
}
(*index)++
return nil